1 /* tc-ppc.c -- Assemble for the PowerPC or POWER (RS/6000)
2 Copyright (C) 1994-2014 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of GAS, the GNU Assembler.
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
23 #include "safe-ctype.h"
25 #include "dw2gencfi.h"
26 #include "opcode/ppc.h"
30 #include "elf/ppc64.h"
31 #include "dwarf2dbg.h"
39 #include "coff/xcoff.h"
43 /* This is the assembler for the PowerPC or POWER (RS/6000) chips. */
45 /* Tell the main code what the endianness is. */
46 extern int target_big_endian
;
48 /* Whether or not, we've set target_big_endian. */
49 static int set_target_endian
= 0;
51 /* Whether to use user friendly register names. */
52 #ifndef TARGET_REG_NAMES_P
54 #define TARGET_REG_NAMES_P TRUE
56 #define TARGET_REG_NAMES_P FALSE
60 /* Macros for calculating LO, HI, HA, HIGHER, HIGHERA, HIGHEST,
63 /* #lo(value) denotes the least significant 16 bits of the indicated. */
64 #define PPC_LO(v) ((v) & 0xffff)
66 /* #hi(value) denotes bits 16 through 31 of the indicated value. */
67 #define PPC_HI(v) (((v) >> 16) & 0xffff)
69 /* #ha(value) denotes the high adjusted value: bits 16 through 31 of
70 the indicated value, compensating for #lo() being treated as a
72 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
74 /* #higher(value) denotes bits 32 through 47 of the indicated value. */
75 #define PPC_HIGHER(v) (((v) >> 16 >> 16) & 0xffff)
77 /* #highera(value) denotes bits 32 through 47 of the indicated value,
78 compensating for #lo() being treated as a signed number. */
79 #define PPC_HIGHERA(v) PPC_HIGHER ((v) + 0x8000)
81 /* #highest(value) denotes bits 48 through 63 of the indicated value. */
82 #define PPC_HIGHEST(v) (((v) >> 24 >> 24) & 0xffff)
84 /* #highesta(value) denotes bits 48 through 63 of the indicated value,
85 compensating for #lo being treated as a signed number. */
86 #define PPC_HIGHESTA(v) PPC_HIGHEST ((v) + 0x8000)
88 #define SEX16(val) (((val) ^ 0x8000) - 0x8000)
90 /* For the time being on ppc64, don't report overflow on @h and @ha
91 applied to constants. */
92 #define REPORT_OVERFLOW_HI 0
94 static bfd_boolean reg_names_p
= TARGET_REG_NAMES_P
;
96 static void ppc_macro (char *, const struct powerpc_macro
*);
97 static void ppc_byte (int);
99 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
100 static void ppc_tc (int);
101 static void ppc_machine (int);
105 static void ppc_comm (int);
106 static void ppc_bb (int);
107 static void ppc_bc (int);
108 static void ppc_bf (int);
109 static void ppc_biei (int);
110 static void ppc_bs (int);
111 static void ppc_eb (int);
112 static void ppc_ec (int);
113 static void ppc_ef (int);
114 static void ppc_es (int);
115 static void ppc_csect (int);
116 static void ppc_dwsect (int);
117 static void ppc_change_csect (symbolS
*, offsetT
);
118 static void ppc_function (int);
119 static void ppc_extern (int);
120 static void ppc_lglobl (int);
121 static void ppc_ref (int);
122 static void ppc_section (int);
123 static void ppc_named_section (int);
124 static void ppc_stabx (int);
125 static void ppc_rename (int);
126 static void ppc_toc (int);
127 static void ppc_xcoff_cons (int);
128 static void ppc_vbyte (int);
132 static void ppc_elf_cons (int);
133 static void ppc_elf_rdata (int);
134 static void ppc_elf_lcomm (int);
135 static void ppc_elf_localentry (int);
136 static void ppc_elf_abiversion (int);
140 static void ppc_previous (int);
141 static void ppc_pdata (int);
142 static void ppc_ydata (int);
143 static void ppc_reldata (int);
144 static void ppc_rdata (int);
145 static void ppc_ualong (int);
146 static void ppc_znop (int);
147 static void ppc_pe_comm (int);
148 static void ppc_pe_section (int);
149 static void ppc_pe_function (int);
150 static void ppc_pe_tocd (int);
153 /* Generic assembler global variables which must be defined by all
157 /* This string holds the chars that always start a comment. If the
158 pre-processor is disabled, these aren't very useful. The macro
159 tc_comment_chars points to this. We use this, rather than the
160 usual comment_chars, so that we can switch for Solaris conventions. */
161 static const char ppc_solaris_comment_chars
[] = "#!";
162 static const char ppc_eabi_comment_chars
[] = "#";
164 #ifdef TARGET_SOLARIS_COMMENT
165 const char *ppc_comment_chars
= ppc_solaris_comment_chars
;
167 const char *ppc_comment_chars
= ppc_eabi_comment_chars
;
170 const char comment_chars
[] = "#";
173 /* Characters which start a comment at the beginning of a line. */
174 const char line_comment_chars
[] = "#";
176 /* Characters which may be used to separate multiple commands on a
178 const char line_separator_chars
[] = ";";
180 /* Characters which are used to indicate an exponent in a floating
182 const char EXP_CHARS
[] = "eE";
184 /* Characters which mean that a number is a floating point constant,
186 const char FLT_CHARS
[] = "dD";
188 /* Anything that can start an operand needs to be mentioned here,
189 to stop the input scrubber eating whitespace. */
190 const char ppc_symbol_chars
[] = "%[";
192 /* The dwarf2 data alignment, adjusted for 32 or 64 bit. */
193 int ppc_cie_data_alignment
;
195 /* The dwarf2 minimum instruction length. */
196 int ppc_dwarf2_line_min_insn_length
;
198 /* More than this number of nops in an alignment op gets a branch
200 unsigned long nop_limit
= 4;
202 /* The type of processor we are assembling for. This is one or more
203 of the PPC_OPCODE flags defined in opcode/ppc.h. */
204 ppc_cpu_t ppc_cpu
= 0;
205 ppc_cpu_t sticky
= 0;
207 /* Value for ELF e_flags EF_PPC64_ABI. */
208 unsigned int ppc_abiversion
= 0;
210 /* Flags set on encountering toc relocs. */
212 has_large_toc_reloc
= 1,
213 has_small_toc_reloc
= 2
216 /* The target specific pseudo-ops which we support. */
218 const pseudo_typeS md_pseudo_table
[] =
220 /* Pseudo-ops which must be overridden. */
221 { "byte", ppc_byte
, 0 },
224 /* Pseudo-ops specific to the RS/6000 XCOFF format. Some of these
225 legitimately belong in the obj-*.c file. However, XCOFF is based
226 on COFF, and is only implemented for the RS/6000. We just use
227 obj-coff.c, and add what we need here. */
228 { "comm", ppc_comm
, 0 },
229 { "lcomm", ppc_comm
, 1 },
233 { "bi", ppc_biei
, 0 },
235 { "csect", ppc_csect
, 0 },
236 { "dwsect", ppc_dwsect
, 0 },
237 { "data", ppc_section
, 'd' },
241 { "ei", ppc_biei
, 1 },
243 { "extern", ppc_extern
, 0 },
244 { "function", ppc_function
, 0 },
245 { "lglobl", ppc_lglobl
, 0 },
246 { "ref", ppc_ref
, 0 },
247 { "rename", ppc_rename
, 0 },
248 { "section", ppc_named_section
, 0 },
249 { "stabx", ppc_stabx
, 0 },
250 { "text", ppc_section
, 't' },
251 { "toc", ppc_toc
, 0 },
252 { "long", ppc_xcoff_cons
, 2 },
253 { "llong", ppc_xcoff_cons
, 3 },
254 { "word", ppc_xcoff_cons
, 1 },
255 { "short", ppc_xcoff_cons
, 1 },
256 { "vbyte", ppc_vbyte
, 0 },
260 { "llong", ppc_elf_cons
, 8 },
261 { "quad", ppc_elf_cons
, 8 },
262 { "long", ppc_elf_cons
, 4 },
263 { "word", ppc_elf_cons
, 2 },
264 { "short", ppc_elf_cons
, 2 },
265 { "rdata", ppc_elf_rdata
, 0 },
266 { "rodata", ppc_elf_rdata
, 0 },
267 { "lcomm", ppc_elf_lcomm
, 0 },
268 { "localentry", ppc_elf_localentry
, 0 },
269 { "abiversion", ppc_elf_abiversion
, 0 },
273 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
274 { "previous", ppc_previous
, 0 },
275 { "pdata", ppc_pdata
, 0 },
276 { "ydata", ppc_ydata
, 0 },
277 { "reldata", ppc_reldata
, 0 },
278 { "rdata", ppc_rdata
, 0 },
279 { "ualong", ppc_ualong
, 0 },
280 { "znop", ppc_znop
, 0 },
281 { "comm", ppc_pe_comm
, 0 },
282 { "lcomm", ppc_pe_comm
, 1 },
283 { "section", ppc_pe_section
, 0 },
284 { "function", ppc_pe_function
,0 },
285 { "tocd", ppc_pe_tocd
, 0 },
288 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
290 { "machine", ppc_machine
, 0 },
297 /* Predefined register names if -mregnames (or default for Windows NT).
298 In general, there are lots of them, in an attempt to be compatible
299 with a number of other Windows NT assemblers. */
301 /* Structure to hold information about predefined registers. */
308 /* List of registers that are pre-defined:
310 Each general register has predefined names of the form:
311 1. r<reg_num> which has the value <reg_num>.
312 2. r.<reg_num> which has the value <reg_num>.
314 Each floating point register has predefined names of the form:
315 1. f<reg_num> which has the value <reg_num>.
316 2. f.<reg_num> which has the value <reg_num>.
318 Each vector unit register has predefined names of the form:
319 1. v<reg_num> which has the value <reg_num>.
320 2. v.<reg_num> which has the value <reg_num>.
322 Each condition register has predefined names of the form:
323 1. cr<reg_num> which has the value <reg_num>.
324 2. cr.<reg_num> which has the value <reg_num>.
326 There are individual registers as well:
327 sp or r.sp has the value 1
328 rtoc or r.toc has the value 2
329 fpscr has the value 0
335 dsisr has the value 18
337 sdr1 has the value 25
338 srr0 has the value 26
339 srr1 has the value 27
341 The table is sorted. Suitable for searching by a binary search. */
343 static const struct pd_reg pre_defined_registers
[] =
345 { "cr.0", 0 }, /* Condition Registers */
365 { "dar", 19 }, /* Data Access Register */
366 { "dec", 22 }, /* Decrementer */
367 { "dsisr", 18 }, /* Data Storage Interrupt Status Register */
369 { "f.0", 0 }, /* Floating point registers */
396 { "f.32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
462 { "f32", 32 }, /* Extended floating point scalar registers (ISA 2.06). */
503 /* Quantization registers used with pair single instructions. */
521 { "lr", 8 }, /* Link Register */
525 { "r.0", 0 }, /* General Purpose Registers */
558 { "r.sp", 1 }, /* Stack Pointer */
560 { "r.toc", 2 }, /* Pointer to the table of contents */
562 { "r0", 0 }, /* More general purpose registers */
595 { "rtoc", 2 }, /* Table of contents */
597 { "sdr1", 25 }, /* Storage Description Register 1 */
601 { "srr0", 26 }, /* Machine Status Save/Restore Register 0 */
602 { "srr1", 27 }, /* Machine Status Save/Restore Register 1 */
604 { "v.0", 0 }, /* Vector (Altivec/VMX) registers */
670 { "vs.0", 0 }, /* Vector Scalar (VSX) registers (ISA 2.06). */
804 #define REG_NAME_CNT (sizeof (pre_defined_registers) / sizeof (struct pd_reg))
806 /* Given NAME, find the register number associated with that name, return
807 the integer value associated with the given name or -1 on failure. */
810 reg_name_search (const struct pd_reg
*regs
, int regcount
, const char *name
)
812 int middle
, low
, high
;
820 middle
= (low
+ high
) / 2;
821 cmp
= strcasecmp (name
, regs
[middle
].name
);
827 return regs
[middle
].value
;
835 * Summary of register_name.
837 * in: Input_line_pointer points to 1st char of operand.
839 * out: A expressionS.
840 * The operand may have been a register: in this case, X_op == O_register,
841 * X_add_number is set to the register number, and truth is returned.
842 * Input_line_pointer->(next non-blank) char after operand, or is in its
847 register_name (expressionS
*expressionP
)
854 /* Find the spelling of the operand. */
855 start
= name
= input_line_pointer
;
856 if (name
[0] == '%' && ISALPHA (name
[1]))
857 name
= ++input_line_pointer
;
859 else if (!reg_names_p
|| !ISALPHA (name
[0]))
862 c
= get_symbol_end ();
863 reg_number
= reg_name_search (pre_defined_registers
, REG_NAME_CNT
, name
);
865 /* Put back the delimiting char. */
866 *input_line_pointer
= c
;
868 /* Look to see if it's in the register table. */
871 expressionP
->X_op
= O_register
;
872 expressionP
->X_add_number
= reg_number
;
874 /* Make the rest nice. */
875 expressionP
->X_add_symbol
= NULL
;
876 expressionP
->X_op_symbol
= NULL
;
880 /* Reset the line as if we had not done anything. */
881 input_line_pointer
= start
;
885 /* This function is called for each symbol seen in an expression. It
886 handles the special parsing which PowerPC assemblers are supposed
887 to use for condition codes. */
889 /* Whether to do the special parsing. */
890 static bfd_boolean cr_operand
;
892 /* Names to recognize in a condition code. This table is sorted. */
893 static const struct pd_reg cr_names
[] =
910 /* Parsing function. This returns non-zero if it recognized an
914 ppc_parse_name (const char *name
, expressionS
*exp
)
923 val
= reg_name_search (cr_names
, sizeof cr_names
/ sizeof cr_names
[0],
928 exp
->X_op
= O_constant
;
929 exp
->X_add_number
= val
;
934 /* Local variables. */
936 /* Whether to target xcoff64/elf64. */
937 static unsigned int ppc_obj64
= BFD_DEFAULT_TARGET_SIZE
== 64;
939 /* Opcode hash table. */
940 static struct hash_control
*ppc_hash
;
942 /* Macro hash table. */
943 static struct hash_control
*ppc_macro_hash
;
946 /* What type of shared library support to use. */
947 static enum { SHLIB_NONE
, SHLIB_PIC
, SHLIB_MRELOCATABLE
} shlib
= SHLIB_NONE
;
949 /* Flags to set in the elf header. */
950 static flagword ppc_flags
= 0;
952 /* Whether this is Solaris or not. */
953 #ifdef TARGET_SOLARIS_COMMENT
954 #define SOLARIS_P TRUE
956 #define SOLARIS_P FALSE
959 static bfd_boolean msolaris
= SOLARIS_P
;
964 /* The RS/6000 assembler uses the .csect pseudo-op to generate code
965 using a bunch of different sections. These assembler sections,
966 however, are all encompassed within the .text or .data sections of
967 the final output file. We handle this by using different
968 subsegments within these main segments. */
970 /* Next subsegment to allocate within the .text segment. */
971 static subsegT ppc_text_subsegment
= 2;
973 /* Linked list of csects in the text section. */
974 static symbolS
*ppc_text_csects
;
976 /* Next subsegment to allocate within the .data segment. */
977 static subsegT ppc_data_subsegment
= 2;
979 /* Linked list of csects in the data section. */
980 static symbolS
*ppc_data_csects
;
982 /* The current csect. */
983 static symbolS
*ppc_current_csect
;
985 /* The RS/6000 assembler uses a TOC which holds addresses of functions
986 and variables. Symbols are put in the TOC with the .tc pseudo-op.
987 A special relocation is used when accessing TOC entries. We handle
988 the TOC as a subsegment within the .data segment. We set it up if
989 we see a .toc pseudo-op, and save the csect symbol here. */
990 static symbolS
*ppc_toc_csect
;
992 /* The first frag in the TOC subsegment. */
993 static fragS
*ppc_toc_frag
;
995 /* The first frag in the first subsegment after the TOC in the .data
996 segment. NULL if there are no subsegments after the TOC. */
997 static fragS
*ppc_after_toc_frag
;
999 /* The current static block. */
1000 static symbolS
*ppc_current_block
;
1002 /* The COFF debugging section; set by md_begin. This is not the
1003 .debug section, but is instead the secret BFD section which will
1004 cause BFD to set the section number of a symbol to N_DEBUG. */
1005 static asection
*ppc_coff_debug_section
;
1007 /* Structure to set the length field of the dwarf sections. */
1008 struct dw_subsection
{
1009 /* Subsections are simply linked. */
1010 struct dw_subsection
*link
;
1012 /* The subsection number. */
1015 /* Expression to compute the length of the section. */
1016 expressionS end_exp
;
1019 static struct dw_section
{
1020 /* Corresponding section. */
1023 /* Simply linked list of subsections with a label. */
1024 struct dw_subsection
*list_subseg
;
1026 /* The anonymous subsection. */
1027 struct dw_subsection
*anon_subseg
;
1028 } dw_sections
[XCOFF_DWSECT_NBR_NAMES
];
1029 #endif /* OBJ_XCOFF */
1033 /* Various sections that we need for PE coff support. */
1034 static segT ydata_section
;
1035 static segT pdata_section
;
1036 static segT reldata_section
;
1037 static segT rdata_section
;
1038 static segT tocdata_section
;
1040 /* The current section and the previous section. See ppc_previous. */
1041 static segT ppc_previous_section
;
1042 static segT ppc_current_section
;
1047 symbolS
*GOT_symbol
; /* Pre-defined "_GLOBAL_OFFSET_TABLE" */
1048 #define PPC_APUINFO_ISEL 0x40
1049 #define PPC_APUINFO_PMR 0x41
1050 #define PPC_APUINFO_RFMCI 0x42
1051 #define PPC_APUINFO_CACHELCK 0x43
1052 #define PPC_APUINFO_SPE 0x100
1053 #define PPC_APUINFO_EFS 0x101
1054 #define PPC_APUINFO_BRLOCK 0x102
1055 #define PPC_APUINFO_VLE 0x104
1058 * We keep a list of APUinfo
1060 unsigned long *ppc_apuinfo_list
;
1061 unsigned int ppc_apuinfo_num
;
1062 unsigned int ppc_apuinfo_num_alloc
;
1063 #endif /* OBJ_ELF */
1066 const char *const md_shortopts
= "b:l:usm:K:VQ:";
1068 const char *const md_shortopts
= "um:";
1070 #define OPTION_NOPS (OPTION_MD_BASE + 0)
1071 const struct option md_longopts
[] = {
1072 {"nops", required_argument
, NULL
, OPTION_NOPS
},
1073 {NULL
, no_argument
, NULL
, 0}
1075 const size_t md_longopts_size
= sizeof (md_longopts
);
1078 md_parse_option (int c
, char *arg
)
1085 /* -u means that any undefined symbols should be treated as
1086 external, which is the default for gas anyhow. */
1091 /* Solaris as takes -le (presumably for little endian). For completeness
1092 sake, recognize -be also. */
1093 if (strcmp (arg
, "e") == 0)
1095 target_big_endian
= 0;
1096 set_target_endian
= 1;
1097 if (ppc_cpu
& PPC_OPCODE_VLE
)
1098 as_bad (_("the use of -mvle requires big endian."));
1106 if (strcmp (arg
, "e") == 0)
1108 target_big_endian
= 1;
1109 set_target_endian
= 1;
1117 /* Recognize -K PIC. */
1118 if (strcmp (arg
, "PIC") == 0 || strcmp (arg
, "pic") == 0)
1121 ppc_flags
|= EF_PPC_RELOCATABLE_LIB
;
1129 /* a64 and a32 determine whether to use XCOFF64 or XCOFF32. */
1131 if (strcmp (arg
, "64") == 0)
1135 if (ppc_cpu
& PPC_OPCODE_VLE
)
1136 as_bad (_("the use of -mvle requires -a32."));
1138 as_fatal (_("%s unsupported"), "-a64");
1141 else if (strcmp (arg
, "32") == 0)
1148 new_cpu
= ppc_parse_cpu (ppc_cpu
, &sticky
, arg
);
1152 if (strcmp (arg
, "vle") == 0)
1154 if (set_target_endian
&& target_big_endian
== 0)
1155 as_bad (_("the use of -mvle requires big endian."));
1157 as_bad (_("the use of -mvle requires -a32."));
1161 else if (strcmp (arg
, "regnames") == 0)
1164 else if (strcmp (arg
, "no-regnames") == 0)
1165 reg_names_p
= FALSE
;
1168 /* -mrelocatable/-mrelocatable-lib -- warn about initializations
1169 that require relocation. */
1170 else if (strcmp (arg
, "relocatable") == 0)
1172 shlib
= SHLIB_MRELOCATABLE
;
1173 ppc_flags
|= EF_PPC_RELOCATABLE
;
1176 else if (strcmp (arg
, "relocatable-lib") == 0)
1178 shlib
= SHLIB_MRELOCATABLE
;
1179 ppc_flags
|= EF_PPC_RELOCATABLE_LIB
;
1182 /* -memb, set embedded bit. */
1183 else if (strcmp (arg
, "emb") == 0)
1184 ppc_flags
|= EF_PPC_EMB
;
1186 /* -mlittle/-mbig set the endianness. */
1187 else if (strcmp (arg
, "little") == 0
1188 || strcmp (arg
, "little-endian") == 0)
1190 target_big_endian
= 0;
1191 set_target_endian
= 1;
1192 if (ppc_cpu
& PPC_OPCODE_VLE
)
1193 as_bad (_("the use of -mvle requires big endian."));
1196 else if (strcmp (arg
, "big") == 0 || strcmp (arg
, "big-endian") == 0)
1198 target_big_endian
= 1;
1199 set_target_endian
= 1;
1202 else if (strcmp (arg
, "solaris") == 0)
1205 ppc_comment_chars
= ppc_solaris_comment_chars
;
1208 else if (strcmp (arg
, "no-solaris") == 0)
1211 ppc_comment_chars
= ppc_eabi_comment_chars
;
1216 as_bad (_("invalid switch -m%s"), arg
);
1222 /* -V: SVR4 argument to print version ID. */
1224 print_version_id ();
1227 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
1228 should be emitted or not. FIXME: Not implemented. */
1232 /* Solaris takes -s to specify that .stabs go in a .stabs section,
1233 rather than .stabs.excl, which is ignored by the linker.
1234 FIXME: Not implemented. */
1245 nop_limit
= strtoul (optarg
, &end
, 0);
1247 as_bad (_("--nops needs a numeric argument"));
1259 md_show_usage (FILE *stream
)
1261 fprintf (stream
, _("\
1263 -a32 generate ELF32/XCOFF32\n\
1264 -a64 generate ELF64/XCOFF64\n\
1266 -mpwrx, -mpwr2 generate code for POWER/2 (RIOS2)\n\
1267 -mpwr generate code for POWER (RIOS1)\n\
1268 -m601 generate code for PowerPC 601\n\
1269 -mppc, -mppc32, -m603, -m604\n\
1270 generate code for PowerPC 603/604\n\
1271 -m403 generate code for PowerPC 403\n\
1272 -m405 generate code for PowerPC 405\n\
1273 -m440 generate code for PowerPC 440\n\
1274 -m464 generate code for PowerPC 464\n\
1275 -m476 generate code for PowerPC 476\n\
1276 -m7400, -m7410, -m7450, -m7455\n\
1277 generate code for PowerPC 7400/7410/7450/7455\n\
1278 -m750cl generate code for PowerPC 750cl\n"));
1279 fprintf (stream
, _("\
1280 -mppc64, -m620 generate code for PowerPC 620/625/630\n\
1281 -mppc64bridge generate code for PowerPC 64, including bridge insns\n\
1282 -mbooke generate code for 32-bit PowerPC BookE\n\
1283 -ma2 generate code for A2 architecture\n\
1284 -mpower4, -mpwr4 generate code for Power4 architecture\n\
1285 -mpower5, -mpwr5, -mpwr5x\n\
1286 generate code for Power5 architecture\n\
1287 -mpower6, -mpwr6 generate code for Power6 architecture\n\
1288 -mpower7, -mpwr7 generate code for Power7 architecture\n\
1289 -mpower8, -mpwr8 generate code for Power8 architecture\n\
1290 -mcell generate code for Cell Broadband Engine architecture\n\
1291 -mcom generate code Power/PowerPC common instructions\n\
1292 -many generate code for any architecture (PWR/PWRX/PPC)\n"));
1293 fprintf (stream
, _("\
1294 -maltivec generate code for AltiVec\n\
1295 -mvsx generate code for Vector-Scalar (VSX) instructions\n\
1296 -mhtm generate code for Hardware Transactional Memory\n\
1297 -me300 generate code for PowerPC e300 family\n\
1298 -me500, -me500x2 generate code for Motorola e500 core complex\n\
1299 -me500mc, generate code for Freescale e500mc core complex\n\
1300 -me500mc64, generate code for Freescale e500mc64 core complex\n\
1301 -me5500, generate code for Freescale e5500 core complex\n\
1302 -me6500, generate code for Freescale e6500 core complex\n\
1303 -mspe generate code for Motorola SPE instructions\n\
1304 -mvle generate code for Freescale VLE instructions\n\
1305 -mtitan generate code for AppliedMicro Titan core complex\n\
1306 -mregnames Allow symbolic names for registers\n\
1307 -mno-regnames Do not allow symbolic names for registers\n"));
1309 fprintf (stream
, _("\
1310 -mrelocatable support for GCC's -mrelocatble option\n\
1311 -mrelocatable-lib support for GCC's -mrelocatble-lib option\n\
1312 -memb set PPC_EMB bit in ELF flags\n\
1313 -mlittle, -mlittle-endian, -le\n\
1314 generate code for a little endian machine\n\
1315 -mbig, -mbig-endian, -be\n\
1316 generate code for a big endian machine\n\
1317 -msolaris generate code for Solaris\n\
1318 -mno-solaris do not generate code for Solaris\n\
1319 -K PIC set EF_PPC_RELOCATABLE_LIB in ELF flags\n\
1320 -V print assembler version number\n\
1321 -Qy, -Qn ignored\n"));
1323 fprintf (stream
, _("\
1324 -nops=count when aligning, more than COUNT nops uses a branch\n"));
1327 /* Set ppc_cpu if it is not already set. */
1332 const char *default_os
= TARGET_OS
;
1333 const char *default_cpu
= TARGET_CPU
;
1335 if ((ppc_cpu
& ~(ppc_cpu_t
) PPC_OPCODE_ANY
) == 0)
1338 ppc_cpu
|= PPC_OPCODE_PPC
| PPC_OPCODE_64
;
1339 else if (strncmp (default_os
, "aix", 3) == 0
1340 && default_os
[3] >= '4' && default_os
[3] <= '9')
1341 ppc_cpu
|= PPC_OPCODE_COMMON
;
1342 else if (strncmp (default_os
, "aix3", 4) == 0)
1343 ppc_cpu
|= PPC_OPCODE_POWER
;
1344 else if (strcmp (default_cpu
, "rs6000") == 0)
1345 ppc_cpu
|= PPC_OPCODE_POWER
;
1346 else if (strncmp (default_cpu
, "powerpc", 7) == 0)
1347 ppc_cpu
|= PPC_OPCODE_PPC
;
1349 as_fatal (_("unknown default cpu = %s, os = %s"),
1350 default_cpu
, default_os
);
1354 /* Figure out the BFD architecture to use. This function and ppc_mach
1355 are called well before md_begin, when the output file is opened. */
1357 enum bfd_architecture
1360 const char *default_cpu
= TARGET_CPU
;
1363 if ((ppc_cpu
& PPC_OPCODE_PPC
) != 0)
1364 return bfd_arch_powerpc
;
1365 if ((ppc_cpu
& PPC_OPCODE_VLE
) != 0)
1366 return bfd_arch_powerpc
;
1367 if ((ppc_cpu
& PPC_OPCODE_POWER
) != 0)
1368 return bfd_arch_rs6000
;
1369 if ((ppc_cpu
& (PPC_OPCODE_COMMON
| PPC_OPCODE_ANY
)) != 0)
1371 if (strcmp (default_cpu
, "rs6000") == 0)
1372 return bfd_arch_rs6000
;
1373 else if (strncmp (default_cpu
, "powerpc", 7) == 0)
1374 return bfd_arch_powerpc
;
1377 as_fatal (_("neither Power nor PowerPC opcodes were selected."));
1378 return bfd_arch_unknown
;
1385 return bfd_mach_ppc64
;
1386 else if (ppc_arch () == bfd_arch_rs6000
)
1387 return bfd_mach_rs6k
;
1388 else if (ppc_cpu
& PPC_OPCODE_TITAN
)
1389 return bfd_mach_ppc_titan
;
1390 else if (ppc_cpu
& PPC_OPCODE_VLE
)
1391 return bfd_mach_ppc_vle
;
1393 return bfd_mach_ppc
;
1397 ppc_target_format (void)
1401 return target_big_endian
? "pe-powerpc" : "pe-powerpcle";
1403 return "xcoff-powermac";
1406 return (ppc_obj64
? "aix5coff64-rs6000" : "aixcoff-rs6000");
1408 return (ppc_obj64
? "aixcoff64-rs6000" : "aixcoff-rs6000");
1414 return (ppc_obj64
? "elf64-powerpc-freebsd" : "elf32-powerpc-freebsd");
1415 # elif defined (TE_VXWORKS)
1416 return "elf32-powerpc-vxworks";
1418 return (target_big_endian
1419 ? (ppc_obj64
? "elf64-powerpc" : "elf32-powerpc")
1420 : (ppc_obj64
? "elf64-powerpcle" : "elf32-powerpcle"));
1425 /* Validate one entry in powerpc_opcodes[] or vle_opcodes[].
