static unsigned int som_canonicalize_reloc PARAMS ((bfd *, sec_ptr,
arelent **, asymbol **));
static unsigned int som_get_reloc_upper_bound PARAMS ((bfd *, sec_ptr));
+static unsigned int som_set_reloc_info PARAMS ((unsigned char *, unsigned int,
+ arelent *, asection *,
+ asymbol **, boolean));
+static boolean som_slurp_reloc_table PARAMS ((bfd *, asection *,
+ asymbol **, boolean));
static unsigned int som_get_symtab PARAMS ((bfd *, asymbol **));
static asymbol * som_make_empty_symbol PARAMS ((bfd *));
static void som_print_symbol PARAMS ((bfd *, PTR,
static const reloc_howto_type * som_bfd_reloc_type_lookup
PARAMS ((bfd_arch_info_type *, bfd_reloc_code_real_type));
+/* About the relocation formatting table...
+
+ There are 256 entries in the table, one for each possible
+ relocation opcode available in SOM. We index the table by
+ the relocation opcode. The names and operations are those
+ defined by a.out_800 (4).
+
+ Right now this table is only used to count and perform minimal
+ processing on relocation streams so that they can be internalized
+ into BFD and symbolically printed by utilities. To make actual use
+ of them would be much more difficult, BFD's concept of relocations
+ is far too simple to handle SOM relocations. The basic assumption
+ that a relocation can be completely processed independent of other
+ relocations before an object file is written is invalid for SOM.
+
+ The SOM relocations are meant to be processed as a stream, they
+ specify copying of data from the input section to the output section
+ while possibly modifying the data in some manner. They also can
+ specify that a variable number of zeros or uninitialized data be
+ inserted on in the output segment at the current offset. Some
+ relocations specify that some previous relocation be re-applied at
+ the current location in the input/output sections. And finally a number
+ of relocations have effects on other sections (R_ENTRY, R_EXIT,
+ R_UNWIND_AUX and a variety of others). There isn't even enough room
+ in the BFD relocation data structure to store enough information to
+ perform all the relocations.
+
+ Each entry in the table has three fields.
+
+ The first entry is an index into this "class" of relocations. This
+ index can then be used as a variable within the relocation itself.
+
+ The second field is a format string which actually controls processing
+ of the relocation. It uses a simple postfix machine to do calculations
+ based on variables/constants found in the string and the relocation
+ stream.
+
+ The third field specifys whether or not this relocation may use
+ a constant (V) from the previous R_DATA_OVERRIDE rather than a constant
+ stored in the instruction.
+
+ Variables:
+
+ L = input space byte count
+ D = index into class of relocations
+ M = output space byte count
+ N = statement number (unused?)
+ O = stack operation
+ R = parameter relocation bits
+ S = symbol index
+ U = 64 bits of stack unwind and frame size info (we only keep 32 bits)
+ V = a literal constant (usually used in the next relocation)
+ P = a previous relocation
+
+ Lower case letters (starting with 'b') refer to following
+ bytes in the relocation stream. 'b' is the next 1 byte,
+ c is the next 2 bytes, d is the next 3 bytes, etc...
+ This is the variable part of the relocation entries that
+ makes our life a living hell.
+
+ numerical constants are also used in the format string. Note
+ the constants are represented in decimal.
+
+ '+', "*" and "=" represents the obvious postfix operators.
+ '<' represents a left shift.
+
+ Stack Operations:
+
+ Parameter Relocation Bits:
+
+ Unwind Entries:
+
+ Previous Relocations: The index field represents which in the queue
+ of 4 previous fixups should be re-applied.
