1#ifndef __A_OUT_GNU_H__ 2#define __A_OUT_GNU_H__ 3 4#define __GNU_EXEC_MACROS__ 5 6#ifndef __STRUCT_EXEC_OVERRIDE__ 7 8#include <asm/a.out.h> 9 10#endif /* __STRUCT_EXEC_OVERRIDE__ */ 11 12#ifndef __ASSEMBLY__ 13 14/* these go in the N_MACHTYPE field */ 15enum machine_type { 16#if defined (M_OLDSUN2) 17 M__OLDSUN2 = M_OLDSUN2, 18#else 19 M_OLDSUN2 = 0, 20#endif 21#if defined (M_68010) 22 M__68010 = M_68010, 23#else 24 M_68010 = 1, 25#endif 26#if defined (M_68020) 27 M__68020 = M_68020, 28#else 29 M_68020 = 2, 30#endif 31#if defined (M_SPARC) 32 M__SPARC = M_SPARC, 33#else 34 M_SPARC = 3, 35#endif 36 /* skip a bunch so we don't run into any of sun's numbers */ 37 M_386 = 100, 38 M_MIPS1 = 151, /* MIPS R3000/R3000 binary */ 39 M_MIPS2 = 152 /* MIPS R6000/R4000 binary */ 40}; 41 42#if !defined (N_MAGIC) 43#define N_MAGIC(exec) ((exec).a_info & 0xffff) 44#endif 45#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) 46#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff) 47#define N_SET_INFO(exec, magic, type, flags) \ 48 ((exec).a_info = ((magic) & 0xffff) \ 49 | (((int)(type) & 0xff) << 16) \ 50 | (((flags) & 0xff) << 24)) 51#define N_SET_MAGIC(exec, magic) \ 52 ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff))) 53 54#define N_SET_MACHTYPE(exec, machtype) \ 55 ((exec).a_info = \ 56 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16)) 57 58#define N_SET_FLAGS(exec, flags) \ 59 ((exec).a_info = \ 60 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24)) 61 62/* Code indicating object file or impure executable. */ 63#define OMAGIC 0407 64/* Code indicating pure executable. */ 65#define NMAGIC 0410 66/* Code indicating demand-paged executable. */ 67#define ZMAGIC 0413 68/* This indicates a demand-paged executable with the header in the text. 69 The first page is unmapped to help trap NULL pointer references */ 70#define QMAGIC 0314 71 72/* Code indicating core file. */ 73#define CMAGIC 0421 74 75#if !defined (N_BADMAG) 76#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \ 77 && N_MAGIC(x) != NMAGIC \ 78 && N_MAGIC(x) != ZMAGIC \ 79 && N_MAGIC(x) != QMAGIC) 80#endif 81 82#define _N_HDROFF(x) (1024 - sizeof (struct exec)) 83 84#if !defined (N_TXTOFF) 85#define N_TXTOFF(x) \ 86 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \ 87 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec))) 88#endif 89 90#if !defined (N_DATOFF) 91#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) 92#endif 93 94#if !defined (N_TRELOFF) 95#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) 96#endif 97 98#if !defined (N_DRELOFF) 99#define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x)) 100#endif 101 102#if !defined (N_SYMOFF) 103#define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x)) 104#endif 105 106#if !defined (N_STROFF) 107#define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x)) 108#endif 109 110/* Address of text segment in memory after it is loaded. */ 111#if !defined (N_TXTADDR) 112#define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? PAGE_SIZE : 0) 113#endif 114 115/* Address of data segment in memory after it is loaded. 116 Note that it is up to you to define SEGMENT_SIZE 117 on machines not listed here. */ 118#if defined(vax) || defined(hp300) || defined(pyr) 119#define SEGMENT_SIZE page_size 120#endif 121#ifdef sony 122#define SEGMENT_SIZE 0x2000 123#endif /* Sony. */ 124#ifdef is68k 125#define SEGMENT_SIZE 0x20000 126#endif 127#if defined(m68k) && defined(PORTAR) 128#define PAGE_SIZE 0x400 129#define SEGMENT_SIZE PAGE_SIZE 130#endif 131 132#ifdef linux 133#include <unistd.h> 134#if defined(__i386__) || defined(__mc68000__) 135#define SEGMENT_SIZE 1024 136#else 137#ifndef SEGMENT_SIZE 138#define SEGMENT_SIZE getpagesize() 139#endif 140#endif 141#endif 142 143#define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE) 144 145#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) 146 147#ifndef N_DATADDR 148#define N_DATADDR(x) \ 149 