1426 Return TRUE if there's a problem, otherwise FALSE. */
1429 insn_validate (const struct powerpc_opcode
*op
)
1431 const unsigned char *o
;
1432 unsigned long omask
= op
->mask
;
1434 /* The mask had better not trim off opcode bits. */
1435 if ((op
->opcode
& omask
) != op
->opcode
)
1437 as_bad (_("mask trims opcode bits for %s"), op
->name
);
1441 /* The operands must not overlap the opcode or each other. */
1442 for (o
= op
->operands
; *o
; ++o
)
1444 if (*o
>= num_powerpc_operands
)
1446 as_bad (_("operand index error for %s"), op
->name
);
1451 const struct powerpc_operand
*operand
= &powerpc_operands
[*o
];
1452 if (operand
->shift
!= PPC_OPSHIFT_INV
)
1456 if (operand
->shift
>= 0)
1457 mask
= operand
->bitm
<< operand
->shift
;
1459 mask
= operand
->bitm
>> -operand
->shift
;
1462 as_bad (_("operand %d overlap in %s"),
1463 (int) (o
- op
->operands
), op
->name
);
1473 /* Insert opcodes and macros into hash tables. Called at startup and
1474 for .machine pseudo. */
1477 ppc_setup_opcodes (void)
1479 const struct powerpc_opcode
*op
;
1480 const struct powerpc_opcode
*op_end
;
1481 const struct powerpc_macro
*macro
;
1482 const struct powerpc_macro
*macro_end
;
1483 bfd_boolean bad_insn
= FALSE
;
1485 if (ppc_hash
!= NULL
)
1486 hash_die (ppc_hash
);
1487 if (ppc_macro_hash
!= NULL
)
1488 hash_die (ppc_macro_hash
);
1490 /* Insert the opcodes into a hash table. */
1491 ppc_hash
= hash_new ();
1493 if (ENABLE_CHECKING
)
1497 /* An index into powerpc_operands is stored in struct fix
1498 fx_pcrel_adjust which is 8 bits wide. */
1499 gas_assert (num_powerpc_operands
< 256);
1501 /* Check operand masks. Code here and in the disassembler assumes
1502 all the 1's in the mask are contiguous. */
1503 for (i
= 0; i
< num_powerpc_operands
; ++i
)
1505 unsigned long mask
= powerpc_operands
[i
].bitm
;
1506 unsigned long right_bit
;
1509 right_bit
= mask
& -mask
;
1511 right_bit
= mask
& -mask
;
1512 if (mask
!= right_bit
)
1514 as_bad (_("powerpc_operands[%d].bitm invalid"), i
);
1517 for (j
= i
+ 1; j
< num_powerpc_operands
; ++j
)
1518 if (memcmp (&powerpc_operands
[i
], &powerpc_operands
[j
],
1519 sizeof (powerpc_operands
[0])) == 0)
1521 as_bad (_("powerpc_operands[%d] duplicates powerpc_operands[%d]"),
1528 op_end
= powerpc_opcodes
+ powerpc_num_opcodes
;
1529 for (op
= powerpc_opcodes
; op
< op_end
; op
++)
1531 if (ENABLE_CHECKING
)
1533 if (op
!= powerpc_opcodes
)
1535 int old_opcode
= PPC_OP (op
[-1].opcode
);
1536 int new_opcode
= PPC_OP (op
[0].opcode
);
1538 #ifdef PRINT_OPCODE_TABLE
1539 printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n",
1540 op
->name
, (unsigned int) (op
- powerpc_opcodes
),
1541 (unsigned int) new_opcode
, (unsigned int) op
->opcode
,
1542 (unsigned int) op
->mask
, (unsigned long long) op
->flags
);
1545 /* The major opcodes had better be sorted. Code in the
1546 disassembler assumes the insns are sorted according to
1548 if (new_opcode
< old_opcode
)
1550 as_bad (_("major opcode is not sorted for %s"),
1555 bad_insn
|= insn_validate (op
);
1558 if ((ppc_cpu
& op
->flags
) != 0
1559 && !(ppc_cpu
& op
->deprecated
))
1563 retval
= hash_insert (ppc_hash
, op
->name
, (void *) op
);
1566 as_bad (_("duplicate instruction %s"),
1573 if ((ppc_cpu
& PPC_OPCODE_ANY
) != 0)
1574 for (op
= powerpc_opcodes
; op
< op_end
; op
++)
1575 hash_insert (ppc_hash
, op
->name
, (void *) op
);
1577 op_end
= vle_opcodes
+ vle_num_opcodes
;
1578 for (op
= vle_opcodes
; op
< op_end
; op
++)
1580 if (ENABLE_CHECKING
)
1582 if (op
!= vle_opcodes
)
1584 unsigned old_seg
, new_seg
;
1586 old_seg
= VLE_OP (op
[-1].opcode
, op
[-1].mask
);
1587 old_seg
= VLE_OP_TO_SEG (old_seg
);
1588 new_seg
= VLE_OP (op
[0].opcode
, op
[0].mask
);
1589 new_seg
= VLE_OP_TO_SEG (new_seg
);
1591 #ifdef PRINT_OPCODE_TABLE
1592 printf ("%-14s\t#%04u\tmajor op: 0x%x\top: 0x%x\tmask: 0x%x\tflags: 0x%llx\n",
1593 op
->name
, (unsigned int) (op
- powerpc_opcodes
),
1594 (unsigned int) new_seg
, (unsigned int) op
->opcode
,
1595 (unsigned int) op
->mask
, (unsigned long long) op
->flags
);
1597 /* The major opcodes had better be sorted. Code in the
1598 disassembler assumes the insns are sorted according to
1600 if (new_seg
< old_seg
)
1602 as_bad (_("major opcode is not sorted for %s"),
1608 bad_insn
|= insn_validate (op
);
1611 if ((ppc_cpu
& op
->flags
) != 0
1612 && !(ppc_cpu
& op
->deprecated
))
1616 retval
= hash_insert (ppc_hash
, op
->name
, (void *) op
);
1619 as_bad (_("duplicate instruction %s"),
1626 if ((ppc_cpu
& PPC_OPCODE_VLE
) != 0)
1627 for (op
= vle_opcodes
; op
< op_end
; op
++)
1628 hash_insert (ppc_hash
, op
->name
, (void *) op
);
1630 /* Insert the macros into a hash table. */
1631 ppc_macro_hash
= hash_new ();
1633 macro_end
= powerpc_macros
+ powerpc_num_macros
;
1634 for (macro
= powerpc_macros
; macro
< macro_end
; macro
++)
1636 if ((macro
->flags
& ppc_cpu
) != 0 || (ppc_cpu
& PPC_OPCODE_ANY
) != 0)
1640 retval
= hash_insert (ppc_macro_hash
, macro
->name
, (void *) macro
);
1641 if (retval
!= (const char *) NULL
)
1643 as_bad (_("duplicate macro %s"), macro
->name
);
1653 /* This function is called when the assembler starts up. It is called
1654 after the options have been parsed and the output file has been
1662 ppc_cie_data_alignment
= ppc_obj64
? -8 : -4;
1663 ppc_dwarf2_line_min_insn_length
= (ppc_cpu
& PPC_OPCODE_VLE
) ? 2 : 4;
1666 /* Set the ELF flags if desired. */
1667 if (ppc_flags
&& !msolaris
)
1668 bfd_set_private_flags (stdoutput
, ppc_flags
);
1671 ppc_setup_opcodes ();
1673 /* Tell the main code what the endianness is if it is not overridden
1675 if (!set_target_endian
)
1677 set_target_endian
= 1;
1678 target_big_endian
= PPC_BIG_ENDIAN
;
1682 ppc_coff_debug_section
= coff_section_from_bfd_index (stdoutput
, N_DEBUG
);
1684 /* Create dummy symbols to serve as initial csects. This forces the
1685 text csects to precede the data csects. These symbols will not
1687 ppc_text_csects
= symbol_make ("dummy\001");
1688 symbol_get_tc (ppc_text_csects
)->within
= ppc_text_csects
;
1689 ppc_data_csects
= symbol_make ("dummy\001");
1690 symbol_get_tc (ppc_data_csects
)->within
= ppc_data_csects
;
1695 ppc_current_section
= text_section
;
1696 ppc_previous_section
= 0;
1705 if (ppc_apuinfo_list
== NULL
)
1708 /* Ok, so write the section info out. We have this layout:
1712 0 8 length of "APUinfo\0"
1713 4 (n*4) number of APU's (4 bytes each)
1716 20 APU#1 first APU's info
1717 24 APU#2 second APU's info
1722 asection
*seg
= now_seg
;
1723 subsegT subseg
= now_subseg
;
1724 asection
*apuinfo_secp
= (asection
*) NULL
;
1727 /* Create the .PPC.EMB.apuinfo section. */
1728 apuinfo_secp
= subseg_new (".PPC.EMB.apuinfo", 0);
1729 bfd_set_section_flags (stdoutput
,
1731 SEC_HAS_CONTENTS
| SEC_READONLY
);
1734 md_number_to_chars (p
, (valueT
) 8, 4);
1737 md_number_to_chars (p
, (valueT
) ppc_apuinfo_num
* 4, 4);
1740 md_number_to_chars (p
, (valueT
) 2, 4);
1743 strcpy (p
, "APUinfo");
1745 for (i
= 0; i
< ppc_apuinfo_num
; i
++)
1748 md_number_to_chars (p
, (valueT
) ppc_apuinfo_list
[i
], 4);
1751 frag_align (2, 0, 0);
1753 /* We probably can't restore the current segment, for there likely
1756 subseg_set (seg
, subseg
);
1761 /* Insert an operand value into an instruction. */
1763 static unsigned long
1764 ppc_insert_operand (unsigned long insn
,
1765 const struct powerpc_operand
*operand
,
1771 long min
, max
, right
;
1773 max
= operand
->bitm
;
1777 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
1779 if ((operand
->flags
& PPC_OPERAND_SIGNOPT
) == 0)
1780 max
= (max
>> 1) & -right
;
1781 min
= ~max
& -right
;
1784 if ((operand
->flags
& PPC_OPERAND_PLUS1
) != 0)
1787 if ((operand
->flags
& PPC_OPERAND_NEGATIVE
) != 0)
1796 /* Some people write constants with the sign extension done by
1797 hand but only up to 32 bits. This shouldn't really be valid,
1798 but, to permit this code to assemble on a 64-bit host, we
1799 sign extend the 32-bit value to 64 bits if so doing makes the
1802 && (offsetT
) (val
- 0x80000000 - 0x80000000) >= min
1803 && (offsetT
) (val
- 0x80000000 - 0x80000000) <= max
1804 && ((val
- 0x80000000 - 0x80000000) & (right
- 1)) == 0)
1805 val
= val
- 0x80000000 - 0x80000000;
1807 /* Similarly, people write expressions like ~(1<<15), and expect
1808 this to be OK for a 32-bit unsigned value. */
1810 && (offsetT
) (val
+ 0x80000000 + 0x80000000) >= min
1811 && (offsetT
) (val
+ 0x80000000 + 0x80000000) <= max
1812 && ((val
+ 0x80000000 + 0x80000000) & (right
- 1)) == 0)
1813 val
= val
+ 0x80000000 + 0x80000000;
1817 || (val
& (right
- 1)) != 0)
1818 as_bad_value_out_of_range (_("operand"), val
, min
, max
, file
, line
);
1821 if (operand
->insert
)
1826 insn
= (*operand
->insert
) (insn
, (long) val
, cpu
, &errmsg
);
1827 if (errmsg
!= (const char *) NULL
)
1828 as_bad_where (file
, line
, "%s", errmsg
);
1830 else if (operand
->shift
>= 0)
1831 insn
|= ((long) val
& operand
->bitm
) << operand
->shift
;
1833 insn
|= ((long) val
& operand
->bitm
) >> -operand
->shift
;
1840 /* Parse @got, etc. and return the desired relocation. */
1841 static bfd_reloc_code_real_type
1842 ppc_elf_suffix (char **str_p
, expressionS
*exp_p
)
1846 unsigned int length
: 8;
1847 unsigned int valid32
: 1;
1848 unsigned int valid64
: 1;
1857 const struct map_bfd
*ptr
;
1859 #define MAP(str, reloc) { str, sizeof (str) - 1, 1, 1, reloc }
1860 #define MAP32(str, reloc) { str, sizeof (str) - 1, 1, 0, reloc }
1861 #define MAP64(str, reloc) { str, sizeof (str) - 1, 0, 1, reloc }
1863 static const struct map_bfd mapping
[] = {
1864 MAP ("l", BFD_RELOC_LO16
),
1865 MAP ("h", BFD_RELOC_HI16
),
1866 MAP ("ha", BFD_RELOC_HI16_S
),
1867 MAP ("brtaken", BFD_RELOC_PPC_B16_BRTAKEN
),
1868 MAP ("brntaken", BFD_RELOC_PPC_B16_BRNTAKEN
),
1869 MAP ("got", BFD_RELOC_16_GOTOFF
),
1870 MAP ("got@l", BFD_RELOC_LO16_GOTOFF
),
1871 MAP ("got@h", BFD_RELOC_HI16_GOTOFF
),
1872 MAP ("got@ha", BFD_RELOC_HI16_S_GOTOFF
),
1873 MAP ("plt@l", BFD_RELOC_LO16_PLTOFF
),
1874 MAP ("plt@h", BFD_RELOC_HI16_PLTOFF
),
1875 MAP ("plt@ha", BFD_RELOC_HI16_S_PLTOFF
),
1876 MAP ("copy", BFD_RELOC_PPC_COPY
),
1877 MAP ("globdat", BFD_RELOC_PPC_GLOB_DAT
),
1878 MAP ("sectoff", BFD_RELOC_16_BASEREL
),
1879 MAP ("sectoff@l", BFD_RELOC_LO16_BASEREL
),
1880 MAP ("sectoff@h", BFD_RELOC_HI16_BASEREL
),
1881 MAP ("sectoff@ha", BFD_RELOC_HI16_S_BASEREL
),
1882 MAP ("tls", BFD_RELOC_PPC_TLS
),
1883 MAP ("dtpmod", BFD_RELOC_PPC_DTPMOD
),
1884 MAP ("dtprel", BFD_RELOC_PPC_DTPREL
),
1885 MAP ("dtprel@l", BFD_RELOC_PPC_DTPREL16_LO
),
1886 MAP ("dtprel@h", BFD_RELOC_PPC_DTPREL16_HI
),
1887 MAP ("dtprel@ha", BFD_RELOC_PPC_DTPREL16_HA
),
1888 MAP ("tprel", BFD_RELOC_PPC_TPREL
),
1889 MAP ("tprel@l", BFD_RELOC_PPC_TPREL16_LO
),
1890 MAP ("tprel@h", BFD_RELOC_PPC_TPREL16_HI
),
1891 MAP ("tprel@ha", BFD_RELOC_PPC_TPREL16_HA
),
1892 MAP ("got@tlsgd", BFD_RELOC_PPC_GOT_TLSGD16
),
1893 MAP ("got@tlsgd@l", BFD_RELOC_PPC_GOT_TLSGD16_LO
),
1894 MAP ("got@tlsgd@h", BFD_RELOC_PPC_GOT_TLSGD16_HI
),
1895 MAP ("got@tlsgd@ha", BFD_RELOC_PPC_GOT_TLSGD16_HA
),
1896 MAP ("got@tlsld", BFD_RELOC_PPC_GOT_TLSLD16
),
1897 MAP ("got@tlsld@l", BFD_RELOC_PPC_GOT_TLSLD16_LO
),
1898 MAP ("got@tlsld@h", BFD_RELOC_PPC_GOT_TLSLD16_HI
),
1899 MAP ("got@tlsld@ha", BFD_RELOC_PPC_GOT_TLSLD16_HA
),
1900 MAP ("got@dtprel", BFD_RELOC_PPC_GOT_DTPREL16
),
1901 MAP ("got@dtprel@l", BFD_RELOC_PPC_GOT_DTPREL16_LO
),
1902 MAP ("got@dtprel@h", BFD_RELOC_PPC_GOT_DTPREL16_HI
),
1903 MAP ("got@dtprel@ha", BFD_RELOC_PPC_GOT_DTPREL16_HA
),
1904 MAP ("got@tprel", BFD_RELOC_PPC_GOT_TPREL16
),
1905 MAP ("got@tprel@l", BFD_RELOC_PPC_GOT_TPREL16_LO
),
1906 MAP ("got@tprel@h", BFD_RELOC_PPC_GOT_TPREL16_HI
),
1907 MAP ("got@tprel@ha", BFD_RELOC_PPC_GOT_TPREL16_HA
),
1908 MAP32 ("fixup", BFD_RELOC_CTOR
),
1909 MAP32 ("plt", BFD_RELOC_24_PLT_PCREL
),
1910 MAP32 ("pltrel24", BFD_RELOC_24_PLT_PCREL
),
1911 MAP32 ("local24pc", BFD_RELOC_PPC_LOCAL24PC
),
1912 MAP32 ("local", BFD_RELOC_PPC_LOCAL24PC
),
1913 MAP32 ("pltrel", BFD_RELOC_32_PLT_PCREL
),
1914 MAP32 ("sdarel", BFD_RELOC_GPREL16
),
1915 MAP32 ("sdarel@l", BFD_RELOC_PPC_VLE_SDAREL_LO16A
),
1916 MAP32 ("sdarel@h", BFD_RELOC_PPC_VLE_SDAREL_HI16A
),
1917 MAP32 ("sdarel@ha", BFD_RELOC_PPC_VLE_SDAREL_HA16A
),
1918 MAP32 ("naddr", BFD_RELOC_PPC_EMB_NADDR32
),
1919 MAP32 ("naddr16", BFD_RELOC_PPC_EMB_NADDR16
),
1920 MAP32 ("naddr@l", BFD_RELOC_PPC_EMB_NADDR16_LO
),
1921 MAP32 ("naddr@h", BFD_RELOC_PPC_EMB_NADDR16_HI
),
1922 MAP32 ("naddr@ha", BFD_RELOC_PPC_EMB_NADDR16_HA
),
1923 MAP32 ("sdai16", BFD_RELOC_PPC_EMB_SDAI16
),
1924 MAP32 ("sda2rel", BFD_RELOC_PPC_EMB_SDA2REL
),
1925 MAP32 ("sda2i16", BFD_RELOC_PPC_EMB_SDA2I16
),
1926 MAP32 ("sda21", BFD_RELOC_PPC_EMB_SDA21
),
1927 MAP32 ("sda21@l", BFD_RELOC_PPC_VLE_SDA21_LO
),
1928 MAP32 ("mrkref", BFD_RELOC_PPC_EMB_MRKREF
),
1929 MAP32 ("relsect", BFD_RELOC_PPC_EMB_RELSEC16
),
1930 MAP32 ("relsect@l", BFD_RELOC_PPC_EMB_RELST_LO
),
1931 MAP32 ("relsect@h", BFD_RELOC_PPC_EMB_RELST_HI
),
1932 MAP32 ("relsect@ha", BFD_RELOC_PPC_EMB_RELST_HA
),
1933 MAP32 ("bitfld", BFD_RELOC_PPC_EMB_BIT_FLD
),
1934 MAP32 ("relsda", BFD_RELOC_PPC_EMB_RELSDA
),
1935 MAP32 ("xgot", BFD_RELOC_PPC_TOC16
),
1936 MAP64 ("high", BFD_RELOC_PPC64_ADDR16_HIGH
),
1937 MAP64 ("higha", BFD_RELOC_PPC64_ADDR16_HIGHA
),
1938 MAP64 ("higher", BFD_RELOC_PPC64_HIGHER
),
1939 MAP64 ("highera", BFD_RELOC_PPC64_HIGHER_S
),
1940 MAP64 ("highest", BFD_RELOC_PPC64_HIGHEST
),
1941 MAP64 ("highesta", BFD_RELOC_PPC64_HIGHEST_S
),
1942 MAP64 ("tocbase", BFD_RELOC_PPC64_TOC
),
1943 MAP64 ("toc", BFD_RELOC_PPC_TOC16
),
1944 MAP64 ("toc@l", BFD_RELOC_PPC64_TOC16_LO
),
1945 MAP64 ("toc@h", BFD_RELOC_PPC64_TOC16_HI
),
1946 MAP64 ("toc@ha", BFD_RELOC_PPC64_TOC16_HA
),
1947 MAP64 ("dtprel@high", BFD_RELOC_PPC64_DTPREL16_HIGH
),
1948 MAP64 ("dtprel@higha", BFD_RELOC_PPC64_DTPREL16_HIGHA
),
1949 MAP64 ("dtprel@higher", BFD_RELOC_PPC64_DTPREL16_HIGHER
),
1950 MAP64 ("dtprel@highera", BFD_RELOC_PPC64_DTPREL16_HIGHERA
),
1951 MAP64 ("dtprel@highest", BFD_RELOC_PPC64_DTPREL16_HIGHEST
),
1952 MAP64 ("dtprel@highesta", BFD_RELOC_PPC64_DTPREL16_HIGHESTA
),
1953 MAP64 ("localentry", BFD_RELOC_PPC64_ADDR64_LOCAL
),
1954 MAP64 ("tprel@high", BFD_RELOC_PPC64_TPREL16_HIGH
),
1955 MAP64 ("tprel@higha", BFD_RELOC_PPC64_TPREL16_HIGHA
),
1956 MAP64 ("tprel@higher", BFD_RELOC_PPC64_TPREL16_HIGHER
),
1957 MAP64 ("tprel@highera", BFD_RELOC_PPC64_TPREL16_HIGHERA
),
1958 MAP64 ("tprel@highest", BFD_RELOC_PPC64_TPREL16_HIGHEST
),
1959 MAP64 ("tprel@highesta", BFD_RELOC_PPC64_TPREL16_HIGHESTA
),
1960 { (char *) 0, 0, 0, 0, BFD_RELOC_UNUSED
}
1964 return BFD_RELOC_UNUSED
;
1966 for (ch
= *str
, str2
= ident
;
1967 (str2
< ident
+ sizeof (ident
) - 1
1968 && (ISALNUM (ch
) || ch
== '@'));
1971 *str2
++ = TOLOWER (ch
);
1978 for (ptr
= &mapping
[0]; ptr
->length
> 0; ptr
++)
1979 if (ch
== ptr
->string
[0]
1980 && len
== ptr
->length
1981 && memcmp (ident
, ptr
->string
, ptr
->length
) == 0
1982 && (ppc_obj64
? ptr
->valid64
: ptr
->valid32
))
1984 int reloc
= ptr
->reloc
;
1986 if (!ppc_obj64
&& exp_p
->X_add_number
!= 0)
1990 case BFD_RELOC_16_GOTOFF
:
1991 case BFD_RELOC_LO16_GOTOFF
:
1992 case BFD_RELOC_HI16_GOTOFF
:
1993 case BFD_RELOC_HI16_S_GOTOFF
:
1994 as_warn (_("identifier+constant@got means "
1995 "identifier@got+constant"));
1998 case BFD_RELOC_PPC_GOT_TLSGD16
:
1999 case BFD_RELOC_PPC_GOT_TLSGD16_LO
:
2000 case BFD_RELOC_PPC_GOT_TLSGD16_HI
:
2001 case BFD_RELOC_PPC_GOT_TLSGD16_HA
:
2002 case BFD_RELOC_PPC_GOT_TLSLD16
:
2003 case BFD_RELOC_PPC_GOT_TLSLD16_LO
:
2004 case BFD_RELOC_PPC_GOT_TLSLD16_HI
:
2005 case BFD_RELOC_PPC_GOT_TLSLD16_HA
:
2006 case BFD_RELOC_PPC_GOT_DTPREL16
:
2007 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
2008 case BFD_RELOC_PPC_GOT_DTPREL16_HI
:
2009 case BFD_RELOC_PPC_GOT_DTPREL16_HA
:
2010 case BFD_RELOC_PPC_GOT_TPREL16
:
2011 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
2012 case BFD_RELOC_PPC_GOT_TPREL16_HI
:
2013 case BFD_RELOC_PPC_GOT_TPREL16_HA
:
2014 as_bad (_("symbol+offset not supported for got tls"));
2019 /* Now check for identifier@suffix+constant. */
2020 if (*str
== '-' || *str
== '+')
2022 char *orig_line
= input_line_pointer
;
2023 expressionS new_exp
;
2025 input_line_pointer
= str
;
2026 expression (&new_exp
);
2027 if (new_exp
.X_op
== O_constant
)
2029 exp_p
->X_add_number
+= new_exp
.X_add_number
;
2030 str
= input_line_pointer
;
2033 if (&input_line_pointer
!= str_p
)
2034 input_line_pointer
= orig_line
;
2038 if (reloc
== (int) BFD_RELOC_PPC64_TOC
2039 && exp_p
->X_op
== O_symbol
2040 && strcmp (S_GET_NAME (exp_p
->X_add_symbol
), ".TOC.") == 0)
2042 /* Change the symbol so that the dummy .TOC. symbol can be
2043 omitted from the object file. */
2044 exp_p
->X_add_symbol
= &abs_symbol
;
2047 return (bfd_reloc_code_real_type
) reloc
;
2050 return BFD_RELOC_UNUSED
;
2053 /* Like normal .long/.short/.word, except support @got, etc.
