diff options
Diffstat (limited to 'bfd/aout-mipsbsd.c')
| -rw-r--r-- | bfd/aout-mipsbsd.c | 461 |
1 files changed, 461 insertions, 0 deletions
diff --git a/bfd/aout-mipsbsd.c b/bfd/aout-mipsbsd.c new file mode 100644 index 0000000..fd88cbf --- /dev/null +++ b/bfd/aout-mipsbsd.c @@ -0,0 +1,461 @@ +<<<<<<< 1.3 is dead >>>>>>> +#define BYTES_IN_WORD 4 +#define ARCH 32 +/* #define ENTRY_CAN_BE_ZERO */ +#define N_HEADER_IN_TEXT(x) 1 +#define N_SHARED_LIB(x) 0 +#define N_TXTADDR(x) \ + (N_MAGIC(x) != ZMAGIC ? (x).a_entry : /* object file or NMAGIC */\ + TEXT_START_ADDR + EXEC_BYTES_SIZE /* no padding */\ + ) +#define N_DATADDR(x) (N_TXTADDR(x)+N_TXTSIZE(x)) +#define TEXT_START_ADDR 4096 +#define PAGE_SIZE 4096 +#define SEGMENT_SIZE PAGE_SIZE +#define DEFAULT_ARCH bfd_arch_mips +#define MACHTYPE_OK(mtype) ((mtype) == M_UNKNOWN \ + || (mtype) == M_MIPS1 || (mtype) == M_MIPS2) +#define MY_symbol_leading_char '\0' + +#define MY(OP) CAT(mipsbsd_,OP) + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" +#include "libaout.h" + +#define SET_ARCH_MACH(ABFD, EXEC) \ + MY(set_arch_mach)(ABFD, N_MACHTYPE (EXEC)); \ + MY(choose_reloc_size)(ABFD); +void MY(set_arch_mach) PARAMS ((bfd *abfd, int machtype)); +static void MY(choose_reloc_size) PARAMS ((bfd *abfd)); + +#define MY_write_object_contents MY(write_object_contents) +static boolean MY(write_object_contents) PARAMS ((bfd *abfd)); + +#define MY_reloc_howto_type_lookup MY(reloc_howto_type_lookup) +#define MY_canonicalize_reloc MY(canonicalize_reloc) + +#define MY_backend_data &MY(backend_data) +#define MY_BFD_TARGET + +#include "aout-target.h" + +/* + * These really should be common to all BSD systems. + * Also, to reduce space, should ifdef the individual cases if MINIMIZE=1. + */ +void +MY(set_arch_mach) (abfd, machtype) + bfd *abfd; + int machtype; +{ + enum bfd_architecture arch; + long machine; + + /* Determine the architecture and machine type of the object file. */ + switch (machtype) { + + case M_68010: + case M_HP200: + arch = bfd_arch_m68k; + machine = 68010; + break; + + case M_68020: + case M_HP300: + arch = bfd_arch_m68k; + machine = 68020; + break; + + case M_SPARC: + arch = bfd_arch_sparc; + machine = 0; + break; + + case M_386: + arch = bfd_arch_i386; + machine = 0; + break; + + case M_29K: + arch = bfd_arch_a29k; + machine = 0; + break; + + case M_HPUX: + arch = bfd_arch_m68k; + machine = 0; + break; + + case M_MIPS1: + arch = bfd_arch_mips; + machine = 3000; + break; + + case M_MIPS2: + arch = bfd_arch_mips; + machine = 4000; + break; + + default: + arch = bfd_arch_obscure; + machine = 0; + break; + } + bfd_set_arch_mach(abfd, arch, machine); +} + +/* Determine the size of a relocation entry, based on the architecture */ +static void +MY(choose_reloc_size) (abfd) + bfd *abfd; +{ + switch (bfd_get_arch(abfd)) { + case bfd_arch_sparc: + case bfd_arch_a29k: + case bfd_arch_mips: + obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; + break; + default: + obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; + break; + } +} + +/* Write an object file in BSD a.out format. + Section contents have already been written. We write the + file header, symbols, and relocation. */ + +static boolean +MY(write_object_contents) (abfd) + bfd *abfd; +{ + struct external_exec exec_bytes; + struct internal_exec *execp = exec_hdr (abfd); + + /* Magic number, maestro, please! */ + switch (bfd_get_arch(abfd)) { + case bfd_arch_m68k: + switch (bfd_get_mach(abfd)) { + case 68010: + N_SET_MACHTYPE(*execp, M_68010); + break; + default: + case 68020: + N_SET_MACHTYPE(*execp, M_68020); + break; + } + break; + case bfd_arch_sparc: + N_SET_MACHTYPE(*execp, M_SPARC); + break; + case bfd_arch_i386: + N_SET_MACHTYPE(*execp, M_386); + break; + case bfd_arch_a29k: + N_SET_MACHTYPE(*execp, M_29K); + break; + case bfd_arch_mips: + switch (bfd_get_mach(abfd)) { + case 4000: + case 6000: + N_SET_MACHTYPE(*execp, M_MIPS2); + break; + default: + N_SET_MACHTYPE(*execp, M_MIPS1); + break; + } + break; + default: + N_SET_MACHTYPE(*execp, M_UNKNOWN); + } + + MY(choose_reloc_size)(abfd); + + WRITE_HEADERS(abfd, execp); + + return true; +} + +/* + * MIPS relocation types. + */ +#define MIPS_RELOC_32 0 +#define MIPS_RELOC_JMP 1 +#define MIPS_RELOC_WDISP16 2 +#define MIPS_RELOC_HI16 3 +#define MIPS_RELOC_HI16_S 4 +#define MIPS_RELOC_LO16 5 + +/* + * This is only called when performing a BFD_RELOC_HI16_S relocation. + * We need to see if bit 15 is set in the result. If it is, we add + * 0x10000 and continue normally. This will compensate for the sign extension + * when the low bits are added at run time. + */ +bfd_reloc_status_type +mips_fix_hi16_s (abfd,reloc_entry,symbol,data,input_section,output_bfd) + bfd *abfd; + arelent *reloc_entry; + struct symbol_cache_entry *symbol; + PTR data; + asection *input_section; + bfd *output_bfd; +{ + bfd_vma relocation; + + /* If this is a partial relocation, just continue. */ + if (output_bfd != (bfd *)NULL) + return bfd_reloc_continue; + + /* + * Work out which section the relocation is targetted at and the + * initial relocation command value. + */ + if (symbol->section == &bfd_com_section) + relocation = 0; + else + relocation = symbol->value; + + relocation += symbol->section->output_section->vma; + relocation += symbol->section->output_offset; + relocation += reloc_entry->addend; + + if (relocation & 0x8000) + reloc_entry->addend += 0x10000; + + return bfd_reloc_continue; +} + +static reloc_howto_type mips_howto_table_ext[] = { + MIPS_RELOC_32, 0, 2, 32, false, 0, true, true, 0, + "32", false, 0, 0xffffffff, false, + MIPS_RELOC_JMP, 2, 2, 26, false, 0, false, true, 0, + "MIPS_JMP", false, 0, 0x03ffffff, false, + MIPS_RELOC_WDISP16, 2, 1, 16, true, 0, false, true, 0, + "WDISP16", false, 0, 0x0000ffff, false, + MIPS_RELOC_HI16, 16, 1, 16, false, 0, false, true, 0, + "HI16", false, 0, 0x0000ffff, false, + MIPS_RELOC_HI16_S, 16, 1, 16, false, 0, false, true, mips_fix_hi16_s, + "HI16_S", false, 0, 0x0000ffff, false, + MIPS_RELOC_LO16, 0, 1, 16, false, 0, false, true, 0, + "LO16", false, 0, 0x0000ffff, false, +}; + +static reloc_howto_type * +MY(reloc_howto_type_lookup) (abfd, code) + bfd *abfd; + bfd_reloc_code_real_type code; +{ + extern reloc_howto_type NAME(aout,ext_howto_table)[]; + + switch (bfd_get_arch (abfd)) + { + case bfd_arch_sparc: + switch (code) + { + default: + return 0; +#define IDX(i,j) case i: return &NAME(aout,ext_howto_table)[j] + IDX (BFD_RELOC_CTOR, 2); + IDX (BFD_RELOC_32, 2); + IDX (BFD_RELOC_HI22, 8); + IDX (BFD_RELOC_LO10, 11); + IDX (BFD_RELOC_32_PCREL_S2, 6); + } + case bfd_arch_mips: + switch (code) + { + case BFD_RELOC_32: + return (&mips_howto_table_ext[MIPS_RELOC_32]); + case BFD_RELOC_MIPS_JMP: + return (&mips_howto_table_ext[MIPS_RELOC_JMP]); + case BFD_RELOC_16_PCREL_S2: + return (&mips_howto_table_ext[MIPS_RELOC_WDISP16]); + case BFD_RELOC_HI16: + return (&mips_howto_table_ext[MIPS_RELOC_HI16]); + case BFD_RELOC_HI16_S: + return (&mips_howto_table_ext[MIPS_RELOC_HI16_S]); + case BFD_RELOC_LO16: + return (&mips_howto_table_ext[MIPS_RELOC_LO16]); + default: + return 0; + } + default: + return 0; + } +} + +/* + * This is just like the standard aoutx.h version but we need to do our + * own mapping of external reloc type values to howto entries. + */ +unsigned int +MY(canonicalize_reloc)(abfd, section, relptr, symbols) + bfd *abfd; + sec_ptr section; + arelent **relptr; + asymbol **symbols; +{ + arelent *tblptr = section->relocation; + unsigned int count, c; + extern reloc_howto_type NAME(aout,ext_howto_table)[]; + + /* If we have already read in the relocation table, return the values. */ + if (section->flags & SEC_CONSTRUCTOR) { + arelent_chain *chain = section->constructor_chain; + + for (count = 0; count < section->reloc_count; count++) { + *relptr++ = &chain->relent; + chain = chain->next; + } + *relptr = 0; + return section->reloc_count; + } + if (tblptr && section->reloc_count) { + for (count = 0; count++ < section->reloc_count;) + *relptr++ = tblptr++; + *relptr = 0; + return section->reloc_count; + } + + if (!NAME(aout,slurp_reloc_table)(abfd, section, symbols)) + return 0; + tblptr = section->relocation; + if (!tblptr) + return 0; + + /* fix up howto entries */ + for (count = 0; count++ < section->reloc_count;) + { + c = tblptr->howto - NAME(aout,ext_howto_table); + tblptr->howto = &mips_howto_table_ext[c]; + + *relptr++ = tblptr++; + } + *relptr = 0; + return section->reloc_count; +} + +static CONST struct aout_backend_data MY(backend_data) = { + 0, /* zmagic contiguous */ + 1, /* text incl header */ + PAGE_SIZE, /* text vma */ + MY_set_sizes, + 0, /* text size includes exec header */ +}; + +bfd_target aout_mips_little_vec = +{ + "aout-mips-little", /* name */ + bfd_target_aout_flavour, + false, /* target byte order (little) */ + false, /* target headers byte order (little) */ + (HAS_RELOC | EXEC_P | /* object flags */ + HAS_LINENO | HAS_DEBUG | + HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), + (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ + MY_symbol_leading_char, + ' ', /* ar_pad_char */ + 15, /* ar_max_namelen */ + 1, /* minimum alignment */ + _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* data */ + _do_getl64, _do_putl64, _do_getl32, _do_putl32, _do_getl16, _do_putl16, /* hdrs */ + {_bfd_dummy_target, MY_object_p, /* bfd_check_format */ + bfd_generic_archive_p, MY_core_file_p}, + {bfd_false, MY_mkobject, /* bfd_set_format */ + _bfd_generic_mkarchive, bfd_false}, + {bfd_false, MY_write_object_contents, /* bfd_write_contents */ + _bfd_write_archive_contents, bfd_false}, + + MY_core_file_failing_command, + MY_core_file_failing_signal, + MY_core_file_matches_executable_p, + MY_slurp_armap, + MY_slurp_extended_name_table, + MY_truncate_arname, + MY_write_armap, + MY_close_and_cleanup, + MY_set_section_contents, + MY_get_section_contents, + MY_new_section_hook, + MY_get_symtab_upper_bound, + MY_get_symtab, + MY_get_reloc_upper_bound, + MY_canonicalize_reloc, + MY_make_empty_symbol, + MY_print_symbol, + MY_get_lineno, + MY_set_arch_mach, + MY_openr_next_archived_file, + MY_find_nearest_line, + MY_generic_stat_arch_elt, + MY_sizeof_headers, + MY_bfd_debug_info_start, + MY_bfd_debug_info_end, + MY_bfd_debug_info_accumulate, + bfd_generic_get_relocated_section_contents, + bfd_generic_relax_section, + bfd_generic_seclet_link, + MY_reloc_howto_type_lookup, + MY_make_debug_symbol, + (PTR) MY_backend_data, +}; + +bfd_target aout_mips_big_vec = +{ + "aout-mips-big", /* name */ + bfd_target_aout_flavour, + true, /* target byte order (big) */ + true, /* target headers byte order (big) */ + (HAS_RELOC | EXEC_P | /* object flags */ + HAS_LINENO | HAS_DEBUG | + HAS_SYMS | HAS_LOCALS | DYNAMIC | WP_TEXT | D_PAGED), + (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ + MY_symbol_leading_char, + ' ', /* ar_pad_char */ + 15, /* ar_max_namelen */ + 1, /* minimum 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, MY_object_p, /* bfd_check_format */ + bfd_generic_archive_p, MY_core_file_p}, + {bfd_false, MY_mkobject, /* bfd_set_format */ + _bfd_generic_mkarchive, bfd_false}, + {bfd_false, MY_write_object_contents, /* bfd_write_contents */ + _bfd_write_archive_contents, bfd_false}, + + MY_core_file_failing_command, + MY_core_file_failing_signal, + MY_core_file_matches_executable_p, + MY_slurp_armap, + MY_slurp_extended_name_table, + MY_truncate_arname, + MY_write_armap, + MY_close_and_cleanup, + MY_set_section_contents, + MY_get_section_contents, + MY_new_section_hook, + MY_get_symtab_upper_bound, + MY_get_symtab, + MY_get_reloc_upper_bound, + MY_canonicalize_reloc, + MY_make_empty_symbol, + MY_print_symbol, + MY_get_lineno, + MY_set_arch_mach, + MY_openr_next_archived_file, + MY_find_nearest_line, + MY_generic_stat_arch_elt, + MY_sizeof_headers, + MY_bfd_debug_info_start, + MY_bfd_debug_info_end, + MY_bfd_debug_info_accumulate, + bfd_generic_get_relocated_section_contents, + bfd_generic_relax_section, + bfd_generic_seclet_link, + MY_reloc_howto_type_lookup, + MY_make_debug_symbol, + (PTR) MY_backend_data, +}; 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