diff options
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 17 | ||||
| -rw-r--r-- | gas/write.c | 177 |
2 files changed, 97 insertions, 97 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 557779b..17acb07 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,5 +1,22 @@ 2002-08-28 Alan Modra <amodra@bigpond.net.au> + * write.c (BFD_FAST_SECTION_FILL): Remove unused macro. + (TC_ADJUST_RELOC_COUNT): Tweak param name. + (TC_FORCE_RELOCATION, TC_FORCE_RELOCATION_SECTION): Likewise. + (TC_FIX_ADJUSTABLE, MD_PCREL_FROM_SECTION): Likewise. + (RELOC_ENUM): Define. + (fix_new_internal): Use RELOC_ENUM. + (fix_new, fix_new_exp): Likewise. + (adjust_reloc_syms): Comment. Remove unnecessary tests on sym != NULL. + Replace gotos with continue. + (write_relocs): Formatting. Avoid symbol loops in + RELOC_EXPANSION_POSSIBLE case too. Report bfd_reloc_outofrange + errors, and error number in other cases. + (fixup_segment): Remove param names from prototype. Rename + "this_segment_type" to "this_segment". Update linkrelax comment. + Remove "size, "place" and "where" local vars. Formatting. Update + "no symbol" comment. Remove #if 0 and #if 1. + * app.c (do_scrub_chars): Don't test IGNORE_NONSTANDARD_ESCAPES. Tidy. 2002-08-27 Alan Modra <amodra@bigpond.net.au> diff --git a/gas/write.c b/gas/write.c index 658765c..3f609d3 100644 --- a/gas/write.c +++ b/gas/write.c @@ -28,20 +28,16 @@ #include "output-file.h" #include "dwarf2dbg.h" -/* This looks like a good idea. Let's try turning it on always, for now. */ -#undef BFD_FAST_SECTION_FILL -#define BFD_FAST_SECTION_FILL - #ifndef TC_ADJUST_RELOC_COUNT -#define TC_ADJUST_RELOC_COUNT(FIXP,COUNT) +#define TC_ADJUST_RELOC_COUNT(FIX, COUNT) #endif #ifndef TC_FORCE_RELOCATION -#define TC_FORCE_RELOCATION(FIXP) 0 +#define TC_FORCE_RELOCATION(FIX) 0 #endif #ifndef TC_FORCE_RELOCATION_SECTION -#define TC_FORCE_RELOCATION_SECTION(FIXP,SEG) TC_FORCE_RELOCATION(FIXP) +#define TC_FORCE_RELOCATION_SECTION(FIX, SEG) TC_FORCE_RELOCATION (FIX) #endif #ifndef TC_LINKRELAX_FIXUP @@ -49,7 +45,7 @@ #endif #ifndef TC_FIX_ADJUSTABLE -#define TC_FIX_ADJUSTABLE(fix) 1 +#define TC_FIX_ADJUSTABLE(FIX) 1 #endif #ifndef TC_FINALIZE_SYMS_BEFORE_SIZE_SEG @@ -57,7 +53,7 @@ #endif #ifndef MD_PCREL_FROM_SECTION -#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from(FIXP) +#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from (FIX) #endif #ifndef WORKING_DOT_WORD @@ -109,18 +105,17 @@ int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE; static int n_fixups; #ifdef BFD_ASSEMBLER -static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, - symbolS *add, symbolS *sub, - offsetT offset, int pcrel, - bfd_reloc_code_real_type r_type)); +#define RELOC_ENUM enum bfd_reloc_code_real #else +#define RELOC_ENUM int +#endif + static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, symbolS *add, symbolS *sub, offsetT offset, int pcrel, - int r_type)); -#endif + RELOC_ENUM r_type)); #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) -static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type)); +static long fixup_segment PARAMS ((fixS *, segT)); #endif static relax_addressT relax_align PARAMS ((relax_addressT addr, int align)); #if defined (BFD_ASSEMBLER) || ! defined (BFD) @@ -158,11 +153,7 @@ fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, symbolS *sub_symbol; /* X_op_symbol. */ offsetT offset; /* X_add_number. */ int pcrel; /* TRUE if PC-relative relocation. */ -#ifdef BFD_ASSEMBLER - bfd_reloc_code_real_type r_type; /* Relocation type. */ -#else - int r_type; /* Relocation type. */ -#endif + RELOC_ENUM r_type ATTRIBUTE_UNUSED; /* Relocation type. */ { fixS *fixP; @@ -253,11 +244,7 @@ fix_new (frag, where, size, add_symbol, offset, pcrel, r_type) symbolS *add_symbol; /* X_add_symbol. */ offsetT offset; /* X_add_number. */ int pcrel; /* TRUE if PC-relative relocation. */ -#ifdef BFD_ASSEMBLER - bfd_reloc_code_real_type r_type; /* Relocation type. */ -#else - int r_type; /* Relocation type. */ -#endif + RELOC_ENUM r_type; /* Relocation type. */ { return fix_new_internal (frag, where, size, add_symbol, (symbolS *) NULL, offset, pcrel, r_type); @@ -274,11 +261,7 @@ fix_new_exp (frag, where, size, exp, pcrel, r_type) int size; /* 1, 2, or 4 usually. */ expressionS *exp; /* Expression. */ int pcrel; /* TRUE if PC-relative relocation. */ -#ifdef BFD_ASSEMBLER - bfd_reloc_code_real_type r_type; /* Relocation type. */ -#else - int r_type; /* Relocation type. */ -#endif + RELOC_ENUM r_type; /* Relocation type. */ { symbolS *add = NULL; symbolS *sub = NULL; @@ -735,6 +718,9 @@ dump_section_relocs (abfd, sec, stream_) #define EMIT_SECTION_SYMBOLS 1 #endif +/* This pass over fixups decides whether symbols can be replaced with + section symbols. */ + static void adjust_reloc_syms (abfd, sec, xxx) bfd *abfd ATTRIBUTE_UNUSED; @@ -769,29 +755,27 @@ adjust_reloc_syms (abfd, sec, xxx) point. It is possible to see unresolved expression symbols, though, since they are not in the regular symbol table. */ - if (sym != NULL) - resolve_symbol_value (sym); + resolve_symbol_value (sym); if (fixp->fx_subsy != NULL) resolve_symbol_value (fixp->fx_subsy); /* If this symbol is equated to an undefined symbol, convert the fixup to being against that symbol. */ - if (sym != NULL && symbol_equated_reloc_p (sym)) + if (symbol_equated_reloc_p (sym)) { fixp->fx_offset += symbol_get_value_expression (sym)->X_add_number; sym = symbol_get_value_expression (sym)->X_add_symbol; fixp->fx_addsy = sym; } - if (sym != NULL && symbol_mri_common_p (sym)) + if (symbol_mri_common_p (sym)) { /* These symbols are handled specially in fixup_segment. */ - goto done; + continue; } symsec = S_GET_SEGMENT (sym); - if (symsec == NULL) abort (); @@ -807,7 +791,7 @@ adjust_reloc_syms (abfd, sec, xxx) symbol_mark_used_in_reloc (fixp->fx_subsy); #endif } - goto done; + continue; } /* If it's one of these sections, assume the symbol is @@ -826,7 +810,7 @@ adjust_reloc_syms (abfd, sec, xxx) if (fixp->fx_subsy) symbol_mark_used_in_reloc (fixp->fx_subsy); #endif - goto done; + continue; } /* Don't try to reduce relocs which refer to non-local symbols @@ -859,7 +843,7 @@ adjust_reloc_syms (abfd, sec, xxx) if (fixp->fx_subsy != NULL) symbol_mark_used_in_reloc (fixp->fx_subsy); #endif - goto done; + continue; } } @@ -868,7 +852,7 @@ adjust_reloc_syms (abfd, sec, xxx) if (symbol_section_p (sym)) { symbol_mark_used_in_reloc (fixp->fx_addsy); - goto done; + continue; } #ifdef BFD_ASSEMBLER @@ -879,22 +863,22 @@ adjust_reloc_syms (abfd, sec, xxx) if (S_IS_WEAK (sym)) { symbol_mark_used_in_reloc (fixp->fx_addsy); - goto done; + continue; } /* Never adjust a reloc against local symbol in a merge section with non-zero addend. */ - if ((symsec->flags & SEC_MERGE) && fixp->fx_offset) + if ((symsec->flags & SEC_MERGE) != 0 && fixp->fx_offset != 0) { symbol_mark_used_in_reloc (fixp->fx_addsy); - goto done; + continue; } /* Never adjust a reloc against TLS local symbol. */ - if (symsec->flags & SEC_THREAD_LOCAL) + if ((symsec->flags & SEC_THREAD_LOCAL) != 0) { symbol_mark_used_in_reloc (fixp->fx_addsy); - goto done; + continue; } #endif @@ -904,7 +888,7 @@ adjust_reloc_syms (abfd, sec, xxx) if (! obj_fix_adjustable (fixp)) { symbol_mark_used_in_reloc (fixp->fx_addsy); - goto done; + continue; } #endif @@ -915,7 +899,7 @@ adjust_reloc_syms (abfd, sec, xxx) if (! tc_fix_adjustable (fixp)) { symbol_mark_used_in_reloc (fixp->fx_addsy); - goto done; + continue; } #endif @@ -933,24 +917,14 @@ adjust_reloc_syms (abfd, sec, xxx) fprintf (stderr, "\nadjusted fixup:\n"); print_fixup (fixp); #endif - - done: - ; } -#if 1 /* def RELOC_REQUIRES_SYMBOL */ else { /* There was no symbol required by this relocation. However, BFD doesn't really handle relocations without symbols well. - (At least, the COFF