2054 Clobbers input_line_pointer, checks end-of-line. */
2056 ppc_elf_cons (int nbytes
/* 1=.byte, 2=.word, 4=.long, 8=.llong */)
2059 bfd_reloc_code_real_type reloc
;
2061 if (is_it_end_of_statement ())
2063 demand_empty_rest_of_line ();
2070 if (*input_line_pointer
== '@'
2071 && (reloc
= ppc_elf_suffix (&input_line_pointer
,
2072 &exp
)) != BFD_RELOC_UNUSED
)
2074 reloc_howto_type
*reloc_howto
;
2077 reloc_howto
= bfd_reloc_type_lookup (stdoutput
, reloc
);
2078 size
= bfd_get_reloc_size (reloc_howto
);
2082 as_bad (_("%s relocations do not fit in %d bytes\n"),
2083 reloc_howto
->name
, nbytes
);
2090 p
= frag_more (nbytes
);
2091 memset (p
, 0, nbytes
);
2093 if (target_big_endian
)
2094 offset
= nbytes
- size
;
2095 fix_new_exp (frag_now
, p
- frag_now
->fr_literal
+ offset
, size
,
2100 emit_expr (&exp
, (unsigned int) nbytes
);
2102 while (*input_line_pointer
++ == ',');
2104 /* Put terminator back into stream. */
2105 input_line_pointer
--;
2106 demand_empty_rest_of_line ();
2109 /* Solaris pseduo op to change to the .rodata section. */
2111 ppc_elf_rdata (int xxx
)
2113 char *save_line
= input_line_pointer
;
2114 static char section
[] = ".rodata\n";
2116 /* Just pretend this is .section .rodata */
2117 input_line_pointer
= section
;
2118 obj_elf_section (xxx
);
2120 input_line_pointer
= save_line
;
2123 /* Pseudo op to make file scope bss items. */
2125 ppc_elf_lcomm (int xxx ATTRIBUTE_UNUSED
)
2138 name
= input_line_pointer
;
2139 c
= get_symbol_end ();
2141 /* just after name is now '\0'. */
2142 p
= input_line_pointer
;
2145 if (*input_line_pointer
!= ',')
2147 as_bad (_("expected comma after symbol-name: rest of line ignored."));
2148 ignore_rest_of_line ();
2152 input_line_pointer
++; /* skip ',' */
2153 if ((size
= get_absolute_expression ()) < 0)
2155 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) size
);
2156 ignore_rest_of_line ();
2160 /* The third argument to .lcomm is the alignment. */
2161 if (*input_line_pointer
!= ',')
2165 ++input_line_pointer
;
2166 align
= get_absolute_expression ();
2169 as_warn (_("ignoring bad alignment"));
2175 symbolP
= symbol_find_or_make (name
);
2178 if (S_IS_DEFINED (symbolP
) && ! S_IS_COMMON (symbolP
))
2180 as_bad (_("ignoring attempt to re-define symbol `%s'."),
2181 S_GET_NAME (symbolP
));
2182 ignore_rest_of_line ();
2186 if (S_GET_VALUE (symbolP
) && S_GET_VALUE (symbolP
) != (valueT
) size
)
2188 as_bad (_("length of .lcomm \"%s\" is already %ld. Not changed to %ld."),
2189 S_GET_NAME (symbolP
),
2190 (long) S_GET_VALUE (symbolP
),
2193 ignore_rest_of_line ();
2199 old_subsec
= now_subseg
;
2202 /* Convert to a power of 2 alignment. */
2203 for (align2
= 0; (align
& 1) == 0; align
>>= 1, ++align2
);
2206 as_bad (_("common alignment not a power of 2"));
2207 ignore_rest_of_line ();
2214 record_alignment (bss_section
, align2
);
2215 subseg_set (bss_section
, 1);
2217 frag_align (align2
, 0, 0);
2218 if (S_GET_SEGMENT (symbolP
) == bss_section
)
2219 symbol_get_frag (symbolP
)->fr_symbol
= 0;
2220 symbol_set_frag (symbolP
, frag_now
);
2221 pfrag
= frag_var (rs_org
, 1, 1, (relax_substateT
) 0, symbolP
, size
,
2224 S_SET_SIZE (symbolP
, size
);
2225 S_SET_SEGMENT (symbolP
, bss_section
);
2226 subseg_set (old_sec
, old_subsec
);
2227 demand_empty_rest_of_line ();
2230 /* Pseudo op to set symbol local entry point. */
2232 ppc_elf_localentry (int ignore ATTRIBUTE_UNUSED
)
2234 char *name
= input_line_pointer
;
2235 char c
= get_symbol_end ();
2240 elf_symbol_type
*elfsym
;
2242 p
= input_line_pointer
;
2245 if (*input_line_pointer
!= ',')
2248 as_bad (_("expected comma after name `%s' in .localentry directive"),
2251 ignore_rest_of_line ();
2254 input_line_pointer
++;
2256 if (exp
.X_op
== O_absent
)
2258 as_bad (_("missing expression in .localentry directive"));
2259 exp
.X_op
= O_constant
;
2260 exp
.X_add_number
= 0;
2263 sym
= symbol_find_or_make (name
);
2266 if (resolve_expression (&exp
)
2267 && exp
.X_op
== O_constant
)
2269 unsigned char encoded
= PPC64_SET_LOCAL_ENTRY_OFFSET (exp
.X_add_number
);
2271 if (exp
.X_add_number
!= (offsetT
) PPC64_LOCAL_ENTRY_OFFSET (encoded
))
2272 as_bad (_(".localentry expression for `%s' "
2273 "is not a valid power of 2"), S_GET_NAME (sym
));
2276 bfdsym
= symbol_get_bfdsym (sym
);
2277 elfsym
= elf_symbol_from (bfd_asymbol_bfd (bfdsym
), bfdsym
);
2278 gas_assert (elfsym
);
2279 elfsym
->internal_elf_sym
.st_other
&= ~STO_PPC64_LOCAL_MASK
;
2280 elfsym
->internal_elf_sym
.st_other
|= encoded
;
2281 if (ppc_abiversion
== 0)
2286 as_bad (_(".localentry expression for `%s' "
2287 "does not evaluate to a constant"), S_GET_NAME (sym
));
2289 demand_empty_rest_of_line ();
2292 /* Pseudo op to set ABI version. */
2294 ppc_elf_abiversion (int ignore ATTRIBUTE_UNUSED
)
2299 if (exp
.X_op
== O_absent
)
2301 as_bad (_("missing expression in .abiversion directive"));
2302 exp
.X_op
= O_constant
;
2303 exp
.X_add_number
= 0;
2306 if (resolve_expression (&exp
)
2307 && exp
.X_op
== O_constant
)
2308 ppc_abiversion
= exp
.X_add_number
;
2310 as_bad (_(".abiversion expression does not evaluate to a constant"));
2311 demand_empty_rest_of_line ();
2314 /* Set ABI version in output file. */
2318 if (ppc_obj64
&& ppc_abiversion
!= 0)
2320 elf_elfheader (stdoutput
)->e_flags
&= ~EF_PPC64_ABI
;
2321 elf_elfheader (stdoutput
)->e_flags
|= ppc_abiversion
& EF_PPC64_ABI
;
2325 /* Validate any relocations emitted for -mrelocatable, possibly adding
2326 fixups for word relocations in writable segments, so we can adjust
2329 ppc_elf_validate_fix (fixS
*fixp
, segT seg
)
2331 if (fixp
->fx_done
|| fixp
->fx_pcrel
)
2340 case SHLIB_MRELOCATABLE
:
2341 if (fixp
->fx_r_type
<= BFD_RELOC_UNUSED
2342 && fixp
->fx_r_type
!= BFD_RELOC_16_GOTOFF
2343 && fixp
->fx_r_type
!= BFD_RELOC_HI16_GOTOFF
2344 && fixp
->fx_r_type
!= BFD_RELOC_LO16_GOTOFF
2345 && fixp
->fx_r_type
!= BFD_RELOC_HI16_S_GOTOFF
2346 && fixp
->fx_r_type
!= BFD_RELOC_16_BASEREL
2347 && fixp
->fx_r_type
!= BFD_RELOC_LO16_BASEREL
2348 && fixp
->fx_r_type
!= BFD_RELOC_HI16_BASEREL
2349 && fixp
->fx_r_type
!= BFD_RELOC_HI16_S_BASEREL
2350 && (seg
->flags
& SEC_LOAD
) != 0
2351 && strcmp (segment_name (seg
), ".got2") != 0
2352 && strcmp (segment_name (seg
), ".dtors") != 0
2353 && strcmp (segment_name (seg
), ".ctors") != 0
2354 && strcmp (segment_name (seg
), ".fixup") != 0
2355 && strcmp (segment_name (seg
), ".gcc_except_table") != 0
2356 && strcmp (segment_name (seg
), ".eh_frame") != 0
2357 && strcmp (segment_name (seg
), ".ex_shared") != 0)
2359 if ((seg
->flags
& (SEC_READONLY
| SEC_CODE
)) != 0
2360 || fixp
->fx_r_type
!= BFD_RELOC_CTOR
)
2362 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
2363 _("relocation cannot be done when using -mrelocatable"));
2370 /* Prevent elf_frob_file_before_adjust removing a weak undefined
2371 function descriptor sym if the corresponding code sym is used. */
2374 ppc_frob_file_before_adjust (void)
2382 for (symp
= symbol_rootP
; symp
; symp
= symbol_next (symp
))
2389 name
= S_GET_NAME (symp
);
2393 if (! S_IS_WEAK (symp
)
2394 || S_IS_DEFINED (symp
))
2397 len
= strlen (name
) + 1;
2398 dotname
= xmalloc (len
+ 1);
2400 memcpy (dotname
+ 1, name
, len
);
2401 dotsym
= symbol_find_noref (dotname
, 1);
2403 if (dotsym
!= NULL
&& (symbol_used_p (dotsym
)
2404 || symbol_used_in_reloc_p (dotsym
)))
2405 symbol_mark_used (symp
);
2409 toc
= bfd_get_section_by_name (stdoutput
, ".toc");
2411 && toc_reloc_types
!= has_large_toc_reloc
2412 && bfd_section_size (stdoutput
, toc
) > 0x10000)
2413 as_warn (_("TOC section size exceeds 64k"));
2416 /* .TOC. used in an opd entry as .TOC.@tocbase doesn't need to be
2417 emitted. Other uses of .TOC. will cause the symbol to be marked
2418 with BSF_KEEP in md_apply_fix. */
2421 ppc_elf_adjust_symtab (void)
2426 symp
= symbol_find (".TOC.");
2429 asymbol
*bsym
= symbol_get_bfdsym (symp
);
2430 if ((bsym
->flags
& BSF_KEEP
) == 0)
2431 symbol_remove (symp
, &symbol_rootP
, &symbol_lastP
);
2435 #endif /* OBJ_ELF */
2440 * Summary of parse_toc_entry.
2442 * in: Input_line_pointer points to the '[' in one of:
2444 * [toc] [tocv] [toc32] [toc64]
2446 * Anything else is an error of one kind or another.
2449 * return value: success or failure
2450 * toc_kind: kind of toc reference
2451 * input_line_pointer:
2452 * success: first char after the ']'
2453 * failure: unchanged
2457 * [toc] - rv == success, toc_kind = default_toc
2458 * [tocv] - rv == success, toc_kind = data_in_toc
2459 * [toc32] - rv == success, toc_kind = must_be_32
2460 * [toc64] - rv == success, toc_kind = must_be_64
2464 enum toc_size_qualifier
2466 default_toc
, /* The toc cell constructed should be the system default size */
2467 data_in_toc
, /* This is a direct reference to a toc cell */
2468 must_be_32
, /* The toc cell constructed must be 32 bits wide */
2469 must_be_64
/* The toc cell constructed must be 64 bits wide */
2473 parse_toc_entry (enum toc_size_qualifier
*toc_kind
)
2478 enum toc_size_qualifier t
;
2480 /* Save the input_line_pointer. */
2481 start
= input_line_pointer
;
2483 /* Skip over the '[' , and whitespace. */
2484 ++input_line_pointer
;
2487 /* Find the spelling of the operand. */
2488 toc_spec
= input_line_pointer
;
2489 c
= get_symbol_end ();
2491 if (strcmp (toc_spec
, "toc") == 0)
2495 else if (strcmp (toc_spec
, "tocv") == 0)
2499 else if (strcmp (toc_spec
, "toc32") == 0)
2503 else if (strcmp (toc_spec
, "toc64") == 0)
2509 as_bad (_("syntax error: invalid toc specifier `%s'"), toc_spec
);
2510 *input_line_pointer
= c
;
2511 input_line_pointer
= start
;
2515 /* Now find the ']'. */
2516 *input_line_pointer
= c
;
2518 SKIP_WHITESPACE (); /* leading whitespace could be there. */
2519 c
= *input_line_pointer
++; /* input_line_pointer->past char in c. */
2523 as_bad (_("syntax error: expected `]', found `%c'"), c
);
2524 input_line_pointer
= start
;
2533 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
2534 /* See whether a symbol is in the TOC section. */
2537 ppc_is_toc_sym (symbolS
*sym
)
2540 return (symbol_get_tc (sym
)->symbol_class
== XMC_TC
2541 || symbol_get_tc (sym
)->symbol_class
== XMC_TC0
);
2544 const char *sname
= segment_name (S_GET_SEGMENT (sym
));
2546 return strcmp (sname
, ".toc") == 0;
2548 return strcmp (sname
, ".got") == 0;
2551 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
2555 #define APUID(a,v) ((((a) & 0xffff) << 16) | ((v) & 0xffff))
2557 ppc_apuinfo_section_add (unsigned int apu
, unsigned int version
)
2561 /* Check we don't already exist. */
2562 for (i
= 0; i
< ppc_apuinfo_num
; i
++)
2563 if (ppc_apuinfo_list
[i
] == APUID (apu
, version
))
2566 if (ppc_apuinfo_num
== ppc_apuinfo_num_alloc
)
2568 if (ppc_apuinfo_num_alloc
== 0)
2570 ppc_apuinfo_num_alloc
= 4;
2571 ppc_apuinfo_list
= (unsigned long *)
2572 xmalloc (sizeof (unsigned long) * ppc_apuinfo_num_alloc
);
2576 ppc_apuinfo_num_alloc
+= 4;
2577 ppc_apuinfo_list
= (unsigned long *) xrealloc (ppc_apuinfo_list
,
2578 sizeof (unsigned long) * ppc_apuinfo_num_alloc
);
2581 ppc_apuinfo_list
[ppc_apuinfo_num
++] = APUID (apu
, version
);
2587 /* We need to keep a list of fixups. We can't simply generate them as
2588 we go, because that would require us to first create the frag, and
2589 that would screw up references to ``.''. */
2595 bfd_reloc_code_real_type reloc
;
2598 #define MAX_INSN_FIXUPS (5)
2601 #define E_OR2I_INSN 0x7000C000
2602 #define E_AND2I_DOT_INSN 0x7000C800
2603 #define E_OR2IS_INSN 0x7000D000
2604 #define E_LIS_INSN 0x7000E000
2605 #define E_AND2IS_DOT_INSN 0x7000E800
2608 #define E_ADD2I_DOT_INSN 0x70008800
2609 #define E_ADD2IS_INSN 0x70009000
2610 #define E_CMP16I_INSN 0x70009800
2611 #define E_MULL2I_INSN 0x7000A000
2612 #define E_CMPL16I_INSN 0x7000A800
2613 #define E_CMPH16I_INSN 0x7000B000
2614 #define E_CMPHL16I_INSN 0x7000B800
2616 /* This routine is called for each instruction to be assembled. */
2619 md_assemble (char *str
)
2622 const struct powerpc_opcode
*opcode
;
2624 const unsigned char *opindex_ptr
;
2628 struct ppc_fixup fixups
[MAX_INSN_FIXUPS
];
2633 unsigned int insn_length
;
2635 /* Get the opcode. */
2636 for (s
= str
; *s
!= '\0' && ! ISSPACE (*s
); s
++)
2641 /* Look up the opcode in the hash table. */
2642 opcode
= (const struct powerpc_opcode
*) hash_find (ppc_hash
, str
);
2643 if (opcode
== (const struct powerpc_opcode
*) NULL
)
2645 const struct powerpc_macro
*macro
;
2647 macro
= (const struct powerpc_macro
*) hash_find (ppc_macro_hash
, str
);
2648 if (macro
== (const struct powerpc_macro
*) NULL
)
2649 as_bad (_("unrecognized opcode: `%s'"), str
);
2651 ppc_macro (s
, macro
);
2656 insn
= opcode
->opcode
;
2659 while (ISSPACE (*str
))
2662 /* PowerPC operands are just expressions. The only real issue is
2663 that a few operand types are optional. All cases which might use
2664 an optional operand separate the operands only with commas (in some
2665 cases parentheses are used, as in ``lwz 1,0(1)'' but such cases never
2666 have optional operands). Most instructions with optional operands
2667 have only one. Those that have more than one optional operand can
2668 take either all their operands or none. So, before we start seriously
2669 parsing the operands, we check to see if we have optional operands,
2670 and if we do, we count the number of commas to see which operands
2671 have been omitted. */
2673 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
2675 const struct powerpc_operand
*operand
;
2677 operand
= &powerpc_operands
[*opindex_ptr
];
2678 if ((operand
->flags
& PPC_OPERAND_OPTIONAL
) != 0)
2680 unsigned int opcount
;
2681 unsigned int num_operands_expected
;
2683 /* There is an optional operand. Count the number of
2684 commas in the input line. */
2691 while ((s
= strchr (s
, ',')) != (char *) NULL
)
2698 /* Compute the number of expected operands.
2699 Do not count fake operands. */
2700 for (num_operands_expected
= 0, i
= 0; opcode
->operands
[i
]; i
++)
2701 if ((powerpc_operands
[opcode
->operands
[i
]].flags
& PPC_OPERAND_FAKE
) == 0)
2702 ++ num_operands_expected
;
2704 /* If there are fewer operands in the line then are called
2705 for by the instruction, we want to skip the optional
2707 if (opcount
< num_operands_expected
)
2714 /* Gather the operands. */
2718 for (opindex_ptr
= opcode
->operands
; *opindex_ptr
!= 0; opindex_ptr
++)
2720 const struct powerpc_operand
*operand
;
2726 if (next_opindex
== 0)
2727 operand
= &powerpc_operands
[*opindex_ptr
];
2730 operand
= &powerpc_operands
[next_opindex
];
2735 /* If this is a fake operand, then we do not expect anything
2737 if ((operand
->flags
& PPC_OPERAND_FAKE
) != 0)
2739 insn
= (*operand
->insert
) (insn
, 0L, ppc_cpu
, &errmsg
);
2740 if (errmsg
!= (const char *) NULL
)
2741 as_bad ("%s", errmsg
);
2745 /* If this is an optional operand, and we are skipping it, just
2747 if ((operand
->flags
& PPC_OPERAND_OPTIONAL
) != 0
2750 if (operand
->insert
)
2752 insn
= (*operand
->insert
) (insn
, 0L, ppc_cpu
, &errmsg
);
2753 if (errmsg
!= (const char *) NULL
)
2754 as_bad ("%s", errmsg
);
2756 if ((operand
->flags
& PPC_OPERAND_NEXT
) != 0)
2757 next_opindex
= *opindex_ptr
+ 1;
2761 /* Gather the operand. */
2762 hold
= input_line_pointer
;
2763 input_line_pointer
= str
;
2766 if (*input_line_pointer
== '[')
2768 /* We are expecting something like the second argument here:
2770 * lwz r4,[toc].GS.0.static_int(rtoc)
2771 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2772 * The argument following the `]' must be a symbol name, and the
2773 * register must be the toc register: 'rtoc' or '2'
2775 * The effect is to 0 as the displacement field
2776 * in the instruction, and issue an IMAGE_REL_PPC_TOCREL16 (or
2777 * the appropriate variation) reloc against it based on the symbol.
2778 * The linker will build the toc, and insert the resolved toc offset.
2781 * o The size of the toc entry is currently assumed to be
2782 * 32 bits. This should not be assumed to be a hard coded
2784 * o In an effort to cope with a change from 32 to 64 bits,
2785 * there are also toc entries that are specified to be
2786 * either 32 or 64 bits:
2787 * lwz r4,[toc32].GS.0.static_int(rtoc)
2788 * lwz r4,[toc64].GS.0.static_int(rtoc)
2789 * These demand toc entries of the specified size, and the
2790 * instruction probably requires it.
2794 enum toc_size_qualifier toc_kind
;
2795 bfd_reloc_code_real_type toc_reloc
;
2797 /* Go parse off the [tocXX] part. */
2798 valid_toc
= parse_toc_entry (&toc_kind
);
2802 ignore_rest_of_line ();
2806 /* Now get the symbol following the ']'. */
2812 /* In this case, we may not have seen the symbol yet,
2813 since it is allowed to appear on a .extern or .globl
2814 or just be a label in the .data section. */
2815 toc_reloc
= BFD_RELOC_PPC_TOC16
;
2818 /* 1. The symbol must be defined and either in the toc
2819 section, or a global.
2820 2. The reloc generated must have the TOCDEFN flag set
2821 in upper bit mess of the reloc type.
2822 FIXME: It's a little confusing what the tocv
2823 qualifier can be used for. At the very least, I've
2824 seen three uses, only one of which I'm sure I can
2826 if (ex
.X_op
== O_symbol
)
2828 gas_assert (ex
.X_add_symbol
!= NULL
);
2829 if (symbol_get_bfdsym (ex
.X_add_symbol
)->section
2832 as_bad (_("[tocv] symbol is not a toc symbol"));
2836 toc_reloc
= BFD_RELOC_PPC_TOC16
;
2839 /* FIXME: these next two specifically specify 32/64 bit
2840 toc entries. We don't support them today. Is this
2841 the right way to say that? */
2842 toc_reloc
= BFD_RELOC_UNUSED
;
2843 as_bad (_("unimplemented toc32 expression modifier"));
2846 /* FIXME: see above. */
2847 toc_reloc
= BFD_RELOC_UNUSED
;
2848 as_bad (_("unimplemented toc64 expression modifier"));
2852 _("Unexpected return value [%d] from parse_toc_entry!\n"),
2858 /* We need to generate a fixup for this expression. */
2859 if (fc
>= MAX_INSN_FIXUPS
)
2860 as_fatal (_("too many fixups"));
2862 fixups
[fc
].reloc
= toc_reloc
;
2863 fixups
[fc
].exp
= ex
;
2864 fixups
[fc
].opindex
= *opindex_ptr
;
2867 /* Ok. We've set up the fixup for the instruction. Now make it
2868 look like the constant 0 was found here. */
2870 ex
.X_op
= O_constant
;
2871 ex
.X_add_number
= 0;
2872 ex
.X_add_symbol
= NULL
;
2873 ex
.X_op_symbol
= NULL
;
2880 && (((operand
->flags
& PPC_OPERAND_CR_BIT
) != 0)
2881 || ((operand
->flags
& PPC_OPERAND_CR_REG
) != 0)))
2882 || !register_name (&ex
))
2884 char save_lex
= lex_type
['%'];
2886 if (((operand
->flags
& PPC_OPERAND_CR_REG
) != 0)
2887 || (operand
->flags
& PPC_OPERAND_CR_BIT
) != 0)
2890 lex_type
['%'] |= LEX_BEGIN_NAME
;
2894 lex_type
['%'] = save_lex
;
2898 str
= input_line_pointer
;
2899 input_line_pointer
= hold
;
2901 if (ex
.X_op
== O_illegal
)
2902 as_bad (_("illegal operand"));
2903 else if (ex
.X_op
== O_absent
)
2904 as_bad (_("missing operand"));
2905 else if (ex
.X_op
== O_register
)
2907 insn
= ppc_insert_operand (insn
, operand
, ex
.X_add_number
,
2908 ppc_cpu
, (char *) NULL
, 0);
2910 else if (ex
.X_op
== O_constant
)
2913 /* Allow @HA, @L, @H on constants. */
2914 bfd_reloc_code_real_type reloc
;
2915 char *orig_str
= str
;
2917 if ((reloc
= ppc_elf_suffix (&str
, &ex
)) != BFD_RELOC_UNUSED
)
2924 case BFD_RELOC_LO16
:
2925 ex
.X_add_number
&= 0xffff;
2926 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2927 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2930 case BFD_RELOC_HI16
:
2931 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
2933 /* PowerPC64 @h is tested for overflow. */
2934 ex
.X_add_number
= (addressT
) ex
.X_add_number
>> 16;
2935 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2937 addressT sign
= (((addressT
) -1 >> 16) + 1) >> 1;
2939 = ((addressT
) ex
.X_add_number
^ sign
) - sign
;
2945 case BFD_RELOC_PPC64_ADDR16_HIGH
:
2946 ex
.X_add_number
= PPC_HI (ex
.X_add_number
);
2947 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2948 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2951 case BFD_RELOC_HI16_S
:
2952 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
2954 /* PowerPC64 @ha is tested for overflow. */
2956 = ((addressT
) ex
.X_add_number
+ 0x8000) >> 16;
2957 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2959 addressT sign
= (((addressT
) -1 >> 16) + 1) >> 1;
2961 = ((addressT
) ex
.X_add_number
^ sign
) - sign
;
2967 case BFD_RELOC_PPC64_ADDR16_HIGHA
:
2968 ex
.X_add_number
= PPC_HA (ex
.X_add_number
);
2969 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2970 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2973 case BFD_RELOC_PPC64_HIGHER
:
2974 ex
.X_add_number
= PPC_HIGHER (ex
.X_add_number
);
2975 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2976 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2979 case BFD_RELOC_PPC64_HIGHER_S
:
2980 ex
.X_add_number
= PPC_HIGHERA (ex
.X_add_number
);
2981 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2982 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2985 case BFD_RELOC_PPC64_HIGHEST
:
2986 ex
.X_add_number
= PPC_HIGHEST (ex
.X_add_number
);
2987 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2988 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2991 case BFD_RELOC_PPC64_HIGHEST_S
:
2992 ex
.X_add_number
= PPC_HIGHESTA (ex
.X_add_number
);
2993 if ((operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
2994 ex
.X_add_number
= SEX16 (ex
.X_add_number
);
2997 #endif /* OBJ_ELF */
2998 insn
= ppc_insert_operand (insn
, operand
, ex
.X_add_number
,
2999 ppc_cpu
, (char *) NULL
, 0);
3003 bfd_reloc_code_real_type reloc
= BFD_RELOC_UNUSED
;
3005 if (ex
.X_op
== O_symbol
&& str
[0] == '(')
3007 const char *sym_name
= S_GET_NAME (ex
.X_add_symbol
);
3008 if (sym_name
[0] == '.')
