| 1 | /* bfd back-end for HP PA-RISC SOM objects. |
| 2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 3 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | Contributed by the Center for Software Science at the |
| 7 | University of Utah. |
| 8 | |
| 9 | This file is part of BFD, the Binary File Descriptor library. |
| 10 | |
| 11 | This program is free software; you can redistribute it and/or modify |
| 12 | it under the terms of the GNU General Public License as published by |
| 13 | the Free Software Foundation; either version 3 of the License, or |
| 14 | (at your option) any later version. |
| 15 | |
| 16 | This program is distributed in the hope that it will be useful, |
| 17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | GNU General Public License for more details. |
| 20 | |
| 21 | You should have received a copy of the GNU General Public License |
| 22 | along with this program; if not, write to the Free Software |
| 23 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
| 24 | 02110-1301, USA. */ |
| 25 | |
| 26 | #include "sysdep.h" |
| 27 | #include "bfd.h" |
| 28 | |
| 29 | #if defined (HOST_HPPAHPUX) || defined (HOST_HPPABSD) || defined (HOST_HPPAOSF) || defined(HOST_HPPAMPEIX) |
| 30 | |
| 31 | #include "libbfd.h" |
| 32 | #include "som.h" |
| 33 | #include "safe-ctype.h" |
| 34 | |
| 35 | #include <sys/param.h> |
| 36 | #include <signal.h> |
| 37 | #include <machine/reg.h> |
| 38 | #include <sys/file.h> |
| 39 | |
| 40 | /* This is the code recommended in the autoconf documentation, almost |
| 41 | verbatim. */ |
| 42 | |
| 43 | #ifndef __GNUC__ |
| 44 | # if HAVE_ALLOCA_H |
| 45 | # include <alloca.h> |
| 46 | # else |
| 47 | # ifdef _AIX |
| 48 | /* Indented so that pre-ansi C compilers will ignore it, rather than |
| 49 | choke on it. Some versions of AIX require this to be the first |
| 50 | thing in the file. */ |
| 51 | #pragma alloca |
| 52 | # else |
| 53 | # ifndef alloca /* predefined by HP cc +Olibcalls */ |
| 54 | # if !defined (__STDC__) && !defined (__hpux) |
| 55 | extern char *alloca (); |
| 56 | # else |
| 57 | extern void *alloca (); |
| 58 | # endif /* __STDC__, __hpux */ |
| 59 | # endif /* alloca */ |
| 60 | # endif /* _AIX */ |
| 61 | # endif /* HAVE_ALLOCA_H */ |
| 62 | #else |
| 63 | extern void *alloca (size_t); |
| 64 | #endif /* __GNUC__ */ |
| 65 | |
| 66 | static bfd_reloc_status_type hppa_som_reloc |
| 67 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 68 | static bfd_boolean som_mkobject (bfd *); |
| 69 | static bfd_boolean som_is_space (asection *); |
| 70 | static bfd_boolean som_is_subspace (asection *); |
| 71 | static int compare_subspaces (const void *, const void *); |
| 72 | static unsigned long som_compute_checksum (bfd *); |
| 73 | static bfd_boolean som_build_and_write_symbol_table (bfd *); |
| 74 | static unsigned int som_slurp_symbol_table (bfd *); |
| 75 | |
| 76 | /* Magic not defined in standard HP-UX header files until 8.0. */ |
| 77 | |
| 78 | #ifndef CPU_PA_RISC1_0 |
| 79 | #define CPU_PA_RISC1_0 0x20B |
| 80 | #endif /* CPU_PA_RISC1_0 */ |
| 81 | |
| 82 | #ifndef CPU_PA_RISC1_1 |
| 83 | #define CPU_PA_RISC1_1 0x210 |
| 84 | #endif /* CPU_PA_RISC1_1 */ |
| 85 | |
| 86 | #ifndef CPU_PA_RISC2_0 |
| 87 | #define CPU_PA_RISC2_0 0x214 |
| 88 | #endif /* CPU_PA_RISC2_0 */ |
| 89 | |
| 90 | #ifndef _PA_RISC1_0_ID |
| 91 | #define _PA_RISC1_0_ID CPU_PA_RISC1_0 |
| 92 | #endif /* _PA_RISC1_0_ID */ |
| 93 | |
| 94 | #ifndef _PA_RISC1_1_ID |
| 95 | #define _PA_RISC1_1_ID CPU_PA_RISC1_1 |
| 96 | #endif /* _PA_RISC1_1_ID */ |
| 97 | |
| 98 | #ifndef _PA_RISC2_0_ID |
| 99 | #define _PA_RISC2_0_ID CPU_PA_RISC2_0 |
| 100 | #endif /* _PA_RISC2_0_ID */ |
| 101 | |
| 102 | #ifndef _PA_RISC_MAXID |
| 103 | #define _PA_RISC_MAXID 0x2FF |
| 104 | #endif /* _PA_RISC_MAXID */ |
| 105 | |
| 106 | #ifndef _PA_RISC_ID |
| 107 | #define _PA_RISC_ID(__m_num) \ |
| 108 | (((__m_num) == _PA_RISC1_0_ID) || \ |
| 109 | ((__m_num) >= _PA_RISC1_1_ID && (__m_num) <= _PA_RISC_MAXID)) |
| 110 | #endif /* _PA_RISC_ID */ |
| 111 | |
| 112 | /* HIUX in it's infinite stupidity changed the names for several "well |
| 113 | known" constants. Work around such braindamage. Try the HPUX version |
| 114 | first, then the HIUX version, and finally provide a default. */ |
| 115 | #ifdef HPUX_AUX_ID |
| 116 | #define EXEC_AUX_ID HPUX_AUX_ID |
| 117 | #endif |
| 118 | |
| 119 | #if !defined (EXEC_AUX_ID) && defined (HIUX_AUX_ID) |
| 120 | #define EXEC_AUX_ID HIUX_AUX_ID |
| 121 | #endif |
| 122 | |
| 123 | #ifndef EXEC_AUX_ID |
| 124 | #define EXEC_AUX_ID 0 |
| 125 | #endif |
| 126 | |
| 127 | /* Size (in chars) of the temporary buffers used during fixup and string |
| 128 | table writes. */ |
| 129 | |
| 130 | #define SOM_TMP_BUFSIZE 8192 |
| 131 | |
| 132 | /* Size of the hash table in archives. */ |
| 133 | #define SOM_LST_HASH_SIZE 31 |
| 134 | |
| 135 | /* Max number of SOMs to be found in an archive. */ |
| 136 | #define SOM_LST_MODULE_LIMIT 1024 |
| 137 | |
| 138 | /* Generic alignment macro. */ |
| 139 | #define SOM_ALIGN(val, alignment) \ |
| 140 | (((val) + (alignment) - 1) &~ ((unsigned long) (alignment) - 1)) |
| 141 | |
| 142 | /* SOM allows any one of the four previous relocations to be reused |
| 143 | with a "R_PREV_FIXUP" relocation entry. Since R_PREV_FIXUP |
| 144 | relocations are always a single byte, using a R_PREV_FIXUP instead |
| 145 | of some multi-byte relocation makes object files smaller. |
| 146 | |
| 147 | Note one side effect of using a R_PREV_FIXUP is the relocation that |
| 148 | is being repeated moves to the front of the queue. */ |
| 149 | struct reloc_queue |
| 150 | { |
| 151 | unsigned char *reloc; |
| 152 | unsigned int size; |
| 153 | } reloc_queue[4]; |
| 154 | |
| 155 | /* This fully describes the symbol types which may be attached to |
| 156 | an EXPORT or IMPORT directive. Only SOM uses this formation |
| 157 | (ELF has no need for it). */ |
| 158 | typedef enum |
| 159 | { |
| 160 | SYMBOL_TYPE_UNKNOWN, |
| 161 | SYMBOL_TYPE_ABSOLUTE, |
| 162 | SYMBOL_TYPE_CODE, |
| 163 | SYMBOL_TYPE_DATA, |
| 164 | SYMBOL_TYPE_ENTRY, |
| 165 | SYMBOL_TYPE_MILLICODE, |
| 166 | SYMBOL_TYPE_PLABEL, |
| 167 | SYMBOL_TYPE_PRI_PROG, |
| 168 | SYMBOL_TYPE_SEC_PROG, |
| 169 | } pa_symbol_type; |
| 170 | |
| 171 | struct section_to_type |
| 172 | { |
| 173 | char *section; |
| 174 | char type; |
| 175 | }; |
| 176 | |
| 177 | /* Assorted symbol information that needs to be derived from the BFD symbol |
| 178 | and/or the BFD backend private symbol data. */ |
| 179 | struct som_misc_symbol_info |
| 180 | { |
| 181 | unsigned int symbol_type; |
| 182 | unsigned int symbol_scope; |
| 183 | unsigned int arg_reloc; |
| 184 | unsigned int symbol_info; |
| 185 | unsigned int symbol_value; |
| 186 | unsigned int priv_level; |
| 187 | unsigned int secondary_def; |
| 188 | unsigned int is_comdat; |
| 189 | unsigned int is_common; |
| 190 | unsigned int dup_common; |
| 191 | }; |
| 192 | |
| 193 | /* Map SOM section names to POSIX/BSD single-character symbol types. |
| 194 | |
| 195 | This table includes all the standard subspaces as defined in the |
| 196 | current "PRO ABI for PA-RISC Systems", $UNWIND$ which for |
| 197 | some reason was left out, and sections specific to embedded stabs. */ |
| 198 | |
| 199 | static const struct section_to_type stt[] = |
| 200 | { |
| 201 | {"$TEXT$", 't'}, |
| 202 | {"$SHLIB_INFO$", 't'}, |
| 203 | {"$MILLICODE$", 't'}, |
| 204 | {"$LIT$", 't'}, |
| 205 | {"$CODE$", 't'}, |
| 206 | {"$UNWIND_START$", 't'}, |
| 207 | {"$UNWIND$", 't'}, |
| 208 | {"$PRIVATE$", 'd'}, |
| 209 | {"$PLT$", 'd'}, |
| 210 | {"$SHLIB_DATA$", 'd'}, |
| 211 | {"$DATA$", 'd'}, |
| 212 | {"$SHORTDATA$", 'g'}, |
| 213 | {"$DLT$", 'd'}, |
| 214 | {"$GLOBAL$", 'g'}, |
| 215 | {"$SHORTBSS$", 's'}, |
| 216 | {"$BSS$", 'b'}, |
| 217 | {"$GDB_STRINGS$", 'N'}, |
| 218 | {"$GDB_SYMBOLS$", 'N'}, |
| 219 | {0, 0} |
| 220 | }; |
| 221 | |
| 222 | /* About the relocation formatting table... |
| 223 | |
| 224 | There are 256 entries in the table, one for each possible |
| 225 | relocation opcode available in SOM. We index the table by |
| 226 | the relocation opcode. The names and operations are those |
| 227 | defined by a.out_800 (4). |
| 228 | |
| 229 | Right now this table is only used to count and perform minimal |
| 230 | processing on relocation streams so that they can be internalized |
| 231 | into BFD and symbolically printed by utilities. To make actual use |
| 232 | of them would be much more difficult, BFD's concept of relocations |
| 233 | is far too simple to handle SOM relocations. The basic assumption |
| 234 | that a relocation can be completely processed independent of other |
| 235 | relocations before an object file is written is invalid for SOM. |
| 236 | |
| 237 | The SOM relocations are meant to be processed as a stream, they |
| 238 | specify copying of data from the input section to the output section |
| 239 | while possibly modifying the data in some manner. They also can |
| 240 | specify that a variable number of zeros or uninitialized data be |
| 241 | inserted on in the output segment at the current offset. Some |
| 242 | relocations specify that some previous relocation be re-applied at |
| 243 | the current location in the input/output sections. And finally a number |
| 244 | of relocations have effects on other sections (R_ENTRY, R_EXIT, |
| 245 | R_UNWIND_AUX and a variety of others). There isn't even enough room |
| 246 | in the BFD relocation data structure to store enough information to |
| 247 | perform all the relocations. |
| 248 | |
| 249 | Each entry in the table has three fields. |
| 250 | |
| 251 | The first entry is an index into this "class" of relocations. This |
| 252 | index can then be used as a variable within the relocation itself. |
| 253 | |
| 254 | The second field is a format string which actually controls processing |
| 255 | of the relocation. It uses a simple postfix machine to do calculations |
| 256 | based on variables/constants found in the string and the relocation |
| 257 | stream. |
| 258 | |
| 259 | The third field specifys whether or not this relocation may use |
| 260 | a constant (V) from the previous R_DATA_OVERRIDE rather than a constant |
| 261 | stored in the instruction. |
| 262 | |
| 263 | Variables: |
| 264 | |
| 265 | L = input space byte count |
| 266 | D = index into class of relocations |
| 267 | M = output space byte count |
| 268 | N = statement number (unused?) |
| 269 | O = stack operation |
| 270 | R = parameter relocation bits |
| 271 | S = symbol index |
| 272 | T = first 32 bits of stack unwind information |
| 273 | U = second 32 bits of stack unwind information |
| 274 | V = a literal constant (usually used in the next relocation) |
| 275 | P = a previous relocation |
| 276 | |
| 277 | Lower case letters (starting with 'b') refer to following |
| 278 | bytes in the relocation stream. 'b' is the next 1 byte, |
| 279 | c is the next 2 bytes, d is the next 3 bytes, etc... |
| 280 | This is the variable part of the relocation entries that |
| 281 | makes our life a living hell. |
| 282 | |
| 283 | numerical constants are also used in the format string. Note |
| 284 | the constants are represented in decimal. |
| 285 | |
| 286 | '+', "*" and "=" represents the obvious postfix operators. |
| 287 | '<' represents a left shift. |
| 288 | |
| 289 | Stack Operations: |
| 290 | |
| 291 | Parameter Relocation Bits: |
| 292 | |
| 293 | Unwind Entries: |
| 294 | |
| 295 | Previous Relocations: The index field represents which in the queue |
| 296 | of 4 previous fixups should be re-applied. |
| 297 | |
| 298 | Literal Constants: These are generally used to represent addend |
| 299 | parts of relocations when these constants are not stored in the |
| 300 | fields of the instructions themselves. For example the instruction |
| 301 | addil foo-$global$-0x1234 would use an override for "0x1234" rather |
| 302 | than storing it into the addil itself. */ |
| 303 | |
| 304 | struct fixup_format |
| 305 | { |
| 306 | int D; |
| 307 | const char *format; |
| 308 | }; |
| 309 | |
| 310 | static const struct fixup_format som_fixup_formats[256] = |
| 311 | { |
| 312 | /* R_NO_RELOCATION. */ |
| 313 | { 0, "LD1+4*=" }, /* 0x00 */ |
| 314 | { 1, "LD1+4*=" }, /* 0x01 */ |
| 315 | { 2, "LD1+4*=" }, /* 0x02 */ |
| 316 | { 3, "LD1+4*=" }, /* 0x03 */ |
| 317 | { 4, "LD1+4*=" }, /* 0x04 */ |
| 318 | { 5, "LD1+4*=" }, /* 0x05 */ |
| 319 | { 6, "LD1+4*=" }, /* 0x06 */ |
| 320 | { 7, "LD1+4*=" }, /* 0x07 */ |
| 321 | { 8, "LD1+4*=" }, /* 0x08 */ |
| 322 | { 9, "LD1+4*=" }, /* 0x09 */ |
| 323 | { 10, "LD1+4*=" }, /* 0x0a */ |
| 324 | { 11, "LD1+4*=" }, /* 0x0b */ |
| 325 | { 12, "LD1+4*=" }, /* 0x0c */ |
| 326 | { 13, "LD1+4*=" }, /* 0x0d */ |
| 327 | { 14, "LD1+4*=" }, /* 0x0e */ |
| 328 | { 15, "LD1+4*=" }, /* 0x0f */ |
| 329 | { 16, "LD1+4*=" }, /* 0x10 */ |
| 330 | { 17, "LD1+4*=" }, /* 0x11 */ |
| 331 | { 18, "LD1+4*=" }, /* 0x12 */ |
| 332 | { 19, "LD1+4*=" }, /* 0x13 */ |
| 333 | { 20, "LD1+4*=" }, /* 0x14 */ |
| 334 | { 21, "LD1+4*=" }, /* 0x15 */ |
| 335 | { 22, "LD1+4*=" }, /* 0x16 */ |
| 336 | { 23, "LD1+4*=" }, /* 0x17 */ |
| 337 | { 0, "LD8<b+1+4*=" }, /* 0x18 */ |
| 338 | { 1, "LD8<b+1+4*=" }, /* 0x19 */ |
| 339 | { 2, "LD8<b+1+4*=" }, /* 0x1a */ |
| 340 | { 3, "LD8<b+1+4*=" }, /* 0x1b */ |
| 341 | { 0, "LD16<c+1+4*=" }, /* 0x1c */ |
| 342 | { 1, "LD16<c+1+4*=" }, /* 0x1d */ |
| 343 | { 2, "LD16<c+1+4*=" }, /* 0x1e */ |
| 344 | { 0, "Ld1+=" }, /* 0x1f */ |
| 345 | /* R_ZEROES. */ |
| 346 | { 0, "Lb1+4*=" }, /* 0x20 */ |
| 347 | { 1, "Ld1+=" }, /* 0x21 */ |
| 348 | /* R_UNINIT. */ |
| 349 | { 0, "Lb1+4*=" }, /* 0x22 */ |
| 350 | { 1, "Ld1+=" }, /* 0x23 */ |
| 351 | /* R_RELOCATION. */ |
| 352 | { 0, "L4=" }, /* 0x24 */ |
| 353 | /* R_DATA_ONE_SYMBOL. */ |
| 354 | { 0, "L4=Sb=" }, /* 0x25 */ |
| 355 | { 1, "L4=Sd=" }, /* 0x26 */ |
| 356 | /* R_DATA_PLABEL. */ |
| 357 | { 0, "L4=Sb=" }, /* 0x27 */ |
| 358 | { 1, "L4=Sd=" }, /* 0x28 */ |
| 359 | /* R_SPACE_REF. */ |
| 360 | { 0, "L4=" }, /* 0x29 */ |
| 361 | /* R_REPEATED_INIT. */ |
| 362 | { 0, "L4=Mb1+4*=" }, /* 0x2a */ |
| 363 | { 1, "Lb4*=Mb1+L*=" }, /* 0x2b */ |
| 364 | { 2, "Lb4*=Md1+4*=" }, /* 0x2c */ |
| 365 | { 3, "Ld1+=Me1+=" }, /* 0x2d */ |
| 366 | { 0, "" }, /* 0x2e */ |
| 367 | { 0, "" }, /* 0x2f */ |
| 368 | /* R_PCREL_CALL. */ |
| 369 | { 0, "L4=RD=Sb=" }, /* 0x30 */ |
| 370 | { 1, "L4=RD=Sb=" }, /* 0x31 */ |
| 371 | { 2, "L4=RD=Sb=" }, /* 0x32 */ |
| 372 | { 3, "L4=RD=Sb=" }, /* 0x33 */ |
| 373 | { 4, "L4=RD=Sb=" }, /* 0x34 */ |
| 374 | { 5, "L4=RD=Sb=" }, /* 0x35 */ |
| 375 | { 6, "L4=RD=Sb=" }, /* 0x36 */ |
| 376 | { 7, "L4=RD=Sb=" }, /* 0x37 */ |
| 377 | { 8, "L4=RD=Sb=" }, /* 0x38 */ |
| 378 | { 9, "L4=RD=Sb=" }, /* 0x39 */ |
| 379 | { 0, "L4=RD8<b+=Sb=" }, /* 0x3a */ |
| 380 | { 1, "L4=RD8<b+=Sb=" }, /* 0x3b */ |
| 381 | { 0, "L4=RD8<b+=Sd=" }, /* 0x3c */ |
| 382 | { 1, "L4=RD8<b+=Sd=" }, /* 0x3d */ |
| 383 | /* R_SHORT_PCREL_MODE. */ |
| 384 | { 0, "" }, /* 0x3e */ |
| 385 | /* R_LONG_PCREL_MODE. */ |
| 386 | { 0, "" }, /* 0x3f */ |
| 387 | /* R_ABS_CALL. */ |
| 388 | { 0, "L4=RD=Sb=" }, /* 0x40 */ |
| 389 | { 1, "L4=RD=Sb=" }, /* 0x41 */ |
| 390 | { 2, "L4=RD=Sb=" }, /* 0x42 */ |
| 391 | { 3, "L4=RD=Sb=" }, /* 0x43 */ |
| 392 | { 4, "L4=RD=Sb=" }, /* 0x44 */ |
| 393 | { 5, "L4=RD=Sb=" }, /* 0x45 */ |
| 394 | { 6, "L4=RD=Sb=" }, /* 0x46 */ |
| 395 | { 7, "L4=RD=Sb=" }, /* 0x47 */ |
| 396 | { 8, "L4=RD=Sb=" }, /* 0x48 */ |
| 397 | { 9, "L4=RD=Sb=" }, /* 0x49 */ |
| 398 | { 0, "L4=RD8<b+=Sb=" }, /* 0x4a */ |
| 399 | { 1, "L4=RD8<b+=Sb=" }, /* 0x4b */ |
| 400 | { 0, "L4=RD8<b+=Sd=" }, /* 0x4c */ |
| 401 | { 1, "L4=RD8<b+=Sd=" }, /* 0x4d */ |
| 402 | /* R_RESERVED. */ |
| 403 | { 0, "" }, /* 0x4e */ |
| 404 | { 0, "" }, /* 0x4f */ |
| 405 | /* R_DP_RELATIVE. */ |
| 406 | { 0, "L4=SD=" }, /* 0x50 */ |
| 407 | { 1, "L4=SD=" }, /* 0x51 */ |
| 408 | { 2, "L4=SD=" }, /* 0x52 */ |
| 409 | { 3, "L4=SD=" }, /* 0x53 */ |
| 410 | { 4, "L4=SD=" }, /* 0x54 */ |
| 411 | { 5, "L4=SD=" }, /* 0x55 */ |
| 412 | { 6, "L4=SD=" }, /* 0x56 */ |
| 413 | { 7, "L4=SD=" }, /* 0x57 */ |
| 414 | { 8, "L4=SD=" }, /* 0x58 */ |
| 415 | { 9, "L4=SD=" }, /* 0x59 */ |
| 416 | { 10, "L4=SD=" }, /* 0x5a */ |
| 417 | { 11, "L4=SD=" }, /* 0x5b */ |
| 418 | { 12, "L4=SD=" }, /* 0x5c */ |
| 419 | { 13, "L4=SD=" }, /* 0x5d */ |
| 420 | { 14, "L4=SD=" }, /* 0x5e */ |
| 421 | { 15, "L4=SD=" }, /* 0x5f */ |
| 422 | { 16, "L4=SD=" }, /* 0x60 */ |
| 423 | { 17, "L4=SD=" }, /* 0x61 */ |
| 424 | { 18, "L4=SD=" }, /* 0x62 */ |
| 425 | { 19, "L4=SD=" }, /* 0x63 */ |
| 426 | { 20, "L4=SD=" }, /* 0x64 */ |
| 427 | { 21, "L4=SD=" }, /* 0x65 */ |
| 428 | { 22, "L4=SD=" }, /* 0x66 */ |
| 429 | { 23, "L4=SD=" }, /* 0x67 */ |
| 430 | { 24, "L4=SD=" }, /* 0x68 */ |
| 431 | { 25, "L4=SD=" }, /* 0x69 */ |
| 432 | { 26, "L4=SD=" }, /* 0x6a */ |
| 433 | { 27, "L4=SD=" }, /* 0x6b */ |
| 434 | { 28, "L4=SD=" }, /* 0x6c */ |
| 435 | { 29, "L4=SD=" }, /* 0x6d */ |
| 436 | { 30, "L4=SD=" }, /* 0x6e */ |
| 437 | { 31, "L4=SD=" }, /* 0x6f */ |
| 438 | { 32, "L4=Sb=" }, /* 0x70 */ |
| 439 | { 33, "L4=Sd=" }, /* 0x71 */ |
| 440 | /* R_DATA_GPREL. */ |
| 441 | { 0, "L4=Sd=" }, /* 0x72 */ |
| 442 | /* R_RESERVED. */ |
| 443 | { 0, "" }, /* 0x73 */ |
| 444 | { 0, "" }, /* 0x74 */ |
| 445 | { 0, "" }, /* 0x75 */ |
| 446 | { 0, "" }, /* 0x76 */ |
| 447 | { 0, "" }, /* 0x77 */ |
| 448 | /* R_DLT_REL. */ |
| 449 | { 0, "L4=Sb=" }, /* 0x78 */ |
| 450 | { 1, "L4=Sd=" }, /* 0x79 */ |
| 451 | /* R_RESERVED. */ |
| 452 | { 0, "" }, /* 0x7a */ |
| 453 | { 0, "" }, /* 0x7b */ |
| 454 | { 0, "" }, /* 0x7c */ |
| 455 | { 0, "" }, /* 0x7d */ |
| 456 | { 0, "" }, /* 0x7e */ |
| 457 | { 0, "" }, /* 0x7f */ |
| 458 | /* R_CODE_ONE_SYMBOL. */ |
| 459 | { 0, "L4=SD=" }, /* 0x80 */ |
| 460 | { 1, "L4=SD=" }, /* 0x81 */ |
| 461 | { 2, "L4=SD=" }, /* 0x82 */ |
| 462 | { 3, "L4=SD=" }, /* 0x83 */ |
| 463 | { 4, "L4=SD=" }, /* 0x84 */ |
| 464 | { 5, "L4=SD=" }, /* 0x85 */ |
| 465 | { 6, "L4=SD=" }, /* 0x86 */ |
| 466 | { 7, "L4=SD=" }, /* 0x87 */ |
| 467 | { 8, "L4=SD=" }, /* 0x88 */ |
| 468 | { 9, "L4=SD=" }, /* 0x89 */ |
| 469 | { 10, "L4=SD=" }, /* 0x8q */ |
| 470 | { 11, "L4=SD=" }, /* 0x8b */ |
| 471 | { 12, "L4=SD=" }, /* 0x8c */ |
| 472 | { 13, "L4=SD=" }, /* 0x8d */ |
| 473 | { 14, "L4=SD=" }, /* 0x8e */ |
| 474 | { 15, "L4=SD=" }, /* 0x8f */ |
| 475 | { 16, "L4=SD=" }, /* 0x90 */ |
| 476 | { 17, "L4=SD=" }, /* 0x91 */ |
| 477 | { 18, "L4=SD=" }, /* 0x92 */ |
| 478 | { 19, "L4=SD=" }, /* 0x93 */ |
| 479 | { 20, "L4=SD=" }, /* 0x94 */ |
| 480 | { 21, "L4=SD=" }, /* 0x95 */ |
| 481 | { 22, "L4=SD=" }, /* 0x96 */ |
| 482 | { 23, "L4=SD=" }, /* 0x97 */ |
| 483 | { 24, "L4=SD=" }, /* 0x98 */ |
| 484 | { 25, "L4=SD=" }, /* 0x99 */ |
| 485 | { 26, "L4=SD=" }, /* 0x9a */ |
| 486 | { 27, "L4=SD=" }, /* 0x9b */ |
| 487 | { 28, "L4=SD=" }, /* 0x9c */ |
| 488 | { 29, "L4=SD=" }, /* 0x9d */ |
| 489 | { 30, "L4=SD=" }, /* 0x9e */ |
| 490 | { 31, "L4=SD=" }, /* 0x9f */ |
| 491 | { 32, "L4=Sb=" }, /* 0xa0 */ |
| 492 | { 33, "L4=Sd=" }, /* 0xa1 */ |
| 493 | /* R_RESERVED. */ |
| 494 | { 0, "" }, /* 0xa2 */ |
| 495 | { 0, "" }, /* 0xa3 */ |
| 496 | { 0, "" }, /* 0xa4 */ |
| 497 | { 0, "" }, /* 0xa5 */ |
| 498 | { 0, "" }, /* 0xa6 */ |
| 499 | { 0, "" }, /* 0xa7 */ |
| 500 | { 0, "" }, /* 0xa8 */ |
| 501 | { 0, "" }, /* 0xa9 */ |
| 502 | { 0, "" }, /* 0xaa */ |
| 503 | { 0, "" }, /* 0xab */ |
| 504 | { 0, "" }, /* 0xac */ |
| 505 | { 0, "" }, /* 0xad */ |
| 506 | /* R_MILLI_REL. */ |
| 507 | { 0, "L4=Sb=" }, /* 0xae */ |
| 508 | { 1, "L4=Sd=" }, /* 0xaf */ |
| 509 | /* R_CODE_PLABEL. */ |
| 510 | { 0, "L4=Sb=" }, /* 0xb0 */ |
| 511 | { 1, "L4=Sd=" }, /* 0xb1 */ |
| 512 | /* R_BREAKPOINT. */ |
| 513 | { 0, "L4=" }, /* 0xb2 */ |
| 514 | /* R_ENTRY. */ |
| 515 | { 0, "Te=Ue=" }, /* 0xb3 */ |
| 516 | { 1, "Uf=" }, /* 0xb4 */ |
| 517 | /* R_ALT_ENTRY. */ |
| 518 | { 0, "" }, /* 0xb5 */ |
| 519 | /* R_EXIT. */ |
| 520 | { 0, "" }, /* 0xb6 */ |
| 521 | /* R_BEGIN_TRY. */ |
| 522 | { 0, "" }, /* 0xb7 */ |
| 523 | /* R_END_TRY. */ |
| 524 | { 0, "R0=" }, /* 0xb8 */ |
| 525 | { 1, "Rb4*=" }, /* 0xb9 */ |
| 526 | { 2, "Rd4*=" }, /* 0xba */ |
| 527 | /* R_BEGIN_BRTAB. */ |
| 528 | { 0, "" }, /* 0xbb */ |
| 529 | /* R_END_BRTAB. */ |
| 530 | { 0, "" }, /* 0xbc */ |
| 531 | /* R_STATEMENT. */ |
| 532 | { 0, "Nb=" }, /* 0xbd */ |
| 533 | { 1, "Nc=" }, /* 0xbe */ |
| 534 | { 2, "Nd=" }, /* 0xbf */ |
| 535 | /* R_DATA_EXPR. */ |
| 536 | { 0, "L4=" }, /* 0xc0 */ |
| 537 | /* R_CODE_EXPR. */ |
| 538 | { 0, "L4=" }, /* 0xc1 */ |
| 539 | /* R_FSEL. */ |
| 540 | { 0, "" }, /* 0xc2 */ |
| 541 | /* R_LSEL. */ |
| 542 | { 0, "" }, /* 0xc3 */ |
| 543 | /* R_RSEL. */ |
| 544 | { 0, "" }, /* 0xc4 */ |
| 545 | /* R_N_MODE. */ |
| 546 | { 0, "" }, /* 0xc5 */ |
| 547 | /* R_S_MODE. */ |
| 548 | { 0, "" }, /* 0xc6 */ |
| 549 | /* R_D_MODE. */ |
| 550 | { 0, "" }, /* 0xc7 */ |
| 551 | /* R_R_MODE. */ |
| 552 | { 0, "" }, /* 0xc8 */ |
| 553 | /* R_DATA_OVERRIDE. */ |
| 554 | { 0, "V0=" }, /* 0xc9 */ |
| 555 | { 1, "Vb=" }, /* 0xca */ |
| 556 | { 2, "Vc=" }, /* 0xcb */ |
| 557 | { 3, "Vd=" }, /* 0xcc */ |
| 558 | { 4, "Ve=" }, /* 0xcd */ |
| 559 | /* R_TRANSLATED. */ |
| 560 | { 0, "" }, /* 0xce */ |
| 561 | /* R_AUX_UNWIND. */ |
| 562 | { 0,"Sd=Ve=Ee=" }, /* 0xcf */ |
| 563 | /* R_COMP1. */ |
| 564 | { 0, "Ob=" }, /* 0xd0 */ |
| 565 | /* R_COMP2. */ |
| 566 | { 0, "Ob=Sd=" }, /* 0xd1 */ |
| 567 | /* R_COMP3. */ |
| 568 | { 0, "Ob=Ve=" }, /* 0xd2 */ |
| 569 | /* R_PREV_FIXUP. */ |
| 570 | { 0, "P" }, /* 0xd3 */ |
| 571 | { 1, "P" }, /* 0xd4 */ |
| 572 | { 2, "P" }, /* 0xd5 */ |
| 573 | { 3, "P" }, /* 0xd6 */ |
| 574 | /* R_SEC_STMT. */ |
| 575 | { 0, "" }, /* 0xd7 */ |
| 576 | /* R_N0SEL. */ |
| 577 | { 0, "" }, /* 0xd8 */ |
| 578 | /* R_N1SEL. */ |
| 579 | { 0, "" }, /* 0xd9 */ |
| 580 | /* R_LINETAB. */ |
| 581 | { 0, "Eb=Sd=Ve=" }, /* 0xda */ |
| 582 | /* R_LINETAB_ESC. */ |
| 583 | { 0, "Eb=Mb=" }, /* 0xdb */ |
| 584 | /* R_LTP_OVERRIDE. */ |
| 585 | { 0, "" }, /* 0xdc */ |
| 586 | /* R_COMMENT. */ |
| 587 | { 0, "Ob=Vf=" }, /* 0xdd */ |
| 588 | /* R_RESERVED. */ |
| 589 | { 0, "" }, /* 0xde */ |
| 590 | { 0, "" }, /* 0xdf */ |
| 591 | { 0, "" }, /* 0xe0 */ |
| 592 | { 0, "" }, /* 0xe1 */ |
| 593 | { 0, "" }, /* 0xe2 */ |
| 594 | { 0, "" }, /* 0xe3 */ |
| 595 | { 0, "" }, /* 0xe4 */ |
| 596 | { 0, "" }, /* 0xe5 */ |
| 597 | { 0, "" }, /* 0xe6 */ |
| 598 | { 0, "" }, /* 0xe7 */ |
| 599 | { 0, "" }, /* 0xe8 */ |
| 600 | { 0, "" }, /* 0xe9 */ |
| 601 | { 0, "" }, /* 0xea */ |
| 602 | { 0, "" }, /* 0xeb */ |
| 603 | { 0, "" }, /* 0xec */ |
| 604 | { 0, "" }, /* 0xed */ |
| 605 | { 0, "" }, /* 0xee */ |
| 606 | { 0, "" }, /* 0xef */ |
| 607 | { 0, "" }, /* 0xf0 */ |
| 608 | { 0, "" }, /* 0xf1 */ |
| 609 | { 0, "" }, /* 0xf2 */ |
| 610 | { 0, "" }, /* 0xf3 */ |
| 611 | { 0, "" }, /* 0xf4 */ |
| 612 | { 0, "" }, /* 0xf5 */ |
| 613 | { 0, "" }, /* 0xf6 */ |
| 614 | { 0, "" }, /* 0xf7 */ |
| 615 | { 0, "" }, /* 0xf8 */ |
| 616 | { 0, "" }, /* 0xf9 */ |
| 617 | { 0, "" }, /* 0xfa */ |
| 618 | { 0, "" }, /* 0xfb */ |
| 619 | { 0, "" }, /* 0xfc */ |
| 620 | { 0, "" }, /* 0xfd */ |
| 621 | { 0, "" }, /* 0xfe */ |
| 622 | { 0, "" }, /* 0xff */ |
| 623 | }; |
| 624 | |
| 625 | static const int comp1_opcodes[] = |
| 626 | { |
| 627 | 0x00, |
| 628 | 0x40, |
| 629 | 0x41, |
| 630 | 0x42, |
| 631 | 0x43, |
| 632 | 0x44, |
| 633 | 0x45, |
| 634 | 0x46, |
| 635 | 0x47, |
| 636 | 0x48, |
| 637 | 0x49, |
| 638 | 0x4a, |
| 639 | 0x4b, |
| 640 | 0x60, |
| 641 | 0x80, |
| 642 | 0xa0, |
| 643 | 0xc0, |
| 644 | -1 |
| 645 | }; |
| 646 | |
| 647 | static const int comp2_opcodes[] = |
| 648 | { |
| 649 | 0x00, |
| 650 | 0x80, |
| 651 | 0x82, |
| 652 | 0xc0, |
| 653 | -1 |
| 654 | }; |
| 655 | |
| 656 | static const int comp3_opcodes[] = |
| 657 | { |
| 658 | 0x00, |
| 659 | 0x02, |
| 660 | -1 |
| 661 | }; |
| 662 | |
| 663 | /* These apparently are not in older versions of hpux reloc.h (hpux7). */ |
| 664 | #ifndef R_DLT_REL |
| 665 | #define R_DLT_REL 0x78 |
| 666 | #endif |
| 667 | |
| 668 | #ifndef R_AUX_UNWIND |
| 669 | #define R_AUX_UNWIND 0xcf |
| 670 | #endif |
| 671 | |
| 672 | #ifndef R_SEC_STMT |
| 673 | #define R_SEC_STMT 0xd7 |
| 674 | #endif |
| 675 | |
| 676 | /* And these first appeared in hpux10. */ |
| 677 | #ifndef R_SHORT_PCREL_MODE |
| 678 | #define NO_PCREL_MODES |
| 679 | #define R_SHORT_PCREL_MODE 0x3e |
| 680 | #endif |
| 681 | |
| 682 | #ifndef R_LONG_PCREL_MODE |
| 683 | #define R_LONG_PCREL_MODE 0x3f |
| 684 | #endif |
| 685 | |
| 686 | #ifndef R_N0SEL |
| 687 | #define R_N0SEL 0xd8 |
| 688 | #endif |
| 689 | |
| 690 | #ifndef R_N1SEL |
| 691 | #define R_N1SEL 0xd9 |
| 692 | #endif |
| 693 | |
| 694 | #ifndef R_LINETAB |
| 695 | #define R_LINETAB 0xda |
| 696 | #endif |
| 697 | |
| 698 | #ifndef R_LINETAB_ESC |
| 699 | #define R_LINETAB_ESC 0xdb |
| 700 | #endif |
| 701 | |
| 702 | #ifndef R_LTP_OVERRIDE |
| 703 | #define R_LTP_OVERRIDE 0xdc |
| 704 | #endif |
| 705 | |
| 706 | #ifndef R_COMMENT |
| 707 | #define R_COMMENT 0xdd |
| 708 | #endif |
| 709 | |
| 710 | #define SOM_HOWTO(TYPE, NAME) \ |
| 711 | HOWTO(TYPE, 0, 0, 32, FALSE, 0, 0, hppa_som_reloc, NAME, FALSE, 0, 0, FALSE) |
| 712 | |
| 713 | static reloc_howto_type som_hppa_howto_table[] = |
| 714 | { |
| 715 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 716 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 717 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 718 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 719 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 720 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 721 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 722 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 723 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 724 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 725 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 726 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 727 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 728 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 729 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 730 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 731 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 732 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 733 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 734 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 735 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 736 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 737 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 738 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 739 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 740 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 741 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 742 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 743 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 744 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 745 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 746 | SOM_HOWTO (R_NO_RELOCATION, "R_NO_RELOCATION"), |
| 747 | SOM_HOWTO (R_ZEROES, "R_ZEROES"), |
| 748 | SOM_HOWTO (R_ZEROES, "R_ZEROES"), |
| 749 | SOM_HOWTO (R_UNINIT, "R_UNINIT"), |
| 750 | SOM_HOWTO (R_UNINIT, "R_UNINIT"), |
| 751 | SOM_HOWTO (R_RELOCATION, "R_RELOCATION"), |
| 752 | SOM_HOWTO (R_DATA_ONE_SYMBOL, "R_DATA_ONE_SYMBOL"), |
| 753 | SOM_HOWTO (R_DATA_ONE_SYMBOL, "R_DATA_ONE_SYMBOL"), |
| 754 | SOM_HOWTO (R_DATA_PLABEL, "R_DATA_PLABEL"), |
| 755 | SOM_HOWTO (R_DATA_PLABEL, "R_DATA_PLABEL"), |
| 756 | SOM_HOWTO (R_SPACE_REF, "R_SPACE_REF"), |
| 757 | SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"), |
| 758 | SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"), |
| 759 | SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"), |
| 760 | SOM_HOWTO (R_REPEATED_INIT, "REPEATED_INIT"), |
| 761 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 762 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 763 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 764 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 765 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 766 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 767 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 768 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 769 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 770 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 771 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 772 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 773 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 774 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 775 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 776 | SOM_HOWTO (R_PCREL_CALL, "R_PCREL_CALL"), |
| 777 | SOM_HOWTO (R_SHORT_PCREL_MODE, "R_SHORT_PCREL_MODE"), |
| 778 | SOM_HOWTO (R_LONG_PCREL_MODE, "R_LONG_PCREL_MODE"), |
| 779 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 780 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 781 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 782 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 783 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 784 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 785 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 786 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 787 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 788 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 789 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 790 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 791 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 792 | SOM_HOWTO (R_ABS_CALL, "R_ABS_CALL"), |
| 793 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 794 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 795 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 796 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 797 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 798 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 799 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 800 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 801 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 802 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 803 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 804 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 805 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 806 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 807 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 808 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 809 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 810 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 811 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 812 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 813 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 814 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 815 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 816 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 817 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 818 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 819 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 820 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 821 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 822 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 823 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 824 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 825 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 826 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 827 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 828 | SOM_HOWTO (R_DP_RELATIVE, "R_DP_RELATIVE"), |