support doesn't.) So for now we fake up - a local symbol in the absolute section. */ - + So fake up a local symbol in the absolute section. */ fixp->fx_addsy = section_symbol (absolute_section); -#if 0 - fixp->fx_addsy->sy_used_in_reloc = 1; -#endif } -#endif dump_section_relocs (abfd, sec, stderr); } @@ -1038,10 +1012,12 @@ write_relocs (abfd, sec, xxx) case bfd_reloc_ok: break; case bfd_reloc_overflow: - as_bad_where (fixp->fx_file, fixp->fx_line, _("relocation overflow")); + as_bad_where (fixp->fx_file, fixp->fx_line, + _("relocation overflow")); break; case bfd_reloc_outofrange: - as_bad_where (fixp->fx_file, fixp->fx_line, _("relocation out of range")); + as_bad_where (fixp->fx_file, fixp->fx_line, + _("relocation out of range")); break; default: as_fatal (_("%s:%u: bad return from bfd_install_relocation: %x"), @@ -1074,7 +1050,17 @@ write_relocs (abfd, sec, xxx) rather than the former. */ sym = fixp->fx_addsy; while (symbol_equated_reloc_p (sym)) - sym = symbol_get_value_expression (sym)->X_add_symbol; + { + symbolS *n; + + /* We must avoid looping, as that can occur with a badly + written program. */ + n = symbol_get_value_expression (sym)->X_add_symbol; + if (n == sym) + break; + fixp->fx_offset += symbol_get_value_expression (sym)->X_add_number; + sym = n; + } fixp->fx_addsy = sym; reloc = tc_gen_reloc (sec, fixp); @@ -1103,9 +1089,13 @@ write_relocs (abfd, sec, xxx) as_bad_where (fixp->fx_file, fixp->fx_line, _("relocation overflow")); break; + case bfd_reloc_outofrange: + as_bad_where (fixp->fx_file, fixp->fx_line, + _("relocation out of range")); + break; default: - as_fatal (_("%s:%u: bad return from bfd_install_relocation"), - fixp->fx_file, fixp->fx_line); + as_fatal (_("%s:%u: bad return from bfd_install_relocation: %x"), + fixp->fx_file, fixp->fx_line, s); } } } @@ -2581,29 +2571,25 @@ relax_segment (segment_frag_root, segment) These will be output later by emit_relocations(). */ static long -fixup_segment (fixP, this_segment_type) - register fixS *fixP; - segT this_segment_type; /* N_TYPE bits for segment. */ +fixup_segment (fixP, this_segment) + fixS *fixP; + segT this_segment; { long seg_reloc_count = 0; symbolS *add_symbolP; symbolS *sub_symbolP; valueT add_number; - int size; - char *place; - long where; int pcrel, plt; fragS *fragP; segT add_symbol_segment = absolute_section; /* If the linker is doing the relaxing, we must not do any fixups. - Well, strictly speaking that's not true -- we could do any that are - PC-relative and don't cross regions that could change size. And for the - i960 (the only machine for which we've got a relaxing linker right now), - we might be able to turn callx/callj into bal anyways in cases where we - know the maximum displacement. */ - if (linkrelax && TC_LINKRELAX_FIXUP (this_segment_type)) + Well, strictly speaking that's not true -- we could do any that + are PC-relative and don't cross regions that could change size. + And for the i960 we might be able to turn callx/callj into bal + anyways in cases where we know the maximum displacement. */ + if (linkrelax && TC_LINKRELAX_FIXUP (this_segment)) { for (; fixP; fixP = fixP->fx_next) seg_reloc_count++; @@ -2620,12 +2606,9 @@ fixup_segment (fixP, this_segment_type) fragP = fixP->fx_frag; know (fragP); - where = fixP->fx_where; - place = fragP->fr_literal + where; - size = fixP->fx_size; add_symbolP = fixP->fx_addsy; #ifdef TC_VALIDATE_FIX - TC_VALIDATE_FIX (fixP, this_segment_type, skip); + TC_VALIDATE_FIX (fixP, this_segment, skip); #endif sub_symbolP = fixP->fx_subsy; add_number = fixP->fx_offset; @@ -2664,7 +2647,7 @@ fixup_segment (fixP, this_segment_type) fixP->fx_subsy = NULL; } else if (pcrel - && S_GET_SEGMENT (sub_symbolP) == this_segment_type) + && S_GET_SEGMENT (sub_symbolP) == this_segment) { /* Should try converting to a constant. */ goto bad_sub_reloc; @@ -2696,7 +2679,7 @@ fixup_segment (fixP, this_segment_type) && 