3011 if (strcasecmp (sym_name
, "__tls_get_addr") == 0)
3013 expressionS tls_exp
;
3015 hold
= input_line_pointer
;
3016 input_line_pointer
= str
+ 1;
3017 expression (&tls_exp
);
3018 if (tls_exp
.X_op
== O_symbol
)
3020 reloc
= BFD_RELOC_UNUSED
;
3021 if (strncasecmp (input_line_pointer
, "@tlsgd)", 7) == 0)
3023 reloc
= BFD_RELOC_PPC_TLSGD
;
3024 input_line_pointer
+= 7;
3026 else if (strncasecmp (input_line_pointer
, "@tlsld)", 7) == 0)
3028 reloc
= BFD_RELOC_PPC_TLSLD
;
3029 input_line_pointer
+= 7;
3031 if (reloc
!= BFD_RELOC_UNUSED
)
3034 str
= input_line_pointer
;
3036 if (fc
>= MAX_INSN_FIXUPS
)
3037 as_fatal (_("too many fixups"));
3038 fixups
[fc
].exp
= tls_exp
;
3039 fixups
[fc
].opindex
= *opindex_ptr
;
3040 fixups
[fc
].reloc
= reloc
;
3044 input_line_pointer
= hold
;
3048 if ((reloc
= ppc_elf_suffix (&str
, &ex
)) != BFD_RELOC_UNUSED
)
3050 /* Some TLS tweaks. */
3056 case BFD_RELOC_PPC_TLS
:
3057 if (!_bfd_elf_ppc_at_tls_transform (opcode
->opcode
, 0))
3058 as_bad (_("@tls may not be used with \"%s\" operands"),
3060 else if (operand
->shift
!= 11)
3061 as_bad (_("@tls may only be used in last operand"));
3063 insn
= ppc_insert_operand (insn
, operand
,
3065 ppc_cpu
, (char *) NULL
, 0);
3068 /* We'll only use the 32 (or 64) bit form of these relocations
3069 in constants. Instructions get the 16 bit form. */
3070 case BFD_RELOC_PPC_DTPREL
:
3071 reloc
= BFD_RELOC_PPC_DTPREL16
;
3073 case BFD_RELOC_PPC_TPREL
:
3074 reloc
= BFD_RELOC_PPC_TPREL16
;
3078 /* If VLE-mode convert LO/HI/HA relocations. */
3079 if (opcode
->flags
& PPC_OPCODE_VLE
)
3081 int tmp_insn
= insn
& opcode
->mask
;
3083 int use_d_reloc
= (tmp_insn
== E_OR2I_INSN
3084 || tmp_insn
== E_AND2I_DOT_INSN
3085 || tmp_insn
== E_OR2IS_INSN
3086 || tmp_insn
== E_LIS_INSN
3087 || tmp_insn
== E_AND2IS_DOT_INSN
);
3090 int use_a_reloc
= (tmp_insn
== E_ADD2I_DOT_INSN
3091 || tmp_insn
== E_ADD2IS_INSN
3092 || tmp_insn
== E_CMP16I_INSN
3093 || tmp_insn
== E_MULL2I_INSN
3094 || tmp_insn
== E_CMPL16I_INSN
3095 || tmp_insn
== E_CMPH16I_INSN
3096 || tmp_insn
== E_CMPHL16I_INSN
);
3103 case BFD_RELOC_PPC_EMB_SDA21
:
3104 reloc
= BFD_RELOC_PPC_VLE_SDA21
;
3107 case BFD_RELOC_LO16
:
3109 reloc
= BFD_RELOC_PPC_VLE_LO16D
;
3110 else if (use_a_reloc
)
3111 reloc
= BFD_RELOC_PPC_VLE_LO16A
;
3114 case BFD_RELOC_HI16
:
3116 reloc
= BFD_RELOC_PPC_VLE_HI16D
;
3117 else if (use_a_reloc
)
3118 reloc
= BFD_RELOC_PPC_VLE_HI16A
;
3121 case BFD_RELOC_HI16_S
:
3123 reloc
= BFD_RELOC_PPC_VLE_HA16D
;
3124 else if (use_a_reloc
)
3125 reloc
= BFD_RELOC_PPC_VLE_HA16A
;
3128 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
3130 reloc
= BFD_RELOC_PPC_VLE_SDAREL_LO16D
;
3133 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
3135 reloc
= BFD_RELOC_PPC_VLE_SDAREL_HI16D
;
3138 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
3140 reloc
= BFD_RELOC_PPC_VLE_SDAREL_HA16D
;
3145 #endif /* OBJ_ELF */
3147 if (reloc
!= BFD_RELOC_UNUSED
)
3149 /* Determine a BFD reloc value based on the operand information.
3150 We are only prepared to turn a few of the operands into
3152 else if ((operand
->flags
& (PPC_OPERAND_RELATIVE
3153 | PPC_OPERAND_ABSOLUTE
)) != 0
3154 && operand
->bitm
== 0x3fffffc
3155 && operand
->shift
== 0)
3156 reloc
= BFD_RELOC_PPC_B26
;
3157 else if ((operand
->flags
& (PPC_OPERAND_RELATIVE
3158 | PPC_OPERAND_ABSOLUTE
)) != 0
3159 && operand
->bitm
== 0xfffc
3160 && operand
->shift
== 0)
3161 reloc
= BFD_RELOC_PPC_B16
;
3162 else if ((operand
->flags
& PPC_OPERAND_RELATIVE
) != 0
3163 && operand
->bitm
== 0x1fe
3164 && operand
->shift
== -1)
3165 reloc
= BFD_RELOC_PPC_VLE_REL8
;
3166 else if ((operand
->flags
& PPC_OPERAND_RELATIVE
) != 0
3167 && operand
->bitm
== 0xfffe
3168 && operand
->shift
== 0)
3169 reloc
= BFD_RELOC_PPC_VLE_REL15
;
3170 else if ((operand
->flags
& PPC_OPERAND_RELATIVE
) != 0
3171 && operand
->bitm
== 0x1fffffe
3172 && operand
->shift
== 0)
3173 reloc
= BFD_RELOC_PPC_VLE_REL24
;
3174 else if ((operand
->flags
& PPC_OPERAND_NEGATIVE
) == 0
3175 && (operand
->bitm
& 0xfff0) == 0xfff0
3176 && operand
->shift
== 0)
3178 reloc
= BFD_RELOC_16
;
3179 #if defined OBJ_XCOFF || defined OBJ_ELF
3180 /* Note: the symbol may be not yet defined. */
3181 if ((operand
->flags
& PPC_OPERAND_PARENS
) != 0
3182 && ppc_is_toc_sym (ex
.X_add_symbol
))
3184 reloc
= BFD_RELOC_PPC_TOC16
;
3186 as_warn (_("assuming %s on symbol"),
3187 ppc_obj64
? "@toc" : "@xgot");
3193 /* For the absolute forms of branches, convert the PC
3194 relative form back into the absolute. */
3195 if ((operand
->flags
& PPC_OPERAND_ABSOLUTE
) != 0)
3199 case BFD_RELOC_PPC_B26
:
3200 reloc
= BFD_RELOC_PPC_BA26
;
3202 case BFD_RELOC_PPC_B16
:
3203 reloc
= BFD_RELOC_PPC_BA16
;
3206 case BFD_RELOC_PPC_B16_BRTAKEN
:
3207 reloc
= BFD_RELOC_PPC_BA16_BRTAKEN
;
3209 case BFD_RELOC_PPC_B16_BRNTAKEN
:
3210 reloc
= BFD_RELOC_PPC_BA16_BRNTAKEN
;
3221 case BFD_RELOC_PPC_TOC16
:
3222 toc_reloc_types
|= has_small_toc_reloc
;
3224 case BFD_RELOC_PPC64_TOC16_LO
:
3225 case BFD_RELOC_PPC64_TOC16_HI
:
3226 case BFD_RELOC_PPC64_TOC16_HA
:
3227 toc_reloc_types
|= has_large_toc_reloc
;
3234 && (operand
->flags
& (PPC_OPERAND_DS
| PPC_OPERAND_DQ
)) != 0)
3239 reloc
= BFD_RELOC_PPC64_ADDR16_DS
;
3241 case BFD_RELOC_LO16
:
3242 reloc
= BFD_RELOC_PPC64_ADDR16_LO_DS
;
3244 case BFD_RELOC_16_GOTOFF
:
3245 reloc
= BFD_RELOC_PPC64_GOT16_DS
;
3247 case BFD_RELOC_LO16_GOTOFF
:
3248 reloc
= BFD_RELOC_PPC64_GOT16_LO_DS
;
3250 case BFD_RELOC_LO16_PLTOFF
:
3251 reloc
= BFD_RELOC_PPC64_PLT16_LO_DS
;
3253 case BFD_RELOC_16_BASEREL
:
3254 reloc
= BFD_RELOC_PPC64_SECTOFF_DS
;
3256 case BFD_RELOC_LO16_BASEREL
:
3257 reloc
= BFD_RELOC_PPC64_SECTOFF_LO_DS
;
3259 case BFD_RELOC_PPC_TOC16
:
3260 reloc
= BFD_RELOC_PPC64_TOC16_DS
;
3262 case BFD_RELOC_PPC64_TOC16_LO
:
3263 reloc
= BFD_RELOC_PPC64_TOC16_LO_DS
;
3265 case BFD_RELOC_PPC64_PLTGOT16
:
3266 reloc
= BFD_RELOC_PPC64_PLTGOT16_DS
;
3268 case BFD_RELOC_PPC64_PLTGOT16_LO
:
3269 reloc
= BFD_RELOC_PPC64_PLTGOT16_LO_DS
;
3271 case BFD_RELOC_PPC_DTPREL16
:
3272 reloc
= BFD_RELOC_PPC64_DTPREL16_DS
;
3274 case BFD_RELOC_PPC_DTPREL16_LO
:
3275 reloc
= BFD_RELOC_PPC64_DTPREL16_LO_DS
;
3277 case BFD_RELOC_PPC_TPREL16
:
3278 reloc
= BFD_RELOC_PPC64_TPREL16_DS
;
3280 case BFD_RELOC_PPC_TPREL16_LO
:
3281 reloc
= BFD_RELOC_PPC64_TPREL16_LO_DS
;
3283 case BFD_RELOC_PPC_GOT_DTPREL16
:
3284 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
3285 case BFD_RELOC_PPC_GOT_TPREL16
:
3286 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
3289 as_bad (_("unsupported relocation for DS offset field"));
3295 /* We need to generate a fixup for this expression. */
3296 if (fc
>= MAX_INSN_FIXUPS
)
3297 as_fatal (_("too many fixups"));
3298 fixups
[fc
].exp
= ex
;
3299 fixups
[fc
].opindex
= *opindex_ptr
;
3300 fixups
[fc
].reloc
= reloc
;
3308 /* If expecting more operands, then we want to see "),". */
3309 if (*str
== endc
&& opindex_ptr
[1] != 0)
3313 while (ISSPACE (*str
));
3317 else if ((operand
->flags
& PPC_OPERAND_PARENS
) != 0)
3325 /* The call to expression should have advanced str past any
3328 && (endc
!= ',' || *str
!= '\0'))
3331 as_bad (_("syntax error; end of line, expected `%c'"), endc
);
3333 as_bad (_("syntax error; found `%c', expected `%c'"), *str
, endc
);
3341 while (ISSPACE (*str
))
3345 as_bad (_("junk at end of line: `%s'"), str
);
3348 /* Do we need/want an APUinfo section? */
3349 if ((ppc_cpu
& (PPC_OPCODE_E500
| PPC_OPCODE_E500MC
| PPC_OPCODE_VLE
)) != 0
3352 /* These are all version "1". */
3353 if (opcode
->flags
& PPC_OPCODE_SPE
)
3354 ppc_apuinfo_section_add (PPC_APUINFO_SPE
, 1);
3355 if (opcode
->flags
& PPC_OPCODE_ISEL
)
3356 ppc_apuinfo_section_add (PPC_APUINFO_ISEL
, 1);
3357 if (opcode
->flags
& PPC_OPCODE_EFS
)
3358 ppc_apuinfo_section_add (PPC_APUINFO_EFS
, 1);
3359 if (opcode
->flags
& PPC_OPCODE_BRLOCK
)
3360 ppc_apuinfo_section_add (PPC_APUINFO_BRLOCK
, 1);
3361 if (opcode
->flags
& PPC_OPCODE_PMR
)
3362 ppc_apuinfo_section_add (PPC_APUINFO_PMR
, 1);
3363 if (opcode
->flags
& PPC_OPCODE_CACHELCK
)
3364 ppc_apuinfo_section_add (PPC_APUINFO_CACHELCK
, 1);
3365 if (opcode
->flags
& PPC_OPCODE_RFMCI
)
3366 ppc_apuinfo_section_add (PPC_APUINFO_RFMCI
, 1);
3367 if (opcode
->flags
& PPC_OPCODE_VLE
)
3368 ppc_apuinfo_section_add (PPC_APUINFO_VLE
, 1);
3372 /* Write out the instruction. */
3373 /* Differentiate between two and four byte insns. */
3374 if (ppc_mach () == bfd_mach_ppc_vle
)
3376 if (PPC_OP_SE_VLE (insn
))
3380 addr_mod
= frag_now_fix () & 1;
3385 addr_mod
= frag_now_fix () & 3;
3387 /* All instructions can start on a 2 byte boundary for VLE. */
3388 f
= frag_more (insn_length
);
3389 if (frag_now
->has_code
&& frag_now
->insn_addr
!= addr_mod
)
3391 if (ppc_mach() == bfd_mach_ppc_vle
)
3392 as_bad (_("instruction address is not a multiple of 2"));
3394 as_bad (_("instruction address is not a multiple of 4"));
3396 frag_now
->insn_addr
= addr_mod
;
3397 frag_now
->has_code
= 1;
3398 md_number_to_chars (f
, insn
, insn_length
);
3401 dwarf2_emit_insn (insn_length
);
3404 /* Create any fixups. */
3405 for (i
= 0; i
< fc
; i
++)
3408 if (fixups
[i
].reloc
!= BFD_RELOC_UNUSED
)
3410 reloc_howto_type
*reloc_howto
;
3414 reloc_howto
= bfd_reloc_type_lookup (stdoutput
, fixups
[i
].reloc
);
3418 size
= bfd_get_reloc_size (reloc_howto
);
3419 offset
= target_big_endian
? (insn_length
- size
) : 0;
3421 if (size
< 1 || size
> 4)
3424 fixP
= fix_new_exp (frag_now
,
3425 f
- frag_now
->fr_literal
+ offset
,
3428 reloc_howto
->pc_relative
,
3433 const struct powerpc_operand
*operand
;
3435 operand
= &powerpc_operands
[fixups
[i
].opindex
];
3436 fixP
= fix_new_exp (frag_now
,
3437 f
- frag_now
->fr_literal
,
3440 (operand
->flags
& PPC_OPERAND_RELATIVE
) != 0,
3443 fixP
->fx_pcrel_adjust
= fixups
[i
].opindex
;
3447 /* Handle a macro. Gather all the operands, transform them as
3448 described by the macro, and call md_assemble recursively. All the
3449 operands are separated by commas; we don't accept parentheses
3450 around operands here. */
3453 ppc_macro (char *str
, const struct powerpc_macro
*macro
)
3464 /* Gather the users operands into the operands array. */
3469 if (count
>= sizeof operands
/ sizeof operands
[0])
3471 operands
[count
++] = s
;
3472 s
= strchr (s
, ',');
3473 if (s
== (char *) NULL
)
3478 if (count
!= macro
->operands
)
3480 as_bad (_("wrong number of operands"));
3484 /* Work out how large the string must be (the size is unbounded
3485 because it includes user input). */
3487 format
= macro
->format
;
3488 while (*format
!= '\0')
3497 arg
= strtol (format
+ 1, &send
, 10);
3498 know (send
!= format
&& arg
< count
);
3499 len
+= strlen (operands
[arg
]);
3504 /* Put the string together. */
3505 complete
= s
= (char *) alloca (len
+ 1);
3506 format
= macro
->format
;
3507 while (*format
!= '\0')
3513 arg
= strtol (format
+ 1, &send
, 10);
3514 strcpy (s
, operands
[arg
]);
3521 /* Assemble the constructed instruction. */
3522 md_assemble (complete
);
3526 /* For ELF, add support for SHT_ORDERED. */
3529 ppc_section_type (char *str
, size_t len
)
3531 if (len
== 7 && strncmp (str
, "ordered", 7) == 0)
3538 ppc_section_flags (flagword flags
, bfd_vma attr ATTRIBUTE_UNUSED
, int type
)
3540 if (type
== SHT_ORDERED
)
3541 flags
|= SEC_ALLOC
| SEC_LOAD
| SEC_SORT_ENTRIES
;
3545 #endif /* OBJ_ELF */
3548 /* Pseudo-op handling. */
3550 /* The .byte pseudo-op. This is similar to the normal .byte
3551 pseudo-op, but it can also take a single ASCII string. */
3554 ppc_byte (int ignore ATTRIBUTE_UNUSED
)
3556 if (*input_line_pointer
!= '\"')
3562 /* Gather characters. A real double quote is doubled. Unusual
3563 characters are not permitted. */
3564 ++input_line_pointer
;
3569 c
= *input_line_pointer
++;
3573 if (*input_line_pointer
!= '\"')
3575 ++input_line_pointer
;
3578 FRAG_APPEND_1_CHAR (c
);
3581 demand_empty_rest_of_line ();
3586 /* XCOFF specific pseudo-op handling. */
3588 /* This is set if we are creating a .stabx symbol, since we don't want
3589 to handle symbol suffixes for such symbols. */
3590 static bfd_boolean ppc_stab_symbol
;
3592 /* The .comm and .lcomm pseudo-ops for XCOFF. XCOFF puts common
3593 symbols in the .bss segment as though they were local common
3594 symbols, and uses a different smclas. The native Aix 4.3.3 assembler
3595 aligns .comm and .lcomm to 4 bytes. */
3598 ppc_comm (int lcomm
)
3600 asection
*current_seg
= now_seg
;
3601 subsegT current_subseg
= now_subseg
;
3607 symbolS
*lcomm_sym
= NULL
;
3611 name
= input_line_pointer
;
3612 endc
= get_symbol_end ();
3613 end_name
= input_line_pointer
;
3616 if (*input_line_pointer
!= ',')
3618 as_bad (_("missing size"));
3619 ignore_rest_of_line ();
3622 ++input_line_pointer
;
3624 size
= get_absolute_expression ();
3627 as_bad (_("negative size"));
3628 ignore_rest_of_line ();
3634 /* The third argument to .comm is the alignment. */
3635 if (*input_line_pointer
!= ',')
3639 ++input_line_pointer
;
3640 align
= get_absolute_expression ();
3643 as_warn (_("ignoring bad alignment"));
3653 /* The third argument to .lcomm appears to be the real local
3654 common symbol to create. References to the symbol named in
3655 the first argument are turned into references to the third
3657 if (*input_line_pointer
!= ',')
3659 as_bad (_("missing real symbol name"));
3660 ignore_rest_of_line ();
3663 ++input_line_pointer
;
3665 lcomm_name
= input_line_pointer
;
3666 lcomm_endc
= get_symbol_end ();
3668 lcomm_sym
= symbol_find_or_make (lcomm_name
);
3670 *input_line_pointer
= lcomm_endc
;
3672 /* The fourth argument to .lcomm is the alignment. */
3673 if (*input_line_pointer
!= ',')
3682 ++input_line_pointer
;
3683 align
= get_absolute_expression ();
3686 as_warn (_("ignoring bad alignment"));
3693 sym
= symbol_find_or_make (name
);
3696 if (S_IS_DEFINED (sym
)
3697 || S_GET_VALUE (sym
) != 0)
3699 as_bad (_("attempt to redefine symbol"));
3700 ignore_rest_of_line ();
3704 record_alignment (bss_section
, align
);
3707 || ! S_IS_DEFINED (lcomm_sym
))
3716 S_SET_EXTERNAL (sym
);
3720 symbol_get_tc (lcomm_sym
)->output
= 1;
3721 def_sym
= lcomm_sym
;
3725 subseg_set (bss_section
, 1);
3726 frag_align (align
, 0, 0);
3728 symbol_set_frag (def_sym
, frag_now
);
3729 pfrag
= frag_var (rs_org
, 1, 1, (relax_substateT
) 0, def_sym
,
3730 def_size
, (char *) NULL
);
3732 S_SET_SEGMENT (def_sym
, bss_section
);
3733 symbol_get_tc (def_sym
)->align
= align
;
3737 /* Align the size of lcomm_sym. */
3738 symbol_get_frag (lcomm_sym
)->fr_offset
=
3739 ((symbol_get_frag (lcomm_sym
)->fr_offset
+ (1 << align
) - 1)
3740 &~ ((1 << align
) - 1));
3741 if (align
> symbol_get_tc (lcomm_sym
)->align
)
3742 symbol_get_tc (lcomm_sym
)->align
= align
;
3747 /* Make sym an offset from lcomm_sym. */
3748 S_SET_SEGMENT (sym
, bss_section
);
3749 symbol_set_frag (sym
, symbol_get_frag (lcomm_sym
));
3750 S_SET_VALUE (sym
, symbol_get_frag (lcomm_sym
)->fr_offset
);
3751 symbol_get_frag (lcomm_sym
)->fr_offset
+= size
;
3754 subseg_set (current_seg
, current_subseg
);
3756 demand_empty_rest_of_line ();
3759 /* The .csect pseudo-op. This switches us into a different
3760 subsegment. The first argument is a symbol whose value is the
3761 start of the .csect. In COFF, csect symbols get special aux
3762 entries defined by the x_csect field of union internal_auxent. The
3763 optional second argument is the alignment (the default is 2). */
3766 ppc_csect (int ignore ATTRIBUTE_UNUSED
)
3773 name
= input_line_pointer
;
3774 endc
= get_symbol_end ();
3776 sym
= symbol_find_or_make (name
);
3778 *input_line_pointer
= endc
;
3780 if (S_GET_NAME (sym
)[0] == '\0')
3782 /* An unnamed csect is assumed to be [PR]. */
3783 symbol_get_tc (sym
)->symbol_class
= XMC_PR
;
3787 if (*input_line_pointer
== ',')
3789 ++input_line_pointer
;
3790 align
= get_absolute_expression ();
3793 ppc_change_csect (sym
, align
);
3795 demand_empty_rest_of_line ();
3798 /* Change to a different csect. */
3801 ppc_change_csect (symbolS
*sym
, offsetT align
)
3803 if (S_IS_DEFINED (sym
))
3804 subseg_set (S_GET_SEGMENT (sym
), symbol_get_tc (sym
)->subseg
);
3814 /* This is a new csect. We need to look at the symbol class to
3815 figure out whether it should go in the text section or the
3819 switch (symbol_get_tc (sym
)->symbol_class
)
3829 S_SET_SEGMENT (sym
, text_section
);
3830 symbol_get_tc (sym
)->subseg
= ppc_text_subsegment
;
3831 ++ppc_text_subsegment
;
3832 list_ptr
= &ppc_text_csects
;
3842 if (ppc_toc_csect
!= NULL
3843 && (symbol_get_tc (ppc_toc_csect
)->subseg
+ 1
3844 == ppc_data_subsegment
))
3846 S_SET_SEGMENT (sym
, data_section
);
3847 symbol_get_tc (sym
)->subseg
= ppc_data_subsegment
;
3848 ++ppc_data_subsegment
;
3849 list_ptr
= &ppc_data_csects
;
3855 /* We set the obstack chunk size to a small value before
3856 changing subsegments, so that we don't use a lot of memory
3857 space for what may be a small section. */
3858 hold_chunksize
= chunksize
;
3861 sec
= subseg_new (segment_name (S_GET_SEGMENT (sym
)),
3862 symbol_get_tc (sym
)->subseg
);
3864 chunksize
= hold_chunksize
;
3867 ppc_after_toc_frag
= frag_now
;
3869 record_alignment (sec
, align
);
3871 frag_align_code (align
, 0);
3873 frag_align (align
, 0, 0);
3875 symbol_set_frag (sym
, frag_now
);
3876 S_SET_VALUE (sym
, (valueT
) frag_now_fix ());
3878 symbol_get_tc (sym
)->align
= align
;
3879 symbol_get_tc (sym
)->output
= 1;
3880 symbol_get_tc (sym
)->within
= sym
;
3882 for (list
= *list_ptr
;
3883 symbol_get_tc (list
)->next
!= (symbolS
*) NULL
;
3884 list
= symbol_get_tc (list
)->next
)
3886 symbol_get_tc (list
)->next
= sym
;
3888 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
3889 symbol_append (sym
, symbol_get_tc (list
)->within
, &symbol_rootP
,
3893 ppc_current_csect
= sym
;
3897 ppc_change_debug_section (unsigned int idx
, subsegT subseg
)
3901 const struct xcoff_dwsect_name
*dw
= &xcoff_dwsect_names
[idx
];
3903 sec
= subseg_new (dw
->name
, subseg
);
3904 oldflags
= bfd_get_section_flags (stdoutput
, sec
);
3905 if (oldflags
== SEC_NO_FLAGS
)
3907 /* Just created section. */
3908 gas_assert (dw_sections
[idx
].sect
== NULL
);
3910 bfd_set_section_flags (stdoutput
, sec
, SEC_DEBUGGING
);
3911 bfd_set_section_alignment (stdoutput
, sec
, 0);
3912 dw_sections
[idx
].sect
= sec
;
3915 /* Not anymore in a csect. */
3916 ppc_current_csect
= NULL
;
3919 /* The .dwsect pseudo-op. Defines a DWARF section. Syntax is:
3920 .dwsect flag [, opt-label ]
3924 ppc_dwsect (int ignore ATTRIBUTE_UNUSED
)
3928 const struct xcoff_dwsect_name
*dw
;
3929 struct dw_subsection
*subseg
;
3930 struct dw_section
*dws
;
3934 flag
= get_absolute_expression ();
3936 for (i
= 0; i
< XCOFF_DWSECT_NBR_NAMES
; i
++)
3937 if (xcoff_dwsect_names
[i
].flag
== flag
)
3939 dw
= &xcoff_dwsect_names
[i
];
3943 /* Parse opt-label. */
3944 if (*input_line_pointer
== ',')
3949 ++input_line_pointer
;
3951 label
= input_line_pointer
;
3952 c
= get_symbol_end ();
3953 opt_label
= symbol_find_or_make (label
);
3954 *input_line_pointer
= c
;
3959 demand_empty_rest_of_line ();
3961 /* Return now in case of unknown subsection. */
3964 as_bad (_("no known dwarf XCOFF section for flag 0x%08x\n"),
3969 /* Find the subsection. */
3970 dws
= &dw_sections
[i
];
3972 if (opt_label
!= NULL
&& S_IS_DEFINED (opt_label
))
3974 /* Sanity check (note that in theory S_GET_SEGMENT mustn't be null). */
3975 if (dws
->sect
== NULL
|| S_GET_SEGMENT (opt_label
) != dws
->sect
)
3977 as_bad (_("label %s was not defined in this dwarf section"),
3978 S_GET_NAME (opt_label
));
3979 subseg
= dws
->anon_subseg
;
3983 subseg
= symbol_get_tc (opt_label
)->u
.dw
;
3988 /* Switch to the subsection. */
3989 ppc_change_debug_section (i
, subseg
->subseg
);
3993 /* Create a new dw subsection. */
3994 subseg
= (struct dw_subsection
*)
3995 xmalloc (sizeof (struct dw_subsection
));
3997 if (opt_label
== NULL
)
3999 /* The anonymous one. */
4001 subseg
->link
= NULL
;
4002 dws
->anon_subseg
= subseg
;
4007 if (dws
->list_subseg
!= NULL
)
4008 subseg
->subseg
= dws
->list_subseg
->subseg
+ 1;
4012 subseg
->link
= dws
->list_subseg
;
4013 dws
->list_subseg
= subseg
;
4014 symbol_get_tc (opt_label
)->u
.dw
= subseg
;
4017 ppc_change_debug_section (i
, subseg
->subseg
);
4021 /* Add the length field. */
4022 expressionS
*exp
= &subseg
->end_exp
;
4025 if (opt_label
!= NULL
)
4026 symbol_set_value_now (opt_label
);
4028 /* Add the length field. Note that according to the AIX assembler
4029 manual, the size of the length field is 4 for powerpc32 but
4030 12 for powerpc64. */
4033 /* Write the 64bit marker. */
4034 md_number_to_chars (frag_more (4), -1, 4);
4037 exp
->X_op
= O_subtract
;
4038 exp
->X_op_symbol
= symbol_temp_new_now ();
4039 exp
->X_add_symbol
= symbol_temp_make ();
4041 sz
= ppc_obj64
? 8 : 4;
4042 exp
->X_add_number
= -sz
;
4043 emit_expr (exp
, sz
);
4048 /* This function handles the .text and .data pseudo-ops. These
4049 pseudo-ops aren't really used by XCOFF; we implement them for the
4050 convenience of people who aren't used to XCOFF. */
4053 ppc_section (int type
)
4060 else if (type
== 'd')
4065 sym
= symbol_find_or_make (name
);
4067 ppc_change_csect (sym
, 2);
4069 demand_empty_rest_of_line ();
4072 /* This function handles the .section pseudo-op. This is mostly to
4073 give an error, since XCOFF only supports .text, .data and .bss, but
4074 we do permit the user to name the text or data section. */
4077 ppc_named_section (int ignore ATTRIBUTE_UNUSED
)
4080 const char *real_name
;
4084 user_name
= input_line_pointer
;
4085 c
= get_symbol_end ();
4087 if (strcmp (user_name
, ".text") == 0)
4088 real_name
= ".text[PR]";
4089 else if (strcmp (user_name
, ".data") == 0)
4090 real_name
= ".data[RW]";
4093 as_bad (_("the XCOFF file format does not support arbitrary sections"));
4094 *input_line_pointer
= c
;
4095 ignore_rest_of_line ();
4099 *input_line_pointer
= c
;
4101 sym
= symbol_find_or_make (real_name
);
4103 ppc_change_csect (sym
, 2);
4105 demand_empty_rest_of_line ();
4108 /* The .extern pseudo-op. We create an undefined symbol. */
4111 ppc_extern (int ignore ATTRIBUTE_UNUSED
)
4116 name
= input_line_pointer
;
4117 endc
= get_symbol_end ();
4119 (void) symbol_find_or_make (name
);
4121 *input_line_pointer
= endc
;
4123 demand_empty_rest_of_line ();
4126 /* The .lglobl pseudo-op. Keep the symbol in the symbol table. */
4129 ppc_lglobl (int ignore ATTRIBUTE_UNUSED
)
4135 name
= input_line_pointer
;
4136 endc
= get_symbol_end ();
4138 sym
= symbol_find_or_make (name
);
4140 *input_line_pointer
= endc
;
4142 symbol_get_tc (sym
)->output
= 1;
4144 demand_empty_rest_of_line ();
4147 /* The .ref pseudo-op. It takes a list of symbol names and inserts R_REF
4148 relocations at the beginning of the current csect.
