X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gas%2Fwrite.c;h=e9e4f8a7e249b094648217b1465a36ea539a6d42;hb=6c1439be2121d3d9140b458194e3c0fd1618a9b0;hp=253999068273b065908083c73c69cbd219388771;hpb=305a3af6e39da4cc700dbe1649e374e4178dad49;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/write.c b/gas/write.c index 2539990682..e9e4f8a7e2 100644 --- a/gas/write.c +++ b/gas/write.c @@ -1,5 +1,5 @@ /* write.c - emit .o file - Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 1995 + Copyright (C) 1986, 87, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000 Free Software Foundation, Inc. This file is part of GAS, the GNU Assembler. @@ -15,10 +15,11 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with GAS; see the file COPYING. If not, write to - the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + along with GAS; see the file COPYING. If not, write to the Free + Software Foundation, 59 Temple Place - Suite 330, Boston, MA + 02111-1307, USA. */ -/* This thing should be set up to do byteordering correctly. But... */ +/* This thing should be set up to do byteordering correctly. But... */ #include "as.h" #include "subsegs.h" @@ -43,6 +44,14 @@ #define TC_FORCE_RELOCATION(FIXP) 0 #endif +#ifndef TC_FORCE_RELOCATION_SECTION +#define TC_FORCE_RELOCATION_SECTION(FIXP,SEG) TC_FORCE_RELOCATION(FIXP) +#endif + +#ifndef MD_PCREL_FROM_SECTION +#define MD_PCREL_FROM_SECTION(FIXP, SEC) md_pcrel_from(FIXP) +#endif + #ifndef WORKING_DOT_WORD extern CONST int md_short_jump_size; extern CONST int md_long_jump_size; @@ -68,9 +77,9 @@ struct frag *text_frag_root; struct frag *data_frag_root; struct frag *bss_frag_root; -struct frag *text_last_frag; /* Last frag in segment. */ -struct frag *data_last_frag; /* Last frag in segment. */ -static struct frag *bss_last_frag; /* Last frag in segment. */ +struct frag *text_last_frag; /* Last frag in segment. */ +struct frag *data_last_frag; /* Last frag in segment. */ +static struct frag *bss_last_frag; /* Last frag in segment. */ #endif #ifndef BFD @@ -78,13 +87,15 @@ static object_headers headers; #endif long string_byte_count; -char *next_object_file_charP; /* Tracks object file bytes. */ +char *next_object_file_charP; /* Tracks object file bytes. */ #ifndef OBJ_VMS int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE; #endif -#endif /* BFD_ASSEMBLER */ +#endif /* BFD_ASSEMBLER */ + +static int n_fixups; #ifdef BFD_ASSEMBLER static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, @@ -101,35 +112,63 @@ static fixS *fix_new_internal PARAMS ((fragS *, int where, int size, static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type)); #endif static relax_addressT relax_align PARAMS ((relax_addressT addr, int align)); +#if defined (BFD_ASSEMBLER) || ! defined (BFD) +static fragS *chain_frchains_together_1 PARAMS ((segT, struct frchain *)); +#endif +#ifdef BFD_ASSEMBLER +static void chain_frchains_together PARAMS ((bfd *, segT, PTR)); +static void cvt_frag_to_fill PARAMS ((segT, fragS *)); +static void relax_and_size_seg PARAMS ((bfd *, asection *, PTR)); +static void adjust_reloc_syms PARAMS ((bfd *, asection *, PTR)); +static void write_relocs PARAMS ((bfd *, asection *, PTR)); +static void write_contents PARAMS ((bfd *, asection *, PTR)); +static void set_symtab PARAMS ((void)); +#endif +#if defined (BFD_ASSEMBLER) || (! defined (BFD) && ! defined (OBJ_AOUT)) +static void merge_data_into_text PARAMS ((void)); +#endif +#if ! defined (BFD_ASSEMBLER) && ! defined (BFD) +static void cvt_frag_to_fill PARAMS ((object_headers *, segT, fragS *)); +static void remove_subsegs PARAMS ((frchainS *, int, fragS **, fragS **)); +static void relax_and_size_all_segments PARAMS ((void)); +#endif +#if defined (BFD_ASSEMBLER) && defined (OBJ_COFF) && defined (TE_GO32) +static void set_segment_vma PARAMS ((bfd *, asection *, PTR)); +#endif + +/* Create a fixS in obstack 'notes'. */ -/* - * fix_new() - * - * Create a fixS in obstack 'notes'. - */ static fixS * fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, r_type) - fragS *frag; /* Which frag? */ - int where; /* Where in that frag? */ - int size; /* 1, 2, or 4 usually. */ - symbolS *add_symbol; /* X_add_symbol. */ - symbolS *sub_symbol; /* X_op_symbol. */ - offsetT offset; /* X_add_number. */ - int pcrel; /* TRUE if PC-relative relocation. */ + fragS *frag; /* Which frag? */ + int where; /* Where in that frag? */ + int size; /* 1, 2, or 4 usually. */ + symbolS *add_symbol; /* X_add_symbol. */ + 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 */ + bfd_reloc_code_real_type r_type; /* Relocation type. */ #else - int r_type; /* Relocation type */ + int r_type; /* Relocation type. */ #endif { fixS *fixP; + n_fixups++; + fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS)); fixP->fx_frag = frag; fixP->fx_where = where; fixP->fx_size = size; + /* We've made fx_size a narrow field; check that it's wide enough. */ + if (fixP->fx_size != size) + { + as_bad (_("field fx_size too small to hold %d"), size); + abort (); + } fixP->fx_addsy = add_symbol; fixP->fx_subsy = sub_symbol; fixP->fx_offset = offset; @@ -142,12 +181,18 @@ fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, fixP->fx_pcrel_adjust = 0; fixP->fx_bit_fixP = 0; fixP->fx_addnumber = 0; - fixP->tc_fix_data = NULL; fixP->fx_tcbit = 0; fixP->fx_done = 0; + fixP->fx_no_overflow = 0; + fixP->fx_signed = 0; + +#ifdef USING_CGEN + fixP->fx_cgen.insn = NULL; + fixP->fx_cgen.opinfo = 0; +#endif -#if defined (TC_I960) || defined (TC_NS32K) - fixP->fx_bsr = 0; +#ifdef TC_FIX_TYPE + TC_INIT_FIX_DATA (fixP); #endif as_where (&fixP->fx_file, &fixP->fx_line); @@ -155,8 +200,7 @@ fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, /* Usually, we want relocs sorted numerically, but while comparing to older versions of gas that have relocs reverse sorted, it is convenient to have this compile - time option. xoxorich. */ - + time option. xoxorich. */ { #ifdef BFD_ASSEMBLER @@ -173,7 +217,7 @@ fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, fixP->fx_next = *seg_fix_rootP; *seg_fix_rootP = fixP; -#else /* REVERSE_SORT_RELOCS */ +#else /* REVERSE_SORT_RELOCS */ fixP->fx_next = NULL; @@ -183,8 +227,7 @@ fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, *seg_fix_rootP = fixP; *seg_fix_tailP = fixP; -#endif /* REVERSE_SORT_RELOCS */ - +#endif /* REVERSE_SORT_RELOCS */ } return fixP; @@ -194,16 +237,16 @@ fix_new_internal (frag, where, size, add_symbol, sub_symbol, offset, pcrel, fixS * fix_new (frag, where, size, add_symbol, offset, pcrel, r_type) - fragS *frag; /* Which frag? */ - int where; /* Where in that frag? */ - int size; /* 1, 2, or 4 usually. */ - symbolS *add_symbol; /* X_add_symbol. */ - offsetT offset; /* X_add_number. */ - int pcrel; /* TRUE if PC-relative relocation. */ + fragS *frag; /* Which frag? */ + int where; /* Where in that frag? */ + int size; /* 1, 2, or 4 usually. */ + 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 */ + bfd_reloc_code_real_type r_type; /* Relocation type. */ #else - int r_type; /* Relocation type */ + int r_type; /* Relocation type. */ #endif { return fix_new_internal (frag, where, size, add_symbol, @@ -216,21 +259,21 @@ fix_new (frag, where, size, add_symbol, offset, pcrel, r_type) fixS * fix_new_exp (frag, where, size, exp, pcrel, r_type) - fragS *frag; /* Which frag? */ - int where; /* Where in that frag? */ - int size; /* 1, 2, or 4 usually. */ + fragS *frag; /* Which frag? */ + int where; /* Where in that frag? */ + int size; /* 1, 2, or 4 usually. */ expressionS *exp; /* Expression. */ - int pcrel; /* TRUE if PC-relative relocation. */ + int pcrel; /* TRUE if PC-relative relocation. */ #ifdef BFD_ASSEMBLER - bfd_reloc_code_real_type r_type; /* Relocation type */ + bfd_reloc_code_real_type r_type; /* Relocation type. */ #else - int r_type; /* Relocation type */ + int r_type; /* Relocation type. */ #endif { symbolS *add = NULL; symbolS *sub = NULL; offsetT off = 0; - + switch (exp->X_op) { case O_absent: @@ -240,15 +283,31 @@ fix_new_exp (frag, where, size, exp, pcrel, r_type) /* This comes up when _GLOBAL_OFFSET_TABLE_+(.-L0) is read, if the difference expression cannot immediately be reduced. */ { - extern symbolS *make_expr_symbol (); symbolS *stmp = make_expr_symbol (exp); + exp->X_op = O_symbol; exp->X_op_symbol = 0; exp->X_add_symbol = stmp; exp->X_add_number = 0; + return fix_new_exp (frag, where, size, exp, pcrel, r_type); } + case O_symbol_rva: + add = exp->X_add_symbol; + off = exp->X_add_number; + +#if defined(BFD_ASSEMBLER) + r_type = BFD_RELOC_RVA; +#else +#if defined(TC_RVA_RELOC) + r_type = TC_RVA_RELOC; +#else + as_fatal (_("rva not supported")); +#endif +#endif + break; + case O_uminus: sub = exp->X_add_symbol; off = exp->X_add_number; @@ -259,17 +318,17 @@ fix_new_exp (frag, where, size, exp, pcrel, r_type) /* Fall through. */ case O_symbol: add = exp->X_add_symbol; - /* Fall through. */ + /* Fall through. */ case O_constant: off = exp->X_add_number; break; - + default: - as_bad ("expression too complex for fixup"); + add = make_expr_symbol (exp); + break; } - return fix_new_internal (frag, where, size, add, sub, off, - pcrel, r_type); + return fix_new_internal (frag, where, size, add, sub, off, pcrel, r_type); } /* Append a string onto another string, bumping the pointer along. */ @@ -279,7 +338,7 @@ append (charPP, fromP, length) char *fromP; unsigned long length; { - /* Don't trust memcpy() of 0 chars. */ + /* Don't trust memcpy() of 0 chars. */ if (length == 0) return; @@ -287,19 +346,18 @@ append (charPP, fromP, length) *charPP += length; } -#ifndef BFD_ASSEMBLER +#ifndef BFD_ASSEMBLER int section_alignment[SEG_MAXIMUM_ORDINAL]; #endif -/* - * This routine records the largest alignment seen for each segment. - * If the beginning of the segment is aligned on the worst-case - * boundary, all of the other alignments within it will work. At - * least one object format really uses this info. - */ -void +/* This routine records the largest alignment seen for each segment. + If the beginning of the segment is aligned on the worst-case + boundary, all of the other alignments