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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5222 | serge | 1 | /* tc-i386.c -- Assemble Intel syntax code for ix86/x86-64 |
| 2 | Copyright 2009, 2010 |
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| 3 | Free Software Foundation, Inc. |
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| 4 | |||
| 5 | This file is part of GAS, the GNU Assembler. |
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| 6 | |||
| 7 | GAS is free software; you can redistribute it and/or modify |
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| 8 | it under the terms of the GNU General Public License as published by |
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| 9 | the Free Software Foundation; either version 3, or (at your option) |
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| 10 | any later version. |
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| 11 | |||
| 12 | GAS is distributed in the hope that it will be useful, |
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 15 | GNU General Public License for more details. |
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| 16 | |||
| 17 | You should have received a copy of the GNU General Public License |
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| 18 | along with GAS; see the file COPYING. If not, write to the Free |
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| 19 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
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| 20 | 02110-1301, USA. */ |
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| 21 | |||
| 22 | static struct |
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| 23 | { |
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| 24 | operatorT op_modifier; /* Operand modifier. */ |
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| 25 | int is_mem; /* 1 if operand is memory reference. */ |
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| 26 | int is_indirect; /* 1 if operand is indirect reference. */ |
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| 27 | int has_offset; /* 1 if operand has offset. */ |
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| 28 | unsigned int in_offset; /* >=1 if processing operand of offset. */ |
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| 29 | unsigned int in_bracket; /* >=1 if processing operand in brackets. */ |
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| 30 | unsigned int in_scale; /* >=1 if processing multipication operand |
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| 31 | * in brackets. */ |
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| 32 | i386_operand_type reloc_types; /* Value obtained from lex_got(). */ |
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| 33 | const reg_entry *base; /* Base register (if any). */ |
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| 34 | const reg_entry *index; /* Index register (if any). */ |
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| 35 | offsetT scale_factor; /* Accumulated scale factor. */ |
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| 36 | symbolS *seg; |
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| 37 | } |
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| 38 | intel_state; |
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| 39 | |||
| 40 | /* offset X_add_symbol */ |
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| 41 | #define O_offset O_md32 |
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| 42 | /* offset X_add_symbol */ |
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| 43 | #define O_short O_md31 |
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| 44 | /* near ptr X_add_symbol */ |
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| 45 | #define O_near_ptr O_md30 |
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| 46 | /* far ptr X_add_symbol */ |
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| 47 | #define O_far_ptr O_md29 |
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| 48 | /* byte ptr X_add_symbol */ |
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| 49 | #define O_byte_ptr O_md28 |
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| 50 | /* word ptr X_add_symbol */ |
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| 51 | #define O_word_ptr O_md27 |
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| 52 | /* dword ptr X_add_symbol */ |
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| 53 | #define O_dword_ptr O_md26 |
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| 54 | /* qword ptr X_add_symbol */ |
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| 55 | #define O_qword_ptr O_md25 |
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| 56 | /* oword ptr X_add_symbol */ |
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| 57 | #define O_oword_ptr O_md24 |
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| 58 | /* fword ptr X_add_symbol */ |
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| 59 | #define O_fword_ptr O_md23 |
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| 60 | /* tbyte ptr X_add_symbol */ |
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| 61 | #define O_tbyte_ptr O_md22 |
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| 62 | /* xmmword ptr X_add_symbol */ |
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| 63 | #define O_xmmword_ptr O_md21 |
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| 64 | /* ymmword ptr X_add_symbol */ |
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| 65 | #define O_ymmword_ptr O_md20 |
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| 66 | /* zmmword ptr X_add_symbol */ |
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| 67 | #define O_zmmword_ptr O_md19 |
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| 68 | |||
| 69 | static struct |
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| 70 | { |
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| 71 | const char *name; |
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| 72 | operatorT op; |
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| 73 | unsigned int operands; |
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| 74 | } |
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| 75 | const i386_operators[] = |
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| 76 | { |
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| 77 | { "and", O_bit_and, 2 }, |
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| 78 | { "eq", O_eq, 2 }, |
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| 79 | { "ge", O_ge, 2 }, |
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| 80 | { "gt", O_gt, 2 }, |
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| 81 | { "le", O_le, 2 }, |
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| 82 | { "lt", O_lt, 2 }, |
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| 83 | { "mod", O_modulus, 2 }, |
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| 84 | { "ne", O_ne, 2 }, |
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| 85 | { "not", O_bit_not, 1 }, |
