#ifndef __A_OUT_GNU_H__
#define __A_OUT_GNU_H__
-#include "reloc.h"
+#include "aout/reloc.h"
#define __GNU_EXEC_MACROS__
will lay out the same sizes or alignments. */
struct exec_bytes {
- unsigned char a_info[4];
- unsigned char a_text[4];
- unsigned char a_data[4];
- unsigned char a_bss[4];
- unsigned char a_syms[4];
- unsigned char a_entry[4];
- unsigned char a_trsize[4];
- unsigned char a_drsize[4];
+ unsigned char a_info[4];
+ unsigned char a_text[4];
+ unsigned char a_data[4];
+ unsigned char a_bss[4];
+ unsigned char a_syms[4];
+ unsigned char a_entry[4];
+ unsigned char a_trsize[4];
+ unsigned char a_drsize[4];
};
/* How big the "struct exec" is on disk */
struct exec
{
- unsigned long a_info; /* Use macros N_MAGIC, etc for access */
- unsigned a_text; /* length of text, in bytes */
- unsigned a_data; /* length of data, in bytes */
- unsigned a_bss; /* length of uninitialized data area for file, in bytes */
- unsigned a_syms; /* length of symbol table data in file, in bytes */
- unsigned a_entry; /* start address */
- unsigned a_trsize; /* length of relocation info for text, in bytes */
- unsigned a_drsize; /* length of relocation info for data, in bytes */
+ unsigned long a_info; /* Use macros N_MAGIC, etc for access */
+ unsigned a_text; /* length of text, in bytes */
+ unsigned a_data; /* length of data, in bytes */
+ unsigned a_bss; /* length of uninitialized data area for file, in bytes */
+ unsigned a_syms; /* length of symbol table data in file, in bytes */
+ unsigned a_entry; /* start address */
+ unsigned a_trsize; /* length of relocation info for text, in bytes */
+ unsigned a_drsize; /* length of relocation info for data, in bytes */
};
#endif /* __STRUCT_EXEC_OVERRIDE__ */
#undef M_68020
#undef M_SPARC
enum machine_type {
- M_UNKNOWN = 0,
- M_68010 = 1,
- M_68020 = 2,
- M_SPARC = 3,
- /* skip a bunch so we don't run into any of sun's numbers */
- M_386 = 100,
- M_29K = 101,
+ M_UNKNOWN = 0,
+ M_68010 = 1,
+ M_68020 = 2,
+ M_SPARC = 3,
+ /* skip a bunch so we don't run into any of sun's numbers */
+ M_386 = 100,
+ M_29K = 101,
+ M_RS6000 = 102, /* IBM RS/6000 */
+ /* HP/BSD formats */
+ M_HP200 = 200, /* hp200 (68010) BSD binary */
+ M_HP300 = 300, /* hp300 (68020+68881) BSD binary */
+ M_HPUX23 = 0x020C, /* hp200/300 HPUX binary */
};
#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))
+ ((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)))
+ ((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))
+ ((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))
+ ((exec).a_info = \
+ ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))
/* Code indicating object file or impure executable. */
#define OMAGIC 0407
#ifndef N_BADMAG
#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \
- && N_MAGIC(x) != NMAGIC \
- && N_MAGIC(x) != ZMAGIC)
+ && N_MAGIC(x) != NMAGIC \
+ && N_MAGIC(x) != ZMAGIC)
#endif
-/* This complexity is for encapsulated COFF support */
+/* By default, segment size is constant. But on some machines, it can
+ be a function of the a.out header (e.g. machine type). */
+#ifndef N_SEGSIZE
+#define N_SEGSIZE(x) SEGMENT_SIZE
+#endif
+
+ /* This complexity is for encapsulated COFF support */
#ifndef _N_HDROFF
-#define _N_HDROFF(x) (SEGMENT_SIZE - sizeof (struct exec))
+#define _N_HDROFF(x) (N_SEGSIZE(x) - sizeof (struct exec))
#endif
#ifndef N_TXTOFF
#define N_TXTOFF(x) (N_MAGIC(x) == ZMAGIC ? \
- _N_HDROFF((x)) + sizeof (struct exec) : \
- sizeof (struct exec))
+ _N_HDROFF((x)) + sizeof (struct exec) : \
+ sizeof (struct exec))
#endif
#ifndef N_TXTADDR
#define N_TXTADDR(x) 0
#endif
-
+
#ifndef N_DATADDR
#define N_DATADDR(x) \
(N_MAGIC(x)==OMAGIC? (N_TXTADDR(x)+(x).a_text) \
- : (SEGMENT_SIZE + ((N_TXTADDR(x)+(x).a_text-1) & ~(SEGMENT_SIZE-1))))
+ : (N_SEGSIZE(x) + ((N_TXTADDR(x)+(x).a_text-1) & ~(N_SEGSIZE(x)-1))))
#endif
/* Address of bss segment in memory after it is loaded. */
#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)
\f
struct nlist {
- union {
- char *n_name;
- struct nlist *n_next;
- long n_strx;
- } n_un;
- unsigned char n_type;
- char n_other;
- short n_desc;
- unsigned long n_value;
+ union {
+ char *n_name;
+ struct nlist *n_next;
+ long n_strx;
+ } n_un;
+ unsigned char n_type;
+ char n_other;
+ short n_desc;
+ unsigned long n_value;
};
#define N_UNDF 0
#define N_TEXT 4
#define N_DATA 6
#define N_BSS 8
-#define N_FN 15
+#define N_COMM 0x12 /* common (visible in shared lib commons) */
+#define N_FN 0x1F /* File name of a .o file */
+/* Note: N_EXT can only usefully be OR-ed with N_UNDF, N_ABS, N_TEXT,
+ N_DATA, or N_BSS. When the low-order bit of other types is set,
+ (e.g. N_WARNING versus N_FN), they are two different types. */
#define N_EXT 1
#define N_TYPE 036
#define N_STAB 0340
/* The following type indicates the definition of a symbol as being
an indirect reference to another symbol. The other symbol
appears as an undefined reference, immediately following this symbol.
