Archipelago » qemu

obj-y += loader.o

obj-y = vl.o monitor.o pci.o isa_mmio.o machine.o \

#ifdef NEED_CPU_H

#endif

typedef const char *(*lookup_symbol_t)(struct syminfo *s, target_phys_addr_t orig_addr);

#include "loader.h"

#include "elf.h"

    target_phys_addr_t entry;

    kernel_size = load_elf(kernel_filename, 0, &elf_entry, NULL, NULL,

                           1, ELF_MACHINE, 0);

#include "loader.h"

#include "elf.h"

    target_phys_addr_t entry;

    int big_endian;

#ifdef TARGET_WORDS_BIGENDIAN

    big_endian = 1;

#else

    big_endian = 0;

#endif

    kernel_size = load_elf(info->kernel_filename, 0, &elf_entry, NULL, NULL,

                           big_endian, ELF_MACHINE, 1);

#include "loader.h"

#include "elf.h"

    int big_endian;

#ifdef TARGET_WORDS_BIGENDIAN

    big_endian = 1;

#else

    big_endian = 0;

#endif

    image_size = load_elf(kernel_filename, 0, &entry, &lowaddr, NULL,

                          big_endian, ELF_MACHINE, 1);

#include "loader.h"

#include "elf.h"

                               &entry, NULL, &high, 0, ELF_MACHINE, 0);

#include "loader.h"

#include "elf.h"

    target_phys_addr_t entry;

        kernel_size = load_elf(kernel_filename, 0, &elf_entry, NULL, NULL,

                               1, ELF_MACHINE, 0);

static void glue(bswap_ehdr, SZ)(struct elfhdr *ehdr)

{

    bswap16s(&ehdr->e_type);			/* Object file type */

    bswap16s(&ehdr->e_machine);		/* Architecture */

    bswap32s(&ehdr->e_version);		/* Object file version */

    bswapSZs(&ehdr->e_entry);		/* Entry point virtual address */

    bswapSZs(&ehdr->e_phoff);		/* Program header table file offset */

    bswapSZs(&ehdr->e_shoff);		/* Section header table file offset */

    bswap32s(&ehdr->e_flags);		/* Processor-specific flags */

    bswap16s(&ehdr->e_ehsize);		/* ELF header size in bytes */

    bswap16s(&ehdr->e_phentsize);		/* Program header table entry size */

    bswap16s(&ehdr->e_phnum);		/* Program header table entry count */

    bswap16s(&ehdr->e_shentsize);		/* Section header table entry size */

    bswap16s(&ehdr->e_shnum);		/* Section header table entry count */

    bswap16s(&ehdr->e_shstrndx);		/* Section header string table index */

}

static void glue(bswap_phdr, SZ)(struct elf_phdr *phdr)

{

    bswap32s(&phdr->p_type);			/* Segment type */

    bswapSZs(&phdr->p_offset);		/* Segment file offset */

    bswapSZs(&phdr->p_vaddr);		/* Segment virtual address */

    bswapSZs(&phdr->p_paddr);		/* Segment physical address */

    bswapSZs(&phdr->p_filesz);		/* Segment size in file */

    bswapSZs(&phdr->p_memsz);		/* Segment size in memory */

    bswap32s(&phdr->p_flags);		/* Segment flags */

    bswapSZs(&phdr->p_align);		/* Segment alignment */

}

static void glue(bswap_shdr, SZ)(struct elf_shdr *shdr)

{

    bswap32s(&shdr->sh_name);

    bswap32s(&shdr->sh_type);

    bswapSZs(&shdr->sh_flags);

    bswapSZs(&shdr->sh_addr);

    bswapSZs(&shdr->sh_offset);

    bswapSZs(&shdr->sh_size);

    bswap32s(&shdr->sh_link);

    bswap32s(&shdr->sh_info);

    bswapSZs(&shdr->sh_addralign);

    bswapSZs(&shdr->sh_entsize);

}

static void glue(bswap_sym, SZ)(struct elf_sym *sym)

{

    bswap32s(&sym->st_name);

    bswapSZs(&sym->st_value);

    bswapSZs(&sym->st_size);

    bswap16s(&sym->st_shndx);

}

static struct elf_shdr *glue(find_section, SZ)(struct elf_shdr *shdr_table,

                                               int n, int type)

{

    int i;

    for(i=0;i<n;i++) {

        if (shdr_table[i].sh_type == type)

            return shdr_table + i;

    }

    return NULL;

