+++ /dev/null
-/*
- * Copyright 2014 Advanced Micro Devices, Inc.
- *
- * 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.
- *
- * Authors: Tom Stellard <thomas.stellard@amd.com>
- *
- */
-
-#include "radeon_elf_util.h"
-#include "r600_pipe_common.h"
-
-#include "util/u_memory.h"
-
-#include <gelf.h>
-#include <libelf.h>
-#include <stdio.h>
-
-static void parse_symbol_table(Elf_Data *symbol_table_data,
- const GElf_Shdr *symbol_table_header,
- struct ac_shader_binary *binary)
-{
- GElf_Sym symbol;
- unsigned i = 0;
- unsigned symbol_count =
- symbol_table_header->sh_size / symbol_table_header->sh_entsize;
-
- /* We are over allocating this list, because symbol_count gives the
- * total number of symbols, and we will only be filling the list
- * with offsets of global symbols. The memory savings from
- * allocating the correct size of this list will be small, and
- * I don't think it is worth the cost of pre-computing the number
- * of global symbols.
- */
- binary->global_symbol_offsets = CALLOC(symbol_count, sizeof(uint64_t));
-
- while (gelf_getsym(symbol_table_data, i++, &symbol)) {
- unsigned i;
- if (GELF_ST_BIND(symbol.st_info) != STB_GLOBAL ||
- symbol.st_shndx == 0 /* Undefined symbol */) {
- continue;
- }
-
- binary->global_symbol_offsets[binary->global_symbol_count] =
- symbol.st_value;
-
- /* Sort the list using bubble sort. This list will usually
- * be small. */
- for (i = binary->global_symbol_count; i > 0; --i) {
- uint64_t lhs = binary->global_symbol_offsets[i - 1];
- uint64_t rhs = binary->global_symbol_offsets[i];
- if (lhs < rhs) {
- break;
- }
- binary->global_symbol_offsets[i] = lhs;
- binary->global_symbol_offsets[i - 1] = rhs;
- }
- ++binary->global_symbol_count;
- }
-}
-
-static void parse_relocs(Elf *elf, Elf_Data *relocs, Elf_Data *symbols,
- unsigned symbol_sh_link,
- struct ac_shader_binary *binary)
-{
- unsigned i;
-
- if (!relocs || !symbols || !binary->reloc_count) {
- return;
- }
- binary->relocs = CALLOC(binary->reloc_count,
- sizeof(struct ac_shader_reloc));
- for (i = 0; i < binary->reloc_count; i++) {
- GElf_Sym symbol;
- GElf_Rel rel;
- char *symbol_name;
- struct ac_shader_reloc *reloc = &binary->relocs[i];
-
- gelf_getrel(relocs, i, &rel);
- gelf_getsym(symbols, GELF_R_SYM(rel.r_info), &symbol);
- symbol_name = elf_strptr(elf, symbol_sh_link, symbol.st_name);
-
- reloc->offset = rel.r_offset;
- strncpy(reloc->name, symbol_name, sizeof(reloc->name)-1);
- reloc->name[sizeof(reloc->name)-1] = 0;
- }
-}
-
-void radeon_elf_read(const char *elf_data, unsigned elf_size,
- struct ac_shader_binary *binary)
-{
- char *elf_buffer;
- Elf *elf;
- Elf_Scn *section = NULL;
- Elf_Data *symbols = NULL, *relocs = NULL;
- size_t section_str_index;
- unsigned symbol_sh_link = 0;
-
- /* One of the libelf implementations
- * (http://www.mr511.de/software/english.htm) requires calling
- * elf_version() before elf_memory().