4150 (In principle, there's no reason why the relocations _have_ to be at
4151 the beginning. Anywhere in the csect would do. However, inserting
4152 at the beginning is what the native assmebler does, and it helps to
4153 deal with cases where the .ref statements follow the section contents.)
4155 ??? .refs don't work for empty .csects. However, the native assembler
4156 doesn't report an error in this case, and neither yet do we. */
4159 ppc_ref (int ignore ATTRIBUTE_UNUSED
)
4164 if (ppc_current_csect
== NULL
)
4166 as_bad (_(".ref outside .csect"));
4167 ignore_rest_of_line ();
4173 name
= input_line_pointer
;
4174 c
= get_symbol_end ();
4176 fix_at_start (symbol_get_frag (ppc_current_csect
), 0,
4177 symbol_find_or_make (name
), 0, FALSE
, BFD_RELOC_NONE
);
4179 *input_line_pointer
= c
;
4181 c
= *input_line_pointer
;
4184 input_line_pointer
++;
4186 if (is_end_of_line
[(unsigned char) *input_line_pointer
])
4188 as_bad (_("missing symbol name"));
4189 ignore_rest_of_line ();
4196 demand_empty_rest_of_line ();
4199 /* The .rename pseudo-op. The RS/6000 assembler can rename symbols,
4200 although I don't know why it bothers. */
4203 ppc_rename (int ignore ATTRIBUTE_UNUSED
)
4210 name
= input_line_pointer
;
4211 endc
= get_symbol_end ();
4213 sym
= symbol_find_or_make (name
);
4215 *input_line_pointer
= endc
;
4217 if (*input_line_pointer
!= ',')
4219 as_bad (_("missing rename string"));
4220 ignore_rest_of_line ();
4223 ++input_line_pointer
;
4225 symbol_get_tc (sym
)->real_name
= demand_copy_C_string (&len
);
4227 demand_empty_rest_of_line ();
4230 /* The .stabx pseudo-op. This is similar to a normal .stabs
4231 pseudo-op, but slightly different. A sample is
4232 .stabx "main:F-1",.main,142,0
4233 The first argument is the symbol name to create. The second is the
4234 value, and the third is the storage class. The fourth seems to be
4235 always zero, and I am assuming it is the type. */
4238 ppc_stabx (int ignore ATTRIBUTE_UNUSED
)
4245 name
= demand_copy_C_string (&len
);
4247 if (*input_line_pointer
!= ',')
4249 as_bad (_("missing value"));
4252 ++input_line_pointer
;
4254 ppc_stab_symbol
= TRUE
;
4255 sym
= symbol_make (name
);
4256 ppc_stab_symbol
= FALSE
;
4258 symbol_get_tc (sym
)->real_name
= name
;
4260 (void) expression (&exp
);
4267 as_bad (_("illegal .stabx expression; zero assumed"));
4268 exp
.X_add_number
= 0;
4271 S_SET_VALUE (sym
, (valueT
) exp
.X_add_number
);
4272 symbol_set_frag (sym
, &zero_address_frag
);
4276 if (S_GET_SEGMENT (exp
.X_add_symbol
) == undefined_section
)
4277 symbol_set_value_expression (sym
, &exp
);
4281 exp
.X_add_number
+ S_GET_VALUE (exp
.X_add_symbol
));
4282 symbol_set_frag (sym
, symbol_get_frag (exp
.X_add_symbol
));
4287 /* The value is some complex expression. This will probably
4288 fail at some later point, but this is probably the right
4289 thing to do here. */
4290 symbol_set_value_expression (sym
, &exp
);
4294 S_SET_SEGMENT (sym
, ppc_coff_debug_section
);
4295 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4297 if (*input_line_pointer
!= ',')
4299 as_bad (_("missing class"));
4302 ++input_line_pointer
;
4304 S_SET_STORAGE_CLASS (sym
, get_absolute_expression ());
4306 if (*input_line_pointer
!= ',')
4308 as_bad (_("missing type"));
4311 ++input_line_pointer
;
4313 S_SET_DATA_TYPE (sym
, get_absolute_expression ());
4315 symbol_get_tc (sym
)->output
= 1;
4317 if (S_GET_STORAGE_CLASS (sym
) == C_STSYM
)
4322 .stabx "z",arrays_,133,0
4325 .comm arrays_,13768,3
4327 resolve_symbol_value will copy the exp's "within" into sym's when the
4328 offset is 0. Since this seems to be corner case problem,
4329 only do the correction for storage class C_STSYM. A better solution
4330 would be to have the tc field updated in ppc_symbol_new_hook. */
4332 if (exp
.X_op
== O_symbol
)
4334 if (ppc_current_block
== NULL
)
4335 as_bad (_(".stabx of storage class stsym must be within .bs/.es"));
4337 symbol_get_tc (sym
)->within
= ppc_current_block
;
4338 symbol_get_tc (exp
.X_add_symbol
)->within
= ppc_current_block
;
4342 if (exp
.X_op
!= O_symbol
4343 || ! S_IS_EXTERNAL (exp
.X_add_symbol
)
4344 || S_GET_SEGMENT (exp
.X_add_symbol
) != bss_section
)
4345 ppc_frob_label (sym
);
4348 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
4349 symbol_append (sym
, exp
.X_add_symbol
, &symbol_rootP
, &symbol_lastP
);
4350 if (symbol_get_tc (ppc_current_csect
)->within
== exp
.X_add_symbol
)
4351 symbol_get_tc (ppc_current_csect
)->within
= sym
;
4354 demand_empty_rest_of_line ();
4357 /* The .function pseudo-op. This takes several arguments. The first
4358 argument seems to be the external name of the symbol. The second
4359 argument seems to be the label for the start of the function. gcc
4360 uses the same name for both. I have no idea what the third and
4361 fourth arguments are meant to be. The optional fifth argument is
4362 an expression for the size of the function. In COFF this symbol
4363 gets an aux entry like that used for a csect. */
4366 ppc_function (int ignore ATTRIBUTE_UNUSED
)
4374 name
= input_line_pointer
;
4375 endc
= get_symbol_end ();
4377 /* Ignore any [PR] suffix. */
4378 name
= ppc_canonicalize_symbol_name (name
);
4379 s
= strchr (name
, '[');
4380 if (s
!= (char *) NULL
4381 && strcmp (s
+ 1, "PR]") == 0)
4384 ext_sym
= symbol_find_or_make (name
);
4386 *input_line_pointer
= endc
;
4388 if (*input_line_pointer
!= ',')
4390 as_bad (_("missing symbol name"));
4391 ignore_rest_of_line ();
4394 ++input_line_pointer
;
4396 name
= input_line_pointer
;
4397 endc
= get_symbol_end ();
4399 lab_sym
= symbol_find_or_make (name
);
4401 *input_line_pointer
= endc
;
4403 if (ext_sym
!= lab_sym
)
4407 exp
.X_op
= O_symbol
;
4408 exp
.X_add_symbol
= lab_sym
;
4409 exp
.X_op_symbol
= NULL
;
4410 exp
.X_add_number
= 0;
4412 symbol_set_value_expression (ext_sym
, &exp
);
4415 if (symbol_get_tc (ext_sym
)->symbol_class
== -1)
4416 symbol_get_tc (ext_sym
)->symbol_class
= XMC_PR
;
4417 symbol_get_tc (ext_sym
)->output
= 1;
4419 if (*input_line_pointer
== ',')
4423 /* Ignore the third argument. */
4424 ++input_line_pointer
;
4426 if (*input_line_pointer
== ',')
4428 /* Ignore the fourth argument. */
4429 ++input_line_pointer
;
4431 if (*input_line_pointer
== ',')
4433 /* The fifth argument is the function size. */
4434 ++input_line_pointer
;
4435 symbol_get_tc (ext_sym
)->u
.size
= symbol_new
4436 ("L0\001", absolute_section
,(valueT
) 0, &zero_address_frag
);
4437 pseudo_set (symbol_get_tc (ext_sym
)->u
.size
);
4442 S_SET_DATA_TYPE (ext_sym
, DT_FCN
<< N_BTSHFT
);
4443 SF_SET_FUNCTION (ext_sym
);
4444 SF_SET_PROCESS (ext_sym
);
4445 coff_add_linesym (ext_sym
);
4447 demand_empty_rest_of_line ();
4450 /* The .bf pseudo-op. This is just like a COFF C_FCN symbol named
4451 ".bf". If the pseudo op .bi was seen before .bf, patch the .bi sym
4452 with the correct line number */
4454 static symbolS
*saved_bi_sym
= 0;
4457 ppc_bf (int ignore ATTRIBUTE_UNUSED
)
4461 sym
= symbol_make (".bf");
4462 S_SET_SEGMENT (sym
, text_section
);
4463 symbol_set_frag (sym
, frag_now
);
4464 S_SET_VALUE (sym
, frag_now_fix ());
4465 S_SET_STORAGE_CLASS (sym
, C_FCN
);
4467 coff_line_base
= get_absolute_expression ();
4469 S_SET_NUMBER_AUXILIARY (sym
, 1);
4470 SA_SET_SYM_LNNO (sym
, coff_line_base
);
4472 /* Line number for bi. */
4475 S_SET_VALUE (saved_bi_sym
, coff_n_line_nos
);
4480 symbol_get_tc (sym
)->output
= 1;
4482 ppc_frob_label (sym
);
4484 demand_empty_rest_of_line ();
4487 /* The .ef pseudo-op. This is just like a COFF C_FCN symbol named
4488 ".ef", except that the line number is absolute, not relative to the
4489 most recent ".bf" symbol. */
4492 ppc_ef (int ignore ATTRIBUTE_UNUSED
)
4496 sym
= symbol_make (".ef");
4497 S_SET_SEGMENT (sym
, text_section
);
4498 symbol_set_frag (sym
, frag_now
);
4499 S_SET_VALUE (sym
, frag_now_fix ());
4500 S_SET_STORAGE_CLASS (sym
, C_FCN
);
4501 S_SET_NUMBER_AUXILIARY (sym
, 1);
4502 SA_SET_SYM_LNNO (sym
, get_absolute_expression ());
4503 symbol_get_tc (sym
)->output
= 1;
4505 ppc_frob_label (sym
);
4507 demand_empty_rest_of_line ();
4510 /* The .bi and .ei pseudo-ops. These take a string argument and
4511 generates a C_BINCL or C_EINCL symbol, which goes at the start of
4512 the symbol list. The value of .bi will be know when the next .bf
4518 static symbolS
*last_biei
;
4525 name
= demand_copy_C_string (&len
);
4527 /* The value of these symbols is actually file offset. Here we set
4528 the value to the index into the line number entries. In
4529 ppc_frob_symbols we set the fix_line field, which will cause BFD
4530 to do the right thing. */
4532 sym
= symbol_make (name
);
4533 /* obj-coff.c currently only handles line numbers correctly in the
4535 S_SET_SEGMENT (sym
, text_section
);
4536 S_SET_VALUE (sym
, coff_n_line_nos
);
4537 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4539 S_SET_STORAGE_CLASS (sym
, ei
? C_EINCL
: C_BINCL
);
4540 symbol_get_tc (sym
)->output
= 1;
4548 for (look
= last_biei
? last_biei
: symbol_rootP
;
4549 (look
!= (symbolS
*) NULL
4550 && (S_GET_STORAGE_CLASS (look
) == C_FILE
4551 || S_GET_STORAGE_CLASS (look
) == C_BINCL
4552 || S_GET_STORAGE_CLASS (look
) == C_EINCL
));
4553 look
= symbol_next (look
))
4555 if (look
!= (symbolS
*) NULL
)
4557 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
4558 symbol_insert (sym
, look
, &symbol_rootP
, &symbol_lastP
);
4562 demand_empty_rest_of_line ();
4565 /* The .bs pseudo-op. This generates a C_BSTAT symbol named ".bs".
4566 There is one argument, which is a csect symbol. The value of the
4567 .bs symbol is the index of this csect symbol. */
4570 ppc_bs (int ignore ATTRIBUTE_UNUSED
)
4577 if (ppc_current_block
!= NULL
)
4578 as_bad (_("nested .bs blocks"));
4580 name
= input_line_pointer
;
4581 endc
= get_symbol_end ();
4583 csect
= symbol_find_or_make (name
);
4585 *input_line_pointer
= endc
;
4587 sym
= symbol_make (".bs");
4588 S_SET_SEGMENT (sym
, now_seg
);
4589 S_SET_STORAGE_CLASS (sym
, C_BSTAT
);
4590 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4591 symbol_get_tc (sym
)->output
= 1;
4593 symbol_get_tc (sym
)->within
= csect
;
4595 ppc_frob_label (sym
);
4597 ppc_current_block
= sym
;
4599 demand_empty_rest_of_line ();
4602 /* The .es pseudo-op. Generate a C_ESTART symbol named .es. */
4605 ppc_es (int ignore ATTRIBUTE_UNUSED
)
4609 if (ppc_current_block
== NULL
)
4610 as_bad (_(".es without preceding .bs"));
4612 sym
= symbol_make (".es");
4613 S_SET_SEGMENT (sym
, now_seg
);
4614 S_SET_STORAGE_CLASS (sym
, C_ESTAT
);
4615 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4616 symbol_get_tc (sym
)->output
= 1;
4618 ppc_frob_label (sym
);
4620 ppc_current_block
= NULL
;
4622 demand_empty_rest_of_line ();
4625 /* The .bb pseudo-op. Generate a C_BLOCK symbol named .bb, with a
4629 ppc_bb (int ignore ATTRIBUTE_UNUSED
)
4633 sym
= symbol_make (".bb");
4634 S_SET_SEGMENT (sym
, text_section
);
4635 symbol_set_frag (sym
, frag_now
);
4636 S_SET_VALUE (sym
, frag_now_fix ());
4637 S_SET_STORAGE_CLASS (sym
, C_BLOCK
);
4639 S_SET_NUMBER_AUXILIARY (sym
, 1);
4640 SA_SET_SYM_LNNO (sym
, get_absolute_expression ());
4642 symbol_get_tc (sym
)->output
= 1;
4644 SF_SET_PROCESS (sym
);
4646 ppc_frob_label (sym
);
4648 demand_empty_rest_of_line ();
4651 /* The .eb pseudo-op. Generate a C_BLOCK symbol named .eb, with a
4655 ppc_eb (int ignore ATTRIBUTE_UNUSED
)
4659 sym
= symbol_make (".eb");
4660 S_SET_SEGMENT (sym
, text_section
);
4661 symbol_set_frag (sym
, frag_now
);
4662 S_SET_VALUE (sym
, frag_now_fix ());
4663 S_SET_STORAGE_CLASS (sym
, C_BLOCK
);
4664 S_SET_NUMBER_AUXILIARY (sym
, 1);
4665 SA_SET_SYM_LNNO (sym
, get_absolute_expression ());
4666 symbol_get_tc (sym
)->output
= 1;
4668 SF_SET_PROCESS (sym
);
4670 ppc_frob_label (sym
);
4672 demand_empty_rest_of_line ();
4675 /* The .bc pseudo-op. This just creates a C_BCOMM symbol with a
4679 ppc_bc (int ignore ATTRIBUTE_UNUSED
)
4685 name
= demand_copy_C_string (&len
);
4686 sym
= symbol_make (name
);
4687 S_SET_SEGMENT (sym
, ppc_coff_debug_section
);
4688 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4689 S_SET_STORAGE_CLASS (sym
, C_BCOMM
);
4690 S_SET_VALUE (sym
, 0);
4691 symbol_get_tc (sym
)->output
= 1;
4693 ppc_frob_label (sym
);
4695 demand_empty_rest_of_line ();
4698 /* The .ec pseudo-op. This just creates a C_ECOMM symbol. */
4701 ppc_ec (int ignore ATTRIBUTE_UNUSED
)
4705 sym
= symbol_make (".ec");
4706 S_SET_SEGMENT (sym
, ppc_coff_debug_section
);
4707 symbol_get_bfdsym (sym
)->flags
|= BSF_DEBUGGING
;
4708 S_SET_STORAGE_CLASS (sym
, C_ECOMM
);
4709 S_SET_VALUE (sym
, 0);
4710 symbol_get_tc (sym
)->output
= 1;
4712 ppc_frob_label (sym
);
4714 demand_empty_rest_of_line ();
4717 /* The .toc pseudo-op. Switch to the .toc subsegment. */
4720 ppc_toc (int ignore ATTRIBUTE_UNUSED
)
4722 if (ppc_toc_csect
!= (symbolS
*) NULL
)
4723 subseg_set (data_section
, symbol_get_tc (ppc_toc_csect
)->subseg
);
4730 subseg
= ppc_data_subsegment
;
4731 ++ppc_data_subsegment
;
4733 subseg_new (segment_name (data_section
), subseg
);
4734 ppc_toc_frag
= frag_now
;
4736 sym
= symbol_find_or_make ("TOC[TC0]");
4737 symbol_set_frag (sym
, frag_now
);
4738 S_SET_SEGMENT (sym
, data_section
);
4739 S_SET_VALUE (sym
, (valueT
) frag_now_fix ());
4740 symbol_get_tc (sym
)->subseg
= subseg
;
4741 symbol_get_tc (sym
)->output
= 1;
4742 symbol_get_tc (sym
)->within
= sym
;
4744 ppc_toc_csect
= sym
;
4746 for (list
= ppc_data_csects
;
4747 symbol_get_tc (list
)->next
!= (symbolS
*) NULL
;
4748 list
= symbol_get_tc (list
)->next
)
4750 symbol_get_tc (list
)->next
= sym
;
4752 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
4753 symbol_append (sym
, symbol_get_tc (list
)->within
, &symbol_rootP
,
4757 ppc_current_csect
= ppc_toc_csect
;
4759 demand_empty_rest_of_line ();
4762 /* The AIX assembler automatically aligns the operands of a .long or
4763 .short pseudo-op, and we want to be compatible. */
4766 ppc_xcoff_cons (int log_size
)
4768 frag_align (log_size
, 0, 0);
4769 record_alignment (now_seg
, log_size
);
4770 cons (1 << log_size
);
4774 ppc_vbyte (int dummy ATTRIBUTE_UNUSED
)
4779 (void) expression (&exp
);
4781 if (exp
.X_op
!= O_constant
)
4783 as_bad (_("non-constant byte count"));
4787 byte_count
= exp
.X_add_number
;
4789 if (*input_line_pointer
!= ',')
4791 as_bad (_("missing value"));
4795 ++input_line_pointer
;
4800 ppc_xcoff_end (void)
4804 for (i
= 0; i
< XCOFF_DWSECT_NBR_NAMES
; i
++)
4806 struct dw_section
*dws
= &dw_sections
[i
];
4807 struct dw_subsection
*dwss
;
4809 if (dws
->anon_subseg
)
4811 dwss
= dws
->anon_subseg
;
4812 dwss
->link
= dws
->list_subseg
;
4815 dwss
= dws
->list_subseg
;
4817 for (; dwss
!= NULL
; dwss
= dwss
->link
)
4818 if (dwss
->end_exp
.X_add_symbol
!= NULL
)
4820 subseg_set (dws
->sect
, dwss
->subseg
);
4821 symbol_set_value_now (dwss
->end_exp
.X_add_symbol
);
4826 #endif /* OBJ_XCOFF */
4827 #if defined (OBJ_XCOFF) || defined (OBJ_ELF)
4829 /* The .tc pseudo-op. This is used when generating either XCOFF or
4830 ELF. This takes two or more arguments.
4832 When generating XCOFF output, the first argument is the name to
4833 give to this location in the toc; this will be a symbol with class
4834 TC. The rest of the arguments are N-byte values to actually put at
4835 this location in the TOC; often there is just one more argument, a
4836 relocatable symbol reference. The size of the value to store
4837 depends on target word size. A 32-bit target uses 4-byte values, a
4838 64-bit target uses 8-byte values.
