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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2#ifndef _UAPI__A_OUT_GNU_H__3#define _UAPI__A_OUT_GNU_H__4 5#define __GNU_EXEC_MACROS__6 7#ifndef __STRUCT_EXEC_OVERRIDE__8 9#include <asm/a.out.h>10 11#endif /* __STRUCT_EXEC_OVERRIDE__ */12 13#ifndef __ASSEMBLY__14 15/* these go in the N_MACHTYPE field */16enum machine_type {17#if defined (M_OLDSUN2)18 M__OLDSUN2 = M_OLDSUN2,19#else20 M_OLDSUN2 = 0,21#endif22#if defined (M_68010)23 M__68010 = M_68010,24#else25 M_68010 = 1,26#endif27#if defined (M_68020)28 M__68020 = M_68020,29#else30 M_68020 = 2,31#endif32#if defined (M_SPARC)33 M__SPARC = M_SPARC,34#else35 M_SPARC = 3,36#endif37 /* skip a bunch so we don't run into any of sun's numbers */38 M_386 = 100,39 M_MIPS1 = 151, /* MIPS R3000/R3000 binary */40 M_MIPS2 = 152 /* MIPS R6000/R4000 binary */41};42 43#if !defined (N_MAGIC)44#define N_MAGIC(exec) ((exec).a_info & 0xffff)45#endif46#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff))47#define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff)48#define N_SET_INFO(exec, magic, type, flags) \49 ((exec).a_info = ((magic) & 0xffff) \50 | (((int)(type) & 0xff) << 16) \51 | (((flags) & 0xff) << 24))52#define N_SET_MAGIC(exec, magic) \53 ((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff)))54 55#define N_SET_MACHTYPE(exec, machtype) \56 ((exec).a_info = \57 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16))58 59#define N_SET_FLAGS(exec, flags) \60 ((exec).a_info = \61 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24))62 63/* Code indicating object file or impure executable. */64#define OMAGIC 040765/* Code indicating pure executable. */66#define NMAGIC 041067/* Code indicating demand-paged executable. */68#define ZMAGIC 041369/* This indicates a demand-paged executable with the header in the text. 70 The first page is unmapped to help trap NULL pointer references */71#define QMAGIC 031472 73/* Code indicating core file. */74#define CMAGIC 042175 76#if !defined (N_BADMAG)77#define N_BADMAG(x) (N_MAGIC(x) != OMAGIC \78 && N_MAGIC(x) != NMAGIC \79 && N_MAGIC(x) != ZMAGIC \80 && N_MAGIC(x) != QMAGIC)81#endif82 83#define _N_HDROFF(x) (1024 - sizeof (struct exec))84 85#if !defined (N_TXTOFF)86#define N_TXTOFF(x) \87 (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \88 (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))89#endif90 91#if !defined (N_DATOFF)92#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text)93#endif94 95#if !defined (N_TRELOFF)96#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data)97#endif98 99#if !defined (N_DRELOFF)100#define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x))101#endif102 103#if !defined (N_SYMOFF)104#define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x))105#endif106 107#if !defined (N_STROFF)108#define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x))109#endif110 111/* Address of text segment in memory after it is loaded. */112#if !defined (N_TXTADDR)113#define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? PAGE_SIZE : 0)114#endif115 116/* Address of data segment in memory after it is loaded. */117#ifndef __KERNEL__118#include <unistd.h>119#endif120#if defined(__i386__) || defined(__mc68000__)121#define SEGMENT_SIZE 1024122#else123#ifndef SEGMENT_SIZE124#ifndef __KERNEL__125#define SEGMENT_SIZE getpagesize()126#endif127#endif128#endif129 130#define _N_SEGMENT_ROUND(x) ALIGN(x, SEGMENT_SIZE)131 132#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text)133 134#ifndef N_DATADDR135#define N_DATADDR(x) \136 (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \137 : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x))))138#endif139 140/* Address of bss segment in memory after it is loaded. */141#if !defined (N_BSSADDR)142#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data)143#endif144 145#if !defined (N_NLIST_DECLARED)146struct nlist {147 union {148 char *n_name;149 struct nlist *n_next;150 long n_strx;151 } n_un;152 unsigned char n_type;153 char n_other;154 short n_desc;155 unsigned long n_value;156};157#endif /* no N_NLIST_DECLARED. */158 159#if !defined (N_UNDF)160#define N_UNDF 0161#endif162#if !defined (N_ABS)163#define N_ABS 2164#endif165#if !defined (N_TEXT)166#define N_TEXT 4167#endif168#if !defined (N_DATA)169#define N_DATA 6170#endif171#if !defined (N_BSS)172#define N_BSS 8173#endif174#if !defined (N_FN)175#define N_FN 15176#endif177 178#if !defined (N_EXT)179#define N_EXT 1180#endif181#if !defined (N_TYPE)182#define N_TYPE 036183#endif184#if !defined (N_STAB)185#define N_STAB 0340186#endif187 188/* The following type indicates the definition of a symbol as being189 an indirect reference to another symbol. The other symbol190 appears as an undefined reference, immediately following this symbol.191 192 Indirection is asymmetrical. The other symbol's value will be used193 to satisfy requests for the indirect symbol, but not vice versa.194 If the other symbol does not have a definition, libraries will195 be searched to find a definition. */196#define N_INDR 0xa197 198/* The following symbols refer to set elements.199 All the N_SET[ATDB] symbols with the same name form one set.200 Space is allocated for the set in the text section, and each set201 element's value is stored into one word of the space.202 The first word of the space is the length of the set (number of elements).203 204 The address of the set is made into an N_SETV symbol205 whose name is the same as the name of the set.206 This symbol acts like a N_DATA global symbol207 in that it can satisfy undefined external references. */208 209/* These appear as input to LD, in a .o file. */210#define N_SETA 0x14 /* Absolute set element symbol */211#define N_SETT 0x16 /* Text set element symbol */212#define N_SETD 0x18 /* Data set element symbol */213#define N_SETB 0x1A /* Bss set element symbol */214 215/* This is output from LD. */216#define N_SETV 0x1C /* Pointer to set vector in data area. */217 218#if !defined (N_RELOCATION_INFO_DECLARED)219/* This structure describes a single relocation to be performed.220 The text-relocation section of the file is a vector of these structures,221 all of which apply to the text section.222 Likewise, the data-relocation section applies to the data section. */223 224struct relocation_info225{226 /* Address (within segment) to be relocated. */227 int r_address;228 /* The meaning of r_symbolnum depends on r_extern. */229 unsigned int r_symbolnum:24;230 /* Nonzero means value is a pc-relative offset231 and it should be relocated for changes in its own address232 as well as for changes in the symbol or section specified. */233 unsigned int r_pcrel:1;234 /* Length (as exponent of 2) of the field to be relocated.235 Thus, a value of 2 indicates 1<<2 bytes. */236 unsigned int r_length:2;237 /* 1 => relocate with value of symbol.238 r_symbolnum is the index of the symbol239 in file's the symbol table.240 0 => relocate with the address of a segment.241 r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS242 (the N_EXT bit may be set also, but signifies nothing). */243 unsigned int r_extern:1;244 /* Four bits that aren't used, but when writing an object file245 it is desirable to clear them. */246 unsigned int r_pad:4;247};248#endif /* no N_RELOCATION_INFO_DECLARED. */249 250#endif /*__ASSEMBLY__ */251#endif /* _UAPI__A_OUT_GNU_H__ */252