within it will work. At + least one object format really uses this info. */ + +void record_alignment (seg, align) - /* Segment to which alignment pertains */ + /* Segment to which alignment pertains. */ segT seg; /* Alignment, as a power of 2 (e.g., 1 => 2-byte boundary, 2 => 4-byte boundary, etc.) */ @@ -308,7 +366,7 @@ record_alignment (seg, align) if (seg == absolute_section) return; #ifdef BFD_ASSEMBLER - if (align > bfd_get_section_alignment (stdoutput, seg)) + if ((unsigned int) align > bfd_get_section_alignment (stdoutput, seg)) bfd_set_section_alignment (stdoutput, seg, align); #else if (align > section_alignment[(int) seg]) @@ -322,7 +380,7 @@ record_alignment (seg, align) static void renumber_sections (abfd, sec, countparg) - bfd *abfd; + bfd *abfd ATTRIBUTE_UNUSED; asection *sec; PTR countparg; { @@ -332,7 +390,7 @@ renumber_sections (abfd, sec, countparg) ++*countp; } -#endif /* defined (BFD_ASSEMBLER) */ +#endif /* defined (BFD_ASSEMBLER) */ #if defined (BFD_ASSEMBLER) || ! defined (BFD) @@ -350,6 +408,7 @@ chain_frchains_together_1 (section, frchp) { prev_frag->fr_next = frchp->frch_root; prev_frag = frchp->frch_last; + assert (prev_frag->fr_type != 0); #ifdef BFD_ASSEMBLER if (frchp->fix_root != (fixS *) NULL) { @@ -361,6 +420,7 @@ chain_frchains_together_1 (section, frchp) } #endif } + assert (prev_frag->fr_type != 0); prev_frag->fr_next = 0; return prev_frag; } @@ -371,9 +431,9 @@ chain_frchains_together_1 (section, frchp) static void chain_frchains_together (abfd, section, xxx) - bfd *abfd; /* unused */ + bfd *abfd ATTRIBUTE_UNUSED; segT section; - PTR xxx; /* unused */ + PTR xxx ATTRIBUTE_UNUSED; { segment_info_type *info; @@ -381,8 +441,8 @@ chain_frchains_together (abfd, section, xxx) subseg_new, so it is possible that seg_info is NULL. */ info = seg_info (section); if (info != (segment_info_type *) NULL) - info->frchainP->frch_last - = chain_frchains_together_1 (section, info->frchainP); + info->frchainP->frch_last + = chain_frchains_together_1 (section, info->frchainP); /* Now that we've chained the frags together, we must add new fixups to the segment, not to the frag chain. */ @@ -393,7 +453,7 @@ chain_frchains_together (abfd, section, xxx) #if !defined (BFD) && !defined (BFD_ASSEMBLER) -void +static void remove_subsegs (head, seg, root, last) frchainS *head; int seg; @@ -404,14 +464,14 @@ remove_subsegs (head, seg, root, last) *last = chain_frchains_together_1 (seg, head); } -#endif /* BFD */ +#endif /* BFD */ #if defined (BFD_ASSEMBLER) || !defined (BFD) #ifdef BFD_ASSEMBLER static void cvt_frag_to_fill (sec, fragP) - segT sec; + segT sec ATTRIBUTE_UNUSED; fragS *fragP; #else static void @@ -436,8 +496,9 @@ cvt_frag_to_fill (headersP, sec, fragP) - fragP->fr_fix) / fragP->fr_var; if (fragP->fr_offset < 0) { - as_bad ("attempt to .org/.space backwards? (%ld)", - (long) fragP->fr_offset); + as_bad_where (fragP->fr_file, fragP->fr_line, + _("attempt to .org/.space backwards? (%ld)"), + (long) fragP->fr_offset); } fragP->fr_type = rs_fill; break; @@ -445,6 +506,26 @@ cvt_frag_to_fill (headersP, sec, fragP) case rs_fill: break; + case rs_leb128: + { + valueT value = S_GET_VALUE (fragP->fr_symbol); + int size; + + size = output_leb128 (fragP->fr_literal + fragP->fr_fix, value, + fragP->fr_subtype); + + fragP->fr_fix += size; + fragP->fr_type = rs_fill; + fragP->fr_var = 0; + fragP->fr_offset = 0; + fragP->fr_symbol = NULL; + } + break; + + case rs_cfa: + eh_frame_convert_frag (fragP); + break; + case rs_machine_dependent: #ifdef BFD_ASSEMBLER md_convert_frag (stdoutput, sec, fragP); @@ -452,13 +533,13 @@ cvt_frag_to_fill (headersP, sec, fragP) md_convert_frag (headersP, sec, fragP); #endif - assert (fragP->fr_next == NULL || (fragP->fr_next->fr_address - fragP->fr_address == fragP->fr_fix)); + assert (fragP->fr_next == NULL + || ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address) + == fragP->fr_fix)); - /* - * After md_convert_frag, we make the frag into a ".space 0". - * Md_convert_frag() should set up any fixSs and constants - * required. - */ + /* After md_convert_frag, we make the frag into a ".space 0". + md_convert_frag() should set up any fixSs and constants + required. */ frag_wane (fragP); break; @@ -487,14 +568,14 @@ cvt_frag_to_fill (headersP, sec, fragP) } } -#endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ +#endif /* defined (BFD_ASSEMBLER) || !defined (BFD) */ #ifdef BFD_ASSEMBLER static void relax_and_size_seg (abfd, sec, xxx) bfd *abfd; asection *sec; - PTR xxx; + PTR xxx ATTRIBUTE_UNUSED; { flagword flags; fragS *fragp; @@ -502,6 +583,8 @@ relax_and_size_seg (abfd, sec, xxx) int x; valueT size, newsize; + subseg_change (sec, 0); + flags = bfd_get_section_flags (abfd, sec); seginfo = seg_info (sec); @@ -513,7 +596,8 @@ relax_and_size_seg (abfd, sec, xxx) for (fragp = seginfo->frchainP->frch_root; fragp->fr_next; fragp = fragp->fr_next) - /* walk to last elt */; + /* Walk to last elt. */ + ; size = fragp->fr_address + fragp->fr_fix; } else @@ -558,7 +642,7 @@ relax_and_size_seg (abfd, sec, xxx) #ifdef DEBUG2 static void dump_section_relocs (abfd, sec, stream_) - bfd *abfd; + bfd *abfd ATTRIBUTE_UNUSED; asection *sec; char *stream_; { @@ -573,27 +657,21 @@ dump_section_relocs (abfd, sec, stream_) while (fixp) { symbolS *s = fixp->fx_addsy; - if (s) + + fprintf (stream, " %08lx: type %d ", (unsigned long) fixp, + (int) fixp->fx_r_type); + if (s == NULL) + fprintf (stream, "no sym\n"); + else { - fprintf (stream, " %08x: %s(%s", fixp, S_GET_NAME (s), - s->bsym->section->name); - if (s->bsym->flags & BSF_SECTION_SYM) - { - fprintf (stream, " section sym"); - if (S_GET_VALUE (s)) - fprintf (stream, "+%x", S_GET_VALUE (s)); - } - else - fprintf (stream, "+%x", S_GET_VALUE (s)); - fprintf (stream, ")+%x\n", fixp->fx_offset); + print_symbol_value_1 (stream, s); + fprintf (stream, "\n"); } - else - fprintf (stream, " %08x: type %d no sym\n", fixp, fixp->fx_r_type); fixp = fixp->fx_next; } } #else -#define dump_section_relocs(ABFD,SEC,STREAM) (void)(ABFD,SEC,STREAM) +#define dump_section_relocs(ABFD,SEC,STREAM) ((void) 0) #endif #ifndef EMIT_SECTION_SYMBOLS @@ -602,9 +680,9 @@ dump_section_relocs (abfd, sec, stream_) static void adjust_reloc_syms (abfd, sec, xxx) - bfd *abfd; + bfd *abfd ATTRIBUTE_UNUSED; asection *sec; - PTR xxx; + PTR xxx ATTRIBUTE_UNUSED; { segment_info_type *seginfo = seg_info (sec); fixS *fixp; @@ -616,109 +694,179 @@ adjust_reloc_syms (abfd, sec, xxx) for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) if (fixp->fx_done) - /* ignore it */; + /* Ignore it. */ + ; else if (fixp->fx_addsy) { symbolS *sym; asection *symsec; - reduce_fixup: - #ifdef DEBUG5 fprintf (stderr, "\n\nadjusting fixup:\n"); print_fixup (fixp); #endif sym = fixp->fx_addsy; - symsec = sym->bsym->section; - if (sym != NULL && sym->sy_mri_common) + /* All symbols should have already been resolved at this + 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, 1); + + if (fixp->fx_subsy != NULL) + resolve_symbol_value (fixp->fx_subsy, 1); + + /* If this symbol is equated to an undefined symbol, convert + the fixup to being against that symbol. */ + if (sym != NULL && symbol_equated_p (sym) + && (! S_IS_DEFINED (sym) || S_IS_COMMON (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)) { /* These symbols are handled specially in fixup_segment. */ goto done; } + symsec = S_GET_SEGMENT (sym); + + if (symsec == NULL) + abort (); + + if (bfd_is_abs_section (symsec)) + { + /* The fixup_segment routine will not use this symbol in a + relocation unless TC_FORCE_RELOCATION returns 1. */ + if (TC_FORCE_RELOCATION (fixp)) + { + symbol_mark_used_in_reloc (fixp->fx_addsy); +#ifdef UNDEFINED_DIFFERENCE_OK + if (fixp->fx_subsy != NULL) + symbol_mark_used_in_reloc (fixp->fx_subsy); +#endif + } + goto done; + } + /* If it's one of these sections, assume the symbol is definitely going to be output. The code in md_estimate_size_before_relax in tc-mips.c uses this test as well, so if you change this code you should look at that code. */ if (bfd_is_und_section (symsec) - || bfd_is_abs_section (symsec) || bfd_is_com_section (symsec)) { - fixp->fx_addsy->sy_used_in_reloc = 1; + symbol_mark_used_in_reloc (fixp->fx_addsy); #ifdef UNDEFINED_DIFFERENCE_OK /* We have the difference of an undefined symbol and some other symbol. Make sure to mark the other symbol as used in a relocation so that it will always be output. */ if (fixp->fx_subsy) - fixp->fx_subsy->sy_used_in_reloc = 1; + symbol_mark_used_in_reloc (fixp->fx_subsy); #endif goto done; } + /* Don't try to reduce relocs which refer to non-local symbols + in .linkonce sections. It can lead to confusion when a + debugging section refers to a .linkonce section. I hope + this will always be correct. */ + if (symsec != sec && ! S_IS_LOCAL (sym)) + { + boolean linkonce; + + linkonce = false; +#ifdef BFD_ASSEMBLER + if ((bfd_get_section_flags (stdoutput, symsec) & SEC_LINK_ONCE) + != 0) + linkonce = true; +#endif +#ifdef OBJ_ELF + /* The GNU toolchain uses an extension for ELF: a section + beginning with the magic string .gnu.linkonce is a + linkonce section. */ + if (strncmp (segment_name (symsec), ".gnu.linkonce", + sizeof ".gnu.linkonce" - 1) == 0) + linkonce = true; +#endif + + if (linkonce) + { + symbol_mark_used_in_reloc (fixp->fx_addsy); +#ifdef UNDEFINED_DIFFERENCE_OK + if (fixp->fx_subsy != NULL) + symbol_mark_used_in_reloc (fixp->fx_subsy); +#endif + goto done; + } + } + /* Since we're reducing to section symbols, don't attempt to reduce anything that's already using one. */ - if (sym->bsym->flags & BSF_SECTION_SYM) + if (symbol_section_p (sym)) + { + symbol_mark_used_in_reloc (fixp->fx_addsy); + goto done; + } + +#ifdef BFD_ASSEMBLER + /* We can never adjust a reloc against a weak symbol. If we + did, and the weak symbol was overridden by a real symbol + somewhere else, then our relocation would be pointing at + the wrong area of memory. */ + if (S_IS_WEAK (sym)) { - fixp->fx_addsy->sy_used_in_reloc = 1; + symbol_mark_used_in_reloc (fixp->fx_addsy); goto done; } +#endif /* Is there some other reason we can't adjust this one? (E.g., call/bal links in i960-bout symbols.) */ #ifdef obj_fix_adjustable if (! obj_fix_adjustable (fixp)) { - fixp->fx_addsy->sy_used_in_reloc = 1; + symbol_mark_used_in_reloc (fixp->fx_addsy); goto done; } #endif /* Is there some other (target cpu dependent) reason we can't adjust - this one? (E.g. relocations involving function addresses on + this one? (E.g. relocations involving function addresses on the PA. */ #ifdef tc_fix_adjustable if (! tc_fix_adjustable (fixp)) { - fixp->fx_addsy->sy_used_in_reloc = 1; + symbol_mark_used_in_reloc (fixp->fx_addsy); goto done; } #endif - /* For PIC support: We may get expressions like - "_GLOBAL_OFFSET_TABLE_+(.