4840 When not generating XCOFF output, the arguments are the same, but
4841 the first argument is simply ignored. */
4844 ppc_tc (int ignore ATTRIBUTE_UNUSED
)
4848 /* Define the TOC symbol name. */
4854 if (ppc_toc_csect
== (symbolS
*) NULL
4855 || ppc_toc_csect
!= ppc_current_csect
)
4857 as_bad (_(".tc not in .toc section"));
4858 ignore_rest_of_line ();
4862 name
= input_line_pointer
;
4863 endc
= get_symbol_end ();
4865 sym
= symbol_find_or_make (name
);
4867 *input_line_pointer
= endc
;
4869 if (S_IS_DEFINED (sym
))
4873 label
= symbol_get_tc (ppc_current_csect
)->within
;
4874 if (symbol_get_tc (label
)->symbol_class
!= XMC_TC0
)
4876 as_bad (_(".tc with no label"));
4877 ignore_rest_of_line ();
4881 S_SET_SEGMENT (label
, S_GET_SEGMENT (sym
));
4882 symbol_set_frag (label
, symbol_get_frag (sym
));
4883 S_SET_VALUE (label
, S_GET_VALUE (sym
));
4885 while (! is_end_of_line
[(unsigned char) *input_line_pointer
])
4886 ++input_line_pointer
;
4891 S_SET_SEGMENT (sym
, now_seg
);
4892 symbol_set_frag (sym
, frag_now
);
4893 S_SET_VALUE (sym
, (valueT
) frag_now_fix ());
4894 symbol_get_tc (sym
)->symbol_class
= XMC_TC
;
4895 symbol_get_tc (sym
)->output
= 1;
4897 ppc_frob_label (sym
);
4900 #endif /* OBJ_XCOFF */
4904 /* Skip the TOC symbol name. */
4905 while (is_part_of_name (*input_line_pointer
)
4906 || *input_line_pointer
== ' '
4907 || *input_line_pointer
== '['
4908 || *input_line_pointer
== ']'
4909 || *input_line_pointer
== '{'
4910 || *input_line_pointer
== '}')
4911 ++input_line_pointer
;
4913 /* Align to a four/eight byte boundary. */
4914 align
= ppc_obj64
? 3 : 2;
4915 frag_align (align
, 0, 0);
4916 record_alignment (now_seg
, align
);
4917 #endif /* OBJ_ELF */
4919 if (*input_line_pointer
!= ',')
4920 demand_empty_rest_of_line ();
4923 ++input_line_pointer
;
4924 cons (ppc_obj64
? 8 : 4);
4928 /* Pseudo-op .machine. */
4931 ppc_machine (int ignore ATTRIBUTE_UNUSED
)
4934 #define MAX_HISTORY 100
4935 static ppc_cpu_t
*cpu_history
;
4936 static int curr_hist
;
4940 if (*input_line_pointer
== '"')
4943 cpu_string
= demand_copy_C_string (&len
);
4948 cpu_string
= input_line_pointer
;
4949 c
= get_symbol_end ();
4950 cpu_string
= xstrdup (cpu_string
);
4951 *input_line_pointer
= c
;
4954 if (cpu_string
!= NULL
)
4956 ppc_cpu_t old_cpu
= ppc_cpu
;
4960 for (p
= cpu_string
; *p
!= 0; p
++)
4963 if (strcmp (cpu_string
, "push") == 0)
4965 if (cpu_history
== NULL
)
4966 cpu_history
= xmalloc (MAX_HISTORY
* sizeof (*cpu_history
));
4968 if (curr_hist
>= MAX_HISTORY
)
4969 as_bad (_(".machine stack overflow"));
4971 cpu_history
[curr_hist
++] = ppc_cpu
;
4973 else if (strcmp (cpu_string
, "pop") == 0)
4976 as_bad (_(".machine stack underflow"));
4978 ppc_cpu
= cpu_history
[--curr_hist
];
4980 else if ((new_cpu
= ppc_parse_cpu (ppc_cpu
, &sticky
, cpu_string
)) != 0)
4983 as_bad (_("invalid machine `%s'"), cpu_string
);
4985 if (ppc_cpu
!= old_cpu
)
4986 ppc_setup_opcodes ();
4989 demand_empty_rest_of_line ();
4991 #endif /* defined (OBJ_XCOFF) || defined (OBJ_ELF) */
4995 /* Pseudo-ops specific to the Windows NT PowerPC PE (coff) format. */
4997 /* Set the current section. */
4999 ppc_set_current_section (segT
new)
5001 ppc_previous_section
= ppc_current_section
;
5002 ppc_current_section
= new;
5005 /* pseudo-op: .previous
5006 behaviour: toggles the current section with the previous section.
5008 warnings: "No previous section" */
5011 ppc_previous (int ignore ATTRIBUTE_UNUSED
)
5013 if (ppc_previous_section
== NULL
)
5015 as_warn (_("no previous section to return to, ignored."));
5019 subseg_set (ppc_previous_section
, 0);
5021 ppc_set_current_section (ppc_previous_section
);
5024 /* pseudo-op: .pdata
5025 behaviour: predefined read only data section
5029 initial: .section .pdata "adr3"
5030 a - don't know -- maybe a misprint
5031 d - initialized data
5033 3 - double word aligned (that would be 4 byte boundary)
5036 Tag index tables (also known as the function table) for exception
5037 handling, debugging, etc. */
5040 ppc_pdata (int ignore ATTRIBUTE_UNUSED
)
5042 if (pdata_section
== 0)
5044 pdata_section
= subseg_new (".pdata", 0);
5046 bfd_set_section_flags (stdoutput
, pdata_section
,
5047 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5048 | SEC_READONLY
| SEC_DATA
));
5050 bfd_set_section_alignment (stdoutput
, pdata_section
, 2);
5054 pdata_section
= subseg_new (".pdata", 0);
5056 ppc_set_current_section (pdata_section
);
5059 /* pseudo-op: .ydata
5060 behaviour: predefined read only data section
5064 initial: .section .ydata "drw3"
5065 a - don't know -- maybe a misprint
5066 d - initialized data
5068 3 - double word aligned (that would be 4 byte boundary)
5070 Tag tables (also known as the scope table) for exception handling,
5074 ppc_ydata (int ignore ATTRIBUTE_UNUSED
)
5076 if (ydata_section
== 0)
5078 ydata_section
= subseg_new (".ydata", 0);
5079 bfd_set_section_flags (stdoutput
, ydata_section
,
5080 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5081 | SEC_READONLY
| SEC_DATA
));
5083 bfd_set_section_alignment (stdoutput
, ydata_section
, 3);
5087 ydata_section
= subseg_new (".ydata", 0);
5089 ppc_set_current_section (ydata_section
);
5092 /* pseudo-op: .reldata
5093 behaviour: predefined read write data section
5094 double word aligned (4-byte)
5095 FIXME: relocation is applied to it
5096 FIXME: what's the difference between this and .data?
5099 initial: .section .reldata "drw3"
5100 d - initialized data
5103 3 - double word aligned (that would be 8 byte boundary)
5106 Like .data, but intended to hold data subject to relocation, such as
5107 function descriptors, etc. */
5110 ppc_reldata (int ignore ATTRIBUTE_UNUSED
)
5112 if (reldata_section
== 0)
5114 reldata_section
= subseg_new (".reldata", 0);
5116 bfd_set_section_flags (stdoutput
, reldata_section
,
5117 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5120 bfd_set_section_alignment (stdoutput
, reldata_section
, 2);
5124 reldata_section
= subseg_new (".reldata", 0);
5126 ppc_set_current_section (reldata_section
);
5129 /* pseudo-op: .rdata
5130 behaviour: predefined read only data section
5134 initial: .section .rdata "dr3"
5135 d - initialized data
5137 3 - double word aligned (that would be 4 byte boundary) */
5140 ppc_rdata (int ignore ATTRIBUTE_UNUSED
)
5142 if (rdata_section
== 0)
5144 rdata_section
= subseg_new (".rdata", 0);
5145 bfd_set_section_flags (stdoutput
, rdata_section
,
5146 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5147 | SEC_READONLY
| SEC_DATA
));
5149 bfd_set_section_alignment (stdoutput
, rdata_section
, 2);
5153 rdata_section
= subseg_new (".rdata", 0);
5155 ppc_set_current_section (rdata_section
);
5158 /* pseudo-op: .ualong
5159 behaviour: much like .int, with the exception that no alignment is
5161 FIXME: test the alignment statement
5166 ppc_ualong (int ignore ATTRIBUTE_UNUSED
)
5172 /* pseudo-op: .znop <symbol name>
5173 behaviour: Issue a nop instruction
5174 Issue a IMAGE_REL_PPC_IFGLUE relocation against it, using
5175 the supplied symbol name.
5177 warnings: Missing symbol name */
5180 ppc_znop (int ignore ATTRIBUTE_UNUSED
)
5183 const struct powerpc_opcode
*opcode
;
5190 /* Strip out the symbol name. */
5191 symbol_name
= input_line_pointer
;
5192 c
= get_symbol_end ();
5194 name
= xmalloc (input_line_pointer
- symbol_name
+ 1);
5195 strcpy (name
, symbol_name
);
5197 sym
= symbol_find_or_make (name
);
5199 *input_line_pointer
= c
;
5203 /* Look up the opcode in the hash table. */
5204 opcode
= (const struct powerpc_opcode
*) hash_find (ppc_hash
, "nop");
5206 /* Stick in the nop. */
5207 insn
= opcode
->opcode
;
5209 /* Write out the instruction. */
5211 md_number_to_chars (f
, insn
, 4);
5213 f
- frag_now
->fr_literal
,
5218 BFD_RELOC_16_GOT_PCREL
);
5228 ppc_pe_comm (int lcomm
)
5237 name
= input_line_pointer
;
5238 c
= get_symbol_end ();
5240 /* just after name is now '\0'. */
5241 p
= input_line_pointer
;
5244 if (*input_line_pointer
!= ',')
5246 as_bad (_("expected comma after symbol-name: rest of line ignored."));
5247 ignore_rest_of_line ();
5251 input_line_pointer
++; /* skip ',' */
5252 if ((temp
= get_absolute_expression ()) < 0)
5254 as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp
);
5255 ignore_rest_of_line ();
5261 /* The third argument to .comm is the alignment. */
5262 if (*input_line_pointer
!= ',')
5266 ++input_line_pointer
;
5267 align
= get_absolute_expression ();
5270 as_warn (_("ignoring bad alignment"));
5277 symbolP
= symbol_find_or_make (name
);
5280 if (S_IS_DEFINED (symbolP
) && ! S_IS_COMMON (symbolP
))
5282 as_bad (_("ignoring attempt to re-define symbol `%s'."),
5283 S_GET_NAME (symbolP
));
5284 ignore_rest_of_line ();
5288 if (S_GET_VALUE (symbolP
))
5290 if (S_GET_VALUE (symbolP
) != (valueT
) temp
)
5291 as_bad (_("length of .comm \"%s\" is already %ld. Not changed to %ld."),
5292 S_GET_NAME (symbolP
),
5293 (long) S_GET_VALUE (symbolP
),
5298 S_SET_VALUE (symbolP
, (valueT
) temp
);
5299 S_SET_EXTERNAL (symbolP
);
5300 S_SET_SEGMENT (symbolP
, bfd_com_section_ptr
);
5303 demand_empty_rest_of_line ();
5307 * implement the .section pseudo op:
5308 * .section name {, "flags"}
5310 * | +--- optional flags: 'b' for bss
5312 * +-- section name 'l' for lib
5316 * 'd' (apparently m88k for data)
5318 * But if the argument is not a quoted string, treat it as a
5319 * subsegment number.
5321 * FIXME: this is a copy of the section processing from obj-coff.c, with
5322 * additions/changes for the moto-pas assembler support. There are three
5325 * FIXME: I just noticed this. This doesn't work at all really. It it
5326 * setting bits that bfd probably neither understands or uses. The
5327 * correct approach (?) will have to incorporate extra fields attached
5328 * to the section to hold the system specific stuff. (krk)
5331 * 'a' - unknown - referred to in documentation, but no definition supplied
5332 * 'c' - section has code
5333 * 'd' - section has initialized data
5334 * 'u' - section has uninitialized data
5335 * 'i' - section contains directives (info)
5336 * 'n' - section can be discarded
5337 * 'R' - remove section at link time
5339 * Section Protection:
5340 * 'r' - section is readable
5341 * 'w' - section is writeable
5342 * 'x' - section is executable
5343 * 's' - section is sharable
5345 * Section Alignment:
5346 * '0' - align to byte boundary
5347 * '1' - align to halfword undary
5348 * '2' - align to word boundary
5349 * '3' - align to doubleword boundary
5350 * '4' - align to quadword boundary
5351 * '5' - align to 32 byte boundary
5352 * '6' - align to 64 byte boundary
5357 ppc_pe_section (int ignore ATTRIBUTE_UNUSED
)
5359 /* Strip out the section name. */
5368 section_name
= input_line_pointer
;
5369 c
= get_symbol_end ();
5371 name
= xmalloc (input_line_pointer
- section_name
+ 1);
5372 strcpy (name
, section_name
);
5374 *input_line_pointer
= c
;
5379 flags
= SEC_NO_FLAGS
;
5381 if (strcmp (name
, ".idata$2") == 0)
5385 else if (strcmp (name
, ".idata$3") == 0)
5389 else if (strcmp (name
, ".idata$4") == 0)
5393 else if (strcmp (name
, ".idata$5") == 0)
5397 else if (strcmp (name
, ".idata$6") == 0)
5402 /* Default alignment to 16 byte boundary. */
5405 if (*input_line_pointer
== ',')
5407 ++input_line_pointer
;
5409 if (*input_line_pointer
!= '"')
5410 exp
= get_absolute_expression ();
5413 ++input_line_pointer
;
5414 while (*input_line_pointer
!= '"'
5415 && ! is_end_of_line
[(unsigned char) *input_line_pointer
])
5417 switch (*input_line_pointer
)
5419 /* Section Contents */
5420 case 'a': /* unknown */
5421 as_bad (_("unsupported section attribute -- 'a'"));
5423 case 'c': /* code section */
5426 case 'd': /* section has initialized data */
5429 case 'u': /* section has uninitialized data */
5430 /* FIXME: This is IMAGE_SCN_CNT_UNINITIALIZED_DATA
5434 case 'i': /* section contains directives (info) */
5435 /* FIXME: This is IMAGE_SCN_LNK_INFO
5437 flags
|= SEC_HAS_CONTENTS
;
5439 case 'n': /* section can be discarded */
5442 case 'R': /* Remove section at link time */
5443 flags
|= SEC_NEVER_LOAD
;
5445 #if IFLICT_BRAIN_DAMAGE
5446 /* Section Protection */
5447 case 'r': /* section is readable */
5448 flags
|= IMAGE_SCN_MEM_READ
;
5450 case 'w': /* section is writeable */
5451 flags
|= IMAGE_SCN_MEM_WRITE
;
5453 case 'x': /* section is executable */
5454 flags
|= IMAGE_SCN_MEM_EXECUTE
;
5456 case 's': /* section is sharable */
5457 flags
|= IMAGE_SCN_MEM_SHARED
;
5460 /* Section Alignment */
5461 case '0': /* align to byte boundary */
5462 flags
|= IMAGE_SCN_ALIGN_1BYTES
;
5465 case '1': /* align to halfword boundary */
5466 flags
|= IMAGE_SCN_ALIGN_2BYTES
;
5469 case '2': /* align to word boundary */
5470 flags
|= IMAGE_SCN_ALIGN_4BYTES
;
5473 case '3': /* align to doubleword boundary */
5474 flags
|= IMAGE_SCN_ALIGN_8BYTES
;
5477 case '4': /* align to quadword boundary */
5478 flags
|= IMAGE_SCN_ALIGN_16BYTES
;
5481 case '5': /* align to 32 byte boundary */
5482 flags
|= IMAGE_SCN_ALIGN_32BYTES
;
5485 case '6': /* align to 64 byte boundary */
5486 flags
|= IMAGE_SCN_ALIGN_64BYTES
;
5491 as_bad (_("unknown section attribute '%c'"),
5492 *input_line_pointer
);
5495 ++input_line_pointer
;
5497 if (*input_line_pointer
== '"')
5498 ++input_line_pointer
;
5502 sec
= subseg_new (name
, (subsegT
) exp
);
5504 ppc_set_current_section (sec
);
5506 if (flags
!= SEC_NO_FLAGS
)
5508 if (! bfd_set_section_flags (stdoutput
, sec
, flags
))
5509 as_bad (_("error setting flags for \"%s\": %s"),
5510 bfd_section_name (stdoutput
, sec
),
5511 bfd_errmsg (bfd_get_error ()));
5514 bfd_set_section_alignment (stdoutput
, sec
, align
);
5518 ppc_pe_function (int ignore ATTRIBUTE_UNUSED
)
5524 name
= input_line_pointer
;
5525 endc
= get_symbol_end ();
5527 ext_sym
= symbol_find_or_make (name
);
5529 *input_line_pointer
= endc
;
5531 S_SET_DATA_TYPE (ext_sym
, DT_FCN
<< N_BTSHFT
);
5532 SF_SET_FUNCTION (ext_sym
);
5533 SF_SET_PROCESS (ext_sym
);
5534 coff_add_linesym (ext_sym
);
5536 demand_empty_rest_of_line ();
5540 ppc_pe_tocd (int ignore ATTRIBUTE_UNUSED
)
5542 if (tocdata_section
== 0)
5544 tocdata_section
= subseg_new (".tocd", 0);
5545 /* FIXME: section flags won't work. */
5546 bfd_set_section_flags (stdoutput
, tocdata_section
,
5547 (SEC_ALLOC
| SEC_LOAD
| SEC_RELOC
5548 | SEC_READONLY
| SEC_DATA
));
5550 bfd_set_section_alignment (stdoutput
, tocdata_section
, 2);
5554 rdata_section
= subseg_new (".tocd", 0);
5557 ppc_set_current_section (tocdata_section
);
5559 demand_empty_rest_of_line ();
5562 /* Don't adjust TOC relocs to use the section symbol. */
5565 ppc_pe_fix_adjustable (fixS
*fix
)
5567 return fix
->fx_r_type
!= BFD_RELOC_PPC_TOC16
;
5574 /* XCOFF specific symbol and file handling. */
5576 /* Canonicalize the symbol name. We use the to force the suffix, if
5577 any, to use square brackets, and to be in upper case. */
5580 ppc_canonicalize_symbol_name (char *name
)
5584 if (ppc_stab_symbol
)
5587 for (s
= name
; *s
!= '\0' && *s
!= '{' && *s
!= '['; s
++)
5601 for (s
++; *s
!= '\0' && *s
!= brac
; s
++)
5604 if (*s
== '\0' || s
[1] != '\0')
5605 as_bad (_("bad symbol suffix"));
5613 /* Set the class of a symbol based on the suffix, if any. This is
5614 called whenever a new symbol is created. */
5617 ppc_symbol_new_hook (symbolS
*sym
)
5619 struct ppc_tc_sy
*tc
;
5622 tc
= symbol_get_tc (sym
);
5625 tc
->symbol_class
= -1;
5626 tc
->real_name
= NULL
;
5633 if (ppc_stab_symbol
)
5636 s
= strchr (S_GET_NAME (sym
), '[');
5637 if (s
== (const char *) NULL
)
5639 /* There is no suffix. */
5648 if (strcmp (s
, "BS]") == 0)
5649 tc
->symbol_class
= XMC_BS
;
5652 if (strcmp (s
, "DB]") == 0)
5653 tc
->symbol_class
= XMC_DB
;
5654 else if (strcmp (s
, "DS]") == 0)
5655 tc
->symbol_class
= XMC_DS
;
5658 if (strcmp (s
, "GL]") == 0)
5659 tc
->symbol_class
= XMC_GL
;
5662 if (strcmp (s
, "PR]") == 0)
5663 tc
->symbol_class
= XMC_PR
;
5666 if (strcmp (s
, "RO]") == 0)
5667 tc
->symbol_class
= XMC_RO
;
5668 else if (strcmp (s
, "RW]") == 0)
5669 tc
->symbol_class
= XMC_RW
;
5672 if (strcmp (s
, "SV]") == 0)
5673 tc
->symbol_class
= XMC_SV
;
5676 if (strcmp (s
, "TC]") == 0)
5677 tc
->symbol_class
= XMC_TC
;
5678 else if (strcmp (s
, "TI]") == 0)
5679 tc
->symbol_class
= XMC_TI
;
5680 else if (strcmp (s
, "TB]") == 0)
5681 tc
->symbol_class
= XMC_TB
;
5682 else if (strcmp (s
, "TC0]") == 0 || strcmp (s
, "T0]") == 0)
5683 tc
->symbol_class
= XMC_TC0
;
5686 if (strcmp (s
, "UA]") == 0)
5687 tc
->symbol_class
= XMC_UA
;
5688 else if (strcmp (s
, "UC]") == 0)
5689 tc
->symbol_class
= XMC_UC
;
5692 if (strcmp (s
, "XO]") == 0)
5693 tc
->symbol_class
= XMC_XO
;
5697 if (tc
->symbol_class
== -1)
5698 as_bad (_("unrecognized symbol suffix"));
5701 /* Set the class of a label based on where it is defined. This
5702 handles symbols without suffixes. Also, move the symbol so that it
5703 follows the csect symbol. */
5706 ppc_frob_label (symbolS
*sym
)
5708 if (ppc_current_csect
!= (symbolS
*) NULL
)
5710 if (symbol_get_tc (sym
)->symbol_class
== -1)
5711 symbol_get_tc (sym
)->symbol_class
= symbol_get_tc (ppc_current_csect
)->symbol_class
;
5713 symbol_remove (sym
, &symbol_rootP
, &symbol_lastP
);
5714 symbol_append (sym
, symbol_get_tc (ppc_current_csect
)->within
,
5715 &symbol_rootP
, &symbol_lastP
);
5716 symbol_get_tc (ppc_current_csect
)->within
= sym
;
5717 symbol_get_tc (sym
)->within
= ppc_current_csect
;
5721 dwarf2_emit_label (sym
);
5725 /* This variable is set by ppc_frob_symbol if any absolute symbols are
5726 seen. It tells ppc_adjust_symtab whether it needs to look through
5729 static bfd_boolean ppc_saw_abs
;
5731 /* Change the name of a symbol just before writing it out. Set the
5732 real name if the .rename pseudo-op was used. Otherwise, remove any
5733 class suffix. Return 1 if the symbol should not be included in the
5737 ppc_frob_symbol (symbolS
*sym
)
5739 static symbolS
*ppc_last_function
;
5740 static symbolS
*set_end
;
5742 /* Discard symbols that should not be included in the output symbol
5744 if (! symbol_used_in_reloc_p (sym
)
5745 && ((symbol_get_bfdsym (sym
)->flags
& BSF_SECTION_SYM
) != 0
5746 || (! (S_IS_EXTERNAL (sym
) || S_IS_WEAK (sym
))
5747 && ! symbol_get_tc (sym
)->output
5748 && S_GET_STORAGE_CLASS (sym
) != C_FILE
)))
5751 /* This one will disappear anyway. Don't make a csect sym for it. */
5752 if (sym
== abs_section_sym
)
5755 if (symbol_get_tc (sym
)->real_name
!= (char *) NULL
)
5756 S_SET_NAME (sym
, symbol_get_tc (sym
)->real_name
);
5762 name
= S_GET_NAME (sym
);
5763 s
= strchr (name
, '[');
5764 if (s
!= (char *) NULL
)
5770 snew
= xmalloc (len
+ 1);
5771 memcpy (snew
, name
, len
);
5774 S_SET_NAME (sym
, snew
);
5778 if (set_end
!= (symbolS
*) NULL
)
5780 SA_SET_SYM_ENDNDX (set_end
, sym
);
5784 if (SF_GET_FUNCTION (sym
))
5786 if (ppc_last_function
!= (symbolS
*) NULL
)
5787 as_bad (_("two .function pseudo-ops with no intervening .ef"));
5788 ppc_last_function
= sym
;
5789 if (symbol_get_tc (sym
)->u
.size
!= (symbolS
*) NULL
)
5791 resolve_symbol_value (symbol_get_tc (sym
)->u
.size
);
5792 SA_SET_SYM_FSIZE (sym
,
5793 (long) S_GET_VALUE (symbol_get_tc (sym
)->u
.size
));
5796 else if (S_GET_STORAGE_CLASS (sym
) == C_FCN
5797 && strcmp (S_GET_NAME (sym
), ".ef") == 0)
5799 if (ppc_last_function
== (symbolS
*) NULL
)
5800 as_bad (_(".ef with no preceding .function"));
5803 set_end
= ppc_last_function
;
5804 ppc_last_function
= NULL
;
5806 /* We don't have a C_EFCN symbol, but we need to force the
5807 COFF backend to believe that it has seen one. */
5808 coff_last_function
= NULL
;
5812 if (! (S_IS_EXTERNAL (sym
) || S_IS_WEAK (sym
))
5813 && (symbol_get_bfdsym (sym
)->flags
& BSF_SECTION_SYM
) == 0
5814 && S_GET_STORAGE_CLASS (sym
) != C_FILE
5815 && S_GET_STORAGE_CLASS (sym
) != C_FCN
5816 && S_GET_STORAGE_CLASS (sym
) != C_BLOCK
5817 && S_GET_STORAGE_CLASS (sym
) != C_BSTAT
5818 && S_GET_STORAGE_CLASS (sym
) != C_ESTAT
5819 && S_GET_STORAGE_CLASS (sym
) != C_BINCL
5820 && S_GET_STORAGE_CLASS (sym
) != C_EINCL
5821 && S_GET_SEGMENT (sym
) != ppc_coff_debug_section
)
5822 S_SET_STORAGE_CLASS (sym
, C_HIDEXT
);
5824 if (S_GET_STORAGE_CLASS (sym
) == C_EXT
5825 || S_GET_STORAGE_CLASS (sym
) == C_AIX_WEAKEXT
5826 || S_GET_STORAGE_CLASS (sym
) == C_HIDEXT
)
5829 union internal_auxent
*a
;
5831 /* Create a csect aux. */
5832 i
= S_GET_NUMBER_AUXILIARY (sym
);
5833 S_SET_NUMBER_AUXILIARY (sym
, i
+ 1);
5834 a
= &coffsymbol (symbol_get_bfdsym (sym
))->native
[i
+ 1].u
.auxent
;
5835 if (symbol_get_tc (sym
)->symbol_class
== XMC_TC0
)
5837 /* This is the TOC table. */
5838 know (strcmp (S_GET_NAME (sym
), "TOC") == 0);
5839 a
->x_csect
.x_scnlen
.l
= 0;
5840 a
->x_csect
.x_smtyp
= (2 << 3) | XTY_SD
;
5842 else if (symbol_get_tc (sym
)->subseg
!= 0)
5844 /* This is a csect symbol. x_scnlen is the size of the
5846 if (symbol_get_tc (sym
)->next
== (symbolS
*) NULL
)
5847 a
->x_csect
.x_scnlen
.l
= (bfd_section_size (stdoutput
,
5848 S_GET_SEGMENT (sym
))
5849 - S_GET_VALUE (sym
));
5852 resolve_symbol_value (symbol_get_tc (sym
)->next
);
5853 a
->x_csect
.x_scnlen
.l
= (S_GET_VALUE (symbol_get_tc (sym
)->next
)
5854 - S_GET_VALUE (sym
));
5856 a
->x_csect
.x_smtyp
= (symbol_get_tc (sym
)->align
<< 3) | XTY_SD
;
5858 else if (S_GET_SEGMENT (sym
) == bss_section
)
5860 /* This is a common symbol. */
5861 a
->x_csect
.x_scnlen
.l
= symbol_get_frag (sym
)->fr_offset
;
5862 a
->x_csect
.x_smtyp
= (symbol_get_tc (sym
)->align
<< 3) | XTY_CM
;
5863 if (S_IS_EXTERNAL (sym
))
5864 symbol_get_tc (sym
)->symbol_class
= XMC_RW
;
5866 symbol_get_tc (sym
)->symbol_class
= XMC_BS
;
5868 else if (S_GET_SEGMENT (sym
) == absolute_section
)
5870 /* This is an absolute symbol. The csect will be created by
5871 ppc_adjust_symtab. */
5873 a
->x_csect
.x_smtyp
= XTY_LD
;
5874 if (symbol_get_tc (sym
)->symbol_class
== -1)
5875 symbol_get_tc (sym
)->symbol_class
= XMC_XO
;
5877 else if (! S_IS_DEFINED (sym
))
5879 /* This is an external symbol. */
5880 a
->x_csect
.x_scnlen
.l
= 0;
5881 a
->x_csect
.x_smtyp
= XTY_ER
;
5883 else if (symbol_get_tc (sym
)->symbol_class
== XMC_TC
)
5887 /* This is a TOC definition. x_scnlen is the size of the
5889 next
= symbol_next (sym
);
5890 while (symbol_get_tc (next
)->symbol_class
== XMC_TC0
)
5891 next
= symbol_next (next
);
5892 if (next
== (symbolS
*) NULL
5893 || symbol_get_tc (next
)->symbol_class
!= XMC_TC
)
5895 if (ppc_after_toc_frag
== (fragS
*) NULL
)
5896 a
->x_csect
.x_scnlen
.l
= (bfd_section_size (stdoutput
,
5898 - S_GET_VALUE (sym
));
5900 a
->x_csect
.x_scnlen
.l
= (ppc_after_toc_frag
->fr_address
5901 - S_GET_VALUE (sym
));
5905 resolve_symbol_value (next
);
5906 a
->x_csect
.x_scnlen
.l
= (S_GET_VALUE (next
)
5907 - S_GET_VALUE (sym
));
5909 a
->x_csect
.x_smtyp
= (2 << 3) | XTY_SD
;
5915 /* This is a normal symbol definition. x_scnlen is the
5916 symbol index of the containing csect. */
5917 if (S_GET_SEGMENT (sym
) == text_section
)
5918 csect
= ppc_text_csects
;
5919 else if (S_GET_SEGMENT (sym
) == data_section
)
5920 csect
= ppc_data_csects
;
5924 /* Skip the initial dummy symbol. */
5925 csect
= symbol_get_tc (csect
)->next
;
5927 if (csect
== (symbolS
*) NULL
)
5929 as_warn (_("warning: symbol %s has no csect"), S_GET_NAME (sym
));
5930 a
->x_csect
.x_scnlen
.l
= 0;
5934 while (symbol_get_tc (csect
)->next
!= (symbolS
*) NULL
)
5936 resolve_symbol_value (symbol_get_tc (csect
)->next
);
5937 if (S_GET_VALUE (symbol_get_tc (csect
)->next
)
5938 > S_GET_VALUE (sym
))
5940 csect
= symbol_get_tc (csect
)->next
;
5943 a
->x_csect
.x_scnlen
.p
=
5944 coffsymbol (symbol_get_bfdsym (csect
))->native
;
5945 coffsymbol (symbol_get_bfdsym (sym
))->native
[i
+ 1].fix_scnlen
=
5948 a
->x_csect
.x_smtyp
= XTY_LD
;
5951 a
->x_csect
.x_parmhash
= 0;
5952 a
->x_csect
.x_snhash
= 0;
5953 if (symbol_get_tc (sym
)->symbol_class
== -1)
5954 a
->x_csect
.x_smclas
= XMC_PR
;
5956 a
->x_csect
.x_smclas
= symbol_get_tc (sym
)->symbol_class
;
5957 a
->x_csect
.x_stab
= 0;
5958 a
->x_csect
.x_snstab
= 0;
5960 /* Don't let the COFF backend resort these symbols. */
5961 symbol_get_bfdsym (sym
)->flags
|= BSF_NOT_AT_END
;
5963 else if (S_GET_STORAGE_CLASS (sym
) == C_BSTAT
)
5965 /* We want the value to be the symbol index of the referenced
5966 csect symbol. BFD will do that for us if we set the right
5968 asymbol
*bsym
= symbol_get_bfdsym (symbol_get_tc (sym
)->within
);
5969 combined_entry_type
*c
= coffsymbol (bsym
)->native
;
5971 S_SET_VALUE (sym
, (valueT
) (size_t) c
);
5972 coffsymbol (symbol_get_bfdsym (sym
))->native
->fix_value
= 1;
5974 else if (S_GET_STORAGE_CLASS (sym
) == C_STSYM
)
5979 block
= symbol_get_tc (sym
)->within
;
5982 /* The value is the offset from the enclosing csect. */
5985 csect
= symbol_get_tc (block
)->within
;
5986 resolve_symbol_value (csect
);
5987 base
= S_GET_VALUE (csect
);
5992 S_SET_VALUE (sym
, S_GET_VALUE (sym
) - base
);
5994 else if (S_GET_STORAGE_CLASS (sym
) == C_BINCL
5995 || S_GET_STORAGE_CLASS (sym
) == C_EINCL
)
5997 /* We want the value to be a file offset into the line numbers.
