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a.out.h
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#ifndef __A_OUT_GNU_H__ #define __A_OUT_GNU_H__ #include <bits/a.out.h> #define __GNU_EXEC_MACROS__ struct exec { unsigned long a_info; /* Use macros N_MAGIC, etc for access. */ unsigned int a_text; /* Length of text, in bytes. */ unsigned int a_data; /* Length of data, in bytes. */ unsigned int a_bss; /* Length of uninitialized data area for file, in bytes. */ unsigned int a_syms; /* Length of symbol table data in file, in bytes. */ unsigned int a_entry; /* Start address. */ unsigned int a_trsize;/* Length of relocation info for text, in bytes. */ unsigned int a_drsize;/* Length of relocation info for data, in bytes. */ }; enum machine_type { M_OLDSUN2 = 0, M_68010 = 1, M_68020 = 2, M_SPARC = 3, M_386 = 100, M_MIPS1 = 151, M_MIPS2 = 152 }; #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)) /* Code indicating object file or impure executable. */ #define OMAGIC 0407 /* Code indicating pure executable. */ #define NMAGIC 0410 /* Code indicating demand-paged executable. */ #define ZMAGIC 0413 /* This indicates a demand-paged executable with the header in the text. The first page is unmapped to help trap NULL pointer references. */ #define QMAGIC 0314 /* Code indicating core file. */ #define CMAGIC 0421 #define N_TRSIZE(a) ((a).a_trsize) #define N_DRSIZE(a) ((a).a_drsize) #define N_SYMSIZE(a) ((a).a_syms) #define N_BADMAG(x) \ (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \ && N_MAGIC(x) != ZMAGIC && N_MAGIC(x) != QMAGIC) #define _N_HDROFF(x) (1024 - sizeof (struct exec)) #define N_TXTOFF(x) \ (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) \ : (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec))) #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) #define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x)) #define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x)) #define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x)) /* Address of text segment in memory after it is loaded. */ #define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? 4096 : 0) /* Address of data segment in memory after it is loaded. */ #define SEGMENT_SIZE 1024 #define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1)) #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) #define N_DATADDR(x) \ (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \ : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) #define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) #if !defined (N_NLIST_DECLARED) 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; }; #endif /* no N_NLIST_DECLARED. */ #define N_UNDF 0 #define N_ABS 2 #define N_TEXT 4 #define N_DATA 6 #define N_BSS 8 #define N_FN 15 #define N_EXT 1 #define N_TYPE 036 #define N_STAB 0340 #define N_INDR 0xa #define N_SETA 0x14 /* Absolute set element symbol. */ #define N_SETT 0x16 /* Text set element symbol. */ #define N_SETD 0x18 /* Data set element symbol. */ #define N_SETB 0x1A /* Bss set element symbol. */ #define N_SETV 0x1C /* Pointer to set vector in data area. */ #if !defined (N_RELOCATION_INFO_DECLARED) /* This structure describes a single relocation to be performed. The text-relocation section of the file is a vector of these structures, all of which apply to the text section. Likewise, the data-relocation section applies to the data section. */ struct relocation_info { int r_address; unsigned int r_symbolnum:24; unsigned int r_pcrel:1; unsigned int r_length:2; unsigned int r_extern:1; unsigned int r_pad:4; }; #endif /* no N_RELOCATION_INFO_DECLARED. */ #endif /* __A_OUT_GNU_H__ */