-L5)" where "." and "L5" may not - necessarily have had a fixed difference initially. But now - it should be a known constant, so we can reduce it. Since - we can't easily handle a symbol value that looks like - someUndefinedSymbol+const, though, we convert the fixup to - access the undefined symbol directly, and discard the - intermediate symbol. */ - if (S_GET_SEGMENT (sym) == expr_section - && sym->sy_value.X_op == O_add - && (resolve_symbol_value (sym->sy_value.X_add_symbol), - S_GET_SEGMENT (sym->sy_value.X_add_symbol) == undefined_section) - && (resolve_symbol_value (sym->sy_value.X_op_symbol), - S_GET_SEGMENT (sym->sy_value.X_op_symbol) == absolute_section)) - { - fixp->fx_offset += S_GET_VALUE (sym->sy_value.X_op_symbol); - fixp->fx_offset += sym->sy_value.X_add_number; - fixp->fx_addsy = sym->sy_value.X_add_symbol; - goto reduce_fixup; - } - /* If the section symbol isn't going to be output, the relocs at least should still work. If not, figure out what to do - when we run into that case. */ + when we run into that case. + + We refetch the segment when calling section_symbol, rather + than using symsec, because S_GET_VALUE may wind up changing + the section when it calls resolve_symbol_value. */ fixp->fx_offset += S_GET_VALUE (sym); - fixp->fx_addsy = section_symbol (symsec); - fixp->fx_addsy->sy_used_in_reloc = 1; + fixp->fx_addsy = section_symbol (S_GET_SEGMENT (sym)); + symbol_mark_used_in_reloc (fixp->fx_addsy); +#ifdef DEBUG5 + fprintf (stderr, "\nadjusted fixup:\n"); + print_fixup (fixp); +#endif done: ; } -#if 1/*def RELOC_REQUIRES_SYMBOL*/ +#if 1 /* def RELOC_REQUIRES_SYMBOL */ else { /* There was no symbol required by this relocation. However, @@ -727,7 +875,9 @@ adjust_reloc_syms (abfd, sec, xxx) a local symbol in the absolute section. */ fixp->fx_addsy = section_symbol (absolute_section); -/* fixp->fx_addsy->sy_used_in_reloc = 1; */ +#if 0 + fixp->fx_addsy->sy_used_in_reloc = 1; +#endif } #endif @@ -738,7 +888,7 @@ static void write_relocs (abfd, sec, xxx) bfd *abfd; asection *sec; - PTR xxx; + PTR xxx ATTRIBUTE_UNUSED; { segment_info_type *seginfo = seg_info (sec); int i; @@ -760,30 +910,54 @@ write_relocs (abfd, sec, xxx) #ifndef RELOC_EXPANSION_POSSIBLE /* Set up reloc information as well. */ - relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, - n * sizeof (arelent *)); - memset ((char*)relocs, 0, n * sizeof (arelent*)); + relocs = (arelent **) xmalloc (n * sizeof (arelent *)); + memset ((char *) relocs, 0, n * sizeof (arelent *)); i = 0; for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) { arelent *reloc; bfd_reloc_status_type s; + symbolS *sym; if (fixp->fx_done) { n--; continue; } + + /* If this is an undefined symbol which was equated to another + symbol, then use generate the reloc against the latter symbol + rather than the former. */ + sym = fixp->fx_addsy; + while (symbol_equated_p (sym) + && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) + { + 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); if (!reloc) { n--; continue; } + +#if 0 + /* This test is triggered inappropriately for the SH. */ if (fixp->fx_where + fixp->fx_size > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) abort (); +#endif s = bfd_install_relocation (stdoutput, reloc, fixp->fx_frag->fr_literal, @@ -794,19 +968,21 @@ 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")); break; default: - as_fatal ("%s:%u: bad return from bfd_perform_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); } relocs[i++] = reloc; } #else n = n * MAX_RELOC_EXPANSION; /* Set up reloc information as well. */ - relocs = (arelent **) bfd_alloc_by_size_t (stdoutput, - n * sizeof (arelent *)); + relocs = (arelent **) xmalloc (n * sizeof (arelent *)); i = 0; for (fixp = seginfo->fix_root; fixp != (fixS *) NULL; fixp = fixp->fx_next) @@ -814,6 +990,7 @@ write_relocs (abfd, sec, xxx) arelent **reloc; char *data; bfd_reloc_status_type s; + symbolS *sym; int j; if (fixp->fx_done) @@ -821,36 +998,47 @@ write_relocs (abfd, sec, xxx) n--; continue; } + + /* If this is an undefined symbol which was equated to another + symbol, then use generate the reloc against the latter symbol + rather than the former. */ + sym = fixp->fx_addsy; + while (symbol_equated_p (sym) + && (! S_IS_DEFINED (sym) || S_IS_COMMON (sym))) + sym = symbol_get_value_expression (sym)->X_add_symbol; + fixp->fx_addsy = sym; + reloc = tc_gen_reloc (sec, fixp); for (j = 0; reloc[j]; j++) { - relocs[i++] = reloc[j]; - assert(i <= n); + relocs[i++] = reloc[j]; + assert (i <= n); } data = fixp->fx_frag->fr_literal + fixp->fx_where; if (fixp->fx_where + fixp->fx_size > fixp->fx_frag->fr_fix + fixp->fx_frag->fr_offset) - abort (); + as_bad_where (fixp->fx_file, fixp->fx_line, + _("internal error: fixup not contained within frag")); for (j = 0; reloc[j]; j++) - { + { s = bfd_install_relocation (stdoutput, reloc[j], fixp->fx_frag->fr_literal, fixp->fx_frag->fr_address, sec, &err); - switch (s) + switch (s) { case bfd_reloc_ok: break; case bfd_reloc_overflow: as_bad_where (fixp->fx_file, fixp->fx_line, - "relocation overflow"); + _("relocation overflow")); break; default: - as_fatal ("%s:%u: bad return from bfd_perform_relocation", + as_fatal (_("%s:%u: bad return from bfd_install_relocation"), fixp->fx_file, fixp->fx_line); } - } + } } n = i; #endif @@ -880,6 +1068,10 @@ write_relocs (abfd, sec, xxx) (bfd_get_section_flags (abfd, sec) & (flagword) ~SEC_RELOC)); +#ifdef SET_SECTION_RELOCS + SET_SECTION_RELOCS (sec, relocs, n); +#endif + #ifdef DEBUG3 { int i; @@ -899,9 +1091,9 @@ write_relocs (abfd, sec, xxx) static void write_contents (abfd, sec, xxx) - bfd *abfd; + bfd *abfd ATTRIBUTE_UNUSED; asection *sec; - PTR xxx; + PTR xxx ATTRIBUTE_UNUSED; { segment_info_type *seginfo = seg_info (sec); unsigned long offset = 0; @@ -909,7 +1101,7 @@ write_contents (abfd, sec, xxx) /* Write out the frags. */ if (seginfo == NULL - || ! (bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)) + || !(bfd_get_section_flags (abfd, sec) & SEC_HAS_CONTENTS)) return; for (f = seginfo->frchainP->frch_root; @@ -930,7 +1122,7 @@ write_contents (abfd, sec, xxx) if (x == false) { bfd_perror (stdoutput->filename); - as_perror ("FATAL: Can't write %s", stdoutput->filename); + as_perror (_("FATAL: Can't write %s"), stdoutput->filename); exit (EXIT_FAILURE); } offset += f->fr_fix; @@ -942,9 +1134,9 @@ write_contents (abfd, sec, xxx) if (fill_size && count) { char buf[256]; - if (fill_size > sizeof(buf)) + if (fill_size > sizeof (buf)) { - /* Do it the old way. Can this ever happen? */ + /* Do it the old way. Can this ever happen? */ while (count--) { x = bfd_set_section_contents (stdoutput, sec, @@ -954,7 +1146,8 @@ write_contents (abfd, sec, xxx) if (x == false) { bfd_perror (stdoutput->filename); - as_perror ("FATAL: Can't write %s", stdoutput->filename); + as_perror (_("FATAL: Can't write %s"), + stdoutput->filename); exit (EXIT_FAILURE); } offset += fill_size; @@ -974,18 +1167,18 @@ write_contents (abfd, sec, xxx) else { char *bufp; - n_per_buf = sizeof(buf)/fill_size; + n_per_buf = sizeof (buf) / fill_size; for (i = n_per_buf, bufp = buf; i; i--, bufp += fill_size) - memcpy(bufp, fill_literal, fill_size); + memcpy (bufp, fill_literal, fill_size); } for (; count > 0; count -= n_per_buf) { n_per_buf = n_per_buf > count ? count : n_per_buf; - x = bfd_set_section_contents (stdoutput, sec, - buf, (file_ptr) offset, - (bfd_size_type) n_per_buf * fill_size); + x = bfd_set_section_contents + (stdoutput, sec, buf, (file_ptr) offset, + (bfd_size_type) n_per_buf * fill_size); if (x != true) - as_fatal ("Cannot write to output file."); + as_fatal (_("Cannot write to output file.")); offset += n_per_buf * fill_size; } } @@ -1022,7 +1215,7 @@ merge_data_into_text () data_fix_root = NULL; #endif } -#endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */ +#endif /* BFD_ASSEMBLER || (! BFD && ! OBJ_AOUT) */ #if !defined (BFD_ASSEMBLER) && !defined (BFD) static void @@ -1033,30 +1226,27 @@ relax_and_size_all_segments () relax_segment (text_frag_root, SEG_TEXT); relax_segment (data_frag_root, SEG_DATA); relax_segment (bss_frag_root, SEG_BSS); - /* - * Now the addresses of frags are correct within the segment. - */ + /* Now the addresses of frags are correct within the segment. */ know (text_last_frag->fr_type == rs_fill && text_last_frag->fr_offset == 0); H_SET_TEXT_SIZE (&headers, text_last_frag->fr_address); text_last_frag->fr_address = H_GET_TEXT_SIZE (&headers); - /* - * Join the 2 segments into 1 huge segment. - * To do this, re-compute every rn_address in the SEG_DATA frags. - * Then join the data frags after the text frags. - * - * Determine a_data [length of data segment]. - */ + /* Join the 2 segments into 1 huge segment. + To do this, re-compute every rn_address in the SEG_DATA frags. + Then join the data frags after the text frags. + + Determine a_data [length of data segment]. */ if (data_frag_root) { register relax_addressT slide; - know ((text_last_frag->fr_type == rs_fill) && (text_last_frag->fr_offset == 0)); + know ((text_last_frag->fr_type == rs_fill) + && (text_last_frag->fr_offset == 0)); H_SET_DATA_SIZE (&headers, data_last_frag->fr_address); data_last_frag->fr_address = H_GET_DATA_SIZE (&headers); - slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */ + slide = H_GET_TEXT_SIZE (&headers); /* & in file of the data segment. */ #ifdef OBJ_BOUT #define RoundUp(N,S) (((N)+(S)-1)&-(S)) /* For b.out: