#define BYTES_IN_WORD 4
#endif
-#define adata(bfd) ((struct aoutdata *) ((bfd)->tdata))
-#define exec_hdr(bfd) (adata(bfd)->hdr)
-#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)
-
/* Declare these types at file level, since they are used in parameter
lists, which have wierd scope. */
struct external_exec;
struct internal_exec;
+/* This is the layout in memory of a "struct exec" while we process it.
+ All 'lengths' are given as a number of bytes.
+ All 'alignments' are for relinkable files only; an alignment of
+ 'n' indicates the corresponding segment must begin at an
+ address that is a multiple of (2**n). */
+
+struct internal_exec
+{
+ long a_info; /* Magic number and flags, packed */
+ bfd_vma a_text; /* length of text, in bytes */
+ bfd_vma a_data; /* length of data, in bytes */
+ bfd_vma a_bss; /* length of uninitialized data area in mem */
+ bfd_vma a_syms; /* length of symbol table data in file */
+ bfd_vma a_entry; /* start address */
+ bfd_vma a_trsize; /* length of text's relocation info, in bytes */
+ bfd_vma a_drsize; /* length of data's relocation info, in bytes */
+ /* Added for i960 */
+ bfd_vma a_tload; /* Text runtime load address */
+ bfd_vma a_dload; /* Data runtime load address */
+ unsigned char a_talign; /* Alignment of text segment */
+ unsigned char a_dalign; /* Alignment of data segment */
+ unsigned char a_balign; /* Alignment of bss segment */
+};
+
+/* Magic number is written
+< MSB >
+3130292827262524232221201918171615141312111009080706050403020100
+< FLAGS >< MACHINE TYPE >< 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 */
+ M_386 = 100,
+ M_29K = 101,
+ 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 */
+};
+
+#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) \
+((exec).a_info = ((magic) & 0xffff) \
+ | (((int)(type) & 0xff) << 16) \
+ | (((flags) & 0xff) << 24))
+
+#define N_SET_MAGIC(exec, magic) \
+((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))
+
+#define N_SET_MACHTYPE(exec, machtype) \
+((exec).a_info = \
+ ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))
+
+#define N_SET_FLAGS(exec, flags) \
+((exec).a_info = \
+ ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
+
typedef struct aout_symbol {
asymbol symbol;
short desc;
unsigned char type;
} aout_symbol_type;
+/* The `tdata' struct for all a.out-like object file formats.
+ Various things depend on this struct being around any time an a.out
+ file is being handled. An example is dbxread.c in GDB. */
+
struct aoutdata {
- struct internal_exec *hdr; /* exec file header */
+ struct internal_exec *hdr; /* exec file header */
aout_symbol_type *symbols; /* symtab for input bfd */
-
/* For ease, we do this */
asection *textsec;
file_ptr sym_filepos;
file_ptr str_filepos;
- /* Size of a relocation entry */
+ /* Size of a relocation entry in external form */
unsigned reloc_entry_size;
-};
+ /* Size of a symbol table entry in external form */
+ unsigned symbol_entry_size;
-#define obj_outsymbols(bfd) ((PTR)(((struct aoutdata *) ((bfd)->tdata))->outsymbols))
+ /* Page size - needed for alignment of demand paged files. */
+ unsigned long page_size;
+ /* Segment size - needed for alignment of demand paged files. */
+ unsigned long segment_size;
-/* We take the address of the first element of an asymbol to ensure that the
- * macro is only ever applied to an asymbol */
-#define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
+ unsigned exec_bytes_size;
+};
-/*#define obj_symbols(bfd) ((((struct aoutdata *) ((bfd)->tdata))->symbols))*/
-#define obj_aout_symbols(bfd) ((((struct aoutdata *) (bfd)->tdata))->symbols)
-#define obj_arch_flags(bfd) ((((struct aoutdata *) (bfd)->tdata))->arch_flags)
+#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)
-#define get_tdata(x) ((struct aoutdata *)((x)->tdata))
+/* We take the address of the first element of an asymbol to ensure that the
+ macro is only ever applied to an asymbol */
+#define aout_symbol(asymbol) ((aout_symbol_type *)(&(asymbol)->the_bfd))
/* Prototype declarations for functions defined in aoutx.h */
PROTO (boolean, NAME(aout,squirt_out_relocs),(bfd *abfd, asection *section));
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,
/* Calculate the file positions of the parts of a newly read aout header */
#define WORK_OUT_FILE_POSITIONS(abfd, execp) \
+ /* The virtual memory addresses of the sections */ \
obj_datasec (abfd)->vma = N_DATADDR(*execp); \
obj_bsssec (abfd)->vma = N_BSSADDR(*execp); \
obj_textsec (abfd)->vma = N_TXTADDR(*execp); \
#define WRITE_HEADERS(abfd, execp) \
{ \
- if ((obj_textsec(abfd)->vma & 0xff )== EXEC_BYTES_SIZE) \
- abfd->flags |= D_PAGED; \
- else \
- abfd->flags &= ~D_PAGED; \
if (abfd->flags & D_PAGED) \
{ \
- execp->a_text = obj_textsec (abfd)->size + EXEC_BYTES_SIZE; \
+ 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 \
} \
if (abfd->flags & D_PAGED) \
{ \
- data_pad = ((obj_datasec(abfd)->size + PAGE_SIZE -1) \
- & (- PAGE_SIZE)) - obj_datasec(abfd)->size; \
+ data_pad = ALIGN(obj_datasec(abfd)->size, PAGE_SIZE) \
+ - obj_datasec(abfd)->size; \
\
if (data_pad > obj_bsssec(abfd)->size) \
execp->a_bss = 0; \
execp->a_bss = obj_bsssec (abfd)->size; \
} \
\
- execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_LIST_SIZE; \
+ execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \
execp->a_entry = bfd_get_start_address (abfd); \
\
execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \
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