X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Flibaout.h;h=7001d3dc6d4a7590e2723c3be9966ff2373c48d3;hb=fc633e5b9780011f74f2c23837968e43e262a239;hp=0b22dee3ea6034a891f43368dbccc693c50876bd;hpb=5c8444f8f80fee5a32dfecbc0e408640c57c6809;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/libaout.h b/bfd/libaout.h index 0b22dee3ea..7001d3dc6d 100644 --- a/bfd/libaout.h +++ b/bfd/libaout.h @@ -1,5 +1,6 @@ /* BFD back-end data structures for a.out (and similar) files. - Copyright 1990, 1991, 1992 Free Software Foundation, Inc. + Copyright 1990, 91, 92, 93, 94, 95, 96, 97, 1998 + Free Software Foundation, Inc. Written by Cygnus Support. This file is part of BFD, the Binary File Descriptor library. @@ -16,12 +17,17 @@ GNU General Public License for more details. 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. */ +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#ifndef LIBAOUT_H +#define LIBAOUT_H /* We try to encapsulate the differences in the various a.out file variants in a few routines, and otherwise share large masses of code. This means we only have to fix bugs in one place, most of the time. */ +#include "bfdlink.h" + /* Parameterize the a.out code based on whether it is being built for a 32-bit architecture or a 64-bit architecture. */ #if ARCH_SIZE==64 @@ -48,7 +54,46 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ weird scope. */ struct external_exec; struct external_nlist; +struct reloc_ext_external; +struct reloc_std_external; + +/* a.out backend linker hash table entries. */ + +struct aout_link_hash_entry +{ + struct bfd_link_hash_entry root; + /* Whether this symbol has been written out. */ + boolean written; + /* Symbol index in output file. */ + int indx; +}; + +/* a.out backend linker hash table. */ + +struct aout_link_hash_table +{ + struct bfd_link_hash_table root; +}; + +/* Look up an entry in an a.out link hash table. */ + +#define aout_link_hash_lookup(table, string, create, copy, follow) \ + ((struct aout_link_hash_entry *) \ + bfd_link_hash_lookup (&(table)->root, (string), (create), (copy), (follow))) + +/* Traverse an a.out link hash table. */ +#define aout_link_hash_traverse(table, func, info) \ + (bfd_link_hash_traverse \ + (&(table)->root, \ + (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ + (info))) + +/* Get the a.out link hash table from the info structure. This is + just a cast. */ + +#define aout_hash_table(p) ((struct aout_link_hash_table *) ((p)->hash)) + /* Back-end information for various a.out targets. */ struct aout_backend_data { @@ -61,6 +106,15 @@ struct aout_backend_data If not, the text section starts on the next page. */ unsigned char text_includes_header; + /* If this flag is set, then if the entry address is not in the + first SEGMENT_SIZE bytes of the text section, it is taken to be + the address of the start of the text section. This can be useful + for kernels. */ + unsigned char entry_is_text_address; + + /* The value to pass to N_SET_FLAGS. */ + unsigned char exec_hdr_flags; + /* If the text section VMA isn't specified, and we need an absolute address, use this as the default. If we're producing a relocatable file, zero is always used. */ @@ -78,24 +132,43 @@ struct aout_backend_data does *not* get counted in the length of the text section. */ unsigned char exec_header_not_counted; - /* A callback function to read in the dynamic symbols of an object - which is dynamically linked. This returns the number of symbols - read (or -1 on error) and sets *SYMS to a buffer holding an array - of external_nlist structures and *STRS and *STRSIZE to the - associated string table. (This interface works for SunOS, but - can be changed if some other interface is better for some other - shared library implementation). */ - bfd_size_type (*read_dynamic_symbols) PARAMS ((bfd *, - struct external_nlist **syms, - char **strs, - bfd_size_type *strsize)); - - /* A callback function to read in the dynamic relocs of an object - which is dynamically linked. This returns the number of