1 /* 2 * GAS-compatible parser Intel syntax support 3 * 4 * Copyright (C) 2010 Alexei Svitkine 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the author nor the names of other contributors 15 * may be used to endorse or promote products derived from this 16 * software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``AS IS'' 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR OTHER CONTRIBUTORS BE 22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 #include <util.h> 31 32 #include <libyasm.h> 33 34 #include "modules/parsers/gas/gas-parser.h" 35 #include "modules/parsers/nasm/nasm-parser-struct.h" 36 37 extern yasm_bytecode *gas_intel_syntax_parse_instr(yasm_parser_nasm *parser_nasm, unsigned char *instr); 38 39 #define SET_FIELDS(to, from) \ 40 (to)->object = (from)->object; \ 41 (to)->locallabel_base = (from)->locallabel_base; \ 42 (to)->locallabel_base_len = (from)->locallabel_base_len; \ 43 (to)->preproc = (from)->preproc; \ 44 (to)->errwarns = (from)->errwarns; \ 45 (to)->linemap = (from)->linemap; \ 46 (to)->prev_bc = (from)->prev_bc; 47 48 yasm_bytecode *parse_instr_intel(yasm_parser_gas *parser_gas) 49 { 50 char *stok, *slim; 51 unsigned char *line; 52 size_t length; 53 54 yasm_parser_nasm parser_nasm; 55 yasm_bytecode *bc; 56 57 memset(&parser_nasm, 0, sizeof(parser_nasm)); 58 59 yasm_arch_set_var(parser_gas->object->arch, "gas_intel_mode", 1); 60 SET_FIELDS(&parser_nasm, parser_gas); 61 parser_nasm.masm = 1; 62 63 stok = (char *) parser_gas->s.tok; 64 slim = (char *) parser_gas->s.lim; 65 length = 0; 66 while (&stok[length] < slim && stok[length] != '\n') { 67 length++; 68 } 69 70 if (&stok[length] == slim && parser_gas->line) { 71 line = yasm_xmalloc(length + parser_gas->lineleft + 1); 72 memcpy(line, parser_gas->s.tok, length); 73 memcpy(line + length, parser_gas->linepos, parser_gas->lineleft); 74 length += parser_gas->lineleft; 75 if (line[length - 1] == '\n') length--; 76 } else { 77 line = yasm_xmalloc(length + 1); 78 memcpy(line, parser_gas->s.tok, length); 79 } 80 line[length] = '\0'; 81 82 bc = gas_intel_syntax_parse_instr(&parser_nasm, line); 83 84 SET_FIELDS(parser_gas, &parser_nasm); 85 yasm_arch_set_var(parser_gas->object->arch, "gas_intel_mode", 0); 86 87 yasm_xfree(line); 88 89 return bc; 90 } 91