+
+ Literal Constants: These are generally used to represent addend
+ parts of relocations when these constants are not stored in the
+ fields of the instructions themselves. For example the instruction
+ addil foo-$global$-0x1234 would use an override for "0x1234" rather
+ than storing it into the addil itself. */
+
+struct fixup_format
+{
+ int D;
+ char *format;
+};
+
+static const struct fixup_format som_fixup_formats[256] =
+{
+ /* R_NO_RELOCATION */
+ 0, "LD1+4*=", /* 0x00 */
+ 1, "LD1+4*=", /* 0x01 */
+ 2, "LD1+4*=", /* 0x02 */
+ 3, "LD1+4*=", /* 0x03 */
+ 4, "LD1+4*=", /* 0x04 */
+ 5, "LD1+4*=", /* 0x05 */
+ 6, "LD1+4*=", /* 0x06 */
+ 7, "LD1+4*=", /* 0x07 */
+ 8, "LD1+4*=", /* 0x08 */
+ 9, "LD1+4*=", /* 0x09 */
+ 10, "LD1+4*=", /* 0x0a */
+ 11, "LD1+4*=", /* 0x0b */
+ 12, "LD1+4*=", /* 0x0c */
+ 13, "LD1+4*=", /* 0x0d */
+ 14, "LD1+4*=", /* 0x0e */
+ 15, "LD1+4*=", /* 0x0f */
+ 16, "LD1+4*=", /* 0x10 */
+ 17, "LD1+4*=", /* 0x11 */
+ 18, "LD1+4*=", /* 0x12 */
+ 19, "LD1+4*=", /* 0x13 */
+ 20, "LD1+4*=", /* 0x14 */
+ 21, "LD1+4*=", /* 0x15 */
+ 22, "LD1+4*=", /* 0x16 */
+ 23, "LD1+4*=", /* 0x17 */
+ 0, "LD8<b+1+4*=", /* 0x18 */
+ 1, "LD8<b+1+4*=", /* 0x19 */
+ 2, "LD8<b+1+4*=", /* 0x1a */
+ 3, "LD8<b+1+4*=", /* 0x1b */
+ 0, "LD16<c+1+4*=", /* 0x1c */
+ 1, "LD16<c+1+4*=", /* 0x1d */
+ 2, "LD16<c+1+4*=", /* 0x1e */
+ 0, "Ld1+=", /* 0x1f */
+ /* R_ZEROES */
+ 0, "Lb1+4*=", /* 0x20 */
+ 1, "Ld1+=", /* 0x21 */
+ /* R_UNINIT */
+ 0, "Lb1+4*=", /* 0x22 */
+ 1, "Ld1+=", /* 0x23 */
+ /* R_RELOCATION */
+ 0, "L4=", /* 0x24 */
+ /* R_DATA_ONE_SYMBOL */
+ 0, "L4=Sb=", /* 0x25 */
+ 1, "L4=Sd=", /* 0x26 */
+ /* R_DATA_PLEBEL */
+ 0, "L4=Sb=", /* 0x27 */
+ 1, "L4=Sd=", /* 0x28 */
+ /* R_SPACE_REF */
+ 0, "L4=", /* 0x29 */
+ /* R_REPEATED_INIT */
+ 0, "L4=Mb1+4*=", /* 0x2a */
+ 1, "Lb4*=Mb1+L*=", /* 0x2b */
+ 2, "Lb4*=Md1+4*=", /* 0x2c */
+ 3, "Ld1+=Me1+=", /* 0x2d */
+ /* R_RESERVED */
+ 0, "", /* 0x2e */
+ 0, "", /* 0x2f */
+ /* R_PCREL_CALL */
+ 0, "L4=RD=Sb=", /* 0x30 */
+ 1, "L4=RD=Sb=", /* 0x31 */
+ 2, "L4=RD=Sb=", /* 0x32 */
+ 3, "L4=RD=Sb=", /* 0x33 */
+ 4, "L4=RD=Sb=", /* 0x34 */
+ 5, "L4=RD=Sb=", /* 0x35 */
+ 6, "L4=RD=Sb=", /* 0x36 */
+ 7, "L4=RD=Sb=", /* 0x37 */
+ 8, "L4=RD=Sb=", /* 0x38 */
+ 9, "L4=RD=Sb=", /* 0x39 */
+ 0, "L4=RD8<b+=Sb=",/* 0x3a */
+ 1, "L4=RD8<b+=Sb=",/* 0x3b */
+ 0, "L4=RD8<b+=Sd=",/* 0x3c */
+ 1, "L4=RD8<b+=Sd=",/* 0x3d */
+ /* R_RESERVED */
+ 0, "", /* 0x3e */
+ 0, "", /* 0x3f */
+ /* R_ABS_CALL */
+ 0, "L4=RD=Sb=", /* 0x40 */
+ 1, "L4=RD=Sb=", /* 0x41 */
+ 2, "L4=RD=Sb=", /* 0x42 */