| 829 | SOM_HOWTO (R_DATA_GPREL, "R_DATA_GPREL"), |
| 830 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 831 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 832 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 833 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 834 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 835 | SOM_HOWTO (R_DLT_REL, "R_DLT_REL"), |
| 836 | SOM_HOWTO (R_DLT_REL, "R_DLT_REL"), |
| 837 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 838 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 839 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 840 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 841 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 842 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 843 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 844 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 845 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 846 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 847 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 848 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 849 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 850 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 851 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 852 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 853 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 854 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 855 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 856 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 857 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 858 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 859 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 860 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 861 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 862 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 863 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 864 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 865 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 866 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 867 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 868 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 869 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 870 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 871 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 872 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 873 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 874 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 875 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 876 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 877 | SOM_HOWTO (R_CODE_ONE_SYMBOL, "R_CODE_ONE_SYMBOL"), |
| 878 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 879 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 880 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 881 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 882 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 883 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 884 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 885 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 886 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 887 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 888 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 889 | SOM_HOWTO (R_MILLI_REL, "R_MILLI_REL"), |
| 890 | SOM_HOWTO (R_MILLI_REL, "R_MILLI_REL"), |
| 891 | SOM_HOWTO (R_CODE_PLABEL, "R_CODE_PLABEL"), |
| 892 | SOM_HOWTO (R_CODE_PLABEL, "R_CODE_PLABEL"), |
| 893 | SOM_HOWTO (R_BREAKPOINT, "R_BREAKPOINT"), |
| 894 | SOM_HOWTO (R_ENTRY, "R_ENTRY"), |
| 895 | SOM_HOWTO (R_ENTRY, "R_ENTRY"), |
| 896 | SOM_HOWTO (R_ALT_ENTRY, "R_ALT_ENTRY"), |
| 897 | SOM_HOWTO (R_EXIT, "R_EXIT"), |
| 898 | SOM_HOWTO (R_BEGIN_TRY, "R_BEGIN_TRY"), |
| 899 | SOM_HOWTO (R_END_TRY, "R_END_TRY"), |
| 900 | SOM_HOWTO (R_END_TRY, "R_END_TRY"), |
| 901 | SOM_HOWTO (R_END_TRY, "R_END_TRY"), |
| 902 | SOM_HOWTO (R_BEGIN_BRTAB, "R_BEGIN_BRTAB"), |
| 903 | SOM_HOWTO (R_END_BRTAB, "R_END_BRTAB"), |
| 904 | SOM_HOWTO (R_STATEMENT, "R_STATEMENT"), |
| 905 | SOM_HOWTO (R_STATEMENT, "R_STATEMENT"), |
| 906 | SOM_HOWTO (R_STATEMENT, "R_STATEMENT"), |
| 907 | SOM_HOWTO (R_DATA_EXPR, "R_DATA_EXPR"), |
| 908 | SOM_HOWTO (R_CODE_EXPR, "R_CODE_EXPR"), |
| 909 | SOM_HOWTO (R_FSEL, "R_FSEL"), |
| 910 | SOM_HOWTO (R_LSEL, "R_LSEL"), |
| 911 | SOM_HOWTO (R_RSEL, "R_RSEL"), |
| 912 | SOM_HOWTO (R_N_MODE, "R_N_MODE"), |
| 913 | SOM_HOWTO (R_S_MODE, "R_S_MODE"), |
| 914 | SOM_HOWTO (R_D_MODE, "R_D_MODE"), |
| 915 | SOM_HOWTO (R_R_MODE, "R_R_MODE"), |
| 916 | SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"), |
| 917 | SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"), |
| 918 | SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"), |
| 919 | SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"), |
| 920 | SOM_HOWTO (R_DATA_OVERRIDE, "R_DATA_OVERRIDE"), |
| 921 | SOM_HOWTO (R_TRANSLATED, "R_TRANSLATED"), |
| 922 | SOM_HOWTO (R_AUX_UNWIND, "R_AUX_UNWIND"), |
| 923 | SOM_HOWTO (R_COMP1, "R_COMP1"), |
| 924 | SOM_HOWTO (R_COMP2, "R_COMP2"), |
| 925 | SOM_HOWTO (R_COMP3, "R_COMP3"), |
| 926 | SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"), |
| 927 | SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"), |
| 928 | SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"), |
| 929 | SOM_HOWTO (R_PREV_FIXUP, "R_PREV_FIXUP"), |
| 930 | SOM_HOWTO (R_SEC_STMT, "R_SEC_STMT"), |
| 931 | SOM_HOWTO (R_N0SEL, "R_N0SEL"), |
| 932 | SOM_HOWTO (R_N1SEL, "R_N1SEL"), |
| 933 | SOM_HOWTO (R_LINETAB, "R_LINETAB"), |
| 934 | SOM_HOWTO (R_LINETAB_ESC, "R_LINETAB_ESC"), |
| 935 | SOM_HOWTO (R_LTP_OVERRIDE, "R_LTP_OVERRIDE"), |
| 936 | SOM_HOWTO (R_COMMENT, "R_COMMENT"), |
| 937 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 938 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 939 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 940 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 941 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 942 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 943 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 944 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 945 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 946 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 947 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 948 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 949 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 950 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 951 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 952 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 953 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 954 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 955 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 956 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 957 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 958 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 959 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 960 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 961 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 962 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 963 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 964 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 965 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 966 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 967 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 968 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 969 | SOM_HOWTO (R_RESERVED, "R_RESERVED"), |
| 970 | SOM_HOWTO (R_RESERVED, "R_RESERVED") |
| 971 | }; |
| 972 | |
| 973 | /* Initialize the SOM relocation queue. By definition the queue holds |
| 974 | the last four multibyte fixups. */ |
| 975 | |
| 976 | static void |
| 977 | som_initialize_reloc_queue (struct reloc_queue *queue) |
| 978 | { |
| 979 | queue[0].reloc = NULL; |
| 980 | queue[0].size = 0; |
| 981 | queue[1].reloc = NULL; |
| 982 | queue[1].size = 0; |
| 983 | queue[2].reloc = NULL; |
| 984 | queue[2].size = 0; |
| 985 | queue[3].reloc = NULL; |
| 986 | queue[3].size = 0; |
| 987 | } |
| 988 | |
| 989 | /* Insert a new relocation into the relocation queue. */ |
| 990 | |
| 991 | static void |
| 992 | som_reloc_queue_insert (unsigned char *p, |
| 993 | unsigned int size, |
| 994 | struct reloc_queue *queue) |
| 995 | { |
| 996 | queue[3].reloc = queue[2].reloc; |
| 997 | queue[3].size = queue[2].size; |
| 998 | queue[2].reloc = queue[1].reloc; |
| 999 | queue[2].size = queue[1].size; |
| 1000 | queue[1].reloc = queue[0].reloc; |
| 1001 | queue[1].size = queue[0].size; |
| 1002 | queue[0].reloc = p; |
| 1003 | queue[0].size = size; |
| 1004 | } |
| 1005 | |
| 1006 | /* When an entry in the relocation queue is reused, the entry moves |
| 1007 | to the front of the queue. */ |
| 1008 | |
| 1009 | static void |
| 1010 | som_reloc_queue_fix (struct reloc_queue *queue, unsigned int index) |
| 1011 | { |
| 1012 | if (index == 0) |
| 1013 | return; |
| 1014 | |
| 1015 | if (index == 1) |
| 1016 | { |
| 1017 | unsigned char *tmp1 = queue[0].reloc; |
| 1018 | unsigned int tmp2 = queue[0].size; |
| 1019 | |
| 1020 | queue[0].reloc = queue[1].reloc; |
| 1021 | queue[0].size = queue[1].size; |
| 1022 | queue[1].reloc = tmp1; |
| 1023 | queue[1].size = tmp2; |
| 1024 | return; |
| 1025 | } |
| 1026 | |
| 1027 | if (index == 2) |
| 1028 | { |
| 1029 | unsigned char *tmp1 = queue[0].reloc; |
| 1030 | unsigned int tmp2 = queue[0].size; |
| 1031 | |
| 1032 | queue[0].reloc = queue[2].reloc; |
| 1033 | queue[0].size = queue[2].size; |
| 1034 | queue[2].reloc = queue[1].reloc; |
| 1035 | queue[2].size = queue[1].size; |
| 1036 | queue[1].reloc = tmp1; |
| 1037 | queue[1].size = tmp2; |
| 1038 | return; |
| 1039 | } |
| 1040 | |
| 1041 | if (index == 3) |
| 1042 | { |
| 1043 | unsigned char *tmp1 = queue[0].reloc; |
| 1044 | unsigned int tmp2 = queue[0].size; |
| 1045 | |
| 1046 | queue[0].reloc = queue[3].reloc; |
| 1047 | queue[0].size = queue[3].size; |
| 1048 | queue[3].reloc = queue[2].reloc; |
| 1049 | queue[3].size = queue[2].size; |
| 1050 | queue[2].reloc = queue[1].reloc; |
| 1051 | queue[2].size = queue[1].size; |
| 1052 | queue[1].reloc = tmp1; |
| 1053 | queue[1].size = tmp2; |
| 1054 | return; |
| 1055 | } |
| 1056 | abort (); |
| 1057 | } |
| 1058 | |
| 1059 | /* Search for a particular relocation in the relocation queue. */ |
| 1060 | |
| 1061 | static int |
| 1062 | som_reloc_queue_find (unsigned char *p, |
| 1063 | unsigned int size, |
| 1064 | struct reloc_queue *queue) |
| 1065 | { |
| 1066 | if (queue[0].reloc && !memcmp (p, queue[0].reloc, size) |
| 1067 | && size == queue[0].size) |
| 1068 | return 0; |
| 1069 | if (queue[1].reloc && !memcmp (p, queue[1].reloc, size) |
| 1070 | && size == queue[1].size) |
| 1071 | return 1; |
| 1072 | if (queue[2].reloc && !memcmp (p, queue[2].reloc, size) |
| 1073 | && size == queue[2].size) |
| 1074 | return 2; |
| 1075 | if (queue[3].reloc && !memcmp (p, queue[3].reloc, size) |
| 1076 | && size == queue[3].size) |
| 1077 | return 3; |
| 1078 | return -1; |
| 1079 | } |
| 1080 | |
| 1081 | static unsigned char * |
| 1082 | try_prev_fixup (bfd *abfd ATTRIBUTE_UNUSED, |
| 1083 | unsigned int *subspace_reloc_sizep, |
| 1084 | unsigned char *p, |
| 1085 | unsigned int size, |
| 1086 | struct reloc_queue *queue) |
| 1087 | { |
| 1088 | int queue_index = som_reloc_queue_find (p, size, queue); |
| 1089 | |
| 1090 | if (queue_index != -1) |
| 1091 | { |
| 1092 | /* Found this in a previous fixup. Undo the fixup we |
| 1093 | just built and use R_PREV_FIXUP instead. We saved |
| 1094 | a total of size - 1 bytes in the fixup stream. */ |
| 1095 | bfd_put_8 (abfd, R_PREV_FIXUP + queue_index, p); |
| 1096 | p += 1; |
| 1097 | *subspace_reloc_sizep += 1; |
| 1098 | som_reloc_queue_fix (queue, queue_index); |
| 1099 | } |
| 1100 | else |
| 1101 | { |
| 1102 | som_reloc_queue_insert (p, size, queue); |
| 1103 | *subspace_reloc_sizep += size; |
| 1104 | p += size; |
| 1105 | } |
| 1106 | return p; |
| 1107 | } |
| 1108 | |
| 1109 | /* Emit the proper R_NO_RELOCATION fixups to map the next SKIP |
| 1110 | bytes without any relocation. Update the size of the subspace |
| 1111 | relocation stream via SUBSPACE_RELOC_SIZE_P; also return the |
| 1112 | current pointer into the relocation stream. */ |
| 1113 | |
| 1114 | static unsigned char * |
| 1115 | som_reloc_skip (bfd *abfd, |
| 1116 | unsigned int skip, |
| 1117 | unsigned char *p, |
| 1118 | unsigned int *subspace_reloc_sizep, |
| 1119 | struct reloc_queue *queue) |
| 1120 | { |
| 1121 | /* Use a 4 byte R_NO_RELOCATION entry with a maximal value |
| 1122 | then R_PREV_FIXUPs to get the difference down to a |
| 1123 | reasonable size. */ |
| 1124 | if (skip >= 0x1000000) |
| 1125 | { |
| 1126 | skip -= 0x1000000; |
| 1127 | bfd_put_8 (abfd, R_NO_RELOCATION + 31, p); |
| 1128 | bfd_put_8 (abfd, 0xff, p + 1); |
| 1129 | bfd_put_16 (abfd, (bfd_vma) 0xffff, p + 2); |
| 1130 | p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue); |
| 1131 | while (skip >= 0x1000000) |
| 1132 | { |
| 1133 | skip -= 0x1000000; |
| 1134 | bfd_put_8 (abfd, R_PREV_FIXUP, p); |
| 1135 | p++; |
| 1136 | *subspace_reloc_sizep += 1; |
| 1137 | /* No need to adjust queue here since we are repeating the |
| 1138 | most recent fixup. */ |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | /* The difference must be less than 0x1000000. Use one |
| 1143 | more R_NO_RELOCATION entry to get to the right difference. */ |
| 1144 | if ((skip & 3) == 0 && skip <= 0xc0000 && skip > 0) |
| 1145 | { |
| 1146 | /* Difference can be handled in a simple single-byte |
| 1147 | R_NO_RELOCATION entry. */ |
| 1148 | if (skip <= 0x60) |
| 1149 | { |
| 1150 | bfd_put_8 (abfd, R_NO_RELOCATION + (skip >> 2) - 1, p); |
| 1151 | *subspace_reloc_sizep += 1; |
| 1152 | p++; |
| 1153 | } |
| 1154 | /* Handle it with a two byte R_NO_RELOCATION entry. */ |
| 1155 | else if (skip <= 0x1000) |
| 1156 | { |
| 1157 | bfd_put_8 (abfd, R_NO_RELOCATION + 24 + (((skip >> 2) - 1) >> 8), p); |
| 1158 | bfd_put_8 (abfd, (skip >> 2) - 1, p + 1); |
| 1159 | p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue); |
| 1160 | } |
| 1161 | /* Handle it with a three byte R_NO_RELOCATION entry. */ |
| 1162 | else |
| 1163 | { |
| 1164 | bfd_put_8 (abfd, R_NO_RELOCATION + 28 + (((skip >> 2) - 1) >> 16), p); |
| 1165 | bfd_put_16 (abfd, (bfd_vma) (skip >> 2) - 1, p + 1); |
| 1166 | p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue); |
| 1167 | } |
| 1168 | } |
| 1169 | /* Ugh. Punt and use a 4 byte entry. */ |
| 1170 | else if (skip > 0) |
| 1171 | { |
| 1172 | bfd_put_8 (abfd, R_NO_RELOCATION + 31, p); |
| 1173 | bfd_put_8 (abfd, (skip - 1) >> 16, p + 1); |
| 1174 | bfd_put_16 (abfd, (bfd_vma) skip - 1, p + 2); |
| 1175 | p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue); |
| 1176 | } |
| 1177 | return p; |
| 1178 | } |
| 1179 | |
| 1180 | /* Emit the proper R_DATA_OVERRIDE fixups to handle a nonzero addend |
| 1181 | from a BFD relocation. Update the size of the subspace relocation |
| 1182 | stream via SUBSPACE_RELOC_SIZE_P; also return the current pointer |
| 1183 | into the relocation stream. */ |
| 1184 | |
| 1185 | static unsigned char * |
| 1186 | som_reloc_addend (bfd *abfd, |
| 1187 | bfd_vma addend, |
| 1188 | unsigned char *p, |
| 1189 | unsigned int *subspace_reloc_sizep, |
| 1190 | struct reloc_queue *queue) |
| 1191 | { |
| 1192 | if (addend + 0x80 < 0x100) |
| 1193 | { |
| 1194 | bfd_put_8 (abfd, R_DATA_OVERRIDE + 1, p); |
| 1195 | bfd_put_8 (abfd, addend, p + 1); |
| 1196 | p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue); |
| 1197 | } |
| 1198 | else if (addend + 0x8000 < 0x10000) |
| 1199 | { |
| 1200 | bfd_put_8 (abfd, R_DATA_OVERRIDE + 2, p); |
| 1201 | bfd_put_16 (abfd, addend, p + 1); |
| 1202 | p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue); |
| 1203 | } |
| 1204 | else if (addend + 0x800000 < 0x1000000) |
| 1205 | { |
| 1206 | bfd_put_8 (abfd, R_DATA_OVERRIDE + 3, p); |
| 1207 | bfd_put_8 (abfd, addend >> 16, p + 1); |
| 1208 | bfd_put_16 (abfd, addend, p + 2); |
| 1209 | p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 4, queue); |
| 1210 | } |
| 1211 | else |
| 1212 | { |
| 1213 | bfd_put_8 (abfd, R_DATA_OVERRIDE + 4, p); |
| 1214 | bfd_put_32 (abfd, addend, p + 1); |
| 1215 | p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue); |
| 1216 | } |
| 1217 | return p; |
| 1218 | } |
| 1219 | |
| 1220 | /* Handle a single function call relocation. */ |
| 1221 | |
| 1222 | static unsigned char * |
| 1223 | som_reloc_call (bfd *abfd, |
| 1224 | unsigned char *p, |
| 1225 | unsigned int *subspace_reloc_sizep, |
| 1226 | arelent *bfd_reloc, |
| 1227 | int sym_num, |
| 1228 | struct reloc_queue *queue) |
| 1229 | { |
| 1230 | int arg_bits = HPPA_R_ARG_RELOC (bfd_reloc->addend); |
| 1231 | int rtn_bits = arg_bits & 0x3; |
| 1232 | int type, done = 0; |
| 1233 | |
| 1234 | /* You'll never believe all this is necessary to handle relocations |
| 1235 | for function calls. Having to compute and pack the argument |
| 1236 | relocation bits is the real nightmare. |
| 1237 | |
| 1238 | If you're interested in how this works, just forget it. You really |
| 1239 | do not want to know about this braindamage. */ |
| 1240 | |
| 1241 | /* First see if this can be done with a "simple" relocation. Simple |
| 1242 | relocations have a symbol number < 0x100 and have simple encodings |
| 1243 | of argument relocations. */ |
| 1244 | |
| 1245 | if (sym_num < 0x100) |
| 1246 | { |
| 1247 | switch (arg_bits) |
| 1248 | { |
| 1249 | case 0: |
| 1250 | case 1: |
| 1251 | type = 0; |
| 1252 | break; |
| 1253 | case 1 << 8: |
| 1254 | case 1 << 8 | 1: |
| 1255 | type = 1; |
| 1256 | break; |
| 1257 | case 1 << 8 | 1 << 6: |
| 1258 | case 1 << 8 | 1 << 6 | 1: |
| 1259 | type = 2; |
| 1260 | break; |
| 1261 | case 1 << 8 | 1 << 6 | 1 << 4: |
| 1262 | case 1 << 8 | 1 << 6 | 1 << 4 | 1: |
| 1263 | type = 3; |
| 1264 | break; |
| 1265 | case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2: |
| 1266 | case 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2 | 1: |
| 1267 | type = 4; |
| 1268 | break; |
| 1269 | default: |
| 1270 | /* Not one of the easy encodings. This will have to be |
| 1271 | handled by the more complex code below. */ |
| 1272 | type = -1; |
| 1273 | break; |
| 1274 | } |
| 1275 | if (type != -1) |
| 1276 | { |
| 1277 | /* Account for the return value too. */ |
| 1278 | if (rtn_bits) |
| 1279 | type += 5; |
| 1280 | |
| 1281 | /* Emit a 2 byte relocation. Then see if it can be handled |
| 1282 | with a relocation which is already in the relocation queue. */ |
| 1283 | bfd_put_8 (abfd, bfd_reloc->howto->type + type, p); |
| 1284 | bfd_put_8 (abfd, sym_num, p + 1); |
| 1285 | p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 2, queue); |
| 1286 | done = 1; |
| 1287 | } |
| 1288 | } |
| 1289 | |
| 1290 | /* If this could not be handled with a simple relocation, then do a hard |
| 1291 | one. Hard relocations occur if the symbol number was too high or if |
| 1292 | the encoding of argument relocation bits is too complex. */ |
| 1293 | if (! done) |
| 1294 | { |
| 1295 | /* Don't ask about these magic sequences. I took them straight |
| 1296 | from gas-1.36 which took them from the a.out man page. */ |
| 1297 | type = rtn_bits; |
| 1298 | if ((arg_bits >> 6 & 0xf) == 0xe) |
| 1299 | type += 9 * 40; |
| 1300 | else |
| 1301 | type += (3 * (arg_bits >> 8 & 3) + (arg_bits >> 6 & 3)) * 40; |
| 1302 | if ((arg_bits >> 2 & 0xf) == 0xe) |
| 1303 | type += 9 * 4; |
| 1304 | else |
| 1305 | type += (3 * (arg_bits >> 4 & 3) + (arg_bits >> 2 & 3)) * 4; |
| 1306 | |
| 1307 | /* Output the first two bytes of the relocation. These describe |
| 1308 | the length of the relocation and encoding style. */ |
| 1309 | bfd_put_8 (abfd, bfd_reloc->howto->type + 10 |
| 1310 | + 2 * (sym_num >= 0x100) + (type >= 0x100), |
| 1311 | p); |
| 1312 | bfd_put_8 (abfd, type, p + 1); |
| 1313 | |
| 1314 | /* Now output the symbol index and see if this bizarre relocation |
| 1315 | just happened to be in the relocation queue. */ |
| 1316 | if (sym_num < 0x100) |
| 1317 | { |
| 1318 | bfd_put_8 (abfd, sym_num, p + 2); |
| 1319 | p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 3, queue); |
| 1320 | } |
| 1321 | else |
| 1322 | { |
| 1323 | bfd_put_8 (abfd, sym_num >> 16, p + 2); |
| 1324 | bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3); |
| 1325 | p = try_prev_fixup (abfd, subspace_reloc_sizep, p, 5, queue); |
| 1326 | } |
| 1327 | } |
| 1328 | return p; |
| 1329 | } |
| 1330 | |
| 1331 | /* Return the logarithm of X, base 2, considering X unsigned, |
| 1332 | if X is a power of 2. Otherwise, returns -1. */ |
| 1333 | |
| 1334 | static int |
| 1335 | exact_log2 (unsigned int x) |
| 1336 | { |
| 1337 | int log = 0; |
| 1338 | |
| 1339 | /* Test for 0 or a power of 2. */ |
| 1340 | if (x == 0 || x != (x & -x)) |
| 1341 | return -1; |
| 1342 | |
| 1343 | while ((x >>= 1) != 0) |
| 1344 | log++; |
| 1345 | return log; |
| 1346 | } |
| 1347 | |
| 1348 | static bfd_reloc_status_type |
| 1349 | hppa_som_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
| 1350 | arelent *reloc_entry, |
| 1351 | asymbol *symbol_in ATTRIBUTE_UNUSED, |
| 1352 | void *data ATTRIBUTE_UNUSED, |
| 1353 | asection *input_section, |
| 1354 | bfd *output_bfd, |
| 1355 | char **error_message ATTRIBUTE_UNUSED) |
| 1356 | { |
| 1357 | if (output_bfd) |
| 1358 | reloc_entry->address += input_section->output_offset; |
| 1359 | |
| 1360 | return bfd_reloc_ok; |
| 1361 | } |
| 1362 | |
| 1363 | /* Given a generic HPPA relocation type, the instruction format, |
| 1364 | and a field selector, return one or more appropriate SOM relocations. */ |
| 1365 | |
| 1366 | int ** |
| 1367 | hppa_som_gen_reloc_type (bfd *abfd, |
| 1368 | int base_type, |
| 1369 | int format, |
| 1370 | enum hppa_reloc_field_selector_type_alt field, |
| 1371 | int sym_diff, |
| 1372 | asymbol *sym) |
| 1373 | { |
| 1374 | int *final_type, **final_types; |
| 1375 | |
| 1376 | final_types = bfd_alloc (abfd, (bfd_size_type) sizeof (int *) * 6); |
| 1377 | final_type = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); |
| 1378 | if (!final_types || !final_type) |
| 1379 | return NULL; |
| 1380 | |
| 1381 | /* The field selector may require additional relocations to be |
| 1382 | generated. It's impossible to know at this moment if additional |
| 1383 | relocations will be needed, so we make them. The code to actually |
| 1384 | write the relocation/fixup stream is responsible for removing |
| 1385 | any redundant relocations. */ |
| 1386 | switch (field) |
| 1387 | { |
| 1388 | case e_fsel: |
| 1389 | case e_psel: |
| 1390 | case e_lpsel: |
| 1391 | case e_rpsel: |
| 1392 | final_types[0] = final_type; |
| 1393 | final_types[1] = NULL; |
| 1394 | final_types[2] = NULL; |
| 1395 | *final_type = base_type; |
| 1396 | break; |
| 1397 | |
| 1398 | case e_tsel: |
| 1399 | case e_ltsel: |
| 1400 | case e_rtsel: |
| 1401 | final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); |
| 1402 | if (!final_types[0]) |
| 1403 | return NULL; |
| 1404 | if (field == e_tsel) |
| 1405 | *final_types[0] = R_FSEL; |
| 1406 | else if (field == e_ltsel) |
| 1407 | *final_types[0] = R_LSEL; |
| 1408 | else |
| 1409 | *final_types[0] = R_RSEL; |
| 1410 | final_types[1] = final_type; |
| 1411 | final_types[2] = NULL; |
| 1412 | *final_type = base_type; |
| 1413 | break; |
| 1414 | |
| 1415 | case e_lssel: |
| 1416 | case e_rssel: |
| 1417 | final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); |
| 1418 | if (!final_types[0]) |
| 1419 | return NULL; |
| 1420 | *final_types[0] = R_S_MODE; |
| 1421 | final_types[1] = final_type; |
| 1422 | final_types[2] = NULL; |
| 1423 | *final_type = base_type; |
| 1424 | break; |
| 1425 | |
| 1426 | case e_lsel: |
| 1427 | case e_rsel: |
| 1428 | final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); |
| 1429 | if (!final_types[0]) |
| 1430 | return NULL; |
| 1431 | *final_types[0] = R_N_MODE; |
| 1432 | final_types[1] = final_type; |
| 1433 | final_types[2] = NULL; |
| 1434 | *final_type = base_type; |
| 1435 | break; |
| 1436 | |
| 1437 | case e_ldsel: |
| 1438 | case e_rdsel: |
| 1439 | final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); |
| 1440 | if (!final_types[0]) |
| 1441 | return NULL; |
| 1442 | *final_types[0] = R_D_MODE; |
| 1443 | final_types[1] = final_type; |
| 1444 | final_types[2] = NULL; |
| 1445 | *final_type = base_type; |
| 1446 | break; |
| 1447 | |
| 1448 | case e_lrsel: |
| 1449 | case e_rrsel: |
| 1450 | final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); |
| 1451 | if (!final_types[0]) |
| 1452 | return NULL; |
| 1453 | *final_types[0] = R_R_MODE; |
| 1454 | final_types[1] = final_type; |
| 1455 | final_types[2] = NULL; |
| 1456 | *final_type = base_type; |
| 1457 | break; |
| 1458 | |
| 1459 | case e_nsel: |
| 1460 | final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); |
| 1461 | if (!final_types[0]) |
| 1462 | return NULL; |
| 1463 | *final_types[0] = R_N1SEL; |
| 1464 | final_types[1] = final_type; |
| 1465 | final_types[2] = NULL; |
| 1466 | *final_type = base_type; |
| 1467 | break; |
| 1468 | |
| 1469 | case e_nlsel: |
| 1470 | case e_nlrsel: |
| 1471 | final_types[0] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); |
| 1472 | if (!final_types[0]) |
| 1473 | return NULL; |
| 1474 | *final_types[0] = R_N0SEL; |
| 1475 | final_types[1] = bfd_alloc (abfd, (bfd_size_type) sizeof (int)); |
| 1476 | if (!final_types[1]) |
| 1477 | return NULL; |
| 1478 | if (field == e_nlsel) |
| 1479 | *final_types[1] = R_N_MODE; |
| 1480 | else |
| 1481 | *final_types[1] = R_R_MODE; |
| 1482 | final_types[2] = final_type; |
| 1483 | final_types[3] = NULL; |
| 1484 | *final_type = base_type; |
| 1485 | break; |
| 1486 | |
| 1487 | /* FIXME: These two field selectors are not currently supported. */ |
| 1488 | case e_ltpsel: |
| 1489 | case e_rtpsel: |
| 1490 | abort (); |
| 1491 | } |
| 1492 | |
| 1493 | switch (base_type) |
| 1494 | { |
| 1495 | case R_HPPA: |
| 1496 | /* The difference of two symbols needs *very* special handling. */ |
| 1497 | if (sym_diff) |
| 1498 | { |
| 1499 | bfd_size_type amt = sizeof (int); |
| 1500 | |
| 1501 | final_types[0] = bfd_alloc (abfd, amt); |
| 1502 | final_types[1] = bfd_alloc (abfd, amt); |
| 1503 | final_types[2] = bfd_alloc (abfd, amt); |
| 1504 | final_types[3] = bfd_alloc (abfd, amt); |
| 1505 | if (!final_types[0] || !final_types[1] || !final_types[2]) |
| 1506 | return NULL; |
| 1507 | if (field == e_fsel) |
| 1508 | *final_types[0] = R_FSEL; |
| 1509 | else if (field == e_rsel) |
| 1510 | *final_types[0] = R_RSEL; |
| 1511 | else if (field == e_lsel) |
| 1512 | *final_types[0] = R_LSEL; |
| 1513 | *final_types[1] = R_COMP2; |
| 1514 | *final_types[2] = R_COMP2; |
| 1515 | *final_types[3] = R_COMP1; |
| 1516 | final_types[4] = final_type; |
| 1517 | if (format == 32) |
| 1518 | *final_types[4] = R_DATA_EXPR; |
| 1519 | else |
| 1520 | *final_types[4] = R_CODE_EXPR; |
| 1521 | final_types[5] = NULL; |
| 1522 | break; |
| 1523 | } |
| 1524 | /* PLABELs get their own relocation type. */ |
| 1525 | else if (field == e_psel |
| 1526 | || field == e_lpsel |
| 1527 | || field == e_rpsel) |
| 1528 | { |
| 1529 | /* A PLABEL relocation that has a size of 32 bits must |
| 1530 | be a R_DATA_PLABEL. All others are R_CODE_PLABELs. */ |
| 1531 | if (format == 32) |
| 1532 | *final_type = R_DATA_PLABEL; |
| 1533 | else |
| 1534 | *final_type = R_CODE_PLABEL; |
| 1535 | } |
| 1536 | /* PIC stuff. */ |
| 1537 | else if (field == e_tsel |
| 1538 | || field == e_ltsel |
| 1539 | || field == e_rtsel) |
| 1540 | *final_type = R_DLT_REL; |
| 1541 | /* A relocation in the data space is always a full 32bits. */ |
| 1542 | else if (format == 32) |
| 1543 | { |
| 1544 | *final_type = R_DATA_ONE_SYMBOL; |
| 1545 | |
| 1546 | /* If there's no SOM symbol type associated with this BFD |
| 1547 | symbol, then set the symbol type to ST_DATA. |
| 1548 | |
| 1549 | Only do this if the type is going to default later when |
| 1550 | we write the object file. |
| 1551 | |
| 1552 | This is done so that the linker never encounters an |
| 1553 | R_DATA_ONE_SYMBOL reloc involving an ST_CODE symbol. |
| 1554 | |
| 1555 | This allows the compiler to generate exception handling |
| 1556 | tables. |
| 1557 | |
| 1558 | Note that one day we may need to also emit BEGIN_BRTAB and |
| 1559 | END_BRTAB to prevent the linker from optimizing away insns |
| 1560 | in exception handling regions. */ |
| 1561 | if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN |
| 1562 | && (sym->flags & BSF_SECTION_SYM) == 0 |
| 1563 | && (sym->flags & BSF_FUNCTION) == 0 |
| 1564 | && ! bfd_is_com_section (sym->section)) |
| 1565 | som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA; |
| 1566 | } |
| 1567 | break; |
| 1568 | |
| 1569 | case R_HPPA_GOTOFF: |
| 1570 | /* More PLABEL special cases. */ |
| 1571 | if (field == e_psel |
| 1572 | || field == e_lpsel |
| 1573 | || field == e_rpsel) |
| 1574 | *final_type = R_DATA_PLABEL; |
| 1575 | else if (field == e_fsel && format == 32) |
| 1576 | *final_type = R_DATA_GPREL; |
| 1577 | break; |
| 1578 | |
| 1579 | case R_HPPA_COMPLEX: |
| 1580 | /* The difference of two symbols needs *very* special handling. */ |
| 1581 | if (sym_diff) |
| 1582 | { |
| 1583 | bfd_size_type amt = sizeof (int); |
| 1584 | |
| 1585 | final_types[0] = bfd_alloc (abfd, amt); |
| 1586 | final_types[1] = bfd_alloc (abfd, amt); |
| 1587 | final_types[2] = bfd_alloc (abfd, amt); |
| 1588 | final_types[3] = bfd_alloc (abfd, amt); |
| 1589 | if (!final_types[0] || !final_types[1] || !final_types[2]) |
| 1590 | return NULL; |
| 1591 | if (field == e_fsel) |
| 1592 | *final_types[0] = R_FSEL; |
| 1593 | else if (field == e_rsel) |
| 1594 | *final_types[0] = R_RSEL; |
| 1595 | else if (field == e_lsel) |
| 1596 | *final_types[0] = R_LSEL; |
| 1597 | *final_types[1] = R_COMP2; |
| 1598 | *final_types[2] = R_COMP2; |
| 1599 | *final_types[3] = R_COMP1; |
| 1600 | final_types[4] = final_type; |
| 1601 | if (format == 32) |
| 1602 | *final_types[4] = R_DATA_EXPR; |
| 1603 | else |