0 #endif && pcrel) - add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); + add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment); add_symbolP = NULL; pcrel = 0; /* No further pcrel processing. */ @@ -2704,7 +2687,7 @@ fixup_segment (fixP, this_segment_type) /* Let the target machine make the final determination as to whether or not a relocation will be needed to handle this fixup. */ - if (!TC_FORCE_RELOCATION_SECTION (fixP, this_segment_type)) + if (!TC_FORCE_RELOCATION_SECTION (fixP, this_segment)) { fixP->fx_pcrel = 0; fixP->fx_addsy = NULL; @@ -2721,7 +2704,7 @@ fixup_segment (fixP, this_segment_type) add_number -= S_GET_VALUE (sub_symbolP); #ifdef DIFF_EXPR_OK - else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type) + else if (S_GET_SEGMENT (sub_symbolP) == this_segment) { /* Make it pc-relative. */ if (0 @@ -2735,7 +2718,7 @@ fixup_segment (fixP, this_segment_type) || !pcrel) { add_number += MD_PCREL_FROM_SECTION (fixP, - this_segment_type); + this_segment); pcrel = 1; fixP->fx_pcrel = 1; } @@ -2764,7 +2747,7 @@ fixup_segment (fixP, this_segment_type) else { char buf[50]; - sprint_value (buf, fragP->fr_address + where); + sprint_value (buf, fragP->fr_address + fixP->fx_where); as_bad_where (fixP->fx_file, fixP->fx_line, _("subtraction of two symbols in different sections `%s' {%s section} - `%s' {%s section} at file address %s"), S_GET_NAME (add_symbolP), @@ -2778,7 +2761,7 @@ fixup_segment (fixP, this_segment_type) if (add_symbolP) { - if (add_symbol_segment == this_segment_type && pcrel && !plt + if (add_symbol_segment == this_segment && pcrel && !plt && TC_RELOC_RTSYM_LOC_FIXUP (fixP)) { /* This fixup was made when the symbol's segment was @@ -2794,7 +2777,7 @@ fixup_segment (fixP, this_segment_type) #endif /* TC_I960 */ add_number += S_GET_VALUE (add_symbolP); - add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); + add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment); /* Lie. Don't want further pcrel processing. */ pcrel = 0; @@ -2868,7 +2851,7 @@ fixup_segment (fixP, this_segment_type) if (pcrel) { - add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); + add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment); if (add_symbolP == 0) { #ifndef BFD_ASSEMBLER @@ -2882,28 +2865,28 @@ fixup_segment (fixP, this_segment_type) } if (!fixP->fx_done) - md_apply_fix3 (fixP, & add_number, this_segment_type); + md_apply_fix3 (fixP, &add_number, this_segment); - if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && size > 0) + if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && fixP->fx_size != 0) { - if ((size_t) size < sizeof (valueT)) + if (fixP->fx_size < sizeof (valueT)) { valueT mask; mask = 0; mask--; /* Set all bits to one. */ - mask <<= size * 8 - (fixP->fx_signed ? 1 : 0); + mask <<= fixP->fx_size * 8 - (fixP->fx_signed ? 1 : 0); if ((add_number & mask) != 0 && (add_number & mask) != mask) { char buf[50], buf2[50]; - sprint_value (buf, fragP->fr_address + where); + sprint_value (buf, fragP->fr_address + fixP->fx_where); if (add_number > 1000) sprint_value (buf2, add_number); else sprintf (buf2, "%ld", (long) add_number); as_bad_where (fixP->fx_file, fixP->fx_line, _("value of %s too large for field of %d bytes at %s"), - buf2, size, buf); + buf2, fixP->fx_size, buf); } /* Generic error checking. */ } #ifdef WARN_SIGNED_OVERFLOW_WORD @@ -2911,12 +2894,12 @@ fixup_segment (fixP, this_segment_type) number. We already know it is not too negative. This is to catch over-large switches generated by gcc on the 68k. */ if (!flag_signed_overflow_ok - && size == 2 + && fixP->fx_size == 2 && add_number > 0x7fff) as_bad_where (fixP->fx_file, fixP->fx_line, _("signed .word overflow; switch may be too large; %ld at 0x%lx"), (long) add_number, - (unsigned long) (fragP->fr_address + where)); + (long) (fragP->fr_address + fixP->fx_where)); #endif } /* Not a bit fix. */ |