+ 3, "L4=RD=Sb=", /* 0x43 */
+ 4, "L4=RD=Sb=", /* 0x44 */
+ 5, "L4=RD=Sb=", /* 0x45 */
+ 6, "L4=RD=Sb=", /* 0x46 */
+ 7, "L4=RD=Sb=", /* 0x47 */
+ 8, "L4=RD=Sb=", /* 0x48 */
+ 9, "L4=RD=Sb=", /* 0x49 */
+ 0, "L4=RD8<b+=Sb=",/* 0x4a */
+ 1, "L4=RD8<b+=Sb=",/* 0x4b */
+ 0, "L4=RD8<b+=Sd=",/* 0x4c */
+ 1, "L4=RD8<b+=Sd=",/* 0x4d */
+ /* R_RESERVED */
+ 0, "", /* 0x4e */
+ 0, "", /* 0x4f */
+ /* R_DP_RELATIVE */
+ 0, "L4=SD=", /* 0x50 */
+ 1, "L4=SD=", /* 0x51 */
+ 2, "L4=SD=", /* 0x52 */
+ 3, "L4=SD=", /* 0x53 */
+ 4, "L4=SD=", /* 0x54 */
+ 5, "L4=SD=", /* 0x55 */
+ 6, "L4=SD=", /* 0x56 */
+ 7, "L4=SD=", /* 0x57 */
+ 8, "L4=SD=", /* 0x58 */
+ 9, "L4=SD=", /* 0x59 */
+ 10, "L4=SD=", /* 0x5a */
+ 11, "L4=SD=", /* 0x5b */
+ 12, "L4=SD=", /* 0x5c */
+ 13, "L4=SD=", /* 0x5d */
+ 14, "L4=SD=", /* 0x5e */
+ 15, "L4=SD=", /* 0x5f */
+ 16, "L4=SD=", /* 0x60 */
+ 17, "L4=SD=", /* 0x61 */
+ 18, "L4=SD=", /* 0x62 */
+ 19, "L4=SD=", /* 0x63 */
+ 20, "L4=SD=", /* 0x64 */
+ 21, "L4=SD=", /* 0x65 */
+ 22, "L4=SD=", /* 0x66 */
+ 23, "L4=SD=", /* 0x67 */
+ 24, "L4=SD=", /* 0x68 */
+ 25, "L4=SD=", /* 0x69 */
+ 26, "L4=SD=", /* 0x6a */
+ 27, "L4=SD=", /* 0x6b */
+ 28, "L4=SD=", /* 0x6c */
+ 29, "L4=SD=", /* 0x6d */
+ 30, "L4=SD=", /* 0x6e */
+ 31, "L4=SD=", /* 0x6f */
+ 32, "L4=Sb=", /* 0x70 */
+ 33, "L4=Sd=", /* 0x71 */
+ /* R_RESERVED */
+ 0, "", /* 0x72 */
+ 0, "", /* 0x73 */
+ 0, "", /* 0x74 */
+ 0, "", /* 0x75 */
+ 0, "", /* 0x76 */
+ 0, "", /* 0x77 */
+ /* R_DLT_REL */
+ 0, "L4=Sb=", /* 0x78 */
+ 1, "L4=Sd=", /* 0x79 */
+ /* R_RESERVED */
+ 0, "", /* 0x7a */
+ 0, "", /* 0x7b */
+ 0, "", /* 0x7c */
+ 0, "", /* 0x7d */
+ 0, "", /* 0x7e */
+ 0, "", /* 0x7f */
+ /* R_CODE_ONE_SYMBOL */
+ 0, "L4=SD=", /* 0x80 */
+ 1, "L4=SD=", /* 0x81 */
+ 2, "L4=SD=", /* 0x82 */
+ 3, "L4=SD=", /* 0x83 */
+ 4, "L4=SD=", /* 0x84 */
+ 5, "L4=SD=", /* 0x85 */
+ 6, "L4=SD=", /* 0x86 */
+ 7, "L4=SD=", /* 0x87 */
+ 8, "L4=SD=", /* 0x88 */
+ 9, "L4=SD=", /* 0x89 */
+ 10, "L4=SD=", /* 0x8q */
+ 11, "L4=SD=", /* 0x8b */
+ 12, "L4=SD=", /* 0x8c */
+ 13, "L4=SD=", /* 0x8d */
+ 14, "L4=SD=", /* 0x8e */
+ 15, "L4=SD=", /* 0x8f */
+ 16, "L4=SD=", /* 0x90 */
+ 17, "L4=SD=", /* 0x91 */
+ 18, "L4=SD=", /* 0x92 */
+ 19, "L4=SD=", /* 0x93 */
+ 20, "L4=SD=", /* 0x94 */
+ 21, "L4=SD=", /* 0x95 */
+ 22, "L4=SD=", /* 0x96 */
+ 23, "L4=SD=", /* 0x97 */
+ 24, "L4=SD=", /* 0x98 */
+ 25, "L4=SD=", /* 0x99 */
+ 26, "L4=SD=", /* 0x9a */
+ 27, "L4=SD=", /* 0x9b */
+ 28, "L4=SD=", /* 0x9c */
+ 29, "L4=SD=", /* 0x9d */
+ 30, "L4=SD=", /* 0x9e */
+ 31, "L4=SD=", /* 0x9f */