| 1604 | *final_types[4] = R_CODE_EXPR; |
| 1605 | final_types[5] = NULL; |
| 1606 | break; |
| 1607 | } |
| 1608 | else |
| 1609 | break; |
| 1610 | |
| 1611 | case R_HPPA_NONE: |
| 1612 | case R_HPPA_ABS_CALL: |
| 1613 | /* Right now we can default all these. */ |
| 1614 | break; |
| 1615 | |
| 1616 | case R_HPPA_PCREL_CALL: |
| 1617 | { |
| 1618 | #ifndef NO_PCREL_MODES |
| 1619 | /* If we have short and long pcrel modes, then generate the proper |
| 1620 | mode selector, then the pcrel relocation. Redundant selectors |
| 1621 | will be eliminated as the relocs are sized and emitted. */ |
| 1622 | bfd_size_type amt = sizeof (int); |
| 1623 | |
| 1624 | final_types[0] = bfd_alloc (abfd, amt); |
| 1625 | if (!final_types[0]) |
| 1626 | return NULL; |
| 1627 | if (format == 17) |
| 1628 | *final_types[0] = R_SHORT_PCREL_MODE; |
| 1629 | else |
| 1630 | *final_types[0] = R_LONG_PCREL_MODE; |
| 1631 | final_types[1] = final_type; |
| 1632 | final_types[2] = NULL; |
| 1633 | *final_type = base_type; |
| 1634 | #endif |
| 1635 | break; |
| 1636 | } |
| 1637 | } |
| 1638 | return final_types; |
| 1639 | } |
| 1640 | |
| 1641 | /* Return the address of the correct entry in the PA SOM relocation |
| 1642 | howto table. */ |
| 1643 | |
| 1644 | static reloc_howto_type * |
| 1645 | som_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 1646 | bfd_reloc_code_real_type code) |
| 1647 | { |
| 1648 | if ((int) code < (int) R_NO_RELOCATION + 255) |
| 1649 | { |
| 1650 | BFD_ASSERT ((int) som_hppa_howto_table[(int) code].type == (int) code); |
| 1651 | return &som_hppa_howto_table[(int) code]; |
| 1652 | } |
| 1653 | |
| 1654 | return NULL; |
| 1655 | } |
| 1656 | |
| 1657 | static reloc_howto_type * |
| 1658 | som_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 1659 | const char *r_name) |
| 1660 | { |
| 1661 | unsigned int i; |
| 1662 | |
| 1663 | for (i = 0; |
| 1664 | i < sizeof (som_hppa_howto_table) / sizeof (som_hppa_howto_table[0]); |
| 1665 | i++) |
| 1666 | if (som_hppa_howto_table[i].name != NULL |
| 1667 | && strcasecmp (som_hppa_howto_table[i].name, r_name) == 0) |
| 1668 | return &som_hppa_howto_table[i]; |
| 1669 | |
| 1670 | return NULL; |
| 1671 | } |
| 1672 | |
| 1673 | /* Perform some initialization for an object. Save results of this |
| 1674 | initialization in the BFD. */ |
| 1675 | |
| 1676 | static const bfd_target * |
| 1677 | som_object_setup (bfd *abfd, |
| 1678 | struct header *file_hdrp, |
| 1679 | struct som_exec_auxhdr *aux_hdrp, |
| 1680 | unsigned long current_offset) |
| 1681 | { |
| 1682 | asection *section; |
| 1683 | |
| 1684 | /* som_mkobject will set bfd_error if som_mkobject fails. */ |
| 1685 | if (! som_mkobject (abfd)) |
| 1686 | return NULL; |
| 1687 | |
| 1688 | /* Set BFD flags based on what information is available in the SOM. */ |
| 1689 | abfd->flags = BFD_NO_FLAGS; |
| 1690 | if (file_hdrp->symbol_total) |
| 1691 | abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; |
| 1692 | |
| 1693 | switch (file_hdrp->a_magic) |
| 1694 | { |
| 1695 | case DEMAND_MAGIC: |
| 1696 | abfd->flags |= (D_PAGED | WP_TEXT | EXEC_P); |
| 1697 | break; |
| 1698 | case SHARE_MAGIC: |
| 1699 | abfd->flags |= (WP_TEXT | EXEC_P); |
| 1700 | break; |
| 1701 | case EXEC_MAGIC: |
| 1702 | abfd->flags |= (EXEC_P); |
| 1703 | break; |
| 1704 | case RELOC_MAGIC: |
| 1705 | abfd->flags |= HAS_RELOC; |
| 1706 | break; |
| 1707 | #ifdef SHL_MAGIC |
| 1708 | case SHL_MAGIC: |
| 1709 | #endif |
| 1710 | #ifdef DL_MAGIC |
| 1711 | case DL_MAGIC: |
| 1712 | #endif |
| 1713 | abfd->flags |= DYNAMIC; |
| 1714 | break; |
| 1715 | |
| 1716 | default: |
| 1717 | break; |
| 1718 | } |
| 1719 | |
| 1720 | /* Save the auxiliary header. */ |
| 1721 | obj_som_exec_hdr (abfd) = aux_hdrp; |
| 1722 | |
| 1723 | /* Allocate space to hold the saved exec header information. */ |
| 1724 | obj_som_exec_data (abfd) = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_exec_data)); |
| 1725 | if (obj_som_exec_data (abfd) == NULL) |
| 1726 | return NULL; |
| 1727 | |
| 1728 | /* The braindamaged OSF1 linker switched exec_flags and exec_entry! |
| 1729 | |
| 1730 | We used to identify OSF1 binaries based on NEW_VERSION_ID, but |
| 1731 | apparently the latest HPUX linker is using NEW_VERSION_ID now. |
| 1732 | |
| 1733 | It's about time, OSF has used the new id since at least 1992; |
| 1734 | HPUX didn't start till nearly 1995!. |
| 1735 | |
| 1736 | The new approach examines the entry field for an executable. If |
| 1737 | it is not 4-byte aligned then it's not a proper code address and |
| 1738 | we guess it's really the executable flags. For a main program, |
| 1739 | we also consider zero to be indicative of a buggy linker, since |
| 1740 | that is not a valid entry point. The entry point for a shared |
| 1741 | library, however, can be zero so we do not consider that to be |
| 1742 | indicative of a buggy linker. */ |
| 1743 | if (aux_hdrp) |
| 1744 | { |
| 1745 | int found = 0; |
| 1746 | |
| 1747 | for (section = abfd->sections; section; section = section->next) |
| 1748 | { |
| 1749 | bfd_vma entry; |
| 1750 | |
| 1751 | if ((section->flags & SEC_CODE) == 0) |
| 1752 | continue; |
| 1753 | entry = aux_hdrp->exec_entry + aux_hdrp->exec_tmem; |
| 1754 | if (entry >= section->vma |
| 1755 | && entry < section->vma + section->size) |
| 1756 | found = 1; |
| 1757 | } |
| 1758 | if ((aux_hdrp->exec_entry == 0 && !(abfd->flags & DYNAMIC)) |
| 1759 | || (aux_hdrp->exec_entry & 0x3) != 0 |
| 1760 | || ! found) |
| 1761 | { |
| 1762 | bfd_get_start_address (abfd) = aux_hdrp->exec_flags; |
| 1763 | obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_entry; |
| 1764 | } |
| 1765 | else |
| 1766 | { |
| 1767 | bfd_get_start_address (abfd) = aux_hdrp->exec_entry + current_offset; |
| 1768 | obj_som_exec_data (abfd)->exec_flags = aux_hdrp->exec_flags; |
| 1769 | } |
| 1770 | } |
| 1771 | |
| 1772 | obj_som_exec_data (abfd)->version_id = file_hdrp->version_id; |
| 1773 | |
| 1774 | bfd_default_set_arch_mach (abfd, bfd_arch_hppa, pa10); |
| 1775 | bfd_get_symcount (abfd) = file_hdrp->symbol_total; |
| 1776 | |
| 1777 | /* Initialize the saved symbol table and string table to NULL. |
| 1778 | Save important offsets and sizes from the SOM header into |
| 1779 | the BFD. */ |
| 1780 | obj_som_stringtab (abfd) = NULL; |
| 1781 | obj_som_symtab (abfd) = NULL; |
| 1782 | obj_som_sorted_syms (abfd) = NULL; |
| 1783 | obj_som_stringtab_size (abfd) = file_hdrp->symbol_strings_size; |
| 1784 | obj_som_sym_filepos (abfd) = file_hdrp->symbol_location + current_offset; |
| 1785 | obj_som_str_filepos (abfd) = (file_hdrp->symbol_strings_location |
| 1786 | + current_offset); |
| 1787 | obj_som_reloc_filepos (abfd) = (file_hdrp->fixup_request_location |
| 1788 | + current_offset); |
| 1789 | obj_som_exec_data (abfd)->system_id = file_hdrp->system_id; |
| 1790 | |
| 1791 | return abfd->xvec; |
| 1792 | } |
| 1793 | |
| 1794 | /* Convert all of the space and subspace info into BFD sections. Each space |
| 1795 | contains a number of subspaces, which in turn describe the mapping between |
| 1796 | regions of the exec file, and the address space that the program runs in. |
| 1797 | BFD sections which correspond to spaces will overlap the sections for the |
| 1798 | associated subspaces. */ |
| 1799 | |
| 1800 | static bfd_boolean |
| 1801 | setup_sections (bfd *abfd, |
| 1802 | struct header *file_hdr, |
| 1803 | unsigned long current_offset) |
| 1804 | { |
| 1805 | char *space_strings; |
| 1806 | unsigned int space_index, i; |
| 1807 | unsigned int total_subspaces = 0; |
| 1808 | asection **subspace_sections = NULL; |
| 1809 | asection *section; |
| 1810 | bfd_size_type amt; |
| 1811 | |
| 1812 | /* First, read in space names. */ |
| 1813 | amt = file_hdr->space_strings_size; |
| 1814 | space_strings = bfd_malloc (amt); |
| 1815 | if (!space_strings && amt != 0) |
| 1816 | goto error_return; |
| 1817 | |
| 1818 | if (bfd_seek (abfd, current_offset + file_hdr->space_strings_location, |
| 1819 | SEEK_SET) != 0) |
| 1820 | goto error_return; |
| 1821 | if (bfd_bread (space_strings, amt, abfd) != amt) |
| 1822 | goto error_return; |
| 1823 | |
| 1824 | /* Loop over all of the space dictionaries, building up sections. */ |
| 1825 | for (space_index = 0; space_index < file_hdr->space_total; space_index++) |
| 1826 | { |
| 1827 | struct space_dictionary_record space; |
| 1828 | struct som_subspace_dictionary_record subspace, save_subspace; |
| 1829 | unsigned int subspace_index; |
| 1830 | asection *space_asect; |
| 1831 | bfd_size_type space_size = 0; |
| 1832 | char *newname; |
| 1833 | |
| 1834 | /* Read the space dictionary element. */ |
| 1835 | if (bfd_seek (abfd, |
| 1836 | (current_offset + file_hdr->space_location |
| 1837 | + space_index * sizeof space), |
| 1838 | SEEK_SET) != 0) |
| 1839 | goto error_return; |
| 1840 | amt = sizeof space; |
| 1841 | if (bfd_bread (&space, amt, abfd) != amt) |
| 1842 | goto error_return; |
| 1843 | |
| 1844 | /* Setup the space name string. */ |
| 1845 | space.name.n_name = space.name.n_strx + space_strings; |
| 1846 | |
| 1847 | /* Make a section out of it. */ |
| 1848 | amt = strlen (space.name.n_name) + 1; |
| 1849 | newname = bfd_alloc (abfd, amt); |
| 1850 | if (!newname) |
| 1851 | goto error_return; |
| 1852 | strcpy (newname, space.name.n_name); |
| 1853 | |
| 1854 | space_asect = bfd_make_section_anyway (abfd, newname); |
| 1855 | if (!space_asect) |
| 1856 | goto error_return; |
| 1857 | |
| 1858 | if (space.is_loadable == 0) |
| 1859 | space_asect->flags |= SEC_DEBUGGING; |
| 1860 | |
| 1861 | /* Set up all the attributes for the space. */ |
| 1862 | if (! bfd_som_set_section_attributes (space_asect, space.is_defined, |
| 1863 | space.is_private, space.sort_key, |
| 1864 | space.space_number)) |
| 1865 | goto error_return; |
| 1866 | |
| 1867 | /* If the space has no subspaces, then we're done. */ |
| 1868 | if (space.subspace_quantity == 0) |
| 1869 | continue; |
| 1870 | |
| 1871 | /* Now, read in the first subspace for this space. */ |
| 1872 | if (bfd_seek (abfd, |
| 1873 | (current_offset + file_hdr->subspace_location |
| 1874 | + space.subspace_index * sizeof subspace), |
| 1875 | SEEK_SET) != 0) |
| 1876 | goto error_return; |
| 1877 | amt = sizeof subspace; |
| 1878 | if (bfd_bread (&subspace, amt, abfd) != amt) |
| 1879 | goto error_return; |
| 1880 | /* Seek back to the start of the subspaces for loop below. */ |
| 1881 | if (bfd_seek (abfd, |
| 1882 | (current_offset + file_hdr->subspace_location |
| 1883 | + space.subspace_index * sizeof subspace), |
| 1884 | SEEK_SET) != 0) |
| 1885 | goto error_return; |
| 1886 | |
| 1887 | /* Setup the start address and file loc from the first subspace |
| 1888 | record. */ |
| 1889 | space_asect->vma = subspace.subspace_start; |
| 1890 | space_asect->filepos = subspace.file_loc_init_value + current_offset; |
| 1891 | space_asect->alignment_power = exact_log2 (subspace.alignment); |
| 1892 | if (space_asect->alignment_power == (unsigned) -1) |
| 1893 | goto error_return; |
| 1894 | |
| 1895 | /* Initialize save_subspace so we can reliably determine if this |
| 1896 | loop placed any useful values into it. */ |
| 1897 | memset (&save_subspace, 0, sizeof (save_subspace)); |
| 1898 | |
| 1899 | /* Loop over the rest of the subspaces, building up more sections. */ |
| 1900 | for (subspace_index = 0; subspace_index < space.subspace_quantity; |
| 1901 | subspace_index++) |
| 1902 | { |
| 1903 | asection *subspace_asect; |
| 1904 | |
| 1905 | /* Read in the next subspace. */ |
| 1906 | amt = sizeof subspace; |
| 1907 | if (bfd_bread (&subspace, amt, abfd) != amt) |
| 1908 | goto error_return; |
| 1909 | |
| 1910 | /* Setup the subspace name string. */ |
| 1911 | subspace.name.n_name = subspace.name.n_strx + space_strings; |
| 1912 | |
| 1913 | amt = strlen (subspace.name.n_name) + 1; |
| 1914 | newname = bfd_alloc (abfd, amt); |
| 1915 | if (!newname) |
| 1916 | goto error_return; |
| 1917 | strcpy (newname, subspace.name.n_name); |
| 1918 | |
| 1919 | /* Make a section out of this subspace. */ |
| 1920 | subspace_asect = bfd_make_section_anyway (abfd, newname); |
| 1921 | if (!subspace_asect) |
| 1922 | goto error_return; |
| 1923 | |
| 1924 | /* Store private information about the section. */ |
| 1925 | if (! bfd_som_set_subsection_attributes (subspace_asect, space_asect, |
| 1926 | subspace.access_control_bits, |
| 1927 | subspace.sort_key, |
| 1928 | subspace.quadrant, |
| 1929 | subspace.is_comdat, |
| 1930 | subspace.is_common, |
| 1931 | subspace.dup_common)) |
| 1932 | goto error_return; |
| 1933 | |
| 1934 | /* Keep an easy mapping between subspaces and sections. |
| 1935 | Note we do not necessarily read the subspaces in the |
| 1936 | same order in which they appear in the object file. |
| 1937 | |
| 1938 | So to make the target index come out correctly, we |
| 1939 | store the location of the subspace header in target |
| 1940 | index, then sort using the location of the subspace |
| 1941 | header as the key. Then we can assign correct |
| 1942 | subspace indices. */ |
| 1943 | total_subspaces++; |
| 1944 | subspace_asect->target_index = bfd_tell (abfd) - sizeof (subspace); |
| 1945 | |
| 1946 | /* Set SEC_READONLY and SEC_CODE/SEC_DATA as specified |
| 1947 | by the access_control_bits in the subspace header. */ |
| 1948 | switch (subspace.access_control_bits >> 4) |
| 1949 | { |
| 1950 | /* Readonly data. */ |
| 1951 | case 0x0: |
| 1952 | subspace_asect->flags |= SEC_DATA | SEC_READONLY; |
| 1953 | break; |
| 1954 | |
| 1955 | /* Normal data. */ |
| 1956 | case 0x1: |
| 1957 | subspace_asect->flags |= SEC_DATA; |
| 1958 | break; |
| 1959 | |
| 1960 | /* Readonly code and the gateways. |
| 1961 | Gateways have other attributes which do not map |
| 1962 | into anything BFD knows about. */ |
| 1963 | case 0x2: |
| 1964 | case 0x4: |
| 1965 | case 0x5: |
| 1966 | case 0x6: |
| 1967 | case 0x7: |
| 1968 | subspace_asect->flags |= SEC_CODE | SEC_READONLY; |
| 1969 | break; |
| 1970 | |
| 1971 | /* dynamic (writable) code. */ |
| 1972 | case 0x3: |
| 1973 | subspace_asect->flags |= SEC_CODE; |
| 1974 | break; |
| 1975 | } |
| 1976 | |
| 1977 | if (subspace.is_comdat || subspace.is_common || subspace.dup_common) |
| 1978 | subspace_asect->flags |= SEC_LINK_ONCE; |
| 1979 | |
| 1980 | if (subspace.subspace_length > 0) |
| 1981 | subspace_asect->flags |= SEC_HAS_CONTENTS; |
| 1982 | |
| 1983 | if (subspace.is_loadable) |
| 1984 | subspace_asect->flags |= SEC_ALLOC | SEC_LOAD; |
| 1985 | else |
| 1986 | subspace_asect->flags |= SEC_DEBUGGING; |
| 1987 | |
| 1988 | if (subspace.code_only) |
| 1989 | subspace_asect->flags |= SEC_CODE; |
| 1990 | |
| 1991 | /* Both file_loc_init_value and initialization_length will |
| 1992 | be zero for a BSS like subspace. */ |
| 1993 | if (subspace.file_loc_init_value == 0 |
| 1994 | && subspace.initialization_length == 0) |
| 1995 | subspace_asect->flags &= ~(SEC_DATA | SEC_LOAD | SEC_HAS_CONTENTS); |
| 1996 | |
| 1997 | /* This subspace has relocations. |
| 1998 | The fixup_request_quantity is a byte count for the number of |
| 1999 | entries in the relocation stream; it is not the actual number |
| 2000 | of relocations in the subspace. */ |
| 2001 | if (subspace.fixup_request_quantity != 0) |
| 2002 | { |
| 2003 | subspace_asect->flags |= SEC_RELOC; |
| 2004 | subspace_asect->rel_filepos = subspace.fixup_request_index; |
| 2005 | som_section_data (subspace_asect)->reloc_size |
| 2006 | = subspace.fixup_request_quantity; |
| 2007 | /* We can not determine this yet. When we read in the |
| 2008 | relocation table the correct value will be filled in. */ |
| 2009 | subspace_asect->reloc_count = (unsigned) -1; |
| 2010 | } |
| 2011 | |
| 2012 | /* Update save_subspace if appropriate. */ |
| 2013 | if (subspace.file_loc_init_value > save_subspace.file_loc_init_value) |
| 2014 | save_subspace = subspace; |
| 2015 | |
| 2016 | subspace_asect->vma = subspace.subspace_start; |
| 2017 | subspace_asect->size = subspace.subspace_length; |
| 2018 | subspace_asect->filepos = (subspace.file_loc_init_value |
| 2019 | + current_offset); |
| 2020 | subspace_asect->alignment_power = exact_log2 (subspace.alignment); |
| 2021 | if (subspace_asect->alignment_power == (unsigned) -1) |
| 2022 | goto error_return; |
| 2023 | |
| 2024 | /* Keep track of the accumulated sizes of the sections. */ |
| 2025 | space_size += subspace.subspace_length; |
| 2026 | } |
| 2027 | |
| 2028 | /* This can happen for a .o which defines symbols in otherwise |
| 2029 | empty subspaces. */ |
| 2030 | if (!save_subspace.file_loc_init_value) |
| 2031 | space_asect->size = 0; |
| 2032 | else |
| 2033 | { |
| 2034 | if (file_hdr->a_magic != RELOC_MAGIC) |
| 2035 | { |
| 2036 | /* Setup the size for the space section based upon the info |
| 2037 | in the last subspace of the space. */ |
| 2038 | space_asect->size = (save_subspace.subspace_start |
| 2039 | - space_asect->vma |
| 2040 | + save_subspace.subspace_length); |
| 2041 | } |
| 2042 | else |
| 2043 | { |
| 2044 | /* The subspace_start field is not initialised in relocatable |
| 2045 | only objects, so it cannot be used for length calculations. |
| 2046 | Instead we use the space_size value which we have been |
| 2047 | accumulating. This isn't an accurate estimate since it |
| 2048 | ignores alignment and ordering issues. */ |
| 2049 | space_asect->size = space_size; |
| 2050 | } |
| 2051 | } |
| 2052 | } |
| 2053 | /* Now that we've read in all the subspace records, we need to assign |
| 2054 | a target index to each subspace. */ |
| 2055 | amt = total_subspaces; |
| 2056 | amt *= sizeof (asection *); |
| 2057 | subspace_sections = bfd_malloc (amt); |
| 2058 | if (subspace_sections == NULL) |
| 2059 | goto error_return; |
| 2060 | |
| 2061 | for (i = 0, section = abfd->sections; section; section = section->next) |
| 2062 | { |
| 2063 | if (!som_is_subspace (section)) |
| 2064 | continue; |
| 2065 | |
| 2066 | subspace_sections[i] = section; |
| 2067 | i++; |
| 2068 | } |
| 2069 | qsort (subspace_sections, total_subspaces, |
| 2070 | sizeof (asection *), compare_subspaces); |
| 2071 | |
| 2072 | /* subspace_sections is now sorted in the order in which the subspaces |
| 2073 | appear in the object file. Assign an index to each one now. */ |
| 2074 | for (i = 0; i < total_subspaces; i++) |
| 2075 | subspace_sections[i]->target_index = i; |
| 2076 | |
| 2077 | if (space_strings != NULL) |
| 2078 | free (space_strings); |
| 2079 | |
| 2080 | if (subspace_sections != NULL) |
| 2081 | free (subspace_sections); |
| 2082 | |
| 2083 | return TRUE; |
| 2084 | |
| 2085 | error_return: |
| 2086 | if (space_strings != NULL) |
| 2087 | free (space_strings); |
| 2088 | |
| 2089 | if (subspace_sections != NULL) |
| 2090 | free (subspace_sections); |
| 2091 | return FALSE; |
| 2092 | } |
| 2093 | |
| 2094 | /* Read in a SOM object and make it into a BFD. */ |
| 2095 | |
| 2096 | static const bfd_target * |
| 2097 | som_object_p (bfd *abfd) |
| 2098 | { |
| 2099 | struct header file_hdr; |
| 2100 | struct som_exec_auxhdr *aux_hdr_ptr = NULL; |
| 2101 | unsigned long current_offset = 0; |
| 2102 | struct lst_header lst_header; |
| 2103 | struct som_entry som_entry; |
| 2104 | bfd_size_type amt; |
| 2105 | #define ENTRY_SIZE sizeof (struct som_entry) |
| 2106 | |
| 2107 | amt = FILE_HDR_SIZE; |
| 2108 | if (bfd_bread ((void *) &file_hdr, amt, abfd) != amt) |
| 2109 | { |
| 2110 | if (bfd_get_error () != bfd_error_system_call) |
| 2111 | bfd_set_error (bfd_error_wrong_format); |
| 2112 | return NULL; |
| 2113 | } |
| 2114 | |
| 2115 | if (!_PA_RISC_ID (file_hdr.system_id)) |
| 2116 | { |
| 2117 | bfd_set_error (bfd_error_wrong_format); |
| 2118 | return NULL; |
| 2119 | } |
| 2120 | |
| 2121 | switch (file_hdr.a_magic) |
| 2122 | { |
| 2123 | case RELOC_MAGIC: |
| 2124 | case EXEC_MAGIC: |
| 2125 | case SHARE_MAGIC: |
| 2126 | case DEMAND_MAGIC: |
| 2127 | #ifdef DL_MAGIC |
| 2128 | case DL_MAGIC: |
| 2129 | #endif |
| 2130 | #ifdef SHL_MAGIC |
| 2131 | case SHL_MAGIC: |
| 2132 | #endif |
| 2133 | #ifdef SHARED_MAGIC_CNX |
| 2134 | case SHARED_MAGIC_CNX: |
| 2135 | #endif |
| 2136 | break; |
| 2137 | |
| 2138 | #ifdef EXECLIBMAGIC |
| 2139 | case EXECLIBMAGIC: |
| 2140 | /* Read the lst header and determine where the SOM directory begins. */ |
| 2141 | |
| 2142 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
| 2143 | { |
| 2144 | if (bfd_get_error () != bfd_error_system_call) |
| 2145 | bfd_set_error (bfd_error_wrong_format); |
| 2146 | return NULL; |
| 2147 | } |
| 2148 | |
| 2149 | amt = SLSTHDR; |
| 2150 | if (bfd_bread ((void *) &lst_header, amt, abfd) != amt) |
| 2151 | { |
| 2152 | if (bfd_get_error () != bfd_error_system_call) |
| 2153 | bfd_set_error (bfd_error_wrong_format); |
| 2154 | return NULL; |
| 2155 | } |
| 2156 | |
| 2157 | /* Position to and read the first directory entry. */ |
| 2158 | |
| 2159 | if (bfd_seek (abfd, lst_header.dir_loc, SEEK_SET) != 0) |
| 2160 | { |
| 2161 | if (bfd_get_error () != bfd_error_system_call) |
| 2162 | bfd_set_error (bfd_error_wrong_format); |
| 2163 | return NULL; |
| 2164 | } |
| 2165 | |
| 2166 | amt = ENTRY_SIZE; |
| 2167 | if (bfd_bread ((void *) &som_entry, amt, abfd) != amt) |
| 2168 | { |
| 2169 | if (bfd_get_error () != bfd_error_system_call) |
| 2170 | bfd_set_error (bfd_error_wrong_format); |
| 2171 | return NULL; |
| 2172 | } |
| 2173 | |
| 2174 | /* Now position to the first SOM. */ |
| 2175 | |
| 2176 | if (bfd_seek (abfd, som_entry.location, SEEK_SET) != 0) |
| 2177 | { |
| 2178 | if (bfd_get_error () != bfd_error_system_call) |
| 2179 | bfd_set_error (bfd_error_wrong_format); |
| 2180 | return NULL; |
| 2181 | } |
| 2182 | |
| 2183 | current_offset = som_entry.location; |
| 2184 | |
| 2185 | /* And finally, re-read the som header. */ |
| 2186 | amt = FILE_HDR_SIZE; |
| 2187 | if (bfd_bread ((void *) &file_hdr, amt, abfd) != amt) |
| 2188 | { |
| 2189 | if (bfd_get_error () != bfd_error_system_call) |
| 2190 | bfd_set_error (bfd_error_wrong_format); |
| 2191 | return NULL; |
| 2192 | } |
| 2193 | |
| 2194 | break; |
| 2195 | #endif |
| 2196 | |
| 2197 | default: |
| 2198 | bfd_set_error (bfd_error_wrong_format); |
| 2199 | return NULL; |
| 2200 | } |
| 2201 | |
| 2202 | if (file_hdr.version_id != VERSION_ID |
| 2203 | && file_hdr.version_id != NEW_VERSION_ID) |
| 2204 | { |
| 2205 | bfd_set_error (bfd_error_wrong_format); |
| 2206 | return NULL; |
| 2207 | } |
| 2208 | |
| 2209 | /* If the aux_header_size field in the file header is zero, then this |
| 2210 | object is an incomplete executable (a .o file). Do not try to read |
| 2211 | a non-existant auxiliary header. */ |
| 2212 | if (file_hdr.aux_header_size != 0) |
| 2213 | { |
| 2214 | aux_hdr_ptr = bfd_zalloc (abfd, |
| 2215 | (bfd_size_type) sizeof (*aux_hdr_ptr)); |
| 2216 | if (aux_hdr_ptr == NULL) |
| 2217 | return NULL; |
| 2218 | amt = AUX_HDR_SIZE; |
| 2219 | if (bfd_bread ((void *) aux_hdr_ptr, amt, abfd) != amt) |
| 2220 | { |
| 2221 | if (bfd_get_error () != bfd_error_system_call) |
| 2222 | bfd_set_error (bfd_error_wrong_format); |
| 2223 | return NULL; |
| 2224 | } |
| 2225 | } |
| 2226 | |
| 2227 | if (!setup_sections (abfd, &file_hdr, current_offset)) |
| 2228 | { |
| 2229 | /* setup_sections does not bubble up a bfd error code. */ |
| 2230 | bfd_set_error (bfd_error_bad_value); |
| 2231 | return NULL; |
| 2232 | } |
| 2233 | |
| 2234 | /* This appears to be a valid SOM object. Do some initialization. */ |
| 2235 | return som_object_setup (abfd, &file_hdr, aux_hdr_ptr, current_offset); |
| 2236 | } |
| 2237 | |
| 2238 | /* Create a SOM object. */ |
| 2239 | |
| 2240 | static bfd_boolean |
| 2241 | som_mkobject (bfd *abfd) |
| 2242 | { |
| 2243 | /* Allocate memory to hold backend information. */ |
| 2244 | abfd->tdata.som_data = bfd_zalloc (abfd, (bfd_size_type) sizeof (struct som_data_struct)); |
| 2245 | if (abfd->tdata.som_data == NULL) |
| 2246 | return FALSE; |
| 2247 | return TRUE; |
| 2248 | } |
| 2249 | |
| 2250 | /* Initialize some information in the file header. This routine makes |
| 2251 | not attempt at doing the right thing for a full executable; it |
| 2252 | is only meant to handle relocatable objects. */ |
| 2253 | |
| 2254 | static bfd_boolean |
| 2255 | som_prep_headers (bfd *abfd) |
| 2256 | { |
| 2257 | struct header *file_hdr; |
| 2258 | asection *section; |
| 2259 | bfd_size_type amt = sizeof (struct header); |
| 2260 | |
| 2261 | /* Make and attach a file header to the BFD. */ |
| 2262 | file_hdr = bfd_zalloc (abfd, amt); |
| 2263 | if (file_hdr == NULL) |
| 2264 | return FALSE; |
| 2265 | obj_som_file_hdr (abfd) = file_hdr; |
| 2266 | |
| 2267 | if (abfd->flags & (EXEC_P | DYNAMIC)) |
| 2268 | { |
| 2269 | /* Make and attach an exec header to the BFD. */ |
| 2270 | amt = sizeof (struct som_exec_auxhdr); |
| 2271 | obj_som_exec_hdr (abfd) = bfd_zalloc (abfd, amt); |
| 2272 | if (obj_som_exec_hdr (abfd) == NULL) |
| 2273 | return FALSE; |
| 2274 | |
| 2275 | if (abfd->flags & D_PAGED) |
| 2276 | file_hdr->a_magic = DEMAND_MAGIC; |
| 2277 | else if (abfd->flags & WP_TEXT) |
| 2278 | file_hdr->a_magic = SHARE_MAGIC; |
| 2279 | #ifdef SHL_MAGIC |
| 2280 | else if (abfd->flags & DYNAMIC) |
| 2281 | file_hdr->a_magic = SHL_MAGIC; |
| 2282 | #endif |
| 2283 | else |
| 2284 | file_hdr->a_magic = EXEC_MAGIC; |
| 2285 | } |
| 2286 | else |
| 2287 | file_hdr->a_magic = RELOC_MAGIC; |
| 2288 | |
| 2289 | /* These fields are optional, and embedding timestamps is not always |
| 2290 | a wise thing to do, it makes comparing objects during a multi-stage |
| 2291 | bootstrap difficult. */ |
| 2292 | file_hdr->file_time.secs = 0; |
| 2293 | file_hdr->file_time.nanosecs = 0; |
| 2294 | |
| 2295 | file_hdr->entry_space = 0; |
| 2296 | file_hdr->entry_subspace = 0; |
| 2297 | file_hdr->entry_offset = 0; |
| 2298 | file_hdr->presumed_dp = 0; |
| 2299 | |
| 2300 | /* Now iterate over the sections translating information from |
| 2301 | BFD sections to SOM spaces/subspaces. */ |
| 2302 | for (section = abfd->sections; section != NULL; section = section->next) |
| 2303 | { |
| 2304 | /* Ignore anything which has not been marked as a space or |
| 2305 | subspace. */ |
| 2306 | if (!som_is_space (section) && !som_is_subspace (section)) |
| 2307 | continue; |
| 2308 | |
| 2309 | if (som_is_space (section)) |
| 2310 | { |
| 2311 | /* Allocate space for the space dictionary. */ |
| 2312 | amt = sizeof (struct space_dictionary_record); |
| 2313 | som_section_data (section)->space_dict = bfd_zalloc (abfd, amt); |
| 2314 | if (som_section_data (section)->space_dict == NULL) |
| 2315 | return FALSE; |
| 2316 | /* Set space attributes. Note most attributes of SOM spaces |
| 2317 | are set based on the subspaces it contains. */ |
| 2318 | som_section_data (section)->space_dict->loader_fix_index = -1; |
| 2319 | som_section_data (section)->space_dict->init_pointer_index = -1; |
| 2320 | |
| 2321 | /* Set more attributes that were stuffed away in private data. */ |
| 2322 | som_section_data (section)->space_dict->sort_key = |
| 2323 | som_section_data (section)->copy_data->sort_key; |
| 2324 | som_section_data (section)->space_dict->is_defined = |
| 2325 | som_section_data (section)->copy_data->is_defined; |
| 2326 | som_section_data (section)->space_dict->is_private = |
| 2327 | som_section_data (section)->copy_data->is_private; |
| 2328 | som_section_data (section)->space_dict->space_number = |
| 2329 | som_section_data (section)->copy_data->space_number; |
| 2330 | } |
| 2331 | else |
| 2332 | { |
| 2333 | /* Allocate space for the subspace dictionary. */ |
| 2334 | amt = sizeof (struct som_subspace_dictionary_record); |
| 2335 | som_section_data (section)->subspace_dict = bfd_zalloc (abfd, amt); |
| 2336 | if (som_section_data (section)->subspace_dict == NULL) |
| 2337 | return FALSE; |
| 2338 | |
| 2339 | /* Set subspace attributes. Basic stuff is done here, additional |
| 2340 | attributes are filled in later as more information becomes |
| 2341 | available. */ |
| 2342 | if (section->flags & SEC_ALLOC) |
| 2343 | som_section_data (section)->subspace_dict->is_loadable = 1; |
| 2344 | |
| 2345 | if (section->flags & SEC_CODE) |
| 2346 | som_section_data (section)->subspace_dict->code_only = 1; |
| 2347 | |
| 2348 | som_section_data (section)->subspace_dict->subspace_start = |
| 2349 | section->vma; |
| 2350 | som_section_data (section)->subspace_dict->subspace_length = |
| 2351 | section->size; |
| 2352 | som_section_data (section)->subspace_dict->initialization_length = |
| 2353 | section->size; |
| 2354 | som_section_data (section)->subspace_dict->alignment = |
| 2355 | 1 << section->alignment_power; |
| 2356 | |
| 2357 | /* Set more attributes that were stuffed away in private data. */ |
| 2358 | som_section_data (section)->subspace_dict->sort_key = |
| 2359 | som_section_data (section)->copy_data->sort_key; |
| 2360 | som_section_data (section)->subspace_dict->access_control_bits = |
| 2361 | som_section_data (section)->copy_data->access_control_bits; |
| 2362 | som_section_data (section)->subspace_dict->quadrant = |
| 2363 | som_section_data (section)->copy_data->quadrant; |
| 2364 | som_section_data (section)->subspace_dict->is_comdat = |
| 2365 | som_section_data (section)->copy_data->is_comdat; |
| 2366 | som_section_data (section)->subspace_dict->is_common = |
| 2367 | som_section_data (section)->copy_data->is_common; |
| 2368 | som_section_data (section)->subspace_dict->dup_common = |
| 2369 | som_section_data (section)->copy_data->dup_common; |
| 2370 | } |
| 2371 | } |
| 2372 | return TRUE; |
| 2373 | } |
| 2374 | |
| 2375 | /* Return TRUE if the given section is a SOM space, FALSE otherwise. */ |
| 2376 | |
| 2377 | static bfd_boolean |
| 2378 | som_is_space (asection *section) |
| 2379 | { |
| 2380 | /* If no copy data is available, then it's neither a space nor a |
| 2381 | subspace. */ |
| 2382 | if (som_section_data (section)->copy_data == NULL) |
| 2383 | return FALSE; |
| 2384 | |
| 2385 | /* If the containing space isn't the same as the given section, |
| 2386 | then this isn't a space. */ |
| 2387 | if (som_section_data (section)->copy_data->container != section |
| 2388 | && (som_section_data (section)->copy_data->container->output_section |
| 2389 | != section)) |
| 2390 | return FALSE; |
| 2391 | |
| 2392 | /* OK. Must be a space. */ |
| 2393 | return TRUE; |
| 2394 | } |
| 2395 | |
| 2396 | /* Return TRUE if the given section is a SOM subspace, FALSE otherwise. */ |
| 2397 | |
| 2398 | static bfd_boolean |
| 2399 | som_is_subspace (asection *section) |
| 2400 | { |
| 2401 | /* If no copy data is available, then it's neither a space nor a |
| 2402 | subspace. */ |
| 2403 | if (som_section_data (section)->copy_data == NULL) |
| 2404 | return FALSE; |
| 2405 | |
| 2406 | /* If the containing space is the same as the given section, |
| 2407 | then this isn't a subspace. */ |
| 2408 | if (som_section_data (section)->copy_data->container == section |
| 2409 | || (som_section_data (section)->copy_data->container->output_section |
| 2410 | == section)) |
| 2411 | return FALSE; |
| 2412 | |
