/* BFD back-end data structures for a.out (and similar) files.
- Copyright (C) 1990-1991 Free Software Foundation, Inc.
+ Copyright 1990, 1991, 1992 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
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. */
-/* $Id$ */
-
-#ifdef __STDC__
-#define CAT3(a,b,c) a##b##c
-#else
-#define CAT3(a,b,c) a/**/b/**/c
-#endif
-
/* 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
#define GET_WORD bfd_h_get_64
-#define GET_SWORD (int64_type)GET_WORD
+#define GET_SWORD bfd_h_get_signed_64
#define PUT_WORD bfd_h_put_64
+#ifndef NAME
#define NAME(x,y) CAT3(x,_64_,y)
+#endif
#define JNAME(x) CAT(x,_64)
#define BYTES_IN_WORD 8
-#else
+#else /* ARCH_SIZE == 32 */
#define GET_WORD bfd_h_get_32
-#define GET_SWORD (int32_type)GET_WORD
+#define GET_SWORD bfd_h_get_signed_32
#define PUT_WORD bfd_h_put_32
+#ifndef NAME
#define NAME(x,y) CAT3(x,_32_,y)
+#endif
#define JNAME(x) CAT(x,_32)
#define BYTES_IN_WORD 4
-#endif
+#endif /* ARCH_SIZE==32 */
-/* Declare these types at file level, since they are used in parameter
- lists, which have wierd scope. */
+/* Declare at file level, since it isused in parameter lists, which
+ have weird scope. */
struct external_exec;
-struct internal_exec;
+
+/* Back-end information for various a.out targets. */
+struct aout_backend_data
+{
+ /* Are ZMAGIC files mapped contiguously? If so, the text section may
+ need more padding, if the segment size (granularity for memory access
+ control) is larger than the page size. */
+ unsigned char zmagic_mapped_contiguous;
+ /* If this flag is set, ZMAGIC/NMAGIC file headers get mapped in with the
+ text section, which starts immediately after the file header.
+ If not, the text section starts on the next page. */
+ unsigned char text_includes_header;
+
+ /* 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. */
+ /* ?? Perhaps a callback would be a better choice? Will this do anything
+ reasonable for a format that handles multiple CPUs with different
+ load addresses for each? */
+ bfd_vma default_text_vma;
+
+ /* Callback for setting the page and segment sizes, if they can't be
+ trivially determined from the architecture. */
+ boolean (*set_sizes) PARAMS ((bfd *));
+
+ /* zmagic files only. For go32, the length of the exec header contributes
+ to the size of the text section in the file for alignment purposes but
+ does *not* get counted in the length of the text section. */
+ unsigned char exec_header_not_counted;
+};
+#define aout_backend_info(abfd) \
+ ((CONST struct aout_backend_data *)((abfd)->xvec->backend_data))
/* This is the layout in memory of a "struct exec" while we process it.
All 'lengths' are given as a number of bytes.
unsigned char a_talign; /* Alignment of text segment */
unsigned char a_dalign; /* Alignment of data segment */
unsigned char a_balign; /* Alignment of bss segment */
+ char a_relaxable; /* Enough info for linker relax */
};
/* Magic number is written
3130292827262524232221201918171615141312111009080706050403020100
< FLAGS >< MACHINE TYPE >< MAGIC NUMBER >
*/
+/* Magic number for NetBSD is
+<MSB >
+3130292827262524232221201918171615141312111009080706050403020100
+< FLAGS >< >< MAGIC NUMBER >
+*/
+
enum machine_type {
M_UNKNOWN = 0,
M_68010 = 1,
M_68020 = 2,
M_SPARC = 3,
- /* skip a bunch so we dont run into any of suns numbers */
+ /* skip a bunch so we don't run into any of suns numbers */
M_386 = 100,
- M_29K = 101,
+ M_29K = 101, /* AMD 29000 */
+ M_386_DYNIX = 102, /* Sequent running dynix */
+ M_386_NETBSD = 134, /* NetBSD/386 binary */
+ M_MIPS1 = 151, /* MIPS R2000/R3000 binary */
+ M_MIPS2 = 152, /* MIPS R4000/R6000 binary */
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 */
};
#define N_DYNAMIC(exec) ((exec).a_info & 0x8000000)