+ 32, "L4=Sb=", /* 0xa0 */
+ 33, "L4=Sd=", /* 0xa1 */
+ /* R_RESERVED */
+ 0, "", /* 0xa2 */
+ 0, "", /* 0xa3 */
+ 0, "", /* 0xa4 */
+ 0, "", /* 0xa5 */
+ 0, "", /* 0xa6 */
+ 0, "", /* 0xa7 */
+ 0, "", /* 0xa8 */
+ 0, "", /* 0xa9 */
+ 0, "", /* 0xaa */
+ 0, "", /* 0xab */
+ 0, "", /* 0xac */
+ 0, "", /* 0xad */
+ /* R_MILLI_REL */
+ 0, "L4=Sb=", /* 0xae */
+ 1, "L4=Sd=", /* 0xaf */
+ /* R_CODE_PLABEL */
+ 0, "L4=Sb=", /* 0xb0 */
+ 1, "L4=Sd=", /* 0xb1 */
+ /* R_BREAKPOINT */
+ 0, "L4=", /* 0xb2 */
+ /* R_ENTRY */
+ 0, "Ui=", /* 0xb3 */
+ 1, "Uf=", /* 0xb4 */
+ /* R_ALT_ENTRY */
+ 0, "", /* 0xb5 */
+ /* R_EXIT */
+ 0, "", /* 0xb6 */
+ /* R_BEGIN_TRY */
+ 0, "", /* 0xb7 */
+ /* R_END_TRY */
+ 0, "R0=", /* 0xb8 */
+ 1, "Rb4*=", /* 0xb9 */
+ 2, "Rd4*=", /* 0xba */
+ /* R_BEGIN_BRTAB */
+ 0, "", /* 0xbb */
+ /* R_END_BRTAB */
+ 0, "", /* 0xbc */
+ /* R_STATEMENT */
+ 0, "Nb=", /* 0xbd */
+ 1, "Nc=", /* 0xbe */
+ 2, "Nd=", /* 0xbf */
+ /* R_DATA_EXPR */
+ 0, "L4=", /* 0xc0 */
+ /* R_CODE_EXPR */
+ 0, "L4=", /* 0xc1 */
+ /* R_FSEL */
+ 0, "", /* 0xc2 */
+ /* R_LSEL */
+ 0, "", /* 0xc3 */
+ /* R_RSEL */
+ 0, "", /* 0xc4 */
+ /* R_N_MODE */
+ 0, "", /* 0xc5 */
+ /* R_S_MODE */
+ 0, "", /* 0xc6 */
+ /* R_D_MODE */
+ 0, "", /* 0xc7 */
+ /* R_R_MODE */
+ 0, "", /* 0xc8 */
+ /* R_DATA_OVERRIDE */
+ 0, "V0=", /* 0xc9 */
+ 1, "Vb=", /* 0xca */
+ 2, "Vc=", /* 0xcb */
+ 3, "Vd=", /* 0xcc */
+ 4, "Ve=", /* 0xcd */
+ /* R_TRANSLATED */
+ 0, "", /* 0xce */
+ /* R_RESERVED */
+ 0, "", /* 0xcf */
+ /* R_COMP1 */
+ 0, "Ob=", /* 0xd0 */
+ /* R_COMP2 */
+ 0, "Ob=Sd=", /* 0xd1 */
+ /* R_COMP3 */
+ 0, "Ob=Ve=", /* 0xd2 */
+ /* R_PREV_FIXUP */
+ 0, "P", /* 0xd3 */
+ 1, "P", /* 0xd4 */
+ 2, "P", /* 0xd5 */
+ 3, "P", /* 0xd6 */
+ /* R_RESERVED */
+ 0, "", /* 0xd7 */
+ 0, "", /* 0xd8 */
+ 0, "", /* 0xd9 */
+ 0, "", /* 0xda */
+ 0, "", /* 0xdb */
+ 0, "", /* 0xdc */
+ 0, "", /* 0xdd */
+ 0, "", /* 0xde */
+ 0, "", /* 0xdf */
+ 0, "", /* 0xe0 */
+ 0, "", /* 0xe1 */
+ 0, "", /* 0xe2 */
+ 0, "", /* 0xe3 */
+ 0, "", /* 0xe4 */
+ 0, "", /* 0xe5 */
+ 0, "", /* 0xe6 */
+ 0, "", /* 0xe7 */
+ 0, "", /* 0xe8 */
+ 0, "", /* 0xe9 */
+ 0, "", /* 0xea */
+ 0, "", /* 0xeb */
+ 0, "", /* 0xec */
+ 0, "", /* 0xed */
+ 0, "", /* 0xee */
+ 0, "", /* 0xef */
+ 0, "", /* 0xf0 */
+ 0, "", /* 0xf1 */
+ 0, "", /* 0xf2 */
+ 0, "", /* 0xf3 */
+ 0, "", /* 0xf4 */
+ 0, "", /* 0xf5 */
+ 0, "", /* 0xf6 */
+ 0, "", /* 0xf7 */
+ 0, "", /* 0xf8 */
+ 0, "", /* 0xf9 */
+ 0, "", /* 0xfa */
+ 0, "", /* 0xfb */
+ 0, "", /* 0xfc */
+ 0, "", /* 0xfd */
+ 0, "", /* 0xfe */