-
+
Indirection is asymmetrical. The other symbol's value will be used
to satisfy requests for the indirect symbol, but not vice versa.
If the other symbol does not have a definition, libraries will
Space is allocated for the set in the text section, and each set
element's value is stored into one word of the space.
The first word of the space is the length of the set (number of elements).
-
+
The address of the set is made into an N_SETV symbol
whose name is the same as the name of the set.
This symbol acts like a N_DATA global symbol
/* This is output from LD. */
#define N_SETV 0x1C /* Pointer to set vector in data area. */
+
+/* Warning symbol. The text gives a warning message, the next symbol
+ in the table will be undefined. When the symbol is referenced, the
+ message is printed. */
+
+#define N_WARNING 0x1e
\f
/* This structure describes a single relocation to be performed.
The text-relocation section of the file is a vector of these structures,
/* The following enum and struct were borrowed from SunOS's
/usr/include/sun4/a.out.h and extended to handle
other machines. It is currently used on SPARC and AMD 29000.
-
+
reloc_ext_bytes is how it looks on disk. reloc_info_extended is
how we might process it on a native host. */
struct reloc_ext_bytes {
- unsigned char r_address[4];
- unsigned char r_index[3];
- unsigned char r_bits[1];
- unsigned char r_addend[4];
+ unsigned char r_address[4];
+ unsigned char r_index[3];
+ unsigned char r_bits[1];
+ unsigned char r_addend[4];
};
#define RELOC_EXT_BITS_EXTERN_BIG 0x80
struct reloc_info_extended
{
- unsigned long r_address;
- unsigned int r_index:24;
+ unsigned long r_address;
+ unsigned int r_index:24;
# define r_symbolnum r_index
- unsigned r_extern:1;
- unsigned :2;
- enum reloc_type r_type:5;
- long int r_addend;
+ unsigned r_extern:1;
+ unsigned :2;
+ /* RS/6000 compiler does not support enum bitfield
+ enum reloc_type r_type:5; */
+ enum reloc_type r_type;
+ long int r_addend;
};
/* The standard, old-fashioned, Berkeley compatible relocation struct */
struct reloc_std_bytes {
- unsigned char r_address[4];
- unsigned char r_index[3];
- unsigned char r_bits[1];
+ unsigned char r_address[4];
+ unsigned char r_index[3];
+ unsigned char r_bits[1];
};
#define RELOC_STD_BITS_PCREL_BIG 0x80
#define RELOC_STD_SIZE 8 /* Bytes per relocation entry */
+#ifndef CUSTOM_RELOC_FORMAT
struct relocation_info
{
- /* Address (within segment) to be relocated. */
- int r_address;
- /* The meaning of r_symbolnum depends on r_extern. */
- unsigned int r_symbolnum:24;
- /* Nonzero means value is a pc-relative offset
- and it should be relocated for changes in its own address
- as well as for changes in the symbol or section specified. */
- unsigned int r_pcrel:1;
- /* Length (as exponent of 2) of the field to be relocated.
- Thus, a value of 2 indicates 1<<2 bytes. */
- unsigned int r_length:2;
- /* 1 => relocate with value of symbol.
- r_symbolnum is the index of the symbol
- in file's the symbol table.
- 0 => relocate with the address of a segment.
- r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS
- (the N_EXT bit may be set also, but signifies nothing). */
- unsigned int r_extern:1;
- /* The next three bits are for SunOS shared libraries, and seem to
- be undocumented. */
- unsigned int r_baserel:1; /* Linkage table relative */
- unsigned int r_jmptable:1; /* pc-relative to jump table */
-
+ /* Address (within segment) to be relocated. */
+ int r_address;
+ /* The meaning of r_symbolnum depends on r_extern. */
+ unsigned int r_symbolnum:24;
+ /* Nonzero means value is a pc-relative offset
+ and it should be relocated for changes in its own address
+ as well as for changes in the symbol or section specified. */
+ unsigned int r_pcrel:1;
+ /* Length (as exponent of 2) of the field to be relocated.
+ Thus, a value of 2 indicates 1<<2 bytes. */
+ unsigned int r_length:2;
+ /* 1 => relocate with value of symbol.
+ r_symbolnum is the index of the symbol
+ in file's the symbol table.
+ 0 => relocate with the address of a segment.
+ r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS
+ (the N_EXT bit may be set also, but signifies nothing). */
+ unsigned int r_extern:1;
+ /* The next three bits are for SunOS shared libraries, and seem to
+ be undocumented. */
+ unsigned int r_baserel:1; /* Linkage table relative */
+ unsigned int r_jmptable:1; /* pc-relative to jump table */
+
#ifdef TC_NS32K
#define r_bsr r_baserel
#define r_disp r_jmptable
#endif /* TC_NS32K */
-
- unsigned int r_relative:1; /* "relative relocation" */
- /* unused */
- unsigned int r_pad:1; /* Padding -- set to zero */
+
+ unsigned int r_relative:1; /* "relative relocation" */
+ /* unused */
+ unsigned int r_pad:1; /* Padding -- set to zero */
};
+#endif /* CUSTOM_RELOC_FORMAT */
#endif /* __A_OUT_GNU_H__ */
+
+/* end of a.out.gnu.h */
projects / binutils.git / blobdiff