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| 86 | { "offset", O_offset, 1 }, |
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| 87 | { "or", O_bit_inclusive_or, 2 }, |
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| 88 | { "shl", O_left_shift, 2 }, |
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| 89 | { "short", O_short, 1 }, |
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| 90 | { "shr", O_right_shift, 2 }, |
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| 91 | { "xor", O_bit_exclusive_or, 2 }, |
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| 92 | { NULL, O_illegal, 0 } |
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| 93 | }; |
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| 94 | |||
| 95 | static struct |
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| 96 | { |
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| 97 | const char *name; |
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| 98 | operatorT op; |
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| 99 | unsigned short sz[3]; |
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| 100 | } |
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| 101 | const i386_types[] = |
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| 102 | { |
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| 103 | #define I386_TYPE(t, n) { #t, O_##t##_ptr, { n, n, n } } |
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| 104 | I386_TYPE(byte, 1), |
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| 105 | I386_TYPE(word, 2), |
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| 106 | I386_TYPE(dword, 4), |
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| 107 | I386_TYPE(fword, 6), |
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| 108 | I386_TYPE(qword, 8), |
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| 109 | I386_TYPE(tbyte, 10), |
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| 110 | I386_TYPE(oword, 16), |
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| 111 | I386_TYPE(xmmword, 16), |
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| 112 | I386_TYPE(ymmword, 32), |
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| 113 | I386_TYPE(zmmword, 64), |
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| 114 | #undef I386_TYPE |
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| 115 | { "near", O_near_ptr, { 0xff04, 0xff02, 0xff08 } }, |
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| 116 | { "far", O_far_ptr, { 0xff06, 0xff05, 0xff06 } }, |
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| 117 | { NULL, O_illegal, { 0, 0, 0 } } |
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| 118 | }; |
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| 119 | |||
| 120 | operatorT i386_operator (const char *name, unsigned int operands, char *pc) |
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| 121 | { |
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| 122 | unsigned int j; |
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| 123 | |||
| 124 | if (!intel_syntax) |
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| 125 | return O_absent; |
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| 126 | |||
| 127 | if (!name) |
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| 128 | { |
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| 129 | if (operands != 2) |
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| 130 | return O_illegal; |
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| 131 | switch (*input_line_pointer) |
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| 132 | { |
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| 133 | case ':': |
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| 134 | ++input_line_pointer; |
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| 135 | return O_full_ptr; |
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| 136 | case '[': |
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| 137 | ++input_line_pointer; |
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| 138 | return O_index; |
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| 139 | case '@': |
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| 140 | if (this_operand >= 0 && i.reloc[this_operand] == NO_RELOC) |
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| 141 | { |
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| 142 | int adjust = 0; |
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| 143 | char *gotfree_input_line = lex_got (&i.reloc[this_operand], |
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| 144 | &adjust, |
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| 145 | &intel_state.reloc_types, |
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| 146 | (i.bnd_prefix != NULL |
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| 147 | || add_bnd_prefix)); |
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| 148 | |||
| 149 | if (!gotfree_input_line) |
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| 150 | break; |
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| 151 | free (gotfree_input_line); |
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| 152 | *input_line_pointer++ = '+'; |
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| 153 | memset (input_line_pointer, '0', adjust - 1); |
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| 154 | input_line_pointer[adjust - 1] = ' '; |
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| 155 | return O_add; |
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| 156 | } |
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| 157 | break; |
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| 158 | } |
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| 159 | return O_illegal; |
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| 160 | } |
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| 161 | |||
| 162 | for (j = 0; i386_operators[j].name; ++j) |
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| 163 | if (strcasecmp (i386_operators[j].name, name) == 0) |
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| 164 | { |
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| 165 | if (i386_operators[j].operands |
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| 166 | && i386_operators[j].operands != operands) |
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| 167 | return O_illegal; |
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| 168 | return i386_operators[j].op; |
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| 169 | } |
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| 170 | |||
| 171 | for (j = 0; i386_types[j].name; ++j) |
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| 172 | if (strcasecmp (i386_types[j].name, name) == 0) |
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| 173 | break; |
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| 174 | if (i386_types[j].name && *pc == ' ') |
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| 175 | { |