+ 0, "", /* 0xff */
+};
+
+static const int comp1_opcodes[] =
+{
+ 0x00,
+ 0x40,
+ 0x41,
+ 0x42,
+ 0x43,
+ 0x44,
+ 0x45,
+ 0x46,
+ 0x47,
+ 0x48,
+ 0x49,
+ 0x4a,
+ 0x4b,
+ 0x60,
+ 0x80,
+ 0xa0,
+ 0xc0,
+ -1
+};
+
+static const int comp2_opcodes[] =
+{
+ 0x00,
+ 0x80,
+ 0x82,
+ 0xc0,
+ -1
+};
+
+static const int comp3_opcodes[] =
+{
+ 0x00,
+ 0x02,
+ -1
+};
+
static reloc_howto_type som_hppa_howto_table[] =
{
{R_NO_RELOCATION, 0, 0, 32, false, 0, 0, hppa_som_reloc, "R_NO_RELOCATION"},
struct header *file_hdrp;
struct som_exec_auxhdr *aux_hdrp;
{
- asection *text, *data, *bss;
-
/* som_mkobject will set bfd_error if som_mkobject fails. */
if (som_mkobject (abfd) != true)
return 0;
- /* Make the standard .text, .data, and .bss sections so that tools
- which assume those names work (size for example). They will have
- no contents, but the sizes and such will reflect those of the
- $CODE$, $DATA$, and $BSS$ subspaces respectively.
-
- FIXME: Should check return status from bfd_make_section calls below. */
-
- text = bfd_make_section (abfd, ".text");
- data = bfd_make_section (abfd, ".data");
- bss = bfd_make_section (abfd, ".bss");
-
- text->_raw_size = aux_hdrp->exec_tsize;
- data->_raw_size = aux_hdrp->exec_dsize;
- bss->_raw_size = aux_hdrp->exec_bsize;
-
- text->flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_CODE);
- data->flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS);
- bss->flags = (SEC_ALLOC | SEC_IS_COMMON);
-
- /* The virtual memory addresses of the sections */
- text->vma = aux_hdrp->exec_tmem;
- data->vma = aux_hdrp->exec_dmem;
- bss->vma = aux_hdrp->exec_bfill;
-
- /* The file offsets of the sections */
- text->filepos = aux_hdrp->exec_tfile;
- data->filepos = aux_hdrp->exec_dfile;
-
- /* The file offsets of the relocation info */
- text->rel_filepos = 0;
- data->rel_filepos = 0;
-
/* Set BFD flags based on what information is available in the SOM. */
abfd->flags = NO_FLAGS;
if (! file_hdrp->entry_offset)
if (subspace.dup_common || subspace.is_common)
subspace_asect->flags |= SEC_IS_COMMON;
- else
+ else if (subspace.subspace_length > 0)
subspace_asect->flags |= SEC_HAS_CONTENTS;
if (subspace.is_loadable)
subspace_asect->flags |= SEC_ALLOC | SEC_LOAD;
if (subspace.code_only)
subspace_asect->flags |= SEC_CODE;
+ /* Both file_loc_init_value and initialization_length will
+ be zero for a BSS like subspace. */
+ if (subspace.file_loc_init_value == 0
+ && subspace.initialization_length == 0)
+ subspace_asect->flags &= ~(SEC_DATA | SEC_LOAD);
+
/* This subspace has relocations.