| 2413 | /* OK. Must be a subspace. */ |
| 2414 | return TRUE; |
| 2415 | } |
| 2416 | |
| 2417 | /* Return TRUE if the given space contains the given subspace. It |
| 2418 | is safe to assume space really is a space, and subspace really |
| 2419 | is a subspace. */ |
| 2420 | |
| 2421 | static bfd_boolean |
| 2422 | som_is_container (asection *space, asection *subspace) |
| 2423 | { |
| 2424 | return (som_section_data (subspace)->copy_data->container == space) |
| 2425 | || (som_section_data (subspace)->copy_data->container->output_section |
| 2426 | == space); |
| 2427 | } |
| 2428 | |
| 2429 | /* Count and return the number of spaces attached to the given BFD. */ |
| 2430 | |
| 2431 | static unsigned long |
| 2432 | som_count_spaces (bfd *abfd) |
| 2433 | { |
| 2434 | int count = 0; |
| 2435 | asection *section; |
| 2436 | |
| 2437 | for (section = abfd->sections; section != NULL; section = section->next) |
| 2438 | count += som_is_space (section); |
| 2439 | |
| 2440 | return count; |
| 2441 | } |
| 2442 | |
| 2443 | /* Count the number of subspaces attached to the given BFD. */ |
| 2444 | |
| 2445 | static unsigned long |
| 2446 | som_count_subspaces (bfd *abfd) |
| 2447 | { |
| 2448 | int count = 0; |
| 2449 | asection *section; |
| 2450 | |
| 2451 | for (section = abfd->sections; section != NULL; section = section->next) |
| 2452 | count += som_is_subspace (section); |
| 2453 | |
| 2454 | return count; |
| 2455 | } |
| 2456 | |
| 2457 | /* Return -1, 0, 1 indicating the relative ordering of sym1 and sym2. |
| 2458 | |
| 2459 | We desire symbols to be ordered starting with the symbol with the |
| 2460 | highest relocation count down to the symbol with the lowest relocation |
| 2461 | count. Doing so compacts the relocation stream. */ |
| 2462 | |
| 2463 | static int |
| 2464 | compare_syms (const void *arg1, const void *arg2) |
| 2465 | { |
| 2466 | asymbol **sym1 = (asymbol **) arg1; |
| 2467 | asymbol **sym2 = (asymbol **) arg2; |
| 2468 | unsigned int count1, count2; |
| 2469 | |
| 2470 | /* Get relocation count for each symbol. Note that the count |
| 2471 | is stored in the udata pointer for section symbols! */ |
| 2472 | if ((*sym1)->flags & BSF_SECTION_SYM) |
| 2473 | count1 = (*sym1)->udata.i; |
| 2474 | else |
| 2475 | count1 = som_symbol_data (*sym1)->reloc_count; |
| 2476 | |
| 2477 | if ((*sym2)->flags & BSF_SECTION_SYM) |
| 2478 | count2 = (*sym2)->udata.i; |
| 2479 | else |
| 2480 | count2 = som_symbol_data (*sym2)->reloc_count; |
| 2481 | |
| 2482 | /* Return the appropriate value. */ |
| 2483 | if (count1 < count2) |
| 2484 | return 1; |
| 2485 | else if (count1 > count2) |
| 2486 | return -1; |
| 2487 | return 0; |
| 2488 | } |
| 2489 | |
| 2490 | /* Return -1, 0, 1 indicating the relative ordering of subspace1 |
| 2491 | and subspace. */ |
| 2492 | |
| 2493 | static int |
| 2494 | compare_subspaces (const void *arg1, const void *arg2) |
| 2495 | { |
| 2496 | asection **subspace1 = (asection **) arg1; |
| 2497 | asection **subspace2 = (asection **) arg2; |
| 2498 | |
| 2499 | if ((*subspace1)->target_index < (*subspace2)->target_index) |
| 2500 | return -1; |
| 2501 | else if ((*subspace2)->target_index < (*subspace1)->target_index) |
| 2502 | return 1; |
| 2503 | else |
| 2504 | return 0; |
| 2505 | } |
| 2506 | |
| 2507 | /* Perform various work in preparation for emitting the fixup stream. */ |
| 2508 | |
| 2509 | static void |
| 2510 | som_prep_for_fixups (bfd *abfd, asymbol **syms, unsigned long num_syms) |
| 2511 | { |
| 2512 | unsigned long i; |
| 2513 | asection *section; |
| 2514 | asymbol **sorted_syms; |
| 2515 | bfd_size_type amt; |
| 2516 | |
| 2517 | /* Most SOM relocations involving a symbol have a length which is |
| 2518 | dependent on the index of the symbol. So symbols which are |
| 2519 | used often in relocations should have a small index. */ |
| 2520 | |
| 2521 | /* First initialize the counters for each symbol. */ |
| 2522 | for (i = 0; i < num_syms; i++) |
| 2523 | { |
| 2524 | /* Handle a section symbol; these have no pointers back to the |
| 2525 | SOM symbol info. So we just use the udata field to hold the |
| 2526 | relocation count. */ |
| 2527 | if (som_symbol_data (syms[i]) == NULL |
| 2528 | || syms[i]->flags & BSF_SECTION_SYM) |
| 2529 | { |
| 2530 | syms[i]->flags |= BSF_SECTION_SYM; |
| 2531 | syms[i]->udata.i = 0; |
| 2532 | } |
| 2533 | else |
| 2534 | som_symbol_data (syms[i])->reloc_count = 0; |
| 2535 | } |
| 2536 | |
| 2537 | /* Now that the counters are initialized, make a weighted count |
| 2538 | of how often a given symbol is used in a relocation. */ |
| 2539 | for (section = abfd->sections; section != NULL; section = section->next) |
| 2540 | { |
| 2541 | int j; |
| 2542 | |
| 2543 | /* Does this section have any relocations? */ |
| 2544 | if ((int) section->reloc_count <= 0) |
| 2545 | continue; |
| 2546 | |
| 2547 | /* Walk through each relocation for this section. */ |
| 2548 | for (j = 1; j < (int) section->reloc_count; j++) |
| 2549 | { |
| 2550 | arelent *reloc = section->orelocation[j]; |
| 2551 | int scale; |
| 2552 | |
| 2553 | /* A relocation against a symbol in the *ABS* section really |
| 2554 | does not have a symbol. Likewise if the symbol isn't associated |
| 2555 | with any section. */ |
| 2556 | if (reloc->sym_ptr_ptr == NULL |
| 2557 | || bfd_is_abs_section ((*reloc->sym_ptr_ptr)->section)) |
| 2558 | continue; |
| 2559 | |
| 2560 | /* Scaling to encourage symbols involved in R_DP_RELATIVE |
| 2561 | and R_CODE_ONE_SYMBOL relocations to come first. These |
| 2562 | two relocations have single byte versions if the symbol |
| 2563 | index is very small. */ |
| 2564 | if (reloc->howto->type == R_DP_RELATIVE |
| 2565 | || reloc->howto->type == R_CODE_ONE_SYMBOL) |
| 2566 | scale = 2; |
| 2567 | else |
| 2568 | scale = 1; |
| 2569 | |
| 2570 | /* Handle section symbols by storing the count in the udata |
| 2571 | field. It will not be used and the count is very important |
| 2572 | for these symbols. */ |
| 2573 | if ((*reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM) |
| 2574 | { |
| 2575 | (*reloc->sym_ptr_ptr)->udata.i = |
| 2576 | (*reloc->sym_ptr_ptr)->udata.i + scale; |
| 2577 | continue; |
| 2578 | } |
| 2579 | |
| 2580 | /* A normal symbol. Increment the count. */ |
| 2581 | som_symbol_data (*reloc->sym_ptr_ptr)->reloc_count += scale; |
| 2582 | } |
| 2583 | } |
| 2584 | |
| 2585 | /* Sort a copy of the symbol table, rather than the canonical |
| 2586 | output symbol table. */ |
| 2587 | amt = num_syms; |
| 2588 | amt *= sizeof (asymbol *); |
| 2589 | sorted_syms = bfd_zalloc (abfd, amt); |
| 2590 | memcpy (sorted_syms, syms, num_syms * sizeof (asymbol *)); |
| 2591 | qsort (sorted_syms, num_syms, sizeof (asymbol *), compare_syms); |
| 2592 | obj_som_sorted_syms (abfd) = sorted_syms; |
| 2593 | |
| 2594 | /* Compute the symbol indexes, they will be needed by the relocation |
| 2595 | code. */ |
| 2596 | for (i = 0; i < num_syms; i++) |
| 2597 | { |
| 2598 | /* A section symbol. Again, there is no pointer to backend symbol |
| 2599 | information, so we reuse the udata field again. */ |
| 2600 | if (sorted_syms[i]->flags & BSF_SECTION_SYM) |
| 2601 | sorted_syms[i]->udata.i = i; |
| 2602 | else |
| 2603 | som_symbol_data (sorted_syms[i])->index = i; |
| 2604 | } |
| 2605 | } |
| 2606 | |
| 2607 | static bfd_boolean |
| 2608 | som_write_fixups (bfd *abfd, |
| 2609 | unsigned long current_offset, |
| 2610 | unsigned int *total_reloc_sizep) |
| 2611 | { |
| 2612 | unsigned int i, j; |
| 2613 | /* Chunk of memory that we can use as buffer space, then throw |
| 2614 | away. */ |
| 2615 | unsigned char tmp_space[SOM_TMP_BUFSIZE]; |
| 2616 | unsigned char *p; |
| 2617 | unsigned int total_reloc_size = 0; |
| 2618 | unsigned int subspace_reloc_size = 0; |
| 2619 | unsigned int num_spaces = obj_som_file_hdr (abfd)->space_total; |
| 2620 | asection *section = abfd->sections; |
| 2621 | bfd_size_type amt; |
| 2622 | |
| 2623 | memset (tmp_space, 0, SOM_TMP_BUFSIZE); |
| 2624 | p = tmp_space; |
| 2625 | |
| 2626 | /* All the fixups for a particular subspace are emitted in a single |
| 2627 | stream. All the subspaces for a particular space are emitted |
| 2628 | as a single stream. |
| 2629 | |
| 2630 | So, to get all the locations correct one must iterate through all the |
| 2631 | spaces, for each space iterate through its subspaces and output a |
| 2632 | fixups stream. */ |
| 2633 | for (i = 0; i < num_spaces; i++) |
| 2634 | { |
| 2635 | asection *subsection; |
| 2636 | |
| 2637 | /* Find a space. */ |
| 2638 | while (!som_is_space (section)) |
| 2639 | section = section->next; |
| 2640 | |
| 2641 | /* Now iterate through each of its subspaces. */ |
| 2642 | for (subsection = abfd->sections; |
| 2643 | subsection != NULL; |
| 2644 | subsection = subsection->next) |
| 2645 | { |
| 2646 | int reloc_offset; |
| 2647 | unsigned int current_rounding_mode; |
| 2648 | #ifndef NO_PCREL_MODES |
| 2649 | unsigned int current_call_mode; |
| 2650 | #endif |
| 2651 | |
| 2652 | /* Find a subspace of this space. */ |
| 2653 | if (!som_is_subspace (subsection) |
| 2654 | || !som_is_container (section, subsection)) |
| 2655 | continue; |
| 2656 | |
| 2657 | /* If this subspace does not have real data, then we are |
| 2658 | finished with it. */ |
| 2659 | if ((subsection->flags & SEC_HAS_CONTENTS) == 0) |
| 2660 | { |
| 2661 | som_section_data (subsection)->subspace_dict->fixup_request_index |
| 2662 | = -1; |
| 2663 | continue; |
| 2664 | } |
| 2665 | |
| 2666 | /* This subspace has some relocations. Put the relocation stream |
| 2667 | index into the subspace record. */ |
| 2668 | som_section_data (subsection)->subspace_dict->fixup_request_index |
| 2669 | = total_reloc_size; |
| 2670 | |
| 2671 | /* To make life easier start over with a clean slate for |
| 2672 | each subspace. Seek to the start of the relocation stream |
| 2673 | for this subspace in preparation for writing out its fixup |
| 2674 | stream. */ |
| 2675 | if (bfd_seek (abfd, current_offset + total_reloc_size, SEEK_SET) != 0) |
| 2676 | return FALSE; |
| 2677 | |
| 2678 | /* Buffer space has already been allocated. Just perform some |
| 2679 | initialization here. */ |
| 2680 | p = tmp_space; |
| 2681 | subspace_reloc_size = 0; |
| 2682 | reloc_offset = 0; |
| 2683 | som_initialize_reloc_queue (reloc_queue); |
| 2684 | current_rounding_mode = R_N_MODE; |
| 2685 | #ifndef NO_PCREL_MODES |
| 2686 | current_call_mode = R_SHORT_PCREL_MODE; |
| 2687 | #endif |
| 2688 | |
| 2689 | /* Translate each BFD relocation into one or more SOM |
| 2690 | relocations. */ |
| 2691 | for (j = 0; j < subsection->reloc_count; j++) |
| 2692 | { |
| 2693 | arelent *bfd_reloc = subsection->orelocation[j]; |
| 2694 | unsigned int skip; |
| 2695 | int sym_num; |
| 2696 | |
| 2697 | /* Get the symbol number. Remember it's stored in a |
| 2698 | special place for section symbols. */ |
| 2699 | if ((*bfd_reloc->sym_ptr_ptr)->flags & BSF_SECTION_SYM) |
| 2700 | sym_num = (*bfd_reloc->sym_ptr_ptr)->udata.i; |
| 2701 | else |
| 2702 | sym_num = som_symbol_data (*bfd_reloc->sym_ptr_ptr)->index; |
| 2703 | |
| 2704 | /* If there is not enough room for the next couple relocations, |
| 2705 | then dump the current buffer contents now. Also reinitialize |
| 2706 | the relocation queue. |
| 2707 | |
| 2708 | No single BFD relocation could ever translate into more |
| 2709 | than 100 bytes of SOM relocations (20bytes is probably the |
| 2710 | upper limit, but leave lots of space for growth). */ |
| 2711 | if (p - tmp_space + 100 > SOM_TMP_BUFSIZE) |
| 2712 | { |
| 2713 | amt = p - tmp_space; |
| 2714 | if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt) |
| 2715 | return FALSE; |
| 2716 | |
| 2717 | p = tmp_space; |
| 2718 | som_initialize_reloc_queue (reloc_queue); |
| 2719 | } |
| 2720 | |
| 2721 | /* Emit R_NO_RELOCATION fixups to map any bytes which were |
| 2722 | skipped. */ |
| 2723 | skip = bfd_reloc->address - reloc_offset; |
| 2724 | p = som_reloc_skip (abfd, skip, p, |
| 2725 | &subspace_reloc_size, reloc_queue); |
| 2726 | |
| 2727 | /* Update reloc_offset for the next iteration. |
| 2728 | |
| 2729 | Many relocations do not consume input bytes. They |
| 2730 | are markers, or set state necessary to perform some |
| 2731 | later relocation. */ |
| 2732 | switch (bfd_reloc->howto->type) |
| 2733 | { |
| 2734 | case R_ENTRY: |
| 2735 | case R_ALT_ENTRY: |
| 2736 | case R_EXIT: |
| 2737 | case R_N_MODE: |
| 2738 | case R_S_MODE: |
| 2739 | case R_D_MODE: |
| 2740 | case R_R_MODE: |
| 2741 | case R_FSEL: |
| 2742 | case R_LSEL: |
| 2743 | case R_RSEL: |
| 2744 | case R_COMP1: |
| 2745 | case R_COMP2: |
| 2746 | case R_BEGIN_BRTAB: |
| 2747 | case R_END_BRTAB: |
| 2748 | case R_BEGIN_TRY: |
| 2749 | case R_END_TRY: |
| 2750 | case R_N0SEL: |
| 2751 | case R_N1SEL: |
| 2752 | #ifndef NO_PCREL_MODES |
| 2753 | case R_SHORT_PCREL_MODE: |
| 2754 | case R_LONG_PCREL_MODE: |
| 2755 | #endif |
| 2756 | reloc_offset = bfd_reloc->address; |
| 2757 | break; |
| 2758 | |
| 2759 | default: |
| 2760 | reloc_offset = bfd_reloc->address + 4; |
| 2761 | break; |
| 2762 | } |
| 2763 | |
| 2764 | /* Now the actual relocation we care about. */ |
| 2765 | switch (bfd_reloc->howto->type) |
| 2766 | { |
| 2767 | case R_PCREL_CALL: |
| 2768 | case R_ABS_CALL: |
| 2769 | p = som_reloc_call (abfd, p, &subspace_reloc_size, |
| 2770 | bfd_reloc, sym_num, reloc_queue); |
| 2771 | break; |
| 2772 | |
| 2773 | case R_CODE_ONE_SYMBOL: |
| 2774 | case R_DP_RELATIVE: |
| 2775 | /* Account for any addend. */ |
| 2776 | if (bfd_reloc->addend) |
| 2777 | p = som_reloc_addend (abfd, bfd_reloc->addend, p, |
| 2778 | &subspace_reloc_size, reloc_queue); |
| 2779 | |
| 2780 | if (sym_num < 0x20) |
| 2781 | { |
| 2782 | bfd_put_8 (abfd, bfd_reloc->howto->type + sym_num, p); |
| 2783 | subspace_reloc_size += 1; |
| 2784 | p += 1; |
| 2785 | } |
| 2786 | else if (sym_num < 0x100) |
| 2787 | { |
| 2788 | bfd_put_8 (abfd, bfd_reloc->howto->type + 32, p); |
| 2789 | bfd_put_8 (abfd, sym_num, p + 1); |
| 2790 | p = try_prev_fixup (abfd, &subspace_reloc_size, p, |
| 2791 | 2, reloc_queue); |
| 2792 | } |
| 2793 | else if (sym_num < 0x10000000) |
| 2794 | { |
| 2795 | bfd_put_8 (abfd, bfd_reloc->howto->type + 33, p); |
| 2796 | bfd_put_8 (abfd, sym_num >> 16, p + 1); |
| 2797 | bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); |
| 2798 | p = try_prev_fixup (abfd, &subspace_reloc_size, |
| 2799 | p, 4, reloc_queue); |
| 2800 | } |
| 2801 | else |
| 2802 | abort (); |
| 2803 | break; |
| 2804 | |
| 2805 | case R_DATA_GPREL: |
| 2806 | /* Account for any addend. */ |
| 2807 | if (bfd_reloc->addend) |
| 2808 | p = som_reloc_addend (abfd, bfd_reloc->addend, p, |
| 2809 | &subspace_reloc_size, reloc_queue); |
| 2810 | |
| 2811 | if (sym_num < 0x10000000) |
| 2812 | { |
| 2813 | bfd_put_8 (abfd, bfd_reloc->howto->type, p); |
| 2814 | bfd_put_8 (abfd, sym_num >> 16, p + 1); |
| 2815 | bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); |
| 2816 | p = try_prev_fixup (abfd, &subspace_reloc_size, |
| 2817 | p, 4, reloc_queue); |
| 2818 | } |
| 2819 | else |
| 2820 | abort (); |
| 2821 | break; |
| 2822 | |
| 2823 | case R_DATA_ONE_SYMBOL: |
| 2824 | case R_DATA_PLABEL: |
| 2825 | case R_CODE_PLABEL: |
| 2826 | case R_DLT_REL: |
| 2827 | /* Account for any addend using R_DATA_OVERRIDE. */ |
| 2828 | if (bfd_reloc->howto->type != R_DATA_ONE_SYMBOL |
| 2829 | && bfd_reloc->addend) |
| 2830 | p = som_reloc_addend (abfd, bfd_reloc->addend, p, |
| 2831 | &subspace_reloc_size, reloc_queue); |
| 2832 | |
| 2833 | if (sym_num < 0x100) |
| 2834 | { |
| 2835 | bfd_put_8 (abfd, bfd_reloc->howto->type, p); |
| 2836 | bfd_put_8 (abfd, sym_num, p + 1); |
| 2837 | p = try_prev_fixup (abfd, &subspace_reloc_size, p, |
| 2838 | 2, reloc_queue); |
| 2839 | } |
| 2840 | else if (sym_num < 0x10000000) |
| 2841 | { |
| 2842 | bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p); |
| 2843 | bfd_put_8 (abfd, sym_num >> 16, p + 1); |
| 2844 | bfd_put_16 (abfd, (bfd_vma) sym_num, p + 2); |
| 2845 | p = try_prev_fixup (abfd, &subspace_reloc_size, |
| 2846 | p, 4, reloc_queue); |
| 2847 | } |
| 2848 | else |
| 2849 | abort (); |
| 2850 | break; |
| 2851 | |
| 2852 | case R_ENTRY: |
| 2853 | { |
| 2854 | unsigned int tmp; |
| 2855 | arelent *tmp_reloc = NULL; |
| 2856 | bfd_put_8 (abfd, R_ENTRY, p); |
| 2857 | |
| 2858 | /* R_ENTRY relocations have 64 bits of associated |
| 2859 | data. Unfortunately the addend field of a bfd |
| 2860 | relocation is only 32 bits. So, we split up |
| 2861 | the 64bit unwind information and store part in |
| 2862 | the R_ENTRY relocation, and the rest in the R_EXIT |
| 2863 | relocation. */ |
| 2864 | bfd_put_32 (abfd, bfd_reloc->addend, p + 1); |
| 2865 | |
| 2866 | /* Find the next R_EXIT relocation. */ |
| 2867 | for (tmp = j; tmp < subsection->reloc_count; tmp++) |
| 2868 | { |
| 2869 | tmp_reloc = subsection->orelocation[tmp]; |
| 2870 | if (tmp_reloc->howto->type == R_EXIT) |
| 2871 | break; |
| 2872 | } |
| 2873 | |
| 2874 | if (tmp == subsection->reloc_count) |
| 2875 | abort (); |
| 2876 | |
| 2877 | bfd_put_32 (abfd, tmp_reloc->addend, p + 5); |
| 2878 | p = try_prev_fixup (abfd, &subspace_reloc_size, |
| 2879 | p, 9, reloc_queue); |
| 2880 | break; |
| 2881 | } |
| 2882 | |
| 2883 | case R_N_MODE: |
| 2884 | case R_S_MODE: |
| 2885 | case R_D_MODE: |
| 2886 | case R_R_MODE: |
| 2887 | /* If this relocation requests the current rounding |
| 2888 | mode, then it is redundant. */ |
| 2889 | if (bfd_reloc->howto->type != current_rounding_mode) |
| 2890 | { |
| 2891 | bfd_put_8 (abfd, bfd_reloc->howto->type, p); |
| 2892 | subspace_reloc_size += 1; |
| 2893 | p += 1; |
| 2894 | current_rounding_mode = bfd_reloc->howto->type; |
| 2895 | } |
| 2896 | break; |
| 2897 | |
| 2898 | #ifndef NO_PCREL_MODES |
| 2899 | case R_LONG_PCREL_MODE: |
| 2900 | case R_SHORT_PCREL_MODE: |
| 2901 | if (bfd_reloc->howto->type != current_call_mode) |
| 2902 | { |
| 2903 | bfd_put_8 (abfd, bfd_reloc->howto->type, p); |
| 2904 | subspace_reloc_size += 1; |
| 2905 | p += 1; |
| 2906 | current_call_mode = bfd_reloc->howto->type; |
| 2907 | } |
| 2908 | break; |
| 2909 | #endif |
| 2910 | |
| 2911 | case R_EXIT: |
| 2912 | case R_ALT_ENTRY: |
| 2913 | case R_FSEL: |
| 2914 | case R_LSEL: |
| 2915 | case R_RSEL: |
| 2916 | case R_BEGIN_BRTAB: |
| 2917 | case R_END_BRTAB: |
| 2918 | case R_BEGIN_TRY: |
| 2919 | case R_N0SEL: |
| 2920 | case R_N1SEL: |
| 2921 | bfd_put_8 (abfd, bfd_reloc->howto->type, p); |
| 2922 | subspace_reloc_size += 1; |
| 2923 | p += 1; |
| 2924 | break; |
| 2925 | |
| 2926 | case R_END_TRY: |
| 2927 | /* The end of an exception handling region. The reloc's |
| 2928 | addend contains the offset of the exception handling |
| 2929 | code. */ |
| 2930 | if (bfd_reloc->addend == 0) |
| 2931 | bfd_put_8 (abfd, bfd_reloc->howto->type, p); |
| 2932 | else if (bfd_reloc->addend < 1024) |
| 2933 | { |
| 2934 | bfd_put_8 (abfd, bfd_reloc->howto->type + 1, p); |
| 2935 | bfd_put_8 (abfd, bfd_reloc->addend / 4, p + 1); |
| 2936 | p = try_prev_fixup (abfd, &subspace_reloc_size, |
| 2937 | p, 2, reloc_queue); |
| 2938 | } |
| 2939 | else |
| 2940 | { |
| 2941 | bfd_put_8 (abfd, bfd_reloc->howto->type + 2, p); |
| 2942 | bfd_put_8 (abfd, (bfd_reloc->addend / 4) >> 16, p + 1); |
| 2943 | bfd_put_16 (abfd, bfd_reloc->addend / 4, p + 2); |
| 2944 | p = try_prev_fixup (abfd, &subspace_reloc_size, |
| 2945 | p, 4, reloc_queue); |
| 2946 | } |
| 2947 | break; |
| 2948 | |
| 2949 | case R_COMP1: |
| 2950 | /* The only time we generate R_COMP1, R_COMP2 and |
| 2951 | R_CODE_EXPR relocs is for the difference of two |
| 2952 | symbols. Hence we can cheat here. */ |
| 2953 | bfd_put_8 (abfd, bfd_reloc->howto->type, p); |
| 2954 | bfd_put_8 (abfd, 0x44, p + 1); |
| 2955 | p = try_prev_fixup (abfd, &subspace_reloc_size, |
| 2956 | p, 2, reloc_queue); |
| 2957 | break; |
| 2958 | |
| 2959 | case R_COMP2: |
| 2960 | /* The only time we generate R_COMP1, R_COMP2 and |
| 2961 | R_CODE_EXPR relocs is for the difference of two |
| 2962 | symbols. Hence we can cheat here. */ |
| 2963 | bfd_put_8 (abfd, bfd_reloc->howto->type, p); |
| 2964 | bfd_put_8 (abfd, 0x80, p + 1); |
| 2965 | bfd_put_8 (abfd, sym_num >> 16, p + 2); |
| 2966 | bfd_put_16 (abfd, (bfd_vma) sym_num, p + 3); |
| 2967 | p = try_prev_fixup (abfd, &subspace_reloc_size, |
| 2968 | p, 5, reloc_queue); |
| 2969 | break; |
| 2970 | |
| 2971 | case R_CODE_EXPR: |
| 2972 | case R_DATA_EXPR: |
| 2973 | /* The only time we generate R_COMP1, R_COMP2 and |
| 2974 | R_CODE_EXPR relocs is for the difference of two |
| 2975 | symbols. Hence we can cheat here. */ |
| 2976 | bfd_put_8 (abfd, bfd_reloc->howto->type, p); |
| 2977 | subspace_reloc_size += 1; |
| 2978 | p += 1; |
| 2979 | break; |
| 2980 | |
| 2981 | /* Put a "R_RESERVED" relocation in the stream if |
| 2982 | we hit something we do not understand. The linker |
| 2983 | will complain loudly if this ever happens. */ |
| 2984 | default: |
| 2985 | bfd_put_8 (abfd, 0xff, p); |
| 2986 | subspace_reloc_size += 1; |
| 2987 | p += 1; |
| 2988 | break; |
| 2989 | } |
| 2990 | } |
| 2991 | |
| 2992 | /* Last BFD relocation for a subspace has been processed. |
| 2993 | Map the rest of the subspace with R_NO_RELOCATION fixups. */ |
| 2994 | p = som_reloc_skip (abfd, subsection->size - reloc_offset, |
| 2995 | p, &subspace_reloc_size, reloc_queue); |
| 2996 | |
| 2997 | /* Scribble out the relocations. */ |
| 2998 | amt = p - tmp_space; |
| 2999 | if (bfd_bwrite ((void *) tmp_space, amt, abfd) != amt) |
| 3000 | return FALSE; |
| 3001 | p = tmp_space; |
| 3002 | |
| 3003 | total_reloc_size += subspace_reloc_size; |
| 3004 | som_section_data (subsection)->subspace_dict->fixup_request_quantity |
| 3005 | = subspace_reloc_size; |
| 3006 | } |
| 3007 | section = section->next; |
| 3008 | } |
| 3009 | *total_reloc_sizep = total_reloc_size; |
| 3010 | return TRUE; |
| 3011 | } |
| 3012 | |
| 3013 | /* Write out the space/subspace string table. */ |
| 3014 | |
| 3015 | static bfd_boolean |
| 3016 | som_write_space_strings (bfd *abfd, |
| 3017 | unsigned long current_offset, |
| 3018 | unsigned int *string_sizep) |
| 3019 | { |
| 3020 | /* Chunk of memory that we can use as buffer space, then throw |
| 3021 | away. */ |
| 3022 | size_t tmp_space_size = SOM_TMP_BUFSIZE; |
| 3023 | char *tmp_space = alloca (tmp_space_size); |
| 3024 | char *p = tmp_space; |
| 3025 | unsigned int strings_size = 0; |
| 3026 | asection *section; |
| 3027 | bfd_size_type amt; |
| 3028 | |
| 3029 | /* Seek to the start of the space strings in preparation for writing |
| 3030 | them out. */ |
| 3031 | if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) |
| 3032 | return FALSE; |
| 3033 | |
| 3034 | /* Walk through all the spaces and subspaces (order is not important) |
| 3035 | building up and writing string table entries for their names. */ |
| 3036 | for (section = abfd->sections; section != NULL; section = section->next) |
| 3037 | { |
| 3038 | size_t length; |
| 3039 | |
| 3040 | /* Only work with space/subspaces; avoid any other sections |
| 3041 | which might have been made (.text for example). */ |
| 3042 | if (!som_is_space (section) && !som_is_subspace (section)) |
| 3043 | continue; |
| 3044 | |
| 3045 | /* Get the length of the space/subspace name. */ |
| 3046 | length = strlen (section->name); |
| 3047 | |
| 3048 | /* If there is not enough room for the next entry, then dump the |
| 3049 | current buffer contents now and maybe allocate a larger |
| 3050 | buffer. Each entry will take 4 bytes to hold the string |
| 3051 | length + the string itself + null terminator. */ |
| 3052 | if (p - tmp_space + 5 + length > tmp_space_size) |
| 3053 | { |
| 3054 | /* Flush buffer before refilling or reallocating. */ |
| 3055 | amt = p - tmp_space; |
| 3056 | if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt) |
| 3057 | return FALSE; |
| 3058 | |
| 3059 | /* Reallocate if now empty buffer still too small. */ |
| 3060 | if (5 + length > tmp_space_size) |
| 3061 | { |
| 3062 | /* Ensure a minimum growth factor to avoid O(n**2) space |
| 3063 | consumption for n strings. The optimal minimum |
| 3064 | factor seems to be 2, as no other value can guarantee |
| 3065 | wasting less than 50% space. (Note that we cannot |
| 3066 | deallocate space allocated by `alloca' without |
| 3067 | returning from this function.) The same technique is |
| 3068 | used a few more times below when a buffer is |
| 3069 | reallocated. */ |
| 3070 | tmp_space_size = MAX (2 * tmp_space_size, 5 + length); |
| 3071 | tmp_space = alloca (tmp_space_size); |
| 3072 | } |
| 3073 | |
| 3074 | /* Reset to beginning of the (possibly new) buffer space. */ |
| 3075 | p = tmp_space; |
| 3076 | } |
| 3077 | |
| 3078 | /* First element in a string table entry is the length of the |
| 3079 | string. Alignment issues are already handled. */ |
| 3080 | bfd_put_32 (abfd, (bfd_vma) length, p); |
| 3081 | p += 4; |
| 3082 | strings_size += 4; |
| 3083 | |
| 3084 | /* Record the index in the space/subspace records. */ |
| 3085 | if (som_is_space (section)) |
| 3086 | som_section_data (section)->space_dict->name.n_strx = strings_size; |
| 3087 | else |
| 3088 | som_section_data (section)->subspace_dict->name.n_strx = strings_size; |
| 3089 | |
| 3090 | /* Next comes the string itself + a null terminator. */ |
| 3091 | strcpy (p, section->name); |
| 3092 | p += length + 1; |
| 3093 | strings_size += length + 1; |
| 3094 | |
| 3095 | /* Always align up to the next word boundary. */ |
| 3096 | while (strings_size % 4) |
| 3097 | { |
| 3098 | bfd_put_8 (abfd, 0, p); |
| 3099 | p++; |
| 3100 | strings_size++; |
| 3101 | } |
| 3102 | } |
| 3103 | |
| 3104 | /* Done with the space/subspace strings. Write out any information |
| 3105 | contained in a partial block. */ |
| 3106 | amt = p - tmp_space; |
| 3107 | if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt) |
| 3108 | return FALSE; |
| 3109 | *string_sizep = strings_size; |
| 3110 | return TRUE; |
| 3111 | } |
| 3112 | |
| 3113 | /* Write out the symbol string table. */ |
| 3114 | |
| 3115 | static bfd_boolean |
| 3116 | som_write_symbol_strings (bfd *abfd, |
| 3117 | unsigned long current_offset, |
| 3118 | asymbol **syms, |
| 3119 | unsigned int num_syms, |
| 3120 | unsigned int *string_sizep, |
| 3121 | COMPUNIT *compilation_unit) |
| 3122 | { |
| 3123 | unsigned int i; |
| 3124 | |
| 3125 | /* Chunk of memory that we can use as buffer space, then throw |
| 3126 | away. */ |
| 3127 | size_t tmp_space_size = SOM_TMP_BUFSIZE; |
| 3128 | char *tmp_space = alloca (tmp_space_size); |
| 3129 | char *p = tmp_space; |
| 3130 | |
| 3131 | unsigned int strings_size = 0; |
| 3132 | char *comp[4]; |
| 3133 | bfd_size_type amt; |
| 3134 | |
| 3135 | /* This gets a bit gruesome because of the compilation unit. The |
| 3136 | strings within the compilation unit are part of the symbol |
| 3137 | strings, but don't have symbol_dictionary entries. So, manually |
| 3138 | write them and update the compilation unit header. On input, the |
| 3139 | compilation unit header contains local copies of the strings. |
| 3140 | Move them aside. */ |
| 3141 | if (compilation_unit) |
| 3142 | { |
| 3143 | comp[0] = compilation_unit->name.n_name; |
| 3144 | comp[1] = compilation_unit->language_name.n_name; |
| 3145 | comp[2] = compilation_unit->product_id.n_name; |
| 3146 | comp[3] = compilation_unit->version_id.n_name; |
| 3147 | } |
| 3148 | |
| 3149 | /* Seek to the start of the space strings in preparation for writing |
| 3150 | them out. */ |
| 3151 | if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) |
| 3152 | return FALSE; |
| 3153 | |
| 3154 | if (compilation_unit) |
| 3155 | { |
| 3156 | for (i = 0; i < 4; i++) |
| 3157 | { |
| 3158 | size_t length = strlen (comp[i]); |
| 3159 | |
| 3160 | /* If there is not enough room for the next entry, then dump |
| 3161 | the current buffer contents now and maybe allocate a |
| 3162 | larger buffer. */ |
| 3163 | if (p - tmp_space + 5 + length > tmp_space_size) |
| 3164 | { |
| 3165 | /* Flush buffer before refilling or reallocating. */ |
| 3166 | amt = p - tmp_space; |
| 3167 | if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt) |
| 3168 | return FALSE; |
| 3169 | |
| 3170 | /* Reallocate if now empty buffer still too small. */ |
| 3171 | if (5 + length > tmp_space_size) |
| 3172 | { |
| 3173 | /* See alloca above for discussion of new size. */ |
| 3174 | tmp_space_size = MAX (2 * tmp_space_size, 5 + length); |
| 3175 | tmp_space = alloca (tmp_space_size); |
| 3176 | } |
| 3177 | |
| 3178 | /* Reset to beginning of the (possibly new) buffer |
| 3179 | space. */ |
| 3180 | p = tmp_space; |
| 3181 | } |
| 3182 | |
| 3183 | /* First element in a string table entry is the length of |
| 3184 | the string. This must always be 4 byte aligned. This is |
| 3185 | also an appropriate time to fill in the string index |
| 3186 | field in the symbol table entry. */ |
| 3187 | bfd_put_32 (abfd, (bfd_vma) length, p); |
| 3188 | strings_size += 4; |
| 3189 | p += 4; |
| 3190 | |
| 3191 | /* Next comes the string itself + a null terminator. */ |
| 3192 | strcpy (p, comp[i]); |
| 3193 | |
| 3194 | switch (i) |
| 3195 | { |
| 3196 | case 0: |
| 3197 | obj_som_compilation_unit (abfd)->name.n_strx = strings_size; |
| 3198 | break; |
| 3199 | case 1: |
| 3200 | obj_som_compilation_unit (abfd)->language_name.n_strx = |
| 3201 | strings_size; |
| 3202 | break; |
| 3203 | case 2: |
| 3204 | obj_som_compilation_unit (abfd)->product_id.n_strx = |
| 3205 | strings_size; |
| 3206 | break; |
| 3207 | case 3: |
| 3208 | obj_som_compilation_unit (abfd)->version_id.n_strx = |
| 3209 | strings_size; |
| 3210 | break; |
| 3211 | } |
| 3212 | |
| 3213 | p += length + 1; |
| 3214 | strings_size += length + 1; |
| 3215 | |
| 3216 | /* Always align up to the next word boundary. */ |
| 3217 | while (strings_size % 4) |
| 3218 | { |
| 3219 | bfd_put_8 (abfd, 0, p); |
| 3220 | strings_size++; |
| 3221 | p++; |
| 3222 | } |
| 3223 | } |
| 3224 | } |
| 3225 | |
| 3226 | for (i = 0; i < num_syms; i++) |
| 3227 | { |
| 3228 | size_t length = strlen (syms[i]->name); |
| 3229 | |
| 3230 | /* If there is not enough room for the next entry, then dump the |
| 3231 | current buffer contents now and maybe allocate a larger buffer. */ |
| 3232 | if (p - tmp_space + 5 + length > tmp_space_size) |
| 3233 | { |
| 3234 | /* Flush buffer before refilling or reallocating. */ |
| 3235 | amt = p - tmp_space; |
| 3236 | if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt) |
| 3237 | return FALSE; |
| 3238 | |
| 3239 | /* Reallocate if now empty buffer still too small. */ |
| 3240 | if (5 + length > tmp_space_size) |
| 3241 | { |
| 3242 | /* See alloca above for discussion of new size. */ |
| 3243 | tmp_space_size = MAX (2 * tmp_space_size, 5 + length); |
| 3244 | tmp_space = alloca (tmp_space_size); |
| 3245 | } |
| 3246 | |
| 3247 | /* Reset to beginning of the (possibly new) buffer space. */ |
| 3248 | p = tmp_space; |
| 3249 | } |
| 3250 | |
| 3251 | /* First element in a string table entry is the length of the |
