diff options
Diffstat (limited to 'bfd/coff-rs6000.c')
| -rw-r--r-- | bfd/coff-rs6000.c | 478 |
1 files changed, 446 insertions, 32 deletions
diff --git a/bfd/coff-rs6000.c b/bfd/coff-rs6000.c index 4f14602..10047de 100644 --- a/bfd/coff-rs6000.c +++ b/bfd/coff-rs6000.c @@ -1,5 +1,5 @@ /* BFD back-end for IBM RS/6000 "XCOFF" files. - Copyright 1990, 1991, 1992, 1993 Free Software Foundation, Inc. + Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc. FIXME: Can someone provide a transliteration of this name into ASCII? Using the following chars caused a compiler warning on HIUX (so I replaced them with octal escapes), and isn't useful without an understanding of what @@ -44,30 +44,425 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* The main body of code is in coffcode.h. */ -/* Can't read rs6000 relocs */ -static reloc_howto_type dummy_reloc = - HOWTO (0, /* type */ - 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ - 8, /* bitsize */ - false, /* pc_relative */ - 0, /* bitpos */ - complain_overflow_dont, /* complain_on_overflow */ - 0, /* special_function */ - "UNKNOWN", /* name */ - false, /* partial_inplace */ - 0, /* src_mask */ - 0, /* dst_mask */ - false); /* pcrel_offset */ - -#define RTYPE2HOWTO(cache_ptr, dst) cache_ptr->howto = &dummy_reloc; +/* The XCOFF reloc table. Actually, XCOFF relocations specify the + bitsize and whether they are signed or not, along with a + conventional type. This table is for the types, which are used for + different algorithms for putting in the reloc. Many of these + relocs need special_function entries, which I have not written. */ + +static reloc_howto_type rs6000coff_howto_table[] = +{ + /* Standard 32 bit relocation. */ + HOWTO (0, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_POS", /* name */ + true, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* 32 bit relocation, but store negative value. */ + HOWTO (1, /* type */ + 0, /* rightshift */ + -2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_NEG", /* name */ + true, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* 32 bit PC relative relocation. */ + HOWTO (2, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + true, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + 0, /* special_function */ + "R_REL", /* name */ + true, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* 16 bit TOC relative relocation. */ + HOWTO (3, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + 0, /* special_function */ + "R_TOC", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* I don't really know what this is. */ + HOWTO (4, /* type */ + 1, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_RTB", /* name */ + true, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* External TOC relative symbol. */ + HOWTO (5, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_GL", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Local TOC relative symbol. */ + HOWTO (6, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_TCL", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + { 7 }, + + /* Non modifiable absolute branch. */ + HOWTO (8, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 26, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_BA", /* name */ + true, /* partial_inplace */ + 0x3fffffc, /* src_mask */ + 0x3fffffc, /* dst_mask */ + false), /* pcrel_offset */ + + { 9 }, + + /* Non modifiable relative branch. */ + HOWTO (0xa, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 26, /* bitsize */ + true, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + 0, /* special_function */ + "R_BR", /* name */ + true, /* partial_inplace */ + 0x3fffffc, /* src_mask */ + 0x3fffffc, /* dst_mask */ + false), /* pcrel_offset */ + + { 0xb }, + + /* Indirect load. */ + HOWTO (0xc, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_RL", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Load address. */ + HOWTO (0xd, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_RLA", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + { 0xe }, + + /* Non-relocating reference. */ + HOWTO (0xf, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_REF", /* name */ + false, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + false), /* pcrel_offset */ + + { 0x10 }, + { 0x11 }, + + /* TOC relative indirect load. */ + HOWTO (0x12, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_TRL", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* TOC relative load address. */ + HOWTO (0x13, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_TRLA", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Modifiable relative branch. */ + HOWTO (0x14, /* type */ + 1, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_RRTBI", /* name */ + true, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Modifiable absolute branch. */ + HOWTO (0x15, /* type */ + 1, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_RRTBA", /* name */ + true, /* partial_inplace */ + 0xffffffff, /* src_mask */ + 0xffffffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Modifiable call absolute indirect. */ + HOWTO (0x16, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_CAI", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Modifiable call relative. */ + HOWTO (0x17, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_REL", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Modifiable