The fixup_request_quantity is a byte count for the number of
entries in the relocation stream; it is not the actual number
subspace_asect->vma = subspace.subspace_start;
subspace_asect->_cooked_size = subspace.subspace_length;
- subspace_asect->_raw_size = subspace.initialization_length;
+ subspace_asect->_raw_size = subspace.subspace_length;
subspace_asect->alignment_power = log2 (subspace.alignment);
subspace_asect->filepos = subspace.file_loc_init_value;
}
switch (bufp->symbol_type)
{
case ST_ENTRY:
+ case ST_PRI_PROG:
+ case ST_SEC_PROG:
+ case ST_MILLICODE:
sym->symbol.flags |= BSF_FUNCTION;
sym->symbol.value &= ~0x3;
break;
- case ST_PRI_PROG:
- case ST_SEC_PROG:
case ST_STUB:
- case ST_MILLICODE:
case ST_CODE:
sym->symbol.value &= ~0x3;
}
/* Mark symbols left around by the debugger. */
- if (strlen (sym->symbol.name) >= 3
+ if (strlen (sym->symbol.name) >= 2
&& sym->symbol.name[0] == 'L'
- && (sym->symbol.name[2] == '$' || sym->symbol.name[3] == '$'))
+ && (sym->symbol.name[1] == '$' || sym->symbol.name[2] == '$'
+ || sym->symbol.name[3] == '$'))
sym->symbol.flags |= BSF_DEBUGGING;
/* Note increment at bottom of loop, since we skip some symbols
}
}
+/* Count or process variable-length SOM fixup records.
+
+ To avoid code duplication we use this code both to compute the number
+ of relocations requested by a stream, and to internalize the stream.
+
+ When computing the number of relocations requested by a stream the
+ variables rptr, section, and symbols have no meaning.
+
+ Return the number of relocations requested by the fixup stream. When
+ not just counting
+
+ This needs at least two or three more passes to get it cleaned up. */
+
+static unsigned int
+som_set_reloc_info (fixup, end, internal_relocs, section, symbols, just_count)
+ unsigned char *fixup;
+ unsigned int end;
+ arelent *internal_relocs;
+ asection *section;
+ asymbol **symbols;
+ boolean just_count;
+{
+ unsigned int op, varname;
+ unsigned char *end_fixups = &fixup[end];
+ const struct fixup_format *fp;
+ char *cp;
+ unsigned char *save_fixup;
+ int variables[26], stack[20], c, v, count, prev_fixup, *sp;
+ const int *subop;
+ arelent *rptr= internal_relocs;
+ unsigned int offset = just_count ? 0 : section->vma;
+
+#define var(c) variables[(c) - 'A']
+#define push(v) (*sp++ = (v))
+#define pop() (*--sp)
+#define emptystack() (sp == stack)
+
+ som_initialize_reloc_queue (reloc_queue);
+ bzero (variables, sizeof (variables));
+ bzero (stack, sizeof (stack));
+ count = 0;
+ prev_fixup = 0;
+ sp = stack;
+
+ while (fixup < end_fixups)
+ {
+
+ /* Save pointer to the start of this fixup. We'll use
+ it later to determine if it is necessary to put this fixup
+ on the queue. */
+ save_fixup = fixup;
+
+ /* Get the fixup code and its associated format. */
+ op = *fixup++;
+ fp = &som_fixup_formats[op];
+
+ /* Handle a request for a previous fixup. */
+ if (*fp->format == 'P')
+ {
+ /* Get pointer to the beginning of the prev fixup, move
+ the repeated fixup to the head of the queue. */
+ fixup = reloc_queue[fp->D].reloc;
+ som_reloc_queue_fix (reloc_queue, fp->D);
+ prev_fixup = 1;
+
+ /* Get the fixup code and its associated format. */
+ op = *fixup++;
+ fp = &som_fixup_formats[op];
+ }
+
+ /* If we are not just counting, set some reasonable defaults. */