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| 176 | char *pname = ++input_line_pointer; |
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| 177 | char c = get_symbol_end (); |
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| 178 | |||
| 179 | if (strcasecmp (pname, "ptr") == 0) |
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| 180 | { |
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| 181 | pname[-1] = *pc; |
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| 182 | *pc = c; |
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| 183 | if (intel_syntax > 0 || operands != 1) |
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| 184 | return O_illegal; |
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| 185 | return i386_types[j].op; |
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| 186 | } |
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| 187 | |||
| 188 | *input_line_pointer = c; |
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| 189 | input_line_pointer = pname - 1; |
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| 190 | } |
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| 191 | |||
| 192 | return O_absent; |
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| 193 | } |
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| 194 | |||
| 195 | static int i386_intel_parse_name (const char *name, expressionS *e) |
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| 196 | { |
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| 197 | unsigned int j; |
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| 198 | |||
| 199 | if (! strcmp (name, "$")) |
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| 200 | { |
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| 201 | current_location (e); |
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| 202 | return 1; |
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| 203 | } |
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| 204 | |||
| 205 | for (j = 0; i386_types[j].name; ++j) |
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| 206 | if (strcasecmp(i386_types[j].name, name) == 0) |
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| 207 | { |
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| 208 | e->X_op = O_constant; |
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| 209 | e->X_add_number = i386_types[j].sz[flag_code]; |
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| 210 | e->X_add_symbol = NULL; |
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| 211 | e->X_op_symbol = NULL; |
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| 212 | return 1; |
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| 213 | } |
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| 214 | |||
| 215 | return 0; |
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| 216 | } |
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| 217 | |||
| 218 | static INLINE int i386_intel_check (const reg_entry *rreg, |
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| 219 | const reg_entry *base, |
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| 220 | const reg_entry *iindex) |
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| 221 | { |
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| 222 | if ((this_operand >= 0 |
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| 223 | && rreg != i.op[this_operand].regs) |
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| 224 | || base != intel_state.base |
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| 225 | || iindex != intel_state.index) |
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| 226 | { |
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| 227 | as_bad (_("invalid use of register")); |
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| 228 | return 0; |
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| 229 | } |
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| 230 | return 1; |
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| 231 | } |
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| 232 | |||
| 233 | static INLINE void i386_intel_fold (expressionS *e, symbolS *sym) |
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| 234 | { |
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| 235 | expressionS *exp = symbol_get_value_expression (sym); |
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| 236 | if (S_GET_SEGMENT (sym) == absolute_section) |
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| 237 | { |
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| 238 | offsetT val = e->X_add_number; |
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| 239 | |||
| 240 | *e = *exp; |
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| 241 | e->X_add_number += val; |
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| 242 | } |
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| 243 | else |
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| 244 | { |
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| 245 | if (exp->X_op == O_symbol |
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| 246 | && strcmp (S_GET_NAME (exp->X_add_symbol), |
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| 247 | GLOBAL_OFFSET_TABLE_NAME) == 0) |
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| 248 | sym = exp->X_add_symbol; |
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| 249 | e->X_add_symbol = sym; |
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| 250 | e->X_op_symbol = NULL; |
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| 251 | e->X_op = O_symbol; |
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| 252 | } |
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| 253 | } |
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| 254 | |||
| 255 | static int |
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| 256 | i386_intel_simplify_register (expressionS *e) |
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| 257 | { |
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| 258 | int reg_num; |
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| 259 | |||
| 260 | if (this_operand < 0 || intel_state.in_offset) |
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| 261 | { |
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| 262 | as_bad (_("invalid use of register")); |
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| 263 | return 0; |
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| 264 | } |
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| 265 | |||
| 266 | if (e->X_op == O_register) |
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| 267 | reg_num = e->X_add_number; |
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| 268 | else |
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| 269 | reg_num = e->X_md - 1; |
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| 270 | |||
| 271 | if (!intel_state.in_bracket) |
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| 272 | { |
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| 273 | if (i.op[this_operand].regs) |
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| 274 | { |
