diff options
Diffstat (limited to 'gas/write.c')
| -rw-r--r-- | gas/write.c | 1786 |
1 files changed, 945 insertions, 841 deletions
diff --git a/gas/write.c b/gas/write.c index d7d876d..4a754f4 100644 --- a/gas/write.c +++ b/gas/write.c @@ -1,19 +1,19 @@ /* write.c - emit .o file Copyright (C) 1986, 1987, 1990, 1991, 1992 Free Software Foundation, Inc. - + This file is part of GAS, the GNU Assembler. - + GAS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. - + GAS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 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, 675 Mass Ave, Cambridge, MA 02139, USA. */ @@ -53,113 +53,117 @@ char *next_object_file_charP; /* Tracks object file bytes. */ int magic_number_for_object_file = DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE; -static int is_dnrange PARAMS ((struct frag *f1, struct frag *f2)); -static long fixup_segment PARAMS ((fixS *fixP, segT this_segment_type)); +static int is_dnrange PARAMS ((struct frag * f1, struct frag * f2)); +static long fixup_segment PARAMS ((fixS * fixP, segT this_segment_type)); static relax_addressT relax_align PARAMS ((relax_addressT addr, long align)); -void relax_segment PARAMS ((struct frag *seg_frag_root, segT seg_type)); +void relax_segment PARAMS ((struct frag * seg_frag_root, segT seg_type)); /* * fix_new() * * Create a fixS in obstack 'notes'. */ -fixS *fix_new(frag, where, size, add_symbol, sub_symbol, offset, pcrel, r_type) -fragS *frag; /* Which frag? */ -int where; /* Where in that frag? */ -short int size; /* 1, 2, or 4 usually. */ -symbolS *add_symbol; /* X_add_symbol. */ -symbolS *sub_symbol; /* X_subtract_symbol. */ -long offset; /* X_add_number. */ -int pcrel; /* TRUE if PC-relative relocation. */ -int r_type; /* Relocation type */ +fixS * +fix_new (frag, where, size, add_symbol, sub_symbol, offset, pcrel, r_type) + fragS *frag; /* Which frag? */ + int where; /* Where in that frag? */ + short int size; /* 1, 2, or 4 usually. */ + symbolS *add_symbol; /* X_add_symbol. */ + symbolS *sub_symbol; /* X_subtract_symbol. */ + long offset; /* X_add_number. */ + int pcrel; /* TRUE if PC-relative relocation. */ + int r_type; /* Relocation type */ { - fixS *fixP; - - fixP = (fixS *) obstack_alloc(¬es, sizeof(fixS)); - - fixP->fx_frag = frag; - fixP->fx_where = where; - fixP->fx_size = size; - fixP->fx_addsy = add_symbol; - fixP->fx_subsy = sub_symbol; - fixP->fx_offset = offset; - fixP->fx_pcrel = pcrel; + fixS *fixP; + + fixP = (fixS *) obstack_alloc (¬es, sizeof (fixS)); + + fixP->fx_frag = frag; + fixP->fx_where = where; + fixP->fx_size = size; + fixP->fx_addsy = add_symbol; + fixP->fx_subsy = sub_symbol; + fixP->fx_offset = offset; + fixP->fx_pcrel = pcrel; #if defined(TC_SPARC) || defined(TC_A29K) || defined( NEED_FX_R_TYPE) - fixP->fx_r_type = r_type; + fixP->fx_r_type = r_type; #endif - /* JF these 'cuz of the NS32K stuff */ - fixP->fx_im_disp = 0; - fixP->fx_pcrel_adjust = 0; - fixP->fx_bsr = 0; - fixP->fx_bit_fixP = 0; - - /* usually, we want relocs sorted numerically, but while + /* JF these 'cuz of the NS32K stuff */ + fixP->fx_im_disp = 0; + fixP->fx_pcrel_adjust = 0; + fixP->fx_bsr = 0; + fixP->fx_bit_fixP = 0; + + /* 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. */ #ifdef REVERSE_SORT_RELOCS - - fixP->fx_next = *seg_fix_rootP; - *seg_fix_rootP = fixP; - + + fixP->fx_next = *seg_fix_rootP; + *seg_fix_rootP = fixP; + #else /* REVERSE_SORT_RELOCS */ - - fixP->fx_next = NULL; - - if (*seg_fix_tailP) - (*seg_fix_tailP)->fx_next = fixP; - else - *seg_fix_rootP = fixP; - *seg_fix_tailP = fixP; - + + fixP->fx_next = NULL; + + if (*seg_fix_tailP) + (*seg_fix_tailP)->fx_next = fixP; + else + *seg_fix_rootP = fixP; + *seg_fix_tailP = fixP; + #endif /* REVERSE_SORT_RELOCS */ - - fixP->fx_callj = 0; - return(fixP); -} /* fix_new() */ + + fixP->fx_callj = 0; + return (fixP); +} /* fix_new() */ #ifndef BFD -void remove_subsegs(head, seg, root, last) -frchainS *head; -int seg; -fragS **root; -fragS ** last; +void +remove_subsegs (head, seg, root, last) + frchainS *head; + int seg; + fragS **root; + fragS **last; { fragS dummy; - fragS * prev_frag = &dummy; + fragS *prev_frag = &dummy; *root = head->frch_root; - while (head && head->frch_seg == seg) - { - prev_frag->fr_next = head->frch_root; + while (head && head->frch_seg == seg) + { + prev_frag->fr_next = head->frch_root; - prev_frag = head->frch_last; - head = head->frch_next; - } + prev_frag = head->frch_last; + head = head->frch_next; + } *last = prev_frag; prev_frag->fr_next = 0; } -void write_object_file() + +void +write_object_file () { - register struct frchain * frchainP; /* Track along all frchains. */ - register fragS * fragP; /* Track along all frags. */ - register struct frchain * next_frchainP; - register fragS * * prev_fragPP; - unsigned int data_siz; - - long object_file_size; - + register struct frchain *frchainP; /* Track along all frchains. */ + register fragS *fragP; /* Track along all frags. */ + register struct frchain *next_frchainP; + register fragS **prev_fragPP; + unsigned int data_siz; + + long object_file_size; + #ifdef 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. */ - VMS_Check_For_Main(); + VMS_Check_For_Main (); #endif /* 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 @@ -167,9 +171,10 @@ void write_object_file() * length trivial. */ #define SUB_SEGMENT_ALIGN (2) - for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) { + for (frchainP = frchain_root; frchainP; frchainP = frchainP->frch_next) + { #ifdef VMS - /* + /* * Under VAX/VMS, the linker (and PSECT specifications) * take care of correctly aligning the segments. * Doing the alignment here (on initialized data) can @@ -177,136 +182,144 @@ void write_object_file() */ #undef SUB_SEGMENT_ALIGN #define SUB_SEGMENT_ALIGN ((frchainP->frch_seg != SEG_DATA) ? 