| 1 | /* Lattice Mico32 opcode support. -*- C -*- |
| 2 | Copyright 2008, 2009 Free Software Foundation, Inc. |
| 3 | Contributed by Jon Beniston <jon@beniston.com> |
| 4 | |
| 5 | This file is part of the GNU Binutils. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | /* -- opc.h */ |
| 23 | |
| 24 | /* Allows reason codes to be output when assembler errors occur. */ |
| 25 | #define CGEN_VERBOSE_ASSEMBLER_ERRORS |
| 26 | |
| 27 | #define CGEN_DIS_HASH_SIZE 64 |
| 28 | #define CGEN_DIS_HASH(buf,value) ((value >> 26) & 0x3f) |
| 29 | |
| 30 | /* -- asm.c */ |
| 31 | |
| 32 | /* Handle signed/unsigned literal. */ |
| 33 | |
| 34 | static const char * |
| 35 | parse_imm (CGEN_CPU_DESC cd, |
| 36 | const char **strp, |
| 37 | int opindex, |
| 38 | unsigned long *valuep) |
| 39 | { |
| 40 | const char *errmsg; |
| 41 | signed long value; |
| 42 | |
| 43 | errmsg = cgen_parse_signed_integer (cd, strp, opindex, & value); |
| 44 | if (errmsg == NULL) |
| 45 | { |
| 46 | unsigned long x = value & 0xFFFF0000; |
| 47 | if (x != 0 && x != 0xFFFF0000) |
| 48 | errmsg = _("immediate value out of range"); |
| 49 | else |
| 50 | *valuep = (value & 0xFFFF); |
| 51 | } |
| 52 | return errmsg; |
| 53 | } |
| 54 | |
| 55 | /* Handle hi() */ |
| 56 | |
| 57 | static const char * |
| 58 | parse_hi16 (CGEN_CPU_DESC cd, |
| 59 | const char **strp, |
| 60 | int opindex, |
| 61 | unsigned long *valuep) |
| 62 | { |
| 63 | if (strncasecmp (*strp, "hi(", 3) == 0) |
| 64 | { |
| 65 | enum cgen_parse_operand_result result_type; |
| 66 | bfd_vma value; |
| 67 | const char *errmsg; |
| 68 | |
| 69 | *strp += 3; |
| 70 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16, |
| 71 | &result_type, &value); |
| 72 | if (**strp != ')') |
| 73 | return _("missing `)'"); |
| 74 | |
| 75 | ++*strp; |
| 76 | if (errmsg == NULL |
| 77 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) |
| 78 | value = (value >> 16) & 0xffff; |
| 79 | *valuep = value; |
| 80 | |
| 81 | return errmsg; |
| 82 | } |
| 83 | |
| 84 | return parse_imm (cd, strp, opindex, valuep); |
| 85 | } |
| 86 | |
| 87 | /* Handle lo() */ |
| 88 | |
| 89 | static const char * |
| 90 | parse_lo16 (CGEN_CPU_DESC cd, |
| 91 | const char **strp, |
| 92 | int opindex, |
| 93 | unsigned long *valuep) |
| 94 | { |
| 95 | if (strncasecmp (*strp, "lo(", 3) == 0) |
| 96 | { |
| 97 | const char *errmsg; |
| 98 | enum cgen_parse_operand_result result_type; |
| 99 | bfd_vma value; |
| 100 | |
| 101 | *strp += 3; |
| 102 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16, |
| 103 | &result_type, &value); |
| 104 | if (**strp != ')') |
| 105 | return _("missing `)'"); |
| 106 | ++*strp; |
| 107 | if (errmsg == NULL |
| 108 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) |
| 109 | value &= 0xffff; |
| 110 | *valuep = value; |
| 111 | return errmsg; |
| 112 | } |
| 113 | |
| 114 | return parse_imm (cd, strp, opindex, valuep); |
| 115 | } |
| 116 | |
| 117 | /* Handle gp() */ |
| 118 | |
| 119 | static const char * |
| 120 | parse_gp16 (CGEN_CPU_DESC cd, |
| 121 | const char **strp, |
| 122 | int opindex, |
| 123 | long *valuep) |
| 124 | { |
| 125 | if (strncasecmp (*strp, "gp(", 3) == 0) |
| 126 | { |
| 127 | const char *errmsg; |