+ if (! just_count)
+ {
+ rptr->address = offset;
+ rptr->howto = &som_hppa_howto_table[op];
+ rptr->addend = 0;
+ }
+
+ /* Set default input length to 0. Get the opcode class index
+ into D. */
+ var ('L') = 0;
+ var ('D') = fp->D;
+
+ /* Get the opcode format. */
+ cp = fp->format;
+
+ /* Process the format string. Parsing happens in two phases,
+ parse RHS, then assign to LHS. Repeat until no more
+ characters in the format string. */
+ while (*cp)
+ {
+ /* The variable this pass is going to compute a value for. */
+ varname = *cp++;
+
+ /* Start processing RHS. Continue until a NULL or '=' is found. */
+ do
+ {
+ c = *cp++;
+
+ /* If this is a variable, push it on the stack. */
+ if (isupper (c))
+ push (var (c));
+
+ /* If this is a lower case letter, then it represents
+ additional data from the fixup stream to be pushed onto
+ the stack. */
+ else if (islower (c))
+ {
+ for (v = 0; c > 'a'; --c)
+ v = (v << 8) | *fixup++;
+ push (v);
+ }
+
+ /* A decimal constant. Push it on the stack. */
+ else if (isdigit (c))
+ {
+ v = c - '0';
+ while (isdigit (*cp))
+ v = (v * 10) + (*cp++ - '0');
+ push (v);
+ }
+ else
+
+ /* An operator. Pop two two values from the stack and
+ use them as operands to the given operation. Push
+ the result of the operation back on the stack. */
+ switch (c)
+ {
+ case '+':
+ v = pop ();
+ v += pop ();
+ push (v);
+ break;
+ case '*':
+ v = pop ();
+ v *= pop ();
+ push (v);
+ break;
+ case '<':
+ v = pop ();
+ v = pop () << v;
+ push (v);
+ break;
+ default:
+ abort ();
+ }
+ }
+ while (*cp && *cp != '=');
+
+ /* Move over the equal operator. */
+ cp++;
+
+ /* Pop the RHS off the stack. */
+ c = pop ();
+
+ /* Perform the assignment. */
+ var (varname) = c;
+
+ /* Handle side effects. and special 'O' stack cases. */
+ switch (varname)
+ {
+ /* Consume some bytes from the input space. */
+ case 'L':
+ offset += c;
+ break;
+ /* A symbol to use in the relocation. Make a note
+ of this if we are not just counting. */
+ case 'S':
+ if (! just_count)
+ rptr->sym_ptr_ptr = &symbols[c];
+ break;
+ /* Handle the linker expression stack. */
+ case 'O':
+ switch (op)
+ {
+ case R_COMP1:
+ subop = comp1_opcodes;
+ break;
+ case R_COMP2:
+ subop = comp2_opcodes;
+ break;
+ case R_COMP3:
+ subop = comp3_opcodes;
+ break;
+ default:
+ abort ();
+ }
+ while (*subop <= (unsigned char) c)
+ ++subop;
+ --subop;
+ break;
+ default:
+ break;
+ }
+ }
+
+ /* If we used a previous fixup, clean up after it. */
+ if (prev_fixup)
+ {
+ fixup = save_fixup + 1;
+ prev_fixup = 0;
+ }
+ /* Queue it. */
+ else if (fixup > save_fixup + 1)
+ som_reloc_queue_insert (save_fixup, fixup - save_fixup, reloc_queue);
+
+ /* We do not pass R_DATA_OVERRIDE or R_NO_RELOCATION
+ fixups to BFD. */
+ if (som_hppa_howto_table[op].type != R_DATA_OVERRIDE
+ && som_hppa_howto_table[op].type != R_NO_RELOCATION)
+ {
+ /* Done with a single reloction. Loop back to the top. */
+ if (! just_count)
+ {
+ rptr->addend = var ('V');
+ rptr++;
+ }
+ count++;
+ /* Now that we've handled a "full" relocation, reset
+ some state. */
+ bzero (variables, sizeof (variables));
+ bzero (stack, sizeof (stack));
+ }
+ }
+ return count;
+
+#undef var
+#undef push
+#undef pop
+#undef emptystack
+}
+
+/* Read in the relocs (aka fixups in SOM terms) for a section.