}

static int glue(symfind, SZ)(const void *s0, const void *s1)

{

    struct elf_sym *key = (struct elf_sym *)s0;

    struct elf_sym *sym = (struct elf_sym *)s1;

    int result = 0;

    if (key->st_value < sym->st_value) {

        result = -1;

    } else if (key->st_value >= sym->st_value + sym->st_size) {

        result = 1;

    }

    return result;

}

static const char *glue(lookup_symbol, SZ)(struct syminfo *s,

                                           target_phys_addr_t orig_addr)

{

    struct elf_sym *syms = glue(s->disas_symtab.elf, SZ);

    struct elf_sym key;

    struct elf_sym *sym;

    key.st_value = orig_addr;

    sym = bsearch(&key, syms, s->disas_num_syms, sizeof(*syms), glue(symfind, SZ));

    if (sym != NULL) {

        return s->disas_strtab + sym->st_name;

    }

    return "";

}

static int glue(symcmp, SZ)(const void *s0, const void *s1)

{

    struct elf_sym *sym0 = (struct elf_sym *)s0;

    struct elf_sym *sym1 = (struct elf_sym *)s1;

    return (sym0->st_value < sym1->st_value)

        ? -1

        : ((sym0->st_value > sym1->st_value) ? 1 : 0);

}

static int glue(load_symbols, SZ)(struct elfhdr *ehdr, int fd, int must_swab,

                                  int clear_lsb)

{

    struct elf_shdr *symtab, *strtab, *shdr_table = NULL;

    struct elf_sym *syms = NULL;

    struct syminfo *s;

    int nsyms, i;

    char *str = NULL;

    shdr_table = load_at(fd, ehdr->e_shoff,

                         sizeof(struct elf_shdr) * ehdr->e_shnum);

    if (!shdr_table)

        return -1;

    if (must_swab) {

        for (i = 0; i < ehdr->e_shnum; i++) {

            glue(bswap_shdr, SZ)(shdr_table + i);

        }

    }

    symtab = glue(find_section, SZ)(shdr_table, ehdr->e_shnum, SHT_SYMTAB);

    if (!symtab)

        goto fail;

    syms = load_at(fd, symtab->sh_offset, symtab->sh_size);

    if (!syms)

        goto fail;

    nsyms = symtab->sh_size / sizeof(struct elf_sym);

    i = 0;

    while (i < nsyms) {

        if (must_swab)

            glue(bswap_sym, SZ)(&syms[i]);

        /* We are only interested in function symbols.

           Throw everything else away.  */

        if (syms[i].st_shndx == SHN_UNDEF ||

                syms[i].st_shndx >= SHN_LORESERVE ||

                ELF_ST_TYPE(syms[i].st_info) != STT_FUNC) {

            nsyms--;

            if (i < nsyms) {

                syms[i] = syms[nsyms];

            }

            continue;

        }

        if (clear_lsb) {

            /* The bottom address bit marks a Thumb or MIPS16 symbol.  */

            syms[i].st_value &= ~(glue(glue(Elf, SZ), _Addr))1;

        }

        i++;

    }

    syms = qemu_realloc(syms, nsyms * sizeof(*syms));

    qsort(syms, nsyms, sizeof(*syms), glue(symcmp, SZ));

    /* String table */

    if (symtab->sh_link >= ehdr->e_shnum)

        goto fail;

    strtab = &shdr_table[symtab->sh_link];

    str = load_at(fd, strtab->sh_offset, strtab->sh_size);

    if (!str)

        goto fail;

    /* Commit */

    s = qemu_mallocz(sizeof(*s));

    s->lookup_symbol = glue(lookup_symbol, SZ);

    glue(s->disas_symtab.elf, SZ) = syms;

    s->disas_num_syms = nsyms;

    s->disas_strtab = str;

    s->next = syminfos;

    syminfos = s;

    qemu_free(shdr_table);

    return 0;

 fail:

    qemu_free(syms);

    qemu_free(str);

    qemu_free(shdr_table);

    return -1;

}

static int glue(load_elf, SZ)(int fd, int64_t address_offset,

                              int must_swab, uint64_t *pentry,

                              uint64_t *lowaddr, uint64_t *highaddr,

                              int elf_machine, int clear_lsb)

{

    struct elfhdr ehdr;

    struct elf_phdr *phdr = NULL, *ph;

    int size, i, total_size;

    elf_word mem_size;

    uint64_t addr, low = (uint64_t)-1, high = 0;

    uint8_t *data = NULL;

    if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr))

        goto fail;

    if (must_swab) {

        glue(bswap_ehdr, SZ)(&ehdr);

