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author | Ian Lance Taylor <ian@airs.com> | 1993-10-28 20:36:48 +0000 |
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committer | Ian Lance Taylor <ian@airs.com> | 1993-10-28 20:36:48 +0000 |
commit | 14aa9a78c39300d49cc6a816dbb833a897d9c6e0 (patch) | |
tree | bd02850c1278360caf4934bf2ed75918efc4b1bc /bfd/coff-h8300.c | |
parent | d17eb3db0e135a449c94977aabae938e96584603 (diff) | |
download | gdb-14aa9a78c39300d49cc6a816dbb833a897d9c6e0.zip gdb-14aa9a78c39300d49cc6a816dbb833a897d9c6e0.tar.gz gdb-14aa9a78c39300d49cc6a816dbb833a897d9c6e0.tar.bz2 |
gcc -Wall lint:
* coff-h8300.c (h8300_reloc16_estimate): Declare return type.
Remove useless statement probably left by code copy.
* cpu-i960.c (compatible): Fully bracket matrix initializer.
* elf32-hppa.c (hppa_elf_build_arg_reloc_stub): Use bfd_xmalloc
rather than xmalloc. Use realloc and check the return value
rather than xrealloc.
(hppa_elf_get_section_contents): Add some casts.
* elf32-i386.c (elf_i386_reloc_type_lookup): Remove unused
variable. Add default case to switch.
* hp300hpux.c: Declare aout_32_write_syms.
* i386bsd.c, i386linux.c, netbsd386.c (N_SHARED_LIB): Define as 0
(definition from aout/aout64.h is always 0 anyhow).
* i386lynx.c (swap_std_reloc_in): Remove unused variable.
* ieee.c (ieee_write_id): length can never be negative.
(read_id): Likewise.
(ieee_archive_p): Remove unused variable.
* libcoff-in.h (bfd_perform_slip): Declare.
* libcoff.h: Rebuilt.
* oasys.c (oasys_write_sections): Remove zero initialization of
static structure.
* reloc16.c: Indentation change.
Diffstat (limited to 'bfd/coff-h8300.c')
-rw-r--r-- | bfd/coff-h8300.c | 522 |
1 files changed, 446 insertions, 76 deletions
diff --git a/bfd/coff-h8300.c b/bfd/coff-h8300.c index d368f78..5ae8833 100644 --- a/bfd/coff-h8300.c +++ b/bfd/coff-h8300.c @@ -1,7 +1,6 @@ -/* Hitachi H8/300 COFF back-end for BFD. - Copyright (C) 1990-1991 Free Software Foundation, Inc. - Written by Steve Chamberlain - sac@cygnus.com +/* BFD back-end for Hitachi H8/300 COFF binaries. + Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc. + Written by Steve Chamberlain, <sac@cygnus.com>. This file is part of BFD, the Binary File Descriptor library. @@ -19,29 +18,35 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ - #include "bfd.h" #include "sysdep.h" #include "libbfd.h" #include "obstack.h" #include "coff/h8300.h" #include "coff/internal.h" +#include "seclet.h" #include "libcoff.h" +extern bfd_error_vector_type bfd_error_vector; -static reloc_howto_type howto_table[] = +static reloc_howto_type howto_table[] = { - HOWTO(R_RELBYTE, 0, 0, 8, false, 0, true, true,0,"8", true, 0x000000ff,0x000000ff, false), - HOWTO(R_RELWORD, 0, 1, 16, false, 0, true, true,0,"16", true, 0x0000ffff,0x0000ffff, false), - HOWTO(R_RELLONG, 0, 2, 32, false, 0, true, true,0,"32", true, 0xffffffff,0xffffffff, false), - HOWTO(R_PCRBYTE, 0, 0, 8, true, 0, false, true,0,"DISP8", true, 0x000000ff,0x000000ff, true), - HOWTO(R_PCRWORD, 0, 1, 16, true, 0, false, true,0,"DISP16", true, 0x0000ffff,0x0000ffff, true), - HOWTO(R_PCRLONG, 0, 2, 32, true, 0, false, true,0,"DISP32", true, 0xffffffff,0xffffffff, true), - HOWTO(R_MOVB1, 0, 1, 16, false, 0, true, - true,0,"16/8", true, 0x0000ffff,0x0000ffff, false), - HOWTO(R_MOVB2, 0, 1, 16, false, 0, true, - true,0,"8/16", true, 0x0000ffff,0x0000ffff, false), - HOWTO(R_JMP1, 0, 1, 16, false, 0, true, true,0,"16/pcrel", true, 0x0000ffff,0x0000ffff, false), - HOWTO(R_JMP2, 0, 0, 8, false, 0, true, true,0,"pcrecl/16", true, 0x000000ff,0x000000ff, false), + HOWTO (R_RELBYTE, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, "8", true, 0x000000ff, 