+
+ som_get_reloc_upper_bound calls this routine with JUST_COUNT
+ set to true to indicate it only needs a count of the number
+ of actual relocations. */
+
+static boolean
+som_slurp_reloc_table (abfd, section, symbols, just_count)
+ bfd *abfd;
+ asection *section;
+ asymbol **symbols;
+ boolean just_count;
+{
+ char *external_relocs;
+ unsigned int fixup_stream_size;
+ arelent *internal_relocs;
+ unsigned int num_relocs;
+
+ fixup_stream_size = som_section_data (section)->reloc_size;
+ /* If there were no relocations, then there is nothing to do. */
+ if (section->reloc_count == 0)
+ return true;
+
+ /* If reloc_count is -1, then the relocation stream has not been
+ parsed. We must do so now to know how many relocations exist. */
+ if (section->reloc_count == -1)
+ {
+ external_relocs = (char *) bfd_zalloc (abfd, fixup_stream_size);
+ if (external_relocs == (char *) NULL)
+ {
+ bfd_error = no_memory;
+ return false;
+ }
+ /* Read in the external forms. */
+ if (bfd_seek (abfd,
+ obj_som_reloc_filepos (abfd) + section->rel_filepos,
+ SEEK_SET)
+ != 0)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ if (bfd_read (external_relocs, 1, fixup_stream_size, abfd)
+ != fixup_stream_size)
+ {
+ bfd_error = system_call_error;
+ return false;
+ }
+ /* Let callers know how many relocations found.
+ also save the relocation stream as we will
+ need it again. */
+ section->reloc_count = som_set_reloc_info (external_relocs,
+ fixup_stream_size,
+ NULL, NULL, NULL, true);
+
+ som_section_data (section)->reloc_stream = external_relocs;
+ }
+
+ /* If the caller only wanted a count, then return now. */
+ if (just_count)
+ return true;
+
+ num_relocs = section->reloc_count;
+ external_relocs = som_section_data (section)->reloc_stream;
+ /* Return saved information about the relocations if it is available. */
+ if (section->relocation != (arelent *) NULL)
+ return true;
+
+ internal_relocs = (arelent *) bfd_zalloc (abfd,
+ num_relocs * sizeof (arelent));
+ if (internal_relocs == (arelent *) NULL)
+ {
+ bfd_error = no_memory;
+ return false;
+ }
+
+ /* Process and internalize the relocations. */
+ som_set_reloc_info (external_relocs, fixup_stream_size,
+ internal_relocs, section, symbols, false);
+
+ /* Save our results and return success. */
+ section->relocation = internal_relocs;
+ return (true);
+}
+
+/* Return the number of bytes required to store the relocation
+ information associated with the given section. */
+
static unsigned int
som_get_reloc_upper_bound (abfd, asect)
bfd *abfd;
sec_ptr asect;
{
- fprintf (stderr, "som_get_reloc_upper_bound unimplemented\n");
- fflush (stderr);
- abort ();
- return (0);
+ /* If section has relocations, then read in the relocation stream
+ and parse it to determine how many relocations exist. */
+ if (asect->flags & SEC_RELOC)
+ {
+ if (som_slurp_reloc_table (abfd, asect, NULL, true))
+ return (asect->reloc_count + 1) * sizeof (arelent);
+ }
+ /* Either there are no relocations or an error occurred while
+ reading and parsing the relocation stream. */
+ return 0;
}
+/* Convert relocations from SOM (external) form into BFD internal
+ form. Return the number of relocations. */
+
static unsigned int
som_canonicalize_reloc (abfd, section, relptr, symbols)
bfd *abfd;
arelent **relptr;
asymbol **symbols;
{
- fprintf (stderr, "som_canonicalize_reloc unimplemented\n");
- fflush (stderr);
- abort ();
+ arelent *tblptr;
+ int count;
+
+ if (som_slurp_reloc_table (abfd, section, symbols, false) == false)
+ return 0;
+
+ count = section->reloc_count;
+ tblptr = section->relocation;
+ if (tblptr == (arelent *) NULL)
+ return 0;
+
+ while (count--)
+ *relptr++ = tblptr++;
+
+ *relptr = (arelent *) NULL;
+ return section->reloc_count;
}
extern bfd_target som_vec;
projects / deliverable / binutils-gdb.git / commitdiff