    }

    switch (elf_machine) {

        case EM_PPC64:

            if (EM_PPC64 != ehdr.e_machine)

                if (EM_PPC != ehdr.e_machine)

                    goto fail;

            break;

        case EM_X86_64:

            if (EM_X86_64 != ehdr.e_machine)

                if (EM_386 != ehdr.e_machine)

                    goto fail;

            break;

        default:

            if (elf_machine != ehdr.e_machine)

                goto fail;

    }

    if (pentry)

   	*pentry = (uint64_t)(elf_sword)ehdr.e_entry;

    glue(load_symbols, SZ)(&ehdr, fd, must_swab, clear_lsb);

    size = ehdr.e_phnum * sizeof(phdr[0]);

    lseek(fd, ehdr.e_phoff, SEEK_SET);

    phdr = qemu_mallocz(size);

    if (!phdr)

        goto fail;

    if (read(fd, phdr, size) != size)

        goto fail;

    if (must_swab) {

        for(i = 0; i < ehdr.e_phnum; i++) {

            ph = &phdr[i];

            glue(bswap_phdr, SZ)(ph);

        }

    }

    total_size = 0;

    for(i = 0; i < ehdr.e_phnum; i++) {

        ph = &phdr[i];

        if (ph->p_type == PT_LOAD) {

            mem_size = ph->p_memsz;

            /* XXX: avoid allocating */

            data = qemu_mallocz(mem_size);

            if (ph->p_filesz > 0) {

                if (lseek(fd, ph->p_offset, SEEK_SET) < 0)

                    goto fail;

                if (read(fd, data, ph->p_filesz) != ph->p_filesz)

                    goto fail;

            }

            /* address_offset is hack for kernel images that are

               linked at the wrong physical address.  */

            addr = ph->p_paddr + address_offset;

            cpu_physical_memory_write_rom(addr, data, mem_size);

            total_size += mem_size;

            if (addr < low)

                low = addr;

            if ((addr + mem_size) > high)

                high = addr + mem_size;

            qemu_free(data);

            data = NULL;

        }

    }

    qemu_free(phdr);

    if (lowaddr)

        *lowaddr = (uint64_t)(elf_sword)low;

    if (highaddr)

        *highaddr = (uint64_t)(elf_sword)high;

    return total_size;

 fail:

    qemu_free(data);

    qemu_free(phdr);

    return -1;

}

#include "loader.h"

#include "elf.h"

                               &entry, NULL, &high, 0, ELF_MACHINE, 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.

 *

 * Gunzip functionality in this file is derived from u-boot:

 *

 * (C) Copyright 2008 Semihalf

 *

 * (C) Copyright 2000-2005

 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License as

 * published by the Free Software Foundation; either version 2 of

 * the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License along

 * with this program; if not, see <http://www.gnu.org/licenses/>.

 */

#include "hw.h"

#include "disas.h"

#include "sysemu.h"

#include "uboot_image.h"

#include "loader.h"

#include <zlib.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);

	cpu_physical_memory_write_rom(dst_addr, buf, did);

	dst_addr += did;

	nbytes -= did;

	if (did != want)

	    break;

    }

    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 */

};

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);

}

#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, target_page_size) (N_MAGIC(x) == QMAGIC ? target_page_size : 0)

#define _N_SEGMENT_ROUND(x, target_page_size) (((x) + target_page_size - 1) & ~(target_page_size - 1))

#define _N_TXTENDADDR(x, target_page_size) (N_TXTADDR(x, target_page_size)+(x).a_text)

#define N_DATADDR(x, target_page_size) \

    (N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x, target_page_size)) \

     : (_N_SEGMENT_ROUND (_N_TXTENDADDR(x, target_page_size), target_page_size)))

int load_aout(const char *filename, target_phys_addr_t addr, int max_sz,

              int bswap_needed, target_phys_addr_t target_page_size)

{

    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;

    if (bswap_needed) {

        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, target_page_size) + 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, target_page_size),

                            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 (read(fd, ptr, size) != size) {

        qemu_free(ptr);

        return NULL;

    }

    return ptr;

}

#ifdef ELF_CLASS

#undef ELF_CLASS

#endif

#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 address_offset,

             uint64_t *pentry, uint64_t *lowaddr, uint64_t *highaddr,

             int big_endian, int elf_machine, int clear_lsb)

