Changeset 609 for branches/GNU/src/binutils/include/bout.h
- Timestamp:
- Aug 16, 2003, 6:59:22 PM (22 years ago)
- File:
-
- 1 edited
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branches/GNU/src/binutils/include/bout.h (modified) (5 diffs, 1 prop)
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branches/GNU/src/binutils/include/bout.h
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Property cvs2svn:cvs-rev
changed from
1.1to1.1.1.2
r608 r609 52 52 #define BMAGIC 0415 53 53 /* We don't accept the following (see N_BADMAG macro). 54 * They're just here so GNU code will compile. 55 */ 54 They're just here so GNU code will compile. */ 56 55 #define OMAGIC 0407 /* old impure format */ 57 56 #define NMAGIC 0410 /* read-only text */ … … 59 58 60 59 /* FILE HEADER 61 *All 'lengths' are given as a number of bytes.62 *All 'alignments' are for relinkable files only; an alignment of63 *'n' indicates the corresponding segment must begin at an64 * address that is a multiple of (2**n).65 */ 66 struct external_exec{67 68 69 70 71 unsigned char e_bss[4];/* Length of uninitialized data area */72 73 74 75 60 All 'lengths' are given as a number of bytes. 61 All 'alignments' are for relinkable files only; an alignment of 62 'n' indicates the corresponding segment must begin at an 63 address that is a multiple of (2**n). */ 64 struct external_exec 65 { 66 /* Standard stuff */ 67 unsigned char e_info[4]; /* Identifies this as a b.out file */ 68 unsigned char e_text[4]; /* Length of text */ 69 unsigned char e_data[4]; /* Length of data */ 70 unsigned char e_bss[4]; /* Length of uninitialized data area */ 71 unsigned char e_syms[4]; /* Length of symbol table */ 72 unsigned char e_entry[4]; /* Runtime start address */ 73 unsigned char e_trsize[4]; /* Length of text relocation info */ 74 unsigned char e_drsize[4]; /* Length of data relocation info */ 76 75 77 78 79 80 81 82 83 unsigned char e_relaxable[1];/* Assembled with enough info to allow linker to relax */84 };76 /* Added for i960 */ 77 unsigned char e_tload[4]; /* Text runtime load address */ 78 unsigned char e_dload[4]; /* Data runtime load address */ 79 unsigned char e_talign[1]; /* Alignment of text segment */ 80 unsigned char e_dalign[1]; /* Alignment of data segment */ 81 unsigned char e_balign[1]; /* Alignment of bss segment */ 82 unsigned char e_relaxable[1];/* Assembled with enough info to allow linker to relax */ 83 }; 85 84 86 85 #define EXEC_BYTES_SIZE (sizeof (struct external_exec)) 87 86 88 87 /* These macros use the a_xxx field names, since they operate on the exec 89 structure after it's been byte-swapped and realigned on the host machine. */88 structure after it's been byte-swapped and realigned on the host machine. */ 90 89 #define N_BADMAG(x) (((x).a_info)!=BMAGIC) 91 90 #define N_TXTOFF(x) EXEC_BYTES_SIZE … … 104 103 #endif 105 104 106 /* A single entry in the symbol table 107 */ 108 struct nlist { 109 union { 110 char *n_name; 111 struct nlist *n_next; 112 long n_strx; /* Index into string table */ 113 } n_un; 114 unsigned char n_type; /* See below */ 115 char n_other; /* Used in i80960 support -- see below */ 116 short n_desc; 117 unsigned long n_value; 118 }; 105 /* A single entry in the symbol table. */ 106 struct nlist 107 { 108 union 109 { 110 char* n_name; 111 struct nlist * n_next; 112 long n_strx; /* Index into string table */ 113 } n_un; 114 115 unsigned char n_type; /* See below */ 116 char n_other; /* Used in i80960 support -- see below */ 117 short n_desc; 118 unsigned long n_value; 119 }; 119 120 120 121 121 /* Legal values of n_type 122 */ 122 /* Legal values of n_type. */ 123 123 #define N_UNDF 0 /* Undefined symbol */ 124 124 #define N_ABS 2 /* Absolute symbol */ … … 133 133 134 134 /* MEANING OF 'n_other' 135 * 136 * If non-zero, the 'n_other' fields indicates either a leaf procedure or 137 * a system procedure, as follows: 138 * 139 * 1 <= n_other <= 32 : 140 * The symbol is the entry point to a system procedure. 