5998 BFD will do that for us if we set the right flags. We have
5999 already set the value correctly. */
6000 coffsymbol (symbol_get_bfdsym (sym
))->native
->fix_line
= 1;
6006 /* Adjust the symbol table. This creates csect symbols for all
6007 absolute symbols. */
6010 ppc_adjust_symtab (void)
6017 for (sym
= symbol_rootP
; sym
!= NULL
; sym
= symbol_next (sym
))
6021 union internal_auxent
*a
;
6023 if (S_GET_SEGMENT (sym
) != absolute_section
)
6026 csect
= symbol_create (".abs[XO]", absolute_section
,
6027 S_GET_VALUE (sym
), &zero_address_frag
);
6028 symbol_get_bfdsym (csect
)->value
= S_GET_VALUE (sym
);
6029 S_SET_STORAGE_CLASS (csect
, C_HIDEXT
);
6030 i
= S_GET_NUMBER_AUXILIARY (csect
);
6031 S_SET_NUMBER_AUXILIARY (csect
, i
+ 1);
6032 a
= &coffsymbol (symbol_get_bfdsym (csect
))->native
[i
+ 1].u
.auxent
;
6033 a
->x_csect
.x_scnlen
.l
= 0;
6034 a
->x_csect
.x_smtyp
= XTY_SD
;
6035 a
->x_csect
.x_parmhash
= 0;
6036 a
->x_csect
.x_snhash
= 0;
6037 a
->x_csect
.x_smclas
= XMC_XO
;
6038 a
->x_csect
.x_stab
= 0;
6039 a
->x_csect
.x_snstab
= 0;
6041 symbol_insert (csect
, sym
, &symbol_rootP
, &symbol_lastP
);
6043 i
= S_GET_NUMBER_AUXILIARY (sym
);
6044 a
= &coffsymbol (symbol_get_bfdsym (sym
))->native
[i
].u
.auxent
;
6045 a
->x_csect
.x_scnlen
.p
= coffsymbol (symbol_get_bfdsym (csect
))->native
;
6046 coffsymbol (symbol_get_bfdsym (sym
))->native
[i
].fix_scnlen
= 1;
6049 ppc_saw_abs
= FALSE
;
6052 /* Set the VMA for a section. This is called on all the sections in
6056 ppc_frob_section (asection
*sec
)
6058 static bfd_vma vma
= 0;
6060 /* Dwarf sections start at 0. */
6061 if (bfd_get_section_flags (NULL
, sec
) & SEC_DEBUGGING
)
6064 vma
= md_section_align (sec
, vma
);
6065 bfd_set_section_vma (stdoutput
, sec
, vma
);
6066 vma
+= bfd_section_size (stdoutput
, sec
);
6069 #endif /* OBJ_XCOFF */
6072 md_atof (int type
, char *litp
, int *sizep
)
6074 return ieee_md_atof (type
, litp
, sizep
, target_big_endian
);
6077 /* Write a value out to the object file, using the appropriate
6081 md_number_to_chars (char *buf
, valueT val
, int n
)
6083 if (target_big_endian
)
6084 number_to_chars_bigendian (buf
, val
, n
);
6086 number_to_chars_littleendian (buf
, val
, n
);
6089 /* Align a section (I don't know why this is machine dependent). */
6092 md_section_align (asection
*seg ATTRIBUTE_UNUSED
, valueT addr
)
6097 int align
= bfd_get_section_alignment (stdoutput
, seg
);
6099 return ((addr
+ (1 << align
) - 1) & (-1 << align
));
6103 /* We don't have any form of relaxing. */
6106 md_estimate_size_before_relax (fragS
*fragp ATTRIBUTE_UNUSED
,
6107 asection
*seg ATTRIBUTE_UNUSED
)
6113 /* Convert a machine dependent frag. We never generate these. */
6116 md_convert_frag (bfd
*abfd ATTRIBUTE_UNUSED
,
6117 asection
*sec ATTRIBUTE_UNUSED
,
6118 fragS
*fragp ATTRIBUTE_UNUSED
)
6123 /* We have no need to default values of symbols. */
6126 md_undefined_symbol (char *name ATTRIBUTE_UNUSED
)
6131 /* Functions concerning relocs. */
6133 /* The location from which a PC relative jump should be calculated,
6134 given a PC relative reloc. */
6137 md_pcrel_from_section (fixS
*fixp
, segT sec ATTRIBUTE_UNUSED
)
6139 return fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
6144 /* This is called to see whether a fixup should be adjusted to use a
6145 section symbol. We take the opportunity to change a fixup against
6146 a symbol in the TOC subsegment into a reloc against the
6147 corresponding .tc symbol. */
6150 ppc_fix_adjustable (fixS
*fix
)
6152 valueT val
= resolve_symbol_value (fix
->fx_addsy
);
6153 segT symseg
= S_GET_SEGMENT (fix
->fx_addsy
);
6154 TC_SYMFIELD_TYPE
*tc
;
6156 if (symseg
== absolute_section
)
6159 /* Always adjust symbols in debugging sections. */
6160 if (bfd_get_section_flags (stdoutput
, symseg
) & SEC_DEBUGGING
)
6163 if (ppc_toc_csect
!= (symbolS
*) NULL
6164 && fix
->fx_addsy
!= ppc_toc_csect
6165 && symseg
== data_section
6166 && val
>= ppc_toc_frag
->fr_address
6167 && (ppc_after_toc_frag
== (fragS
*) NULL
6168 || val
< ppc_after_toc_frag
->fr_address
))
6172 for (sy
= symbol_next (ppc_toc_csect
);
6173 sy
!= (symbolS
*) NULL
;
6174 sy
= symbol_next (sy
))
6176 TC_SYMFIELD_TYPE
*sy_tc
= symbol_get_tc (sy
);
6178 if (sy_tc
->symbol_class
== XMC_TC0
)
6180 if (sy_tc
->symbol_class
!= XMC_TC
)
6182 if (val
== resolve_symbol_value (sy
))
6185 fix
->fx_addnumber
= val
- ppc_toc_frag
->fr_address
;
6190 as_bad_where (fix
->fx_file
, fix
->fx_line
,
6191 _("symbol in .toc does not match any .tc"));
6194 /* Possibly adjust the reloc to be against the csect. */
6195 tc
= symbol_get_tc (fix
->fx_addsy
);
6197 && tc
->symbol_class
!= XMC_TC0
6198 && tc
->symbol_class
!= XMC_TC
6199 && symseg
!= bss_section
6200 /* Don't adjust if this is a reloc in the toc section. */
6201 && (symseg
!= data_section
6202 || ppc_toc_csect
== NULL
6203 || val
< ppc_toc_frag
->fr_address
6204 || (ppc_after_toc_frag
!= NULL
6205 && val
>= ppc_after_toc_frag
->fr_address
)))
6207 symbolS
*csect
= tc
->within
;
6209 /* If the symbol was not declared by a label (eg: a section symbol),
6210 use the section instead of the csect. This doesn't happen in
6211 normal AIX assembly code. */
6213 csect
= seg_info (symseg
)->sym
;
6215 fix
->fx_offset
+= val
- symbol_get_frag (csect
)->fr_address
;
6216 fix
->fx_addsy
= csect
;
6221 /* Adjust a reloc against a .lcomm symbol to be against the base
6223 if (symseg
== bss_section
6224 && ! S_IS_EXTERNAL (fix
->fx_addsy
))
6226 symbolS
*sy
= symbol_get_frag (fix
->fx_addsy
)->fr_symbol
;
6228 fix
->fx_offset
+= val
- resolve_symbol_value (sy
);
6235 /* A reloc from one csect to another must be kept. The assembler
6236 will, of course, keep relocs between sections, and it will keep
6237 absolute relocs, but we need to force it to keep PC relative relocs
6238 between two csects in the same section. */
6241 ppc_force_relocation (fixS
*fix
)
6243 /* At this point fix->fx_addsy should already have been converted to
6244 a csect symbol. If the csect does not include the fragment, then
6245 we need to force the relocation. */
6247 && fix
->fx_addsy
!= NULL
6248 && symbol_get_tc (fix
->fx_addsy
)->subseg
!= 0
6249 && ((symbol_get_frag (fix
->fx_addsy
)->fr_address
6250 > fix
->fx_frag
->fr_address
)
6251 || (symbol_get_tc (fix
->fx_addsy
)->next
!= NULL
6252 && (symbol_get_frag (symbol_get_tc (fix
->fx_addsy
)->next
)->fr_address
6253 <= fix
->fx_frag
->fr_address
))))
6256 return generic_force_reloc (fix
);
6260 ppc_new_dot_label (symbolS
*sym
)
6262 /* Anchor this label to the current csect for relocations. */
6263 symbol_get_tc (sym
)->within
= ppc_current_csect
;
6266 #endif /* OBJ_XCOFF */
6269 /* If this function returns non-zero, it guarantees that a relocation
6270 will be emitted for a fixup. */
6273 ppc_force_relocation (fixS
*fix
)
6275 /* Branch prediction relocations must force a relocation, as must
6276 the vtable description relocs. */
6277 switch (fix
->fx_r_type
)
6279 case BFD_RELOC_PPC_B16_BRTAKEN
:
6280 case BFD_RELOC_PPC_B16_BRNTAKEN
:
6281 case BFD_RELOC_PPC_BA16_BRTAKEN
:
6282 case BFD_RELOC_PPC_BA16_BRNTAKEN
:
6283 case BFD_RELOC_24_PLT_PCREL
:
6284 case BFD_RELOC_PPC64_TOC
:
6286 case BFD_RELOC_PPC_B26
:
6287 case BFD_RELOC_PPC_BA26
:
6288 case BFD_RELOC_PPC_B16
:
6289 case BFD_RELOC_PPC_BA16
:
6290 /* All branch fixups targeting a localentry symbol must
6291 force a relocation. */
6294 asymbol
*bfdsym
= symbol_get_bfdsym (fix
->fx_addsy
);
6295 elf_symbol_type
*elfsym
6296 = elf_symbol_from (bfd_asymbol_bfd (bfdsym
), bfdsym
);
6297 gas_assert (elfsym
);
6298 if ((STO_PPC64_LOCAL_MASK
& elfsym
->internal_elf_sym
.st_other
) != 0)
6306 if (fix
->fx_r_type
>= BFD_RELOC_PPC_TLS
6307 && fix
->fx_r_type
<= BFD_RELOC_PPC64_DTPREL16_HIGHESTA
)
6310 return generic_force_reloc (fix
);
6314 ppc_fix_adjustable (fixS
*fix
)
6316 switch (fix
->fx_r_type
)
6318 /* All branch fixups targeting a localentry symbol must
6319 continue using the symbol. */
6320 case BFD_RELOC_PPC_B26
:
6321 case BFD_RELOC_PPC_BA26
:
6322 case BFD_RELOC_PPC_B16
:
6323 case BFD_RELOC_PPC_BA16
:
6324 case BFD_RELOC_PPC_B16_BRTAKEN
:
6325 case BFD_RELOC_PPC_B16_BRNTAKEN
:
6326 case BFD_RELOC_PPC_BA16_BRTAKEN
:
6327 case BFD_RELOC_PPC_BA16_BRNTAKEN
:
6330 asymbol
*bfdsym
= symbol_get_bfdsym (fix
->fx_addsy
);
6331 elf_symbol_type
*elfsym
6332 = elf_symbol_from (bfd_asymbol_bfd (bfdsym
), bfdsym
);
6333 gas_assert (elfsym
);
6334 if ((STO_PPC64_LOCAL_MASK
& elfsym
->internal_elf_sym
.st_other
) != 0)
6342 return (fix
->fx_r_type
!= BFD_RELOC_16_GOTOFF
6343 && fix
->fx_r_type
!= BFD_RELOC_LO16_GOTOFF
6344 && fix
->fx_r_type
!= BFD_RELOC_HI16_GOTOFF
6345 && fix
->fx_r_type
!= BFD_RELOC_HI16_S_GOTOFF
6346 && fix
->fx_r_type
!= BFD_RELOC_PPC64_GOT16_DS
6347 && fix
->fx_r_type
!= BFD_RELOC_PPC64_GOT16_LO_DS
6348 && fix
->fx_r_type
!= BFD_RELOC_GPREL16
6349 && fix
->fx_r_type
!= BFD_RELOC_VTABLE_INHERIT
6350 && fix
->fx_r_type
!= BFD_RELOC_VTABLE_ENTRY
6351 && !(fix
->fx_r_type
>= BFD_RELOC_PPC_TLS
6352 && fix
->fx_r_type
<= BFD_RELOC_PPC64_DTPREL16_HIGHESTA
));
6357 ppc_frag_check (struct frag
*fragP
)
6359 if (!fragP
->has_code
)
6362 if (ppc_mach() == bfd_mach_ppc_vle
)
6364 if (((fragP
->fr_address
+ fragP
->insn_addr
) & 1) != 0)
6365 as_bad (_("instruction address is not a multiple of 2"));
6369 if (((fragP
->fr_address
+ fragP
->insn_addr
) & 3) != 0)
6370 as_bad (_("instruction address is not a multiple of 4"));
6374 /* Implement HANDLE_ALIGN. This writes the NOP pattern into an
6375 rs_align_code frag. */
6378 ppc_handle_align (struct frag
*fragP
)
6380 valueT count
= (fragP
->fr_next
->fr_address
6381 - (fragP
->fr_address
+ fragP
->fr_fix
));
6383 if (ppc_mach() == bfd_mach_ppc_vle
&& count
!= 0 && (count
& 1) == 0)
6385 char *dest
= fragP
->fr_literal
+ fragP
->fr_fix
;
6388 md_number_to_chars (dest
, 0x4400, 2);
6390 else if (count
!= 0 && (count
& 3) == 0)
6392 char *dest
= fragP
->fr_literal
+ fragP
->fr_fix
;
6396 if (count
> 4 * nop_limit
&& count
< 0x2000000)
6400 /* Make a branch, then follow with nops. Insert another
6401 frag to handle the nops. */
6402 md_number_to_chars (dest
, 0x48000000 + count
, 4);
6407 rest
= xmalloc (SIZEOF_STRUCT_FRAG
+ 4);
6408 memcpy (rest
, fragP
, SIZEOF_STRUCT_FRAG
);
6409 fragP
->fr_next
= rest
;
6411 rest
->fr_address
+= rest
->fr_fix
+ 4;
6413 /* If we leave the next frag as rs_align_code we'll come here
6414 again, resulting in a bunch of branches rather than a
6415 branch followed by nops. */
6416 rest
->fr_type
= rs_align
;
6417 dest
= rest
->fr_literal
;
6420 md_number_to_chars (dest
, 0x60000000, 4);
6422 if ((ppc_cpu
& PPC_OPCODE_POWER6
) != 0
6423 || (ppc_cpu
& PPC_OPCODE_POWER7
) != 0
6424 || (ppc_cpu
& PPC_OPCODE_POWER8
) != 0)
6426 /* For power6, power7 and power8, we want the last nop to be a group
6427 terminating one. Do this by inserting an rs_fill frag immediately
6428 after this one, with its address set to the last nop location.
6429 This will automatically reduce the number of nops in the current
6433 struct frag
*group_nop
= xmalloc (SIZEOF_STRUCT_FRAG
+ 4);
6435 memcpy (group_nop
, fragP
, SIZEOF_STRUCT_FRAG
);
6436 group_nop
->fr_address
= group_nop
->fr_next
->fr_address
- 4;
6437 group_nop
->fr_fix
= 0;
6438 group_nop
->fr_offset
= 1;
6439 group_nop
->fr_type
= rs_fill
;
6440 fragP
->fr_next
= group_nop
;
6441 dest
= group_nop
->fr_literal
;
6444 if ((ppc_cpu
& PPC_OPCODE_POWER7
) != 0
6445 || (ppc_cpu
& PPC_OPCODE_POWER8
) != 0)
6447 if (ppc_cpu
& PPC_OPCODE_E500MC
)
6448 /* e500mc group terminating nop: "ori 0,0,0". */
6449 md_number_to_chars (dest
, 0x60000000, 4);
6451 /* power7/power8 group terminating nop: "ori 2,2,0". */
6452 md_number_to_chars (dest
, 0x60420000, 4);
6455 /* power6 group terminating nop: "ori 1,1,0". */
6456 md_number_to_chars (dest
, 0x60210000, 4);
6461 /* Apply a fixup to the object code. This is called for all the
6462 fixups we generated by the calls to fix_new_exp, above. */
6465 md_apply_fix (fixS
*fixP
, valueT
*valP
, segT seg ATTRIBUTE_UNUSED
)
6467 valueT value
= * valP
;
6469 const struct powerpc_operand
*operand
;
6472 if (fixP
->fx_addsy
!= NULL
)
6474 /* Hack around bfd_install_relocation brain damage. */
6476 value
+= fixP
->fx_frag
->fr_address
+ fixP
->fx_where
;
6481 /* FIXME FIXME FIXME: The value we are passed in *valP includes
6482 the symbol values. If we are doing this relocation the code in
6483 write.c is going to call bfd_install_relocation, which is also
6484 going to use the symbol value. That means that if the reloc is
6485 fully resolved we want to use *valP since bfd_install_relocation is
6487 However, if the reloc is not fully resolved we do not want to
6488 use *valP, and must use fx_offset instead. If the relocation
6489 is PC-relative, we then need to re-apply md_pcrel_from_section
6490 to this new relocation value. */
6491 if (fixP
->fx_addsy
== (symbolS
*) NULL
)
6496 value
= fixP
->fx_offset
;
6498 value
-= md_pcrel_from_section (fixP
, seg
);
6502 if (fixP
->fx_subsy
!= (symbolS
*) NULL
)
6504 /* We can't actually support subtracting a symbol. */
6505 as_bad_where (fixP
->fx_file
, fixP
->fx_line
, _("expression too complex"));
6509 if (fixP
->fx_pcrel_adjust
!= 0)
6511 /* This is a fixup on an instruction. */
6512 int opindex
= fixP
->fx_pcrel_adjust
& 0xff;
6514 operand
= &powerpc_operands
[opindex
];
6516 /* An instruction like `lwz 9,sym(30)' when `sym' is not a TOC symbol
6517 does not generate a reloc. It uses the offset of `sym' within its
6518 csect. Other usages, such as `.long sym', generate relocs. This
6519 is the documented behaviour of non-TOC symbols. */
6520 if ((operand
->flags
& PPC_OPERAND_PARENS
) != 0
6521 && (operand
->bitm
& 0xfff0) == 0xfff0
6522 && operand
->shift
== 0
6523 && (operand
->insert
== NULL
|| ppc_obj64
)
6524 && fixP
->fx_addsy
!= NULL
6525 && symbol_get_tc (fixP
->fx_addsy
)->subseg
!= 0
6526 && symbol_get_tc (fixP
->fx_addsy
)->symbol_class
!= XMC_TC
6527 && symbol_get_tc (fixP
->fx_addsy
)->symbol_class
!= XMC_TC0
6528 && S_GET_SEGMENT (fixP
->fx_addsy
) != bss_section
)
6530 value
= fixP
->fx_offset
;
6534 /* During parsing of instructions, a TOC16 reloc is generated for
6535 instructions such as 'lwz RT,SYM(RB)' if SYM is a symbol defined
6536 in the toc. But at parse time, SYM may be not yet defined, so
6537 check again here. */
6538 if (fixP
->fx_r_type
== BFD_RELOC_16
6539 && fixP
->fx_addsy
!= NULL
6540 && ppc_is_toc_sym (fixP
->fx_addsy
))
6541 fixP
->fx_r_type
= BFD_RELOC_PPC_TOC16
;
6545 /* Calculate value to be stored in field. */
6547 switch (fixP
->fx_r_type
)
6550 case BFD_RELOC_PPC64_ADDR16_LO_DS
:
6551 case BFD_RELOC_PPC_VLE_LO16A
:
6552 case BFD_RELOC_PPC_VLE_LO16D
:
6554 case BFD_RELOC_LO16
:
6555 case BFD_RELOC_LO16_PCREL
:
6556 fieldval
= value
& 0xffff;
6558 if (operand
!= NULL
&& (operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
6559 fieldval
= SEX16 (fieldval
);
6560 fixP
->fx_no_overflow
= 1;
6563 case BFD_RELOC_HI16
:
6564 case BFD_RELOC_HI16_PCREL
:
6566 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
6568 fieldval
= value
>> 16;
6569 if (operand
!= NULL
&& (operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
6571 valueT sign
= (((valueT
) -1 >> 16) + 1) >> 1;
6572 fieldval
= ((valueT
) fieldval
^ sign
) - sign
;
6578 case BFD_RELOC_PPC_VLE_HI16A
:
6579 case BFD_RELOC_PPC_VLE_HI16D
:
6580 case BFD_RELOC_PPC64_ADDR16_HIGH
:
6582 fieldval
= PPC_HI (value
);
6583 goto sign_extend_16
;
6585 case BFD_RELOC_HI16_S
:
6586 case BFD_RELOC_HI16_S_PCREL
:
6588 if (REPORT_OVERFLOW_HI
&& ppc_obj64
)
6590 fieldval
= (value
+ 0x8000) >> 16;
6591 if (operand
!= NULL
&& (operand
->flags
& PPC_OPERAND_SIGNED
) != 0)
6593 valueT sign
= (((valueT
) -1 >> 16) + 1) >> 1;
6594 fieldval
= ((valueT
) fieldval
^ sign
) - sign
;
6600 case BFD_RELOC_PPC_VLE_HA16A
:
6601 case BFD_RELOC_PPC_VLE_HA16D
:
6602 case BFD_RELOC_PPC64_ADDR16_HIGHA
:
6604 fieldval
= PPC_HA (value
);
6605 goto sign_extend_16
;
6608 case BFD_RELOC_PPC64_HIGHER
:
6609 fieldval
= PPC_HIGHER (value
);
6610 goto sign_extend_16
;
6612 case BFD_RELOC_PPC64_HIGHER_S
:
6613 fieldval
= PPC_HIGHERA (value
);
6614 goto sign_extend_16
;
6616 case BFD_RELOC_PPC64_HIGHEST
:
6617 fieldval
= PPC_HIGHEST (value
);
6618 goto sign_extend_16
;
6620 case BFD_RELOC_PPC64_HIGHEST_S
:
6621 fieldval
= PPC_HIGHESTA (value
);
6622 goto sign_extend_16
;
6629 if (operand
!= NULL
)
6631 /* Handle relocs in an insn. */
6635 switch (fixP
->fx_r_type
)
6638 /* The following relocs can't be calculated by the assembler.