| 3252 | string. This must always be 4 byte aligned. This is also |
| 3253 | an appropriate time to fill in the string index field in the |
| 3254 | symbol table entry. */ |
| 3255 | bfd_put_32 (abfd, (bfd_vma) length, p); |
| 3256 | strings_size += 4; |
| 3257 | p += 4; |
| 3258 | |
| 3259 | /* Next comes the string itself + a null terminator. */ |
| 3260 | strcpy (p, syms[i]->name); |
| 3261 | |
| 3262 | som_symbol_data (syms[i])->stringtab_offset = strings_size; |
| 3263 | p += length + 1; |
| 3264 | strings_size += length + 1; |
| 3265 | |
| 3266 | /* Always align up to the next word boundary. */ |
| 3267 | while (strings_size % 4) |
| 3268 | { |
| 3269 | bfd_put_8 (abfd, 0, p); |
| 3270 | strings_size++; |
| 3271 | p++; |
| 3272 | } |
| 3273 | } |
| 3274 | |
| 3275 | /* Scribble out any partial block. */ |
| 3276 | amt = p - tmp_space; |
| 3277 | if (bfd_bwrite ((void *) &tmp_space[0], amt, abfd) != amt) |
| 3278 | return FALSE; |
| 3279 | |
| 3280 | *string_sizep = strings_size; |
| 3281 | return TRUE; |
| 3282 | } |
| 3283 | |
| 3284 | /* Compute variable information to be placed in the SOM headers, |
| 3285 | space/subspace dictionaries, relocation streams, etc. Begin |
| 3286 | writing parts of the object file. */ |
| 3287 | |
| 3288 | static bfd_boolean |
| 3289 | som_begin_writing (bfd *abfd) |
| 3290 | { |
| 3291 | unsigned long current_offset = 0; |
| 3292 | unsigned int strings_size = 0; |
| 3293 | unsigned long num_spaces, num_subspaces, i; |
| 3294 | asection *section; |
| 3295 | unsigned int total_subspaces = 0; |
| 3296 | struct som_exec_auxhdr *exec_header = NULL; |
| 3297 | |
| 3298 | /* The file header will always be first in an object file, |
| 3299 | everything else can be in random locations. To keep things |
| 3300 | "simple" BFD will lay out the object file in the manner suggested |
| 3301 | by the PRO ABI for PA-RISC Systems. */ |
| 3302 | |
| 3303 | /* Before any output can really begin offsets for all the major |
| 3304 | portions of the object file must be computed. So, starting |
| 3305 | with the initial file header compute (and sometimes write) |
| 3306 | each portion of the object file. */ |
| 3307 | |
| 3308 | /* Make room for the file header, it's contents are not complete |
| 3309 | yet, so it can not be written at this time. */ |
| 3310 | current_offset += sizeof (struct header); |
| 3311 | |
| 3312 | /* Any auxiliary headers will follow the file header. Right now |
| 3313 | we support only the copyright and version headers. */ |
| 3314 | obj_som_file_hdr (abfd)->aux_header_location = current_offset; |
| 3315 | obj_som_file_hdr (abfd)->aux_header_size = 0; |
| 3316 | if (abfd->flags & (EXEC_P | DYNAMIC)) |
| 3317 | { |
| 3318 | /* Parts of the exec header will be filled in later, so |
| 3319 | delay writing the header itself. Fill in the defaults, |
| 3320 | and write it later. */ |
| 3321 | current_offset += sizeof (struct som_exec_auxhdr); |
| 3322 | obj_som_file_hdr (abfd)->aux_header_size |
| 3323 | += sizeof (struct som_exec_auxhdr); |
| 3324 | exec_header = obj_som_exec_hdr (abfd); |
| 3325 | exec_header->som_auxhdr.type = EXEC_AUX_ID; |
| 3326 | exec_header->som_auxhdr.length = 40; |
| 3327 | } |
| 3328 | if (obj_som_version_hdr (abfd) != NULL) |
| 3329 | { |
| 3330 | bfd_size_type len; |
| 3331 | |
| 3332 | if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) |
| 3333 | return FALSE; |
| 3334 | |
| 3335 | /* Write the aux_id structure and the string length. */ |
| 3336 | len = sizeof (struct aux_id) + sizeof (unsigned int); |
| 3337 | obj_som_file_hdr (abfd)->aux_header_size += len; |
| 3338 | current_offset += len; |
| 3339 | if (bfd_bwrite ((void *) obj_som_version_hdr (abfd), len, abfd) != len) |
| 3340 | return FALSE; |
| 3341 | |
| 3342 | /* Write the version string. */ |
| 3343 | len = obj_som_version_hdr (abfd)->header_id.length - sizeof (int); |
| 3344 | obj_som_file_hdr (abfd)->aux_header_size += len; |
| 3345 | current_offset += len; |
| 3346 | if (bfd_bwrite ((void *) obj_som_version_hdr (abfd)->user_string, len, abfd) |
| 3347 | != len) |
| 3348 | return FALSE; |
| 3349 | } |
| 3350 | |
| 3351 | if (obj_som_copyright_hdr (abfd) != NULL) |
| 3352 | { |
| 3353 | bfd_size_type len; |
| 3354 | |
| 3355 | if (bfd_seek (abfd, (file_ptr) current_offset, SEEK_SET) != 0) |
| 3356 | return FALSE; |
| 3357 | |
| 3358 | /* Write the aux_id structure and the string length. */ |
| 3359 | len = sizeof (struct aux_id) + sizeof (unsigned int); |
| 3360 | obj_som_file_hdr (abfd)->aux_header_size += len; |
| 3361 | current_offset += len; |
| 3362 | if (bfd_bwrite ((void *) obj_som_copyright_hdr (abfd), len, abfd) != len) |
| 3363 | return FALSE; |
| 3364 | |
| 3365 | /* Write the copyright string. */ |
| 3366 | len = obj_som_copyright_hdr (abfd)->header_id.length - sizeof (int); |
| 3367 | obj_som_file_hdr (abfd)->aux_header_size += len; |
| 3368 | current_offset += len; |
| 3369 | if (bfd_bwrite ((void *) obj_som_copyright_hdr (abfd)->copyright, len, abfd) |
| 3370 | != len) |
| 3371 | return FALSE; |
| 3372 | } |
| 3373 | |
| 3374 | /* Next comes the initialization pointers; we have no initialization |
| 3375 | pointers, so current offset does not change. */ |
| 3376 | obj_som_file_hdr (abfd)->init_array_location = current_offset; |
| 3377 | obj_som_file_hdr (abfd)->init_array_total = 0; |
| 3378 | |
| 3379 | /* Next are the space records. These are fixed length records. |
| 3380 | |
| 3381 | Count the number of spaces to determine how much room is needed |
| 3382 | in the object file for the space records. |
| 3383 | |
| 3384 | The names of the spaces are stored in a separate string table, |
| 3385 | and the index for each space into the string table is computed |
| 3386 | below. Therefore, it is not possible to write the space headers |
| 3387 | at this time. */ |
| 3388 | num_spaces = som_count_spaces (abfd); |
| 3389 | obj_som_file_hdr (abfd)->space_location = current_offset; |
| 3390 | obj_som_file_hdr (abfd)->space_total = num_spaces; |
| 3391 | current_offset += num_spaces * sizeof (struct space_dictionary_record); |
| 3392 | |
| 3393 | /* Next are the subspace records. These are fixed length records. |
| 3394 | |
| 3395 | Count the number of subspaes to determine how much room is needed |
| 3396 | in the object file for the subspace records. |
| 3397 | |
| 3398 | A variety if fields in the subspace record are still unknown at |
| 3399 | this time (index into string table, fixup stream location/size, etc). */ |
| 3400 | num_subspaces = som_count_subspaces (abfd); |
| 3401 | obj_som_file_hdr (abfd)->subspace_location = current_offset; |
| 3402 | obj_som_file_hdr (abfd)->subspace_total = num_subspaces; |
| 3403 | current_offset |
| 3404 | += num_subspaces * sizeof (struct som_subspace_dictionary_record); |
| 3405 | |
| 3406 | /* Next is the string table for the space/subspace names. We will |
| 3407 | build and write the string table on the fly. At the same time |
| 3408 | we will fill in the space/subspace name index fields. */ |
| 3409 | |
| 3410 | /* The string table needs to be aligned on a word boundary. */ |
| 3411 | if (current_offset % 4) |
| 3412 | current_offset += (4 - (current_offset % 4)); |
| 3413 | |
| 3414 | /* Mark the offset of the space/subspace string table in the |
| 3415 | file header. */ |
| 3416 | obj_som_file_hdr (abfd)->space_strings_location = current_offset; |
| 3417 | |
| 3418 | /* Scribble out the space strings. */ |
| 3419 | if (! som_write_space_strings (abfd, current_offset, &strings_size)) |
| 3420 | return FALSE; |
| 3421 | |
| 3422 | /* Record total string table size in the header and update the |
| 3423 | current offset. */ |
| 3424 | obj_som_file_hdr (abfd)->space_strings_size = strings_size; |
| 3425 | current_offset += strings_size; |
| 3426 | |
| 3427 | /* Next is the compilation unit. */ |
| 3428 | obj_som_file_hdr (abfd)->compiler_location = current_offset; |
| 3429 | obj_som_file_hdr (abfd)->compiler_total = 0; |
| 3430 | if (obj_som_compilation_unit (abfd)) |
| 3431 | { |
| 3432 | obj_som_file_hdr (abfd)->compiler_total = 1; |
| 3433 | current_offset += COMPUNITSZ; |
| 3434 | } |
| 3435 | |
| 3436 | /* Now compute the file positions for the loadable subspaces, taking |
| 3437 | care to make sure everything stays properly aligned. */ |
| 3438 | |
| 3439 | section = abfd->sections; |
| 3440 | for (i = 0; i < num_spaces; i++) |
| 3441 | { |
| 3442 | asection *subsection; |
| 3443 | int first_subspace; |
| 3444 | unsigned int subspace_offset = 0; |
| 3445 | |
| 3446 | /* Find a space. */ |
| 3447 | while (!som_is_space (section)) |
| 3448 | section = section->next; |
| 3449 | |
| 3450 | first_subspace = 1; |
| 3451 | /* Now look for all its subspaces. */ |
| 3452 | for (subsection = abfd->sections; |
| 3453 | subsection != NULL; |
| 3454 | subsection = subsection->next) |
| 3455 | { |
| 3456 | |
| 3457 | if (!som_is_subspace (subsection) |
| 3458 | || !som_is_container (section, subsection) |
| 3459 | || (subsection->flags & SEC_ALLOC) == 0) |
| 3460 | continue; |
| 3461 | |
| 3462 | /* If this is the first subspace in the space, and we are |
| 3463 | building an executable, then take care to make sure all |
| 3464 | the alignments are correct and update the exec header. */ |
| 3465 | if (first_subspace |
| 3466 | && (abfd->flags & (EXEC_P | DYNAMIC))) |
| 3467 | { |
| 3468 | /* Demand paged executables have each space aligned to a |
| 3469 | page boundary. Sharable executables (write-protected |
| 3470 | text) have just the private (aka data & bss) space aligned |
| 3471 | to a page boundary. Ugh. Not true for HPUX. |
| 3472 | |
| 3473 | The HPUX kernel requires the text to always be page aligned |
| 3474 | within the file regardless of the executable's type. */ |
| 3475 | if (abfd->flags & (D_PAGED | DYNAMIC) |
| 3476 | || (subsection->flags & SEC_CODE) |
| 3477 | || ((abfd->flags & WP_TEXT) |
| 3478 | && (subsection->flags & SEC_DATA))) |
| 3479 | current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); |
| 3480 | |
| 3481 | /* Update the exec header. */ |
| 3482 | if (subsection->flags & SEC_CODE && exec_header->exec_tfile == 0) |
| 3483 | { |
| 3484 | exec_header->exec_tmem = section->vma; |
| 3485 | exec_header->exec_tfile = current_offset; |
| 3486 | } |
| 3487 | if (subsection->flags & SEC_DATA && exec_header->exec_dfile == 0) |
| 3488 | { |
| 3489 | exec_header->exec_dmem = section->vma; |
| 3490 | exec_header->exec_dfile = current_offset; |
| 3491 | } |
| 3492 | |
| 3493 | /* Keep track of exactly where we are within a particular |
| 3494 | space. This is necessary as the braindamaged HPUX |
| 3495 | loader will create holes between subspaces *and* |
| 3496 | subspace alignments are *NOT* preserved. What a crock. */ |
| 3497 | subspace_offset = subsection->vma; |
| 3498 | |
| 3499 | /* Only do this for the first subspace within each space. */ |
| 3500 | first_subspace = 0; |
| 3501 | } |
| 3502 | else if (abfd->flags & (EXEC_P | DYNAMIC)) |
| 3503 | { |
| 3504 | /* The braindamaged HPUX loader may have created a hole |
| 3505 | between two subspaces. It is *not* sufficient to use |
| 3506 | the alignment specifications within the subspaces to |
| 3507 | account for these holes -- I've run into at least one |
| 3508 | case where the loader left one code subspace unaligned |
| 3509 | in a final executable. |
| 3510 | |
| 3511 | To combat this we keep a current offset within each space, |
| 3512 | and use the subspace vma fields to detect and preserve |
| 3513 | holes. What a crock! |
| 3514 | |
| 3515 | ps. This is not necessary for unloadable space/subspaces. */ |
| 3516 | current_offset += subsection->vma - subspace_offset; |
| 3517 | if (subsection->flags & SEC_CODE) |
| 3518 | exec_header->exec_tsize += subsection->vma - subspace_offset; |
| 3519 | else |
| 3520 | exec_header->exec_dsize += subsection->vma - subspace_offset; |
| 3521 | subspace_offset += subsection->vma - subspace_offset; |
| 3522 | } |
| 3523 | |
| 3524 | subsection->target_index = total_subspaces++; |
| 3525 | /* This is real data to be loaded from the file. */ |
| 3526 | if (subsection->flags & SEC_LOAD) |
| 3527 | { |
| 3528 | /* Update the size of the code & data. */ |
| 3529 | if (abfd->flags & (EXEC_P | DYNAMIC) |
| 3530 | && subsection->flags & SEC_CODE) |
| 3531 | exec_header->exec_tsize += subsection->size; |
| 3532 | else if (abfd->flags & (EXEC_P | DYNAMIC) |
| 3533 | && subsection->flags & SEC_DATA) |
| 3534 | exec_header->exec_dsize += subsection->size; |
| 3535 | som_section_data (subsection)->subspace_dict->file_loc_init_value |
| 3536 | = current_offset; |
| 3537 | subsection->filepos = current_offset; |
| 3538 | current_offset += subsection->size; |
| 3539 | subspace_offset += subsection->size; |
| 3540 | } |
| 3541 | /* Looks like uninitialized data. */ |
| 3542 | else |
| 3543 | { |
| 3544 | /* Update the size of the bss section. */ |
| 3545 | if (abfd->flags & (EXEC_P | DYNAMIC)) |
| 3546 | exec_header->exec_bsize += subsection->size; |
| 3547 | |
| 3548 | som_section_data (subsection)->subspace_dict->file_loc_init_value |
| 3549 | = 0; |
| 3550 | som_section_data (subsection)->subspace_dict-> |
| 3551 | initialization_length = 0; |
| 3552 | } |
| 3553 | } |
| 3554 | /* Goto the next section. */ |
| 3555 | section = section->next; |
| 3556 | } |
| 3557 | |
| 3558 | /* Finally compute the file positions for unloadable subspaces. |
| 3559 | If building an executable, start the unloadable stuff on its |
| 3560 | own page. */ |
| 3561 | |
| 3562 | if (abfd->flags & (EXEC_P | DYNAMIC)) |
| 3563 | current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); |
| 3564 | |
| 3565 | obj_som_file_hdr (abfd)->unloadable_sp_location = current_offset; |
| 3566 | section = abfd->sections; |
| 3567 | for (i = 0; i < num_spaces; i++) |
| 3568 | { |
| 3569 | asection *subsection; |
| 3570 | |
| 3571 | /* Find a space. */ |
| 3572 | while (!som_is_space (section)) |
| 3573 | section = section->next; |
| 3574 | |
| 3575 | if (abfd->flags & (EXEC_P | DYNAMIC)) |
| 3576 | current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); |
| 3577 | |
| 3578 | /* Now look for all its subspaces. */ |
| 3579 | for (subsection = abfd->sections; |
| 3580 | subsection != NULL; |
| 3581 | subsection = subsection->next) |
| 3582 | { |
| 3583 | |
| 3584 | if (!som_is_subspace (subsection) |
| 3585 | || !som_is_container (section, subsection) |
| 3586 | || (subsection->flags & SEC_ALLOC) != 0) |
| 3587 | continue; |
| 3588 | |
| 3589 | subsection->target_index = total_subspaces++; |
| 3590 | /* This is real data to be loaded from the file. */ |
| 3591 | if ((subsection->flags & SEC_LOAD) == 0) |
| 3592 | { |
| 3593 | som_section_data (subsection)->subspace_dict->file_loc_init_value |
| 3594 | = current_offset; |
| 3595 | subsection->filepos = current_offset; |
| 3596 | current_offset += subsection->size; |
| 3597 | } |
| 3598 | /* Looks like uninitialized data. */ |
| 3599 | else |
| 3600 | { |
| 3601 | som_section_data (subsection)->subspace_dict->file_loc_init_value |
| 3602 | = 0; |
| 3603 | som_section_data (subsection)->subspace_dict-> |
| 3604 | initialization_length = subsection->size; |
| 3605 | } |
| 3606 | } |
| 3607 | /* Goto the next section. */ |
| 3608 | section = section->next; |
| 3609 | } |
| 3610 | |
| 3611 | /* If building an executable, then make sure to seek to and write |
| 3612 | one byte at the end of the file to make sure any necessary |
| 3613 | zeros are filled in. Ugh. */ |
| 3614 | if (abfd->flags & (EXEC_P | DYNAMIC)) |
| 3615 | current_offset = SOM_ALIGN (current_offset, PA_PAGESIZE); |
| 3616 | if (bfd_seek (abfd, (file_ptr) current_offset - 1, SEEK_SET) != 0) |
| 3617 | return FALSE; |
| 3618 | if (bfd_bwrite ((void *) "", (bfd_size_type) 1, abfd) != 1) |
| 3619 | return FALSE; |
| 3620 | |
| 3621 | obj_som_file_hdr (abfd)->unloadable_sp_size |
| 3622 | = current_offset - obj_som_file_hdr (abfd)->unloadable_sp_location; |
| 3623 | |
| 3624 | /* Loader fixups are not supported in any way shape or form. */ |
| 3625 | obj_som_file_hdr (abfd)->loader_fixup_location = 0; |
| 3626 | obj_som_file_hdr (abfd)->loader_fixup_total = 0; |
| 3627 | |
| 3628 | /* Done. Store the total size of the SOM so far. */ |
| 3629 | obj_som_file_hdr (abfd)->som_length = current_offset; |
| 3630 | |
| 3631 | return TRUE; |
| 3632 | } |
| 3633 | |
| 3634 | /* Finally, scribble out the various headers to the disk. */ |
| 3635 | |
| 3636 | static bfd_boolean |
| 3637 | som_finish_writing (bfd *abfd) |
| 3638 | { |
| 3639 | int num_spaces = som_count_spaces (abfd); |
| 3640 | asymbol **syms = bfd_get_outsymbols (abfd); |
| 3641 | int i, num_syms; |
| 3642 | int subspace_index = 0; |
| 3643 | file_ptr location; |
| 3644 | asection *section; |
| 3645 | unsigned long current_offset; |
| 3646 | unsigned int strings_size, total_reloc_size; |
| 3647 | bfd_size_type amt; |
| 3648 | |
| 3649 | /* We must set up the version identifier here as objcopy/strip copy |
| 3650 | private BFD data too late for us to handle this in som_begin_writing. */ |
| 3651 | if (obj_som_exec_data (abfd) |
| 3652 | && obj_som_exec_data (abfd)->version_id) |
| 3653 | obj_som_file_hdr (abfd)->version_id = obj_som_exec_data (abfd)->version_id; |
| 3654 | else |
| 3655 | obj_som_file_hdr (abfd)->version_id = NEW_VERSION_ID; |
| 3656 | |
| 3657 | /* Next is the symbol table. These are fixed length records. |
| 3658 | |
| 3659 | Count the number of symbols to determine how much room is needed |
| 3660 | in the object file for the symbol table. |
| 3661 | |
| 3662 | The names of the symbols are stored in a separate string table, |
| 3663 | and the index for each symbol name into the string table is computed |
| 3664 | below. Therefore, it is not possible to write the symbol table |
| 3665 | at this time. |
| 3666 | |
| 3667 | These used to be output before the subspace contents, but they |
| 3668 | were moved here to work around a stupid bug in the hpux linker |
| 3669 | (fixed in hpux10). */ |
| 3670 | current_offset = obj_som_file_hdr (abfd)->som_length; |
| 3671 | |
| 3672 | /* Make sure we're on a word boundary. */ |
| 3673 | if (current_offset % 4) |
| 3674 | current_offset += (4 - (current_offset % 4)); |
| 3675 | |
| 3676 | num_syms = bfd_get_symcount (abfd); |
| 3677 | obj_som_file_hdr (abfd)->symbol_location = current_offset; |
| 3678 | obj_som_file_hdr (abfd)->symbol_total = num_syms; |
| 3679 | current_offset += num_syms * sizeof (struct symbol_dictionary_record); |
| 3680 | |
| 3681 | /* Next are the symbol strings. |
| 3682 | Align them to a word boundary. */ |
| 3683 | if (current_offset % 4) |
| 3684 | current_offset += (4 - (current_offset % 4)); |
| 3685 | obj_som_file_hdr (abfd)->symbol_strings_location = current_offset; |
| 3686 | |
| 3687 | /* Scribble out the symbol strings. */ |
| 3688 | if (! som_write_symbol_strings (abfd, current_offset, syms, |
| 3689 | num_syms, &strings_size, |
| 3690 | obj_som_compilation_unit (abfd))) |
| 3691 | return FALSE; |
| 3692 | |
| 3693 | /* Record total string table size in header and update the |
| 3694 | current offset. */ |
| 3695 | obj_som_file_hdr (abfd)->symbol_strings_size = strings_size; |
| 3696 | current_offset += strings_size; |
| 3697 | |
| 3698 | /* Do prep work before handling fixups. */ |
| 3699 | som_prep_for_fixups (abfd, |
| 3700 | bfd_get_outsymbols (abfd), |
| 3701 | bfd_get_symcount (abfd)); |
| 3702 | |
| 3703 | /* At the end of the file is the fixup stream which starts on a |
| 3704 | word boundary. */ |
| 3705 | if (current_offset % 4) |
| 3706 | current_offset += (4 - (current_offset % 4)); |
| 3707 | obj_som_file_hdr (abfd)->fixup_request_location = current_offset; |
| 3708 | |
| 3709 | /* Write the fixups and update fields in subspace headers which |
| 3710 | relate to the fixup stream. */ |
| 3711 | if (! som_write_fixups (abfd, current_offset, &total_reloc_size)) |
| 3712 | return FALSE; |
| 3713 | |
| 3714 | /* Record the total size of the fixup stream in the file header. */ |
| 3715 | obj_som_file_hdr (abfd)->fixup_request_total = total_reloc_size; |
| 3716 | |
| 3717 | /* Done. Store the total size of the SOM. */ |
| 3718 | obj_som_file_hdr (abfd)->som_length = current_offset + total_reloc_size; |
| 3719 | |
| 3720 | /* Now that the symbol table information is complete, build and |
| 3721 | write the symbol table. */ |
| 3722 | if (! som_build_and_write_symbol_table (abfd)) |
| 3723 | return FALSE; |
| 3724 | |
| 3725 | /* Subspaces are written first so that we can set up information |
| 3726 | about them in their containing spaces as the subspace is written. */ |
| 3727 | |
| 3728 | /* Seek to the start of the subspace dictionary records. */ |
| 3729 | location = obj_som_file_hdr (abfd)->subspace_location; |
| 3730 | if (bfd_seek (abfd, location, SEEK_SET) != 0) |
| 3731 | return FALSE; |
| 3732 | |
| 3733 | section = abfd->sections; |
| 3734 | /* Now for each loadable space write out records for its subspaces. */ |
| 3735 | for (i = 0; i < num_spaces; i++) |
| 3736 | { |
| 3737 | asection *subsection; |
| 3738 | |
| 3739 | /* Find a space. */ |
| 3740 | while (!som_is_space (section)) |
| 3741 | section = section->next; |
| 3742 | |
| 3743 | /* Now look for all its subspaces. */ |
| 3744 | for (subsection = abfd->sections; |
| 3745 | subsection != NULL; |
| 3746 | subsection = subsection->next) |
| 3747 | { |
| 3748 | |
| 3749 | /* Skip any section which does not correspond to a space |
| 3750 | or subspace. Or does not have SEC_ALLOC set (and therefore |
| 3751 | has no real bits on the disk). */ |
| 3752 | if (!som_is_subspace (subsection) |
| 3753 | || !som_is_container (section, subsection) |
| 3754 | || (subsection->flags & SEC_ALLOC) == 0) |
| 3755 | continue; |
| 3756 | |
| 3757 | /* If this is the first subspace for this space, then save |
| 3758 | the index of the subspace in its containing space. Also |
| 3759 | set "is_loadable" in the containing space. */ |
| 3760 | |
| 3761 | if (som_section_data (section)->space_dict->subspace_quantity == 0) |
| 3762 | { |
| 3763 | som_section_data (section)->space_dict->is_loadable = 1; |
| 3764 | som_section_data (section)->space_dict->subspace_index |
| 3765 | = subspace_index; |
| 3766 | } |
| 3767 | |
| 3768 | /* Increment the number of subspaces seen and the number of |
| 3769 | subspaces contained within the current space. */ |
| 3770 | subspace_index++; |
| 3771 | som_section_data (section)->space_dict->subspace_quantity++; |
| 3772 | |
| 3773 | /* Mark the index of the current space within the subspace's |
| 3774 | dictionary record. */ |
| 3775 | som_section_data (subsection)->subspace_dict->space_index = i; |
| 3776 | |
| 3777 | /* Dump the current subspace header. */ |
| 3778 | amt = sizeof (struct som_subspace_dictionary_record); |
| 3779 | if (bfd_bwrite ((void *) som_section_data (subsection)->subspace_dict, |
| 3780 | amt, abfd) != amt) |
| 3781 | return FALSE; |
| 3782 | } |
| 3783 | /* Goto the next section. */ |
| 3784 | section = section->next; |
| 3785 | } |
| 3786 | |
| 3787 | /* Now repeat the process for unloadable subspaces. */ |
| 3788 | section = abfd->sections; |
| 3789 | /* Now for each space write out records for its subspaces. */ |
| 3790 | for (i = 0; i < num_spaces; i++) |
| 3791 | { |
| 3792 | asection *subsection; |
| 3793 | |
| 3794 | /* Find a space. */ |
| 3795 | while (!som_is_space (section)) |
| 3796 | section = section->next; |
| 3797 | |
| 3798 | /* Now look for all its subspaces. */ |
| 3799 | for (subsection = abfd->sections; |
| 3800 | subsection != NULL; |
| 3801 | subsection = subsection->next) |
| 3802 | { |
| 3803 | |
| 3804 | /* Skip any section which does not correspond to a space or |
| 3805 | subspace, or which SEC_ALLOC set (and therefore handled |
| 3806 | in the loadable spaces/subspaces code above). */ |
| 3807 | |
| 3808 | if (!som_is_subspace (subsection) |
| 3809 | || !som_is_container (section, subsection) |
| 3810 | || (subsection->flags & SEC_ALLOC) != 0) |
| 3811 | continue; |
| 3812 | |
| 3813 | /* If this is the first subspace for this space, then save |
| 3814 | the index of the subspace in its containing space. Clear |
| 3815 | "is_loadable". */ |
| 3816 | |
| 3817 | if (som_section_data (section)->space_dict->subspace_quantity == 0) |
| 3818 | { |
| 3819 | som_section_data (section)->space_dict->is_loadable = 0; |
| 3820 | som_section_data (section)->space_dict->subspace_index |
| 3821 | = subspace_index; |
| 3822 | } |
| 3823 | |
| 3824 | /* Increment the number of subspaces seen and the number of |
| 3825 | subspaces contained within the current space. */ |
| 3826 | som_section_data (section)->space_dict->subspace_quantity++; |
| 3827 | subspace_index++; |
| 3828 | |
| 3829 | /* Mark the index of the current space within the subspace's |
| 3830 | dictionary record. */ |
| 3831 | som_section_data (subsection)->subspace_dict->space_index = i; |
| 3832 | |
| 3833 | /* Dump this subspace header. */ |
| 3834 | amt = sizeof (struct som_subspace_dictionary_record); |
| 3835 | if (bfd_bwrite ((void *) som_section_data (subsection)->subspace_dict, |
| 3836 | amt, abfd) != amt) |
| 3837 | return FALSE; |
| 3838 | } |
| 3839 | /* Goto the next section. */ |
| 3840 | section = section->next; |
| 3841 | } |
| 3842 | |
| 3843 | /* All the subspace dictionary records are written, and all the |
| 3844 | fields are set up in the space dictionary records. |
| 3845 | |
| 3846 | Seek to the right location and start writing the space |
| 3847 | dictionary records. */ |
| 3848 | location = obj_som_file_hdr (abfd)->space_location; |
| 3849 | if (bfd_seek (abfd, location, SEEK_SET) != 0) |
| 3850 | return FALSE; |
| 3851 | |
| 3852 | section = abfd->sections; |
| 3853 | for (i = 0; i < num_spaces; i++) |
| 3854 | { |
| 3855 | /* Find a space. */ |
| 3856 | while (!som_is_space (section)) |
| 3857 | section = section->next; |
| 3858 | |
| 3859 | /* Dump its header. */ |
| 3860 | amt = sizeof (struct space_dictionary_record); |
| 3861 | if (bfd_bwrite ((void *) som_section_data (section)->space_dict, |
| 3862 | amt, abfd) != amt) |
| 3863 | return FALSE; |
| 3864 | |
| 3865 | /* Goto the next section. */ |
| 3866 | section = section->next; |
| 3867 | } |
| 3868 | |
| 3869 | /* Write the compilation unit record if there is one. */ |
| 3870 | if (obj_som_compilation_unit (abfd)) |
| 3871 | { |
| 3872 | location = obj_som_file_hdr (abfd)->compiler_location; |
| 3873 | if (bfd_seek (abfd, location, SEEK_SET) != 0) |
| 3874 | return FALSE; |
| 3875 | |
| 3876 | amt = COMPUNITSZ; |
| 3877 | if (bfd_bwrite ((void *) obj_som_compilation_unit (abfd), amt, abfd) != amt) |
| 3878 | return FALSE; |
| 3879 | } |
| 3880 | |
| 3881 | /* Setting of the system_id has to happen very late now that copying of |
| 3882 | BFD private data happens *after* section contents are set. */ |
| 3883 | if (abfd->flags & (EXEC_P | DYNAMIC)) |
| 3884 | obj_som_file_hdr (abfd)->system_id = obj_som_exec_data (abfd)->system_id; |
| 3885 | else if (bfd_get_mach (abfd) == pa20) |
| 3886 | obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC2_0; |
| 3887 | else if (bfd_get_mach (abfd) == pa11) |
| 3888 | obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_1; |
| 3889 | else |
| 3890 | obj_som_file_hdr (abfd)->system_id = CPU_PA_RISC1_0; |
| 3891 | |
| 3892 | /* Compute the checksum for the file header just before writing |
| 3893 | the header to disk. */ |
| 3894 | obj_som_file_hdr (abfd)->checksum = som_compute_checksum (abfd); |
| 3895 | |
| 3896 | /* Only thing left to do is write out the file header. It is always |
| 3897 | at location zero. Seek there and write it. */ |
| 3898 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) |
| 3899 | return FALSE; |
| 3900 | amt = sizeof (struct header); |
| 3901 | if (bfd_bwrite ((void *) obj_som_file_hdr (abfd), amt, abfd) != amt) |
| 3902 | return FALSE; |
| 3903 | |
| 3904 | /* Now write the exec header. */ |
| 3905 | if (abfd->flags & (EXEC_P | DYNAMIC)) |
| 3906 | { |
| 3907 | long tmp, som_length; |
| 3908 | struct som_exec_auxhdr *exec_header; |
| 3909 | |
| 3910 | exec_header = obj_som_exec_hdr (abfd); |
| 3911 | exec_header->exec_entry = bfd_get_start_address (abfd); |
| 3912 | exec_header->exec_flags = obj_som_exec_data (abfd)->exec_flags; |
| 3913 | |
| 3914 | /* Oh joys. Ram some of the BSS data into the DATA section |
| 3915 | to be compatible with how the hp linker makes objects |
| 3916 | (saves memory space). */ |
| 3917 | tmp = exec_header->exec_dsize; |
| 3918 | tmp = SOM_ALIGN (tmp, PA_PAGESIZE); |
| 3919 | exec_header->exec_bsize -= (tmp - exec_header->exec_dsize); |
| 3920 | if (exec_header->exec_bsize < 0) |
| 3921 | exec_header->exec_bsize = 0; |
| 3922 | exec_header->exec_dsize = tmp; |
| 3923 | |
| 3924 | /* Now perform some sanity checks. The idea is to catch bogons now and |
| 3925 | inform the user, instead of silently generating a bogus file. */ |
| 3926 | som_length = obj_som_file_hdr (abfd)->som_length; |
| 3927 | if (exec_header->exec_tfile + exec_header->exec_tsize > som_length |
| 3928 | || exec_header->exec_dfile + exec_header->exec_dsize > som_length) |
| 3929 | { |
| 3930 | bfd_set_error (bfd_error_bad_value); |
| 3931 | return FALSE; |
| 3932 | } |
| 3933 | |
| 3934 | if (bfd_seek (abfd, obj_som_file_hdr (abfd)->aux_header_location, |
| 3935 | SEEK_SET) != 0) |
| 3936 | return FALSE; |
| 3937 | |
| 3938 | amt = AUX_HDR_SIZE; |
| 3939 | if (bfd_bwrite ((void *) exec_header, amt, abfd) != amt) |
| 3940 | return FALSE; |
| 3941 | } |
| 3942 | return TRUE; |
| 3943 | } |
| 3944 | |
| 3945 | /* Compute and return the checksum for a SOM file header. */ |
| 3946 | |
| 3947 | static unsigned long |
| 3948 | som_compute_checksum (bfd *abfd) |
| 3949 | { |
| 3950 | unsigned long checksum, count, i; |
| 3951 | unsigned long *buffer = (unsigned long *) obj_som_file_hdr (abfd); |
| 3952 | |
| 3953 | checksum = 0; |
| 3954 | count = sizeof (struct header) / sizeof (unsigned long); |
| 3955 | for (i = 0; i < count; i++) |
| 3956 | checksum ^= *(buffer + i); |
| 3957 | |
| 3958 | return checksum; |
| 3959 | } |
| 3960 | |
| 3961 | static void |
| 3962 | som_bfd_derive_misc_symbol_info (bfd *abfd ATTRIBUTE_UNUSED, |
| 3963 | asymbol *sym, |
| 3964 | struct som_misc_symbol_info *info) |
| 3965 | { |
| 3966 | /* Initialize. */ |
| 3967 | memset (info, 0, sizeof (struct som_misc_symbol_info)); |
| 3968 | |
| 3969 | /* The HP SOM linker requires detailed type information about |
| 3970 | all symbols (including undefined symbols!). Unfortunately, |
| 3971 | the type specified in an import/export statement does not |
| 3972 | always match what the linker wants. Severe braindamage. */ |
| 3973 | |
| 3974 | /* Section symbols will not have a SOM symbol type assigned to |
| 3975 | them yet. Assign all section symbols type ST_DATA. */ |
| 3976 | if (sym->flags & BSF_SECTION_SYM) |
| 3977 | info->symbol_type = ST_DATA; |
| 3978 | else |
| 3979 | { |
| 3980 | /* For BFD style common, the linker will choke unless we set the |
| 3981 | type and scope to ST_STORAGE and SS_UNSAT, respectively. */ |
| 3982 | if (bfd_is_com_section (sym->section)) |
| 3983 | { |
| 3984 | info->symbol_type = ST_STORAGE; |
| 3985 | info->symbol_scope = SS_UNSAT; |
