From 4fc431b355e1e818be19f5d533356cf21d80bfd3 Mon Sep 17 00:00:00 2001 From: Adrian Warecki Date: Thu, 30 Mar 2023 16:26:48 +0200 Subject: [PATCH] elf: Remove unused elf.c Removed elf.c file that is no longer in use. Signed-off-by: Adrian Warecki --- src/elf.c | 685 ------------------------------------ src/include/rimage/rimage.h | 10 - 2 files changed, 695 deletions(-) delete mode 100644 src/elf.c diff --git a/src/elf.c b/src/elf.c deleted file mode 100644 index 3843635d469f..000000000000 --- a/src/elf.c +++ /dev/null @@ -1,685 +0,0 @@ -// SPDX-License-Identifier: BSD-3-Clause -// -// Copyright(c) 2017 Intel Corporation. All rights reserved. -// -// Author: Liam Girdwood -// Keyon Jie - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -static unsigned long uncache_to_cache(const struct image *image, unsigned long address) -{ - return (address & ~image->adsp->mem.alias.mask) | image->adsp->mem.alias.cached; -} - -static int elf_read_sections(struct image *image, struct manifest_module *module, - int module_index) -{ - Elf32_Ehdr *hdr = &module->hdr; - Elf32_Shdr *section = module->section; - size_t count; - int i, ret; - uint32_t valid = (SHF_WRITE | SHF_ALLOC | SHF_EXECINSTR); - unsigned long rom_base = image->adsp->mem.zones[SOF_FW_BLK_TYPE_ROM].base; - size_t rom_size = image->adsp->mem.zones[SOF_FW_BLK_TYPE_ROM].size; - - /* read in section header */ - ret = fseek(module->fd, hdr->shoff, SEEK_SET); - if (ret < 0) { - fprintf(stderr, "error: can't seek to %s section header %d\n", - module->elf_file, ret); - return ret; - } - - /* allocate space for each section header */ - section = calloc(hdr->shnum, sizeof(Elf32_Shdr)); - if (!section) - return -ENOMEM; - module->section = section; - - /* read in sections */ - count = fread(section, sizeof(Elf32_Shdr), hdr->shnum, module->fd); - if (count != hdr->shnum) { - fprintf(stderr, "error: failed to read %s section header %d\n", - module->elf_file, -errno); - return -errno; - } - - /* read in strings */ - assert(hdr->shstrndx < count); - module->strings = calloc(1, section[hdr->shstrndx].size); - if (!module->strings) { - fprintf(stderr, "error: failed %s to read ELF strings for %d\n", - module->elf_file, -errno); - return -errno; - } - - ret = fseek(module->fd, section[hdr->shstrndx].off, SEEK_SET); - if (ret < 0) { - fprintf(stderr, "error: can't seek to %s stringss %d\n", - module->elf_file, ret); - return ret; - } - - count = fread(module->strings, 1, section[hdr->shstrndx].size, - module->fd); - if (count != section[hdr->shstrndx].size) { - fprintf(stderr, "error: failed to read %s strings %d\n", - module->elf_file, -errno); - return -errno; - } - - if (module->is_bootloader) { - /* In case of multiple modules first one should be bootloader, - * that should not have these sections. - */ - fprintf(stdout, "info: ignore .bss" - " section for bootloader module\n"); - - module->bss_start = 0; - module->bss_end = 0; - } else { - /* find manifest module data */ - module->bss_index = elf_find_section(module, ".bss"); - if (module->bss_index < 0) - return module->bss_index; - } - - /* parse each section */ - for (i = 0; i < hdr->shnum; i++) { - /* only write valid sections */ - if (!(section[i].flags & valid)) - continue; - - switch (section[i].type) { - case SHT_NOBITS: - /* bss */ - module->bss_size += section[i].size; - module->num_bss++; - break; - case SHT_INIT_ARRAY: - /* fall through */ - case SHT_PROGBITS: - /* text or data */ - module->output_size += section[i].size; - - if (section[i].flags & SHF_EXECINSTR) - module->text_size += section[i].size; - else - module->data_size += section[i].size; - break; - default: - continue; - } - - /* - * Don't convert ROM addresses, ROM sections aren't included in - * the output image - */ - if (section[i].vaddr < rom_base || section[i].vaddr >= rom_base + rom_size) - section[i].vaddr = uncache_to_cache(image, section[i].vaddr); - - module->num_sections++; - - if (!image->verbose) - continue; - - fprintf(stdout, " %s section-%d: \ttype\t 0x%8.8x\n", - module->elf_file, i, section[i].type); - fprintf(stdout, " %s section-%d: \tflags\t 0x%8.8x\n", - module->elf_file, i, section[i].flags); - fprintf(stdout, " %s section-%d: \taddr\t 0x%8.8x\n", - module->elf_file, i, section[i].vaddr); - fprintf(stdout, " %s section-%d: \toffset\t 0x%8.8x\n", - module->elf_file, i, section[i].off); - fprintf(stdout, " %s section-%d: \tsize\t 0x%8.8x\n", - module->elf_file, i, section[i].size); - fprintf(stdout, " %s section-%d: \tlink\t 0x%8.8x\n", - module->elf_file, i, section[i].link); - fprintf(stdout, " %s section-%d: \tinfo\t 0x%8.8x\n\n", - module->elf_file, i, section[i].info); - } - - return 0; -} - -static int elf_read_programs(struct image *image, struct manifest_module *module) -{ - Elf32_Ehdr *hdr = &module->hdr; - Elf32_Phdr *prg = module->prg; - size_t count; - int i, ret; - - /* read in program header */ - ret = fseek(module->fd, hdr->phoff, SEEK_SET); - if (ret < 0) { - fprintf(stderr, "error: cant seek to %s program header %d\n", - module->elf_file, ret); - return ret; - } - - /* allocate space for programs */ - prg = calloc(sizeof(Elf32_Phdr), hdr->phnum); - if (!prg) - return -ENOMEM; - module->prg = prg; - - /* read in programs */ - count = fread(prg, sizeof(Elf32_Phdr), hdr->phnum, module->fd); - if (count != hdr->phnum) { - fprintf(stderr, "error: failed to read %s program header %d\n", - module->elf_file, -errno); - return -errno; - } - - /* check each program */ - for (i = 0; i < hdr->phnum; i++) { - if (prg[i].filesz == 0) - continue; - - if (!image->verbose) - continue; - - fprintf(stdout, "%s program-%d: \ttype\t 0x%8.8x\n", - module->elf_file, i, prg[i].type); - fprintf(stdout, "%s program-%d: \toffset\t 0x%8.8x\n", - module->elf_file, i, prg[i].off); - fprintf(stdout, "%s program-%d: \tvaddr\t 0x%8.8x\n", - module->elf_file, i, prg[i].vaddr); - fprintf(stdout, "%s program-%d: \tpaddr\t 0x%8.8x\n", - module->elf_file, i, prg[i].paddr); - fprintf(stdout, "%s program-%d: \tfsize\t 0x%8.8x\n", - module->elf_file, i, prg[i].filesz); - fprintf(stdout, "%s program-%d: \tmsize\t 0x%8.8x\n", - module->elf_file, i, prg[i].memsz); - fprintf(stdout, "%s program-%d: \tflags\t 0x%8.8x\n\n", - module->elf_file, i, prg[i].flags); - } - - return 0; -} - -static int elf_read_hdr(struct image *image, struct manifest_module *module) -{ - Elf32_Ehdr *hdr = &module->hdr; - size_t count; - - /* read in elf header */ - count = fread(hdr, sizeof(*hdr), 1, module->fd); - if (count != 1) { - fprintf(stderr, "error: failed to read %s elf header %d\n", - module->elf_file, -errno); - return -errno; - } - - if (strncmp((char *)hdr->ident, "\177ELF\001\001", 5)) { - fprintf(stderr, "Not a 32 bits ELF-LE file\n"); - return -EINVAL; - } - - if (!image->verbose) - return 0; - - fprintf(stdout, "%s elf: \tentry point\t 0x%8.8x\n", - module->elf_file, hdr->entry); - fprintf(stdout, "%s elf: \tprogram offset\t 0x%8.8x\n", - module->elf_file, hdr->phoff); - fprintf(stdout, "%s elf: \tsection offset\t 0x%8.8x\n", - module->elf_file, hdr->shoff); - fprintf(stdout, "%s elf: \tprogram size\t 0x%8.8x\n", - module->elf_file, hdr->phentsize); - fprintf(stdout, "%s elf: \tprogram count\t 0x%8.8x\n", - module->elf_file, hdr->phnum); - fprintf(stdout, "%s elf: \tsection size\t 0x%8.8x\n", - module->elf_file, hdr->shentsize); - fprintf(stdout, "%s elf: \tsection count\t 0x%8.8x\n", - module->elf_file, hdr->shnum); - fprintf(stdout, "%s elf: \tstring index\t 0x%8.8x\n\n", - module->elf_file, hdr->shstrndx); - - return 0; -} - -int elf_is_rom(struct image *image, Elf32_Shdr *section) -{ - uint32_t