0x000000ff, false), + HOWTO (R_RELWORD, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "16", true, 0x0000ffff, 0x0000ffff, false), + HOWTO (R_RELLONG, 0, 2, 32, false, 0, complain_overflow_bitfield, 0, "32", true, 0xffffffff, 0xffffffff, false), + HOWTO (R_PCRBYTE, 0, 0, 8, true, 0, complain_overflow_signed, 0, "DISP8", true, 0x000000ff, 0x000000ff, true), + HOWTO (R_PCRWORD, 0, 1, 16, true, 0, complain_overflow_signed, 0, "DISP16", true, 0x0000ffff, 0x0000ffff, true), + HOWTO (R_PCRLONG, 0, 2, 32, true, 0, complain_overflow_signed, 0, "DISP32", true, 0xffffffff, 0xffffffff, true), + HOWTO (R_MOVB1, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "16/8", true, 0x0000ffff, 0x0000ffff, false), + HOWTO (R_MOVB2, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "8/16", true, 0x0000ffff, 0x0000ffff, false), + HOWTO (R_JMP1, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "16/pcrel", true, 0x0000ffff, 0x0000ffff, false), + HOWTO (R_JMP2, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, "pcrecl/16", true, 0x000000ff, 0x000000ff, false), + + + HOWTO (R_JMPL1, 0, 1, 32, false, 0, complain_overflow_bitfield, 0, "24/pcrell", true, 0x0000ffff, 0x0000ffff, false), + HOWTO (R_JMPL_B8, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, "pc8/24", true, 0x000000ff, 0x000000ff, false), + + HOWTO (R_MOVLB1, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "24/8", true, 0x0000ffff, 0x0000ffff, false), + HOWTO (R_MOVLB2, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "8/24", true, 0x0000ffff, 0x0000ffff, false), }; @@ -49,10 +54,10 @@ static reloc_howto_type howto_table[] = /* Turn a howto into a reloc number */ #define SELECT_RELOC(x,howto) \ - { x = howto_table[howto->size +(int)howto->pc_relative*3].type; } + { x = select_reloc(howto); } -#define BADMAG(x) H8300BADMAG(x) -#define H8300 1 /* Customize coffcode.h */ +#define BADMAG(x) (H8300BADMAG(x)&& H8300HBADMAG(x)) +#define H8300 1 /* Customize coffcode.h */ #define __A_MAGIC_SET__ @@ -62,28 +67,43 @@ static reloc_howto_type howto_table[] = #define SWAP_OUT_RELOC_OFFSET bfd_h_put_32 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ dst->r_stuff[0] = 'S'; \ - dst->r_stuff[1] = 'C'; + dst->r_stuff[1] = 'C'; + + +static int +select_reloc (howto) + reloc_howto_type *howto; +{ + return howto->type; +} /* Code to turn a r_type into a howto ptr, uses the above howto table */ -static void -DEFUN(rtype2howto,(internal, dst), -arelent *internal AND -struct internal_reloc *dst) +static void +rtype2howto (internal, dst) + arelent *internal; + struct internal_reloc *dst; { - switch (dst->r_type) { + switch (dst->r_type) + { case R_RELBYTE: - internal->howto = howto_table+ 0; + internal->howto = howto_table + 0; break; case R_RELWORD: - internal->howto = howto_table+ 1; - break; + internal->howto = howto_table + 1; + break; + case R_RELLONG: + internal->howto = howto_table + 2; + break; case R_PCRBYTE: - internal->howto = howto_table+3; + internal->howto = howto_table + 3; break; case R_PCRWORD: - internal->howto = howto_table+ 4; + internal->howto = howto_table + 4; + break; + case R_PCRLONG: + internal->howto = howto_table + 5; break; case R_MOVB1: internal->howto = howto_table + 6; @@ -92,15 +112,25 @@ struct internal_reloc *dst) internal->howto = howto_table + 7; break; case R_JMP1: - internal->howto = howto_table +8; + internal->howto = howto_table + 8; break; - case R_JMP2: - internal->howto = howto_table +9; + internal->howto = howto_table + 9; + break; + case R_JMPL1: + internal->howto = howto_table + 10; + break; + case R_JMPL_B8: + internal->howto = howto_table + 11; + break; + case R_MOVLB1: + internal->howto = howto_table + 12; + break; + case R_MOVLB2: + internal->howto = howto_table + 13; break; - default: -fprintf(stderr,"Bad reloc\n"); + fprintf (stderr, "Bad reloc\n"); break; } } @@ -114,50 +144,386 @@ fprintf(stderr,"Bad reloc\n"); #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ cache_ptr->addend = ext_reloc.r_offset; - + #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ reloc_processing(relent, reloc, symbols, abfd, section) -static void DEFUN(reloc_processing,(relent,reloc, symbols, abfd, section) , - arelent *relent AND - struct internal_reloc *reloc AND - asymbol **symbols AND - bfd *abfd AND - asection *section) +static void +DEFUN (reloc_processing, (relent, reloc, symbols, abfd, section), + arelent * relent AND + struct internal_reloc *reloc AND + asymbol ** symbols AND + bfd * abfd AND + asection * section) { - relent->address = reloc->r_vaddr; - rtype2howto(relent,reloc); - - if (reloc->r_symndx > 0) - { - - relent->sym_ptr_ptr = symbols + obj_convert(abfd)[reloc->r_symndx]; - - } - else - { - relent->sym_ptr_ptr = &(bfd_abs_symbol); - } + relent->address = reloc->r_vaddr; + rtype2howto (relent, reloc); + + if (((int) reloc->r_symndx) > 0) + { + relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; + } + else + { + relent->sym_ptr_ptr = &(bfd_abs_symbol); + } + + + + relent->addend = reloc->r_offset; + + relent->address -= section->vma; + /* relent->section = 0;*/ +} + + +static int +h8300_reloc16_estimate(input_section, symbols, reloc, shrink) + asection *input_section; + asymbol **symbols; + arelent *reloc; + unsigned int shrink; +{ + bfd_vma value; + bfd_vma dot; + bfd_vma gap; + + /* The address of the thing to be relocated will have moved back by + the size of the shrink - but we don't change reloc->address here, + since we need it to know where the relocation lives in the source + uncooked section */ + + /* reloc->address -= shrink; conceptual */ + + bfd_vma address = reloc->address - shrink; + switch (reloc->howto->type) + { + case R_MOVB2: + case R_JMP2: + shrink+=2; + break; + + /* Thing is a move one byte */ + case R_MOVB1: + value = bfd_coff_reloc16_get_value(reloc,0); + + if (value >= 0xff00) + { + + /* Change the reloc type from 16bit, possible 8 to 8bit + possible 16 */ + reloc->howto = reloc->howto + 1; + /* The place to relc moves back by one */ + /* This will be two bytes smaller in the long run */ + shrink +=2 ; + bfd_perform_slip(symbols, 2, input_section, address); + } + + break; + /* This is the 24 bit branch which could become an 8 bitter, + the relocation points to the first byte of the insn, not the + actual data */ + + case R_JMPL1: + value = bfd_coff_reloc16_get_value(reloc, 0); + + dot = input_section->output_section->vma + + input_section->output_offset + address; - relent->addend = reloc->r_offset; + /* See if the address we're looking at within 127 bytes of where + we are, if so then we can use a small branch rather than the + jump we were going to */ + + gap = value - dot ; + + if (-120 < (long)gap && (long)gap < 120 ) + { + + /* Change the reloc type from 24bit, possible 8 to 8bit + possible 32 */ + reloc->howto = reloc->howto + 1; + /* This will be two bytes smaller in the long run */ + shrink +=2 ; + bfd_perform_slip(symbols, 2, input_section, address); + } + break; + + case R_JMP1: + + value = bfd_coff_reloc16_get_value(reloc, 0); + + dot = input_section->output_section->vma + + input_section->output_offset + address; + + /* See if the address we're looking at within 127 bytes of where + we are, if so then we can use a small branch rather than the + jump we were going to */ + + gap = value - (dot - shrink); + + + if (-120 < (long)gap && (long)gap < 120 ) + { + + /* Change the reloc type from 16bit, possible 8 to 8bit + possible 16 */ + reloc->howto = reloc->howto + 1; + /* The place to relc moves back by one */ + + /* This will be two bytes smaller in the long run */ + shrink +=2 ; + bfd_perform_slip(symbols, 2, input_section, address); + } + break; + } + - relent->address-= section->vma; -/* relent->section = 0;*/ + return shrink; } + +/* First phase of a relaxing link */ + +/* Reloc types + large small + R_MOVB1 R_MOVB2 mov.b with 16bit or 8 bit address + R_JMP1 R_JMP2 jmp or pcrel branch + R_JMPL1 R_JMPL_B8 24jmp or pcrel branch + R_MOVLB1 R_MOVLB2 24 or 8 bit reloc for mov.b + +*/ + +static void +h8300_reloc16_extra_cases (abfd, seclet, reloc, data, src_ptr, dst_ptr) + bfd *abfd; + struct bfd_seclet *seclet; + arelent *reloc; + bfd_byte *data; + unsigned int *src_ptr; + unsigned int *dst_ptr; +{ + unsigned int src_address = *src_ptr; + unsigned int dst_address = *dst_ptr; + + switch (reloc->howto->type) + { + /* A 24 bit branch which could be a 8 bit pcrel, really pointing to + the byte before the 24bit hole, so we can treat it as a 32bit pointer */ + case R_PCRBYTE: + { + bfd_vma dot = seclet->offset + + dst_address + + seclet->u.indirect.section->output_section->vma; + int gap = bfd_coff_reloc16_get_value (reloc, seclet) - dot; + if (gap > 127 || gap < -128) + { + bfd_error_vector.reloc_value_truncated (reloc, seclet); + } + + bfd_put_8 (abfd, gap, data + dst_address); + dst_address++; + src_address++; + + break; + } + + case R_RELBYTE: + { + unsigned int gap = bfd_coff_reloc16_get_value (reloc, seclet); + if (gap > 0xff && gap < ~0xff) + { + bfd_error_vector.reloc_value_truncated (reloc, seclet); + } + + bfd_put_8 (abfd, gap, data + dst_address); + dst_address += 1; + src_address += 1; + + + } + break; + case R_JMP1: + /* A relword which would have like to have been a pcrel */ + case R_MOVB1: + /* A relword which would like to have been modified but + didn't make it */ + case R_RELWORD: + bfd_put_16 (abfd, bfd_coff_reloc16_get_value (reloc, seclet), + data + dst_address); + dst_address += 2; + src_address += 2; + break; + case R_RELLONG: + bfd_put_32 (abfd, bfd_coff_reloc16_get_value (reloc, seclet), + data + dst_address); + dst_address += 4; + src_address += 4; + break; + + case R_MOVB2: + /* Special relaxed type, there will be a gap between where we + get stuff from and where we put stuff to now + + for a mov.b @aa:16 -> mov.b @aa:8 + opcode 0x6a 0x0y offset + -> 0x2y off + */ + if (data[dst_address - 1] != 0x6a) + abort (); + switch (data[src_address] & 0xf0) + { + case 0x00: + /* Src is memory */ + data[dst_address - 1] = (data[src_address] & 0xf) | 0x20; + break; + case 0x80: + /* Src is reg */ + data[dst_address - 1] = (data[src_address] & 0xf) | 0x30; + break; + default: + abort (); + } + + /* the offset must fit ! after all, what was all the relaxing + about ? */ + + bfd_put_8 (abfd, bfd_coff_reloc16_get_value (reloc, seclet), + data + dst_address); + + /* Note the magic - src goes up by two bytes, but dst by only + one */ + dst_address += 1; + src_address += 3; + + break; + + case R_JMP2: + + /* Speciial relaxed type */ + { + bfd_vma dot = seclet->offset + + dst_address + + seclet->u.indirect.section->output_section->vma; + + int gap = bfd_coff_reloc16_get_value (reloc, seclet) - dot - 1; + + if ((gap & ~0xff) != 0 && ((gap & 0xff00) != 0xff00)) + abort (); + + bfd_put_8 (abfd, gap, data + dst_address); + + switch (data[dst_address - 1]) + { + case 0x5e: + /* jsr -> bsr */ + bfd_put_8 (abfd, 0x55, data + dst_address - 1); + break; + case 0x5a: + /* jmp ->bra */ + bfd_put_8 (abfd, 0x40, data + dst_address - 1); + break; + + default: + abort (); + } + dst_address++; + src_address += 3; + + break; + } + break; + + case R_JMPL_B8: /* 24 bit branch