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| 275 | as_bad (_("invalid use of register")); |
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| 276 | return 0; |
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| 277 | } |
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| 278 | if (i386_regtab[reg_num].reg_type.bitfield.sreg3 |
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| 279 | && i386_regtab[reg_num].reg_num == RegFlat) |
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| 280 | { |
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| 281 | as_bad (_("invalid use of pseudo-register")); |
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| 282 | return 0; |
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| 283 | } |
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| 284 | i.op[this_operand].regs = i386_regtab + reg_num; |
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| 285 | } |
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| 286 | else if (!intel_state.index |
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| 287 | && (i386_regtab[reg_num].reg_type.bitfield.regxmm |
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| 288 | || i386_regtab[reg_num].reg_type.bitfield.regymm |
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| 289 | || i386_regtab[reg_num].reg_type.bitfield.regzmm)) |
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| 290 | intel_state.index = i386_regtab + reg_num; |
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| 291 | else if (!intel_state.base && !intel_state.in_scale) |
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| 292 | intel_state.base = i386_regtab + reg_num; |
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| 293 | else if (!intel_state.index) |
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| 294 | { |
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| 295 | if (intel_state.in_scale |
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| 296 | || i386_regtab[reg_num].reg_type.bitfield.baseindex) |
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| 297 | intel_state.index = i386_regtab + reg_num; |
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| 298 | else |
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| 299 | { |
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| 300 | /* Convert base to index and make ESP/RSP the base. */ |
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| 301 | intel_state.index = intel_state.base; |
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| 302 | intel_state.base = i386_regtab + reg_num; |
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| 303 | } |
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| 304 | } |
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| 305 | else |
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| 306 | { |
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| 307 | /* esp is invalid as index */ |
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| 308 | intel_state.index = i386_regtab + REGNAM_EAX + ESP_REG_NUM; |
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| 309 | } |
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| 310 | return 2; |
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| 311 | } |
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| 312 | |||
| 313 | static int i386_intel_simplify (expressionS *); |
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| 314 | |||
| 315 | static INLINE int i386_intel_simplify_symbol(symbolS *sym) |
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| 316 | { |
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| 317 | int ret = i386_intel_simplify (symbol_get_value_expression (sym)); |
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| 318 | |||
| 319 | if (ret == 2) |
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| 320 | { |
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| 321 | S_SET_SEGMENT(sym, absolute_section); |
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| 322 | ret = 1; |
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| 323 | } |
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| 324 | return ret; |
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| 325 | } |
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| 326 | |||
| 327 | static int i386_intel_simplify (expressionS *e) |
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| 328 | { |
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| 329 | const reg_entry *the_reg = (this_operand >= 0 |
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| 330 | ? i.op[this_operand].regs : NULL); |
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| 331 | const reg_entry *base = intel_state.base; |
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| 332 | const reg_entry *state_index = intel_state.index; |
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| 333 | int ret; |
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| 334 | |||
| 335 | if (!intel_syntax) |
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| 336 | return 1; |
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| 337 | |||
| 338 | switch (e->X_op) |
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| 339 | { |
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| 340 | case O_index: |
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| 341 | if (e->X_add_symbol) |
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| 342 | { |
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| 343 | if (!i386_intel_simplify_symbol (e->X_add_symbol) |
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| 344 | || !i386_intel_check(the_reg, intel_state.base, |
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| 345 | intel_state.index)) |
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| 346 | return 0; |
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| 347 | } |
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| 348 | if (!intel_state.in_offset) |
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| 349 | ++intel_state.in_bracket; |
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| 350 | ret = i386_intel_simplify_symbol (e->X_op_symbol); |
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| 351 | if (!intel_state.in_offset) |
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| 352 | --intel_state.in_bracket; |
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| 353 | if (!ret) |
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| 354 | return 0; |
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| 355 | if (e->X_add_symbol) |
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| 356 | e->X_op = O_add; |
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| 357 | else |
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| 358 | i386_intel_fold (e, e->X_op_symbol); |
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| 359 | break; |
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| 360 | |||
| 361 | case O_offset: |
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| 362 | intel_state.has_offset = 1; |
