1 #ifndef __A_OUT_GNU_H__ 2 #define __A_OUT_GNU_H__ 3 4 #include <bits/a.out.h> 5 6 #define __GNU_EXEC_MACROS__ 7 8 struct exec 9 { 10 unsigned char a_dynamic:1; /* A __DYNAMIC is in this image. */ 11 unsigned char a_toolversion:7; 12 unsigned char a_machtype; 13 unsigned short a_info; 14 unsigned int a_text; /* Length of text, in bytes. */ 15 unsigned int a_data; /* Length of data, in bytes. */ 16 unsigned int a_bss; /* Length of bss, in bytes. */ 17 unsigned int a_syms; /* Length of symbol table, in bytes. */ 18 unsigned int a_entry; /* Where program begins. */ 19 unsigned int a_trsize; 20 unsigned int a_drsize; 21 }; 22 23 enum machine_type 24 { 25 M_OLDSUN2 = 0, 26 M_68010 = 1, 27 M_68020 = 2, 28 M_SPARC = 3, 29 M_386 = 100, 30 M_MIPS1 = 151, 31 M_MIPS2 = 152 32 }; 33 34 #define N_MAGIC(exec) ((exec).a_info & 0xffff) 35 #define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) 36 #define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff) 37 #define N_SET_INFO(exec, magic, type, flags) \ 38 ((exec).a_info = ((magic) & 0xffff) \ 39 | (((int)(type) & 0xff) << 16) \ 40 | (((flags) & 0xff) << 24)) 41 #define N_SET_MAGIC(exec, magic) \ 42 ((exec).a_info = ((exec).a_info & 0xffff0000) | ((magic) & 0xffff)) 43 #define N_SET_MACHTYPE(exec, machtype) \ 44 ((exec).a_info = \ 45 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16)) 46 #define N_SET_FLAGS(exec, flags) \ 47 ((exec).a_info = \ 48 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24)) 49 50 /* Code indicating object file or impure executable. */ 51 #define OMAGIC 0407 52 /* Code indicating pure executable. */ 53 #define NMAGIC 0410 54 /* Code indicating demand-paged executable. */ 55 #define ZMAGIC 0413 56 /* This indicates a demand-paged executable with the header in the text. 57 The first page is unmapped to help trap NULL pointer references. */ 58 #define QMAGIC 0314 59 /* Code indicating core file. */ 60 #define CMAGIC 0421 61 62 #define N_TRSIZE(a) ((a).a_trsize) 63 #define N_DRSIZE(a) ((a).a_drsize) 64 #define N_SYMSIZE(a) ((a).a_syms) 65 #define N_BADMAG(x) \ 66 (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \ 67 && N_MAGIC(x) != ZMAGIC && N_MAGIC(x) != QMAGIC) 68 #define _N_HDROFF(x) (1024 - sizeof (struct exec)) 69 #define N_TXTOFF(x) \ 70 (N_MAGIC(x) == ZMAGIC ? 0 : sizeof (struct exec)) 71 #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) 72 #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) 73 #define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x)) 74 #define N_SYMOFF(x) \ 75 (N_TXTOFF(x) + (x).a_text + (x).a_data + (x).a_trsize + (x).a_drsize) 76 #define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x)) 77 78 #define SPARC_PGSIZE 0x2000 79 80 /* Address of text segment in memory after it is loaded. */ 81 #define N_TXTADDR(x) \ 82 (unsigned long)(((N_MAGIC(x) == ZMAGIC) && ((x).a_entry < SPARC_PGSIZE)) \ 83 ? 0 : SPARC_PGSIZE) 84 85 /* Address of data segment in memory after it is loaded. */ 86 #define SEGMENT_SIZE SPARC_PGSIZE 87 88 #define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1)) 89 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) 90 91 #define N_DATADDR(x) \ 92 (N_MAGIC(x)==OMAGIC \ 93 ? (N_TXTADDR(x) + (x).a_text) \ 94 : (unsigned long)(_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) 95 #define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) 96 97 #if !defined (N_NLIST_DECLARED) 98 struct nlist 99 { 100 union 101 { 102 char *n_name; 103 struct nlist *n_next; 104 long n_strx; 105 } n_un; 106 unsigned char n_type; 107 char n_other; 108 short n_desc; 109 unsigned long n_value; 110 }; 111 #endif /* no N_NLIST_DECLARED. */ 112 113 #define N_UNDF 0 114 #define N_ABS 2 115 #define N_TEXT 4 116 #define N_DATA 6 117 #define N_BSS 8 118 #define N_FN 15 119 #define N_EXT 1 120 #define N_TYPE 036 121 #define N_STAB 0340 122 #define N_INDR 0xa 123 #define N_SETA 0x14 /* Absolute set element symbol. */ 124 #define N_SETT 0x16 /* Text set element symbol. */ 125 #define N_SETD 0x18 /* Data set element symbol. */ 126 #define N_SETB 0x1A /* Bss set element symbol. */ 127 #define N_SETV 0x1C /* Pointer to set vector in data area. */ 128 129 #if !defined (N_RELOCATION_INFO_DECLARED) 130 enum reloc_type 131 { 132 RELOC_8, 133 RELOC_16, 134 RELOC_32, 135 RELOC_DISP8, 136 RELOC_DISP16, 137 RELOC_DISP32, 138 RELOC_WDISP30, 139 RELOC_WDISP22, 140 RELOC_HI22, 141 RELOC_22, 142 RELOC_13, 143 RELOC_LO10, 144 RELOC_SFA_BASE, 145 RELOC_SFA_OFF13, 146 RELOC_BASE10, 147 RELOC_BASE13, 148 RELOC_BASE22, 149 RELOC_PC10, 150 RELOC_PC22, 151 RELOC_JMP_TBL, 152 RELOC_SEGOFF16, 153 RELOC_GLOB_DAT, 154 RELOC_JMP_SLOT, 155 RELOC_RELATIVE 156 }; 157 158 /* This structure describes a single relocation to be performed. 159 The text-relocation section of the file is a vector of these structures, 160 all of which apply to the text section. 161 Likewise, the data-relocation section applies to the data section. */ 162 163 struct relocation_info 164 { 165 unsigned int r_address; 166 unsigned int r_index:24; 167 unsigned int r_extern:1; 168 int r_pad:2; 169 enum reloc_type r_type:5; 170 int r_addend; 171 }; 172 #endif /* no N_RELOCATION_INFO_DECLARED. */ 173 174 #endif /* __A_OUT_GNU_H__ */