relocs - read (or -1 on error) and sets *RELOCS to a buffer holding an - array of external reloc structures (the type depends upon the - type of object file). */ - bfd_size_type (*read_dynamic_relocs) PARAMS ((bfd *, PTR *relocs)); + /* Callback from the add symbols phase of the linker code to handle + a dynamic object. */ + boolean (*add_dynamic_symbols) PARAMS ((bfd *, struct bfd_link_info *, + struct external_nlist **, + bfd_size_type *, char **)); + + /* Callback from the add symbols phase of the linker code to handle + adding a single symbol to the global linker hash table. */ + boolean (*add_one_symbol) PARAMS ((struct bfd_link_info *, bfd *, + const char *, flagword, asection *, + bfd_vma, const char *, boolean, + boolean, + struct bfd_link_hash_entry **)); + + /* Called to handle linking a dynamic object. */ + boolean (*link_dynamic_object) PARAMS ((struct bfd_link_info *, bfd *)); + + /* Called for each global symbol being written out by the linker. + This should write out the dynamic symbol information. */ + boolean (*write_dynamic_symbol) PARAMS ((bfd *, struct bfd_link_info *, + struct aout_link_hash_entry *)); + + /* If this callback is not NULL, the linker calls it for each reloc. + RELOC is a pointer to the unswapped reloc. If *SKIP is set to + true, the reloc will be skipped. *RELOCATION may be changed to + change the effects of the relocation. */ + boolean (*check_dynamic_reloc) PARAMS ((struct bfd_link_info *info, + bfd *input_bfd, + asection *input_section, + struct aout_link_hash_entry *h, + PTR reloc, bfd_byte *contents, + boolean *skip, + bfd_vma *relocation)); + + /* Called at the end of a link to finish up any dynamic linking + information. */ + boolean (*finish_dynamic_link) PARAMS ((bfd *, struct bfd_link_info *)); }; #define aout_backend_info(abfd) \ ((CONST struct aout_backend_data *)((abfd)->xvec->backend_data)) @@ -126,14 +199,14 @@ struct internal_exec }; /* Magic number is written -< MSB > +< MSB > 3130292827262524232221201918171615141312111009080706050403020100 -< FLAGS >< MACHINE TYPE >< MAGIC NUMBER > +< FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */ /* Magic number for NetBSD is - + 3130292827262524232221201918171615141312111009080706050403020100 -< FLAGS >< >< MAGIC NUMBER > +< FLAGS >< MACHINE TYPE >< MAGIC NUMBER > */ enum machine_type { @@ -142,15 +215,37 @@ enum machine_type { M_68020 = 2, M_SPARC = 3, /* skip a bunch so we don't run into any of suns numbers */ + /* make these up for the ns32k*/ + M_NS32032 = (64), /* ns32032 running ? */ + M_NS32532 = (64 + 5), /* ns32532 running mach */ + M_386 = 100, M_29K = 101, /* AMD 29000 */ M_386_DYNIX = 102, /* Sequent running dynix */ - M_386_NETBSD = 134, /* NetBSD/386 binary */ + M_ARM = 103, /* Advanced Risc Machines ARM */ + M_SPARCLET = 131, /* SPARClet = M_SPARC + 128 */ + M_386_NETBSD = 134, /* NetBSD/i386 binary */ + M_68K_NETBSD = 135, /* NetBSD/m68k binary */ + M_68K4K_NETBSD = 136, /* NetBSD/m68k4k binary */ + M_532_NETBSD = 137, /* NetBSD/ns32k binary */ + M_SPARC_NETBSD = 138, /* NetBSD/sparc binary */ + M_PMAX_NETBSD = 139, /* NetBSD/pmax (MIPS little-endian) binary */ + M_VAX_NETBSD = 140, /* NetBSD/vax binary */ + M_ALPHA_NETBSD = 141, /* NetBSD/alpha binary */ + M_ARM6_NETBSD = 143, /* NetBSD/arm32 binary */ + M_SPARCLET_1 = 147, /* 0x93, reserved */ M_MIPS1 = 151, /* MIPS R2000/R3000 binary */ M_MIPS2 = 152, /* MIPS R4000/R6000 binary */ + M_SPARCLET_2 = 163, /* 0xa3, reserved */ + M_SPARCLET_3 = 179, /* 0xb3, reserved */ + M_SPARCLET_4 = 195, /* 0xc3, reserved */ M_HP200 = 200, /* HP 200 (68010) BSD binary */ M_HP300 = (300 % 256), /* HP 300 (68020+68881) BSD binary */ - M_HPUX = (0x20c % 256)/* HP 200/300 HPUX binary */ + M_HPUX = (0x20c % 256), /* HP 200/300 HPUX binary */ + M_SPARCLET_5 = 211, /* 0xd3, reserved */ + M_SPARCLET_6 = 227, /* 0xe3, reserved */ + /* M_SPARCLET_7 = 243 / * 0xf3, reserved */ + M_SPARCLITE_LE = 243 }; #define N_DYNAMIC(exec) ((exec).a_info & 0x80000000) @@ -234,29 +329,50 @@ struct aoutdata { /* Segment