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 /* 9 * OSF/1 ECOFF header structs. ECOFF files consist of: 10 * - a file header (struct filehdr), 11 * - an a.out header (struct aouthdr), 12 * - one or more section headers (struct scnhdr). 13 * The filhdr's "f_nscns" field contains the 14 * number of section headers. 15 */ 16 17 struct filehdr 18 { 19 /* OSF/1 "file" header */ 20 unsigned short f_magic, f_nscns; 21 unsigned int f_timdat; 22 unsigned long f_symptr; 23 unsigned int f_nsyms; 24 unsigned short f_opthdr, f_flags; 25 }; 26 27 struct aouthdr 28 { 29 unsigned long info; /* After that it looks quite normal.. */ 30 unsigned long tsize; 31 unsigned long dsize; 32 unsigned long bsize; 33 unsigned long entry; 34 unsigned long text_start; /* With a few additions that actually make sense. */ 35 unsigned long data_start; 36 unsigned long bss_start; 37 unsigned int gprmask, fprmask; /* Bitmask of general & floating point regs used in binary. */ 38 unsigned long gpvalue; 39 }; 40 41 struct scnhdr 42 { 43 char s_name[8]; 44 unsigned long s_paddr; 45 unsigned long s_vaddr; 46 unsigned long s_size; 47 unsigned long s_scnptr; 48 unsigned long s_relptr; 49 unsigned long s_lnnoptr; 50 unsigned short s_nreloc; 51 unsigned short s_nlnno; 52 unsigned int s_flags; 53 }; 54 55 struct exec 56 { 57 /* OSF/1 "file" header */ 58 struct filehdr fh; 59 struct aouthdr ah; 60 }; 61 62 #define a_info ah.info 63 #define a_text ah.tsize 64 #define a_data ah.dsize 65 #define a_bss ah.bsize 66 #define a_entry ah.entry 67 #define a_textstart ah.text_start 68 #define a_datastart ah.data_start 69 #define a_bssstart ah.bss_start 70 #define a_gprmask ah.gprmask 71 #define a_fprmask ah.fprmask 72 #define a_gpvalue ah.gpvalue 73 74 75 #define AOUTHSZ sizeof (struct aouthdr) 76 #define SCNHSZ sizeof (struct scnhdr) 77 #define SCNROUND 16 78 79 enum machine_type 80 { 81 M_OLDSUN2 = 0, 82 M_68010 = 1, 83 M_68020 = 2, 84 M_SPARC = 3, 85 M_386 = 100, 86 M_MIPS1 = 151, 87 M_MIPS2 = 152 88 }; 89 90 #define N_MAGIC(exec) ((exec).a_info & 0xffff) 91 #define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) 92 #define N_FLAGS(exec) (((exec).a_info >> 24) & 0xff) 93 #define N_SET_INFO(exec, magic, type, flags) \ 94 ((exec).a_info = ((magic) & 0xffff) \ 95 | (((int)(type) & 0xff) << 16) \ 96 | (((flags) & 0xff) << 24)) 97 #define N_SET_MAGIC(exec, magic) \ 98 ((exec).a_info = ((exec).a_info & 0xffff0000) | ((magic) & 0xffff)) 99 #define N_SET_MACHTYPE(exec, machtype) \ 100 ((exec).a_info = \ 101 ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16)) 102 #define N_SET_FLAGS(exec, flags) \ 103 ((exec).a_info = \ 104 ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24)) 105 106 /* Code indicating object file or impure executable. */ 107 #define OMAGIC 0407 108 /* Code indicating pure executable. */ 109 #define NMAGIC 0410 110 /* Code indicating demand-paged executable. */ 111 #define ZMAGIC 0413 112 /* This indicates a demand-paged executable with the header in the text. 113 The first page is unmapped to help trap NULL pointer references. */ 114 #define QMAGIC 0314 115 /* Code indicating core file. */ 116 #define CMAGIC 0421 117 118 #define N_TRSIZE(x) 0 119 #define N_DRSIZE(x) 0 120 #define N_SYMSIZE(x) 0 121 #define N_BADMAG(x) \ 122 (N_MAGIC(x) != OMAGIC && N_MAGIC(x) != NMAGIC \ 123 && N_MAGIC(x) != ZMAGIC && N_MAGIC(x) != QMAGIC) 124 #define _N_HDROFF(x) (1024 - sizeof (struct exec)) 125 #define N_TXTOFF(x) \ 126 ((long) N_MAGIC(x) == ZMAGIC ? 0 \ 127 : ((sizeof (struct exec) + (x).fh.f_nscns * SCNHSZ + SCNROUND - 1) \ 128 & ~(SCNROUND - 1))) 129 130 #define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) 131 #define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) 132 #define N_DRELOFF(x) (N_TRELOFF(x) + N_TRSIZE(x)) 133 #define N_SYMOFF(x) (N_DRELOFF(x) + N_DRSIZE(x)) 134 #define N_STROFF(x) (N_SYMOFF(x) + N_SYMSIZE(x)) 135 136 /* Address of text segment in memory after it is loaded. */ 137 #define N_TXTADDR(x) ((x).a_textstart) 138 139 /* Address of data segment in memory after it is loaded. */ 140 #define SEGMENT_SIZE 1024 141 142 #define _N_SEGMENT_ROUND(x) (((x) + SEGMENT_SIZE - 1) & ~(SEGMENT_SIZE - 1)) 143 #define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) 144 145 #define N_DATADDR(x) ((x).a_datastart) 146 #define N_BSSADDR(x) ((x).a_bssstart) 147 148 #if !defined (N_NLIST_DECLARED) 149 struct nlist 150 { 151 union 152 { 153 char *n_name; 154 struct nlist *n_next; 155 long n_strx; 156 } n_un; 157 unsigned char n_type; 158 char n_other; 159 short n_desc; 160 unsigned long n_value; 161 }; 162 #endif /* no N_NLIST_DECLARED. */ 163 164 #define N_UNDF 0 165 #define N_ABS 2 166 #define N_TEXT 4 167 #define N_DATA 6 168 #define N_BSS 8 169 #define N_FN 15 170 #define N_EXT 1 171 #define N_TYPE 036 172 #define N_STAB 0340 173 #define N_INDR 0xa 174 #define N_SETA 0x14 /* Absolute set element symbol. */ 175 #define N_SETT 0x16 /* Text set element symbol. */ 176 #define N_SETD 0x18 /* Data set element symbol. */ 177 #define N_SETB 0x1A /* Bss set element symbol. */ 178 #define N_SETV 0x1C /* Pointer to set vector in data area. */ 179 180 #if !defined (N_RELOCATION_INFO_DECLARED) 181 /* This structure describes a single relocation to be performed. 182 The text-relocation section of the file is a vector of these structures, 183 all of which apply to the text section. 184 Likewise, the data-relocation section applies to the data section. */ 185 186 struct relocation_info 187 { 188 int r_address; 189 unsigned int r_symbolnum:24; 190 unsigned int r_pcrel:1; 191 unsigned int r_length:2; 192 unsigned int r_extern:1; 193 unsigned int r_pad:4; 194 }; 195 #endif /* no N_RELOCATION_INFO_DECLARED. */ 196 197 #endif /* __A_OUT_GNU_H__ */ 198