| 3986 | } |
| 3987 | |
| 3988 | /* It is possible to have a symbol without an associated |
| 3989 | type. This happens if the user imported the symbol |
| 3990 | without a type and the symbol was never defined |
| 3991 | locally. If BSF_FUNCTION is set for this symbol, then |
| 3992 | assign it type ST_CODE (the HP linker requires undefined |
| 3993 | external functions to have type ST_CODE rather than ST_ENTRY). */ |
| 3994 | else if ((som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN |
| 3995 | || som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE) |
| 3996 | && bfd_is_und_section (sym->section) |
| 3997 | && sym->flags & BSF_FUNCTION) |
| 3998 | info->symbol_type = ST_CODE; |
| 3999 | |
| 4000 | /* Handle function symbols which were defined in this file. |
| 4001 | They should have type ST_ENTRY. Also retrieve the argument |
| 4002 | relocation bits from the SOM backend information. */ |
| 4003 | else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ENTRY |
| 4004 | || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE |
| 4005 | && (sym->flags & BSF_FUNCTION)) |
| 4006 | || (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN |
| 4007 | && (sym->flags & BSF_FUNCTION))) |
| 4008 | { |
| 4009 | info->symbol_type = ST_ENTRY; |
| 4010 | info->arg_reloc = som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc; |
| 4011 | info->priv_level= som_symbol_data (sym)->tc_data.ap.hppa_priv_level; |
| 4012 | } |
| 4013 | |
| 4014 | /* For unknown symbols set the symbol's type based on the symbol's |
| 4015 | section (ST_DATA for DATA sections, ST_CODE for CODE sections). */ |
| 4016 | else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_UNKNOWN) |
| 4017 | { |
| 4018 | if (sym->section->flags & SEC_CODE) |
| 4019 | info->symbol_type = ST_CODE; |
| 4020 | else |
| 4021 | info->symbol_type = ST_DATA; |
| 4022 | } |
| 4023 | |
| 4024 | /* From now on it's a very simple mapping. */ |
| 4025 | else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_ABSOLUTE) |
| 4026 | info->symbol_type = ST_ABSOLUTE; |
| 4027 | else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_CODE) |
| 4028 | info->symbol_type = ST_CODE; |
| 4029 | else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_DATA) |
| 4030 | info->symbol_type = ST_DATA; |
| 4031 | else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_MILLICODE) |
| 4032 | info->symbol_type = ST_MILLICODE; |
| 4033 | else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PLABEL) |
| 4034 | info->symbol_type = ST_PLABEL; |
| 4035 | else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_PRI_PROG) |
| 4036 | info->symbol_type = ST_PRI_PROG; |
| 4037 | else if (som_symbol_data (sym)->som_type == SYMBOL_TYPE_SEC_PROG) |
| 4038 | info->symbol_type = ST_SEC_PROG; |
| 4039 | } |
| 4040 | |
| 4041 | /* Now handle the symbol's scope. Exported data which is not |
| 4042 | in the common section has scope SS_UNIVERSAL. Note scope |
| 4043 | of common symbols was handled earlier! */ |
| 4044 | if (bfd_is_com_section (sym->section)) |
| 4045 | ; |
| 4046 | else if (bfd_is_und_section (sym->section)) |
| 4047 | info->symbol_scope = SS_UNSAT; |
| 4048 | else if (sym->flags & (BSF_EXPORT | BSF_WEAK)) |
| 4049 | info->symbol_scope = SS_UNIVERSAL; |
| 4050 | /* Anything else which is not in the common section has scope |
| 4051 | SS_LOCAL. */ |
| 4052 | else |
| 4053 | info->symbol_scope = SS_LOCAL; |
| 4054 | |
| 4055 | /* Now set the symbol_info field. It has no real meaning |
| 4056 | for undefined or common symbols, but the HP linker will |
| 4057 | choke if it's not set to some "reasonable" value. We |
| 4058 | use zero as a reasonable value. */ |
| 4059 | if (bfd_is_com_section (sym->section) |
| 4060 | || bfd_is_und_section (sym->section) |
| 4061 | || bfd_is_abs_section (sym->section)) |
| 4062 | info->symbol_info = 0; |
| 4063 | /* For all other symbols, the symbol_info field contains the |
| 4064 | subspace index of the space this symbol is contained in. */ |
| 4065 | else |
| 4066 | info->symbol_info = sym->section->target_index; |
| 4067 | |
| 4068 | /* Set the symbol's value. */ |
| 4069 | info->symbol_value = sym->value + sym->section->vma; |
| 4070 | |
| 4071 | /* The secondary_def field is for "weak" symbols. */ |
| 4072 | if (sym->flags & BSF_WEAK) |
| 4073 | info->secondary_def = TRUE; |
| 4074 | else |
| 4075 | info->secondary_def = FALSE; |
| 4076 | |
| 4077 | /* The is_comdat, is_common and dup_common fields provide various |
| 4078 | flavors of common. |
| 4079 | |
| 4080 | For data symbols, setting IS_COMMON provides Fortran style common |
| 4081 | (duplicate definitions and overlapped initialization). Setting both |
| 4082 | IS_COMMON and DUP_COMMON provides Cobol style common (duplicate |
| 4083 | definitions as long as they are all the same length). In a shared |
| 4084 | link data symbols retain their IS_COMMON and DUP_COMMON flags. |
| 4085 | An IS_COMDAT data symbol is similar to a IS_COMMON | DUP_COMMON |
| 4086 | symbol except in that it loses its IS_COMDAT flag in a shared link. |
| 4087 | |
| 4088 | For code symbols, IS_COMDAT and DUP_COMMON have effect. Universal |
| 4089 | DUP_COMMON code symbols are not exported from shared libraries. |
| 4090 | IS_COMDAT symbols are exported but they lose their IS_COMDAT flag. |
| 4091 | |
| 4092 | We take a simplified approach to setting the is_comdat, is_common |
| 4093 | and dup_common flags in symbols based on the flag settings of their |
| 4094 | subspace. This avoids having to add directives like `.comdat' but |
| 4095 | the linker behavior is probably undefined if there is more than one |
| 4096 | universal symbol (comdat key sysmbol) in a subspace. |
| 4097 | |
| 4098 | The behavior of these flags is not well documentmented, so there |
| 4099 | may be bugs and some surprising interactions with other flags. */ |
| 4100 | if (som_section_data (sym->section) |
| 4101 | && som_section_data (sym->section)->subspace_dict |
| 4102 | && info->symbol_scope == SS_UNIVERSAL |
| 4103 | && (info->symbol_type == ST_ENTRY |
| 4104 | || info->symbol_type == ST_CODE |
| 4105 | || info->symbol_type == ST_DATA)) |
| 4106 | { |
| 4107 | info->is_comdat |
| 4108 | = som_section_data (sym->section)->subspace_dict->is_comdat; |
| 4109 | info->is_common |
| 4110 | = som_section_data (sym->section)->subspace_dict->is_common; |
| 4111 | info->dup_common |
| 4112 | = som_section_data (sym->section)->subspace_dict->dup_common; |
| 4113 | } |
| 4114 | } |
| 4115 | |
| 4116 | /* Build and write, in one big chunk, the entire symbol table for |
| 4117 | this BFD. */ |
| 4118 | |
| 4119 | static bfd_boolean |
| 4120 | som_build_and_write_symbol_table (bfd *abfd) |
| 4121 | { |
| 4122 | unsigned int num_syms = bfd_get_symcount (abfd); |
| 4123 | file_ptr symtab_location = obj_som_file_hdr (abfd)->symbol_location; |
| 4124 | asymbol **bfd_syms = obj_som_sorted_syms (abfd); |
| 4125 | struct symbol_dictionary_record *som_symtab = NULL; |
| 4126 | unsigned int i; |
| 4127 | bfd_size_type symtab_size; |
| 4128 | |
| 4129 | /* Compute total symbol table size and allocate a chunk of memory |
| 4130 | to hold the symbol table as we build it. */ |
| 4131 | symtab_size = num_syms; |
| 4132 | symtab_size *= sizeof (struct symbol_dictionary_record); |
| 4133 | som_symtab = bfd_zmalloc (symtab_size); |
| 4134 | if (som_symtab == NULL && symtab_size != 0) |
| 4135 | goto error_return; |
| 4136 | |
| 4137 | /* Walk over each symbol. */ |
| 4138 | for (i = 0; i < num_syms; i++) |
| 4139 | { |
| 4140 | struct som_misc_symbol_info info; |
| 4141 | |
| 4142 | /* This is really an index into the symbol strings table. |
| 4143 | By the time we get here, the index has already been |
| 4144 | computed and stored into the name field in the BFD symbol. */ |
| 4145 | som_symtab[i].name.n_strx = som_symbol_data(bfd_syms[i])->stringtab_offset; |
| 4146 | |
| 4147 | /* Derive SOM information from the BFD symbol. */ |
| 4148 | som_bfd_derive_misc_symbol_info (abfd, bfd_syms[i], &info); |
| 4149 | |
| 4150 | /* Now use it. */ |
| 4151 | som_symtab[i].symbol_type = info.symbol_type; |
| 4152 | som_symtab[i].symbol_scope = info.symbol_scope; |
| 4153 | som_symtab[i].arg_reloc = info.arg_reloc; |
| 4154 | som_symtab[i].symbol_info = info.symbol_info; |
| 4155 | som_symtab[i].xleast = 3; |
| 4156 | som_symtab[i].symbol_value = info.symbol_value | info.priv_level; |
| 4157 | som_symtab[i].secondary_def = info.secondary_def; |
| 4158 | som_symtab[i].is_comdat = info.is_comdat; |
| 4159 | som_symtab[i].is_common = info.is_common; |
| 4160 | som_symtab[i].dup_common = info.dup_common; |
| 4161 | } |
| 4162 | |
| 4163 | /* Everything is ready, seek to the right location and |
| 4164 | scribble out the symbol table. */ |
| 4165 | if (bfd_seek (abfd, symtab_location, SEEK_SET) != 0) |
| 4166 | return FALSE; |
| 4167 | |
| 4168 | if (bfd_bwrite ((void *) som_symtab, symtab_size, abfd) != symtab_size) |
| 4169 | goto error_return; |
| 4170 | |
| 4171 | if (som_symtab != NULL) |
| 4172 | free (som_symtab); |
| 4173 | return TRUE; |
| 4174 | error_return: |
| 4175 | if (som_symtab != NULL) |
| 4176 | free (som_symtab); |
| 4177 | return FALSE; |
| 4178 | } |
| 4179 | |
| 4180 | /* Write an object in SOM format. */ |
| 4181 | |
| 4182 | static bfd_boolean |
| 4183 | som_write_object_contents (bfd *abfd) |
| 4184 | { |
| 4185 | if (! abfd->output_has_begun) |
| 4186 | { |
| 4187 | /* Set up fixed parts of the file, space, and subspace headers. |
| 4188 | Notify the world that output has begun. */ |
| 4189 | som_prep_headers (abfd); |
| 4190 | abfd->output_has_begun = TRUE; |
| 4191 | /* Start writing the object file. This include all the string |
| 4192 | tables, fixup streams, and other portions of the object file. */ |
| 4193 | som_begin_writing (abfd); |
| 4194 | } |
| 4195 | |
| 4196 | return som_finish_writing (abfd); |
| 4197 | } |
| 4198 | \f |
| 4199 | /* Read and save the string table associated with the given BFD. */ |
| 4200 | |
| 4201 | static bfd_boolean |
| 4202 | som_slurp_string_table (bfd *abfd) |
| 4203 | { |
| 4204 | char *stringtab; |
| 4205 | bfd_size_type amt; |
| 4206 | |
| 4207 | /* Use the saved version if its available. */ |
| 4208 | if (obj_som_stringtab (abfd) != NULL) |
| 4209 | return TRUE; |
| 4210 | |
| 4211 | /* I don't think this can currently happen, and I'm not sure it should |
| 4212 | really be an error, but it's better than getting unpredictable results |
| 4213 | from the host's malloc when passed a size of zero. */ |
| 4214 | if (obj_som_stringtab_size (abfd) == 0) |
| 4215 | { |
| 4216 | bfd_set_error (bfd_error_no_symbols); |
| 4217 | return FALSE; |
| 4218 | } |
| 4219 | |
| 4220 | /* Allocate and read in the string table. */ |
| 4221 | amt = obj_som_stringtab_size (abfd); |
| 4222 | stringtab = bfd_zmalloc (amt); |
| 4223 | if (stringtab == NULL) |
| 4224 | return FALSE; |
| 4225 | |
| 4226 | if (bfd_seek (abfd, obj_som_str_filepos (abfd), SEEK_SET) != 0) |
| 4227 | return FALSE; |
| 4228 | |
| 4229 | if (bfd_bread (stringtab, amt, abfd) != amt) |
| 4230 | return FALSE; |
| 4231 | |
| 4232 | /* Save our results and return success. */ |
| 4233 | obj_som_stringtab (abfd) = stringtab; |
| 4234 | return TRUE; |
| 4235 | } |
| 4236 | |
| 4237 | /* Return the amount of data (in bytes) required to hold the symbol |
| 4238 | table for this object. */ |
| 4239 | |
| 4240 | static long |
| 4241 | som_get_symtab_upper_bound (bfd *abfd) |
| 4242 | { |
| 4243 | if (!som_slurp_symbol_table (abfd)) |
| 4244 | return -1; |
| 4245 | |
| 4246 | return (bfd_get_symcount (abfd) + 1) * sizeof (asymbol *); |
| 4247 | } |
| 4248 | |
| 4249 | /* Convert from a SOM subspace index to a BFD section. */ |
| 4250 | |
| 4251 | static asection * |
| 4252 | bfd_section_from_som_symbol (bfd *abfd, struct symbol_dictionary_record *symbol) |
| 4253 | { |
| 4254 | asection *section; |
| 4255 | |
| 4256 | /* The meaning of the symbol_info field changes for functions |
| 4257 | within executables. So only use the quick symbol_info mapping for |
| 4258 | incomplete objects and non-function symbols in executables. */ |
| 4259 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 |
| 4260 | || (symbol->symbol_type != ST_ENTRY |
| 4261 | && symbol->symbol_type != ST_PRI_PROG |
| 4262 | && symbol->symbol_type != ST_SEC_PROG |
| 4263 | && symbol->symbol_type != ST_MILLICODE)) |
| 4264 | { |
| 4265 | int index = symbol->symbol_info; |
| 4266 | |
| 4267 | for (section = abfd->sections; section != NULL; section = section->next) |
| 4268 | if (section->target_index == index && som_is_subspace (section)) |
| 4269 | return section; |
| 4270 | } |
| 4271 | else |
| 4272 | { |
| 4273 | unsigned int value = symbol->symbol_value; |
| 4274 | |
| 4275 | /* For executables we will have to use the symbol's address and |
| 4276 | find out what section would contain that address. Yuk. */ |
| 4277 | for (section = abfd->sections; section; section = section->next) |
| 4278 | if (value >= section->vma |
| 4279 | && value <= section->vma + section->size |
| 4280 | && som_is_subspace (section)) |
| 4281 | return section; |
| 4282 | } |
| 4283 | |
| 4284 | /* Could be a symbol from an external library (such as an OMOS |
| 4285 | shared library). Don't abort. */ |
| 4286 | return bfd_abs_section_ptr; |
| 4287 | } |
| 4288 | |
| 4289 | /* Read and save the symbol table associated with the given BFD. */ |
| 4290 | |
| 4291 | static unsigned int |
| 4292 | som_slurp_symbol_table (bfd *abfd) |
| 4293 | { |
| 4294 | int symbol_count = bfd_get_symcount (abfd); |
| 4295 | int symsize = sizeof (struct symbol_dictionary_record); |
| 4296 | char *stringtab; |
| 4297 | struct symbol_dictionary_record *buf = NULL, *bufp, *endbufp; |
| 4298 | som_symbol_type *sym, *symbase; |
| 4299 | bfd_size_type amt; |
| 4300 | |
| 4301 | /* Return saved value if it exists. */ |
| 4302 | if (obj_som_symtab (abfd) != NULL) |
| 4303 | goto successful_return; |
| 4304 | |
| 4305 | /* Special case. This is *not* an error. */ |
| 4306 | if (symbol_count == 0) |
| 4307 | goto successful_return; |
| 4308 | |
| 4309 | if (!som_slurp_string_table (abfd)) |
| 4310 | goto error_return; |
| 4311 | |
| 4312 | stringtab = obj_som_stringtab (abfd); |
| 4313 | |
| 4314 | amt = symbol_count; |
| 4315 | amt *= sizeof (som_symbol_type); |
| 4316 | symbase = bfd_zmalloc (amt); |
| 4317 | if (symbase == NULL) |
| 4318 | goto error_return; |
| 4319 | |
| 4320 | /* Read in the external SOM representation. */ |
| 4321 | amt = symbol_count; |
| 4322 | amt *= symsize; |
| 4323 | buf = bfd_malloc (amt); |
| 4324 | if (buf == NULL && amt != 0) |
| 4325 | goto error_return; |
| 4326 | if (bfd_seek (abfd, obj_som_sym_filepos (abfd), SEEK_SET) != 0) |
| 4327 | goto error_return; |
| 4328 | if (bfd_bread (buf, amt, abfd) != amt) |
| 4329 | goto error_return; |
| 4330 | |
| 4331 | /* Iterate over all the symbols and internalize them. */ |
| 4332 | endbufp = buf + symbol_count; |
| 4333 | for (bufp = buf, sym = symbase; bufp < endbufp; ++bufp) |
| 4334 | { |
| 4335 | /* I don't think we care about these. */ |
| 4336 | if (bufp->symbol_type == ST_SYM_EXT |
| 4337 | || bufp->symbol_type == ST_ARG_EXT) |
| 4338 | continue; |
| 4339 | |
| 4340 | /* Set some private data we care about. */ |
| 4341 | if (bufp->symbol_type == ST_NULL) |
| 4342 | som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN; |
| 4343 | else if (bufp->symbol_type == ST_ABSOLUTE) |
| 4344 | som_symbol_data (sym)->som_type = SYMBOL_TYPE_ABSOLUTE; |
| 4345 | else if (bufp->symbol_type == ST_DATA) |
| 4346 | som_symbol_data (sym)->som_type = SYMBOL_TYPE_DATA; |
| 4347 | else if (bufp->symbol_type == ST_CODE) |
| 4348 | som_symbol_data (sym)->som_type = SYMBOL_TYPE_CODE; |
| 4349 | else if (bufp->symbol_type == ST_PRI_PROG) |
| 4350 | som_symbol_data (sym)->som_type = SYMBOL_TYPE_PRI_PROG; |
| 4351 | else if (bufp->symbol_type == ST_SEC_PROG) |
| 4352 | som_symbol_data (sym)->som_type = SYMBOL_TYPE_SEC_PROG; |
| 4353 | else if (bufp->symbol_type == ST_ENTRY) |
| 4354 | som_symbol_data (sym)->som_type = SYMBOL_TYPE_ENTRY; |
| 4355 | else if (bufp->symbol_type == ST_MILLICODE) |
| 4356 | som_symbol_data (sym)->som_type = SYMBOL_TYPE_MILLICODE; |
| 4357 | else if (bufp->symbol_type == ST_PLABEL) |
| 4358 | som_symbol_data (sym)->som_type = SYMBOL_TYPE_PLABEL; |
| 4359 | else |
| 4360 | som_symbol_data (sym)->som_type = SYMBOL_TYPE_UNKNOWN; |
| 4361 | som_symbol_data (sym)->tc_data.ap.hppa_arg_reloc = bufp->arg_reloc; |
| 4362 | |
| 4363 | /* Some reasonable defaults. */ |
| 4364 | sym->symbol.the_bfd = abfd; |
| 4365 | sym->symbol.name = bufp->name.n_strx + stringtab; |
| 4366 | sym->symbol.value = bufp->symbol_value; |
| 4367 | sym->symbol.section = 0; |
| 4368 | sym->symbol.flags = 0; |
| 4369 | |
| 4370 | switch (bufp->symbol_type) |
| 4371 | { |
| 4372 | case ST_ENTRY: |
| 4373 | case ST_MILLICODE: |
| 4374 | sym->symbol.flags |= BSF_FUNCTION; |
| 4375 | som_symbol_data (sym)->tc_data.ap.hppa_priv_level = |
| 4376 | sym->symbol.value & 0x3; |
| 4377 | sym->symbol.value &= ~0x3; |
| 4378 | break; |
| 4379 | |
| 4380 | case ST_STUB: |
| 4381 | case ST_CODE: |
| 4382 | case ST_PRI_PROG: |
| 4383 | case ST_SEC_PROG: |
| 4384 | som_symbol_data (sym)->tc_data.ap.hppa_priv_level = |
| 4385 | sym->symbol.value & 0x3; |
| 4386 | sym->symbol.value &= ~0x3; |
| 4387 | /* If the symbol's scope is SS_UNSAT, then these are |
| 4388 | undefined function symbols. */ |
| 4389 | if (bufp->symbol_scope == SS_UNSAT) |
| 4390 | sym->symbol.flags |= BSF_FUNCTION; |
| 4391 | |
| 4392 | default: |
| 4393 | break; |
| 4394 | } |
| 4395 | |
| 4396 | /* Handle scoping and section information. */ |
| 4397 | switch (bufp->symbol_scope) |
| 4398 | { |
| 4399 | /* symbol_info field is undefined for SS_EXTERNAL and SS_UNSAT symbols, |
| 4400 | so the section associated with this symbol can't be known. */ |
| 4401 | case SS_EXTERNAL: |
| 4402 | if (bufp->symbol_type != ST_STORAGE) |
| 4403 | sym->symbol.section = bfd_und_section_ptr; |
| 4404 | else |
| 4405 | sym->symbol.section = bfd_com_section_ptr; |
| 4406 | sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL); |
| 4407 | break; |
| 4408 | |
| 4409 | case SS_UNSAT: |
| 4410 | if (bufp->symbol_type != ST_STORAGE) |
| 4411 | sym->symbol.section = bfd_und_section_ptr; |
| 4412 | else |
| 4413 | sym->symbol.section = bfd_com_section_ptr; |
| 4414 | break; |
| 4415 | |
| 4416 | case SS_UNIVERSAL: |
| 4417 | sym->symbol.flags |= (BSF_EXPORT | BSF_GLOBAL); |
| 4418 | sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp); |
| 4419 | sym->symbol.value -= sym->symbol.section->vma; |
| 4420 | break; |
| 4421 | |
| 4422 | case SS_LOCAL: |
| 4423 | sym->symbol.flags |= BSF_LOCAL; |
| 4424 | sym->symbol.section = bfd_section_from_som_symbol (abfd, bufp); |
| 4425 | sym->symbol.value -= sym->symbol.section->vma; |
| 4426 | break; |
| 4427 | } |
| 4428 | |
| 4429 | /* Check for a weak symbol. */ |
| 4430 | if (bufp->secondary_def) |
| 4431 | sym->symbol.flags |= BSF_WEAK; |
| 4432 | |
| 4433 | /* Mark section symbols and symbols used by the debugger. |
| 4434 | Note $START$ is a magic code symbol, NOT a section symbol. */ |
| 4435 | if (sym->symbol.name[0] == '$' |
| 4436 | && sym->symbol.name[strlen (sym->symbol.name) - 1] == '$' |
| 4437 | && !strcmp (sym->symbol.name, sym->symbol.section->name)) |
| 4438 | sym->symbol.flags |= BSF_SECTION_SYM; |
| 4439 | else if (CONST_STRNEQ (sym->symbol.name, "L$0\002")) |
| 4440 | { |
| 4441 | sym->symbol.flags |= BSF_SECTION_SYM; |
| 4442 | sym->symbol.name = sym->symbol.section->name; |
| 4443 | } |
| 4444 | else if (CONST_STRNEQ (sym->symbol.name, "L$0\001")) |
| 4445 | sym->symbol.flags |= BSF_DEBUGGING; |
| 4446 | |
| 4447 | /* Note increment at bottom of loop, since we skip some symbols |
| 4448 | we can not include it as part of the for statement. */ |
| 4449 | sym++; |
| 4450 | } |
| 4451 | |
| 4452 | /* We modify the symbol count to record the number of BFD symbols we |
| 4453 | created. */ |
| 4454 | bfd_get_symcount (abfd) = sym - symbase; |
| 4455 | |
| 4456 | /* Save our results and return success. */ |
| 4457 | obj_som_symtab (abfd) = symbase; |
| 4458 | successful_return: |
| 4459 | if (buf != NULL) |
| 4460 | free (buf); |
| 4461 | return (TRUE); |
| 4462 | |
| 4463 | error_return: |
| 4464 | if (buf != NULL) |
| 4465 | free (buf); |
| 4466 | return FALSE; |
| 4467 | } |
| 4468 | |
| 4469 | /* Canonicalize a SOM symbol table. Return the number of entries |
| 4470 | in the symbol table. */ |
| 4471 | |
| 4472 | static long |
| 4473 | som_canonicalize_symtab (bfd *abfd, asymbol **location) |
| 4474 | { |
| 4475 | int i; |
| 4476 | som_symbol_type *symbase; |
| 4477 | |
| 4478 | if (!som_slurp_symbol_table (abfd)) |
| 4479 | return -1; |
| 4480 | |
| 4481 | i = bfd_get_symcount (abfd); |
| 4482 | symbase = obj_som_symtab (abfd); |
| 4483 | |
| 4484 | for (; i > 0; i--, location++, symbase++) |
| 4485 | *location = &symbase->symbol; |
| 4486 | |
| 4487 | /* Final null pointer. */ |
| 4488 | *location = 0; |
| 4489 | return (bfd_get_symcount (abfd)); |
| 4490 | } |
| 4491 | |
| 4492 | /* Make a SOM symbol. There is nothing special to do here. */ |
| 4493 | |
| 4494 | static asymbol * |
| 4495 | som_make_empty_symbol (bfd *abfd) |
| 4496 | { |
| 4497 | bfd_size_type amt = sizeof (som_symbol_type); |
| 4498 | som_symbol_type *new = bfd_zalloc (abfd, amt); |
| 4499 | |
| 4500 | if (new == NULL) |
| 4501 | return NULL; |
| 4502 | new->symbol.the_bfd = abfd; |
| 4503 | |
| 4504 | return &new->symbol; |
| 4505 | } |
| 4506 | |
| 4507 | /* Print symbol information. */ |
| 4508 | |
| 4509 | static void |
| 4510 | som_print_symbol (bfd *abfd, |
| 4511 | void *afile, |
| 4512 | asymbol *symbol, |
| 4513 | bfd_print_symbol_type how) |
| 4514 | { |
| 4515 | FILE *file = (FILE *) afile; |
| 4516 | |
| 4517 | switch (how) |
| 4518 | { |
| 4519 | case bfd_print_symbol_name: |
| 4520 | fprintf (file, "%s", symbol->name); |
| 4521 | break; |
| 4522 | case bfd_print_symbol_more: |
| 4523 | fprintf (file, "som "); |
| 4524 | fprintf_vma (file, symbol->value); |
| 4525 | fprintf (file, " %lx", (long) symbol->flags); |
| 4526 | break; |
| 4527 | case bfd_print_symbol_all: |
| 4528 | { |
| 4529 | const char *section_name; |
| 4530 | |
| 4531 | section_name = symbol->section ? symbol->section->name : "(*none*)"; |
| 4532 | bfd_print_symbol_vandf (abfd, (void *) file, symbol); |
| 4533 | fprintf (file, " %s\t%s", section_name, symbol->name); |
| 4534 | break; |
| 4535 | } |
| 4536 | } |
| 4537 | } |
| 4538 | |
| 4539 | static bfd_boolean |
| 4540 | som_bfd_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED, |
| 4541 | const char *name) |
| 4542 | { |
| 4543 | return name[0] == 'L' && name[1] == '$'; |
| 4544 | } |
| 4545 | |
| 4546 | /* Count or process variable-length SOM fixup records. |
| 4547 | |
| 4548 | To avoid code duplication we use this code both to compute the number |
| 4549 | of relocations requested by a stream, and to internalize the stream. |
| 4550 | |
| 4551 | When computing the number of relocations requested by a stream the |
| 4552 | variables rptr, section, and symbols have no meaning. |
| 4553 | |
| 4554 | Return the number of relocations requested by the fixup stream. When |
| 4555 | not just counting |
| 4556 | |
| 4557 | This needs at least two or three more passes to get it cleaned up. */ |
| 4558 | |
| 4559 | static unsigned int |
| 4560 | som_set_reloc_info (unsigned char *fixup, |
| 4561 | unsigned int end, |
| 4562 | arelent *internal_relocs, |
| 4563 | asection *section, |
| 4564 | asymbol **symbols, |
| 4565 | bfd_boolean just_count) |
| 4566 | { |
| 4567 | unsigned int op, varname, deallocate_contents = 0; |
| 4568 | unsigned char *end_fixups = &fixup[end]; |
| 4569 | const struct fixup_format *fp; |
| 4570 | const char *cp; |
| 4571 | unsigned char *save_fixup; |
| 4572 | int variables[26], stack[20], c, v, count, prev_fixup, *sp, saved_unwind_bits; |
| 4573 | const int *subop; |
| 4574 | arelent *rptr = internal_relocs; |
| 4575 | unsigned int offset = 0; |
| 4576 | |
| 4577 | #define var(c) variables[(c) - 'A'] |
| 4578 | #define push(v) (*sp++ = (v)) |
| 4579 | #define pop() (*--sp) |
| 4580 | #define emptystack() (sp == stack) |
| 4581 | |
| 4582 | som_initialize_reloc_queue (reloc_queue); |
| 4583 | memset (variables, 0, sizeof (variables)); |
| 4584 | memset (stack, 0, sizeof (stack)); |
| 4585 | count = 0; |
| 4586 | prev_fixup = 0; |
| 4587 | saved_unwind_bits = 0; |
| 4588 | sp = stack; |
| 4589 | |
| 4590 | while (fixup < end_fixups) |
| 4591 | { |
| 4592 | /* Save pointer to the start of this fixup. We'll use |
| 4593 | it later to determine if it is necessary to put this fixup |
| 4594 | on the queue. */ |
| 4595 | save_fixup = fixup; |
| 4596 | |
| 4597 | /* Get the fixup code and its associated format. */ |
| 4598 | op = *fixup++; |
| 4599 | fp = &som_fixup_formats[op]; |
| 4600 | |
| 4601 | /* Handle a request for a previous fixup. */ |
| 4602 | if (*fp->format == 'P') |
| 4603 | { |
| 4604 | /* Get pointer to the beginning of the prev fixup, move |
| 4605 | the repeated fixup to the head of the queue. */ |
| 4606 | fixup = reloc_queue[fp->D].reloc; |
| 4607 | som_reloc_queue_fix (reloc_queue, fp->D); |
| 4608 | prev_fixup = 1; |
| 4609 | |
| 4610 | /* Get the fixup code and its associated format. */ |
| 4611 | op = *fixup++; |
| 4612 | fp = &som_fixup_formats[op]; |
| 4613 | } |
| 4614 | |
| 4615 | /* If this fixup will be passed to BFD, set some reasonable defaults. */ |
| 4616 | if (! just_count |
| 4617 | && som_hppa_howto_table[op].type != R_NO_RELOCATION |
| 4618 | && som_hppa_howto_table[op].type != R_DATA_OVERRIDE) |
| 4619 | { |
| 4620 | rptr->address = offset; |
| 4621 | rptr->howto = &som_hppa_howto_table[op]; |
| 4622 | rptr->addend = 0; |
| 4623 | rptr->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 4624 | } |
| 4625 | |
| 4626 | /* Set default input length to 0. Get the opcode class index |
| 4627 | into D. */ |
| 4628 | var ('L') = 0; |
| 4629 | var ('D') = fp->D; |
| 4630 | var ('U') = saved_unwind_bits; |
| 4631 | |
| 4632 | /* Get the opcode format. */ |
| 4633 | cp = fp->format; |
| 4634 | |
| 4635 | /* Process the format string. Parsing happens in two phases, |
| 4636 | parse RHS, then assign to LHS. Repeat until no more |
| 4637 | characters in the format string. */ |
| 4638 | while (*cp) |
| 4639 | { |
| 4640 | /* The variable this pass is going to compute a value for. */ |
| 4641 | varname = *cp++; |
| 4642 | |
| 4643 | /* Start processing RHS. Continue until a NULL or '=' is found. */ |
| 4644 | do |
| 4645 | { |
| 4646 | c = *cp++; |
| 4647 | |
| 4648 | /* If this is a variable, push it on the stack. */ |
| 4649 | if (ISUPPER (c)) |
| 4650 | push (var (c)); |
| 4651 | |
| 4652 | /* If this is a lower case letter, then it represents |
| 4653 | additional data from the fixup stream to be pushed onto |
| 4654 | the stack. */ |
| 4655 | else if (ISLOWER (c)) |
| 4656 | { |
| 4657 | int bits = (c - 'a') * 8; |
| 4658 | for (v = 0; c > 'a'; --c) |
| 4659 | v = (v << 8) | *fixup++; |
| 4660 | if (varname == 'V') |
| 4661 | v = sign_extend (v, bits); |
| 4662 | push (v); |
| 4663 | } |
| 4664 | |
| 4665 | /* A decimal constant. Push it on the stack. */ |
| 4666 | else if (ISDIGIT (c)) |
| 4667 | { |
| 4668 | v = c - '0'; |
| 4669 | while (ISDIGIT (*cp)) |
| 4670 | v = (v * 10) + (*cp++ - '0'); |
| 4671 | push (v); |
| 4672 | } |
| 4673 | else |
| 4674 | /* An operator. Pop two two values from the stack and |
| 4675 | use them as operands to the given operation. Push |
| 4676 | the result of the operation back on the stack. */ |
| 4677 | switch (c) |
| 4678 | { |
| 4679 | case '+': |
| 4680 | v = pop (); |
| 4681 | v += pop (); |
| 4682 | push (v); |
| 4683 | break; |
| 4684 | case '*': |
| 4685 | v = pop (); |
| 4686 | v *= pop (); |
| 4687 | push (v); |
| 4688 | break; |
| 4689 | case '<': |
| 4690 | v = pop (); |
| 4691 | v = pop () << v; |
| 4692 | push (v); |
| 4693 | break; |
| 4694 | default: |
| 4695 | abort (); |
| 4696 | } |
| 4697 | } |
| 4698 | while (*cp && *cp != '='); |
| 4699 | |
| 4700 | /* Move over the equal operator. */ |
| 4701 | cp++; |
| 4702 | |
| 4703 | /* Pop the RHS off the stack. */ |
| 4704 | c = pop (); |
| 4705 | |
| 4706 | /* Perform the assignment. */ |
| 4707 | var (varname) = c; |
| 4708 | |
| 4709 | /* Handle side effects. and special 'O' stack cases. */ |
| 4710 | switch (varname) |
| 4711 | { |
| 4712 | /* Consume some bytes from the input space. */ |
| 4713 | case 'L': |
| 4714 | offset += c; |
| 4715 | break; |
| 4716 | /* A symbol to use in the relocation. Make a note |
| 4717 | of this if we are not just counting. */ |
| 4718 | case 'S': |
| 4719 | if (! just_count) |
| 4720 | rptr->sym_ptr_ptr = &symbols[c]; |
| 4721 | break; |
| 4722 | /* Argument relocation bits for a function call. */ |
| 4723 | case 'R': |
| 4724 | if (! just_count) |
| 4725 | { |
| 4726 | unsigned int tmp = var ('R'); |
| 4727 | rptr->addend = 0; |
| 4728 | |
| 4729 | if ((som_hppa_howto_table[op].type == R_PCREL_CALL |
| 4730 | && R_PCREL_CALL + 10 > op) |
| 4731 | || (som_hppa_howto_table[op].type == R_ABS_CALL |
| 4732 | && R_ABS_CALL + 10 > op)) |
| 4733 | { |
| 4734 | /* Simple encoding. */ |
| 4735 | if (tmp > 4) |
| 4736 | { |
| 4737 | tmp -= 5; |
| 4738 | rptr->addend |= 1; |
| 4739 | } |
| 4740 | if (tmp == 4) |
| 4741 | rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4 | 1 << 2; |
| 4742 | else if (tmp == 3) |
| 4743 | rptr->addend |= 1 << 8 | 1 << 6 | 1 << 4; |
| 4744 | else if (tmp == 2) |
| 4745 | rptr->addend |= 1 << 8 | 1 << 6; |
| 4746 | else if (tmp == 1) |
| 4747 | rptr->addend |= 1 << 8; |
| 4748 | } |
| 4749 | else |
| 4750 | { |
| 4751 | unsigned int tmp1, tmp2; |
| 4752 | |
| 4753 | /* First part is easy -- low order two bits are |
| 4754 | directly copied, then shifted away. */ |
| 4755 | rptr->addend = tmp & 0x3; |
| 4756 | tmp >>= 2; |
| 4757 | |
| 4758 | /* Diving the result by 10 gives us the second |
| 4759 | part. If it is 9, then the first two words |
| 4760 | are a double precision paramater, else it is |
| 4761 | 3 * the first arg bits + the 2nd arg bits. */ |
| 4762 | tmp1 = tmp / 10; |
| 4763 | tmp -= tmp1 * 10; |
| 4764 | if (tmp1 == 9) |
| 4765 | rptr->addend += (0xe << 6); |
| 4766 | else |
| 4767 | { |
| 4768 | /* Get the two pieces. */ |
| 4769 | tmp2 = tmp1 / 3; |
| 4770 | tmp1 -= tmp2 * 3; |
| 4771 | /* Put them in the addend. */ |
| 4772 | rptr->addend += (tmp2 << 8) + (tmp1 << 6); |
| 4773 | } |
| 4774 | |
| 4775 | /* What's left is the third part. It's unpacked |
| 4776 | just like the second. */ |
| 4777 | if (tmp == 9) |
| 4778 | rptr->addend += (0xe << 2); |
| 4779 | else |
| 4780 | { |
| 4781 | tmp2 = tmp / 3; |
| 4782 | tmp -= tmp2 * 3; |
| 4783 | rptr->addend += (tmp2 << 4) + (tmp << 2); |
| 4784 | } |
| 4785 | } |
| 4786 | rptr->addend = HPPA_R_ADDEND (rptr->addend, 0); |
| 4787 | } |
| 4788 | break; |
| 4789 | /* Handle the linker expression stack. */ |
| 4790 | case 'O': |
| 4791 | switch (op) |
| 4792 | { |
| 4793 | case R_COMP1: |
| 4794 | subop = comp1_opcodes; |
| 4795 | break; |