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \ 150 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) 151#endif 152 153/* Address of bss segment in memory after it is loaded. */ 154#if !defined (N_BSSADDR) 155#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) 156#endif 157 158#if !defined (N_NLIST_DECLARED) 159struct nlist { 160 union { 161 char *n_name; 162 struct nlist *n_next; 163 long n_strx; 164 } n_un; 165 unsigned char n_type; 166 char n_other; 167 short n_desc; 168 unsigned long n_value; 169}; 170#endif /* no N_NLIST_DECLARED. */ 171 172#if !defined (N_UNDF) 173#define N_UNDF 0 174#endif 175#if !defined (N_ABS) 176#define N_ABS 2 177#endif 178#if !defined (N_TEXT) 179#define N_TEXT 4 180#endif 181#if !defined (N_DATA) 182#define N_DATA 6 183#endif 184#if !defined (N_BSS) 185#define N_BSS 8 186#endif 187#if !defined (N_FN) 188#define N_FN 15 189#endif 190 191#if !defined (N_EXT) 192#define N_EXT 1 193#endif 194#if !defined (N_TYPE) 195#define N_TYPE 036 196#endif 197#if !defined (N_STAB) 198#define N_STAB 0340 199#endif 200 201/* The following type indicates the definition of a symbol as being 202 an indirect reference to another symbol. The other symbol 203 appears as an undefined reference, immediately following this symbol. 204 205 Indirection is asymmetrical. The other symbol's value will be used 206 to satisfy requests for the indirect symbol, but not vice versa. 207 If the other symbol does not have a definition, libraries will 208 be searched to find a definition. */ 209#define N_INDR 0xa 210 211/* The following symbols refer to set elements. 212 All the N_SET[ATDB] symbols with the same name form one set. 213 Space is allocated for the set in the text section, and each set 214 element's value is stored into one word of the space. 215 The first word of the space is the length of the set (number of elements). 216 217 The address of the set is made into an N_SETV symbol 218 whose name is the same as the name of the set. 219 This symbol acts like a N_DATA global symbol 220 in that it can satisfy undefined external references. */ 221 222/* These appear as input to LD, in a .o file. */ 223#define N_SETA 0x14 /* Absolute set element symbol */ 224#define N_SETT 0x16 /* Text set element symbol */ 225#define N_SETD 0x18 /* Data set element symbol */ 226#define N_SETB 0x1A /* Bss set element symbol */ 227 228/* This is output from LD. */ 229#define N_SETV 0x1C /* Pointer to set vector in data area. */ 230 231#if !defined (N_RELOCATION_INFO_DECLARED) 232/* This structure describes a single relocation to be performed. 233 The text-relocation section of the file is a vector of these structures, 234 all of which apply to the text section. 235 Likewise, the data-relocation section applies to the data section. */ 236 237struct relocation_info 238{ 239 /* Address (within segment) to be relocated. */ 240 int r_address; 241 /* The meaning of r_symbolnum depends on r_extern. */ 242 unsigned int r_symbolnum:24; 243 /* Nonzero means value is a pc-relative offset 244 and it should be relocated for changes in its own address 245 as well as for changes in the symbol or section specified. */ 246 unsigned int r_pcrel:1; 247 /* Length (as exponent of 2) of the field to be relocated. 248 Thus, a value of 2 indicates 1<<2 bytes. */ 249 unsigned int r_length:2; 250 /* 1 => relocate with value of symbol. 251 r_symbolnum is the index of the symbol 252 in file's the symbol table. 253 0 => relocate with the address of a segment. 254 r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS 255 (the N_EXT bit may be set also, but signifies nothing). */ 256 unsigned int r_extern:1; 257 /* Four bits that aren't used, but when writing an object file 258 it is desirable to clear them. */ 259#ifdef NS32K 260 unsigned r_bsr:1; 261 unsigned r_disp:1; 262 unsigned r_pad:2; 263#else 264 unsigned int r_pad:4; 265#endif 266}; 267#endif /* no N_RELOCATION_INFO_DECLARED. */ 268 269#endif /*__ASSEMBLY__ */ 270#endif /* __A_OUT_GNU_H__ */ 271