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| 363 | ++intel_state.in_offset; |
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| 364 | ret = i386_intel_simplify_symbol (e->X_add_symbol); |
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| 365 | --intel_state.in_offset; |
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| 366 | if (!ret || !i386_intel_check(the_reg, base, state_index)) |
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| 367 | return 0; |
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| 368 | i386_intel_fold (e, e->X_add_symbol); |
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| 369 | return ret; |
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| 370 | |||
| 371 | case O_byte_ptr: |
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| 372 | case O_word_ptr: |
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| 373 | case O_dword_ptr: |
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| 374 | case O_fword_ptr: |
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| 375 | case O_qword_ptr: |
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| 376 | case O_tbyte_ptr: |
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| 377 | case O_oword_ptr: |
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| 378 | case O_xmmword_ptr: |
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| 379 | case O_ymmword_ptr: |
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| 380 | case O_zmmword_ptr: |
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| 381 | case O_near_ptr: |
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| 382 | case O_far_ptr: |
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| 383 | if (intel_state.op_modifier == O_absent) |
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| 384 | intel_state.op_modifier = e->X_op; |
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| 385 | /* FALLTHROUGH */ |
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| 386 | case O_short: |
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| 387 | if (symbol_get_value_expression (e->X_add_symbol)->X_op |
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| 388 | == O_register) |
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| 389 | { |
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| 390 | as_bad (_("invalid use of register")); |
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| 391 | return 0; |
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| 392 | } |
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| 393 | if (!i386_intel_simplify_symbol (e->X_add_symbol)) |
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| 394 | return 0; |
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| 395 | i386_intel_fold (e, e->X_add_symbol); |
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| 396 | break; |
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| 397 | |||
| 398 | case O_full_ptr: |
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| 399 | if (symbol_get_value_expression (e->X_op_symbol)->X_op |
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| 400 | == O_register) |
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| 401 | { |
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| 402 | as_bad (_("invalid use of register")); |
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| 403 | return 0; |
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| 404 | } |
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| 405 | if (!i386_intel_simplify_symbol (e->X_op_symbol) |
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| 406 | || !i386_intel_check(the_reg, intel_state.base, |
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| 407 | intel_state.index)) |
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| 408 | return 0; |
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| 409 | if (!intel_state.in_offset) |
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| 410 | intel_state.seg = e->X_add_symbol; |
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| 411 | i386_intel_fold (e, e->X_op_symbol); |
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| 412 | break; |
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| 413 | |||
| 414 | case O_multiply: |
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| 415 | if (this_operand >= 0 && intel_state.in_bracket) |
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| 416 | { |
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| 417 | expressionS *scale = NULL; |
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| 418 | |||
| 419 | if (intel_state.index) |
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| 420 | --scale; |
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| 421 | |||
| 422 | if (!intel_state.in_scale++) |
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| 423 | intel_state.scale_factor = 1; |
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| 424 | |||
| 425 | ret = i386_intel_simplify_symbol (e->X_add_symbol); |
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| 426 | if (ret && !scale && intel_state.index) |
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| 427 | scale = symbol_get_value_expression (e->X_op_symbol); |
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| 428 | |||
| 429 | if (ret) |
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| 430 | ret = i386_intel_simplify_symbol (e->X_op_symbol); |
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| 431 | if (ret && !scale && intel_state.index) |
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| 432 | scale = symbol_get_value_expression (e->X_add_symbol); |
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| 433 | |||
| 434 | if (ret && scale && (scale + 1)) |
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| 435 | { |
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| 436 | resolve_expression (scale); |
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| 437 | if (scale->X_op != O_constant |
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| 438 | || intel_state.index->reg_type.bitfield.reg16) |
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| 439 | scale->X_add_number = 0; |
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| 440 | intel_state.scale_factor *= scale->X_add_number; |
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| 441 | } |
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| 442 | |||
| 443 | --intel_state.in_scale; |
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| 444 | if (!ret) |
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| 445 | return 0; |
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| 446 | |||
| 447 | if (!intel_state.in_scale) |
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| 448 | switch (intel_state.scale_factor) |
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| 449 | { |
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| 450 | case 1: |
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| 451 | i.log2_scale_factor = 0; |
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| 452 | break; |