| 4796 | case R_COMP2: |
| 4797 | subop = comp2_opcodes; |
| 4798 | break; |
| 4799 | case R_COMP3: |
| 4800 | subop = comp3_opcodes; |
| 4801 | break; |
| 4802 | default: |
| 4803 | abort (); |
| 4804 | } |
| 4805 | while (*subop <= (unsigned char) c) |
| 4806 | ++subop; |
| 4807 | --subop; |
| 4808 | break; |
| 4809 | /* The lower 32unwind bits must be persistent. */ |
| 4810 | case 'U': |
| 4811 | saved_unwind_bits = var ('U'); |
| 4812 | break; |
| 4813 | |
| 4814 | default: |
| 4815 | break; |
| 4816 | } |
| 4817 | } |
| 4818 | |
| 4819 | /* If we used a previous fixup, clean up after it. */ |
| 4820 | if (prev_fixup) |
| 4821 | { |
| 4822 | fixup = save_fixup + 1; |
| 4823 | prev_fixup = 0; |
| 4824 | } |
| 4825 | /* Queue it. */ |
| 4826 | else if (fixup > save_fixup + 1) |
| 4827 | som_reloc_queue_insert (save_fixup, fixup - save_fixup, reloc_queue); |
| 4828 | |
| 4829 | /* We do not pass R_DATA_OVERRIDE or R_NO_RELOCATION |
| 4830 | fixups to BFD. */ |
| 4831 | if (som_hppa_howto_table[op].type != R_DATA_OVERRIDE |
| 4832 | && som_hppa_howto_table[op].type != R_NO_RELOCATION) |
| 4833 | { |
| 4834 | /* Done with a single reloction. Loop back to the top. */ |
| 4835 | if (! just_count) |
| 4836 | { |
| 4837 | if (som_hppa_howto_table[op].type == R_ENTRY) |
| 4838 | rptr->addend = var ('T'); |
| 4839 | else if (som_hppa_howto_table[op].type == R_EXIT) |
| 4840 | rptr->addend = var ('U'); |
| 4841 | else if (som_hppa_howto_table[op].type == R_PCREL_CALL |
| 4842 | || som_hppa_howto_table[op].type == R_ABS_CALL) |
| 4843 | ; |
| 4844 | else if (som_hppa_howto_table[op].type == R_DATA_ONE_SYMBOL) |
| 4845 | { |
| 4846 | /* Try what was specified in R_DATA_OVERRIDE first |
| 4847 | (if anything). Then the hard way using the |
| 4848 | section contents. */ |
| 4849 | rptr->addend = var ('V'); |
| 4850 | |
| 4851 | if (rptr->addend == 0 && !section->contents) |
| 4852 | { |
| 4853 | /* Got to read the damn contents first. We don't |
| 4854 | bother saving the contents (yet). Add it one |
| 4855 | day if the need arises. */ |
| 4856 | bfd_byte *contents; |
| 4857 | if (!bfd_malloc_and_get_section (section->owner, section, |
| 4858 | &contents)) |
| 4859 | { |
| 4860 | if (contents != NULL) |
| 4861 | free (contents); |
| 4862 | return (unsigned) -1; |
| 4863 | } |
| 4864 | section->contents = contents; |
| 4865 | deallocate_contents = 1; |
| 4866 | } |
| 4867 | else if (rptr->addend == 0) |
| 4868 | rptr->addend = bfd_get_32 (section->owner, |
| 4869 | (section->contents |
| 4870 | + offset - var ('L'))); |
| 4871 | |
| 4872 | } |
| 4873 | else |
| 4874 | rptr->addend = var ('V'); |
| 4875 | rptr++; |
| 4876 | } |
| 4877 | count++; |
| 4878 | /* Now that we've handled a "full" relocation, reset |
| 4879 | some state. */ |
| 4880 | memset (variables, 0, sizeof (variables)); |
| 4881 | memset (stack, 0, sizeof (stack)); |
| 4882 | } |
| 4883 | } |
| 4884 | if (deallocate_contents) |
| 4885 | free (section->contents); |
| 4886 | |
| 4887 | return count; |
| 4888 | |
| 4889 | #undef var |
| 4890 | #undef push |
| 4891 | #undef pop |
| 4892 | #undef emptystack |
| 4893 | } |
| 4894 | |
| 4895 | /* Read in the relocs (aka fixups in SOM terms) for a section. |
| 4896 | |
| 4897 | som_get_reloc_upper_bound calls this routine with JUST_COUNT |
| 4898 | set to TRUE to indicate it only needs a count of the number |
| 4899 | of actual relocations. */ |
| 4900 | |
| 4901 | static bfd_boolean |
| 4902 | som_slurp_reloc_table (bfd *abfd, |
| 4903 | asection *section, |
| 4904 | asymbol **symbols, |
| 4905 | bfd_boolean just_count) |
| 4906 | { |
| 4907 | unsigned char *external_relocs; |
| 4908 | unsigned int fixup_stream_size; |
| 4909 | arelent *internal_relocs; |
| 4910 | unsigned int num_relocs; |
| 4911 | bfd_size_type amt; |
| 4912 | |
| 4913 | fixup_stream_size = som_section_data (section)->reloc_size; |
| 4914 | /* If there were no relocations, then there is nothing to do. */ |
| 4915 | if (section->reloc_count == 0) |
| 4916 | return TRUE; |
| 4917 | |
| 4918 | /* If reloc_count is -1, then the relocation stream has not been |
| 4919 | parsed. We must do so now to know how many relocations exist. */ |
| 4920 | if (section->reloc_count == (unsigned) -1) |
| 4921 | { |
| 4922 | amt = fixup_stream_size; |
| 4923 | external_relocs = bfd_malloc (amt); |
| 4924 | if (external_relocs == NULL) |
| 4925 | return FALSE; |
| 4926 | /* Read in the external forms. */ |
| 4927 | if (bfd_seek (abfd, |
| 4928 | obj_som_reloc_filepos (abfd) + section->rel_filepos, |
| 4929 | SEEK_SET) |
| 4930 | != 0) |
| 4931 | return FALSE; |
| 4932 | if (bfd_bread (external_relocs, amt, abfd) != amt) |
| 4933 | return FALSE; |
| 4934 | |
| 4935 | /* Let callers know how many relocations found. |
| 4936 | also save the relocation stream as we will |
| 4937 | need it again. */ |
| 4938 | section->reloc_count = som_set_reloc_info (external_relocs, |
| 4939 | fixup_stream_size, |
| 4940 | NULL, NULL, NULL, TRUE); |
| 4941 | |
| 4942 | som_section_data (section)->reloc_stream = external_relocs; |
| 4943 | } |
| 4944 | |
| 4945 | /* If the caller only wanted a count, then return now. */ |
| 4946 | if (just_count) |
| 4947 | return TRUE; |
| 4948 | |
| 4949 | num_relocs = section->reloc_count; |
| 4950 | external_relocs = som_section_data (section)->reloc_stream; |
| 4951 | /* Return saved information about the relocations if it is available. */ |
| 4952 | if (section->relocation != NULL) |
| 4953 | return TRUE; |
| 4954 | |
| 4955 | amt = num_relocs; |
| 4956 | amt *= sizeof (arelent); |
| 4957 | internal_relocs = bfd_zalloc (abfd, (amt)); |
| 4958 | if (internal_relocs == NULL) |
| 4959 | return FALSE; |
| 4960 | |
| 4961 | /* Process and internalize the relocations. */ |
| 4962 | som_set_reloc_info (external_relocs, fixup_stream_size, |
| 4963 | internal_relocs, section, symbols, FALSE); |
| 4964 | |
| 4965 | /* We're done with the external relocations. Free them. */ |
| 4966 | free (external_relocs); |
| 4967 | som_section_data (section)->reloc_stream = NULL; |
| 4968 | |
| 4969 | /* Save our results and return success. */ |
| 4970 | section->relocation = internal_relocs; |
| 4971 | return TRUE; |
| 4972 | } |
| 4973 | |
| 4974 | /* Return the number of bytes required to store the relocation |
| 4975 | information associated with the given section. */ |
| 4976 | |
| 4977 | static long |
| 4978 | som_get_reloc_upper_bound (bfd *abfd, sec_ptr asect) |
| 4979 | { |
| 4980 | /* If section has relocations, then read in the relocation stream |
| 4981 | and parse it to determine how many relocations exist. */ |
| 4982 | if (asect->flags & SEC_RELOC) |
| 4983 | { |
| 4984 | if (! som_slurp_reloc_table (abfd, asect, NULL, TRUE)) |
| 4985 | return -1; |
| 4986 | return (asect->reloc_count + 1) * sizeof (arelent *); |
| 4987 | } |
| 4988 | |
| 4989 | /* There are no relocations. Return enough space to hold the |
| 4990 | NULL pointer which will be installed if som_canonicalize_reloc |
| 4991 | is called. */ |
| 4992 | return sizeof (arelent *); |
| 4993 | } |
| 4994 | |
| 4995 | /* Convert relocations from SOM (external) form into BFD internal |
| 4996 | form. Return the number of relocations. */ |
| 4997 | |
| 4998 | static long |
| 4999 | som_canonicalize_reloc (bfd *abfd, |
| 5000 | sec_ptr section, |
| 5001 | arelent **relptr, |
| 5002 | asymbol **symbols) |
| 5003 | { |
| 5004 | arelent *tblptr; |
| 5005 | int count; |
| 5006 | |
| 5007 | if (! som_slurp_reloc_table (abfd, section, symbols, FALSE)) |
| 5008 | return -1; |
| 5009 | |
| 5010 | count = section->reloc_count; |
| 5011 | tblptr = section->relocation; |
| 5012 | |
| 5013 | while (count--) |
| 5014 | *relptr++ = tblptr++; |
| 5015 | |
| 5016 | *relptr = NULL; |
| 5017 | return section->reloc_count; |
| 5018 | } |
| 5019 | |
| 5020 | extern const bfd_target som_vec; |
| 5021 | |
| 5022 | /* A hook to set up object file dependent section information. */ |
| 5023 | |
| 5024 | static bfd_boolean |
| 5025 | som_new_section_hook (bfd *abfd, asection *newsect) |
| 5026 | { |
| 5027 | if (!newsect->used_by_bfd) |
| 5028 | { |
| 5029 | bfd_size_type amt = sizeof (struct som_section_data_struct); |
| 5030 | |
| 5031 | newsect->used_by_bfd = bfd_zalloc (abfd, amt); |
| 5032 | if (!newsect->used_by_bfd) |
| 5033 | return FALSE; |
| 5034 | } |
| 5035 | newsect->alignment_power = 3; |
| 5036 | |
| 5037 | /* We allow more than three sections internally. */ |
| 5038 | return _bfd_generic_new_section_hook (abfd, newsect); |
| 5039 | } |
| 5040 | |
| 5041 | /* Copy any private info we understand from the input symbol |
| 5042 | to the output symbol. */ |
| 5043 | |
| 5044 | static bfd_boolean |
| 5045 | som_bfd_copy_private_symbol_data (bfd *ibfd, |
| 5046 | asymbol *isymbol, |
| 5047 | bfd *obfd, |
| 5048 | asymbol *osymbol) |
| 5049 | { |
| 5050 | struct som_symbol *input_symbol = (struct som_symbol *) isymbol; |
| 5051 | struct som_symbol *output_symbol = (struct som_symbol *) osymbol; |
| 5052 | |
| 5053 | /* One day we may try to grok other private data. */ |
| 5054 | if (ibfd->xvec->flavour != bfd_target_som_flavour |
| 5055 | || obfd->xvec->flavour != bfd_target_som_flavour) |
| 5056 | return FALSE; |
| 5057 | |
| 5058 | /* The only private information we need to copy is the argument relocation |
| 5059 | bits. */ |
| 5060 | output_symbol->tc_data.ap.hppa_arg_reloc = |
| 5061 | input_symbol->tc_data.ap.hppa_arg_reloc; |
| 5062 | |
| 5063 | return TRUE; |
| 5064 | } |
| 5065 | |
| 5066 | /* Copy any private info we understand from the input section |
| 5067 | to the output section. */ |
| 5068 | |
| 5069 | static bfd_boolean |
| 5070 | som_bfd_copy_private_section_data (bfd *ibfd, |
| 5071 | asection *isection, |
| 5072 | bfd *obfd, |
| 5073 | asection *osection) |
| 5074 | { |
| 5075 | bfd_size_type amt; |
| 5076 | |
| 5077 | /* One day we may try to grok other private data. */ |
| 5078 | if (ibfd->xvec->flavour != bfd_target_som_flavour |
| 5079 | || obfd->xvec->flavour != bfd_target_som_flavour |
| 5080 | || (!som_is_space (isection) && !som_is_subspace (isection))) |
| 5081 | return TRUE; |
| 5082 | |
| 5083 | amt = sizeof (struct som_copyable_section_data_struct); |
| 5084 | som_section_data (osection)->copy_data = bfd_zalloc (obfd, amt); |
| 5085 | if (som_section_data (osection)->copy_data == NULL) |
| 5086 | return FALSE; |
| 5087 | |
| 5088 | memcpy (som_section_data (osection)->copy_data, |
| 5089 | som_section_data (isection)->copy_data, |
| 5090 | sizeof (struct som_copyable_section_data_struct)); |
| 5091 | |
| 5092 | /* Reparent if necessary. */ |
| 5093 | if (som_section_data (osection)->copy_data->container) |
| 5094 | som_section_data (osection)->copy_data->container = |
| 5095 | som_section_data (osection)->copy_data->container->output_section; |
| 5096 | |
| 5097 | return TRUE; |
| 5098 | } |
| 5099 | |
| 5100 | /* Copy any private info we understand from the input bfd |
| 5101 | to the output bfd. */ |
| 5102 | |
| 5103 | static bfd_boolean |
| 5104 | som_bfd_copy_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 5105 | { |
| 5106 | /* One day we may try to grok other private data. */ |
| 5107 | if (ibfd->xvec->flavour != bfd_target_som_flavour |
| 5108 | || obfd->xvec->flavour != bfd_target_som_flavour) |
| 5109 | return TRUE; |
| 5110 | |
| 5111 | /* Allocate some memory to hold the data we need. */ |
| 5112 | obj_som_exec_data (obfd) = bfd_zalloc (obfd, (bfd_size_type) sizeof (struct som_exec_data)); |
| 5113 | if (obj_som_exec_data (obfd) == NULL) |
| 5114 | return FALSE; |
| 5115 | |
| 5116 | /* Now copy the data. */ |
| 5117 | memcpy (obj_som_exec_data (obfd), obj_som_exec_data (ibfd), |
| 5118 | sizeof (struct som_exec_data)); |
| 5119 | |
| 5120 | return TRUE; |
| 5121 | } |
| 5122 | |
| 5123 | /* Display the SOM header. */ |
| 5124 | |
| 5125 | static bfd_boolean |
| 5126 | som_bfd_print_private_bfd_data (bfd *abfd, void *farg) |
| 5127 | { |
| 5128 | struct som_exec_auxhdr *exec_header; |
| 5129 | struct aux_id* auxhdr; |
| 5130 | FILE *f; |
| 5131 | |
| 5132 | f = (FILE *) farg; |
| 5133 | |
| 5134 | exec_header = obj_som_exec_hdr (abfd); |
| 5135 | if (exec_header) |
| 5136 | { |
| 5137 | fprintf (f, _("\nExec Auxiliary Header\n")); |
| 5138 | fprintf (f, " flags "); |
| 5139 | auxhdr = &exec_header->som_auxhdr; |
| 5140 | if (auxhdr->mandatory) |
| 5141 | fprintf (f, "mandatory "); |
| 5142 | if (auxhdr->copy) |
| 5143 | fprintf (f, "copy "); |
| 5144 | if (auxhdr->append) |
| 5145 | fprintf (f, "append "); |
| 5146 | if (auxhdr->ignore) |
| 5147 | fprintf (f, "ignore "); |
| 5148 | fprintf (f, "\n"); |
| 5149 | fprintf (f, " type %#x\n", auxhdr->type); |
| 5150 | fprintf (f, " length %#x\n", auxhdr->length); |
| 5151 | |
| 5152 | /* Note that, depending on the HP-UX version, the following fields can be |
| 5153 | either ints, or longs. */ |
| 5154 | |
| 5155 | fprintf (f, " text size %#lx\n", (long) exec_header->exec_tsize); |
| 5156 | fprintf (f, " text memory offset %#lx\n", (long) exec_header->exec_tmem); |
| 5157 | fprintf (f, " text file offset %#lx\n", (long) exec_header->exec_tfile); |
| 5158 | fprintf (f, " data size %#lx\n", (long) exec_header->exec_dsize); |
| 5159 | fprintf (f, " data memory offset %#lx\n", (long) exec_header->exec_dmem); |
| 5160 | fprintf (f, " data file offset %#lx\n", (long) exec_header->exec_dfile); |
| 5161 | fprintf (f, " bss size %#lx\n", (long) exec_header->exec_bsize); |
| 5162 | fprintf (f, " entry point %#lx\n", (long) exec_header->exec_entry); |
| 5163 | fprintf (f, " loader flags %#lx\n", (long) exec_header->exec_flags); |
| 5164 | fprintf (f, " bss initializer %#lx\n", (long) exec_header->exec_bfill); |
| 5165 | } |
| 5166 | |
| 5167 | return TRUE; |
| 5168 | } |
| 5169 | |
| 5170 | /* Set backend info for sections which can not be described |
| 5171 | in the BFD data structures. */ |
| 5172 | |
| 5173 | bfd_boolean |
| 5174 | bfd_som_set_section_attributes (asection *section, |
| 5175 | int defined, |
| 5176 | int private, |
| 5177 | unsigned int sort_key, |
| 5178 | int spnum) |
| 5179 | { |
| 5180 | /* Allocate memory to hold the magic information. */ |
| 5181 | if (som_section_data (section)->copy_data == NULL) |
| 5182 | { |
| 5183 | bfd_size_type amt = sizeof (struct som_copyable_section_data_struct); |
| 5184 | |
| 5185 | som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt); |
| 5186 | if (som_section_data (section)->copy_data == NULL) |
| 5187 | return FALSE; |
| 5188 | } |
| 5189 | som_section_data (section)->copy_data->sort_key = sort_key; |
| 5190 | som_section_data (section)->copy_data->is_defined = defined; |
| 5191 | som_section_data (section)->copy_data->is_private = private; |
| 5192 | som_section_data (section)->copy_data->container = section; |
| 5193 | som_section_data (section)->copy_data->space_number = spnum; |
| 5194 | return TRUE; |
| 5195 | } |
| 5196 | |
| 5197 | /* Set backend info for subsections which can not be described |
| 5198 | in the BFD data structures. */ |
| 5199 | |
| 5200 | bfd_boolean |
| 5201 | bfd_som_set_subsection_attributes (asection *section, |
| 5202 | asection *container, |
| 5203 | int access, |
| 5204 | unsigned int sort_key, |
| 5205 | int quadrant, |
| 5206 | int comdat, |
| 5207 | int common, |
| 5208 | int dup_common) |
| 5209 | { |
| 5210 | /* Allocate memory to hold the magic information. */ |
| 5211 | if (som_section_data (section)->copy_data == NULL) |
| 5212 | { |
| 5213 | bfd_size_type amt = sizeof (struct som_copyable_section_data_struct); |
| 5214 | |
| 5215 | som_section_data (section)->copy_data = bfd_zalloc (section->owner, amt); |
| 5216 | if (som_section_data (section)->copy_data == NULL) |
| 5217 | return FALSE; |
| 5218 | } |
| 5219 | som_section_data (section)->copy_data->sort_key = sort_key; |
| 5220 | som_section_data (section)->copy_data->access_control_bits = access; |
| 5221 | som_section_data (section)->copy_data->quadrant = quadrant; |
| 5222 | som_section_data (section)->copy_data->container = container; |
| 5223 | som_section_data (section)->copy_data->is_comdat = comdat; |
| 5224 | som_section_data (section)->copy_data->is_common = common; |
| 5225 | som_section_data (section)->copy_data->dup_common = dup_common; |
| 5226 | return TRUE; |
| 5227 | } |
| 5228 | |
| 5229 | /* Set the full SOM symbol type. SOM needs far more symbol information |
| 5230 | than any other object file format I'm aware of. It is mandatory |
| 5231 | to be able to know if a symbol is an entry point, millicode, data, |
| 5232 | code, absolute, storage request, or procedure label. If you get |
| 5233 | the symbol type wrong your program will not link. */ |
| 5234 | |
| 5235 | void |
| 5236 | bfd_som_set_symbol_type (asymbol *symbol, unsigned int type) |
| 5237 | { |
| 5238 | som_symbol_data (symbol)->som_type = type; |
| 5239 | } |
| 5240 | |
| 5241 | /* Attach an auxiliary header to the BFD backend so that it may be |
| 5242 | written into the object file. */ |
| 5243 | |
| 5244 | bfd_boolean |
| 5245 | bfd_som_attach_aux_hdr (bfd *abfd, int type, char *string) |
| 5246 | { |
| 5247 | bfd_size_type amt; |
| 5248 | |
| 5249 | if (type == VERSION_AUX_ID) |
| 5250 | { |
| 5251 | size_t len = strlen (string); |
| 5252 | int pad = 0; |
| 5253 | |
| 5254 | if (len % 4) |
| 5255 | pad = (4 - (len % 4)); |
| 5256 | amt = sizeof (struct aux_id) + sizeof (unsigned int) + len + pad; |
| 5257 | obj_som_version_hdr (abfd) = bfd_zalloc (abfd, amt); |
| 5258 | if (!obj_som_version_hdr (abfd)) |
| 5259 | return FALSE; |
| 5260 | obj_som_version_hdr (abfd)->header_id.type = VERSION_AUX_ID; |
| 5261 | obj_som_version_hdr (abfd)->header_id.length = len + pad; |
| 5262 | obj_som_version_hdr (abfd)->header_id.length += sizeof (int); |
| 5263 | obj_som_version_hdr (abfd)->string_length = len; |
| 5264 | strncpy (obj_som_version_hdr (abfd)->user_string, string, len); |
| 5265 | } |
| 5266 | else if (type == COPYRIGHT_AUX_ID) |
| 5267 | { |
| 5268 | int len = strlen (string); |
| 5269 | int pad = 0; |
| 5270 | |
| 5271 | if (len % 4) |
| 5272 | pad = (4 - (len % 4)); |
| 5273 | amt = sizeof (struct aux_id) + sizeof (unsigned int) + len + pad; |
| 5274 | obj_som_copyright_hdr (abfd) = bfd_zalloc (abfd, amt); |
| 5275 | if (!obj_som_copyright_hdr (abfd)) |
| 5276 | return FALSE; |
| 5277 | obj_som_copyright_hdr (abfd)->header_id.type = COPYRIGHT_AUX_ID; |
| 5278 | obj_som_copyright_hdr (abfd)->header_id.length = len + pad; |
| 5279 | obj_som_copyright_hdr (abfd)->header_id.length += sizeof (int); |
| 5280 | obj_som_copyright_hdr (abfd)->string_length = len; |
| 5281 | strcpy (obj_som_copyright_hdr (abfd)->copyright, string); |
| 5282 | } |
| 5283 | return TRUE; |
| 5284 | } |
| 5285 | |
| 5286 | /* Attach a compilation unit header to the BFD backend so that it may be |
| 5287 | written into the object file. */ |
| 5288 | |
| 5289 | bfd_boolean |
| 5290 | bfd_som_attach_compilation_unit (bfd *abfd, |
| 5291 | const char *name, |
| 5292 | const char *language_name, |
| 5293 | const char *product_id, |
| 5294 | const char *version_id) |
| 5295 | { |
| 5296 | COMPUNIT *n = (COMPUNIT *) bfd_zalloc (abfd, (bfd_size_type) COMPUNITSZ); |
| 5297 | |
| 5298 | if (n == NULL) |
| 5299 | return FALSE; |
| 5300 | |
| 5301 | #define STRDUP(f) \ |
| 5302 | if (f != NULL) \ |
| 5303 | { \ |
| 5304 | n->f.n_name = bfd_alloc (abfd, (bfd_size_type) strlen (f) + 1); \ |
| 5305 | if (n->f.n_name == NULL) \ |
| 5306 | return FALSE; \ |
| 5307 | strcpy (n->f.n_name, f); \ |
| 5308 | } |
| 5309 | |
| 5310 | STRDUP (name); |
| 5311 | STRDUP (language_name); |
| 5312 | STRDUP (product_id); |
| 5313 | STRDUP (version_id); |
| 5314 | |
| 5315 | #undef STRDUP |
| 5316 | |
| 5317 | obj_som_compilation_unit (abfd) = n; |
| 5318 | |
| 5319 | return TRUE; |
| 5320 | } |
| 5321 | |
| 5322 | static bfd_boolean |
| 5323 | som_get_section_contents (bfd *abfd, |
| 5324 | sec_ptr section, |
| 5325 | void *location, |
| 5326 | file_ptr offset, |
| 5327 | bfd_size_type count) |
| 5328 | { |
| 5329 | if (count == 0 || ((section->flags & SEC_HAS_CONTENTS) == 0)) |
| 5330 | return TRUE; |
| 5331 | if ((bfd_size_type) (offset+count) > section->size |
| 5332 | || bfd_seek (abfd, (file_ptr) (section->filepos + offset), SEEK_SET) != 0 |
| 5333 | || bfd_bread (location, count, abfd) != count) |
| 5334 | return FALSE; /* On error. */ |
| 5335 | return TRUE; |
| 5336 | } |
| 5337 | |
| 5338 | static bfd_boolean |
| 5339 | som_set_section_contents (bfd *abfd, |
| 5340 | sec_ptr section, |
| 5341 | const void *location, |
| 5342 | file_ptr offset, |
| 5343 | bfd_size_type count) |
| 5344 | { |
| 5345 | if (! abfd->output_has_begun) |
| 5346 | { |
| 5347 | /* Set up fixed parts of the file, space, and subspace headers. |
| 5348 | Notify the world that output has begun. */ |
| 5349 | som_prep_headers (abfd); |
| 5350 | abfd->output_has_begun = TRUE; |
| 5351 | /* Start writing the object file. This include all the string |
| 5352 | tables, fixup streams, and other portions of the object file. */ |
| 5353 | som_begin_writing (abfd); |
| 5354 | } |
| 5355 | |
| 5356 | /* Only write subspaces which have "real" contents (eg. the contents |
| 5357 | are not generated at run time by the OS). */ |
| 5358 | if (!som_is_subspace (section) |
| 5359 | || ((section->flags & SEC_HAS_CONTENTS) == 0)) |
| 5360 | return TRUE; |
| 5361 | |
| 5362 | /* Seek to the proper offset within the object file and write the |
| 5363 | data. */ |
| 5364 | offset += som_section_data (section)->subspace_dict->file_loc_init_value; |
| 5365 | if (bfd_seek (abfd, offset, SEEK_SET) != 0) |
| 5366 | return FALSE; |
| 5367 | |
| 5368 | if (bfd_bwrite (location, count, abfd) != count) |
| 5369 | return FALSE; |
| 5370 | return TRUE; |
| 5371 | } |
| 5372 | |
| 5373 | static bfd_boolean |
| 5374 | som_set_arch_mach (bfd *abfd, |
| 5375 | enum bfd_architecture arch, |
| 5376 | unsigned long machine) |
| 5377 | { |
| 5378 | /* Allow any architecture to be supported by the SOM backend. */ |
| 5379 | return bfd_default_set_arch_mach (abfd, arch, machine); |
| 5380 | } |
| 5381 | |
| 5382 | static bfd_boolean |
| 5383 | som_find_nearest_line (bfd *abfd, |
| 5384 | asection *section, |
| 5385 | asymbol **symbols, |
| 5386 | bfd_vma offset, |
| 5387 | const char **filename_ptr, |
| 5388 | const char **functionname_ptr, |
| 5389 | unsigned int *line_ptr) |
| 5390 | { |
| 5391 | bfd_boolean found; |
| 5392 | asymbol *func; |
| 5393 | bfd_vma low_func; |
| 5394 | asymbol **p; |
| 5395 | |
| 5396 | if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, |
| 5397 | & found, filename_ptr, |
| 5398 | functionname_ptr, line_ptr, |
| 5399 | & somdata (abfd).line_info)) |
| 5400 | return FALSE; |
| 5401 | |
| 5402 | if (found) |
| 5403 | return TRUE; |
| 5404 | |
| 5405 | if (symbols == NULL) |
| 5406 | return FALSE; |
| 5407 | |
| 5408 | /* Fallback: find function name from symbols table. */ |
| 5409 | func = NULL; |
| 5410 | low_func = 0; |
| 5411 | |
| 5412 | for (p = symbols; *p != NULL; p++) |
| 5413 | { |
| 5414 | som_symbol_type *q = (som_symbol_type *) *p; |
| 5415 | |
| 5416 | if (q->som_type == SYMBOL_TYPE_ENTRY |
| 5417 | && q->symbol.section == section |
| 5418 | && q->symbol.value >= low_func |
| 5419 | && q->symbol.value <= offset) |
| 5420 | { |
| 5421 | func = (asymbol *) q; |
| 5422 | low_func = q->symbol.value; |
| 5423 | } |
| 5424 | } |
| 5425 | |
| 5426 | if (func == NULL) |
| 5427 | return FALSE; |
| 5428 | |
| 5429 | *filename_ptr = NULL; |
| 5430 | *functionname_ptr = bfd_asymbol_name (func); |
| 5431 | *line_ptr = 0; |
| 5432 | |
| 5433 | return TRUE; |
| 5434 | } |
| 5435 | |
| 5436 | static int |
| 5437 | som_sizeof_headers (bfd *abfd ATTRIBUTE_UNUSED, |
| 5438 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
| 5439 | { |
| 5440 | (*_bfd_error_handler) (_("som_sizeof_headers unimplemented")); |
| 5441 | fflush (stderr); |
| 5442 | abort (); |
| 5443 | return 0; |
| 5444 | } |
| 5445 | |
| 5446 | /* Return the single-character symbol type corresponding to |
| 5447 | SOM section S, or '?' for an unknown SOM section. */ |
| 5448 | |
| 5449 | static char |
| 5450 | som_section_type (const char *s) |
| 5451 | { |
| 5452 | const struct section_to_type *t; |
| 5453 | |
| 5454 | for (t = &stt[0]; t->section; t++) |
| 5455 | if (!strcmp (s, t->section)) |
| 5456 | return t->type; |
| 5457 | return '?'; |
| 5458 | } |
| 5459 | |
| 5460 | static int |
| 5461 | som_decode_symclass (asymbol *symbol) |
| 5462 | { |
| 5463 | char c; |
| 5464 | |
| 5465 | if (bfd_is_com_section (symbol->section)) |
| 5466 | return 'C'; |
| 5467 | if (bfd_is_und_section (symbol->section)) |
| 5468 | { |
| 5469 | if (symbol->flags & BSF_WEAK) |
| 5470 | { |
| 5471 | /* If weak, determine if it's specifically an object |
| 5472 | or non-object weak. */ |
| 5473 | if (symbol->flags & BSF_OBJECT) |
| 5474 | return 'v'; |
| 5475 | else |
| 5476 | return 'w'; |
| 5477 | } |
| 5478 | else |
| 5479 | return 'U'; |
| 5480 | } |
| 5481 | if (bfd_is_ind_section (symbol->section)) |
| 5482 | return 'I'; |
| 5483 | if (symbol->flags & BSF_WEAK) |
| 5484 | { |
| 5485 | /* If weak, determine if it's specifically an object |
| 5486 | or non-object weak. */ |
| 5487 | if (symbol->flags & BSF_OBJECT) |
| 5488 | return 'V'; |
| 5489 | else |
| 5490 | return 'W'; |
| 5491 | } |
| 5492 | if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL))) |
| 5493 | return '?'; |
| 5494 | |
| 5495 | if (bfd_is_abs_section (symbol->section) |
| 5496 | || (som_symbol_data (symbol) != NULL |
| 5497 | && som_symbol_data (symbol)->som_type == SYMBOL_TYPE_ABSOLUTE)) |
| 5498 | c = 'a'; |
| 5499 | else if (symbol->section) |
| 5500 | c = som_section_type (symbol->section->name); |
| 5501 | else |
| 5502 | return '?'; |
| 5503 | if (symbol->flags & BSF_GLOBAL) |
| 5504 | c = TOUPPER (c); |
| 5505 | return c; |
| 5506 | } |
| 5507 | |
| 5508 | /* Return information about SOM symbol SYMBOL in RET. */ |
| 5509 | |
| 5510 | static void |
| 5511 | som_get_symbol_info (bfd *ignore_abfd ATTRIBUTE_UNUSED, |
| 5512 | asymbol *symbol, |
| 5513 | symbol_info *ret) |
| 5514 | { |
| 5515 | ret->type = som_decode_symclass (symbol); |
| 5516 | if (ret->type != 'U') |
| 5517 | ret->value = symbol->value + symbol->section->vma; |
| 5518 | else |
| 5519 | ret->value = 0; |
| 5520 | ret->name = symbol->name; |
| 5521 | } |
| 5522 | |
| 5523 | /* Count the number of symbols in the archive symbol table. Necessary |
| 5524 | so that we can allocate space for all the carsyms at once. */ |
| 5525 | |
| 5526 | static bfd_boolean |
| 5527 | som_bfd_count_ar_symbols (bfd *abfd, |
| 5528 | struct lst_header *lst_header, |
| 5529 | symindex *count) |
| 5530 | { |
| 5531 | unsigned int i; |
| 5532 | unsigned int *hash_table = NULL; |
| 5533 | bfd_size_type amt; |
| 5534 | file_ptr lst_filepos = bfd_tell (abfd) - sizeof (struct lst_header); |
| 5535 | |
| 5536 | amt = lst_header->hash_size; |
| 5537 | amt *= sizeof (unsigned int); |
| 5538 | hash_table = bfd_malloc (amt); |
| 5539 | if (hash_table == NULL && lst_header->hash_size != 0) |
| 5540 | goto error_return; |
| 5541 | |
| 5542 | /* Don't forget to initialize the counter! */ |
| 5543 | *count = 0; |
| 5544 | |
| 5545 | /* Read in the hash table. The has table is an array of 32bit file offsets |
| 5546 | which point to the hash chains. */ |
| 5547 | if (bfd_bread ((void *) hash_table, amt, abfd) != amt) |
| 5548 | goto error_return; |
| 5549 | |
| 5550 | /* Walk each chain counting the number of symbols found on that particular |
| 5551 | chain. */ |
| 5552 | for (i = 0; i < lst_header->hash_size; i++) |
| 5553 | { |
| 5554 | struct lst_symbol_record lst_symbol; |
| 5555 | |
| 5556 | /* An empty chain has zero as it's file offset. */ |
| 5557 | if (hash_table[i] == 0) |
| 5558 | continue; |
| 5559 | |
| 5560 | /* Seek to the first symbol in this hash chain. */ |
| 5561 | if (bfd_seek (abfd, lst_filepos + hash_table[i], SEEK_SET) != 0) |
| 5562 | goto error_return; |
| 5563 | |
| 5564 | /* Read in this symbol and update the counter. */ |
| 5565 | amt = sizeof (lst_symbol); |
| 5566 | if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt) |
| 5567 | goto error_return; |
| 5568 | |
| 5569 | (*count)++; |
| 5570 | |
| 5571 | /* Now iterate through the rest of the symbols on this chain. */ |
| 5572 | while (lst_symbol.next_entry) |
| 5573 | { |
| 5574 | |
| 5575 | /* Seek to the next symbol. */ |
| 5576 | if (bfd_seek (abfd, lst_filepos + lst_symbol.next_entry, SEEK_SET) |
| 5577 | != 0) |
| 5578 | goto error_return; |
| 5579 | |
| 5580 | /* Read the symbol in and update the counter. */ |
| 5581 | amt = sizeof (lst_symbol); |
| 5582 | if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt) |
| 5583 | goto error_return; |
| 5584 | |
| 5585 | (*count)++; |
| 5586 | } |
| 5587 | } |
| 5588 | if (hash_table != NULL) |
| 5589 | free (hash_table); |
| 5590 | return TRUE; |
| 5591 | |
| 5592 | error_return: |
| 5593 | if (hash_table != NULL) |
| 5594 | free (hash_table); |
| 5595 | return FALSE; |
| 5596 | } |
| 5597 | |
| 5598 | /* Fill in the canonical archive symbols (SYMS) from the archive described |
| 5599 | by ABFD and LST_HEADER. */ |
| 5600 | |
| 5601 | static bfd_boolean |
| 5602 | som_bfd_fill_in_ar_symbols (bfd *abfd, |
| 5603 | struct lst_header *lst_header, |
| 5604 | carsym **syms) |
| 5605 | { |
| 5606 | unsigned int i, len; |
| 5607 | carsym *set = syms[0]; |
| 5608 | unsigned int *hash_table = NULL; |
| 5609 | struct som_entry *som_dict = NULL; |
| 5610 | bfd_size_type amt; |
| 5611 | file_ptr lst_filepos = bfd_tell (abfd) - sizeof (struct lst_header); |
| 5612 | |
| 5613 | amt = lst_header->hash_size; |
| 5614 | amt *= sizeof (unsigned int); |
| 5615 | hash_table = bfd_malloc (amt); |
| 5616 | if (hash_table == NULL && lst_header->hash_size != 0) |
| 5617 | goto error_return; |
| 5618 | |
| 5619 | /* Read in the hash table. The has table is an array of 32bit file offsets |
| 5620 | which point to the hash chains. */ |
| 5621 | if (bfd_bread ((void *) hash_table, amt, abfd) != amt) |
| 5622 | goto error_return; |
| 5623 | |
| 5624 | /* Seek to and read in the SOM dictionary. We will need this to fill |
| 5625 | in the carsym's filepos field. */ |
| 5626 | if (bfd_seek (abfd, lst_filepos + lst_header->dir_loc, SEEK_SET) != 0) |
| 5627 | goto error_return; |
| 5628 | |
| 5629 | amt = lst_header->module_count; |
| 5630 | amt *= sizeof (struct som_entry); |
| 5631 | som_dict = bfd_malloc (amt); |
| 5632 | if (som_dict == NULL && lst_header->module_count != 0) |
| 5633 | goto error_return; |
| 5634 | |
| 5635 | if (bfd_bread ((void *) som_dict, amt, abfd) != amt) |
| 5636 | goto error_return; |
| 5637 | |
| 5638 | /* Walk each chain filling in the carsyms as we go along. */ |
| 5639 | for (i = 0; i < lst_header->hash_size; i++) |
| 5640 | { |
| 5641 | struct lst_symbol_record lst_symbol; |
| 5642 | |
| 5643 | /* An empty chain has zero as it's file offset. */ |
| 5644 | if (hash_table[i] == 0) |
| 5645 | continue; |
| 5646 | |
| 5647 | /* Seek to and read the first symbol on the chain. */ |
| 5648 | if (bfd_seek (abfd, lst_filepos + hash_table[i], SEEK_SET) != 0) |
| 5649 | goto error_return; |
| 5650 | |
| 5651 | amt = sizeof (lst_symbol); |