2 : 0) -#endif /* VMS */ - subseg_new (frchainP->frch_seg, frchainP->frch_subseg); - frag_align (SUB_SEGMENT_ALIGN, NOP_OPCODE); - /* frag_align will have left a new frag. */ - /* Use this last frag for an empty ".fill". */ - /* +#endif /* VMS */ + subseg_new (frchainP->frch_seg, frchainP->frch_subseg); + frag_align (SUB_SEGMENT_ALIGN, 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 ); - /* know( frags . obstack_c_base == frags . obstack_c_next_free ); */ - /* Above shows we haven't left a half-completed object on obstack. */ - } /* walk the frag chain */ - - /* + frag_wane (frag_now); + frag_now->fr_fix = 0; + know (frag_now->fr_next == NULL); + /* know( frags . obstack_c_base == frags . obstack_c_next_free ); */ + /* Above shows we haven't left a half-completed object on obstack. */ + } /* walk the frag chain */ + + /* * From now on, we don't care about sub-segments. * Build one frag chain for each segment. Linked thru fr_next. * We know that there is at least 1 text frchain & at least 1 data * frchain. */ - remove_subsegs(frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag); - remove_subsegs(data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag); - remove_subsegs(bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag); - - /* + remove_subsegs (frchain_root, SEG_TEXT, &text_frag_root, &text_last_frag); + remove_subsegs (data0_frchainP, SEG_DATA, &data_frag_root, &data_last_frag); + remove_subsegs (bss0_frchainP, SEG_BSS, &bss_frag_root, &bss_last_frag); + + /* * We have two segments. If user gave -R flag, then we must put the * data frags into the text segment. Do this before relaxing so * we know to take advantage of -R and make shorter addresses. */ #ifndef OBJ_AOUT - if (flagseen[ 'R' ]) { - fixS *tmp; - - text_last_frag->fr_next = data_frag_root; - text_last_frag = data_last_frag; - data_last_frag = NULL; - data_frag_root = NULL; - if (text_fix_root) { - for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next) ;; - tmp->fx_next=data_fix_root; - text_fix_tail = data_fix_tail; - } else - text_fix_root=data_fix_root; - data_fix_root=NULL; + if (flagseen['R']) + { + fixS *tmp; + + text_last_frag->fr_next = data_frag_root; + text_last_frag = data_last_frag; + data_last_frag = NULL; + data_frag_root = NULL; + if (text_fix_root) + { + for (tmp = text_fix_root; tmp->fx_next; tmp = tmp->fx_next);; + tmp->fx_next = data_fix_root; + text_fix_tail = data_fix_tail; } -#endif - relax_segment(text_frag_root, SEG_TEXT); - relax_segment(data_frag_root, SEG_DATA); - relax_segment(bss_frag_root, SEG_BSS); - /* + else + text_fix_root = data_fix_root; + data_fix_root = NULL; + } +#endif + 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. */ - - 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); - - /* + + 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]. */ - if (data_frag_root) { - register relax_addressT slide; - - 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. */ + if (data_frag_root) + { + register relax_addressT slide; + + 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. */ #ifdef OBJ_BOUT #define RoundUp(N,S) (((N)+(S)-1)&-(S)) - /* For b.out: If the data section has a strict alignment + /* For b.out: If the data section has a strict alignment requirement, its load address in the .o file will be rounded up from the size of the text section. These two values are *not* the same! Similarly for the bss section.... */ - slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]); + slide = RoundUp (slide, 1 << section_alignment[SEG_DATA]); #endif - for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) { - fragP->fr_address += slide; - } /* for each data frag */ - - know(text_last_frag != 0); - text_last_frag->fr_next = data_frag_root; - } else { - H_SET_DATA_SIZE(&headers,0); - data_siz = 0; - } + for (fragP = data_frag_root; fragP; fragP = fragP->fr_next) + { + fragP->fr_address += slide; + } /* for each data frag */ + + know (text_last_frag != 0); + text_last_frag->fr_next = data_frag_root; + } + else + { + H_SET_DATA_SIZE (&headers, 0); + data_siz = 0; + } #ifdef OBJ_BOUT - /* See above comments on b.out data section address. */ - { - long bss_vma; - if (data_last_frag == 0) - bss_vma = H_GET_TEXT_SIZE (&headers); - else - bss_vma = data_last_frag->fr_address; - bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]); - bss_address_frag.fr_address = bss_vma; - } + /* See above comments on b.out data section address. */ + { + long bss_vma; + if (data_last_frag == 0) + bss_vma = H_GET_TEXT_SIZE (&headers); + else + bss_vma = data_last_frag->fr_address; + bss_vma = RoundUp (bss_vma, 1 << section_alignment[SEG_BSS]); + bss_address_frag.fr_address = bss_vma; + } #else - bss_address_frag.fr_address = (H_GET_TEXT_SIZE(&headers) + - H_GET_DATA_SIZE(&headers)); + bss_address_frag.fr_address = (H_GET_TEXT_SIZE (&headers) + + H_GET_DATA_SIZE (&headers)); + + /* Slide all the frags */ + if (bss_frag_root) + { + relax_addressT slide = bss_address_frag.fr_address + local_bss_counter; - /* Slide all the frags */ - if (bss_frag_root) + for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next) { - relax_addressT slide = bss_address_frag.fr_address + local_bss_counter; + fragP->fr_address += slide; + } /* for each bss frag */ + } - for (fragP = bss_frag_root; fragP; fragP = fragP->fr_next) - { - fragP->fr_address += slide; - } /* for each bss frag */ - } +#endif + if (bss_last_frag) + { + local_bss_counter += bss_last_frag->fr_address - bss_frag_root->fr_address; + } + H_SET_BSS_SIZE (&headers, local_bss_counter); -#endif -if(bss_last_frag) { -local_bss_counter += bss_last_frag->fr_address - bss_frag_root->fr_address; -} - H_SET_BSS_SIZE(&headers,local_bss_counter ); - - /* + /* * * Crawl the symbol chain. * @@ -327,310 +340,326 @@ local_bss_counter += bss_last_frag->fr_address - bss_frag_root->fr_address; * Put this info into the headers as appropriate. * */ - know(zero_address_frag.fr_address == 0); - string_byte_count = sizeof(string_byte_count); - - obj_crawl_symbol_chain(&headers); - - if (string_byte_count == sizeof(string_byte_count)) { - string_byte_count = 0; - } /* if no strings, then no count. */ - - H_SET_STRING_SIZE(&headers, string_byte_count); - - /* + know (zero_address_frag.fr_address == 0); + string_byte_count = sizeof (string_byte_count); + + obj_crawl_symbol_chain (&headers); + + if (string_byte_count == sizeof (string_byte_count)) + { + string_byte_count = 0; + } /* if no strings, then no