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| 453 | case 2: |
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| 454 | i.log2_scale_factor = 1; |
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| 455 | break; |
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| 456 | case 4: |
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| 457 | i.log2_scale_factor = 2; |
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| 458 | break; |
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| 459 | case 8: |
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| 460 | i.log2_scale_factor = 3; |
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| 461 | break; |
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| 462 | default: |
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| 463 | /* esp is invalid as index */ |
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| 464 | intel_state.index = i386_regtab + REGNAM_EAX + ESP_REG_NUM; |
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| 465 | break; |
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| 466 | } |
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| 467 | |||
| 468 | break; |
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| 469 | } |
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| 470 | goto fallthrough; |
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| 471 | |||
| 472 | case O_register: |
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| 473 | ret = i386_intel_simplify_register (e); |
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| 474 | if (ret == 2) |
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| 475 | { |
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| 476 | gas_assert (e->X_add_number < (unsigned short) -1); |
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| 477 | e->X_md = (unsigned short) e->X_add_number + 1; |
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| 478 | e->X_op = O_constant; |
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| 479 | e->X_add_number = 0; |
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| 480 | } |
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| 481 | return ret; |
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| 482 | |||
| 483 | case O_constant: |
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| 484 | if (e->X_md) |
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| 485 | return i386_intel_simplify_register (e); |
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| 486 | |||
| 487 | /* FALLTHROUGH */ |
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| 488 | default: |
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| 489 | fallthrough: |
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| 490 | if (e->X_add_symbol |
||
| 491 | && !i386_intel_simplify_symbol (e->X_add_symbol)) |
||
| 492 | return 0; |
||
| 493 | if (e->X_op == O_add || e->X_op == O_subtract) |
||
| 494 | { |
||
| 495 | base = intel_state.base; |
||
| 496 | state_index = intel_state.index; |
||
| 497 | } |
||
| 498 | if (!i386_intel_check (the_reg, base, state_index) |
||
| 499 | || (e->X_op_symbol |
||
| 500 | && !i386_intel_simplify_symbol (e->X_op_symbol)) |
||
| 501 | || !i386_intel_check (the_reg, |
||
| 502 | (e->X_op != O_add |
||
| 503 | ? base : intel_state.base), |
||
| 504 | (e->X_op != O_add |
||
| 505 | ? state_index : intel_state.index))) |
||
| 506 | return 0; |
||
| 507 | break; |
||
| 508 | } |
||
| 509 | |||
| 510 | if (this_operand >= 0 |
||
| 511 | && e->X_op == O_symbol |
||
| 512 | && !intel_state.in_offset) |
||
| 513 | { |
||
| 514 | segT seg = S_GET_SEGMENT (e->X_add_symbol); |
||
| 515 | |||
| 516 | if (seg != absolute_section |
||
| 517 | && seg != reg_section |
||
| 518 | && seg != expr_section) |
||
| 519 | intel_state.is_mem |= 2 - !intel_state.in_bracket; |
||
| 520 | } |
||
| 521 | |||
| 522 | return 1; |
||
| 523 | } |
||
| 524 | |||
| 525 | int i386_need_index_operator (void) |
||
| 526 | { |
||
| 527 | return intel_syntax < 0; |
||
| 528 | } |
||
| 529 | |||
| 530 | static int |
||
| 531 | i386_intel_operand (char *operand_string, int got_a_float) |
||
| 532 | { |
||
| 533 | char *saved_input_line_pointer, *buf; |
||
| 534 | segT exp_seg; |
||
| 535 | expressionS exp, *expP; |
||
| 536 | char suffix = 0; |
||
| 537 | int ret; |
||
| 538 | |||
| 539 | /* Handle vector immediates. */ |
||
| 540 | if (RC_SAE_immediate (operand_string)) |
||
| 541 | return 1; |
||
| 542 | |||
| 543 | /* Initialize state structure. */ |
||
| 544 | intel_state.op_modifier = O_absent; |
||
| 545 | intel_state.is_mem = 0; |
||
| 546 | intel_state.is_indirect = 0; |
||
| 547 | intel_state.has_offset = 0; |
||
| 548 | intel_state.base = NULL; |
||
| 549 | intel_state.index = NULL; |
||
| 550 | intel_state.seg = NULL; |
||
| 551 | operand_type_set (&intel_state.reloc_types, ~0); |
||
| 552 | gas_assert (!intel_state.in_offset); |
||
| 553 | gas_assert (!intel_state.in_bracket); |
||
| 554 | gas_assert (!intel_state.in_scale); |
||
| 555 | |||
| 556 | saved_input_line_pointer = input_line_pointer; |
||
| 557 | input_line_pointer = buf = xstrdup (operand_string); |
||
| 558 | |||
| 559 | intel_syntax = -1; |
||
| 560 | memset (&exp, 0, sizeof(exp)); |
||
| 561 | exp_seg = expression (&exp); |
||
| 562 | ret = i386_intel_simplify (&exp); |
||
| 563 | intel_syntax = 1; |
||
| 564 | |||
| 565 | SKIP_WHITESPACE (); |
||
| 566 | |||
| 567 | /* Handle vector operations. */ |
||
| 568 | if (*input_line_pointer == '{') |
||
| 569 | { |
||
| 570 | char *end = check_VecOperations (input_line_pointer, NULL); |
||
| 571 | if (end) |
||
| 572 | input_line_pointer = end; |
||
| 573 | else |
||
| 574 | ret = 0; |
||
| 575 | } |
||
| 576 | |||
| 577 | if (!is_end_of_line[(unsigned char) *input_line_pointer]) |
||
| 578 | { |
||
| 579 | as_bad (_("junk `%s' after expression"), input_line_pointer); |
||
| 580 | ret = 0; |
||
| 581 | } |
||
| 582 | else if (exp.X_op == O_illegal || exp.X_op == O_absent) |
||
| 583 | { |
||
| 584 | as_bad (_("invalid expression")); |
||
| 585 | ret = 0; |
||
| 586 | } |
||
| 587 | else if (!intel_state.has_offset |
||
| 588 | && input_line_pointer > buf |
||
| 589 | && *(input_line_pointer - 1) == ']') |
||
| 590 | { |
||
| 591 | intel_state.is_mem |= 1; |
||
| 592 | intel_state.is_indirect = 1; |
||
| 593 | } |
||
| 594 | |||
| 595 | input_line_pointer = saved_input_line_pointer; |
||
| 596 | free (buf); |
||
| 597 | |||
| 598 | gas_assert (!intel_state.in_offset); |
||
| 599 | gas_assert (!intel_state.in_bracket); |
||
| 600 | gas_assert (!intel_state.in_scale); |
||
| 601 | |||
| 602 | if (!ret) |
||
| 603 | return 0; |
||
| 604 | |||
| 605 | if (intel_state.op_modifier != O_absent |
||
| 606 | && current_templates->start->base_opcode != 0x8d /* lea */) |
||
| 607 | { |
||
| 608 | i.types[this_operand].bitfield.unspecified = 0; |
||
| 609 | |||
| 610 | switch (intel_state.op_modifier) |
||
| 611 | { |
||
| 612 | case O_byte_ptr: |
||
| 613 | i.types[this_operand].bitfield.byte = 1; |
||
| 614 | suffix = BYTE_MNEM_SUFFIX; |
||
| 615 | break; |
||
| 616 | |||
| 617 | case O_word_ptr: |
||
| 618 | i.types[this_operand].bitfield.word = 1; |
||