start, end; - uint32_t base, size; - - start = section->vaddr; - end = section->vaddr + section->size; - - base = image->adsp->mem.zones[SOF_FW_BLK_TYPE_ROM].base; - size = image->adsp->mem.zones[SOF_FW_BLK_TYPE_ROM].size; - - if (start < base || start > base + size) - return 0; - if (end < base || end > base + size) - return 0; - return 1; -} - -static void elf_module_size(struct image *image, struct manifest_module *module, - Elf32_Shdr *section, uint32_t lma, int index) -{ - switch (section->type) { - case SHT_INIT_ARRAY: - /* fall through */ - case SHT_PROGBITS: - /* text or data */ - if (section->flags & SHF_EXECINSTR) { - /* text */ - if (module->text_start > lma) - module->text_start = lma; - if (module->text_end < lma + section->size) - module->text_end = lma + section->size; - fprintf(stdout, "\tTEXT\t"); - } else { - /* initialized data, also calc the writable sections */ - if (module->data_start > lma) - module->data_start = lma; - if (module->data_end < lma + section->size) - module->data_end = lma + section->size; - - fprintf(stdout, "\tDATA\t"); - } - break; - case SHT_NOBITS: - /* bss */ - if (index == module->bss_index) { - /* updated the .bss segment */ - module->bss_start = section->vaddr; - module->bss_end = section->vaddr + section->size; - fprintf(stdout, "\tBSS\t"); - } else { - fprintf(stdout, "\tHEAP\t"); - } - break; - case SHT_NOTE: - fprintf(stdout, "\tNOTE\t"); - break; - default: - break; - } -} - -static void elf_module_size_reloc(struct image *image, struct manifest_module *module, - Elf32_Shdr *section, int index) -{ - switch (section->type) { - case SHT_PROGBITS: - /* text or data */ - if (section->flags & SHF_EXECINSTR) { - /* text */ - module->text_start = 0; - module->text_end += section->size; - - fprintf(stdout, "\tTEXT\t"); - } else { - /* initialized data, also calc the writable sections */ - module->data_start = 0; - module->data_end += section->size; - - fprintf(stdout, "\tDATA\t"); - } - break; - case SHT_NOBITS: - /* bss */ - if (index == module->bss_index) { - /* updated the .bss segment */ - module->bss_start = section->vaddr; - module->bss_end = section->vaddr + section->size; - fprintf(stdout, "\tBSS\t"); - } else { - fprintf(stdout, "\tHEAP\t"); - } - break; - default: - break; - } -} - -static void elf_module_limits(struct image *image, struct manifest_module *module) -{ - Elf32_Shdr *section; - uint32_t valid = (SHF_WRITE | SHF_ALLOC | SHF_EXECINSTR); - uint32_t section_lma; - int i, j; - - module->text_start = 0xffffffff; - module->data_start = 0xffffffff; - module->bss_start = 0; - module->text_end = 0; - module->data_end = 0; - module->bss_end = 0; - - fprintf(stdout, " Found %d sections, listing valid sections......\n", - module->hdr.shnum); - - fprintf(stdout, "\tNo\tLMA\t\tVMA\t\tEnd\t\tSize\tType\tName\n"); - - /* iterate all sections and get size of segments */ - for (i = 0; i < module->hdr.shnum; i++) { - section = &module->section[i]; - - /* module bss can sometimes be missed */ - if (i != module->bss_index) { - /* only check valid sections */ - if (!(section->flags & valid)) - continue; - - if (section->size == 0) - continue; - - if (elf_is_rom(image, section)) - continue; - } - /* check programs to get LMA */ - section_lma = section->vaddr; - for (j = 0; j < module->hdr.phnum; j++) { - if (section->vaddr == uncache_to_cache(image, module->prg[j].vaddr)) { - section_lma = uncache_to_cache(image, module->prg[j].paddr); - break; - } - } - - fprintf(stdout, "\t%d\t0x%8.8x\t0x%8.8x\t0x%8.8x\t0x%x", i, - section_lma, section->vaddr, - section->vaddr + section->size, section->size); - - /* text or data section */ - if (image->reloc) - elf_module_size_reloc(image, module, section, i); - else - elf_module_size(image, module, section, section_lma, i); - - /* section name */ - fprintf(stdout, "%s\n", module->strings + section->name); - } - - fprintf(stdout, "\n"); -} - -/* make sure no section overlap from any modules */ -int elf_validate_section(struct image *image, struct manifest_module *module, - Elf32_Shdr *section, int index) -{ - struct manifest_module *m; - Elf32_Shdr *s; - uint32_t valid = (SHF_WRITE | SHF_ALLOC | SHF_EXECINSTR); - int i, j; - - /* for each module */ - for (i = 0; i < image->num_modules; i++) { - m = &image->module[i]; - - /* for each section */ - for (j = 0; j < m->hdr.shnum; j++) { - s = &m->section[j]; - - if (s == section) - continue; - - /* only check valid sections */ - if (!(s->flags & valid)) - continue; - - if (s->size == 0) - continue; - - /* is section start non overlapping ? */ - if (section->vaddr >= s->vaddr && - section->vaddr < - s->vaddr + s->size) { - goto err; - } - - /* is section end non overlapping ? */ - if (section->vaddr + section->size > s->vaddr && - section->vaddr + section->size <= - s->vaddr + s->size) { - goto err; - } - } - } - - return 0; - -err: - fprintf(stderr, "error: section overlap between %s:%d and %s:%d\n", - module->elf_file, index, m->elf_file, j); - fprintf(stderr, " [0x%x : 0x%x] overlaps with [0x%x :0x%x]\n", - section->vaddr, section->vaddr + section->size, - s->vaddr, s->vaddr + s->size); - return -EINVAL; -} - -/* make sure no section overlaps from any modules */ -int elf_validate_modules(struct image *image) -{ - struct manifest_module *module; - Elf32_Shdr *section; - uint32_t valid = (SHF_WRITE | SHF_ALLOC | SHF_EXECINSTR); - int i, j, ret; - - /* relocatable modules have no physical addresses until runtime */ - if (image->reloc) - return 0; - - /* for each module */ - for (i = 0; i < image->num_modules; i++) { - module = &image->module[i]; - - /* for each section */ - for (j = 0; j < module->hdr.shnum; j++) { - section = &module->section[j]; - - /* only check valid sections */ - if (!(section->flags & valid)) - continue; - - if (section->size == 0) - continue; - - /* is section non overlapping ? */ - ret = elf_validate_section(image, module, section, j); - if (ret < 0) - return ret; - } - } - - return 0; -} - -int elf_find_section(const struct manifest_module *module, const char *name) -{ - const Elf32_Ehdr *hdr = &module->hdr; - const Elf32_Shdr *section, *s; - char *buffer; - size_t count; - int ret, i; - - section = &module->section[hdr->shstrndx]; - - /* alloc data data */ - buffer = calloc(1, section->size); - if (!buffer) - return -ENOMEM; - - /* read in section string data */ - ret = fseek(module->fd, section->off, SEEK_SET); - if (ret < 0) { - fprintf(stderr, "error: cant seek to string section %d\n", ret); - goto out; - } - - count = fread(buffer, 1, section->size, module->fd); - if (count != section->size) { - fprintf(stderr, "error: can't read string section %d\n", - -errno); - ret = -errno; - goto out; - } - - /* find section with name */ - for (i = 0; i < hdr->shnum; i++) { - s = &module->section[i]; - if (!strcmp(name, buffer + s->name)) { - ret = i; - goto out; - } - } - - fprintf(stderr, "warning: can't find section named '%s' in module %s\n", - name, module->elf_file); - ret = -EINVAL; - -out: - free(buffer); - return ret; -} - -int elf_read_section(const struct manifest_module *module, const char *section_name, - const Elf32_Shdr **dst_section, void **dst_buff) -{ - const Elf32_Shdr *section; - int section_index = -1; - int read; - - section_index = elf_find_section(module, section_name); - if (section_index < 0) { - fprintf(stderr, "error: section %s can't be found\n", - section_name); - return -EINVAL; - } - - section = &module->section[section_index]; - if (dst_section) - *dst_section = section; - - /* alloc buffer for section content */ - *dst_buff = calloc(1, section->size); - if (!