If the data section has a strict alignment @@ -1068,9 +1258,7 @@ relax_and_size_all_segments () #endif for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) - { - fragP->fr_address += slide; - } /* for each data frag */ + fragP->fr_address += slide; know (text_last_frag != 0); text_last_frag->fr_next = data_frag_root; @@ -1091,21 +1279,19 @@ relax_and_size_all_segments () bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]); bss_address_frag.fr_address = bss_vma; } -#else /* ! OBJ_BOUT */ +#else /* ! OBJ_BOUT */ bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers)); -#endif /* ! OBJ_BOUT */ +#endif /* ! OBJ_BOUT */ - /* Slide all the frags */ + /* Slide all the frags. */ if (bss_frag_root) { relax_addressT slide = bss_address_frag.fr_address; for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next) - { - fragP->fr_address += slide; - } /* for each bss frag */ + fragP->fr_address += slide; } if (bss_last_frag) @@ -1114,7 +1300,7 @@ relax_and_size_all_segments () else H_SET_BSS_SIZE (&headers, 0); } -#endif /* ! BFD_ASSEMBLER && ! BFD */ +#endif /* ! BFD_ASSEMBLER && ! BFD */ #if defined (BFD_ASSEMBLER) || !defined (BFD) @@ -1144,8 +1330,8 @@ set_symtab () symp = symbol_rootP; for (i = 0; i < nsyms; i++, symp = symbol_next (symp)) { - asympp[i] = symp->bsym; - symp->written = 1; + asympp[i] = symbol_get_bfdsym (symp); + symbol_mark_written (symp); } } else @@ -1156,12 +1342,68 @@ set_symtab () } #endif -void +#if defined (BFD_ASSEMBLER) && defined (OBJ_COFF) && defined (TE_GO32) +static void +set_segment_vma (abfd, sec, xxx) + bfd *abfd; + asection *sec; + PTR xxx ATTRIBUTE_UNUSED; +{ + static bfd_vma addr = 0; + + bfd_set_section_vma (abfd, sec, addr); + addr += bfd_section_size (abfd, sec); +} +#endif /* BFD_ASSEMBLER && OBJ_COFF && !TE_PE */ + +/* Finish the subsegments. After every sub-segment, we fake an + ".align ...". This conforms to BSD4.2 brane-damage. We then fake + ".fill 0" because that is the kind of frag that requires least + thought. ".align" frags like to have a following frag since that + makes calculating their intended length trivial. */ + +#ifndef SUB_SEGMENT_ALIGN +#ifdef BFD_ASSEMBLER +#define SUB_SEGMENT_ALIGN(SEG) (0) +#else +#define SUB_SEGMENT_ALIGN(SEG) (2) +#endif +#endif + +void +subsegs_finish () +{ + struct frchain *frchainP; + + for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) + { + subseg_set (frchainP->frch_seg, frchainP->frch_subseg); + + /* This now gets called even if we had errors. In that case, + any alignment is meaningless, and, moreover, will look weird + if we are generating a listing. */ + frag_align (had_errors () ? 0 : SUB_SEGMENT_ALIGN (now_seg), + subseg_text_p (now_seg) ? NOP_OPCODE : 0, + 0); + + /* frag_align will have left a new frag. + Use this last frag for an empty ".fill". + + For this segment ... + Create a last frag. Do not leave a "being filled in frag". */ + frag_wane (frag_now); + frag_now->fr_fix = 0; + know (frag_now->fr_next == NULL); + } +} + +/* Write the object file. */ + +void write_object_file () { - struct frchain *frchainP; /* Track along all frchains. */ #if ! defined (BFD_ASSEMBLER) || ! defined (WORKING_DOT_WORD) - fragS *fragP; /* Track along all frags. */ + fragS *fragP; /* Track along all frags. */ #endif /* Do we really want to write it? */ @@ -1174,14 +1416,14 @@ write_object_file () if (flag_always_generate_output) { if (n_warns || n_errs) - as_warn ("%d error%s, %d warning%s, generating bad object file.\n", + as_warn (_("%d error%s, %d warning%s, generating bad object file.\n"), n_errs, n_errs == 1 ? "" : "s", n_warns, n_warns == 1 ? "" : "s"); } else { if (n_errs) - as_fatal ("%d error%s, %d warning%s, no object file generated.\n", + as_fatal (_("%d error%s, %d warning%s, no object file generated.\n"), n_errs, n_errs == 1 ? "" : "s", n_warns, n_warns == 1 ? "" : "s"); } @@ -1190,37 +1432,9 @@ write_object_file () #ifdef OBJ_VMS /* Under VMS we try to be compatible with VAX-11 "C". Thus, we call a routine to check for the definition of the procedure "_main", - and if so -- fix it up so that it can be program entry point. */ + and if so -- fix it up so that it can be program entry point. */ vms_check_for_main (); -#endif /* OBJ_VMS */ - - /* After every sub-segment, we fake an ".align ...". This conforms to - BSD4.2 brane-damage. We then fake ".fill 0" because that is the kind of - frag that requires least thought. ".align" frags like to have a - following frag since that makes calculating their intended length - trivial. - - @@ Is this really necessary?? */ -#ifndef SUB_SEGMENT_ALIGN -#ifdef BFD_ASSEMBLER -#define SUB_SEGMENT_ALIGN(SEG) (0) -#else -#define SUB_SEGMENT_ALIGN(SEG) (2) -#endif -#endif - for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) - { - subseg_set (frchainP->frch_seg, frchainP->frch_subseg); - frag_align (SUB_SEGMENT_ALIGN (now_seg), NOP_OPCODE); - /* frag_align will have left a new frag. - Use this last frag for an empty ".fill". - - For this segment ... - Create a last frag. Do not leave a "being filled in frag". */ - frag_wane (frag_now); - frag_now->fr_fix = 0; - know (frag_now->fr_next == NULL); - } +#endif /* OBJ_VMS */ /* From now on, we don't care about sub-segments. Build one frag chain for each segment. Linked thru fr_next. */ @@ -1271,30 +1485,34 @@ write_object_file () bfd_map_over_sections (stdoutput, relax_and_size_seg, (char *) 0); #else relax_and_size_all_segments (); -#endif /* BFD_ASSEMBLER */ +#endif /* BFD_ASSEMBLER */ + +#if defined (BFD_ASSEMBLER) && defined (OBJ_COFF) && defined (TE_GO32) + /* Now that the segments have their final sizes, run through the + sections and set their vma and lma. !BFD gas sets them, and BFD gas + should too. Currently, only DJGPP uses this code, but other + COFF targets may need to execute this too. */ + bfd_map_over_sections (stdoutput, set_segment_vma, (char *) 0); +#endif #ifndef BFD_ASSEMBLER - /* - * - * Crawl the symbol chain. - * - * For each symbol whose value depends on a frag, take the address of - * that frag and subsume it into the value of the symbol. - * After this, there is just one way to lookup a symbol value. - * Values are left in their final state for object file emission. - * We adjust the values of 'L' local symbols, even if we do - * not intend to emit them to the object file, because their values - * are needed for fix-ups. - * - * Unless we saw a -L flag, remove all symbols that begin with 'L' - * from the symbol chain. (They are still pointed to by the fixes.) - * - * Count the remaining symbols. - * Assign a symbol number to each symbol. - * Count the number of string-table chars we will emit. - * Put this info into the headers as appropriate. - * - */ + /* Crawl the symbol chain. + + For each symbol whose value depends on a frag, take the address of + that frag and subsume it into the value of the symbol. + After this, there is just one way to lookup a symbol value. + Values are left in their final state for object file emission. + We adjust the values of 'L' local symbols, even if we do + not intend to emit them to the object file, because their values + are needed for fix-ups. + + Unless we saw a -L flag, remove all symbols that begin with 'L' + from the symbol chain. (They are still pointed to by the fixes.) + + Count the remaining symbols. + Assign a symbol number to each symbol. + Count the number of string-table chars we will emit. + Put this info into the headers as appropriate. */ know (zero_address_frag.fr_address == 0); string_byte_count = sizeof (string_byte_count); @@ -1305,16 +1523,21 @@ write_object_file () H_SET_STRING_SIZE (&headers, string_byte_count); - /* - * Addresses of frags now reflect addresses we use in the object file. - * Symbol values are correct. - * Scan the frags, converting any ".org"s and ".align"s to ".fill"s. - * Also converting any machine-dependent frags using md_convert_frag(); - */ + /* Addresses of frags now reflect addresses we use in the object file. + Symbol values are correct. + Scan the frags, converting any ".org"s and ".align"s to ".fill"s. + Also converting any machine-dependent frags using md_convert_frag(); */ subseg_change (SEG_TEXT, 0); for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) { + /* At this point we have linked all the frags into a single + chain. However, cvt_frag_to_fill may call md_convert_frag + which may call fix_new. We need to ensure that fix_new adds + the fixup to the right section. */ + if (fragP == data_frag_root) + subseg_change (SEG_DATA, 0); + cvt_frag_to_fill (&headers, SEG_TEXT, fragP); /* Some assert macros don't work with # directives mixed in. */ @@ -1328,7 +1551,7 @@ write_object_file () abort (); #endif } -#endif /* ! BFD_ASSEMBLER */ +#endif /* ! BFD_ASSEMBLER */ #ifndef WORKING_DOT_WORD { @@ -1341,6 +1564,7 @@ write_object_file () { expressionS exp; + subseg_change (lie->seg, lie->subseg); exp.X_op = O_subtract; exp.X_add_symbol = lie->add; exp.X_op_symbol = lie->sub; @@ -1348,12 +1572,12 @@ write_object_file () #ifdef BFD_ASSEMBLER #ifdef TC_CONS_FIX_NEW TC_CONS_FIX_NEW (lie->frag, - lie->word_goes_here - lie->frag->fr_literal, - 2, &exp); + lie->word_goes_here - lie->frag->fr_literal, + 2, &exp); #else fix_new_exp (lie->frag, lie->word_goes_here - lie->frag->fr_literal, - 2, &exp, 0, BFD_RELOC_NONE); + 2, &exp, 0, BFD_RELOC_16); #endif #else #if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE) @@ -1369,9 +1593,9 @@ write_object_file () fix_new_exp (lie->frag, lie->word_goes_here - lie->frag->fr_literal, 2, &exp, 0, 0); -#endif /* TC_NS32K */ -#endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */ -#endif /* BFD_ASSEMBLER */ +#endif /* TC_NS32K */ +#endif /* TC_SPARC|TC_A29K|NEED_FX_R_TYPE */ +#endif /* BFD_ASSEMBLER */ *prevP = lie->next_broken_word; } else @@ -1385,65 +1609,76 @@ write_object_file () addressT from_addr, to_addr; int n, m; + subseg_change (lie->seg, lie->subseg); fragP = lie->dispfrag; /* Find out how many broken_words go here. */ n = 0; - for (untruth = lie; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) + for (untruth = lie; + untruth && untruth->dispfrag == fragP; + untruth = untruth->next_broken_word) if (untruth->added == 1) n++; table_ptr = lie->dispfrag->fr_opcode; - table_addr = lie->dispfrag->fr_address + (table_ptr - lie->dispfrag->fr_literal); + table_addr = (lie->dispfrag->fr_address + + (table_ptr - lie->dispfrag->fr_literal)); /* Create the jump around the long jumps. This is a short jump from table_ptr+0 to table_ptr+n*long_jump_size. */ from_addr = table_addr; to_addr = table_addr + md_short_jump_size + n * md_long_jump_size; - md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); + md_create_short_jump (table_ptr, from_addr, to_addr, lie->dispfrag, + lie->add); table_ptr += md_short_jump_size; table_addr += md_short_jump_size; - for (m = 0; lie && lie->dispfrag == fragP; m++, lie = lie->next_broken_word) + for (m = 0; + lie && lie->dispfrag == fragP; + m++, lie = lie->next_broken_word) { if (lie->added == 2) continue; - /* Patch the jump table */ - /* This is the offset from ??? to table_ptr+0 */ + /* Patch the jump table. */ + /* This is the offset from ??? to table_ptr+0. */ to_addr = table_addr - S_GET_VALUE (lie->sub); #ifdef BFD_ASSEMBLER - to_addr -= lie->sub->sy_frag->fr_address; + to_addr -= symbol_get_frag (lie->sub)->fr_address; +#endif +#ifdef TC_CHECK_ADJUSTED_BROKEN_DOT_WORD + TC_CHECK_ADJUSTED_BROKEN_DOT_WORD (to_addr, lie); #endif md_number_to_chars (lie->word_goes_here, to_addr, 2); - for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == fragP; untruth = untruth->next_broken_word) + for (untruth = lie->next_broken_word; + untruth && untruth->dispfrag == fragP; + untruth = untruth->next_broken_word) { if (untruth->use_jump == lie) md_number_to_chars (untruth->word_goes_here, to_addr, 2); } - /* Install the long jump */ - /* this is a long jump from table_ptr+0 to the final target */ + /* Install the long jump. */ + /* This is a long jump from table_ptr+0 to the final target. */ from_addr = table_addr; to_addr = S_GET_VALUE (lie->add) + lie->addnum; #ifdef BFD_ASSEMBLER - to_addr += lie->add->sy_frag->fr_address; + to_addr += symbol_get_frag (lie->add)->fr_address; #endif - md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, lie->add); + md_create_long_jump (table_ptr, from_addr, to_addr, lie->dispfrag, + lie->add); table_ptr += md_long_jump_size; table_addr += md_long_jump_size; } } } -#endif /* not WORKING_DOT_WORD */ +#endif /* not WORKING_DOT_WORD */ #ifndef BFD_ASSEMBLER #ifndef OBJ_VMS - { /* not vms */ + { /* not vms */ char *the_object_file; long object_file_size; - /* - * Scan every FixS performing fixups. We had to wait until now to do - * this because md_convert_frag() may have made some fixSs. - */ + /* Scan every FixS performing fixups. We had to wait until now to + do this because md_convert_frag() may have made some fixSs. */ int trsize, drsize; subseg_change (SEG_TEXT, 0); @@ -1452,11 +1687,11 @@ write_object_file () drsize = md_reloc_size * fixup_segment (data_fix_root, SEG_DATA); H_SET_RELOCATION_SIZE (&headers, trsize, drsize); - /* FIXME move this stuff into the pre-write-hook */ + /* FIXME: Move this stuff into the pre-write-hook. */ H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file); H_SET_ENTRY_POINT (&headers, 0); - obj_pre_write_hook (&headers); /* extra coff stuff */ + obj_pre_write_hook (&headers); /* Extra coff stuff. */ object_file_size = H_GET_FILE_SIZE (&headers); next_object_file_charP = the_object_file = xmalloc (object_file_size); @@ -1465,11 +1700,10 @@ write_object_file () obj_header_append (&next_object_file_charP, &headers); - know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers)); + know ((next_object_file_charP - the_object_file) + == H_GET_HEADER_SIZE (&headers)); - /* - * Emit code. - */ + /* Emit code. */ for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) { register long count; @@ -1478,78 +1712,91 @@ write_object_file () PROGRESS (1); know (fragP->fr_type == rs_fill); - append (&next_object_file_charP, fragP->fr_literal, (unsigned long) fragP->fr_fix); + append (&next_object_file_charP, fragP->fr_literal, + (unsigned long) fragP->fr_fix); fill_literal = fragP->fr_literal + fragP->fr_fix; fill_size = fragP->fr_var; know (fragP->fr_offset >= 0); for (count = fragP->fr_offset; count; count--) - { - append (&next_object_file_charP, fill_literal, (unsigned long) fill_size); - } /* for each */ - - } /* for each code frag. */ - - know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers))); + append (&next_object_file_charP, fill_literal, + (unsigned long) fill_size); + } - /* - * Emit relocations. - */ - obj_emit_relocations (&next_object_file_charP, text_fix_root, (relax_addressT) 0); - know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers))); + know ((next_object_file_charP - the_object_file) + == (H_GET_HEADER_SIZE (&headers) + + H_GET_TEXT_SIZE (&headers) + + H_GET_DATA_SIZE (&headers))); + + /* Emit relocations. */ + obj_emit_relocations (&next_object_file_charP, text_fix_root, + (relax_addressT) 0); + know ((next_object_file_charP - the_object_file) + == (H_GET_HEADER_SIZE (&headers) + + H_GET_TEXT_SIZE (&headers) + + H_GET_DATA_SIZE (&headers) + + H_GET_TEXT_RELOCATION_SIZE (&headers))); #ifdef TC_I960 /* Make addresses in data relocation directives relative to beginning of - * first data fragment, not end of last text fragment: alignment of the - * start of the data segment may place a gap between the segments. - */ - obj_emit_relocations (&next_object_file_charP, data_fix_root, data0_frchainP->frch_root->fr_address); -#else /* TC_I960 */ - obj_emit_relocations (&next_object_file_charP, data_fix_root, text_last_frag->fr_address); -#endif /* TC_I960 */ - - know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers) + H_GET_DATA_RELOCATION_SIZE (&headers))); - - /* - * Emit line number entries. - */ + first data fragment, not end of last text fragment: alignment of the + start of the data segment may place a gap between the segments. */ + obj_emit_relocations (&next_object_file_charP, data_fix_root, + data0_frchainP->frch_root->fr_address); +#else /* TC_I960 */ + obj_emit_relocations (&next_object_file_charP, data_fix_root, + text_last_frag->fr_address); +#endif /* TC_I960 */ + + know ((next_object_file_charP - the_object_file) + == (H_GET_HEADER_SIZE (&headers) + + H_GET_TEXT_SIZE (&headers) + + H_GET_DATA_SIZE (&headers) + + H_GET_TEXT_RELOCATION_SIZE (&headers) + + H_GET_DATA_RELOCATION_SIZE (&headers))); + + /* Emit line number entries. */ OBJ_EMIT_LINENO (&next_object_file_charP, lineno_rootP, the_object_file); - know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers) + H_GET_DATA_RELOCATION_SIZE (&headers) + H_GET_LINENO_SIZE (&headers))); - - /* - * Emit symbols. - */ + know ((next_object_file_charP - the_object_file) + == (H_GET_HEADER_SIZE (&headers) + + H_GET_TEXT_SIZE (&headers) + + H_GET_DATA_SIZE (&headers) + + H_GET_TEXT_RELOCATION_SIZE (&headers) + + H_GET_DATA_RELOCATION_SIZE (&headers) + + H_GET_LINENO_SIZE (&headers))); + + /* Emit symbols. */ obj_emit_symbols (&next_object_file_charP, symbol_rootP); - know ((next_object_file_charP - the_object_file) == (H_GET_HEADER_SIZE (&headers) + H_GET_TEXT_SIZE (&headers) + H_GET_DATA_SIZE (&headers) + H_GET_TEXT_RELOCATION_SIZE (&headers) + H_GET_DATA_RELOCATION_SIZE (&headers) + H_GET_LINENO_SIZE (&headers) + H_GET_SYMBOL_TABLE_SIZE (&headers))); - - /* - * Emit strings. - */ - + know ((next_object_file_charP - the_object_file) + == (H_GET_HEADER_SIZE (&headers) + + H_GET_TEXT_SIZE (&headers) + + H_GET_DATA_SIZE (&headers) + + H_GET_TEXT_RELOCATION_SIZE (&headers) + + H_GET_DATA_RELOCATION_SIZE (&headers) + + H_GET_LINENO_SIZE (&headers) + + H_GET_SYMBOL_TABLE_SIZE (&headers))); + + /* Emit strings. */ if (string_byte_count > 0) - { - obj_emit_strings (&next_object_file_charP); - } /* only if we have a string table */ + obj_emit_strings (&next_object_file_charP); #ifdef BFD_HEADERS bfd_seek (stdoutput, 0, 0); bfd_write (the_object_file, 1, object_file_size, stdoutput); #else - /* Write the data to the file */ + /* Write the data to the file. */ output_file_append (the_object_file, object_file_size, out_file_name); free (the_object_file); #endif - } /* non vms output */ -#else /* OBJ_VMS */ - /* - * Now do the VMS-dependent part of writing the object file - */ + } +#else /* OBJ_VMS */ + /* Now do the VMS-dependent part of writing the object file. */ vms_write_object_file (H_GET_TEXT_SIZE (&headers), H_GET_DATA_SIZE (&headers), H_GET_BSS_SIZE (&headers), text_frag_root, data_frag_root); -#endif /* OBJ_VMS */ -#else /* BFD_ASSEMBLER */ +#endif /* OBJ_VMS */ +#else /* BFD_ASSEMBLER */ /* Resolve symbol values. This needs to be done before processing the relocations. */ @@ -1558,13 +1805,20 @@ write_object_file () symbolS *symp; for (symp = symbol_rootP; symp; symp = symbol_next (symp)) - if (!symp->sy_resolved) - resolve_symbol_value (symp); + resolve_symbol_value (symp, 1); } + resolve_local_symbol_values (); PROGRESS (1); - bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *)0); +#ifdef tc_frob_file_before_adjust + tc_frob_file_before_adjust (); +#endif +#ifdef obj_frob_file_before_adjust + obj_frob_file_before_adjust (); +#endif + + bfd_map_over_sections (stdoutput, adjust_reloc_syms, (char *) 0); /* Set up symbol table, and write it out. */ if (symbol_rootP) @@ -1576,10 +1830,10 @@ write_object_file () int punt = 0; const char *name; - if (symp->sy_mri_common) + if (symbol_mri_common_p (symp)) { if (S_IS_EXTERNAL (symp)) - as_bad ("%s: global symbols not supported in common sections", + as_bad (_("%s: global symbols not supported in common sections"), S_GET_NAME (symp)); symbol_remove (symp, &symbol_rootP, &symbol_lastP); continue; @@ -1588,28 +1842,26 @@ write_object_file () name = S_GET_NAME (symp); if (name) { - const char *name2 = decode_local_label_name ((char *)S_GET_NAME (symp)); + const char *name2 = + decode_local_label_name ((char *) S_GET_NAME (symp)); /* They only differ if `name' is a fb or dollar local label name. */ if (name2 != name && ! S_IS_DEFINED (symp)) - as_bad ("local label %s is not defined", name2); + as_bad (_("local label %s