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IABSD.fr/xenocara/lib/mesa/src/intel/compiler/brw_disasm_tool.c
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- lib/mesa/src/intel/compiler/brw_disasm_tool.c
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/* * Copyright © 2018 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <getopt.h> #include "compiler/brw_disasm.h" #include "compiler/brw_isa_info.h" #include "dev/intel_device_info.h" #include "util/u_dynarray.h" enum opt_input_type { OPT_INPUT_BINARY, OPT_INPUT_C_LITERAL, }; static enum opt_input_type input_type = OPT_INPUT_BINARY; /* Return size of file in bytes pointed by fp */ static long i965_disasm_get_file_size(FILE *fp) { long size; fseek(fp, 0L, SEEK_END); size = ftell(fp); fseek(fp, 0L, SEEK_SET); return size; } /* Read hex file which should be in following format: * for example : * { 0x00000000, 0x00000000, 0x00000000, 0x00000000 } */ static void * i965_disasm_read_c_literal_file(FILE *fp, size_t *end) { struct util_dynarray assembly = {}; uint32_t temp[2]; if (fscanf(fp, " { ") == EOF) { fprintf(stderr, "Couldn't find opening `{`\n"); return NULL; } if (fscanf(fp, "0x%x , 0x%x", &temp[0], &temp[1]) == 2) { util_dynarray_append(&assembly, uint32_t, temp[0]); util_dynarray_append(&assembly, uint32_t, temp[1]); } else { fprintf(stderr, "Couldn't read hex values\n"); return NULL; } while (fscanf(fp, " , 0x%x , 0x%x ", &temp[0], &temp[1]) == 2) { util_dynarray_append(&assembly, uint32_t, temp[0]); util_dynarray_append(&assembly, uint32_t, temp[1]); } if (fscanf(fp, "}") == EOF) { fprintf(stderr, "Couldn't find closing `}`\n"); return NULL; } *end = assembly.size; return assembly.data; } static void * i965_disasm_read_binary(FILE *fp, size_t *end) { size_t size; void *assembly; long sz = i965_disasm_get_file_size(fp); if (sz < 0) return NULL; *end = (size_t)sz; if (!*end) return NULL; assembly = malloc(*end + 1); if (assembly == NULL) return NULL; size = fread(assembly, *end, 1, fp); if (!size) { free(assembly); return NULL; } return assembly; } static void print_help(const char *progname, FILE *file) { fprintf(file, "Usage: %s [OPTION]...\n" "Disassemble i965 instructions from binary file.\n\n" " --help display this help and exit\n" " --input-path=PATH read binary file from binary file PATH\n" " --type=INPUT_TYPE INPUT_TYPE can be 'bin' (default if omitted),\n" " 'c_literal'.\n" " --gen=platform disassemble instructions for given \n" " platform (3 letter platform name)\n", progname); } int main(int argc, char *argv[]) { FILE *fp = NULL; void *assembly = NULL; char *file_path = NULL; size_t start = 0, end = 0; uint16_t pci_id = 0; int c; int result = EXIT_FAILURE; bool help = false; const struct option i965_disasm_opts[] = { { "help", no_argument, (int *) &help, true }, { "input-path", required_argument, NULL, 'i' }, { "type", required_argument, NULL, 't' }, { "gen", required_argument, NULL, 'g'}, { NULL, 0, NULL, 0 } }; while ((c = getopt_long(argc, argv, ":i:t:g:h", i965_disasm_opts, NULL)) != -1) { switch (c) { case 'g': { const int id = intel_device_name_to_pci_device_id(optarg); if (id < 0) { fprintf(stderr, "can't parse gen: '%s', expected 3 letter " "platform name\n", optarg); goto end; } else { pci_id = id; } break; } case 'i': file_path = strdup(optarg); fp = fopen(file_path, "r"); if (!fp) { fprintf(stderr, "Unable to read input file : %s\n", file_path); goto end; } break; case 't': if (strcmp(optarg, "c_literal") == 0) { input_type = OPT_INPUT_C_LITERAL; } else if (strcmp(optarg, "bin") == 0) { input_type = OPT_INPUT_BINARY; } else { fprintf(stderr, "invalid value for --type: %s\n", optarg); goto end; } break; case 'h': help = true; print_help(argv[0], stderr); goto end; case 0: break; case ':': fprintf(stderr, "%s: option `-%c' requires an argument\n", argv[0], optopt); goto end; case '?': default: fprintf(stderr, "%s: option `-%c' is invalid: ignored\n", argv[0], optopt); goto end; } } if (help || !file_path || !pci_id) { print_help(argv[0], stderr); exit(0); } struct intel_device_info devinfo; if (!intel_get_device_info_from_pci_id(pci_id, &devinfo)) { fprintf(stderr, "can't find device information: pci_id=0x%x\n", pci_id); exit(EXIT_FAILURE); } if (devinfo.ver < 9) { fprintf(stderr, "device has gfx version %d but must be >= 9, try elk_disasm instead", devinfo.ver); exit(EXIT_FAILURE); } struct brw_isa_info isa; brw_init_isa_info(&isa, &devinfo); if (input_type == OPT_INPUT_BINARY) assembly = i965_disasm_read_binary(fp, &end); else if (input_type == OPT_INPUT_C_LITERAL) assembly = i965_disasm_read_c_literal_file(fp, &end); if (!assembly) { if (end) fprintf(stderr, "Unable to allocate buffer to read input file\n"); else fprintf(stderr, "Failed to read input file\n"); goto end; } /* Disassemble i965 instructions from buffer assembly */ brw_disassemble_with_labels(&isa, assembly, start, end, stdout); result = EXIT_SUCCESS; end: if (fp) fclose(fp); free(file_path); free(assembly); exit(result); }