*dst_buff) - return -ENOMEM; - - /* fill buffer with section content */ - fseek(module->fd, section->off, SEEK_SET); - read = fread(*dst_buff, 1, section->size, module->fd); - if (read != section->size) { - fprintf(stderr, - "error: can't read %s section %d\n", section_name, - -errno); - free(*dst_buff); - return -errno; - } - - return section->size; -} - -int elf_parse_module(struct image *image, int module_index, const char *name) -{ - struct manifest_module *module; - uint32_t rem; - int ret = 0; - - /* validate module index */ - if (module_index >= MAX_MODULES) { - fprintf(stderr, "error: too any modules\n"); - return -EINVAL; - } - - module = &image->module[module_index]; - - /* open the elf input file */ - module->fd = fopen(name, "rb"); - if (!module->fd) { - fprintf(stderr, "error: unable to open %s for reading %d\n", - name, errno); - return -EINVAL; - } - module->elf_file = name; - - /* get file size */ - ret = get_file_size(module->fd, name, &module->file_size); - if (ret < 0) - goto hdr_err; - - /* read in elf header */ - ret = elf_read_hdr(image, module); - if (ret < 0) - goto hdr_err; - - /* read in programs */ - ret = elf_read_programs(image, module); - if (ret < 0) { - fprintf(stderr, "error: failed to read program sections %d\n", - ret); - goto hdr_err; - } - - /* read sections */ - ret = elf_read_sections(image, module, module_index); - if (ret < 0) { - fprintf(stderr, "error: failed to read base sections %d\n", - ret); - goto sec_err; - } - - /* check limits */ - elf_module_limits(image, module); - - elf_find_section(module, ""); - - fprintf(stdout, " module: input size %zu (0x%zx) bytes %d sections\n", - module->output_size, module->output_size, module->num_sections); - fprintf(stdout, " module: text %d (0x%x) bytes\n" - " data %d (0x%x) bytes\n" - " bss %d (0x%x) bytes\n\n", - module->text_size, module->text_size, - module->data_size, module->data_size, - module->bss_size, module->bss_size); - - /* file sizes round up to nearest page */ - module->text_file_size = module->text_end - module->text_start; - rem = module->text_file_size % MAN_PAGE_SIZE; - if (rem) - module->text_file_size += MAN_PAGE_SIZE - rem; - - /* data section */ - module->data_file_size = module->data_end - module->data_start; - rem = module->data_file_size % MAN_PAGE_SIZE; - if (rem) - module->data_file_size += MAN_PAGE_SIZE - rem; - - /* bss section */ - module->bss_file_size = module->bss_end - module->bss_start; - rem = module->bss_file_size % MAN_PAGE_SIZE; - if (rem) - module->bss_file_size += MAN_PAGE_SIZE - rem; - - return 0; - -sec_err: - free(module->prg); -hdr_err: - fclose(module->fd); - - return ret; -} - -void elf_free_module(struct image *image, int module_index) -{ - struct manifest_module *module = &image->module[module_index]; - - free(module->prg); - free(module->section); - free(module->strings); - fclose(module->fd); -} diff --git a/src/include/rimage/rimage.h b/src/include/rimage/rimage.h index 2b9a26ef5b41..61bc77bfca42 100644 --- a/src/include/rimage/rimage.h +++ b/src/include/rimage/rimage.h @@ -172,14 +172,4 @@ int pkcs_v1_5_verify_man_ace_v1_5(struct image *image, int resign_image(struct image *image); int get_key_size(struct image *image); -int elf_parse_module(struct image *image, int module_index, const char *name); -void elf_free_module(struct image *image, int module_index); -int elf_is_rom(struct image *image, Elf32_Shdr *section); -int elf_validate_modules(struct image *image); -int elf_find_section(const struct manifest_module *module, const char *name); -int elf_read_section(const struct manifest_module *module, const char *name, - const Elf32_Shdr **dst_section, void **dst_buff); -int elf_validate_section(struct image *image, struct manifest_module *manifest_module, - Elf32_Shdr *section, int index); - #endif