-#define N_MAGIC(exec) ((exec).a_info & 0xffff)
-#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
-#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
-#define N_SET_INFO(exec, magic, type, flags) \
+#ifndef N_MAGIC
+# define N_MAGIC(exec) ((exec).a_info & 0xffff)
+#endif
+
+#ifndef N_MACHTYPE
+# define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))
+#endif
+
+#ifndef N_FLAGS
+# define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)
+#endif
+
+#ifndef N_SET_INFO
+# define N_SET_INFO(exec, magic, type, flags) \
((exec).a_info = ((magic) & 0xffff) \
| (((int)(type) & 0xff) << 16) \
| (((flags) & 0xff) << 24))
+#endif
-#define N_SET_MAGIC(exec, magic) \
+#ifndef N_SET_MAGIC
+# define N_SET_MAGIC(exec, magic) \
((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
+#endif
-#define N_SET_MACHTYPE(exec, machtype) \
+#ifndef N_SET_MACHTYPE
+# define N_SET_MACHTYPE(exec, machtype) \
((exec).a_info = \
((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
+#endif
-#define N_SET_FLAGS(exec, flags) \
+#ifndef N_SET_FLAGS
+# define N_SET_FLAGS(exec, flags) \
((exec).a_info = \
((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
+#endif
typedef struct aout_symbol {
asymbol symbol;
unsigned long segment_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;
+
+ /* The external symbol information. */
+ struct external_nlist *external_syms;
+ bfd_size_type external_sym_count;
+ char *external_strings;
+ struct aout_link_hash_entry **sym_hashes;
};
-#define adata(bfd) ((struct aoutdata *) ((bfd)->tdata))
-#define exec_hdr(bfd) (adata(bfd)->hdr)
-#define obj_aout_symbols(bfd) (adata(bfd)->symbols)
-#define obj_textsec(bfd) (adata(bfd)->textsec)
-#define obj_datasec(bfd) (adata(bfd)->datasec)
-#define obj_bsssec(bfd) (adata(bfd)->bsssec)
-#define obj_sym_filepos(bfd) (adata(bfd)->sym_filepos)
-#define obj_str_filepos(bfd) (adata(bfd)->str_filepos)
-#define obj_reloc_entry_size(bfd) (adata(bfd)->reloc_entry_size)
-#define obj_symbol_entry_size(bfd) (adata(bfd)->symbol_entry_size)
+struct aout_data_struct {
+ struct aoutdata a;
+ struct internal_exec e;
+};
+
+#define adata(bfd) ((bfd)->tdata.aout_data->a)
+#define exec_hdr(bfd) (adata(bfd).hdr)
+#define obj_aout_symbols(bfd) (adata(bfd).symbols)
+#define obj_textsec(bfd) (adata(bfd).textsec)
+#define obj_datasec(bfd) (adata(bfd).datasec)
+#define obj_bsssec(bfd) (adata(bfd).bsssec)
+#define obj_sym_filepos(bfd) (adata(bfd).sym_filepos)
+#define obj_str_filepos(bfd) (adata(bfd).str_filepos)
+#define obj_reloc_entry_size(bfd) (adata(bfd).reloc_entry_size)
+#define obj_symbol_entry_size(bfd) (adata(bfd).symbol_entry_size)
+#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_external_strings(bfd) (adata(bfd).external_strings)
+#define obj_aout_sym_hashes(bfd) (adata(bfd).sym_hashes)
/* We take the address of the first element of an asymbol to ensure that the
macro is only ever applied to an asymbol */
/* Prototype declarations for functions defined in aoutx.h */
-PROTO (boolean, NAME(aout,squirt_out_relocs),(bfd *abfd, asection *section));
+boolean
+NAME(aout,squirt_out_relocs) PARAMS ((bfd *abfd, asection *section));
+
+bfd_target *
+NAME(aout,some_aout_object_p) PARAMS ((bfd *abfd,
+ struct internal_exec *execp,
+ bfd_target * (*callback)(bfd *)));
+
+boolean
+NAME(aout,mkobject) PARAMS ((bfd *abfd));
-PROTO (bfd_target *, NAME(aout,some_aout_object_p), (bfd *abfd,
- struct internal_exec *execp,
- bfd_target *(*callback)()));
-PROTO (boolean, NAME(aout,mkobject), (bfd *abfd));
-PROTO (enum machine_type, NAME(aout,machine_type), (enum bfd_architecture arch,
- unsigned long machine));
-PROTO (boolean, NAME(aout,set_arch_mach), (bfd *abfd, enum bfd_architecture arch,
- unsigned long machine));
+enum machine_type
+NAME(aout,machine_type) PARAMS ((enum bfd_architecture arch,