- */
- elf_version(EV_CURRENT);
- elf_buffer = MALLOC(elf_size);
- memcpy(elf_buffer, elf_data, elf_size);
-
- elf = elf_memory(elf_buffer, elf_size);
-
- elf_getshdrstrndx(elf, §ion_str_index);
-
- while ((section = elf_nextscn(elf, section))) {
- const char *name;
- Elf_Data *section_data = NULL;
- GElf_Shdr section_header;
- if (gelf_getshdr(section, §ion_header) != §ion_header) {
- fprintf(stderr, "Failed to read ELF section header\n");
- return;
- }
- name = elf_strptr(elf, section_str_index, section_header.sh_name);
- if (!strcmp(name, ".text")) {
- section_data = elf_getdata(section, section_data);
- binary->code_size = section_data->d_size;
- binary->code = MALLOC(binary->code_size * sizeof(unsigned char));
- memcpy(binary->code, section_data->d_buf, binary->code_size);
- } else if (!strcmp(name, ".AMDGPU.config")) {
- section_data = elf_getdata(section, section_data);
- binary->config_size = section_data->d_size;
- binary->config = MALLOC(binary->config_size * sizeof(unsigned char));
- memcpy(binary->config, section_data->d_buf, binary->config_size);
- } else if (!strcmp(name, ".AMDGPU.disasm")) {
- /* Always read disassembly if it's available. */
- section_data = elf_getdata(section, section_data);
- binary->disasm_string = strndup(section_data->d_buf,
- section_data->d_size);
- } else if (!strncmp(name, ".rodata", 7)) {
- section_data = elf_getdata(section, section_data);
- binary->rodata_size = section_data->d_size;
- binary->rodata = MALLOC(binary->rodata_size * sizeof(unsigned char));
- memcpy(binary->rodata, section_data->d_buf, binary->rodata_size);
- } else if (!strncmp(name, ".symtab", 7)) {
- symbols = elf_getdata(section, section_data);
- symbol_sh_link = section_header.sh_link;
- parse_symbol_table(symbols, §ion_header, binary);
- } else if (!strcmp(name, ".rel.text")) {
- relocs = elf_getdata(section, section_data);
- binary->reloc_count = section_header.sh_size /
- section_header.sh_entsize;
- }
- }
-
- parse_relocs(elf, relocs, symbols, symbol_sh_link, binary);
-
- if (elf){
- elf_end(elf);
- }
- FREE(elf_buffer);
-
- /* Cache the config size per symbol */
- if (binary->global_symbol_count) {
- binary->config_size_per_symbol =
- binary->config_size / binary->global_symbol_count;
- } else {
- binary->global_symbol_count = 1;
- binary->config_size_per_symbol = binary->config_size;
- }
-}
-
-const unsigned char *radeon_shader_binary_config_start(
- const struct ac_shader_binary *binary,
- uint64_t symbol_offset)
-{
- unsigned i;
- for (i = 0; i < binary->global_symbol_count; ++i) {
- if (binary->global_symbol_offsets[i] == symbol_offset) {
- unsigned offset = i * binary->config_size_per_symbol;
- return binary->config + offset;
- }
- }
- return binary->config;
-}
+++ /dev/null
-/*
- * Copyright 2014 Advanced Micro Devices, Inc.
- *
- * 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.
- *
- * Authors: Tom Stellard <thomas.stellard@amd.com>
- *
- */
-
-#ifndef RADEON_ELF_UTIL_H
-#define RADEON_ELF_UTIL_H
-
-#include <stdint.h>
-
-struct ac_shader_binary;
-
-/*
- * Parse the elf binary stored in \p elf_data and create a
- * radeon_shader_binary object.
- */
-void radeon_elf_read(const char *elf_data, unsigned elf_size,
- struct ac_shader_binary *binary);
-
-/**
- * @returns A pointer to the start of the configuration information for
- * the function starting at \p symbol_offset of the binary.
- */
-const unsigned char *radeon_shader_binary_config_start(
- const struct ac_shader_binary *binary,
- uint64_t symbol_offset);
-
-#endif /* RADEON_ELF_UTIL_H */
projects / mesa.git / commitdiff