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-rw-r--r--bfd/aout-mipsbsd.c456
-rw-r--r--bfd/aoutx.h14
2 files changed, 469 insertions, 1 deletions
diff --git a/bfd/aout-mipsbsd.c b/bfd/aout-mipsbsd.c
new file mode 100644
index 0000000..380c417
--- /dev/null
+++ b/bfd/aout-mipsbsd.c
@@ -0,0 +1,456 @@
+#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 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 DEFUN(MY(set_arch_mach), (abfd, machtype),
+ bfd *abfd AND int machtype);
+static void DEFUN(MY(choose_reloc_size),(abfd),bfd *abfd);
+
+#define MY_write_object_contents MY(write_object_contents)
+static boolean DEFUN(MY(write_object_contents), (abfd), 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
+DEFUN(MY(set_arch_mach), (abfd, machtype),
+ bfd *abfd AND 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
+DEFUN(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
+DEFUN(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
+DEFUN(mips_fix_hi16_s, (abfd,reloc_entry,symbol,data,input_section,output_bfd),
+ bfd *abfd AND
+ arelent *reloc_entry AND
+ struct symbol_cache_entry *symbol AND
+ PTR data AND
+ asection *input_section AND
+ 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,
+ 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,
+ MY_reloc_howto_type_lookup,
+ MY_make_debug_symbol,
+ (PTR) MY_backend_data,
+};
diff --git a/bfd/aoutx.h b/bfd/aoutx.h
index 2c5907d..592bad5 100644
--- a/bfd/aoutx.h
+++ b/bfd/aoutx.h
@@ -595,9 +595,20 @@ DEFUN(NAME(aout,machine_type),(arch, machine),
if (machine == 0) arch_flags = M_29K;
break;
+ case bfd_arch_mips:
+ switch (machine) {
+ case 0:
+ case 2000:
+ case 3000: arch_flags = M_MIPS1; break;
+ case 4000:
+ case 4400:
+ case 6000: arch_flags = M_MIPS2; break;
+ default: arch_flags = M_UNKNOWN; break;
+ }
+ break;
+
default:
arch_flags = M_UNKNOWN;
- break;
}
return arch_flags;
}
@@ -634,6 +645,7 @@ DEFUN(NAME(aout,set_arch_mach),(abfd, arch, machine),
switch (arch) {
case bfd_arch_sparc:
case bfd_arch_a29k:
+ case bfd_arch_mips:
obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;
break;
default:
generated by cgit v1.1 at 2024-09-15 09:09:49 +0000