From 40fc4b5acd65b4dcc1f216e605fc84eff695ff4a Mon Sep 17 00:00:00 2001 From: Sagar Ghuge Date: Wed, 29 Aug 2018 10:52:41 -0700 Subject: [PATCH] intel/tools: new i965_disasm tool Adds a new i965 instruction disassemble tool v2: 1) fix a few nits (Matt Turner) 2) Remove i965_disasm header (Matt Turner) v3: 1) Redirect output to correct file descriptors (Matt Turner) 2) Refactor code (Matt Turner) 3) Use better formatting style (Matt Turner) Reviewed-by: Matt Turner Signed-off-by: Sagar Ghuge --- src/intel/Makefile.tools.am | 14 +++ src/intel/tools/i965_disasm.c | 182 ++++++++++++++++++++++++++++++++++ src/intel/tools/meson.build | 11 ++ 3 files changed, 207 insertions(+) create mode 100644 src/intel/tools/i965_disasm.c diff --git a/src/intel/Makefile.tools.am b/src/intel/Makefile.tools.am index 30c8d3b3f7d..4809962b188 100644 --- a/src/intel/Makefile.tools.am +++ b/src/intel/Makefile.tools.am @@ -22,6 +22,7 @@ noinst_PROGRAMS += \ tools/aubinator \ tools/aubinator_error_decode \ + tools/i965_disasm \ tools/error2aub @@ -66,6 +67,19 @@ tools_aubinator_error_decode_CFLAGS = \ $(AM_CFLAGS) \ $(ZLIB_CFLAGS) +tools_i965_disasm_SOURCES = \ + tools/i965_disasm.c + +tools_i965_disasm_LDADD = \ + common/libintel_common.la \ + compiler/libintel_compiler.la \ + dev/libintel_dev.la \ + $(top_builddir)/src/util/libmesautil.la \ + $(PTHREAD_LIBS) + +tools_i965_disasm_CFLAGS = \ + $(AM_CFLAGS) + tools_error2aub_SOURCES = \ tools/gen_context.h \ diff --git a/src/intel/tools/i965_disasm.c b/src/intel/tools/i965_disasm.c new file mode 100644 index 00000000000..73a6760fc13 --- /dev/null +++ b/src/intel/tools/i965_disasm.c @@ -0,0 +1,182 @@ +/* + * 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 +#include +#include +#include + +#include "compiler/brw_eu.h" +#include "dev/gen_device_info.h" + +uint64_t INTEL_DEBUG; + +/* Return size of file in bytes pointed by fp */ +static size_t +i965_disasm_get_file_size(FILE *fp) +{ + size_t size; + + fseek(fp, 0L, SEEK_END); + size = ftell(fp); + fseek(fp, 0L, SEEK_SET); + + return size; +} + +static void * +i965_disasm_read_binary(FILE *fp, size_t *end) +{ + void *assembly; + + *end = i965_disasm_get_file_size(fp); + + assembly = malloc(*end + 1); + if (assembly == NULL) + return NULL; + + fread(assembly, *end, 1, fp); + fclose(fp); + + return assembly; +} + +static struct gen_device_info * +i965_disasm_init(uint16_t pci_id) +{ + struct gen_device_info *devinfo; + + devinfo = malloc(sizeof *devinfo); + if (devinfo == NULL) + return NULL; + + if (!gen_get_device_info(pci_id, devinfo)) { + fprintf(stderr, "can't find device information: pci_id=0x%x\n", + pci_id); + exit(EXIT_FAILURE); + } + + /* initialize compaction table in order to handle compacted instructions */ + brw_init_compaction_tables(devinfo); + + return devinfo; +} + +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" + " --binary-path=PATH read binary file from binary file PATH\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 *binary_path = NULL; + size_t start = 0, end = 0; + uint16_t pci_id = 0; + int c, i; + struct gen_device_info *devinfo; + + bool help = false; + const struct option i965_disasm_opts[] = { + { "help", no_argument, (int *) &help, true }, + { "binary-path", required_argument, NULL, 'b' }, + { "gen", required_argument, NULL, 'g'}, + { NULL, 0, NULL, 0 } + }; + + i = 0; + while ((c = getopt_long(argc, argv, "", i965_disasm_opts, &i)) != -1) { + switch (c) { + case 'g': { + const int id = gen_device_name_to_pci_device_id(optarg); + if (id < 0) { + fprintf(stderr, "can't parse gen: '%s', expected 3 letter " + "platform name\n", optarg); + /* Clean up binary path if given pci id is wrong */ + if (binary_path) { + free(binary_path); + fclose(fp); + } + exit(EXIT_FAILURE); + } else { + pci_id = id; + } + break; + } + case 'b': + binary_path = strdup(optarg); + fp = fopen(binary_path, "rb"); + if (!fp) { + fprintf(stderr, "Unable to read input binary file : %s\n", + binary_path); + /* free binary_path if path is wrong */ + free(binary_path); + exit(EXIT_FAILURE); + } + break; + default: + /* Clean up binary path if given option is wrong */ + if (binary_path) { + free(binary_path); + fclose(fp); + } + break; + } + } + + if (help || !binary_path || !pci_id) { + print_help(argv[0], stderr); + exit(0); + } + + devinfo = i965_disasm_init(pci_id); + if (!devinfo) { + fprintf(stderr, "Unable to allocate memory for " + "gen_device_info struct instance.\n"); + exit(EXIT_FAILURE); + } + + assembly = i965_disasm_read_binary(fp, &end); + if (!assembly) { + fprintf(stderr, "Unable to allocate buffer to read binary file\n"); + exit(EXIT_FAILURE); + } + + /* Disassemble i965 instructions from buffer assembly */ + brw_disassemble(devinfo, assembly, start, end, stdout); + + free(binary_path); + free(assembly); + free(devinfo); + + return EXIT_SUCCESS; +} diff --git a/src/intel/tools/meson.build b/src/intel/tools/meson.build index 0fe39fa4873..3617478ad73 100644 --- a/src/intel/tools/meson.build +++ b/src/intel/tools/meson.build @@ -49,6 +49,17 @@ aubinator_error_decode = executable( install : true ) +i965_disasm = executable( + 'i965_disasm', + files('i965_disasm.c'), + dependencies : [dep_thread], + include_directories : [inc_common, inc_intel], + link_with : [libintel_common, libintel_compiler, libintel_dev, libmesa_util], + c_args : [c_vis_args, no_override_init_args], + build_by_default : true, + install : true +) + error2aub = executable( 'intel_error2aub', files('aub_write.h', 'aub_write.c', 'error2aub.c'), -- 2.30.2