is not defined"), name2); } /* Do it again, because adjust_reloc_syms might introduce more symbols. They'll probably only be section symbols, but they'll still need to have the values computed. */ - if (! symp->sy_resolved) + resolve_symbol_value (symp, 1); + + /* Skip symbols which were equated to undefined or common + symbols. */ + if (symbol_equated_p (symp) + && (! S_IS_DEFINED (symp) || S_IS_COMMON (symp))) { - if (symp->sy_value.X_op == O_constant) - { - /* This is the normal case; skip the call. */ - S_SET_VALUE (symp, - (S_GET_VALUE (symp) - + symp->sy_frag->fr_address)); - symp->sy_resolved = 1; - } - else - resolve_symbol_value (symp); + symbol_remove (symp, &symbol_rootP, &symbol_lastP); + continue; } /* So far, common symbols have been treated like undefined symbols. @@ -1621,15 +1873,15 @@ write_object_file () printf ("symbol `%s'\n\t@%x: value=%d flags=%x seg=%s\n", S_GET_NAME (symp), symp, S_GET_VALUE (symp), - symp->bsym->flags, - segment_name (symp->bsym->section)); + symbol_get_bfdsym (symp)->flags, + segment_name (S_GET_SEGMENT (symp))); #endif #ifdef obj_frob_symbol obj_frob_symbol (symp, punt); #endif #ifdef tc_frob_symbol - if (! punt || symp->sy_used_in_reloc) + if (! punt || symbol_used_in_reloc_p (symp)) tc_frob_symbol (symp, punt); #endif @@ -1639,33 +1891,33 @@ write_object_file () and symbols that the frob_symbol macros told us to punt, but we keep such symbols if they are used in relocs. */ if ((! EMIT_SECTION_SYMBOLS - && (symp->bsym->flags & BSF_SECTION_SYM) != 0) + && symbol_section_p (symp)) /* Note that S_IS_EXTERN and S_IS_LOCAL are not always opposites. Sometimes the former checks flags and the latter examines the name... */ || (!S_IS_EXTERN (symp) && (S_IS_LOCAL (symp) || punt) - && ! symp->sy_used_in_reloc)) + && ! symbol_used_in_reloc_p (symp))) { symbol_remove (symp, &symbol_rootP, &symbol_lastP); + /* After symbol_remove, symbol_next(symp) still returns the one that came after it in the chain. So we don't need to do any extra cleanup work here. */ - continue; } /* Make sure we really got a value for the symbol. */ - if (! symp->sy_resolved) + if (! symbol_resolved_p (symp)) { - as_bad ("can't resolve value for symbol \"%s\"", + as_bad (_("can't resolve value for symbol \"%s\""), S_GET_NAME (symp)); - symp->sy_resolved = 1; + symbol_mark_resolved (symp); } /* Set the value into the BFD symbol. Up til now the value has only been kept in the gas symbolS struct. */ - symp->bsym->value = S_GET_VALUE (symp); + symbol_get_bfdsym (symp)->value = S_GET_VALUE (symp); } } @@ -1673,6 +1925,9 @@ write_object_file () /* Now do any format-specific adjustments to the symbol table, such as adding file symbols. */ +#ifdef tc_adjust_symtab + tc_adjust_symtab (); +#endif #ifdef obj_adjust_symtab obj_adjust_symtab (); #endif @@ -1694,31 +1949,27 @@ write_object_file () bfd_map_over_sections (stdoutput, write_relocs, (char *) 0); +#ifdef tc_frob_file_after_relocs + tc_frob_file_after_relocs (); +#endif +#ifdef obj_frob_file_after_relocs + obj_frob_file_after_relocs (); +#endif + bfd_map_over_sections (stdoutput, write_contents, (char *) 0); -#endif /* BFD_ASSEMBLER */ +#endif /* BFD_ASSEMBLER */ } -#endif /* ! BFD */ - -/* - * relax_segment() - * - * Now we have a segment, not a crowd of sub-segments, we can make fr_address - * values. - * - * Relax the frags. - * - * After this, all frags in this segment have addresses that are correct - * within the segment. Since segments live in different file addresses, - * these frag addresses may not be the same as final object-file addresses. - */ - -#ifndef md_relax_frag +#endif /* ! BFD */ + +#ifdef TC_GENERIC_RELAX_TABLE + +static int is_dnrange PARAMS ((fragS *, fragS *)); /* Subroutines of relax_segment. */ -static int +static int is_dnrange (f1, f2) - struct frag *f1; - struct frag *f2; + fragS *f1; + fragS *f2; { for (; f1; f1 = f1->fr_next) if (f1->fr_next == f2) @@ -1726,14 +1977,118 @@ is_dnrange (f1, f2) return 0; } -#endif /* ! defined (md_relax_frag) */ +/* Relax a fragment by scanning TC_GENERIC_RELAX_TABLE. */ + +long +relax_frag (fragP, stretch) + fragS *fragP; + long stretch; +{ + const relax_typeS *this_type; + const relax_typeS *start_type; + relax_substateT next_state; + relax_substateT this_state; + long aim, target, growth; + symbolS *symbolP = fragP->fr_symbol; + long offset = fragP->fr_offset; + /* Recompute was_address by undoing "+= stretch" done by relax_segment. */ + unsigned long was_address = fragP->fr_address - stretch; + unsigned long address = fragP->fr_address; + const relax_typeS *table = TC_GENERIC_RELAX_TABLE; + + this_state = fragP->fr_subtype; + start_type = this_type = table + this_state; + target = offset; + + if (symbolP) + { +#ifndef DIFF_EXPR_OK +#if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) + know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) + || (S_GET_SEGMENT (symbolP) == SEG_DATA) + || (S_GET_SEGMENT (symbolP) == SEG_BSS) + || (S_GET_SEGMENT (symbolP) == SEG_TEXT)); +#endif + know (symbolP->sy_frag); +#endif + know (!(S_GET_SEGMENT (symbolP) == absolute_section) + || symbolP->sy_frag == &zero_address_frag); + target += S_GET_VALUE (symbolP) + symbol_get_frag (symbolP)->fr_address; + + /* If frag has yet to be reached on this pass, + assume it will move by STRETCH just as we did. + If this is not so, it will be because some frag + between grows, and that will force another pass. + + Beware zero-length frags. + + There should be a faster way to do this. */ + + if (symbol_get_frag (symbolP)->fr_address >= was_address + && is_dnrange (fragP, symbol_get_frag (symbolP))) + { + target += stretch; + } + } + + aim = target - address - fragP->fr_fix; +#ifdef TC_PCREL_ADJUST + /* Currently only the ns32k family needs this. */ + aim += TC_PCREL_ADJUST (fragP); +/* #else */ + /* This machine doesn't want to use pcrel_adjust. + In that case, pcrel_adjust should be zero. */ +#if 0 + assert (fragP->fr_targ.ns32k.pcrel_adjust == 0); +#endif +#endif +#ifdef md_prepare_relax_scan /* formerly called M68K_AIM_KLUDGE */ + md_prepare_relax_scan (fragP, address, aim, this_state, this_type); +#endif + + if (aim < 0) + { + /* Look backwards. */ + for (next_state = this_type->rlx_more; next_state;) + if (aim >= this_type->rlx_backward) + next_state = 0; + else + { + /* Grow to next state. */ + this_state = next_state; + this_type = table + this_state; + next_state = this_type->rlx_more; + } + } + else + { + /* Look forwards. */ + for (next_state = this_type->rlx_more; next_state;) + if (aim <= this_type->rlx_forward) + next_state = 0; + else + { + /* Grow to next state. */ + this_state = next_state; + this_type = table + this_state; + next_state = this_type->rlx_more; + } + } + + growth = this_type->rlx_length - start_type->rlx_length; + if (growth != 0) + fragP->fr_subtype = this_state; + return growth; +} + +#endif /* defined (TC_GENERIC_RELAX_TABLE) */ /* Relax_align. Advance location counter to next address that has 'alignment' lowest order bits all 0s, return size of adjustment made. */ static relax_addressT relax_align (address, alignment) - register relax_addressT address; /* Address now. */ - register int alignment; /* Alignment (binary). */ + register relax_addressT address; /* Address now. */ + register int alignment; /* Alignment (binary). */ { relax_addressT mask; relax_addressT new_address; @@ -1749,7 +2104,17 @@ relax_align (address, alignment) return (new_address - address); } -void +/* Now we have a segment, not a crowd of sub-segments, we can make + fr_address values. + + Relax the frags. + + After this, all frags in this segment have addresses that are correct + within the segment. Since segments live in different file addresses, + these frag addresses may not be the same as final object-file + addresses. */ + +void relax_segment (segment_frag_root, segment) struct frag *segment_frag_root; segT segment; @@ -1759,7 +2124,7 @@ relax_segment (segment_frag_root, segment) #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS); #endif - /* In case md_estimate_size_before_relax() wants to make fixSs. */ + /* In case md_estimate_size_before_relax() wants to make fixSs. */ subseg_change (segment, 0); /* For each frag in segment: count and store (a 1st guess of) @@ -1779,13 +2144,18 @@ relax_segment (segment_frag_root, segment) case rs_align: case rs_align_code: { - int offset = relax_align (address, (int) fragP->fr_offset); + addressT offset = relax_align (address, (int) fragP->fr_offset); + + if (fragP->fr_subtype != 0 && offset > fragP->fr_subtype) + offset = 0; + if (offset % fragP->fr_var != 0) { - as_bad ("alignment padding (%d bytes) not a multiple of %ld", - offset, (long) fragP->fr_var); + as_bad (_("alignment padding (%lu bytes) not a multiple of %ld"), + (unsigned long) offset, (long) fragP->fr_var); offset -= (offset % fragP->fr_var); } + address += offset; } break; @@ -1800,24 +2170,33 @@ relax_segment (segment_frag_root, segment) break; #ifndef WORKING_DOT_WORD - /* Broken words don't concern us yet */ + /* Broken words don't concern us yet. */ case rs_broken_word: break; #endif + case rs_leb128: + /* Initial guess is always 1; doing otherwise can result in + stable solutions that are larger than the minimum. */ + address += fragP->fr_offset = 1; + break; + + case rs_cfa: + address += eh_frame_estimate_size_before_relax (fragP); + break; + default: BAD_CASE (fragP->fr_type); break; - } /* switch(fr_type) */ - } /* for each frag in the segment */ + } + } /* Do relax(). */ { - long stretch; /* May be any size, 0 or negative. */ - /* Cumulative number of addresses we have */ - /* relaxed this pass. */ - /* We may have relaxed more than one address. */ - long stretched; /* Have we stretched on this pass? */ + long stretch; /* May be any size, 0 or negative. */ + /* Cumulative number of addresses we have relaxed this pass. + We may have relaxed more than one address. */ + long stretched; /* Have we stretched on this pass? */ /* This is 'cuz stretch may be zero, when, in fact some piece of code grew, and another shrank. If a branch instruction doesn't fit anymore, we could be