count. */ + + 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(); */ - subseg_change(SEG_TEXT, 0); - - for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) { - switch (fragP->fr_type) { - case rs_align: - case rs_org: + subseg_change (SEG_TEXT, 0); + + for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) + { + switch (fragP->fr_type) + { + case rs_align: + case rs_org: #ifdef HANDLE_ALIGN - HANDLE_ALIGN (fragP); + HANDLE_ALIGN (fragP); #endif - fragP->fr_type = rs_fill; - know(fragP->fr_var == 1); - know(fragP->fr_next != NULL); - - fragP->fr_offset = (fragP->fr_next->fr_address - - fragP->fr_address - - fragP->fr_fix); - break; - - case rs_fill: - break; - - case rs_machine_dependent: - md_convert_frag(&headers, fragP); - - know((fragP->fr_next == NULL) || ((fragP->fr_next->fr_address - fragP->fr_address) == fragP->fr_fix)); - - /* + fragP->fr_type = rs_fill; + know (fragP->fr_var == 1); + know (fragP->fr_next != NULL); + + fragP->fr_offset = (fragP->fr_next->fr_address + - fragP->fr_address + - fragP->fr_fix); + break; + + case rs_fill: + break; + + case rs_machine_dependent: + md_convert_frag (&headers, fragP); + + know ((fragP->fr_next == NULL) || ((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. */ - frag_wane(fragP); - break; - + frag_wane (fragP); + break; + #ifndef WORKING_DOT_WORD - case rs_broken_word: { - struct broken_word *lie; - extern md_short_jump_size; - extern md_long_jump_size; - - if (fragP->fr_subtype) { - fragP->fr_fix+=md_short_jump_size; - for (lie=(struct broken_word *)(fragP->fr_symbol);lie && lie->dispfrag==fragP;lie=lie->next_broken_word) - if (lie->added==1) - fragP->fr_fix+=md_long_jump_size; - } - frag_wane(fragP); - } - break; + case rs_broken_word: + { + struct broken_word *lie; + extern md_short_jump_size; + extern md_long_jump_size; + + if (fragP->fr_subtype) + { + fragP->fr_fix += md_short_jump_size; + for (lie = (struct broken_word *) (fragP->fr_symbol); lie && lie->dispfrag == fragP; lie = lie->next_broken_word) + if (lie->added == 1) + fragP->fr_fix += md_long_jump_size; + } + frag_wane (fragP); + } + break; #endif - - default: - BAD_CASE( fragP->fr_type ); - break; - } /* switch (fr_type) */ - if (!((fragP->fr_next == NULL) + default: + BAD_CASE (fragP->fr_type); + break; + } /* switch (fr_type) */ + + if (!((fragP->fr_next == NULL) #ifdef OBJ_BOUT - || (fragP->fr_next == data_frag_root) + || (fragP->fr_next == data_frag_root) #endif - || ((fragP->fr_next->fr_address - fragP->fr_address) - == (fragP->fr_fix + (fragP->fr_offset * fragP->fr_var))))) - { - fprintf (stderr, "assertion failed: file `%s', line %d\n", - __FILE__, __LINE__ - 4); - exit (1); - } - } /* for each frag. */ - + || ((fragP->fr_next->fr_address - fragP->fr_address) + == (fragP->fr_fix + (fragP->fr_offset * fragP->fr_var))))) + { + fprintf (stderr, "assertion failed: file `%s', line %d\n", + __FILE__, __LINE__ - 4); + exit (1); + } + } /* for each frag. */ + #ifndef WORKING_DOT_WORD + { + struct broken_word *lie; + struct broken_word **prevP; + + prevP = &broken_words; + for (lie = broken_words; lie; lie = lie->next_broken_word) + if (!lie->added) { - struct broken_word *lie; - struct broken_word **prevP; - - prevP= &broken_words; - for (lie=broken_words; lie; lie=lie->next_broken_word) - if (!lie->added) { #ifdef TC_NS32K - fix_new_ns32k(lie->frag, - lie->word_goes_here - lie->frag->fr_literal, - 2, - lie->add, - lie->sub, - lie->addnum, - 0, 0, 2, 0, 0); + fix_new_ns32k (lie->frag, + lie->word_goes_here - lie->frag->fr_literal, + 2, + lie->add, + lie->sub, + lie->addnum, + 0, 0, 2, 0, 0); #else # if defined(TC_SPARC) || defined(TC_A29K) || defined(NEED_FX_R_TYPE) - fix_new( lie->frag, lie->word_goes_here - lie->frag->fr_literal, - 2, lie->add, - lie->sub, lie->addnum, - 0, NO_RELOC); + fix_new (lie->frag, lie->word_goes_here - lie->frag->fr_literal, + 2, lie->add, + lie->sub, lie->addnum, + 0, NO_RELOC); # else - fix_new( lie->frag, lie->word_goes_here - lie->frag->fr_literal, - 2, lie->add, - lie->sub, lie->addnum, - 0, 0); + fix_new (lie->frag, lie->word_goes_here - lie->frag->fr_literal, + 2, lie->add, + lie->sub, lie->addnum, + 0, 0); -# endif /* tc_sparc|tc_a29k|need_fx_r_type */ +# endif /* tc_sparc|tc_a29k|need_fx_r_type */ #endif /* TC_NS32K */ - /* md_number_to_chars(lie->word_goes_here, + /* md_number_to_chars(lie->word_goes_here, S_GET_VALUE(lie->add) + lie->addnum - S_GET_VALUE(lie->sub), 2); */ - *prevP=lie->next_broken_word; - } else - prevP= &(lie->next_broken_word); - - for (lie=broken_words;lie;) { - struct broken_word *untruth; - char *table_ptr; - long table_addr; - long from_addr, - to_addr; - int n, - m; - - extern md_short_jump_size; - extern md_long_jump_size; - - 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) - if (untruth->added==1) - n++; - - table_ptr=lie->dispfrag->fr_opcode; - 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); - 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) { - if (lie->added==2) - continue; - /* Patch the jump table */ - /* This is the offset from ??? to table_ptr+0 */ - to_addr = table_addr - - S_GET_VALUE(lie->sub); - 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) { - 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 */ - from_addr=table_addr; - to_addr=S_GET_VALUE(lie->add) + lie->addnum; - 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; - } - } + *prevP = lie->next_broken_word; } + else + prevP = &(lie->next_broken_word); + + for (lie = broken_words; lie;) + { + struct broken_word *untruth; + char *table_ptr; + long table_addr; + long from_addr, to_addr; + int n, m; + + extern md_short_jump_size; + extern md_long_jump_size; + + 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) + if (untruth->added == 1) + n++; + + table_ptr = lie->dispfrag->fr_opcode; + 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); + 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) + { + if (lie->added == 2) + continue; + /* Patch the jump table */ + /* This is the offset from ??? to table_ptr+0 */ + to_addr = table_addr + - S_GET_VALUE (lie->sub); + 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) + { + 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 */ + from_addr = table_addr; + to_addr = S_GET_VALUE (lie->add) + lie->addnum; + 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 */ - + #ifndef VMS - { /* not vms */ - /* + { /* not vms */ + /* * 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); - trsize = md_reloc_size * fixup_segment (text_fix_root, - SEG_TEXT); - subseg_change (SEG_DATA, 0); - 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 */ - H_SET_MAGIC_NUMBER(&headers, magic_number_for_object_file); - H_SET_ENTRY_POINT(&headers, 0); - - obj_pre_write_hook(&headers); /* extra coff stuff */ - if ((had_warnings() && flagseen['Z']) - || had_errors() > 0) { - if (flagseen['Z']) { - as_warn("%d error%s, %d warning%s, generating bad object file.