| 619 | if ((current_templates->start->name[0] == 'l' |
||
| 620 | && current_templates->start->name[2] == 's' |
||
| 621 | && current_templates->start->name[3] == 0) |
||
| 622 | || current_templates->start->base_opcode == 0x62 /* bound */) |
||
| 623 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ |
||
| 624 | else if (got_a_float == 2) /* "fi..." */ |
||
| 625 | suffix = SHORT_MNEM_SUFFIX; |
||
| 626 | else |
||
| 627 | suffix = WORD_MNEM_SUFFIX; |
||
| 628 | break; |
||
| 629 | |||
| 630 | case O_dword_ptr: |
||
| 631 | i.types[this_operand].bitfield.dword = 1; |
||
| 632 | if ((current_templates->start->name[0] == 'l' |
||
| 633 | && current_templates->start->name[2] == 's' |
||
| 634 | && current_templates->start->name[3] == 0) |
||
| 635 | || current_templates->start->base_opcode == 0x62 /* bound */) |
||
| 636 | suffix = WORD_MNEM_SUFFIX; |
||
| 637 | else if (flag_code == CODE_16BIT |
||
| 638 | && (current_templates->start->opcode_modifier.jump |
||
| 639 | || current_templates->start->opcode_modifier.jumpdword)) |
||
| 640 | suffix = LONG_DOUBLE_MNEM_SUFFIX; |
||
| 641 | else if (got_a_float == 1) /* "f..." */ |
||
| 642 | suffix = SHORT_MNEM_SUFFIX; |
||
| 643 | else |
||
| 644 | suffix = LONG_MNEM_SUFFIX; |
||
| 645 | break; |
||
| 646 | |||
| 647 | case O_fword_ptr: |
||
| 648 | i.types[this_operand].bitfield.fword = 1; |
||
| 649 | if (current_templates->start->name[0] == 'l' |
||
| 650 | && current_templates->start->name[2] == 's' |
||
| 651 | && current_templates->start->name[3] == 0) |
||
| 652 | suffix = LONG_MNEM_SUFFIX; |
||
| 653 | else if (!got_a_float) |
||
| 654 | { |
||
| 655 | if (flag_code == CODE_16BIT) |
||
| 656 | add_prefix (DATA_PREFIX_OPCODE); |
||
| 657 | suffix = LONG_DOUBLE_MNEM_SUFFIX; |
||
| 658 | } |
||
| 659 | else |
||
| 660 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ |
||
| 661 | break; |
||
| 662 | |||
| 663 | case O_qword_ptr: |
||
| 664 | i.types[this_operand].bitfield.qword = 1; |
||
| 665 | if (current_templates->start->base_opcode == 0x62 /* bound */ |
||
| 666 | || got_a_float == 1) /* "f..." */ |
||
| 667 | suffix = LONG_MNEM_SUFFIX; |
||
| 668 | else |
||
| 669 | suffix = QWORD_MNEM_SUFFIX; |
||
| 670 | break; |
||
| 671 | |||
| 672 | case O_tbyte_ptr: |
||
| 673 | i.types[this_operand].bitfield.tbyte = 1; |
||
| 674 | if (got_a_float == 1) |
||
| 675 | suffix = LONG_DOUBLE_MNEM_SUFFIX; |
||
| 676 | else |
||
| 677 | suffix = BYTE_MNEM_SUFFIX; /* so it will cause an error */ |
||
| 678 | break; |
||
| 679 | |||
| 680 | case O_oword_ptr: |
||
| 681 | case O_xmmword_ptr: |
||
| 682 | i.types[this_operand].bitfield.xmmword = 1; |
||
| 683 | suffix = XMMWORD_MNEM_SUFFIX; |
||
| 684 | break; |
||
| 685 | |||
| 686 | case O_ymmword_ptr: |
||
| 687 | i.types[this_operand].bitfield.ymmword = 1; |
||
| 688 | suffix = YMMWORD_MNEM_SUFFIX; |
||
| 689 | break; |
||
| 690 | |||
| 691 | case O_zmmword_ptr: |
||
| 692 | i.types[this_operand].bitfield.zmmword = 1; |
||
| 693 | suffix = ZMMWORD_MNEM_SUFFIX; |
||
| 694 | break; |
||
| 695 | |||
| 696 | case O_far_ptr: |
||
| 697 | suffix = LONG_DOUBLE_MNEM_SUFFIX; |
||
| 698 | /* FALLTHROUGH */ |
||
| 699 | case O_near_ptr: |
||
| 700 | if (!current_templates->start->opcode_modifier.jump |
||
| 701 | && !current_templates->start->opcode_modifier.jumpdword) |
||
| 702 | suffix = got_a_float /* so it will cause an error */ |
||
| 703 | ? BYTE_MNEM_SUFFIX |
||
| 704 | : LONG_DOUBLE_MNEM_SUFFIX; |
||
| 705 | break; |
||
| 706 | |||
| 707 | default: |
||
| 708 | BAD_CASE (intel_state.op_modifier); |
||
| 709 | break; |
||
| 710 | } |
||
| 711 | |||
| 712 | if (!i.suffix) |
||
| 713 | i.suffix = suffix; |
||
| 714 | else if (i.suffix != suffix) |
||
| 715 | { |
||
| 716 | as_bad (_("conflicting operand size modifiers")); |
||
| 717 | return 0; |
||
| 718 | } |
||
| 719 | } |
||
| 720 | |||
| 721 | /* Operands for jump/call need special consideration. */ |
||
| 722 | if (current_templates->start->opcode_modifier.jump |
||
| 723 | || current_templates->start->opcode_modifier.jumpdword |
||
| 724 | || current_templates->start->opcode_modifier.jumpintersegment) |
||
| 725 | { |
||
| 726 | if (i.op[this_operand].regs |
||
| 727 | || intel_state.base |
||
| 728 | || intel_state.index |
||
| 729 | || intel_state.is_mem > 1) |
||
| 730 | i.types[this_operand].bitfield.jumpabsolute = 1; |
||
| 731 | else |
||
| 732 | switch (intel_state.op_modifier) |
||
| 733 | { |
||
| 734 | case O_near_ptr: |
||
| 735 | if (intel_state.seg) |
||
| 736 | i.types[this_operand].bitfield.jumpabsolute = 1; |
||
| 737 | else |
||
| 738 | intel_state.is_mem = 1; |
||
| 739 | break; |
||
| 740 | case O_far_ptr: |
||
| 741 | case O_absent: |
||
| 742 | if (!intel_state.seg) |
||
| 743 | { |
||
| 744 | intel_state.is_mem = 1; |
||
| 745 | if (intel_state.op_modifier == O_absent) |
||
| 746 | { |
||
| 747 | if (intel_state.is_indirect == 1) |
||
| 748 | i.types[this_operand].bitfield.jumpabsolute = 1; |
||
| 749 | break; |
||
| 750 | } |
||
| 751 | as_bad (_("cannot infer the segment part of the operand")); |
||
| 752 | return 0; |
||
| 753 | } |
||
| 754 | else if (S_GET_SEGMENT (intel_state.seg) == reg_section) |
||
| 755 | i.types[this_operand].bitfield.jumpabsolute = 1; |
||
| 756 | else |
||
| 757 | { |
||
| 758 | i386_operand_type types; |
||
| 759 | |||
| 760 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) |
||
| 761 | { |
||
| 762 | as_bad (_("at most %d immediate operands are allowed"), |
||
| 763 | MAX_IMMEDIATE_OPERANDS); |
||
| 764 | return 0; |
||
| 765 | } |
||
| 766 | expP = &im_expressions[i.imm_operands++]; |
||
| 767 | memset (expP, 0, sizeof(*expP)); |
||
| 768 | expP->X_op = O_symbol; |
||
| 769 | expP->X_add_symbol = intel_state.seg; |
||
| 770 | i.op[this_operand].imms = expP; |
||
| 771 | |||
| 772 | resolve_expression (expP); |
||
| 773 | operand_type_set (&types, ~0); |
||
| 774 | if (!i386_finalize_immediate (S_GET_SEGMENT (intel_state.seg), |
||
| 775 | expP, types, operand_string)) |
||
| 776 | return 0; |
||
| 777 | if (i.operands < MAX_OPERANDS) |
||
| 778 | { |
||
| 779 | this_operand = i.operands++; |
||
| 780 | i.types[this_operand].bitfield.unspecified = 1; |
||
| 781 | } |
||
| 782 | if (suffix == LONG_DOUBLE_MNEM_SUFFIX) |
||
| 783 | i.suffix = 0; |
||
| 784 | intel_state.seg = NULL; |
||
| 785 | intel_state.is_mem = 0; |
||
| 786 | } |
||
| 787 | break; |
||
| 788 | default: |
||
| 789 | i.types[this_operand].bitfield.jumpabsolute = 1; |
||
| 790 | break; |
||
| 791 | } |
||
| 792 | if (i.types[this_operand].bitfield.jumpabsolute) |
||
| 793 | intel_state.is_mem |= 1; |
||
| 794 | } |
||
| 795 | else if (intel_state.seg) |
||
| 796 | intel_state.is_mem |= 1; |
||
| 797 | |||
| 798 | if (i.op[this_operand].regs) |
||
| 799 | { |
||
| 800 | i386_operand_type temp; |
||
| 801 | |||
| 802 | /* Register operand. */ |
||
| 803 | if (intel_state.base || intel_state.index || intel_state.seg) |
||
| 804 | { |
||
| 805 | as_bad (_("invalid operand")); |
||
| 806 | return 0; |
||
| 807 | } |
||
| 808 | |||
| 809 | temp = i.op[this_operand].regs->reg_type; |
||
| 810 | temp.bitfield.baseindex = 0; |
||
| 811 | i.types[this_operand] = operand_type_or (i.types[this_operand], |