size - needed for alignment of demand paged files. */ unsigned long segment_size; + /* Zmagic disk block size - need to align the start of the text + section in ZMAGIC binaries. Normally the same as page_size. */ + unsigned long zmagic_disk_block_size; + unsigned exec_bytes_size; unsigned vma_adjusted : 1; /* used when a bfd supports several highly similar formats */ - enum { - default_format = 0, - gnu_encap_format } subformat; - - enum { - undecided_magic = 0, - z_magic, - o_magic, - n_magic } magic; + enum + { + default_format = 0, + /* Used on HP 9000/300 running HP/UX. See hp300hpux.c. */ + gnu_encap_format, + /* Used on Linux, 386BSD, etc. See include/aout/aout64.h. */ + q_magic_format + } subformat; + + enum + { + undecided_magic = 0, + z_magic, + o_magic, + n_magic + } magic; + + /* A buffer for find_nearest_line. */ + char *line_buf; /* The external symbol information. */ struct external_nlist *external_syms; bfd_size_type external_sym_count; + bfd_window sym_window; char *external_strings; bfd_size_type external_string_size; + bfd_window string_window; struct aout_link_hash_entry **sym_hashes; /* A pointer for shared library information. */ PTR dynamic_info; + + /* A mapping from local symbols to offsets into the global offset + table, used when linking on SunOS. This is indexed by the symbol + index. */ + bfd_vma *local_got_offsets; }; struct aout_data_struct { @@ -277,8 +393,10 @@ struct aout_data_struct { #define obj_aout_subformat(bfd) (adata(bfd).subformat) #define obj_aout_external_syms(bfd) (adata(bfd).external_syms) #define obj_aout_external_sym_count(bfd) (adata(bfd).external_sym_count) +#define obj_aout_sym_window(bfd) (adata(bfd).sym_window) #define obj_aout_external_strings(bfd) (adata(bfd).external_strings) #define obj_aout_external_string_size(bfd) (adata(bfd).external_string_size) +#define obj_aout_string_window(bfd) (adata(bfd).string_window) #define obj_aout_sym_hashes(bfd) (adata(bfd).sym_hashes) #define obj_aout_dynamic_info(bfd) (adata(bfd).dynamic_info) @@ -286,22 +404,41 @@ struct aout_data_struct { macro is only ever applied to an asymbol */ #define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd)) +/* Information we keep for each a.out section. This is currently only + used by the a.out backend linker. */ + +struct aout_section_data_struct +{ + /* The unswapped relocation entries for this section. */ + PTR relocs; +}; + +#define aout_section_data(s) \ + ((struct aout_section_data_struct *) (s)->used_by_bfd) + +#define set_aout_section_data(s,v) \ + ((s)->used_by_bfd = (PTR)&(v)->relocs) + /* Prototype declarations for functions defined in aoutx.h */ boolean NAME(aout,squirt_out_relocs) PARAMS ((bfd *abfd, asection *section)); -bfd_target * +boolean +NAME(aout,make_sections) PARAMS ((bfd *)); + +const bfd_target * NAME(aout,some_aout_object_p) PARAMS ((bfd *abfd, - struct internal_exec *execp, - bfd_target * (*callback)(bfd *))); + struct internal_exec *execp, + const bfd_target *(*callback)(bfd *))); boolean NAME(aout,mkobject) PARAMS ((bfd *abfd)); enum machine_type NAME(aout,machine_type) PARAMS ((enum bfd_architecture arch, - unsigned long machine)); + unsigned long machine, + boolean *unknown)); boolean NAME(aout,set_arch_mach) PARAMS ((bfd *abfd, enum bfd_architecture arch, @@ -317,6 +454,13 @@ NAME(aout,set_section_contents) PARAMS ((bfd *abfd, sec_ptr section, asymbol * NAME(aout,make_empty_symbol) PARAMS ((bfd *abfd)); +boolean +NAME(aout,translate_symbol_table) PARAMS ((bfd *, aout_symbol_type *, + struct external_nlist *, + bfd_size_type, char *, + bfd_size_type, + boolean dynamic)); + boolean NAME(aout,slurp_symbol_table) PARAMS ((bfd *abfd)); @@ -332,6 +476,17 @@ NAME(aout,get_symtab_upper_bound) PARAMS ((bfd *abfd)); long NAME(aout,get_symtab) PARAMS ((bfd *abfd, asymbol **location)); +void +NAME(aout,swap_ext_reloc_in) PARAMS ((bfd *, struct reloc_ext_external *, + arelent *, asymbol **, bfd_size_type)); +void +NAME(aout,swap_std_reloc_in) PARAMS ((bfd *, struct reloc_std_external *, + arelent *, asymbol **, bfd_size_type)); + +reloc_howto_type * +NAME(aout,reloc_type_lookup) PARAMS ((bfd *abfd, + bfd_reloc_code_real_type code)); + boolean NAME(aout,slurp_reloc_table) PARAMS ((bfd *abfd, sec_ptr asect, asymbol **symbols)); @@ -362,6 +517,13 @@ NAME(aout,find_nearest_line) PARAMS ((bfd *abfd, asection *section, asymbol **symbols, bfd_vma offset, CONST char **filename_ptr, CONST char **functionname_ptr, unsigned int *line_ptr)); +long +NAME(aout,read_minisymbols) PARAMS ((bfd *, boolean, PTR *, unsigned int *)); + +asymbol * +NAME(aout,minisymbol_to_symbol) PARAMS ((bfd *, boolean, const PTR, + asymbol *)); + int NAME(aout,sizeof_headers) PARAMS ((bfd *abfd, boolean exec)); @@ -377,6 +539,17 @@ void NAME(aout,swap_exec_header_out) PARAMS ((bfd *abfd, struct internal_exec *execp, struct external_exec *raw_bytes)); +struct bfd_hash_entry * +NAME(aout,link_hash_newfunc) + PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); + +boolean +NAME(aout,link_hash_table_init) + PARAMS ((struct aout_link_hash_table *, bfd *, + struct bfd_hash_entry *(*) (struct bfd_hash_entry *, + struct bfd_hash_table *, + const char *))); + struct bfd_link_hash_table * NAME(aout,link_hash_table_create) PARAMS ((bfd *)); @@ -391,30 +564,17 @@ NAME(aout,final_link) PARAMS ((bfd *, struct bfd_link_info *, boolean NAME(aout,bfd_free_cached_info) PARAMS ((bfd *)); -/* Prototypes for functions in stab-syms.c. */ - -CONST char * -aout_stab_name PARAMS ((int code)); - /* A.out uses the generic versions of these routines... */ -#define aout_32_get_section_contents bfd_generic_get_section_contents +#define aout_32_get_section_contents _bfd_generic_get_section_contents -#define aout_64_get_section_contents bfd_generic_get_section_contents +#define aout_64_get_section_contents _bfd_generic_get_section_contents #ifndef NO_WRITE_HEADER_KLUDGE #define NO_WRITE_HEADER_KLUDGE 0 #endif -#ifndef aout_32_bfd_copy_private_section_data -#define aout_32_bfd_copy_private_section_data \ - ((boolean (*) PARAMS ((bfd *, asection *, bfd *, asection *))) bfd_true) -#endif -#ifndef aout_32_bfd_copy_private_bfd_data -#define aout_32_bfd_copy_private_bfd_data \ - ((boolean (*) PARAMS ((bfd *, bfd *))) bfd_true) -#endif -#ifndef aout_32_bfd_is_local_label -#define aout_32_bfd_is_local_label bfd_generic_is_local_label +#ifndef aout_32_bfd_is_local_label_name +#define aout_32_bfd_is_local_label_name bfd_generic_is_local_label_name #endif #ifndef WRITE_HEADERS @@ -434,23 +594,31 @@ aout_stab_name PARAMS ((int code)); obj_reloc_entry_size (abfd)); \ NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \ \ - bfd_seek (abfd, (file_ptr) 0, SEEK_SET); \ - bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd); \ + if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0) return false; \ + if (bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd) \ + != EXEC_BYTES_SIZE) \ + return false; \ /* Now write out reloc info, followed by syms and strings */ \ \ if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \ && bfd_get_symcount (abfd) != 0) \ - { \ - bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET); \ + { \ + if (bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET) != 0) \ + return false; \ \ - if (! NAME(aout,write_syms)(abfd)) return false; \ + if (! NAME(aout,write_syms)(abfd)) return false; \ + } \ \ - bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET); \ + if (bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET) != 0) \ + return false; \ + if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) \ + return false; \ \ - if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) return false; \ - bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET); \ - \ - if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) return false; \ - } \ + if (bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET) != 0) \ + return false; \ + if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) \ + return false; \ } #endif + +#endif /* ! defined (LIBAOUT_H) */