| 5652 | if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt) |
| 5653 | goto error_return; |
| 5654 | |
| 5655 | /* Get the name of the symbol, first get the length which is stored |
| 5656 | as a 32bit integer just before the symbol. |
| 5657 | |
| 5658 | One might ask why we don't just read in the entire string table |
| 5659 | and index into it. Well, according to the SOM ABI the string |
| 5660 | index can point *anywhere* in the archive to save space, so just |
| 5661 | using the string table would not be safe. */ |
| 5662 | if (bfd_seek (abfd, lst_filepos + lst_header->string_loc |
| 5663 | + lst_symbol.name.n_strx - 4, SEEK_SET) != 0) |
| 5664 | goto error_return; |
| 5665 | |
| 5666 | if (bfd_bread (&len, (bfd_size_type) 4, abfd) != 4) |
| 5667 | goto error_return; |
| 5668 | |
| 5669 | /* Allocate space for the name and null terminate it too. */ |
| 5670 | set->name = bfd_zalloc (abfd, (bfd_size_type) len + 1); |
| 5671 | if (!set->name) |
| 5672 | goto error_return; |
| 5673 | if (bfd_bread (set->name, (bfd_size_type) len, abfd) != len) |
| 5674 | goto error_return; |
| 5675 | |
| 5676 | set->name[len] = 0; |
| 5677 | |
| 5678 | /* Fill in the file offset. Note that the "location" field points |
| 5679 | to the SOM itself, not the ar_hdr in front of it. */ |
| 5680 | set->file_offset = som_dict[lst_symbol.som_index].location |
| 5681 | - sizeof (struct ar_hdr); |
| 5682 | |
| 5683 | /* Go to the next symbol. */ |
| 5684 | set++; |
| 5685 | |
| 5686 | /* Iterate through the rest of the chain. */ |
| 5687 | while (lst_symbol.next_entry) |
| 5688 | { |
| 5689 | /* Seek to the next symbol and read it in. */ |
| 5690 | if (bfd_seek (abfd, lst_filepos + lst_symbol.next_entry, SEEK_SET) |
| 5691 | != 0) |
| 5692 | goto error_return; |
| 5693 | |
| 5694 | amt = sizeof (lst_symbol); |
| 5695 | if (bfd_bread ((void *) &lst_symbol, amt, abfd) != amt) |
| 5696 | goto error_return; |
| 5697 | |
| 5698 | /* Seek to the name length & string and read them in. */ |
| 5699 | if (bfd_seek (abfd, lst_filepos + lst_header->string_loc |
| 5700 | + lst_symbol.name.n_strx - 4, SEEK_SET) != 0) |
| 5701 | goto error_return; |
| 5702 | |
| 5703 | if (bfd_bread (&len, (bfd_size_type) 4, abfd) != 4) |
| 5704 | goto error_return; |
| 5705 | |
| 5706 | /* Allocate space for the name and null terminate it too. */ |
| 5707 | set->name = bfd_zalloc (abfd, (bfd_size_type) len + 1); |
| 5708 | if (!set->name) |
| 5709 | goto error_return; |
| 5710 | |
| 5711 | if (bfd_bread (set->name, (bfd_size_type) len, abfd) != len) |
| 5712 | goto error_return; |
| 5713 | set->name[len] = 0; |
| 5714 | |
| 5715 | /* Fill in the file offset. Note that the "location" field points |
| 5716 | to the SOM itself, not the ar_hdr in front of it. */ |
| 5717 | set->file_offset = som_dict[lst_symbol.som_index].location |
| 5718 | - sizeof (struct ar_hdr); |
| 5719 | |
| 5720 | /* Go on to the next symbol. */ |
| 5721 | set++; |
| 5722 | } |
| 5723 | } |
| 5724 | /* If we haven't died by now, then we successfully read the entire |
| 5725 | archive symbol table. */ |
| 5726 | if (hash_table != NULL) |
| 5727 | free (hash_table); |
| 5728 | if (som_dict != NULL) |
| 5729 | free (som_dict); |
| 5730 | return TRUE; |
| 5731 | |
| 5732 | error_return: |
| 5733 | if (hash_table != NULL) |
| 5734 | free (hash_table); |
| 5735 | if (som_dict != NULL) |
| 5736 | free (som_dict); |
| 5737 | return FALSE; |
| 5738 | } |
| 5739 | |
| 5740 | /* Read in the LST from the archive. */ |
| 5741 | |
| 5742 | static bfd_boolean |
| 5743 | som_slurp_armap (bfd *abfd) |
| 5744 | { |
| 5745 | struct lst_header lst_header; |
| 5746 | struct ar_hdr ar_header; |
| 5747 | unsigned int parsed_size; |
| 5748 | struct artdata *ardata = bfd_ardata (abfd); |
| 5749 | char nextname[17]; |
| 5750 | bfd_size_type amt = 16; |
| 5751 | int i = bfd_bread ((void *) nextname, amt, abfd); |
| 5752 | |
| 5753 | /* Special cases. */ |
| 5754 | if (i == 0) |
| 5755 | return TRUE; |
| 5756 | if (i != 16) |
| 5757 | return FALSE; |
| 5758 | |
| 5759 | if (bfd_seek (abfd, (file_ptr) -16, SEEK_CUR) != 0) |
| 5760 | return FALSE; |
| 5761 | |
| 5762 | /* For archives without .o files there is no symbol table. */ |
| 5763 | if (! CONST_STRNEQ (nextname, "/ ")) |
| 5764 | { |
| 5765 | bfd_has_map (abfd) = FALSE; |
| 5766 | return TRUE; |
| 5767 | } |
| 5768 | |
| 5769 | /* Read in and sanity check the archive header. */ |
| 5770 | amt = sizeof (struct ar_hdr); |
| 5771 | if (bfd_bread ((void *) &ar_header, amt, abfd) != amt) |
| 5772 | return FALSE; |
| 5773 | |
| 5774 | if (strncmp (ar_header.ar_fmag, ARFMAG, 2)) |
| 5775 | { |
| 5776 | bfd_set_error (bfd_error_malformed_archive); |
| 5777 | return FALSE; |
| 5778 | } |
| 5779 | |
| 5780 | /* How big is the archive symbol table entry? */ |
| 5781 | errno = 0; |
| 5782 | parsed_size = strtol (ar_header.ar_size, NULL, 10); |
| 5783 | if (errno != 0) |
| 5784 | { |
| 5785 | bfd_set_error (bfd_error_malformed_archive); |
| 5786 | return FALSE; |
| 5787 | } |
| 5788 | |
| 5789 | /* Save off the file offset of the first real user data. */ |
| 5790 | ardata->first_file_filepos = bfd_tell (abfd) + parsed_size; |
| 5791 | |
| 5792 | /* Read in the library symbol table. We'll make heavy use of this |
| 5793 | in just a minute. */ |
| 5794 | amt = sizeof (struct lst_header); |
| 5795 | if (bfd_bread ((void *) &lst_header, amt, abfd) != amt) |
| 5796 | return FALSE; |
| 5797 | |
| 5798 | /* Sanity check. */ |
| 5799 | if (lst_header.a_magic != LIBMAGIC) |
| 5800 | { |
| 5801 | bfd_set_error (bfd_error_malformed_archive); |
| 5802 | return FALSE; |
| 5803 | } |
| 5804 | |
| 5805 | /* Count the number of symbols in the library symbol table. */ |
| 5806 | if (! som_bfd_count_ar_symbols (abfd, &lst_header, &ardata->symdef_count)) |
| 5807 | return FALSE; |
| 5808 | |
| 5809 | /* Get back to the start of the library symbol table. */ |
| 5810 | if (bfd_seek (abfd, (ardata->first_file_filepos - parsed_size |
| 5811 | + sizeof (struct lst_header)), SEEK_SET) != 0) |
| 5812 | return FALSE; |
| 5813 | |
| 5814 | /* Initialize the cache and allocate space for the library symbols. */ |
| 5815 | ardata->cache = 0; |
| 5816 | amt = ardata->symdef_count; |
| 5817 | amt *= sizeof (carsym); |
| 5818 | ardata->symdefs = bfd_alloc (abfd, amt); |
| 5819 | if (!ardata->symdefs) |
| 5820 | return FALSE; |
| 5821 | |
| 5822 | /* Now fill in the canonical archive symbols. */ |
| 5823 | if (! som_bfd_fill_in_ar_symbols (abfd, &lst_header, &ardata->symdefs)) |
| 5824 | return FALSE; |
| 5825 | |
| 5826 | /* Seek back to the "first" file in the archive. Note the "first" |
| 5827 | file may be the extended name table. */ |
| 5828 | if (bfd_seek (abfd, ardata->first_file_filepos, SEEK_SET) != 0) |
| 5829 | return FALSE; |
| 5830 | |
| 5831 | /* Notify the generic archive code that we have a symbol map. */ |
| 5832 | bfd_has_map (abfd) = TRUE; |
| 5833 | return TRUE; |
| 5834 | } |
| 5835 | |
| 5836 | /* Begin preparing to write a SOM library symbol table. |
| 5837 | |
| 5838 | As part of the prep work we need to determine the number of symbols |
| 5839 | and the size of the associated string section. */ |
| 5840 | |
| 5841 | static bfd_boolean |
| 5842 | som_bfd_prep_for_ar_write (bfd *abfd, |
| 5843 | unsigned int *num_syms, |
| 5844 | unsigned int *stringsize) |
| 5845 | { |
| 5846 | bfd *curr_bfd = abfd->archive_head; |
| 5847 | |
| 5848 | /* Some initialization. */ |
| 5849 | *num_syms = 0; |
| 5850 | *stringsize = 0; |
| 5851 | |
| 5852 | /* Iterate over each BFD within this archive. */ |
| 5853 | while (curr_bfd != NULL) |
| 5854 | { |
| 5855 | unsigned int curr_count, i; |
| 5856 | som_symbol_type *sym; |
| 5857 | |
| 5858 | /* Don't bother for non-SOM objects. */ |
| 5859 | if (curr_bfd->format != bfd_object |
| 5860 | || curr_bfd->xvec->flavour != bfd_target_som_flavour) |
| 5861 | { |
| 5862 | curr_bfd = curr_bfd->archive_next; |
| 5863 | continue; |
| 5864 | } |
| 5865 | |
| 5866 | /* Make sure the symbol table has been read, then snag a pointer |
| 5867 | to it. It's a little slimey to grab the symbols via obj_som_symtab, |
| 5868 | but doing so avoids allocating lots of extra memory. */ |
| 5869 | if (! som_slurp_symbol_table (curr_bfd)) |
| 5870 | return FALSE; |
| 5871 | |
| 5872 | sym = obj_som_symtab (curr_bfd); |
| 5873 | curr_count = bfd_get_symcount (curr_bfd); |
| 5874 | |
| 5875 | /* Examine each symbol to determine if it belongs in the |
| 5876 | library symbol table. */ |
| 5877 | for (i = 0; i < curr_count; i++, sym++) |
| 5878 | { |
| 5879 | struct som_misc_symbol_info info; |
| 5880 | |
| 5881 | /* Derive SOM information from the BFD symbol. */ |
| 5882 | som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info); |
| 5883 | |
| 5884 | /* Should we include this symbol? */ |
| 5885 | if (info.symbol_type == ST_NULL |
| 5886 | || info.symbol_type == ST_SYM_EXT |
| 5887 | || info.symbol_type == ST_ARG_EXT) |
| 5888 | continue; |
| 5889 | |
| 5890 | /* Only global symbols and unsatisfied commons. */ |
| 5891 | if (info.symbol_scope != SS_UNIVERSAL |
| 5892 | && info.symbol_type != ST_STORAGE) |
| 5893 | continue; |
| 5894 | |
| 5895 | /* Do no include undefined symbols. */ |
| 5896 | if (bfd_is_und_section (sym->symbol.section)) |
| 5897 | continue; |
| 5898 | |
| 5899 | /* Bump the various counters, being careful to honor |
| 5900 | alignment considerations in the string table. */ |
| 5901 | (*num_syms)++; |
| 5902 | *stringsize = *stringsize + strlen (sym->symbol.name) + 5; |
| 5903 | while (*stringsize % 4) |
| 5904 | (*stringsize)++; |
| 5905 | } |
| 5906 | |
| 5907 | curr_bfd = curr_bfd->archive_next; |
| 5908 | } |
| 5909 | return TRUE; |
| 5910 | } |
| 5911 | |
| 5912 | /* Hash a symbol name based on the hashing algorithm presented in the |
| 5913 | SOM ABI. */ |
| 5914 | |
| 5915 | static unsigned int |
| 5916 | som_bfd_ar_symbol_hash (asymbol *symbol) |
| 5917 | { |
| 5918 | unsigned int len = strlen (symbol->name); |
| 5919 | |
| 5920 | /* Names with length 1 are special. */ |
| 5921 | if (len == 1) |
| 5922 | return 0x1000100 | (symbol->name[0] << 16) | symbol->name[0]; |
| 5923 | |
| 5924 | return ((len & 0x7f) << 24) | (symbol->name[1] << 16) |
| 5925 | | (symbol->name[len - 2] << 8) | symbol->name[len - 1]; |
| 5926 | } |
| 5927 | |
| 5928 | /* Do the bulk of the work required to write the SOM library |
| 5929 | symbol table. */ |
| 5930 | |
| 5931 | static bfd_boolean |
| 5932 | som_bfd_ar_write_symbol_stuff (bfd *abfd, |
| 5933 | unsigned int nsyms, |
| 5934 | unsigned int string_size, |
| 5935 | struct lst_header lst, |
| 5936 | unsigned elength) |
| 5937 | { |
| 5938 | file_ptr lst_filepos; |
| 5939 | char *strings = NULL, *p; |
| 5940 | struct lst_symbol_record *lst_syms = NULL, *curr_lst_sym; |
| 5941 | bfd *curr_bfd; |
| 5942 | unsigned int *hash_table = NULL; |
| 5943 | struct som_entry *som_dict = NULL; |
| 5944 | struct lst_symbol_record **last_hash_entry = NULL; |
| 5945 | unsigned int curr_som_offset, som_index = 0; |
| 5946 | bfd_size_type amt; |
| 5947 | |
| 5948 | amt = lst.hash_size; |
| 5949 | amt *= sizeof (unsigned int); |
| 5950 | hash_table = bfd_zmalloc (amt); |
| 5951 | if (hash_table == NULL && lst.hash_size != 0) |
| 5952 | goto error_return; |
| 5953 | |
| 5954 | amt = lst.module_count; |
| 5955 | amt *= sizeof (struct som_entry); |
| 5956 | som_dict = bfd_zmalloc (amt); |
| 5957 | if (som_dict == NULL && lst.module_count != 0) |
| 5958 | goto error_return; |
| 5959 | |
| 5960 | amt = lst.hash_size; |
| 5961 | amt *= sizeof (struct lst_symbol_record *); |
| 5962 | last_hash_entry = bfd_zmalloc (amt); |
| 5963 | if (last_hash_entry == NULL && lst.hash_size != 0) |
| 5964 | goto error_return; |
| 5965 | |
| 5966 | /* Lots of fields are file positions relative to the start |
| 5967 | of the lst record. So save its location. */ |
| 5968 | lst_filepos = bfd_tell (abfd) - sizeof (struct lst_header); |
| 5969 | |
| 5970 | /* Symbols have som_index fields, so we have to keep track of the |
| 5971 | index of each SOM in the archive. |
| 5972 | |
| 5973 | The SOM dictionary has (among other things) the absolute file |
| 5974 | position for the SOM which a particular dictionary entry |
| 5975 | describes. We have to compute that information as we iterate |
| 5976 | through the SOMs/symbols. */ |
| 5977 | som_index = 0; |
| 5978 | |
| 5979 | /* We add in the size of the archive header twice as the location |
| 5980 | in the SOM dictionary is the actual offset of the SOM, not the |
| 5981 | archive header before the SOM. */ |
| 5982 | curr_som_offset = 8 + 2 * sizeof (struct ar_hdr) + lst.file_end; |
| 5983 | |
| 5984 | /* Make room for the archive header and the contents of the |
| 5985 | extended string table. Note that elength includes the size |
| 5986 | of the archive header for the extended name table! */ |
| 5987 | if (elength) |
| 5988 | curr_som_offset += elength; |
| 5989 | |
| 5990 | /* Make sure we're properly aligned. */ |
| 5991 | curr_som_offset = (curr_som_offset + 0x1) & ~0x1; |
| 5992 | |
| 5993 | /* FIXME should be done with buffers just like everything else... */ |
| 5994 | amt = nsyms; |
| 5995 | amt *= sizeof (struct lst_symbol_record); |
| 5996 | lst_syms = bfd_malloc (amt); |
| 5997 | if (lst_syms == NULL && nsyms != 0) |
| 5998 | goto error_return; |
| 5999 | strings = bfd_malloc ((bfd_size_type) string_size); |
| 6000 | if (strings == NULL && string_size != 0) |
| 6001 | goto error_return; |
| 6002 | |
| 6003 | p = strings; |
| 6004 | curr_lst_sym = lst_syms; |
| 6005 | |
| 6006 | curr_bfd = abfd->archive_head; |
| 6007 | while (curr_bfd != NULL) |
| 6008 | { |
| 6009 | unsigned int curr_count, i; |
| 6010 | som_symbol_type *sym; |
| 6011 | |
| 6012 | /* Don't bother for non-SOM objects. */ |
| 6013 | if (curr_bfd->format != bfd_object |
| 6014 | || curr_bfd->xvec->flavour != bfd_target_som_flavour) |
| 6015 | { |
| 6016 | curr_bfd = curr_bfd->archive_next; |
| 6017 | continue; |
| 6018 | } |
| 6019 | |
| 6020 | /* Make sure the symbol table has been read, then snag a pointer |
| 6021 | to it. It's a little slimey to grab the symbols via obj_som_symtab, |
| 6022 | but doing so avoids allocating lots of extra memory. */ |
| 6023 | if (! som_slurp_symbol_table (curr_bfd)) |
| 6024 | goto error_return; |
| 6025 | |
| 6026 | sym = obj_som_symtab (curr_bfd); |
| 6027 | curr_count = bfd_get_symcount (curr_bfd); |
| 6028 | |
| 6029 | for (i = 0; i < curr_count; i++, sym++) |
| 6030 | { |
| 6031 | struct som_misc_symbol_info info; |
| 6032 | |
| 6033 | /* Derive SOM information from the BFD symbol. */ |
| 6034 | som_bfd_derive_misc_symbol_info (curr_bfd, &sym->symbol, &info); |
| 6035 | |
| 6036 | /* Should we include this symbol? */ |
| 6037 | if (info.symbol_type == ST_NULL |
| 6038 | || info.symbol_type == ST_SYM_EXT |
| 6039 | || info.symbol_type == ST_ARG_EXT) |
| 6040 | continue; |
| 6041 | |
| 6042 | /* Only global symbols and unsatisfied commons. */ |
| 6043 | if (info.symbol_scope != SS_UNIVERSAL |
| 6044 | && info.symbol_type != ST_STORAGE) |
| 6045 | continue; |
| 6046 | |
| 6047 | /* Do no include undefined symbols. */ |
| 6048 | if (bfd_is_und_section (sym->symbol.section)) |
| 6049 | continue; |
| 6050 | |
| 6051 | /* If this is the first symbol from this SOM, then update |
| 6052 | the SOM dictionary too. */ |
| 6053 | if (som_dict[som_index].location == 0) |
| 6054 | { |
| 6055 | som_dict[som_index].location = curr_som_offset; |
| 6056 | som_dict[som_index].length = arelt_size (curr_bfd); |
| 6057 | } |
| 6058 | |
| 6059 | /* Fill in the lst symbol record. */ |
| 6060 | curr_lst_sym->hidden = 0; |
| 6061 | curr_lst_sym->secondary_def = info.secondary_def; |
| 6062 | curr_lst_sym->symbol_type = info.symbol_type; |
| 6063 | curr_lst_sym->symbol_scope = info.symbol_scope; |
| 6064 | curr_lst_sym->check_level = 0; |
| 6065 | curr_lst_sym->must_qualify = 0; |
| 6066 | curr_lst_sym->initially_frozen = 0; |
| 6067 | curr_lst_sym->memory_resident = 0; |
| 6068 | curr_lst_sym->is_common = bfd_is_com_section (sym->symbol.section); |
| 6069 | curr_lst_sym->dup_common = info.dup_common; |
| 6070 | curr_lst_sym->xleast = 3; |
| 6071 | curr_lst_sym->arg_reloc = info.arg_reloc; |
| 6072 | curr_lst_sym->name.n_strx = p - strings + 4; |
| 6073 | curr_lst_sym->qualifier_name.n_strx = 0; |
| 6074 | curr_lst_sym->symbol_info = info.symbol_info; |
| 6075 | curr_lst_sym->symbol_value = info.symbol_value | info.priv_level; |
| 6076 | curr_lst_sym->symbol_descriptor = 0; |
| 6077 | curr_lst_sym->reserved = 0; |
| 6078 | curr_lst_sym->som_index = som_index; |
| 6079 | curr_lst_sym->symbol_key = som_bfd_ar_symbol_hash (&sym->symbol); |
| 6080 | curr_lst_sym->next_entry = 0; |
| 6081 | |
| 6082 | /* Insert into the hash table. */ |
| 6083 | if (hash_table[curr_lst_sym->symbol_key % lst.hash_size]) |
| 6084 | { |
| 6085 | struct lst_symbol_record *tmp; |
| 6086 | |
| 6087 | /* There is already something at the head of this hash chain, |
| 6088 | so tack this symbol onto the end of the chain. */ |
| 6089 | tmp = last_hash_entry[curr_lst_sym->symbol_key % lst.hash_size]; |
| 6090 | tmp->next_entry |
| 6091 | = (curr_lst_sym - lst_syms) * sizeof (struct lst_symbol_record) |
| 6092 | + lst.hash_size * 4 |
| 6093 | + lst.module_count * sizeof (struct som_entry) |
| 6094 | + sizeof (struct lst_header); |
| 6095 | } |
| 6096 | else |
| 6097 | /* First entry in this hash chain. */ |
| 6098 | hash_table[curr_lst_sym->symbol_key % lst.hash_size] |
| 6099 | = (curr_lst_sym - lst_syms) * sizeof (struct lst_symbol_record) |
| 6100 | + lst.hash_size * 4 |
| 6101 | + lst.module_count * sizeof (struct som_entry) |
| 6102 | + sizeof (struct lst_header); |
| 6103 | |
| 6104 | /* Keep track of the last symbol we added to this chain so we can |
| 6105 | easily update its next_entry pointer. */ |
| 6106 | last_hash_entry[curr_lst_sym->symbol_key % lst.hash_size] |
| 6107 | = curr_lst_sym; |
| 6108 | |
| 6109 | /* Update the string table. */ |
| 6110 | bfd_put_32 (abfd, strlen (sym->symbol.name), p); |
| 6111 | p += 4; |
| 6112 | strcpy (p, sym->symbol.name); |
| 6113 | p += strlen (sym->symbol.name) + 1; |
| 6114 | while ((int) p % 4) |
| 6115 | { |
| 6116 | bfd_put_8 (abfd, 0, p); |
| 6117 | p++; |
| 6118 | } |
| 6119 | |
| 6120 | /* Head to the next symbol. */ |
| 6121 | curr_lst_sym++; |
| 6122 | } |
| 6123 | |
| 6124 | /* Keep track of where each SOM will finally reside; then look |
| 6125 | at the next BFD. */ |
| 6126 | curr_som_offset += arelt_size (curr_bfd) + sizeof (struct ar_hdr); |
| 6127 | |
| 6128 | /* A particular object in the archive may have an odd length; the |
| 6129 | linker requires objects begin on an even boundary. So round |
| 6130 | up the current offset as necessary. */ |
| 6131 | curr_som_offset = (curr_som_offset + 0x1) &~ (unsigned) 1; |
| 6132 | curr_bfd = curr_bfd->archive_next; |
| 6133 | som_index++; |
| 6134 | } |
| 6135 | |
| 6136 | /* Now scribble out the hash table. */ |
| 6137 | amt = lst.hash_size * 4; |
| 6138 | if (bfd_bwrite ((void *) hash_table, amt, abfd) != amt) |
| 6139 | goto error_return; |
| 6140 | |
| 6141 | /* Then the SOM dictionary. */ |
| 6142 | amt = lst.module_count * sizeof (struct som_entry); |
| 6143 | if (bfd_bwrite ((void *) som_dict, amt, abfd) != amt) |
| 6144 | goto error_return; |
| 6145 | |
| 6146 | /* The library symbols. */ |
| 6147 | amt = nsyms * sizeof (struct lst_symbol_record); |
| 6148 | if (bfd_bwrite ((void *) lst_syms, amt, abfd) != amt) |
| 6149 | goto error_return; |
| 6150 | |
| 6151 | /* And finally the strings. */ |
| 6152 | amt = string_size; |
| 6153 | if (bfd_bwrite ((void *) strings, amt, abfd) != amt) |
| 6154 | goto error_return; |
| 6155 | |
| 6156 | if (hash_table != NULL) |
| 6157 | free (hash_table); |
| 6158 | if (som_dict != NULL) |
| 6159 | free (som_dict); |
| 6160 | if (last_hash_entry != NULL) |
| 6161 | free (last_hash_entry); |
| 6162 | if (lst_syms != NULL) |
| 6163 | free (lst_syms); |
| 6164 | if (strings != NULL) |
| 6165 | free (strings); |
| 6166 | return TRUE; |
| 6167 | |
| 6168 | error_return: |
| 6169 | if (hash_table != NULL) |
| 6170 | free (hash_table); |
| 6171 | if (som_dict != NULL) |
| 6172 | free (som_dict); |
| 6173 | if (last_hash_entry != NULL) |
| 6174 | free (last_hash_entry); |
| 6175 | if (lst_syms != NULL) |
| 6176 | free (lst_syms); |
| 6177 | if (strings != NULL) |
| 6178 | free (strings); |
| 6179 | |
| 6180 | return FALSE; |
| 6181 | } |
| 6182 | |
| 6183 | /* Write out the LST for the archive. |
| 6184 | |
| 6185 | You'll never believe this is really how armaps are handled in SOM... */ |
| 6186 | |
| 6187 | static bfd_boolean |
| 6188 | som_write_armap (bfd *abfd, |
| 6189 | unsigned int elength, |
| 6190 | struct orl *map ATTRIBUTE_UNUSED, |
| 6191 | unsigned int orl_count ATTRIBUTE_UNUSED, |
| 6192 | int stridx ATTRIBUTE_UNUSED) |
| 6193 | { |
| 6194 | bfd *curr_bfd; |
| 6195 | struct stat statbuf; |
| 6196 | unsigned int i, lst_size, nsyms, stringsize; |
| 6197 | struct ar_hdr hdr; |
| 6198 | struct lst_header lst; |
| 6199 | int *p; |
| 6200 | bfd_size_type amt; |
| 6201 | |
| 6202 | /* We'll use this for the archive's date and mode later. */ |
| 6203 | if (stat (abfd->filename, &statbuf) != 0) |
| 6204 | { |
| 6205 | bfd_set_error (bfd_error_system_call); |
| 6206 | return FALSE; |
| 6207 | } |
| 6208 | /* Fudge factor. */ |
| 6209 | bfd_ardata (abfd)->armap_timestamp = statbuf.st_mtime + 60; |
| 6210 | |
| 6211 | /* Account for the lst header first. */ |
| 6212 | lst_size = sizeof (struct lst_header); |
| 6213 | |
| 6214 | /* Start building the LST header. */ |
| 6215 | /* FIXME: Do we need to examine each element to determine the |
| 6216 | largest id number? */ |
| 6217 | lst.system_id = CPU_PA_RISC1_0; |
| 6218 | lst.a_magic = LIBMAGIC; |
| 6219 | lst.version_id = VERSION_ID; |
| 6220 | lst.file_time.secs = 0; |
| 6221 | lst.file_time.nanosecs = 0; |
| 6222 | |
| 6223 | lst.hash_loc = lst_size; |
| 6224 | lst.hash_size = SOM_LST_HASH_SIZE; |
| 6225 | |
| 6226 | /* Hash table is a SOM_LST_HASH_SIZE 32bit offsets. */ |
| 6227 | lst_size += 4 * SOM_LST_HASH_SIZE; |
| 6228 | |
| 6229 | /* We need to count the number of SOMs in this archive. */ |
| 6230 | curr_bfd = abfd->archive_head; |
| 6231 | lst.module_count = 0; |
| 6232 | while (curr_bfd != NULL) |
| 6233 | { |
| 6234 | /* Only true SOM objects count. */ |
| 6235 | if (curr_bfd->format == bfd_object |
| 6236 | && curr_bfd->xvec->flavour == bfd_target_som_flavour) |
| 6237 | lst.module_count++; |
| 6238 | curr_bfd = curr_bfd->archive_next; |
| 6239 | } |
| 6240 | lst.module_limit = lst.module_count; |
| 6241 | lst.dir_loc = lst_size; |
| 6242 | lst_size += sizeof (struct som_entry) * lst.module_count; |
| 6243 | |
| 6244 | /* We don't support import/export tables, auxiliary headers, |
| 6245 | or free lists yet. Make the linker work a little harder |
| 6246 | to make our life easier. */ |
| 6247 | |
| 6248 | lst.export_loc = 0; |
| 6249 | lst.export_count = 0; |
| 6250 | lst.import_loc = 0; |
| 6251 | lst.aux_loc = 0; |
| 6252 | lst.aux_size = 0; |
| 6253 | |
| 6254 | /* Count how many symbols we will have on the hash chains and the |
| 6255 | size of the associated string table. */ |
| 6256 | if (! som_bfd_prep_for_ar_write (abfd, &nsyms, &stringsize)) |
| 6257 | return FALSE; |
| 6258 | |
| 6259 | lst_size += sizeof (struct lst_symbol_record) * nsyms; |
| 6260 | |
| 6261 | /* For the string table. One day we might actually use this info |
| 6262 | to avoid small seeks/reads when reading archives. */ |
| 6263 | lst.string_loc = lst_size; |
| 6264 | lst.string_size = stringsize; |
| 6265 | lst_size += stringsize; |
| 6266 | |
| 6267 | /* SOM ABI says this must be zero. */ |
| 6268 | lst.free_list = 0; |
| 6269 | lst.file_end = lst_size; |
| 6270 | |
| 6271 | /* Compute the checksum. Must happen after the entire lst header |
| 6272 | has filled in. */ |
| 6273 | p = (int *) &lst; |
| 6274 | lst.checksum = 0; |
| 6275 | for (i = 0; i < sizeof (struct lst_header) / sizeof (int) - 1; i++) |
| 6276 | lst.checksum ^= *p++; |
| 6277 | |
| 6278 | sprintf (hdr.ar_name, "/ "); |
| 6279 | sprintf (hdr.ar_date, "%ld", bfd_ardata (abfd)->armap_timestamp); |
| 6280 | sprintf (hdr.ar_uid, "%ld", (long) getuid ()); |
| 6281 | sprintf (hdr.ar_gid, "%ld", (long) getgid ()); |
| 6282 | sprintf (hdr.ar_mode, "%-8o", (unsigned int) statbuf.st_mode); |
| 6283 | sprintf (hdr.ar_size, "%-10d", (int) lst_size); |
| 6284 | hdr.ar_fmag[0] = '`'; |
| 6285 | hdr.ar_fmag[1] = '\012'; |
| 6286 | |
| 6287 | /* Turn any nulls into spaces. */ |
| 6288 | for (i = 0; i < sizeof (struct ar_hdr); i++) |
| 6289 | if (((char *) (&hdr))[i] == '\0') |
| 6290 | (((char *) (&hdr))[i]) = ' '; |
| 6291 | |
| 6292 | /* Scribble out the ar header. */ |
| 6293 | amt = sizeof (struct ar_hdr); |
| 6294 | if (bfd_bwrite ((void *) &hdr, amt, abfd) != amt) |
| 6295 | return FALSE; |
| 6296 | |
| 6297 | /* Now scribble out the lst header. */ |
| 6298 | amt = sizeof (struct lst_header); |
| 6299 | if (bfd_bwrite ((void *) &lst, amt, abfd) != amt) |
| 6300 | return FALSE; |
| 6301 | |
| 6302 | /* Build and write the armap. */ |
| 6303 | if (!som_bfd_ar_write_symbol_stuff (abfd, nsyms, stringsize, lst, elength)) |
| 6304 | return FALSE; |
| 6305 | |
| 6306 | /* Done. */ |
| 6307 | return TRUE; |
| 6308 | } |
| 6309 | |
| 6310 | /* Free all information we have cached for this BFD. We can always |
| 6311 | read it again later if we need it. */ |
| 6312 | |
| 6313 | static bfd_boolean |
| 6314 | som_bfd_free_cached_info (bfd *abfd) |
| 6315 | { |
| 6316 | asection *o; |
| 6317 | |
| 6318 | if (bfd_get_format (abfd) != bfd_object) |
| 6319 | return TRUE; |
| 6320 | |
| 6321 | #define FREE(x) if (x != NULL) { free (x); x = NULL; } |
| 6322 | /* Free the native string and symbol tables. */ |
| 6323 | FREE (obj_som_symtab (abfd)); |
| 6324 | FREE (obj_som_stringtab (abfd)); |
| 6325 | for (o = abfd->sections; o != NULL; o = o->next) |
| 6326 | { |
| 6327 | /* Free the native relocations. */ |
| 6328 | o->reloc_count = (unsigned) -1; |
| 6329 | FREE (som_section_data (o)->reloc_stream); |
| 6330 | /* Free the generic relocations. */ |
| 6331 | FREE (o->relocation); |
| 6332 | } |
| 6333 | #undef FREE |
| 6334 | |
| 6335 | return TRUE; |
| 6336 | } |
| 6337 | |
| 6338 | /* End of miscellaneous support functions. */ |
| 6339 | |
| 6340 | /* Linker support functions. */ |
| 6341 | |
| 6342 | static bfd_boolean |
| 6343 | som_bfd_link_split_section (bfd *abfd ATTRIBUTE_UNUSED, asection *sec) |
| 6344 | { |
| 6345 | return som_is_subspace (sec) && sec->size > 240000; |
| 6346 | } |
| 6347 | |
| 6348 | #define som_close_and_cleanup som_bfd_free_cached_info |
| 6349 | #define som_read_ar_hdr _bfd_generic_read_ar_hdr |
| 6350 | #define som_openr_next_archived_file bfd_generic_openr_next_archived_file |
| 6351 | #define som_get_elt_at_index _bfd_generic_get_elt_at_index |
| 6352 | #define som_generic_stat_arch_elt bfd_generic_stat_arch_elt |
| 6353 | #define som_truncate_arname bfd_bsd_truncate_arname |
| 6354 | #define som_slurp_extended_name_table _bfd_slurp_extended_name_table |
| 6355 | #define som_construct_extended_name_table _bfd_archive_coff_construct_extended_name_table |
| 6356 | #define som_update_armap_timestamp bfd_true |
| 6357 | #define som_bfd_is_target_special_symbol ((bfd_boolean (*) (bfd *, asymbol *)) bfd_false) |
| 6358 | #define som_get_lineno _bfd_nosymbols_get_lineno |
| 6359 | #define som_bfd_make_debug_symbol _bfd_nosymbols_bfd_make_debug_symbol |
| 6360 | #define som_read_minisymbols _bfd_generic_read_minisymbols |
| 6361 | #define som_minisymbol_to_symbol _bfd_generic_minisymbol_to_symbol |
| 6362 | #define som_get_section_contents_in_window _bfd_generic_get_section_contents_in_window |
| 6363 | #define som_bfd_get_relocated_section_contents bfd_generic_get_relocated_section_contents |
| 6364 | #define som_bfd_relax_section bfd_generic_relax_section |
| 6365 | #define som_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| 6366 | #define som_bfd_link_hash_table_free _bfd_generic_link_hash_table_free |
| 6367 | #define som_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| 6368 | #define som_bfd_link_just_syms _bfd_generic_link_just_syms |
| 6369 | #define som_bfd_final_link _bfd_generic_final_link |
| 6370 | #define som_bfd_gc_sections bfd_generic_gc_sections |
| 6371 | #define som_bfd_merge_sections bfd_generic_merge_sections |
| 6372 | #define som_bfd_is_group_section bfd_generic_is_group_section |
| 6373 | #define som_bfd_discard_group bfd_generic_discard_group |
| 6374 | #define som_section_already_linked _bfd_generic_section_already_linked |
| 6375 | #define som_bfd_merge_private_bfd_data _bfd_generic_bfd_merge_private_bfd_data |
| 6376 | #define som_bfd_copy_private_header_data _bfd_generic_bfd_copy_private_header_data |
| 6377 | #define som_bfd_set_private_flags _bfd_generic_bfd_set_private_flags |
| 6378 | #define som_find_inliner_info _bfd_nosymbols_find_inliner_info |
| 6379 | |
| 6380 | const bfd_target som_vec = |
| 6381 | { |
| 6382 | "som", /* Name. */ |
| 6383 | bfd_target_som_flavour, |
| 6384 | BFD_ENDIAN_BIG, /* Target byte order. */ |
| 6385 | BFD_ENDIAN_BIG, /* Target headers byte order. */ |
| 6386 | (HAS_RELOC | EXEC_P | /* Object flags. */ |
| 6387 | HAS_LINENO | HAS_DEBUG | |
| 6388 | HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED | DYNAMIC), |
| 6389 | (SEC_CODE | SEC_DATA | SEC_ROM | SEC_HAS_CONTENTS | SEC_LINK_ONCE |
| 6390 | | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* Section flags. */ |
| 6391 | |
| 6392 | /* Leading_symbol_char: is the first char of a user symbol |
| 6393 | predictable, and if so what is it. */ |
| 6394 | 0, |
| 6395 | '/', /* AR_pad_char. */ |
| 6396 | 14, /* AR_max_namelen. */ |
| 6397 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 6398 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 6399 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Data. */ |
| 6400 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
| 6401 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
| 6402 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* Headers. */ |
| 6403 | {_bfd_dummy_target, |
| 6404 | som_object_p, /* bfd_check_format. */ |
| 6405 | bfd_generic_archive_p, |
| 6406 | _bfd_dummy_target |
| 6407 | }, |
| 6408 | { |
| 6409 | bfd_false, |
| 6410 | som_mkobject, |
| 6411 | _bfd_generic_mkarchive, |
| 6412 | bfd_false |
| 6413 | }, |
| 6414 | { |
| 6415 | bfd_false, |
| 6416 | som_write_object_contents, |
| 6417 | _bfd_write_archive_contents, |
| 6418 | bfd_false, |
| 6419 | }, |
| 6420 | #undef som |
| 6421 | |
| 6422 | BFD_JUMP_TABLE_GENERIC (som), |
| 6423 | BFD_JUMP_TABLE_COPY (som), |
| 6424 | BFD_JUMP_TABLE_CORE (_bfd_nocore), |
| 6425 | BFD_JUMP_TABLE_ARCHIVE (som), |
| 6426 | BFD_JUMP_TABLE_SYMBOLS (som), |
| 6427 | BFD_JUMP_TABLE_RELOCS (som), |
| 6428 | BFD_JUMP_TABLE_WRITE (som), |
| 6429 | BFD_JUMP_TABLE_LINK (som), |
| 6430 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
| 6431 | |
| 6432 | NULL, |
| 6433 | |
| 6434 | NULL |
| 6435 | }; |
| 6436 | |
| 6437 | #endif /* HOST_HPPAHPUX || HOST_HPPABSD || HOST_HPPAOSF */ |