||
| 812 | temp); |
||
| 813 | i.types[this_operand].bitfield.unspecified = 0; |
||
| 814 | ++i.reg_operands; |
||
| 815 | } |
||
| 816 | else if (intel_state.base |
||
| 817 | || intel_state.index |
||
| 818 | || intel_state.seg |
||
| 819 | || intel_state.is_mem) |
||
| 820 | { |
||
| 821 | /* Memory operand. */ |
||
| 822 | if ((int) i.mem_operands |
||
| 823 | >= 2 - !current_templates->start->opcode_modifier.isstring) |
||
| 824 | { |
||
| 825 | /* Handle |
||
| 826 | |||
| 827 | call 0x9090,0x90909090 |
||
| 828 | lcall 0x9090,0x90909090 |
||
| 829 | jmp 0x9090,0x90909090 |
||
| 830 | ljmp 0x9090,0x90909090 |
||
| 831 | */ |
||
| 832 | |||
| 833 | if ((current_templates->start->opcode_modifier.jumpintersegment |
||
| 834 | || current_templates->start->opcode_modifier.jumpdword |
||
| 835 | || current_templates->start->opcode_modifier.jump) |
||
| 836 | && this_operand == 1 |
||
| 837 | && intel_state.seg == NULL |
||
| 838 | && i.mem_operands == 1 |
||
| 839 | && i.disp_operands == 1 |
||
| 840 | && intel_state.op_modifier == O_absent) |
||
| 841 | { |
||
| 842 | /* Try to process the first operand as immediate, */ |
||
| 843 | this_operand = 0; |
||
| 844 | if (i386_finalize_immediate (exp_seg, i.op[0].imms, |
||
| 845 | intel_state.reloc_types, |
||
| 846 | NULL)) |
||
| 847 | { |
||
| 848 | this_operand = 1; |
||
| 849 | expP = &im_expressions[0]; |
||
| 850 | i.op[this_operand].imms = expP; |
||
| 851 | *expP = exp; |
||
| 852 | |||
| 853 | /* Try to process the second operand as immediate, */ |
||
| 854 | if (i386_finalize_immediate (exp_seg, expP, |
||
| 855 | intel_state.reloc_types, |
||
| 856 | NULL)) |
||
| 857 | { |
||
| 858 | i.mem_operands = 0; |
||
| 859 | i.disp_operands = 0; |
||
| 860 | i.imm_operands = 2; |
||
| 861 | i.types[0].bitfield.mem = 0; |
||
| 862 | i.types[0].bitfield.disp16 = 0; |
||
| 863 | i.types[0].bitfield.disp32 = 0; |
||
| 864 | i.types[0].bitfield.disp32s = 0; |
||
| 865 | return 1; |
||
| 866 | } |
||
| 867 | } |
||
| 868 | } |
||
| 869 | |||
| 870 | as_bad (_("too many memory references for `%s'"), |
||
| 871 | current_templates->start->name); |
||
| 872 | return 0; |
||
| 873 | } |
||
| 874 | |||
| 875 | expP = &disp_expressions[i.disp_operands]; |
||
| 876 | memcpy (expP, &exp, sizeof(exp)); |
||
| 877 | resolve_expression (expP); |
||
| 878 | |||
| 879 | if (expP->X_op != O_constant |
||
| 880 | || expP->X_add_number |
||
| 881 | || (!intel_state.base |
||
| 882 | && !intel_state.index)) |
||
| 883 | { |
||
| 884 | i.op[this_operand].disps = expP; |
||
| 885 | i.disp_operands++; |
||
| 886 | |||
| 887 | if (flag_code == CODE_64BIT) |
||
| 888 | { |
||
| 889 | i.types[this_operand].bitfield.disp32 = 1; |
||
| 890 | if (!i.prefix[ADDR_PREFIX]) |
||
| 891 | { |
||
| 892 | i.types[this_operand].bitfield.disp64 = 1; |
||
| 893 | i.types[this_operand].bitfield.disp32s = 1; |
||
| 894 | } |
||
| 895 | } |
||
| 896 | else if (!i.prefix[ADDR_PREFIX] ^ (flag_code == CODE_16BIT)) |
||
| 897 | i.types[this_operand].bitfield.disp32 = 1; |
||
| 898 | else |
||
| 899 | i.types[this_operand].bitfield.disp16 = 1; |
||
| 900 | |||
| 901 | #if defined (OBJ_AOUT) || defined (OBJ_MAYBE_AOUT) |
||
| 902 | /* |
||
| 903 | * exp_seg is used only for verification in |
||
| 904 | * i386_finalize_displacement, and we can end up seeing reg_section |
||
| 905 | * here - but we know we removed all registers from the expression |
||
| 906 | * (or error-ed on any remaining ones) in i386_intel_simplify. I |
||
| 907 | * consider the check in i386_finalize_displacement bogus anyway, in |
||
| 908 | * particular because it doesn't allow for expr_section, so I'd |
||
| 909 | * rather see that check (and the similar one in |
||
| 910 | * i386_finalize_immediate) use SEG_NORMAL(), but not being an a.out |
||
| 911 | * expert I can't really say whether that would have other bad side |
||
| 912 | * effects. |
||
| 913 | */ |
||
| 914 | if (OUTPUT_FLAVOR == bfd_target_aout_flavour |
||
| 915 | && exp_seg == reg_section) |
||
| 916 | exp_seg = expP->X_op != O_constant ? undefined_section |
||
| 917 | : absolute_section; |
||
| 918 | #endif |
||
| 919 | |||
| 920 | if (!i386_finalize_displacement (exp_seg, expP, |
||
| 921 | intel_state.reloc_types, |
||
| 922 | operand_string)) |
||
| 923 | return 0; |
||
| 924 | } |
||
| 925 | |||
| 926 | if (intel_state.base || intel_state.index) |
||
| 927 | i.types[this_operand].bitfield.baseindex = 1; |
||
| 928 | |||
| 929 | if (intel_state.seg) |
||
| 930 | { |
||
| 931 | for (;;) |
||
| 932 | { |
||
| 933 | expP = symbol_get_value_expression (intel_state.seg); |
||
| 934 | if (expP->X_op != O_full_ptr) |
||
| 935 | break; |
||
| 936 | intel_state.seg = expP->X_add_symbol; |
||
| 937 | } |
||
| 938 | if (expP->X_op != O_register) |
||
| 939 | { |
||
| 940 | as_bad (_("segment register name expected")); |
||
| 941 | return 0; |
||
| 942 | } |
||
| 943 | if (!i386_regtab[expP->X_add_number].reg_type.bitfield.sreg2 |
||
| 944 | && !i386_regtab[expP->X_add_number].reg_type.bitfield.sreg3) |
||
| 945 | { |
||
| 946 | as_bad (_("invalid use of register")); |
||
| 947 | return 0; |
||
| 948 | } |
||
| 949 | switch (i386_regtab[expP->X_add_number].reg_num) |
||
| 950 | { |
||
| 951 | case 0: i.seg[i.mem_operands] = &es; break; |
||
| 952 | case 1: i.seg[i.mem_operands] = &cs; break; |
||
| 953 | case 2: i.seg[i.mem_operands] = &ss; break; |
||
| 954 | case 3: i.seg[i.mem_operands] = &ds; break; |
||
| 955 | case 4: i.seg[i.mem_operands] = &fs; break; |
||
| 956 | case 5: i.seg[i.mem_operands] = &gs; break; |
||
| 957 | case RegFlat: i.seg[i.mem_operands] = NULL; break; |
||
| 958 | } |
||
| 959 | } |
||
| 960 | |||
| 961 | /* Swap base and index in 16-bit memory operands like |
||
| 962 | [si+bx]. Since i386_index_check is also used in AT&T |
||
| 963 | mode we have to do that here. */ |
||
| 964 | if (intel_state.base |
||
| 965 | && intel_state.index |
||
| 966 | && intel_state.base->reg_type.bitfield.reg16 |
||
| 967 | && intel_state.index->reg_type.bitfield.reg16 |
||
| 968 | && intel_state.base->reg_num >= 6 |
||
| 969 | && intel_state.index->reg_num < 6) |
||
| 970 | { |
||
| 971 | i.base_reg = intel_state.index; |
||
| 972 | i.index_reg = intel_state.base; |
||
| 973 | } |
||
| 974 | else |
||
| 975 | { |
||
| 976 | i.base_reg = intel_state.base; |
||
| 977 | i.index_reg = intel_state.index; |
||
| 978 | } |
||
| 979 | |||
| 980 | if (!i386_index_check (operand_string)) |
||
| 981 | return 0; |
||
| 982 | |||
| 983 | i.types[this_operand].bitfield.mem = 1; |
||
| 984 | ++i.mem_operands; |
||
| 985 | } |
||
| 986 | else |
||
| 987 | { |
||
| 988 | /* Immediate. */ |
||
| 989 | if (i.imm_operands >= MAX_IMMEDIATE_OPERANDS) |
||
| 990 | { |
||
| 991 | as_bad (_("at most %d immediate operands are allowed"), |
||
| 992 | MAX_IMMEDIATE_OPERANDS); |
||
| 993 | return 0; |
||
| 994 | } |
||
| 995 | |||
| 996 | expP = &im_expressions[i.imm_operands++]; |
||
| 997 | i.op[this_operand].imms = expP; |
||
| 998 | *expP = exp; |
||
| 999 | |||
| 1000 | return i386_finalize_immediate (exp_seg, expP, intel_state.reloc_types, |
||
| 1001 | operand_string); |
||
| 1002 | } |
||
| 1003 | |||
| 1004 | return 1; |
||
| 1005 | } |