| 128 | enum cgen_parse_operand_result result_type; |
| 129 | bfd_vma value; |
| 130 | |
| 131 | *strp += 3; |
| 132 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_GPREL16, |
| 133 | & result_type, & value); |
| 134 | if (**strp != ')') |
| 135 | return _("missing `)'"); |
| 136 | ++*strp; |
| 137 | if (errmsg == NULL |
| 138 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) |
| 139 | value &= 0xffff; |
| 140 | *valuep = value; |
| 141 | return errmsg; |
| 142 | } |
| 143 | |
| 144 | return _("expecting gp relative address: gp(symbol)"); |
| 145 | } |
| 146 | |
| 147 | /* Handle got() */ |
| 148 | |
| 149 | static const char * |
| 150 | parse_got16 (CGEN_CPU_DESC cd, |
| 151 | const char **strp, |
| 152 | int opindex, |
| 153 | long *valuep) |
| 154 | { |
| 155 | if (strncasecmp (*strp, "got(", 4) == 0) |
| 156 | { |
| 157 | const char *errmsg; |
| 158 | enum cgen_parse_operand_result result_type; |
| 159 | bfd_vma value; |
| 160 | |
| 161 | *strp += 4; |
| 162 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LM32_16_GOT, |
| 163 | & result_type, & value); |
| 164 | if (**strp != ')') |
| 165 | return _("missing `)'"); |
| 166 | ++*strp; |
| 167 | if (errmsg == NULL |
| 168 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) |
| 169 | value &= 0xffff; |
| 170 | *valuep = value; |
| 171 | return errmsg; |
| 172 | } |
| 173 | |
| 174 | return _("expecting got relative address: got(symbol)"); |
| 175 | } |
| 176 | |
| 177 | /* Handle gotoffhi16() */ |
| 178 | |
| 179 | static const char * |
| 180 | parse_gotoff_hi16 (CGEN_CPU_DESC cd, |
| 181 | const char **strp, |
| 182 | int opindex, |
| 183 | long *valuep) |
| 184 | { |
| 185 | if (strncasecmp (*strp, "gotoffhi16(", 11) == 0) |
| 186 | { |
| 187 | const char *errmsg; |
| 188 | enum cgen_parse_operand_result result_type; |
| 189 | bfd_vma value; |
| 190 | |
| 191 | *strp += 11; |
| 192 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LM32_GOTOFF_HI16, |
| 193 | & result_type, & value); |
| 194 | if (**strp != ')') |
| 195 | return _("missing `)'"); |
| 196 | ++*strp; |
| 197 | if (errmsg == NULL |
| 198 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) |
| 199 | value &= 0xffff; |
| 200 | *valuep = value; |
| 201 | return errmsg; |
| 202 | } |
| 203 | |
| 204 | return _("expecting got relative address: gotoffhi16(symbol)"); |
| 205 | } |
| 206 | |
| 207 | /* Handle gotofflo16() */ |
| 208 | |
| 209 | static const char * |
| 210 | parse_gotoff_lo16 (CGEN_CPU_DESC cd, |
| 211 | const char **strp, |
| 212 | int opindex, |
| 213 | long *valuep) |
| 214 | { |
| 215 | if (strncasecmp (*strp, "gotofflo16(", 11) == 0) |
| 216 | { |
| 217 | const char *errmsg; |
| 218 | enum cgen_parse_operand_result result_type; |
| 219 | bfd_vma value; |
| 220 | |
| 221 | *strp += 11; |
| 222 | errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LM32_GOTOFF_LO16, |
| 223 | &result_type, &value); |
| 224 | if (**strp != ')') |
| 225 | return _("missing `)'"); |
| 226 | ++*strp; |
| 227 | if (errmsg == NULL |
| 228 | && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) |
| 229 | value &= 0xffff; |
| 230 | *valuep = value; |
| 231 | return errmsg; |
| 232 | } |
| 233 | |
| 234 | return _("expecting got relative address: gotofflo16(symbol)"); |
| 235 | } |