141 * 'n_value' is the address of the entry, as for any other 142 * procedure. The system procedure number (which can be used in 143 * a 'calls' instruction) is (n_other-1). These entries come from 144 * '.sysproc' directives. 145 * 146 * n_other == N_CALLNAME 147 * the symbol is the 'call' entry point to a leaf procedure. 148 * The *next* symbol in the symbol table must be the corresponding 149 * 'bal' entry point to the procedure (see following). These 150 * entries come from '.leafproc' directives in which two different 151 * symbols are specified (the first one is represented here). 152 * 153 * 154 * n_other == N_BALNAME 155 * the symbol is the 'bal' entry point to a leaf procedure. 156 * These entries result from '.leafproc' directives in which only 157 * one symbol is specified, or in which the same symbol is 158 * specified twice. 159 * 160 * Note that an N_CALLNAME entry *must* have a corresponding N_BALNAME entry, 161 * but not every N_BALNAME entry must have an N_CALLNAME entry. 162 */ 135 136 If non-zero, the 'n_other' fields indicates either a leaf procedure or 137 a system procedure, as follows: 138 139 1 <= n_other <= 32 : 140 The symbol is the entry point to a system procedure. 141 'n_value' is the address of the entry, as for any other 142 procedure. The system procedure number (which can be used in 143 a 'calls' instruction) is (n_other-1). These entries come from 144 '.sysproc' directives. 145 146 n_other == N_CALLNAME 147 the symbol is the 'call' entry point to a leaf procedure. 148 The *next* symbol in the symbol table must be the corresponding 149 'bal' entry point to the procedure (see following). These 150 entries come from '.leafproc' directives in which two different 151 symbols are specified (the first one is represented here). 152 153 154 n_other == N_BALNAME 155 the symbol is the 'bal' entry point to a leaf procedure. 156 These entries result from '.leafproc' directives in which only 157 one symbol is specified, or in which the same symbol is 158 specified twice. 159 160 Note that an N_CALLNAME entry *must* have a corresponding N_BALNAME entry, 161 but not every N_BALNAME entry must have an N_CALLNAME entry. */ 163 162 #define N_CALLNAME ((char)-1) 164 163 #define N_BALNAME ((char)-2) … … 168 167 169 168 #define b_out_relocation_info relocation_info 170 struct relocation_info { 171 int r_address; /* File address of item to be relocated */ 172 unsigned 169 struct relocation_info 170 { 171 int r_address; /* File address of item to be relocated. */ 172 unsigned 173 173 #define r_index r_symbolnum 174 r_symbolnum:24,/* Index of symbol on which relocation is based, 175 * if r_extern is set. Otherwise set to 176 * either N_TEXT, N_DATA, or N_BSS to 177 * indicate section on which relocation is 178 * based. 179 */ 180 r_pcrel:1, /* 1 => relocate PC-relative; else absolute 181 * On i960, pc-relative implies 24-bit 182 * address, absolute implies 32-bit. 183 */ 184 r_length:2, /* Number of bytes to relocate: 185 * 0 => 1 byte 186 * 1 => 2 bytes -- used for 13 bit pcrel 187 * 2 => 4 bytes 188 */ 189 r_extern:1, 190 r_bsr:1, /* Something for the GNU NS32K assembler */ 191 r_disp:1, /* Something for the GNU NS32K assembler */ 192 r_callj:1, /* 1 if relocation target is an i960 'callj' */ 193 r_relaxable:1; /* 1 if enough info is left to relax 194 the data */ 174 r_symbolnum:24, /* Index of symbol on which relocation is based, 175 if r_extern is set. Otherwise set to 176 either N_TEXT, N_DATA, or N_BSS to 177 indicate section on which relocation is 178 based. */ 179 r_pcrel:1, /* 1 => relocate PC-relative; else absolute 180 On i960, pc-relative implies 24-bit 181 address, absolute implies 32-bit. */ 182 r_length:2, /* Number of bytes to relocate: 183 0 => 1 byte 184 1 => 2 bytes -- used for 13 bit pcrel 185 2 => 4 bytes. */ 186 r_extern:1, 187 r_bsr:1, /* Something for the GNU NS32K assembler. */ 188 r_disp:1, /* Something for the GNU NS32K assembler. */ 189 r_callj:1, /* 1 if relocation target is an i960 'callj'. */ 190 r_relaxable:1; /* 1 if enough info is left to relax the data. */ 195 191 }; -
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