\n", - had_errors(), had_errors() == 1 ? "" : "s", - had_warnings(), had_warnings() == 1 ? "" : "s"); - } else { - as_fatal("%d error%s, %d warning%s, no object file generated.\n", - had_errors(), had_errors() == 1 ? "" : "s", - had_warnings(), had_warnings() == 1 ? "" : "s"); - } /* on want output */ - } /* on error condition */ - - object_file_size = H_GET_FILE_SIZE(&headers); - next_object_file_charP = the_object_file = xmalloc(object_file_size); - - output_file_create(out_file_name); - - obj_header_append(&next_object_file_charP, &headers); - - know((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE(&headers)); - - /* + int trsize, drsize; + + subseg_change (SEG_TEXT, 0); + trsize = md_reloc_size * fixup_segment (text_fix_root, + SEG_TEXT); + subseg_change (SEG_DATA, 0); + 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 */ + H_SET_MAGIC_NUMBER (&headers, magic_number_for_object_file); + H_SET_ENTRY_POINT (&headers, 0); + + obj_pre_write_hook (&headers); /* extra coff stuff */ + if ((had_warnings () && flagseen['Z']) + || had_errors () > 0) + { + if (flagseen['Z']) + { + as_warn ("%d error%s, %d warning%s, generating bad object file.\n", + had_errors (), had_errors () == 1 ? "" : "s", + had_warnings (), had_warnings () == 1 ? "" : "s"); + } + else + { + as_fatal ("%d error%s, %d warning%s, no object file generated.\n", + had_errors (), had_errors () == 1 ? "" : "s", + had_warnings (), had_warnings () == 1 ? "" : "s"); + } /* on want output */ + } /* on error condition */ + + object_file_size = H_GET_FILE_SIZE (&headers); + next_object_file_charP = the_object_file = xmalloc (object_file_size); + + output_file_create (out_file_name); + + obj_header_append (&next_object_file_charP, &headers); + + know ((next_object_file_charP - the_object_file) == H_GET_HEADER_SIZE (&headers)); + + /* * Emit code. */ - for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) { - register long count; - register char *fill_literal; - register long fill_size; - - know(fragP->fr_type == rs_fill); - 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))); - - /* + for (fragP = text_frag_root; fragP; fragP = fragP->fr_next) + { + register long count; + register char *fill_literal; + register long fill_size; + + know (fragP->fr_type == rs_fill); + 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))); + + /* * 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))); + 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 + /* 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); + 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); + 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))); - - /* + + 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))); - - /* + 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. */ - 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))); - - /* + 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. */ - - if (string_byte_count > 0) { - obj_emit_strings(&next_object_file_charP); - } /* only if we have a string table */ - - /* 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) + H_GET_STRING_SIZE(&headers))); + + if (string_byte_count > 0) + { + obj_emit_strings (&next_object_file_charP); + } /* only if we have a string table */ + + /* 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) + H_GET_STRING_SIZE(&headers))); */ - /* know(next_object_file_charP == the_object_file + object_file_size);*/ - + /* know(next_object_file_charP == the_object_file + object_file_size);*/ + #ifdef BFD_HEADERS - bfd_seek(stdoutput, 0, 0); - bfd_write(the_object_file, 1, object_file_size, stdoutput); + bfd_seek (stdoutput, 0, 0); + bfd_write (the_object_file, 1, object_file_size, stdoutput); #else - - /* Write the data to the file */ - output_file_append(the_object_file,object_file_size,out_file_name); + + /* Write the data to the file */ + output_file_append (the_object_file, object_file_size, out_file_name); #endif - - output_file_close(out_file_name); - } /* non vms output */ -#else /* VMS */ - /* + + output_file_close (out_file_name); + } /* non vms output */ +#else /* VMS */ + /* * Now do the VMS-dependent part of writing the object file */ - VMS_write_object_file(text_siz, data_siz, text_frag_root, data_frag_root); -#endif /* VMS */ -} /* write_object_file() */ + VMS_write_object_file (text_siz, data_siz, text_frag_root, data_frag_root); +#endif /* VMS */ +} /* write_object_file() */ + #else #endif @@ -649,203 +678,217 @@ local_bss_counter += bss_last_frag->fr_address - bss_frag_root->fr_address; -void relax_segment(segment_frag_root, segment) -struct frag * segment_frag_root; -segT segment; /* SEG_DATA or SEG_TEXT */ +void +relax_segment (segment_frag_root, segment) + struct frag *segment_frag_root; + segT segment; /* SEG_DATA or SEG_TEXT */ { - register struct frag * fragP; - register relax_addressT address; -#ifndef MANY_SEGMENTS - know(segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS); + register struct frag *fragP; + register relax_addressT address; +#ifndef MANY_SEGMENTS + know (segment == SEG_DATA || segment == SEG_TEXT || segment == SEG_BSS); #endif - /* In case md_estimate_size_before_relax() wants to make fixSs. */ - subseg_change(segment, 0); - - /* + /* 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) * fr_address. */ - address = 0; - for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) { - fragP->fr_address = address; - address += fragP->fr_fix; - - switch (fragP->fr_type) { - case rs_fill: - address += fragP->fr_offset * fragP->fr_var ; - break; - - case rs_align: - address += relax_align(address, fragP->fr_offset); - break; - - case rs_org: - /* + address = 0; + for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) + { + fragP->fr_address = address; + address += fragP->fr_fix; + + switch (fragP->fr_type) + { + case rs_fill: + address += fragP->fr_offset * fragP->fr_var; + break; + + case rs_align: + address += relax_align (address, fragP->fr_offset); + break; + + case rs_org: + /* * Assume .org is nugatory. It will grow with 1st * relax. */ - break; - - case rs_machine_dependent: - address += md_estimate_size_before_relax(fragP, segment); - break; - + break; + + case rs_machine_dependent: + address += md_estimate_size_before_relax (fragP, segment); + break; + #ifndef WORKING_DOT_WORD - /* Broken words don't concern us yet */ - case rs_broken_word: - break; + /* Broken words don't concern us yet */ + case rs_broken_word: + break; #endif - - default: - BAD_CASE(fragP->fr_type); - break; - } /* switch(fr_type) */ - } /* for each frag in the segment */ - - /* + + default: + BAD_CASE (fragP->fr_type); + break; + } /* switch(fr_type) */ + } /* for each frag in the segment */ + + /* * Do relax(). */ - { - register 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. */ - register long stretched; /* Have we stretched on this pass? */ - /* This is 'cuz stretch may be zero, when, + { + register 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. */ + register 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 */ - - do { - stretch = stretched = 0; - for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) { - register long growth = 0; - register unsigned long was_address; - /* register long var; */ - register long offset; - register symbolS *symbolP; - register long target; - register long after; - register long aim; - - was_address = fragP->fr_address; - address = fragP->fr_address += stretch; - symbolP = fragP->fr_symbol; - offset = fragP->fr_offset; - /* var = fragP->fr_var; */ - - switch (fragP->fr_type) { - case rs_fill: /* .fill never relaxes. */ - growth = 0; - break; - + + do + { + stretch = stretched = 0; + for (fragP = segment_frag_root; fragP; fragP = fragP->fr_next) + { + register long growth = 0; + register unsigned long was_address; + /* register long var; */ + register long offset; + register symbolS *symbolP; + register long target; + register long after; + register long aim; + + was_address = fragP->fr_address; + address = fragP->fr_address += stretch; + symbolP = fragP->fr_symbol; + offset = fragP->fr_offset; + /* var = fragP->fr_var; */ + + switch (fragP->fr_type) + { + case rs_fill: /* .fill never relaxes. */ + growth = 0; + break; + #ifndef WORKING_DOT_WORD - /* JF: This is RMS's idea. I do *NOT* want to be blamed + /* JF: This is RMS's idea. I do *NOT* want to be blamed for it I do not want to write it. I do not want to have anything to do with it. This is not the proper way to implement this misfeature. */ - case rs_broken_word: { - struct broken_word *lie; - struct broken_word *untruth; - extern int md_short_jump_size; - extern int md_long_jump_size; - - /* Yes this is ugly (storing the broken_word pointer + case rs_broken_word: + { + struct broken_word *lie; + struct broken_word *untruth; + extern int md_short_jump_size; + extern int md_long_jump_size; + + /* Yes this is ugly (storing the broken_word pointer in the symbol slot). Still, this whole chunk of code is ugly, and I don't feel like doing anything about it. Think of it as stubbornness in action */ - growth=0; - for (lie=(struct broken_word *)(fragP->fr_symbol); - lie && lie->dispfrag==fragP; - lie=lie->next_broken_word) { - - if (lie->added) - continue; - - offset= lie->add->sy_frag->fr_address+ S_GET_VALUE(lie->add) + lie->addnum - - (lie->sub->sy_frag->fr_address+ S_GET_VALUE(lie->sub)); - if (offset<=-32768 || offset>=32767) { - if (flagseen['K']) - as_warn(".word %s-%s+%ld didn't fit", - S_GET_NAME(lie->add), - S_GET_NAME(lie->sub), - lie->addnum); - lie->added=1; - if (fragP->fr_subtype==0) { - fragP->fr_subtype++; - growth+=md_short_jump_size; - } - 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)) { - untruth->added=2; - untruth->use_jump=lie; - } - growth+=md_long_jump_size; - } - } - - break; - } /* case rs_broken_word */ + growth = 0; + for (lie = (struct broken_word *) (fragP->fr_symbol); + lie && lie->dispfrag == fragP; + lie = lie->next_broken_word) + { + + if (lie->added) + continue; + + offset = lie->add->sy_frag->fr_address + S_GET_VALUE (lie->add) + lie->addnum - + (lie->sub->sy_frag->fr_address + S_GET_VALUE (lie->sub)); + if (offset <= -32768 || offset >= 32767) + { + if (flagseen['K']) + as_warn (".word %s-%s+%ld didn't fit", + S_GET_NAME (lie->add), + S_GET_NAME (lie->sub), + lie->addnum); + lie->added = 1; + if (fragP->fr_subtype == 0) + { + fragP->fr_subtype++; + growth += md_short_jump_size; + } + 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)) + { + untruth->added = 2; + untruth->use_jump = lie; + } + growth += md_long_jump_size; + } + } + + break; + } /* case rs_broken_word */ #endif - case rs_align: - growth = relax_align((relax_addressT) (address + fragP->fr_fix), offset) - - relax_align((relax_addressT) (was_address + fragP->fr_fix), offset); - break; - - case rs_org: - target = offset; - - if (symbolP) { + case rs_align: + growth = relax_align ((relax_addressT) (address + fragP->fr_fix), offset) + - relax_align ((relax_addressT) (was_address + fragP->fr_fix), offset); + break; + + case rs_org: + target = offset; + + if (symbolP) + { #ifdef MANY_SEGMENTS #else - 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)); + 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 ) > 0) ? (target - after) : 0; - /* Growth may be -ve, but variable part */ - /* of frag cannot have < 0 chars. */ - /* That is, we can't .org backwards. */ - - growth -= stretch; /* This is an absolute growth factor */ - break; - - case rs_machine_dependent: { - register const relax_typeS * this_type; - register const relax_typeS * start_type; - register relax_substateT next_state; - register relax_substateT this_state; - - start_type = this_type = md_relax_table + (this_state = fragP->fr_subtype); - target = offset; - - if (symbolP) { + 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) > 0) ? (target - after) : 0; + /* Growth may be -ve, but variable part */ + /* of frag cannot have < 0 chars. */ + /* That is, we can't .org backwards. */ + + growth -= stretch; /* This is an absolute growth factor */ + break; + + case rs_machine_dependent: + { + register const relax_typeS *this_type; + register const relax_typeS *start_type; + register relax_substateT next_state; + register relax_substateT this_state; + + start_type = this_type = md_relax_table + (this_state = fragP->fr_subtype); + target = offset; + + if (symbolP) + { #ifndef MANY_SEGMENTS - 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)); + 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); - know(!(S_GET_SEGMENT(symbolP) == SEG_ABSOLUTE) || 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, + know (symbolP->sy_frag); + know (!(S_GET_SEGMENT (symbolP) == SEG_ABSOLUTE) || 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. */ - - /* JF was just address */ - /* JF also added is_dnrange hack */ - /* There's gotta be a better/faster/etc way + + /* JF was just address */ + /* JF also added is_dnrange hack */ + /* There's gotta be a better/faster/etc way to do this. . . */ - /* gnu@cygnus.com: I changed this from > to >= + /* gnu@cygnus.com: I changed this from > to >= because I ran into a zero-length frag (fr_fix=0) which was created when the obstack needed a new chunk JUST AFTER the opcode of a branch. Since @@ -862,85 +905,100 @@ segT segment; /* SEG_DATA or SEG_TEXT */ assembled on other machines, which is how I found it. You might want to think about what other places have trouble with zero length frags... */ - - if (symbolP->sy_frag->fr_address >= was_address - && is_dnrange(fragP,symbolP->sy_frag)) { - target += stretch; - } /* */ - - } /* if there's a symbol attached */ - - aim = target - address - fragP->fr_fix; - /* The displacement is affected by the instruction size + + if (symbolP->sy_frag->fr_address >= was_address + && is_dnrange (fragP, symbolP->sy_frag)) + { + target += stretch; + } /* */ + + } /* if there's a symbol attached */ + + aim = target - address - fragP->fr_fix; + /* The displacement is affected by the instruction size * for the 32k architecture. I think we ought to be able * to add fragP->fr_pcrel_adjust in all cases (it should be * zero if not used), but just in case it breaks something * else we'll put this inside #ifdef NS32K ... #endif */ #ifdef TC_NS32K - aim += fragP->fr_pcrel_adjust; + aim += fragP->fr_pcrel_adjust; #endif /* TC_NS32K */ - - 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_type = md_relax_table + (this_state = next_state); - next_state = this_type->rlx_more; - } - } - } else { + + 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_type = md_relax_table + (this_state = next_state); + next_state = this_type->rlx_more; + } + } + } + else + { #ifdef DONTDEF - /* JF these next few lines of code are for the mc68020 which can't handle short + /* JF these next few lines of code are for the mc68020 which can't handle short offsets of zero in branch instructions. What a kludge! */ - if (aim==0 && this_state==(1<<2+0)) { /* FOO hard encoded from m.c */ - aim=this_type->rlx_forward+1; /* Force relaxation into word mode */ - } + if (aim == 0 && this_state == (1 << 2 + 0)) + { /* FOO hard encoded from m.c */ + aim = this_type->rlx_forward + 1; /* Force relaxation into word mode */ + } #endif #ifdef M68K_AIM_KLUDGE - M68K_AIM_KLUDGE(aim, this_state, this_type); + M68K_AIM_KLUDGE (aim, this_state, this_type); #endif - /* JF end of 68020 code */ - /* 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_type = md_relax_table + (this_state = next_state); - next_state = this_type->rlx_more; - } - } - } - - if ((growth = this_type->rlx_length - start_type->rlx_length) != 0) - fragP->fr_subtype = this_state; - - break; - } /* case rs_machine_dependent */ - - default: - BAD_CASE( fragP->fr_type ); - break; - } - if (growth) { - stretch += growth; - stretched++; - } - } /* For each frag in the segment. */ - } while (stretched); /* Until nothing further to relax. */ - } /* do_relax */ - - /* + /* JF end of 68020 code */ + /* 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_type = md_relax_table + (this_state = next_state); + next_state = this_type->rlx_more; + } + } + } + + if ((growth = this_type->rlx_length - start_type->rlx_length) != 0) + fragP->fr_subtype = this_state; + + break; + } /* case rs_machine_dependent */ + + default: + BAD_CASE (fragP->fr_type); + break; + } + if (growth) + { + stretch += growth; + stretched++; + } + } /* For each frag in the segment. */ + } + while (stretched); /* Until nothing further to relax. */ + } /* do_relax */ + + /* * 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() */ +} /* relax_segment() */ /* * Relax_align. Advance location counter to next address that has 'alignment' @@ -949,260 +1007,304 @@ segT segment; /* SEG_DATA or SEG_TEXT */ /* How many addresses does the .align take? */ static relax_addressT -relax_align(address, alignment) - register relax_addressT address; /* Address now. */ - register long alignment; /* Alignment (binary). */ +relax_align (address, alignment) + register relax_addressT address; /* Address now. */ + register long alignment; /* Alignment (binary). */ { relax_addressT mask; relax_addressT new_address; - mask = ~ ( (~0) << alignment ); - new_address = (address + mask) & (~ mask); + mask = ~((~0) << alignment); + new_address = (address + mask) & (~mask); if (linkrelax) /* We must provide lots of padding, so the linker can discard it when needed. The linker will not add extra space, ever. */ new_address += (1 << alignment); return (new_address - address); -} /* relax_align() */ +} /* relax_align() */ /* fixup_segment() - + Go through all the fixS's in a segment and see which ones can be handled now. (These consist of fixS where we have since discovered the value of a symbol, or