1 /* 2 * Copyright 2014 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 */ 23 24 #include <stdlib.h> 25 26 #include "brw_context.h" 27 #include "brw_inst.h" 28 #include "brw_eu.h" 29 30 #include "gen_disasm.h" 31 32 uint64_t INTEL_DEBUG; 33 34 struct gen_disasm { 35 struct gen_device_info devinfo; 36 }; 37 38 static bool 39 is_send(uint32_t opcode) 40 { 41 return (opcode == BRW_OPCODE_SEND || 42 opcode == BRW_OPCODE_SENDC || 43 opcode == BRW_OPCODE_SENDS || 44 opcode == BRW_OPCODE_SENDSC ); 45 } 46 47 void 48 gen_disasm_disassemble(struct gen_disasm *disasm, void *assembly, 49 int start, FILE *out) 50 { 51 struct gen_device_info *devinfo = &disasm->devinfo; 52 bool dump_hex = false; 53 int offset = start; 54 55 /* This loop exits when send-with-EOT or when opcode is 0 */ 56 while (true) { 57 brw_inst *insn = assembly + offset; 58 brw_inst uncompacted; 59 bool compacted = brw_inst_cmpt_control(devinfo, insn); 60 if (0) 61 fprintf(out, "0x%08x: ", offset); 62 63 if (compacted) { 64 brw_compact_inst *compacted = (void *)insn; 65 if (dump_hex) { 66 fprintf(out, "0x%08x 0x%08x ", 67 ((uint32_t *)insn)[1], 68 ((uint32_t *)insn)[0]); 69 } 70 71 brw_uncompact_instruction(devinfo, &uncompacted, compacted); 72 insn = &uncompacted; 73 offset += 8; 74 } else { 75 if (dump_hex) { 76 fprintf(out, "0x%08x 0x%08x 0x%08x 0x%08x ", 77 ((uint32_t *)insn)[3], 78 ((uint32_t *)insn)[2], 79 ((uint32_t *)insn)[1], 80 ((uint32_t *)insn)[0]); 81 } 82 offset += 16; 83 } 84 85 brw_disassemble_inst(out, devinfo, insn, compacted); 86 87 /* Simplistic, but efficient way to terminate disasm */ 88 uint32_t opcode = brw_inst_opcode(devinfo, insn); 89 if (opcode == 0 || (is_send(opcode) && brw_inst_eot(devinfo, insn))) { 90 break; 91 } 92 } 93 } 94 95 struct gen_disasm * 96 gen_disasm_create(int pciid) 97 { 98 struct gen_disasm *gd; 99 100 gd = malloc(sizeof *gd); 101 if (gd == NULL) 102 return NULL; 103 104 if (!gen_get_device_info(pciid, &gd->devinfo)) { 105 free(gd); 106 return NULL; 107 } 108 109 brw_init_compaction_tables(&gd->devinfo); 110 111 return gd; 112 } 113 114 void 115 gen_disasm_destroy(struct gen_disasm *disasm) 116 { 117 free(disasm); 118 } 119