scrod. */ @@ -1825,14 +2204,13 @@ relax_segment (segment_frag_root, segment) do { stretch = stretched = 0; + for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) { long growth = 0; - unsigned long was_address; - long offset; + addressT was_address; + offsetT offset; symbolS *symbolP; - long target; - long after; was_address = fragP->fr_address; address = fragP->fr_address += stretch; @@ -1841,7 +2219,7 @@ relax_segment (segment_frag_root, segment) switch (fragP->fr_type) { - case rs_fill: /* .fill never relaxes. */ + case rs_fill: /* .fill never relaxes. */ growth = 0; break; @@ -1868,10 +2246,10 @@ relax_segment (segment_frag_root, segment) if (lie->added) continue; - offset = (lie->add->sy_frag->fr_address + offset = (symbol_get_frag (lie->add)->fr_address + S_GET_VALUE (lie->add) + lie->addnum - - (lie->sub->sy_frag->fr_address + - (symbol_get_frag (lie->sub)->fr_address + S_GET_VALUE (lie->sub))); if (offset <= -32768 || offset >= 32767) { @@ -1879,7 +2257,7 @@ relax_segment (segment_frag_root, segment) { char buf[50]; sprint_value (buf, (addressT) lie->addnum); - as_warn (".word %s-%s+%s didn't fit", + as_warn (_(".word %s-%s+%s didn't fit"), S_GET_NAME (lie->add), S_GET_NAME (lie->sub), buf); @@ -1893,8 +2271,10 @@ relax_segment (segment_frag_root, segment) for (untruth = lie->next_broken_word; untruth && untruth->dispfrag == lie->dispfrag; untruth = untruth->next_broken_word) - if ((untruth->add->sy_frag == lie->add->sy_frag) - && S_GET_VALUE (untruth->add) == S_GET_VALUE (lie->add)) + if ((symbol_get_frag (untruth->add) + == symbol_get_frag (lie->add)) + && (S_GET_VALUE (untruth->add) + == S_GET_VALUE (lie->add))) { untruth->added = 2; untruth->use_jump = lie; @@ -1904,61 +2284,88 @@ relax_segment (segment_frag_root, segment) } break; - } /* case rs_broken_word */ + } /* case rs_broken_word */ #endif case rs_align: case rs_align_code: - growth = (relax_align ((relax_addressT) (address - + fragP->fr_fix), - (int) offset) - - relax_align ((relax_addressT) (was_address - + fragP->fr_fix), - (int) offset)); + { + addressT oldoff, newoff; + + oldoff = relax_align (was_address + fragP->fr_fix, + (int) offset); + newoff = relax_align (address + fragP->fr_fix, + (int) offset); + + if (fragP->fr_subtype != 0) + { + if (oldoff > fragP->fr_subtype) + oldoff = 0; + if (newoff > fragP->fr_subtype) + newoff = 0; + } + + growth = newoff - oldoff; + } break; case rs_org: - target = offset; + { + long target = offset; + long after; - if (symbolP) - { + if (symbolP) + { #if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) - know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) - || (S_GET_SEGMENT (symbolP) == SEG_DATA) - || (S_GET_SEGMENT (symbolP) == SEG_TEXT) - || S_GET_SEGMENT (symbolP) == SEG_BSS); - know (symbolP->sy_frag); - know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) - || (symbolP->sy_frag == &zero_address_frag)); -#endif - target += S_GET_VALUE (symbolP) - + symbolP->sy_frag->fr_address; - } /* if we have a symbol */ - - know (fragP->fr_next); - after = fragP->fr_next->fr_address; - growth = target - after; - if (growth < 0) - { - /* Growth may be negative, but variable part of frag - cannot have fewer than 0 chars. That is, we can't - .org backwards. */ - as_bad ("attempt to .org backwards ignored"); - growth = 0; - } + know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) + || (S_GET_SEGMENT (symbolP) == SEG_DATA) + || (S_GET_SEGMENT (symbolP) == SEG_TEXT) + || S_GET_SEGMENT (symbolP) == SEG_BSS); + know (symbolP->sy_frag); + know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) + || (symbolP->sy_frag == &zero_address_frag)); +#endif + target += (S_GET_VALUE (symbolP) + + symbol_get_frag (symbolP)->fr_address); + } /* if we have a symbol */ - growth -= stretch; /* This is an absolute growth factor */ - break; + know (fragP->fr_next); + after = fragP->fr_next->fr_address; + growth = target - after; + if (growth < 0) + { + /* Growth may be negative, but variable part of frag + cannot have fewer than 0 chars. That is, we can't + .org backwards. */ + as_bad_where (fragP->fr_file, fragP->fr_line, + _("attempt to .org backwards ignored")); + + /* We've issued an error message. Change the + frag to avoid cascading errors. */ + fragP->fr_type = rs_align; + fragP->fr_subtype = 0; + fragP->fr_offset = 0; + fragP->fr_fix = after - address; + growth = stretch; + } + + /* This is an absolute growth factor */ + growth -= stretch; + break; + } case rs_space: if (symbolP) { growth = S_GET_VALUE (symbolP); - if (symbolP->sy_frag != &zero_address_frag) - as_bad (".space specifies non-absolute value"); + if (symbol_get_frag (symbolP) != &zero_address_frag + || S_IS_COMMON (symbolP) + || ! S_IS_DEFINED (symbolP)) + as_bad_where (fragP->fr_file, fragP->fr_line, + _(".space specifies non-absolute value")); fragP->fr_symbol = 0; if (growth < 0) { - as_warn (".space or .fill with negative value, ignored"); + as_warn (_(".space or .fill with negative value, ignored")); growth = 0; } } @@ -1972,100 +2379,26 @@ relax_segment (segment_frag_root, segment) #else #ifdef TC_GENERIC_RELAX_TABLE /* The default way to relax a frag is to look through - md_relax_table. */ - { - const relax_typeS *this_type; - const relax_typeS *start_type; - relax_substateT next_state; - relax_substateT this_state; - long aim; - const relax_typeS *table = TC_GENERIC_RELAX_TABLE; - - this_state = fragP->fr_subtype; - start_type = this_type = table + this_state; - target = offset; - - if (symbolP) - { -#ifndef DIFF_EXPR_OK -#if !defined (MANY_SEGMENTS) && !defined (BFD_ASSEMBLER) - know ((S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) - || (S_GET_SEGMENT (symbolP) == SEG_DATA) - || (S_GET_SEGMENT (symbolP) == SEG_BSS) - || (S_GET_SEGMENT (symbolP) == SEG_TEXT)); -#endif - know (symbolP->sy_frag); -#endif - know (!(S_GET_SEGMENT (symbolP) == absolute_section) - || symbolP->sy_frag == &zero_address_frag); - target += - S_GET_VALUE (symbolP) - + symbolP->sy_frag->fr_address; - - /* If frag has yet to be reached on this pass, - assume it will move by STRETCH just as we did. - If this is not so, it will be because some frag - between grows, and that will force another pass. - - Beware zero-length frags. - - There should be a faster way to do this. */ - - if (symbolP->sy_frag->fr_address >= was_address - && is_dnrange (fragP, symbolP->sy_frag)) - { - target += stretch; - } - } - - aim = target - address - fragP->fr_fix; -#ifdef TC_PCREL_ADJUST - /* Currently only the ns32k family needs this */ - aim += TC_PCREL_ADJUST(fragP); -#else - /* This machine doesn't want to use pcrel_adjust. - In that case, pcrel_adjust should be zero. */ - assert (fragP->fr_pcrel_adjust == 0); + TC_GENERIC_RELAX_TABLE. */ + growth = relax_frag (fragP, stretch); +#endif /* TC_GENERIC_RELAX_TABLE */ #endif + break; - if (aim < 0) - { - /* Look backwards. */ - for (next_state = this_type->rlx_more; next_state;) - if (aim >= this_type->rlx_backward) - next_state = 0; - else - { - /* Grow to next state. */ - this_state = next_state; - this_type = table + this_state; - next_state = this_type->rlx_more; - } - } - else - { -#ifdef M68K_AIM_KLUDGE - M68K_AIM_KLUDGE (aim, this_state, this_type); -#endif - /* Look forwards. */ - for (next_state = this_type->rlx_more; next_state;) - if (aim <= this_type->rlx_forward) - next_state = 0; - else - { - /* Grow to next state. */ - this_state = next_state; - this_type = table + this_state; - next_state = this_type->rlx_more; - } - } + case rs_leb128: + { + valueT value; + int size; - growth = this_type->rlx_length - start_type->rlx_length; - if (growth != 0) - fragP->fr_subtype = this_state; + value = resolve_symbol_value (fragP->fr_symbol, 0); + size = sizeof_leb128 (value, fragP->fr_subtype); + growth = size - fragP->fr_offset; + fragP->fr_offset = size; } -#endif /* TC_GENERIC_RELAX_TABLE */ -#endif + break; + + case rs_cfa: + growth = eh_frame_relax_frag (fragP); break; default: @@ -2077,20 +2410,16 @@ relax_segment (segment_frag_root, segment) stretch += growth; stretched++; } - } /* For each frag in the segment. */ + } /* For each frag in the segment. */ } - while (stretched); /* Until nothing further to relax. */ - } /* do_relax */ + while (stretched); /* Until nothing further to relax. */ + } /* do_relax */ - /* - * We now have valid fr_address'es for each frag. - */ + /* We now have valid fr_address'es for each frag. */ - /* - * All fr_address's are correct, relative to their own segment. - * We have made all the fixS we will ever make. - */ -} /* relax_segment() */ + /* All fr_address's are correct, relative to their own segment. + We have made all the fixS we will ever make. */ +} #if defined (BFD_ASSEMBLER) || (!defined (BFD) && !defined (OBJ_VMS)) @@ -2112,7 +2441,7 @@ relax_segment (segment_frag_root, segment) static long fixup_segment (fixP, this_segment_type) register fixS *fixP; - segT this_segment_type; /* N_TYPE bits for segment. */ + segT this_segment_type; /* N_TYPE bits for segment. */ { long seg_reloc_count = 0; symbolS *add_symbolP; @@ -2124,7 +2453,7 @@ fixup_segment (fixP, this_segment_type) 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 @@ -2162,25 +2491,36 @@ fixup_segment (fixP, this_segment_type) plt = fixP->fx_plt; if (add_symbolP != NULL - && add_symbolP->sy_mri_common) + && symbol_mri_common_p (add_symbolP)) { know (add_symbolP->sy_value.X_op == O_symbol); add_number += S_GET_VALUE (add_symbolP); fixP->fx_offset = add_number; - add_symbolP = fixP->fx_addsy = add_symbolP->sy_value.X_add_symbol; + add_symbolP = fixP->fx_addsy = + symbol_get_value_expression (add_symbolP)->X_add_symbol; } if (add_symbolP) add_symbol_segment = S_GET_SEGMENT (add_symbolP); - + if (sub_symbolP) { - resolve_symbol_value (sub_symbolP); - if (!add_symbolP) + resolve_symbol_value (sub_symbolP, 1); + if (add_symbolP == NULL || add_symbol_segment == absolute_section) { - /* Its just -sym */ + if (add_symbolP != NULL) + { + add_number += S_GET_VALUE (add_symbolP); + add_symbolP = NULL; + fixP->fx_addsy = NULL; + } + + /* It's just -sym. */ if (S_GET_SEGMENT (sub_symbolP) == absolute_section) - add_number -= S_GET_VALUE (sub_symbolP); + { + add_number -= S_GET_VALUE (sub_symbolP); + fixP->fx_subsy = NULL; + } else if (pcrel && S_GET_SEGMENT (sub_symbolP) == this_segment_type) { @@ -2190,41 +2530,41 @@ fixup_segment (fixP, this_segment_type) else bad_sub_reloc: as_bad_where (fixP->fx_file, fixP->fx_line, - "Negative of non-absolute symbol %s", + _("Negative of non-absolute symbol %s"), S_GET_NAME (sub_symbolP)); } - else if ((S_GET_SEGMENT (sub_symbolP) == add_symbol_segment) - && (SEG_NORMAL (add_symbol_segment) - || (add_symbol_segment == absolute_section))) + else if (S_GET_SEGMENT (sub_symbolP) == add_symbol_segment + && SEG_NORMAL (add_symbol_segment)) { /* Difference of 2 symbols from same segment. Can't make difference of 2 undefineds: 'value' means - something different for N_UNDF. */ + something different for N_UNDF. */ #ifdef TC_I960 /* Makes no sense to use the difference of 2 arbitrary symbols as the target of a call instruction. */ if (fixP->fx_tcbit) as_bad_where (fixP->fx_file, fixP->fx_line, - "callj to difference of 2 symbols"); -#endif /* TC_I960 */ + _("callj to difference of 2 symbols")); +#endif /* TC_I960 */ add_number += S_GET_VALUE (add_symbolP) - S_GET_VALUE (sub_symbolP); add_symbolP = NULL; - pcrel = 0; /* No further pcrel processing. */ + pcrel = 0; /* No further pcrel processing. */ /* 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 (fixP)) + if (!TC_FORCE_RELOCATION_SECTION (fixP, this_segment_type)) { fixP->fx_pcrel = 0; fixP->fx_addsy = NULL; + fixP->fx_subsy = NULL; } } else { - /* Different segments in subtraction. */ + /* Different segments in subtraction. */ know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == absolute_section))); @@ -2233,15 +2573,17 @@ fixup_segment (fixP, this_segment_type) #ifdef DIFF_EXPR_OK else if (S_GET_SEGMENT (sub_symbolP) == this_segment_type -#if 0 /* Do this even if it's already described as pc-relative. For example, - on the m68k, an operand of "pc@(foo-.-2)" should address "foo" in a - pc-relative mode. */ +#if 0 + /* Do this even if it's already described as + pc-relative. For example, on the m68k, an + operand of "pc@(foo-.-2)" should address + "foo" in a pc-relative mode. */ && pcrel #endif ) { /* Make it pc-relative. */ - add_number += (md_pcrel_from (fixP) + add_number += (MD_PCREL_FROM_SECTION (fixP, this_segment_type) - S_GET_VALUE (sub_symbolP)); pcrel = 1; fixP->fx_pcrel = 1; @@ -2270,9 +2612,12 @@ fixup_segment (fixP, this_segment_type) char buf[50]; sprint_value (buf, fragP->fr_address + where); as_bad_where (fixP->fx_file, fixP->fx_line, - "Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %s.", + _("Subtraction of two symbols in different sections \"%s\" {%s section} - \"%s\" {%s section} at file address %s."), + S_GET_NAME (add_symbolP), + segment_name (S_GET_SEGMENT (add_symbolP)), + S_GET_NAME (sub_symbolP), segment_name (S_GET_SEGMENT (sub_symbolP)), - S_GET_NAME (sub_symbolP), buf); + buf); } } } @@ -2282,24 +2627,23 @@ fixup_segment (fixP, this_segment_type) if (add_symbol_segment == this_segment_type && pcrel && !plt && TC_RELOC_RTSYM_LOC_FIXUP (fixP)) { - /* - * This fixup was made when the symbol's segment was - * SEG_UNKNOWN, but it is now in the local segment. - * So we know how to do the address without relocation. - */ + /* This fixup was made when the symbol's segment was + SEG_UNKNOWN, but it is now in the local segment. + So we know how to do the address without relocation. */ #ifdef TC_I960 /* reloc_callj() may replace a 'call' with a 'calls' or a 'bal', in which cases it modifies *fixP as appropriate. In the case of a 'calls', no further work is required, and *fixP has been set up to make the rest of the code - below a no-op. */ + below a no-op. */ reloc_callj (fixP); -#endif /* TC_I960 */ +#endif /* TC_I960 */ add_number += S_GET_VALUE (add_symbolP); - add_number -= md_pcrel_from (fixP); - pcrel = 0; /* Lie. Don't want further pcrel processing. */ - + add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); + /* Lie. Don't want further pcrel processing. */ + pcrel = 0; + /* Let the target machine make the final determination as to whether or not a relocation will be needed to handle this fixup. */ @@ -2311,19 +2655,20 @@ fixup_segment (fixP, this_segment_type) } else { - if (add_symbol_segment == absolute_section) + if (add_symbol_segment == absolute_section + && ! pcrel) { #ifdef TC_I960 /* See comment about reloc_callj() above. */ reloc_callj (fixP); -#endif /* TC_I960 */ +#endif /* TC_I960 */ add_number += S_GET_VALUE (add_symbolP); /* 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 (fixP)) + + if (!TC_FORCE_RELOCATION (fixP)) { fixP->fx_addsy = NULL; add_symbolP = NULL; @@ -2339,31 +2684,38 @@ fixup_segment (fixP, this_segment_type) if ((int) fixP->fx_bit_fixP == 13) { /* This is a COBR instruction. They have only a - * 13-bit displacement and are only to be used - * for local branches: flag as error, don't generate - * relocation. - */ + 13-bit displacement and are only to be used + for local branches: flag as error, don't generate + relocation. */ as_bad_where (fixP->fx_file, fixP->fx_line, - "can't use COBR format with external label"); + _("can't use COBR format with external label")); fixP->fx_addsy = NULL; fixP->fx_done = 1; continue; - } /* COBR */ -#endif /* TC_I960 */ - + } /* COBR. */ +#endif /* TC_I960 */ + #ifdef OBJ_COFF #ifdef TE_I386AIX if (S_IS_COMMON (add_symbolP)) add_number += S_GET_VALUE (add_symbolP); -#endif /* TE_I386AIX */ -#endif /* OBJ_COFF */ +#endif /* TE_I386AIX */ +#endif /* OBJ_COFF */ ++seg_reloc_count; } else { seg_reloc_count++; -#if !defined (TC_I386) || !(defined (OBJ_ELF) || defined (OBJ_COFF)) +#if !(defined (TC_V850) && defined (OBJ_ELF)) +#if !(defined (TC_M68K) && defined (OBJ_ELF)) +#if !(defined (TC_ARM) && defined (OBJ_ELF)) +#if !(defined (TC_I960) && defined (OBJ_ELF)) +#if !defined (TC_I386) || !(defined (OBJ_ELF) || defined (OBJ_COFF)) || defined (TE_PE) add_number += S_GET_VALUE (add_symbolP); +#endif +#endif +#endif +#endif #endif } } @@ -2371,7 +2723,7 @@ fixup_segment (fixP, this_segment_type) if (pcrel) { - add_number -= md_pcrel_from (fixP); + add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment_type); if (add_symbolP == 0) { #ifndef BFD_ASSEMBLER @@ -2379,27 +2731,42 @@ fixup_segment (fixP, this_segment_type) #else fixP->fx_addsy = section_symbol (absolute_section); #endif - fixP->fx_addsy->sy_used_in_reloc = 1; + symbol_mark_used_in_reloc (fixP->fx_addsy); ++seg_reloc_count; } } + if (!fixP->fx_done) + { +#ifdef MD_APPLY_FIX3 + md_apply_fix3 (fixP, &add_number, this_segment_type); +#else +#ifdef BFD_ASSEMBLER + md_apply_fix (fixP, &add_number); +#else + md_apply_fix (fixP, add_number); +#endif +#endif + +#ifndef TC_HANDLES_FX_DONE + /* If the tc-* files haven't been converted, assume it's handling + it the old way, where a null fx_addsy means that the fix has + been applied completely, and no further work is needed. */ + if (fixP->fx_addsy == 0 && fixP->fx_pcrel == 0) + fixP->fx_done = 1; +#endif + } + if (!fixP->fx_bit_fixP && !fixP->fx_no_overflow && size > 0) { - valueT mask = 0; - if (size < sizeof (mask)) + if ((size_t) size < sizeof (valueT)) { - /* set all bits to one */ - mask--; - /* Technically, combining these produces an undefined result - if size is sizeof (valueT), though I think these two - half-way operations should both be defined. And the - compiler should be able to combine them if it's valid on - the host architecture. */ - mask <<= size * 4; - mask <<= size * 4; - if ((add_number & mask) != 0 - && (add_number & mask) != mask) + valueT mask; + + mask = 0; + mask--; /* Set all bits to one. */ + mask <<= 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); @@ -2408,9 +2775,9 @@ fixup_segment (fixP, this_segment_type) 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", + _("Value of %s too large for field of %d bytes at %s"), buf2, size, buf); - } /* generic error checking */ + } /* Generic error checking. */ } #ifdef WARN_SIGNED_OVERFLOW_WORD /* Warn if a .word value is too large when treated as a signed @@ -2420,40 +2787,21 @@ fixup_segment (fixP, this_segment_type) && 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", + _("Signed .word overflow; switch may be too large; %ld at 0x%lx"), (long) add_number, (unsigned long) (fragP->fr_address + where)); #endif - } /* not a bit fix */ - - if (!fixP->fx_done) - { -#ifdef MD_APPLY_FIX3 - md_apply_fix3 (fixP, &add_number, this_segment_type); -#else -#ifdef BFD_ASSEMBLER - md_apply_fix (fixP, &add_number); -#else - md_apply_fix (fixP, add_number); -#endif -#endif + } /* Not a bit fix. */ -#ifndef TC_HANDLES_FX_DONE - /* If the tc-* files haven't been converted, assume it's handling - it the old way, where a null fx_addsy means that the fix has - been applied completely, and no further work is needed. */ - if (fixP->fx_addsy == 0 && fixP->fx_pcrel == 0) - fixP->fx_done = 1; -#endif - } #ifdef TC_VALIDATE_FIX - skip: ; + skip: ATTRIBUTE_UNUSED_LABEL + ; #endif #ifdef DEBUG5 fprintf (stderr, "result:\n"); print_fixup (fixP); #endif - } /* For each fixS in this segment. */ + } /* For each fixS in this segment. */ TC_ADJUST_RELOC_COUNT (fixP, seg_reloc_count); return seg_reloc_count; @@ -2467,7 +2815,7 @@ number_to_chars_bigendian (buf, val, n) valueT val; int n; { - if (n > sizeof (val)|| n <= 0) + if ((size_t) n > sizeof (val) || n <= 0) abort (); while (n--) { @@ -2482,7 +2830,7 @@ number_to_chars_littleendian (buf, val, n) valueT val; int n; { - if (n > sizeof (val) || n <= 0) + if ((size_t) n > sizeof (val) || n <= 0) abort (); while (n--) { @@ -2491,9 +2839,15 @@ number_to_chars_littleendian (buf, val, n) } } -/* for debugging */ +void +write_print_statistics (file) + FILE *file; +{ + fprintf (file, "fixups: %d\n", n_fixups); +} + +/* For debugging. */ extern int indent_level; -extern void print_symbol_value_1 (); void print_fixup (fixp) @@ -2541,6 +2895,7 @@ print_fixup (fixp) fprintf (stderr, ">"); } fprintf (stderr, "\n"); +#ifdef TC_FIX_DATA_PRINT + TC_FIX_DATA_PRINT (stderr, fixp); +#endif } - -/* end of write.c */