diff options
Diffstat (limited to 'src/gallium/drivers/radeon/radeon_elf_util.c')
| -rw-r--r-- | src/gallium/drivers/radeon/radeon_elf_util.c | 197 |
1 files changed, 0 insertions, 197 deletions
diff --git a/src/gallium/drivers/radeon/radeon_elf_util.c b/src/gallium/drivers/radeon/radeon_elf_util.c deleted file mode 100644 index 21a7ed5c87e..00000000000 --- a/src/gallium/drivers/radeon/radeon_elf_util.c +++ /dev/null @@ -1,197 +0,0 @@ -/* - * 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 <[email protected]> - * - */ - -#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; -} |