branch absolute. */ + HOWTO (0x18, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_RBA", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Modifiable branch absolute. */ + HOWTO (0x19, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_RBAC", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Modifiable branch relative. */ + HOWTO (0x1a, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 26, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_signed, /* complain_on_overflow */ + 0, /* special_function */ + "R_REL", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false), /* pcrel_offset */ + + /* Modifiable branch absolute. */ + HOWTO (0x1b, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + false, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + 0, /* special_function */ + "R_REL", /* name */ + true, /* partial_inplace */ + 0xffff, /* src_mask */ + 0xffff, /* dst_mask */ + false) /* pcrel_offset */ +}; + +#define RTYPE2HOWTO(cache_ptr, dst) rs6000coff_rtype2howto (cache_ptr, dst) + +static void rs6000coff_rtype2howto PARAMS ((arelent *, + struct internal_reloc *)); + +static void +rs6000coff_rtype2howto (relent, internal) + arelent *relent; + struct internal_reloc *internal; +{ + relent->howto = rs6000coff_howto_table + internal->r_type; + + /* The r_size field of an XCOFF reloc encodes the bitsize of the + relocation, as well as indicating whether it is signed or not. + Doublecheck that the relocation information gathered from the + type matches this information. */ + if (relent->howto->bitsize != (internal->r_size & 0x1f) + 1) + abort (); +#if 0 + if ((internal->r_size & 0x80) != 0 + ? (relent->howto->complain_on_overflow != complain_overflow_signed) + : (relent->howto->complain_on_overflow != complain_overflow_bitfield)) + abort (); +#endif +} + +#define coff_bfd_reloc_type_lookup rs6000coff_reloc_type_lookup + +static const struct reloc_howto_struct *rs6000coff_reloc_type_lookup + PARAMS ((bfd *, bfd_reloc_code_real_type)); + +static const struct reloc_howto_struct * +rs6000coff_reloc_type_lookup (abfd, code) + bfd *abfd; + bfd_reloc_code_real_type code; +{ + switch (code) + { + case BFD_RELOC_PPC_B26: + return &rs6000coff_howto_table[0xa]; + case BFD_RELOC_PPC_BA26: + return &rs6000coff_howto_table[8]; + case BFD_RELOC_PPC_TOC16: + return &rs6000coff_howto_table[3]; + case BFD_RELOC_32: + return &rs6000coff_howto_table[0]; + default: + return NULL; + } +} + +#define SELECT_RELOC(internal, howto) \ + { \ + internal.r_type = howto->type; \ + internal.r_size = \ + ((howto->complain_on_overflow == complain_overflow_signed \ + ? 0x80 \ + : 0) \ + | (howto->bitsize - 1)); \ + } + +#define COFF_LONG_FILENAMES #include "coffcode.h" #define coff_archive_p bfd_generic_archive_p #define coff_mkarchive _bfd_generic_mkarchive -#ifdef ARCHIVES_PLEASE +#ifdef HOST_AIX /* ------------------------------------------------------------------------ */ /* Support for archive file stuff.. */ @@ -105,6 +500,7 @@ rs6000coff_mkarchive (abfd) bfd *abfd; { bfd_error = invalid_operation; /* write not supported */ + return false; } @@ -121,15 +517,12 @@ struct areltdata * rs6000coff_snarf_ar_hdr (abfd) bfd *abfd; { - extern int errno; - struct { struct ar_hdr hdr; char namebuf[256]; } h; int size; struct areltdata *ared; - unsigned int namelen = 0; char *allocptr; size = sizeof (h.hdr); @@ -308,14 +701,20 @@ rs6000coff_write_armap (arch, elength, map, orl_count, stridx) bfd *arch; unsigned int elength; struct orl *map; + unsigned int orl_count; + int stridx; { bfd_error = invalid_operation; return false; } -#endif /* ARCHIVES_PLEASE */ +#endif /* HOST_AIX */ -#ifdef COREFILES_PLEASE +#define CORE_FILE_P _bfd_dummy_target + +#ifdef HOST_AIX +#undef CORE_FILE_P +#define CORE_FILE_P rs6000coff_core_p extern bfd_target * rs6000coff_core_p (); extern boolean rs6000coff_get_section_contents (); extern boolean rs6000coff_core_file_matches_executable_p (); @@ -326,7 +725,28 @@ extern boolean rs6000coff_core_file_matches_executable_p (); #undef coff_get_section_contents #define coff_get_section_contents rs6000coff_get_section_contents -#endif +#endif /* HOST_AIX */ + +#ifdef HOST_LYNX + +#undef CORE_FILE_P +#define CORE_FILE_P lynx_core_file_p +extern bfd_target *lynx_core_file_p PARAMS ((bfd *abfd)); + +extern boolean lynx_core_file_matches_executable_p PARAMS ((bfd *core_bfd, + bfd *exec_bfd)); +#undef coff_core_file_matches_executable_p +#define coff_core_file_matches_executable_p lynx_core_file_matches_executable_p + +extern char *lynx_core_file_failing_command PARAMS ((bfd *abfd)); +#undef coff_core_file_failing_command +#define coff_core_file_failing_command lynx_core_file_failing_command + +extern int lynx_core_file_failing_signal PARAMS ((bfd *abfd)); +#undef coff_core_file_failing_signal +#define coff_core_file_failing_signal lynx_core_file_failing_signal + +#endif /* HOST_LYNX */ /* The transfer vector that leads the outside world to all of the above. */ @@ -355,13 +775,7 @@ bfd_target rs6000coff_vec = bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ - coff_archive_p, -#ifdef COREFILES_PLEASE - rs6000coff_core_p -#else - _bfd_dummy_target -#endif - }, + coff_archive_p, CORE_FILE_P}, {bfd_false, coff_mkobject, coff_mkarchive, /* bfd_set_format */ bfd_false}, {bfd_false, coff_write_object_contents, /* bfd_write_contents */ |