the address of the frag involved.) For each one, call md_apply_fix to put the fix into the frag data. - + Result is a count of how many relocation structs will be needed to handle the remaining fixS's that we couldn't completely handle here. These will be output later by emit_relocations(). */ static long -fixup_segment(fixP, this_segment_type) +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. */ { - register long seg_reloc_count; - register symbolS *add_symbolP; - register symbolS *sub_symbolP; - register long add_number; - register int size; - register char *place; - register long where; - register char pcrel; - register fragS *fragP; - register segT add_symbol_segment = SEG_ABSOLUTE; - - /* FIXME: remove this line */ /* fixS *orig = fixP; */ - seg_reloc_count = 0; + register long seg_reloc_count; + register symbolS *add_symbolP; + register symbolS *sub_symbolP; + register long add_number; + register int size; + register char *place; + register long where; + register char pcrel; + register fragS *fragP; + register segT add_symbol_segment = SEG_ABSOLUTE; + + /* FIXME: remove this line *//* fixS *orig = fixP; */ + seg_reloc_count = 0; #ifdef TC_I960 - /* If the linker is doing the relaxing, we must not do any fixups */ - if (linkrelax) { - for ( ; fixP ; fixP = fixP->fx_next) { - seg_reloc_count++; - } + /* If the linker is doing the relaxing, we must not do any fixups */ + if (linkrelax) + { + for (; fixP; fixP = fixP->fx_next) + { + seg_reloc_count++; } - else + } + else #endif - for ( ; fixP; fixP = fixP->fx_next) { - fragP = fixP->fx_frag; - know(fragP); - where = fixP->fx_where; - place = fragP->fr_literal + where; - size = fixP->fx_size; - add_symbolP = fixP->fx_addsy; + for (; fixP; fixP = fixP->fx_next) + { + 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_I960 - if (fixP->fx_callj && TC_S_IS_CALLNAME(add_symbolP)) { - /* Relocation should be done via the + if (fixP->fx_callj && TC_S_IS_CALLNAME (add_symbolP)) + { + /* Relocation should be done via the associated 'bal' entry point symbol. */ - - if (!TC_S_IS_BALNAME(tc_get_bal_of_call(add_symbolP))) { - as_bad("No 'bal' entry point for leafproc %s", - S_GET_NAME(add_symbolP)); - continue; - } - fixP->fx_addsy = add_symbolP = tc_get_bal_of_call(add_symbolP); - } /* callj relocation */ + + if (!TC_S_IS_BALNAME (tc_get_bal_of_call (add_symbolP))) + { + as_bad ("No 'bal' entry point for leafproc %s", + S_GET_NAME (add_symbolP)); + continue; + } + fixP->fx_addsy = add_symbolP = tc_get_bal_of_call (add_symbolP); + } /* callj relocation */ #endif - sub_symbolP = fixP->fx_subsy; - add_number = fixP->fx_offset; - pcrel = fixP->fx_pcrel; - - if (add_symbolP) { - add_symbol_segment = S_GET_SEGMENT(add_symbolP); - } /* if there is an addend */ - - if (sub_symbolP) { - if (!add_symbolP) { - /* Its just -sym */ - if (S_GET_SEGMENT(sub_symbolP) != SEG_ABSOLUTE) { - as_bad("Negative of non-absolute symbol %s", S_GET_NAME(sub_symbolP)); - } /* not absolute */ - - add_number -= S_GET_VALUE(sub_symbolP); - - /* if sub_symbol is in the same segment that add_symbol + sub_symbolP = fixP->fx_subsy; + add_number = fixP->fx_offset; + pcrel = fixP->fx_pcrel; + + if (add_symbolP) + { + add_symbol_segment = S_GET_SEGMENT (add_symbolP); + } /* if there is an addend */ + + if (sub_symbolP) + { + if (!add_symbolP) + { + /* Its just -sym */ + if (S_GET_SEGMENT (sub_symbolP) != SEG_ABSOLUTE) + { + as_bad ("Negative of non-absolute symbol %s", S_GET_NAME (sub_symbolP)); + } /* not absolute */ + + add_number -= S_GET_VALUE (sub_symbolP); + + /* if sub_symbol is in the same segment that add_symbol and add_symbol is either in DATA, TEXT, BSS or ABSOLUTE */ - } else if ((S_GET_SEGMENT(sub_symbolP) == add_symbol_segment) - && (SEG_NORMAL(add_symbol_segment) - || (add_symbol_segment == SEG_ABSOLUTE))) { - /* Difference of 2 symbols from same segment. */ - /* Can't make difference of 2 undefineds: 'value' means */ - /* something different for N_UNDF. */ + } + else if ((S_GET_SEGMENT (sub_symbolP) == add_symbol_segment) + && (SEG_NORMAL (add_symbol_segment) + || (add_symbol_segment == SEG_ABSOLUTE))) + { + /* Difference of 2 symbols from same segment. */ + /* Can't make difference of 2 undefineds: 'value' means */ + /* something different for N_UNDF. */ #ifdef TC_I960 - /* Makes no sense to use the difference of 2 arbitrary symbols + /* Makes no sense to use the difference of 2 arbitrary symbols * as the target of a call instruction. */ - if (fixP->fx_callj) { - as_bad("callj to difference of 2 symbols"); - } -#endif /* TC_I960 */ - add_number += S_GET_VALUE(add_symbolP) - - S_GET_VALUE(sub_symbolP); - - add_symbolP = NULL; - fixP->fx_addsy = NULL; - } else { - /* Different segments in subtraction. */ - know(!(S_IS_EXTERNAL(sub_symbolP) && (S_GET_SEGMENT(sub_symbolP) == SEG_ABSOLUTE))); - - if ((S_GET_SEGMENT(sub_symbolP) == SEG_ABSOLUTE)) { - add_number -= S_GET_VALUE(sub_symbolP); - } else { - as_bad("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %d.", - segment_name(S_GET_SEGMENT(sub_symbolP)), - S_GET_NAME(sub_symbolP), fragP->fr_address + where); - } /* if absolute */ - } - } /* if sub_symbolP */ - - if (add_symbolP) { - if (add_symbol_segment == this_segment_type && pcrel) { - /* + if (fixP->fx_callj) + { + as_bad ("callj to difference of 2 symbols"); + } +#endif /* TC_I960 */ + add_number += S_GET_VALUE (add_symbolP) - + S_GET_VALUE (sub_symbolP); + + add_symbolP = NULL; + fixP->fx_addsy = NULL; + } + else + { + /* Different segments in subtraction. */ + know (!