+ unsigned long machine));
-PROTO (boolean, NAME(aout,new_section_hook), (bfd *abfd, asection *newsect));
-PROTO (boolean, NAME(aout,set_section_contents), (bfd *abfd, sec_ptr section,
+boolean
+NAME(aout,set_arch_mach) PARAMS ((bfd *abfd, enum bfd_architecture arch,
+ unsigned long machine));
+
+boolean
+NAME(aout,new_section_hook) PARAMS ((bfd *abfd, asection *newsect));
+
+boolean
+NAME(aout,set_section_contents) PARAMS ((bfd *abfd, sec_ptr section,
PTR location, file_ptr offset, bfd_size_type count));
-PROTO (asymbol *,NAME(aout,make_empty_symbol), (bfd *abfd));
-PROTO (boolean, NAME(aout,slurp_symbol_table), (bfd *abfd));
-PROTO (void, NAME(aout,write_syms), (bfd *abfd));
-PROTO (void, NAME(aout,reclaim_symbol_table), (bfd *abfd));
-PROTO (unsigned int, NAME(aout,get_symtab_upper_bound), (bfd *abfd));
-PROTO (unsigned int, NAME(aout,get_symtab), (bfd *abfd, asymbol **location));
-PROTO (boolean, NAME(aout,slurp_reloc_table), (bfd *abfd, sec_ptr asect,
- asymbol **symbols));
-PROTO (unsigned int, NAME(aout,canonicalize_reloc), (bfd *abfd, sec_ptr section,
- arelent **relptr, asymbol **symbols));
-PROTO (unsigned int, NAME(aout,get_reloc_upper_bound), (bfd *abfd, sec_ptr asect));
-PROTO (void, NAME(aout,reclaim_reloc), (bfd *ignore_abfd, sec_ptr ignore));
-PROTO (alent *, NAME(aout,get_lineno), (bfd *ignore_abfd, asymbol *ignore_symbol));
-PROTO (void, NAME(aout,print_symbol), (bfd *ignore_abfd, PTR file,
+asymbol *
+NAME(aout,make_empty_symbol) PARAMS ((bfd *abfd));
+
+boolean
+NAME(aout,slurp_symbol_table) PARAMS ((bfd *abfd));
+
+boolean
+NAME(aout,write_syms) PARAMS ((bfd *abfd));
+
+void
+NAME(aout,reclaim_symbol_table) PARAMS ((bfd *abfd));
+
+unsigned int
+NAME(aout,get_symtab_upper_bound) PARAMS ((bfd *abfd));
+
+unsigned int
+NAME(aout,get_symtab) PARAMS ((bfd *abfd, asymbol **location));
+
+boolean
+NAME(aout,slurp_reloc_table) PARAMS ((bfd *abfd, sec_ptr asect,
+ asymbol **symbols));
+
+unsigned int
+NAME(aout,canonicalize_reloc) PARAMS ((bfd *abfd, sec_ptr section,
+ arelent **relptr, asymbol **symbols));
+
+unsigned int
+NAME(aout,get_reloc_upper_bound) PARAMS ((bfd *abfd, sec_ptr asect));
+
+void
+NAME(aout,reclaim_reloc) PARAMS ((bfd *ignore_abfd, sec_ptr ignore));
+
+alent *
+NAME(aout,get_lineno) PARAMS ((bfd *ignore_abfd, asymbol *ignore_symbol));
+
+void
+NAME(aout,print_symbol) PARAMS ((bfd *ignore_abfd, PTR file,
asymbol *symbol, bfd_print_symbol_type how));
-PROTO (boolean, NAME(aout,close_and_cleanup), (bfd *abfd));
-PROTO (boolean, NAME(aout,find_nearest_line), (bfd *abfd, asection *section,
+
+void
+NAME(aout,get_symbol_info) PARAMS ((bfd *ignore_abfd,
+ asymbol *symbol, symbol_info *ret));
+
+boolean
+NAME(aout,close_and_cleanup) PARAMS ((bfd *abfd));
+
+boolean
+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));
-PROTO (int, NAME(aout,sizeof_headers), (bfd *abfd, boolean exec));
+int
+NAME(aout,sizeof_headers) PARAMS ((bfd *abfd, boolean exec));
+
+boolean
+NAME(aout,adjust_sizes_and_vmas) PARAMS ((bfd *abfd,
+ bfd_size_type *text_size, file_ptr *text_end));
-PROTO (void, NAME(aout,swap_exec_header_in), (bfd *abfd,
- struct external_exec *raw_bytes, struct internal_exec *execp));
+void
+NAME(aout,swap_exec_header_in) PARAMS ((bfd *abfd,
+ struct external_exec *raw_bytes, struct internal_exec *execp));
-PROTO (void, NAME(aout,swap_exec_header_out),(bfd *abfd, struct internal_exec *execp,
- struct external_exec *raw_bytes));
+void
+NAME(aout,swap_exec_header_out) PARAMS ((bfd *abfd,
+ struct internal_exec *execp, struct external_exec *raw_bytes));
+
+struct bfd_link_hash_table *
+NAME(aout,link_hash_table_create) PARAMS ((bfd *));
+
+boolean
+NAME(aout,link_add_symbols) PARAMS ((bfd *, struct bfd_link_info *));
+
+boolean
