From f721e3ac031f892af46f255a47d7f54a91317b30 Mon Sep 17 00:00:00 2001 From: The Android Open Source Project Date: Tue, 3 Mar 2009 18:28:35 -0800 Subject: auto import from //depot/cupcake/@135843 --- loader.c | 412 --------------------------------------------------------------- 1 file changed, 412 deletions(-) delete mode 100644 loader.c (limited to 'loader.c') diff --git a/loader.c b/loader.c deleted file mode 100644 index 84ed123..0000000 --- a/loader.c +++ /dev/null @@ -1,412 +0,0 @@ -/* - * QEMU Executable loader - * - * Copyright (c) 2006 Fabrice Bellard - * - * 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 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 "qemu-common.h" -#include "cpu.h" -#include "disas.h" -#include "sysemu.h" -#include "uboot_image.h" - -/* return the size or -1 if error */ -int get_image_size(const char *filename) -{ - int fd, size; - fd = open(filename, O_RDONLY | O_BINARY); - if (fd < 0) - return -1; - size = lseek(fd, 0, SEEK_END); - close(fd); - return size; -} - -/* return the size or -1 if error */ -/* deprecated, because caller does not specify buffer size! */ -int load_image(const char *filename, uint8_t *addr) -{ - int fd, size; - fd = open(filename, O_RDONLY | O_BINARY); - if (fd < 0) - return -1; - size = lseek(fd, 0, SEEK_END); - lseek(fd, 0, SEEK_SET); - if (read(fd, addr, size) != size) { - close(fd); - return -1; - } - close(fd); - return size; -} - -/* return the amount read, just like fread. 0 may mean error or eof */ -int fread_targphys(target_phys_addr_t dst_addr, size_t nbytes, FILE *f) -{ - uint8_t buf[4096]; - target_phys_addr_t dst_begin = dst_addr; - size_t want, did; - - while (nbytes) { - want = nbytes > sizeof(buf) ? sizeof(buf) : nbytes; - did = fread(buf, 1, want, f); - if (did != want) break; - - cpu_physical_memory_write_rom(dst_addr, buf, did); - dst_addr += did; - nbytes -= did; - } - return dst_addr - dst_begin; -} - -/* returns 0 on error, 1 if ok */ -int fread_targphys_ok(target_phys_addr_t dst_addr, size_t nbytes, FILE *f) -{ - return fread_targphys(dst_addr, nbytes, f) == nbytes; -} - -/* read()-like version */ -int read_targphys(int fd, target_phys_addr_t dst_addr, size_t nbytes) -{ - uint8_t buf[4096]; - target_phys_addr_t dst_begin = dst_addr; - size_t want, did; - - while (nbytes) { - want = nbytes > sizeof(buf) ? sizeof(buf) : nbytes; - did = read(fd, buf, want); - if (did != want) break; - - cpu_physical_memory_write_rom(dst_addr, buf, did); - dst_addr += did; - nbytes -= did; - } - return dst_addr - dst_begin; -} - -/* return the size or -1 if error */ -int load_image_targphys(const char *filename, - target_phys_addr_t addr, int max_sz) -{ - FILE *f; - size_t got; - - f = fopen(filename, "rb"); - if (!f) return -1; - - got = fread_targphys(addr, max_sz, f); - if (ferror(f)) { fclose(f); return -1; } - fclose(f); - - return got; -} - -void pstrcpy_targphys(target_phys_addr_t dest, int buf_size, - const char *source) -{ - static const uint8_t nul_byte = 0; - const char *nulp; - - if (buf_size <= 0) return; - nulp = memchr(source, 0, buf_size); - if (nulp) { - cpu_physical_memory_write_rom(dest, (uint8_t *)source, - (nulp - source) + 1); - } else { - cpu_physical_memory_write_rom(dest, (uint8_t *)source, buf_size - 1); - cpu_physical_memory_write_rom(dest, &nul_byte, 1); - } -} - -/* A.OUT loader */ - -struct exec -{ - uint32_t a_info; /* Use macros N_MAGIC, etc for access */ - uint32_t a_text; /* length of text, in bytes */ - uint32_t a_data; /* length of data, in bytes */ - uint32_t a_bss; /* length of uninitialized data area, in bytes */ - uint32_t a_syms; /* length of symbol table data in file, in bytes */ - uint32_t a_entry; /* start address */ - uint32_t a_trsize; /* length of relocation info for text, in bytes */ - uint32_t a_drsize; /* length of relocation info for data, in bytes */ -}; - -#ifdef BSWAP_NEEDED -static void bswap_ahdr(struct exec *e) -{ - bswap32s(&e->a_info); - bswap32s(&e->a_text); - bswap32s(&e->a_data); - bswap32s(&e->a_bss); - bswap32s(&e->a_syms); - bswap32s(&e->a_entry); - bswap32s(&e->a_trsize); - bswap32s(&e->a_drsize); -} -#else -#define bswap_ahdr(x) do { } while (0) -#endif - -#define N_MAGIC(exec) ((exec).a_info & 0xffff) -#define OMAGIC 0407 -#define NMAGIC 0410 -#define ZMAGIC 0413 -#define QMAGIC 0314 -#define _N_HDROFF(x) (1024 - sizeof (struct exec)) -#define N_TXTOFF(x) \ - (N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \ - (N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec))) -#define N_TXTADDR(x) (N_MAGIC(x) == QMAGIC ? TARGET_PAGE_SIZE : 0) -#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text) -#define _N_SEGMENT_ROUND(x) (((x) + TARGET_PAGE_SIZE - 1) & ~(TARGET_PAGE_SIZE - 1)) - -#define _N_TXTENDADDR(x) (N_TXTADDR(x)+(x).a_text) - -#define N_DATADDR(x) \ - (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x)) \ - : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x)))) - - -int load_aout(const char *filename, target_phys_addr_t addr, int max_sz) -{ - int fd, size, ret; - struct exec e; - uint32_t magic; - - fd = open(filename, O_RDONLY | O_BINARY); - if (fd < 0) - return -1; - - size = read(fd, &e, sizeof(e)); - if (size < 0) - goto fail; - - bswap_ahdr(&e); - - magic = N_MAGIC(e); - switch (magic) { - case ZMAGIC: - case QMAGIC: - case OMAGIC: - if (e.a_text + e.a_data > max_sz) - goto fail; - lseek(fd, N_TXTOFF(e), SEEK_SET); - size = read_targphys(fd, addr, e.a_text + e.a_data); - if (size < 0) - goto fail; - break; - case NMAGIC: - if (N_DATADDR(e) + e.a_data > max_sz) - goto fail; - lseek(fd, N_TXTOFF(e), SEEK_SET); - size = read_targphys(fd, addr, e.a_text); - if (size < 0) - goto fail; - ret = read_targphys(fd, addr + N_DATADDR(e), e.a_data); - if (ret < 0) - goto fail; - size += ret; - break; - default: - goto fail; - } - close(fd); - return size; - fail: - close(fd); - return -1; -} - -/* ELF loader */ - -static void *load_at(int fd, int offset, int size) -{ - void *ptr; - if (lseek(fd, offset, SEEK_SET) < 0) - return NULL; - ptr = qemu_malloc(size); - if (!ptr) - return NULL; - if (read(fd, ptr, size) != size) { - qemu_free(ptr); - return NULL; - } - return ptr; -} - - -#define ELF_CLASS ELFCLASS32 -#include "elf.h" - -#define SZ 32 -#define elf_word uint32_t -#define elf_sword int32_t -#define bswapSZs bswap32s -#include "elf_ops.h" - -#undef elfhdr -#undef elf_phdr -#undef elf_shdr -#undef elf_sym -#undef elf_note -#undef elf_word -#undef elf_sword -#undef bswapSZs -#undef SZ -#define elfhdr elf64_hdr -#define elf_phdr elf64_phdr -#define elf_note elf64_note -#define elf_shdr elf64_shdr -#define elf_sym elf64_sym -#define elf_word uint64_t -#define elf_sword int64_t -#define bswapSZs bswap64s -#define SZ 64 -#include "elf_ops.h" - -/* return < 0 if error, otherwise the number of bytes loaded in memory */ -int load_elf(const char *filename, int64_t virt_to_phys_addend, - uint64_t *pentry, uint64_t *lowaddr, uint64_t *highaddr) -{ - int fd, data_order, host_data_order, must_swab, ret; - uint8_t e_ident[EI_NIDENT]; - - fd = open(filename, O_RDONLY | O_BINARY); - if (fd < 0) { - perror(filename); - return -1; - } - if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident)) - goto fail; - if (e_ident[0] != ELFMAG0 || - e_ident[1] != ELFMAG1 || - e_ident[2] != ELFMAG2 || - e_ident[3] != ELFMAG3) - goto fail; -#ifdef WORDS_BIGENDIAN - data_order = ELFDATA2MSB; -#else - data_order = ELFDATA2LSB; -#endif - must_swab = data_order != e_ident[EI_DATA]; - -#ifdef TARGET_WORDS_BIGENDIAN - host_data_order = ELFDATA2MSB; -#else - host_data_order = ELFDATA2LSB; -#endif - if (host_data_order != e_ident[EI_DATA]) - return -1; - - lseek(fd, 0, SEEK_SET); - if (e_ident[EI_CLASS] == ELFCLASS64) { - ret = load_elf64(fd, virt_to_phys_addend, must_swab, pentry, - lowaddr, highaddr); - } else { - ret = load_elf32(fd, virt_to_phys_addend, must_swab, pentry, - lowaddr, highaddr); - } - - close(fd); - return ret; - - fail: - close(fd); - return -1; -} - -static void bswap_uboot_header(uboot_image_header_t *hdr) -{ -#ifndef WORDS_BIGENDIAN - bswap32s(&hdr->ih_magic); - bswap32s(&hdr->ih_hcrc); - bswap32s(&hdr->ih_time); - bswap32s(&hdr->ih_size); - bswap32s(&hdr->ih_load); - bswap32s(&hdr->ih_ep); - bswap32s(&hdr->ih_dcrc); -#endif -} - -/* Load a U-Boot image. */ -int load_uboot(const char *filename, target_ulong *ep, int *is_linux) -{ - - int fd; - int size; - uboot_image_header_t h; - uboot_image_header_t *hdr = &h; - uint8_t *data = NULL; - - fd = open(filename, O_RDONLY | O_BINARY); - if (fd < 0) - return -1; - - size = read(fd, hdr, sizeof(uboot_image_header_t)); - if (size < 0) - goto fail; - - bswap_uboot_header(hdr); - - if (hdr->ih_magic != IH_MAGIC) - goto fail; - - /* TODO: Implement Multi-File images. */ - if (hdr->ih_type == IH_TYPE_MULTI) { - fprintf(stderr, "Unable to load multi-file u-boot images\n"); - goto fail; - } - - /* TODO: Implement compressed images. */ - if (hdr->ih_comp != IH_COMP_NONE) { - fprintf(stderr, "Unable to load compressed u-boot images\n"); - goto fail; - } - - /* TODO: Check CPU type. */ - if (is_linux) { - if (hdr->ih_type == IH_TYPE_KERNEL && hdr->ih_os == IH_OS_LINUX) - *is_linux = 1; - else - *is_linux = 0; - } - - *ep = hdr->ih_ep; - data = qemu_malloc(hdr->ih_size); - if (!data) - goto fail; - - if (read(fd, data, hdr->ih_size) != hdr->ih_size) { - fprintf(stderr, "Error reading file\n"); - goto fail; - } - - cpu_physical_memory_write_rom(hdr->ih_load, data, hdr->ih_size); - - return hdr->ih_size; - -fail: - if (data) - qemu_free(data); - close(fd); - return -1; -} - -- cgit v1.1