(S_IS_EXTERNAL (sub_symbolP) && (S_GET_SEGMENT (sub_symbolP) == SEG_ABSOLUTE))); + + if ((S_GET_SEGMENT (sub_symbolP) == SEG_ABSOLUTE)) + { + add_number -= S_GET_VALUE (sub_symbolP); + } + else + { + as_bad ("Can't emit reloc {- %s-seg symbol \"%s\"} @ file address %d.", + segment_name (S_GET_SEGMENT (sub_symbolP)), + S_GET_NAME (sub_symbolP), fragP->fr_address + where); + } /* if absolute */ + } + } /* if sub_symbolP */ + + if (add_symbolP) + { + if (add_symbol_segment == this_segment_type && pcrel) + { + /* * 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', + /* 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. */ - reloc_callj(fixP); + reloc_callj (fixP); #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. */ - fixP->fx_addsy = NULL; /* No relocations please. */ - } else { - switch (add_symbol_segment) { - case SEG_ABSOLUTE: + + add_number += S_GET_VALUE (add_symbolP); + add_number -= md_pcrel_from (fixP); + pcrel = 0; /* Lie. Don't want further pcrel processing. */ + fixP->fx_addsy = NULL; /* No relocations please. */ + } + else + { + switch (add_symbol_segment) + { + case SEG_ABSOLUTE: #ifdef TC_I960 - reloc_callj(fixP); /* See comment about reloc_callj() above*/ + reloc_callj (fixP); /* See comment about reloc_callj() above*/ #endif /* TC_I960 */ - add_number += S_GET_VALUE(add_symbolP); - fixP->fx_addsy = NULL; - add_symbolP = NULL; - break; - default: - seg_reloc_count ++; - add_number += S_GET_VALUE(add_symbolP); - break; - - case SEG_UNKNOWN: + add_number += S_GET_VALUE (add_symbolP); + fixP->fx_addsy = NULL; + add_symbolP = NULL; + break; + default: + seg_reloc_count++; + add_number += S_GET_VALUE (add_symbolP); + break; + + case SEG_UNKNOWN: #ifdef TC_I960 - if ((int)fixP->fx_bit_fixP == 13) { - /* This is a COBR instruction. They have only a + 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. */ - as_bad("can't use COBR format with external label"); - fixP->fx_addsy = NULL; /* No relocations please. */ - continue; - } /* COBR */ + as_bad ("can't use COBR format with external label"); + fixP->fx_addsy = NULL; /* No relocations please. */ + continue; + } /* COBR */ #endif /* TC_I960 */ #ifdef OBJ_COFF #ifdef TE_I386AIX - if (S_IS_COMMON(add_symbolP)) - add_number += S_GET_VALUE(add_symbolP); + if (S_IS_COMMON (add_symbolP)) + add_number += S_GET_VALUE (add_symbolP); #endif /* TE_I386AIX */ #endif /* OBJ_COFF */ - ++seg_reloc_count; - - break; - - - } /* switch on symbol seg */ - } /* if not in local seg */ - } /* if there was a + symbol */ - - if (pcrel) { - add_number -= md_pcrel_from(fixP); - if (add_symbolP == 0) { - fixP->fx_addsy = & abs_symbol; - ++seg_reloc_count; - } /* if there's an add_symbol */ - } /* if pcrel */ - - if (!fixP->fx_bit_fixP) { - if ((size==1 && - (add_number& ~0xFF) && ((add_number&~0xFF)!=(-1&~0xFF))) || - (size==2 && - (add_number& ~0xFFFF) && ((add_number&~0xFFFF)!=(-1&~0xFFFF)))) { - as_bad("Value of %d too large for field of %d bytes at 0x%x", - add_number, size, fragP->fr_address + where); - } /* generic error checking */ - } /* not a bit fix */ - - md_apply_fix(fixP, add_number); - } /* For each fixS in this segment. */ - + ++seg_reloc_count; + + break; + + + } /* switch on symbol seg */ + } /* if not in local seg */ + } /* if there was a + symbol */ + + if (pcrel) + { + add_number -= md_pcrel_from (fixP); + if (add_symbolP == 0) + { + fixP->fx_addsy = &abs_symbol; + ++seg_reloc_count; + } /* if there's an add_symbol */ + } /* if pcrel */ + + if (!fixP->fx_bit_fixP) + { + if ((size == 1 && + (add_number & ~0xFF) && ((add_number & ~0xFF) != (-1 & ~0xFF))) || + (size == 2 && + (add_number & ~0xFFFF) && ((add_number & ~0xFFFF) != (-1 & ~0xFFFF)))) + { + as_bad ("Value of %d too large for field of %d bytes at 0x%x", + add_number, size, fragP->fr_address + where); + } /* generic error checking */ +#ifdef WARN_SIGNED_OVERFLOW_WORD + /* Warn if a .word value is too large when + treated as a signed number. We already + know it is not too negative. This is to + catch over-large switches generated by gcc + on the 68k. */ + if (!flagseen['J'] + && size == 2 + && add_number > 0x7fff) + as_bad ("Signed .word overflow; switch may be too large; %d at 0x%x", + add_number, fragP->fr_address + where); +#endif + } /* not a bit fix */ + + md_apply_fix (fixP, add_number); + } /* For each fixS in this segment. */ + #ifdef OBJ_COFF #ifdef TC_I960 - { - fixS *topP = fixP; - - /* two relocs per callj under coff. */ - for (fixP = topP; fixP; fixP = fixP->fx_next) { - if (fixP->fx_callj && fixP->fx_addsy != 0) { - ++seg_reloc_count; - } /* if callj and not already fixed. */ - } /* for each fix */ - } + { + fixS *topP = fixP; + + /* two relocs per callj under coff. */ + for (fixP = topP; fixP; fixP = fixP->fx_next) + { + if (fixP->fx_callj && fixP->fx_addsy != 0) + { + ++seg_reloc_count; + } /* if callj and not already fixed. */ + } /* for each fix */ + } #endif /* TC_I960 */ - + #endif /* OBJ_COFF */ - return(seg_reloc_count); -} /* fixup_segment() */ + return (seg_reloc_count); +} /* fixup_segment() */ -static int is_dnrange(f1,f2) -struct frag *f1; -struct frag *f2; +static int +is_dnrange (f1, f2) + struct frag *f1; + struct frag *f2; { - while (f1) { - if (f1->fr_next==f2) - return 1; - f1=f1->fr_next; - } - return 0; -} /* is_dnrange() */ + while (f1) + { + if (f1->fr_next == f2) + return 1; + f1 = f1->fr_next; + } + return 0; +} /* is_dnrange() */ /* Append a string onto another string, bumping the pointer along. */ void - append (charPP, fromP, length) -char **charPP; -char *fromP; -unsigned long length; +append (charPP, fromP, length) + char **charPP; + char *fromP; + unsigned long length; { - if (length) { /* Don't trust memcpy() of 0 chars. */ - memcpy(*charPP, fromP, (int) length); - *charPP += length; - } + if (length) + { /* Don't trust memcpy() of 0 chars. */ + memcpy (*charPP, fromP, (int) length); + *charPP += length; + } } int section_alignment[SEG_MAXIMUM_ORDINAL]; @@ -1213,19 +1315,21 @@ int section_alignment[SEG_MAXIMUM_ORDINAL]; * boundary, all of the other alignments within it will work. At * least one object format really uses this info. */ -void record_alignment(seg, align) -segT seg; /* Segment to which alignment pertains */ -int align; /* Alignment, as a power of 2 +void +record_alignment (seg, align) + segT seg; /* Segment to which alignment pertains */ + int align; /* Alignment, as a power of 2 * (e.g., 1 => 2-byte boundary, 2 => 4-byte boundary, etc.) */ { - - if ( align > section_alignment[(int) seg] ){ - section_alignment[(int) seg] = align; - } /* if highest yet */ - - return; -} /* record_alignment() */ + + if (align > section_alignment[(int) seg]) + { + section_alignment[(int) seg] = align; + } /* if highest yet */ + + return; +} /* record_alignment() */ /* * Local Variables: |