+NAME(aout,final_link) PARAMS ((bfd *, struct bfd_link_info *,
+ void (*) (bfd *, file_ptr *, file_ptr *,
+ file_ptr *)));
/* Prototypes for functions in stab-syms.c. */
-PROTO(char *, aout_stab_name, (int code));
+CONST char *
+aout_stab_name PARAMS ((int code));
/* A.out uses the generic versions of these routines... */
#define aout_64_get_section_contents bfd_generic_get_section_contents
#define aout_64_close_and_cleanup bfd_generic_close_and_cleanup
+#ifndef NO_WRITE_HEADER_KLUDGE
+#define NO_WRITE_HEADER_KLUDGE 0
+#endif
-/* Calculate the file positions of the parts of a newly read aout header */
-#define WORK_OUT_FILE_POSITIONS(abfd, execp) \
- obj_textsec (abfd)->size = N_TXTSIZE(*execp); \
- \
- /* The virtual memory addresses of the sections */ \
- obj_textsec (abfd)->vma = N_TXTADDR(*execp); \
- obj_datasec (abfd)->vma = N_DATADDR(*execp); \
- obj_bsssec (abfd)->vma = N_BSSADDR(*execp); \
- \
- /* The file offsets of the sections */ \
- obj_textsec (abfd)->filepos = N_TXTOFF (*execp); \
- obj_datasec (abfd)->filepos = N_DATOFF (*execp); \
- \
- /* The file offsets of the relocation info */ \
- obj_textsec (abfd)->rel_filepos = N_TRELOFF(*execp); \
- obj_datasec (abfd)->rel_filepos = N_DRELOFF(*execp); \
- \
- /* The file offsets of the string table and symbol table. */ \
- obj_sym_filepos (abfd) = N_SYMOFF (*execp); \
- obj_str_filepos (abfd) = N_STROFF (*execp); \
-
-
+#ifndef WRITE_HEADERS
#define WRITE_HEADERS(abfd, execp) \
{ \
- if (abfd->flags & D_PAGED) \
- { \
- execp->a_text = obj_textsec (abfd)->size; \
- /* Kludge to distinguish old- and new-style ZMAGIC. \
- The latter includes the exec header in the text size. */ \
- if (obj_textsec(abfd)->filepos == EXEC_BYTES_SIZE) \
- execp->a_text += EXEC_BYTES_SIZE; \
- N_SET_MAGIC (*execp, ZMAGIC); \
- } \
- else \
- { \
- execp->a_text = obj_textsec (abfd)->size; \
- if (abfd->flags & WP_TEXT) \
- { N_SET_MAGIC (*execp, NMAGIC); } \
- else \
- { N_SET_MAGIC(*execp, OMAGIC); } \
- } \
- if (abfd->flags & D_PAGED) \
- { \
- data_pad = ALIGN(obj_datasec(abfd)->size, PAGE_SIZE) \
- - obj_datasec(abfd)->size; \
- \
- if (data_pad > obj_bsssec(abfd)->size) \
- execp->a_bss = 0; \
- else \
- execp->a_bss = obj_bsssec(abfd)->size - data_pad; \
- execp->a_data = obj_datasec(abfd)->size + data_pad; \
- } \
- else \
- { \
- execp->a_data = obj_datasec (abfd)->size; \
- execp->a_bss = obj_bsssec (abfd)->size; \
- } \
+ bfd_size_type text_size; /* dummy vars */ \
+ file_ptr text_end; \
+ if (adata(abfd).magic == undecided_magic) \
+ NAME(aout,adjust_sizes_and_vmas) (abfd, &text_size, &text_end); \
\
execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
execp->a_entry = bfd_get_start_address (abfd); \
obj_reloc_entry_size (abfd)); \
NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \
\
- bfd_seek (abfd, 0L, false); \
+ bfd_seek (abfd, (file_ptr) 0, SEEK_SET); \
bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd); \
/* Now write out reloc info, followed by syms and strings */ \
\
- if (bfd_get_symcount (abfd) != 0) \
+ if (bfd_get_outsymbols (abfd) != (asymbol **) NULL \
+ && bfd_get_symcount (abfd) != 0) \
{ \
- bfd_seek (abfd, \
- (long)(N_SYMOFF(*execp)), false); \
+ bfd_seek (abfd, (file_ptr)(N_SYMOFF(*execp)), SEEK_SET); \
\
- NAME(aout,write_syms)(abfd); \
+ if (! NAME(aout,write_syms)(abfd)) return false; \
\
- bfd_seek (abfd, (long)(N_TRELOFF(*execp)), false); \
+ bfd_seek (abfd, (file_ptr)(N_TRELOFF(*execp)), SEEK_SET); \
\
if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) return false; \
- bfd_seek (abfd, (long)(N_DRELOFF(*execp)), false); \
+ bfd_seek (abfd, (file_ptr)(N_DRELOFF(*execp)), SEEK_SET); \
\
if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) return false; \
} \
}
+#endif
projects / deliverable / binutils-gdb.git / blobdiff