which is now 8 bits */ + + /* Speciial relaxed type */ + { + bfd_vma dot = seclet->offset + + dst_address + + seclet->u.indirect.section->output_section->vma; + + int gap = bfd_coff_reloc16_get_value (reloc, seclet) - dot - 2; + + if ((gap & ~0xff) != 0 && ((gap & 0xff00) != 0xff00)) + abort (); + + switch (data[src_address]) + { + case 0x5e: + /* jsr -> bsr */ + bfd_put_8 (abfd, 0x55, data + dst_address); + break; + case 0x5a: + /* jmp ->bra */ + bfd_put_8 (abfd, 0x40, data + dst_address); + break; + + default: + bfd_put_8 (abfd, 0xde, data + dst_address); + break; + } + + bfd_put_8 (abfd, gap, data + dst_address + 1); + dst_address += 2; + src_address += 4; + + break; + } + + case R_JMPL1: + { + int v = bfd_coff_reloc16_get_value (reloc, seclet); + int o = bfd_get_32 (abfd, data + src_address); + v = (v & 0x00ffffff) | (o & 0xff000000); + bfd_put_32 (abfd, v, data + dst_address); + dst_address += 4; + src_address += 4; + } + + break; + + + /* A 24 bit mov which could be an 8 bit move, really pointing to + the byte before the 24bit hole, so we can treat it as a 32bit pointer */ + case R_MOVLB1: + { + int v = bfd_coff_reloc16_get_value (reloc, seclet); + int o = bfd_get_32 (abfd, data + dst_address); + v = (v & 0x00ffffff) | (o & 0xff000000); + bfd_put_32 (abfd, v, data + dst_address); + dst_address += 4; + src_address += 4; + } + + break; + default: + + abort (); + break; + + } + *src_ptr = src_address; + *dst_ptr = dst_address; + +} + +#define coff_reloc16_extra_cases h8300_reloc16_extra_cases +#define coff_reloc16_estimate h8300_reloc16_estimate + #include "coffcode.h" -#undef coff_bfd_get_relocated_section_contents +#undef coff_bfd_get_relocated_section_contents #undef coff_bfd_relax_section -#define coff_bfd_get_relocated_section_contents bfd_coff_get_relocated_section_contents -#define coff_bfd_relax_section bfd_coff_relax_section +#define coff_bfd_get_relocated_section_contents bfd_coff_reloc16_get_relocated_section_contents +#define coff_bfd_relax_section bfd_coff_reloc16_relax_section + + bfd_target h8300coff_vec = { - "coff-h8300", /* name */ + "coff-h8300", /* name */ bfd_target_coff_flavour, true, /* data byte order is big */ true, /* header byte order is big */ @@ -165,21 +531,25 @@ bfd_target h8300coff_vec = (HAS_RELOC | EXEC_P | /* object flags */ HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT), - ( SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ - '_', /* leading char */ + (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ + '_', /* leading char */ '/', /* ar_pad_char */ 15, /* ar_max_namelen */ 1, /* minimum section alignment */ -_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* data */ -_do_getb64, _do_putb64, _do_getb32, _do_putb32, _do_getb16, _do_putb16, /* hdrs */ - - {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ - bfd_generic_archive_p, _bfd_dummy_target}, - {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ - bfd_false}, + bfd_getb64, bfd_getb_signed_64, bfd_putb64, + bfd_getb32, bfd_getb_signed_32, bfd_putb32, + bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ + bfd_getb64, bfd_getb_signed_64, bfd_putb64, + bfd_getb32, bfd_getb_signed_32, bfd_putb32, + bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ + + {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ + bfd_generic_archive_p, _bfd_dummy_target}, + {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ + bfd_false}, {bfd_false, coff_write_object_contents, /* bfd_write_contents */ - _bfd_write_archive_contents, bfd_false}, + _bfd_write_archive_contents, bfd_false}, - JUMP_TABLE(coff), - COFF_SWAP_TABLE + JUMP_TABLE (coff), + COFF_SWAP_TABLE, }; 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