6639 Leave the field zero. */
6640 case BFD_RELOC_PPC_TPREL16
:
6641 case BFD_RELOC_PPC_TPREL16_LO
:
6642 case BFD_RELOC_PPC_TPREL16_HI
:
6643 case BFD_RELOC_PPC_TPREL16_HA
:
6644 case BFD_RELOC_PPC_DTPREL16
:
6645 case BFD_RELOC_PPC_DTPREL16_LO
:
6646 case BFD_RELOC_PPC_DTPREL16_HI
:
6647 case BFD_RELOC_PPC_DTPREL16_HA
:
6648 case BFD_RELOC_PPC_GOT_TLSGD16
:
6649 case BFD_RELOC_PPC_GOT_TLSGD16_LO
:
6650 case BFD_RELOC_PPC_GOT_TLSGD16_HI
:
6651 case BFD_RELOC_PPC_GOT_TLSGD16_HA
:
6652 case BFD_RELOC_PPC_GOT_TLSLD16
:
6653 case BFD_RELOC_PPC_GOT_TLSLD16_LO
:
6654 case BFD_RELOC_PPC_GOT_TLSLD16_HI
:
6655 case BFD_RELOC_PPC_GOT_TLSLD16_HA
:
6656 case BFD_RELOC_PPC_GOT_TPREL16
:
6657 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
6658 case BFD_RELOC_PPC_GOT_TPREL16_HI
:
6659 case BFD_RELOC_PPC_GOT_TPREL16_HA
:
6660 case BFD_RELOC_PPC_GOT_DTPREL16
:
6661 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
6662 case BFD_RELOC_PPC_GOT_DTPREL16_HI
:
6663 case BFD_RELOC_PPC_GOT_DTPREL16_HA
:
6664 case BFD_RELOC_PPC64_TPREL16_DS
:
6665 case BFD_RELOC_PPC64_TPREL16_LO_DS
:
6666 case BFD_RELOC_PPC64_TPREL16_HIGH
:
6667 case BFD_RELOC_PPC64_TPREL16_HIGHA
:
6668 case BFD_RELOC_PPC64_TPREL16_HIGHER
:
6669 case BFD_RELOC_PPC64_TPREL16_HIGHERA
:
6670 case BFD_RELOC_PPC64_TPREL16_HIGHEST
:
6671 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
:
6672 case BFD_RELOC_PPC64_DTPREL16_HIGH
:
6673 case BFD_RELOC_PPC64_DTPREL16_HIGHA
:
6674 case BFD_RELOC_PPC64_DTPREL16_DS
:
6675 case BFD_RELOC_PPC64_DTPREL16_LO_DS
:
6676 case BFD_RELOC_PPC64_DTPREL16_HIGHER
:
6677 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
:
6678 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
:
6679 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
:
6680 gas_assert (fixP
->fx_addsy
!= NULL
);
6681 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
6685 /* These also should leave the field zero for the same
6686 reason. Note that older versions of gas wrote values
6687 here. If we want to go back to the old behaviour, then
6688 all _LO and _LO_DS cases will need to be treated like
6689 BFD_RELOC_LO16_PCREL above. Similarly for _HI etc. */
6690 case BFD_RELOC_16_GOTOFF
:
6691 case BFD_RELOC_LO16_GOTOFF
:
6692 case BFD_RELOC_HI16_GOTOFF
:
6693 case BFD_RELOC_HI16_S_GOTOFF
:
6694 case BFD_RELOC_LO16_PLTOFF
:
6695 case BFD_RELOC_HI16_PLTOFF
:
6696 case BFD_RELOC_HI16_S_PLTOFF
:
6697 case BFD_RELOC_GPREL16
:
6698 case BFD_RELOC_16_BASEREL
:
6699 case BFD_RELOC_LO16_BASEREL
:
6700 case BFD_RELOC_HI16_BASEREL
:
6701 case BFD_RELOC_HI16_S_BASEREL
:
6702 case BFD_RELOC_PPC_TOC16
:
6703 case BFD_RELOC_PPC64_TOC16_LO
:
6704 case BFD_RELOC_PPC64_TOC16_HI
:
6705 case BFD_RELOC_PPC64_TOC16_HA
:
6706 case BFD_RELOC_PPC64_PLTGOT16
:
6707 case BFD_RELOC_PPC64_PLTGOT16_LO
:
6708 case BFD_RELOC_PPC64_PLTGOT16_HI
:
6709 case BFD_RELOC_PPC64_PLTGOT16_HA
:
6710 case BFD_RELOC_PPC64_GOT16_DS
:
6711 case BFD_RELOC_PPC64_GOT16_LO_DS
:
6712 case BFD_RELOC_PPC64_PLT16_LO_DS
:
6713 case BFD_RELOC_PPC64_SECTOFF_DS
:
6714 case BFD_RELOC_PPC64_SECTOFF_LO_DS
:
6715 case BFD_RELOC_PPC64_TOC16_DS
:
6716 case BFD_RELOC_PPC64_TOC16_LO_DS
:
6717 case BFD_RELOC_PPC64_PLTGOT16_DS
:
6718 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
:
6719 case BFD_RELOC_PPC_EMB_NADDR16
:
6720 case BFD_RELOC_PPC_EMB_NADDR16_LO
:
6721 case BFD_RELOC_PPC_EMB_NADDR16_HI
:
6722 case BFD_RELOC_PPC_EMB_NADDR16_HA
:
6723 case BFD_RELOC_PPC_EMB_SDAI16
:
6724 case BFD_RELOC_PPC_EMB_SDA2I16
:
6725 case BFD_RELOC_PPC_EMB_SDA2REL
:
6726 case BFD_RELOC_PPC_EMB_SDA21
:
6727 case BFD_RELOC_PPC_EMB_MRKREF
:
6728 case BFD_RELOC_PPC_EMB_RELSEC16
:
6729 case BFD_RELOC_PPC_EMB_RELST_LO
:
6730 case BFD_RELOC_PPC_EMB_RELST_HI
:
6731 case BFD_RELOC_PPC_EMB_RELST_HA
:
6732 case BFD_RELOC_PPC_EMB_BIT_FLD
:
6733 case BFD_RELOC_PPC_EMB_RELSDA
:
6734 case BFD_RELOC_PPC_VLE_SDA21
:
6735 case BFD_RELOC_PPC_VLE_SDA21_LO
:
6736 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
6737 case BFD_RELOC_PPC_VLE_SDAREL_LO16D
:
6738 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
6739 case BFD_RELOC_PPC_VLE_SDAREL_HI16D
:
6740 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
6741 case BFD_RELOC_PPC_VLE_SDAREL_HA16D
:
6742 gas_assert (fixP
->fx_addsy
!= NULL
);
6745 case BFD_RELOC_PPC_TLS
:
6746 case BFD_RELOC_PPC_TLSGD
:
6747 case BFD_RELOC_PPC_TLSLD
:
6753 case BFD_RELOC_PPC_B16
:
6754 /* Adjust the offset to the instruction boundary. */
6764 /* powerpc uses RELA style relocs, so if emitting a reloc the field
6765 contents can stay at zero. */
6766 #define APPLY_RELOC fixP->fx_done
6768 #define APPLY_RELOC 1
6770 if ((fieldval
!= 0 && APPLY_RELOC
) || operand
->insert
!= NULL
)
6772 /* Fetch the instruction, insert the fully resolved operand
6773 value, and stuff the instruction back again. */
6774 where
= fixP
->fx_frag
->fr_literal
+ fixP
->fx_where
;
6775 if (target_big_endian
)
6777 if (fixP
->fx_size
== 4)
6778 insn
= bfd_getb32 ((unsigned char *) where
);
6780 insn
= bfd_getb16 ((unsigned char *) where
);
6784 if (fixP
->fx_size
== 4)
6785 insn
= bfd_getl32 ((unsigned char *) where
);
6787 insn
= bfd_getl16 ((unsigned char *) where
);
6789 insn
= ppc_insert_operand (insn
, operand
, fieldval
,
6790 fixP
->tc_fix_data
.ppc_cpu
,
6791 fixP
->fx_file
, fixP
->fx_line
);
6792 if (target_big_endian
)
6794 if (fixP
->fx_size
== 4)
6795 bfd_putb32 ((bfd_vma
) insn
, (unsigned char *) where
);
6797 bfd_putb16 ((bfd_vma
) insn
, (unsigned char *) where
);
6801 if (fixP
->fx_size
== 4)
6802 bfd_putl32 ((bfd_vma
) insn
, (unsigned char *) where
);
6804 bfd_putl16 ((bfd_vma
) insn
, (unsigned char *) where
);
6809 /* Nothing else to do here. */
6812 gas_assert (fixP
->fx_addsy
!= NULL
);
6813 if (fixP
->fx_r_type
== BFD_RELOC_UNUSED
)
6818 /* Use expr_symbol_where to see if this is an expression
6820 if (expr_symbol_where (fixP
->fx_addsy
, &sfile
, &sline
))
6821 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
6822 _("unresolved expression that must be resolved"));
6824 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
6825 _("unsupported relocation against %s"),
6826 S_GET_NAME (fixP
->fx_addsy
));
6833 /* Handle relocs in data. */
6834 switch (fixP
->fx_r_type
)
6836 case BFD_RELOC_VTABLE_INHERIT
:
6838 && !S_IS_DEFINED (fixP
->fx_addsy
)
6839 && !S_IS_WEAK (fixP
->fx_addsy
))
6840 S_SET_WEAK (fixP
->fx_addsy
);
6843 case BFD_RELOC_VTABLE_ENTRY
:
6848 /* These can appear with @l etc. in data. */
6849 case BFD_RELOC_LO16
:
6850 case BFD_RELOC_LO16_PCREL
:
6851 case BFD_RELOC_HI16
:
6852 case BFD_RELOC_HI16_PCREL
:
6853 case BFD_RELOC_HI16_S
:
6854 case BFD_RELOC_HI16_S_PCREL
:
6855 case BFD_RELOC_PPC64_HIGHER
:
6856 case BFD_RELOC_PPC64_HIGHER_S
:
6857 case BFD_RELOC_PPC64_HIGHEST
:
6858 case BFD_RELOC_PPC64_HIGHEST_S
:
6859 case BFD_RELOC_PPC64_ADDR16_HIGH
:
6860 case BFD_RELOC_PPC64_ADDR16_HIGHA
:
6861 case BFD_RELOC_PPC64_ADDR64_LOCAL
:
6864 case BFD_RELOC_PPC_DTPMOD
:
6865 case BFD_RELOC_PPC_TPREL
:
6866 case BFD_RELOC_PPC_DTPREL
:
6867 S_SET_THREAD_LOCAL (fixP
->fx_addsy
);
6870 /* Just punt all of these to the linker. */
6871 case BFD_RELOC_PPC_B16_BRTAKEN
:
6872 case BFD_RELOC_PPC_B16_BRNTAKEN
:
6873 case BFD_RELOC_16_GOTOFF
:
6874 case BFD_RELOC_LO16_GOTOFF
:
6875 case BFD_RELOC_HI16_GOTOFF
:
6876 case BFD_RELOC_HI16_S_GOTOFF
:
6877 case BFD_RELOC_LO16_PLTOFF
:
6878 case BFD_RELOC_HI16_PLTOFF
:
6879 case BFD_RELOC_HI16_S_PLTOFF
:
6880 case BFD_RELOC_PPC_COPY
:
6881 case BFD_RELOC_PPC_GLOB_DAT
:
6882 case BFD_RELOC_16_BASEREL
:
6883 case BFD_RELOC_LO16_BASEREL
:
6884 case BFD_RELOC_HI16_BASEREL
:
6885 case BFD_RELOC_HI16_S_BASEREL
:
6886 case BFD_RELOC_PPC_TLS
:
6887 case BFD_RELOC_PPC_DTPREL16_LO
:
6888 case BFD_RELOC_PPC_DTPREL16_HI
:
6889 case BFD_RELOC_PPC_DTPREL16_HA
:
6890 case BFD_RELOC_PPC_TPREL16_LO
:
6891 case BFD_RELOC_PPC_TPREL16_HI
:
6892 case BFD_RELOC_PPC_TPREL16_HA
:
6893 case BFD_RELOC_PPC_GOT_TLSGD16
:
6894 case BFD_RELOC_PPC_GOT_TLSGD16_LO
:
6895 case BFD_RELOC_PPC_GOT_TLSGD16_HI
:
6896 case BFD_RELOC_PPC_GOT_TLSGD16_HA
:
6897 case BFD_RELOC_PPC_GOT_TLSLD16
:
6898 case BFD_RELOC_PPC_GOT_TLSLD16_LO
:
6899 case BFD_RELOC_PPC_GOT_TLSLD16_HI
:
6900 case BFD_RELOC_PPC_GOT_TLSLD16_HA
:
6901 case BFD_RELOC_PPC_GOT_DTPREL16
:
6902 case BFD_RELOC_PPC_GOT_DTPREL16_LO
:
6903 case BFD_RELOC_PPC_GOT_DTPREL16_HI
:
6904 case BFD_RELOC_PPC_GOT_DTPREL16_HA
:
6905 case BFD_RELOC_PPC_GOT_TPREL16
:
6906 case BFD_RELOC_PPC_GOT_TPREL16_LO
:
6907 case BFD_RELOC_PPC_GOT_TPREL16_HI
:
6908 case BFD_RELOC_PPC_GOT_TPREL16_HA
:
6909 case BFD_RELOC_24_PLT_PCREL
:
6910 case BFD_RELOC_PPC_LOCAL24PC
:
6911 case BFD_RELOC_32_PLT_PCREL
:
6912 case BFD_RELOC_GPREL16
:
6913 case BFD_RELOC_PPC_VLE_SDAREL_LO16A
:
6914 case BFD_RELOC_PPC_VLE_SDAREL_HI16A
:
6915 case BFD_RELOC_PPC_VLE_SDAREL_HA16A
:
6916 case BFD_RELOC_PPC_EMB_NADDR32
:
6917 case BFD_RELOC_PPC_EMB_NADDR16
:
6918 case BFD_RELOC_PPC_EMB_NADDR16_LO
:
6919 case BFD_RELOC_PPC_EMB_NADDR16_HI
:
6920 case BFD_RELOC_PPC_EMB_NADDR16_HA
:
6921 case BFD_RELOC_PPC_EMB_SDAI16
:
6922 case BFD_RELOC_PPC_EMB_SDA2REL
:
6923 case BFD_RELOC_PPC_EMB_SDA2I16
:
6924 case BFD_RELOC_PPC_EMB_SDA21
:
6925 case BFD_RELOC_PPC_VLE_SDA21_LO
:
6926 case BFD_RELOC_PPC_EMB_MRKREF
:
6927 case BFD_RELOC_PPC_EMB_RELSEC16
:
6928 case BFD_RELOC_PPC_EMB_RELST_LO
:
6929 case BFD_RELOC_PPC_EMB_RELST_HI
:
6930 case BFD_RELOC_PPC_EMB_RELST_HA
:
6931 case BFD_RELOC_PPC_EMB_BIT_FLD
:
6932 case BFD_RELOC_PPC_EMB_RELSDA
:
6933 case BFD_RELOC_PPC64_TOC
:
6934 case BFD_RELOC_PPC_TOC16
:
6935 case BFD_RELOC_PPC64_TOC16_LO
:
6936 case BFD_RELOC_PPC64_TOC16_HI
:
6937 case BFD_RELOC_PPC64_TOC16_HA
:
6938 case BFD_RELOC_PPC64_DTPREL16_HIGH
:
6939 case BFD_RELOC_PPC64_DTPREL16_HIGHA
:
6940 case BFD_RELOC_PPC64_DTPREL16_HIGHER
:
6941 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
:
6942 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
:
6943 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
:
6944 case BFD_RELOC_PPC64_TPREL16_HIGH
:
6945 case BFD_RELOC_PPC64_TPREL16_HIGHA
:
6946 case BFD_RELOC_PPC64_TPREL16_HIGHER
:
6947 case BFD_RELOC_PPC64_TPREL16_HIGHERA
:
6948 case BFD_RELOC_PPC64_TPREL16_HIGHEST
:
6949 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
:
6955 case BFD_RELOC_NONE
:
6957 case BFD_RELOC_CTOR
:
6959 case BFD_RELOC_32_PCREL
:
6962 case BFD_RELOC_64_PCREL
:
6964 case BFD_RELOC_16_PCREL
:
6970 _("Gas failure, reloc value %d\n"), fixP
->fx_r_type
);
6975 if (fixP
->fx_size
&& APPLY_RELOC
)
6976 md_number_to_chars (fixP
->fx_frag
->fr_literal
+ fixP
->fx_where
,
6977 fieldval
, fixP
->fx_size
);
6980 /* We are only able to convert some relocs to pc-relative. */
6981 if (!fixP
->fx_done
&& fixP
->fx_pcrel
)
6983 switch (fixP
->fx_r_type
)
6985 case BFD_RELOC_LO16
:
6986 fixP
->fx_r_type
= BFD_RELOC_LO16_PCREL
;
6989 case BFD_RELOC_HI16
:
6990 fixP
->fx_r_type
= BFD_RELOC_HI16_PCREL
;
6993 case BFD_RELOC_HI16_S
:
6994 fixP
->fx_r_type
= BFD_RELOC_HI16_S_PCREL
;
6998 fixP
->fx_r_type
= BFD_RELOC_64_PCREL
;
7002 fixP
->fx_r_type
= BFD_RELOC_32_PCREL
;
7006 fixP
->fx_r_type
= BFD_RELOC_16_PCREL
;
7009 /* Some of course are already pc-relative. */
7010 case BFD_RELOC_LO16_PCREL
:
7011 case BFD_RELOC_HI16_PCREL
:
7012 case BFD_RELOC_HI16_S_PCREL
:
7013 case BFD_RELOC_64_PCREL
:
7014 case BFD_RELOC_32_PCREL
:
7015 case BFD_RELOC_16_PCREL
:
7016 case BFD_RELOC_PPC_B16
:
7017 case BFD_RELOC_PPC_B16_BRTAKEN
:
7018 case BFD_RELOC_PPC_B16_BRNTAKEN
:
7019 case BFD_RELOC_PPC_B26
:
7020 case BFD_RELOC_PPC_LOCAL24PC
:
7021 case BFD_RELOC_24_PLT_PCREL
:
7022 case BFD_RELOC_32_PLT_PCREL
:
7023 case BFD_RELOC_64_PLT_PCREL
:
7024 case BFD_RELOC_PPC_VLE_REL8
:
7025 case BFD_RELOC_PPC_VLE_REL15
:
7026 case BFD_RELOC_PPC_VLE_REL24
:
7035 /* Use expr_symbol_where to see if this is an
7036 expression symbol. */
7037 if (expr_symbol_where (fixP
->fx_addsy
, &sfile
, &sline
))
7038 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
7039 _("unresolved expression that must"
7042 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
7043 _("cannot emit PC relative %s relocation"
7045 bfd_get_reloc_code_name (fixP
->fx_r_type
),
7046 S_GET_NAME (fixP
->fx_addsy
));
7049 as_bad_where (fixP
->fx_file
, fixP
->fx_line
,
7050 _("unable to resolve expression"));
7057 ppc_elf_validate_fix (fixP
, seg
);
7058 fixP
->fx_addnumber
= value
;
7060 /* PowerPC uses RELA relocs, ie. the reloc addend is stored separately
7061 from the section contents. If we are going to be emitting a reloc
7062 then the section contents are immaterial, so don't warn if they
7063 happen to overflow. Leave such warnings to ld. */
7066 fixP
->fx_no_overflow
= 1;
7068 /* Arrange to emit .TOC. as a normal symbol if used in anything
7069 but .TOC.@tocbase. */
7071 && fixP
->fx_r_type
!= BFD_RELOC_PPC64_TOC
7072 && fixP
->fx_addsy
!= NULL
7073 && strcmp (S_GET_NAME (fixP
->fx_addsy
), ".TOC.") == 0)
7074 symbol_get_bfdsym (fixP
->fx_addsy
)->flags
|= BSF_KEEP
;
7077 if (fixP
->fx_r_type
!= BFD_RELOC_PPC_TOC16
)
7078 fixP
->fx_addnumber
= 0;
7082 fixP
->fx_addnumber
= 0;
7084 /* We want to use the offset within the toc, not the actual VMA
7086 fixP
->fx_addnumber
=
7087 - bfd_get_section_vma (stdoutput
, S_GET_SEGMENT (fixP
->fx_addsy
))
7088 - S_GET_VALUE (ppc_toc_csect
);
7089 /* Set *valP to avoid errors. */
7096 /* Generate a reloc for a fixup. */
7099 tc_gen_reloc (asection
*seg ATTRIBUTE_UNUSED
, fixS
*fixp
)
7103 reloc
= (arelent
*) xmalloc (sizeof (arelent
));
7105 reloc
->sym_ptr_ptr
= (asymbol
**) xmalloc (sizeof (asymbol
*));
7106 *reloc
->sym_ptr_ptr
= symbol_get_bfdsym (fixp
->fx_addsy
);
7107 reloc
->address
= fixp
->fx_frag
->fr_address
+ fixp
->fx_where
;
7108 reloc
->howto
= bfd_reloc_type_lookup (stdoutput
, fixp
->fx_r_type
);
7109 if (reloc
->howto
== (reloc_howto_type
*) NULL
)
7111 as_bad_where (fixp
->fx_file
, fixp
->fx_line
,
7112 _("reloc %d not supported by object file format"),
7113 (int) fixp
->fx_r_type
);
7116 reloc
->addend
= fixp
->fx_addnumber
;
7122 ppc_cfi_frame_initial_instructions (void)
7124 cfi_add_CFA_def_cfa (1, 0);
7128 tc_ppc_regname_to_dw2regnum (char *regname
)
7130 unsigned int regnum
= -1;
7134 static struct { char *name
; int dw2regnum
; } regnames
[] =
7136 { "sp", 1 }, { "r.sp", 1 }, { "rtoc", 2 }, { "r.toc", 2 },
7137 { "mq", 64 }, { "lr", 65 }, { "ctr", 66 }, { "ap", 67 },
7138 { "cr", 70 }, { "xer", 76 }, { "vrsave", 109 }, { "vscr", 110 },
7139 { "spe_acc", 111 }, { "spefscr", 112 }
7142 for (i
= 0; i
< ARRAY_SIZE (regnames
); ++i
)
7143 if (strcmp (regnames
[i
].name
, regname
) == 0)
7144 return regnames
[i
].dw2regnum
;
7146 if (regname
[0] == 'r' || regname
[0] == 'f' || regname
[0] == 'v')
7148 p
= regname
+ 1 + (regname
[1] == '.');
7149 regnum
= strtoul (p
, &q
, 10);
7150 if (p
== q
|| *q
|| regnum
>= 32)
7152 if (regname
[0] == 'f')
7154 else if (regname
[0] == 'v')
7157 else if (regname
[0] == 'c' && regname
[1] == 'r')
7159 p
= regname
+ 2 + (regname
[2] == '.');
7160 if (p
[0] < '0' || p
[0] > '7' || p
[1])
7162 regnum
= p
[0] - '0' + 68;