{

    int fd, data_order, target_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 HOST_WORDS_BIGENDIAN

    data_order = ELFDATA2MSB;

#else

    data_order = ELFDATA2LSB;

#endif

    must_swab = data_order != e_ident[EI_DATA];

    if (big_endian) {

        target_data_order = ELFDATA2MSB;

    } else {

        target_data_order = ELFDATA2LSB;

    }

    if (target_data_order != e_ident[EI_DATA])

        return -1;

    lseek(fd, 0, SEEK_SET);

    if (e_ident[EI_CLASS] == ELFCLASS64) {

        ret = load_elf64(fd, address_offset, must_swab, pentry,

                         lowaddr, highaddr, elf_machine, clear_lsb);

    } else {

        ret = load_elf32(fd, address_offset, must_swab, pentry,

                         lowaddr, highaddr, elf_machine, clear_lsb);

    }

    close(fd);

    return ret;

 fail:

    close(fd);

    return -1;

}

static void bswap_uboot_header(uboot_image_header_t *hdr)

{

#ifndef HOST_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

}

#define ZALLOC_ALIGNMENT	16

static void *zalloc(void *x, unsigned items, unsigned size)

{

    void *p;

    size *= items;

    size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);

    p = qemu_malloc(size);

    return (p);

}

static void zfree(void *x, void *addr)

{

    qemu_free(addr);

}

#define HEAD_CRC	2

#define EXTRA_FIELD	4

#define ORIG_NAME	8

#define COMMENT		0x10

#define RESERVED	0xe0

#define DEFLATED	8

/* This is the maximum in uboot, so if a uImage overflows this, it would

 * overflow on real hardware too. */

#define UBOOT_MAX_GUNZIP_BYTES 0x800000

static ssize_t gunzip(void *dst, size_t dstlen, uint8_t *src,

                      size_t srclen)

{

    z_stream s;

    ssize_t dstbytes;

    int r, i, flags;

    /* skip header */

    i = 10;

    flags = src[3];

    if (src[2] != DEFLATED || (flags & RESERVED) != 0) {

        puts ("Error: Bad gzipped data\n");

        return -1;

    }

    if ((flags & EXTRA_FIELD) != 0)

        i = 12 + src[10] + (src[11] << 8);

    if ((flags & ORIG_NAME) != 0)

        while (src[i++] != 0)

            ;

    if ((flags & COMMENT) != 0)

        while (src[i++] != 0)

            ;

    if ((flags & HEAD_CRC) != 0)

        i += 2;

    if (i >= srclen) {

        puts ("Error: gunzip out of data in header\n");

        return -1;

    }

    s.zalloc = zalloc;

    s.zfree = zfree;

    r = inflateInit2(&s, -MAX_WBITS);

    if (r != Z_OK) {

        printf ("Error: inflateInit2() returned %d\n", r);

        return (-1);

    }

    s.next_in = src + i;

    s.avail_in = srclen - i;

    s.next_out = dst;

    s.avail_out = dstlen;

    r = inflate(&s, Z_FINISH);

    if (r != Z_OK && r != Z_STREAM_END) {

        printf ("Error: inflate() returned %d\n", r);

        return -1;

    }

    dstbytes = s.next_out - (unsigned char *) dst;

    inflateEnd(&s);

    return dstbytes;

}

/* Load a U-Boot image.  */

int load_uimage(const char *filename, target_phys_addr_t *ep,

                target_phys_addr_t *loadaddr, int *is_linux)

{

    int fd;

    int size;

    uboot_image_header_t h;

    uboot_image_header_t *hdr = &h;

    uint8_t *data = NULL;

    int ret = -1;

    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 out;

    bswap_uboot_header(hdr);

    if (hdr->ih_magic != IH_MAGIC)

        goto out;

    /* TODO: Implement other image types.  */

    if (hdr->ih_type != IH_TYPE_KERNEL) {

        fprintf(stderr, "Can only load u-boot image type \"kernel\"\n");

        goto out;

    }

    switch (hdr->ih_comp) {

    case IH_COMP_NONE:

    case IH_COMP_GZIP:

        break;

    default:

        fprintf(stderr,

                "Unable to load u-boot images with compression type %d\n",

                hdr->ih_comp);

        goto out;

    }

    /* TODO: Check CPU type.  */

    if (is_linux) {

        if (hdr->ih_os == IH_OS_LINUX)

            *is_linux = 1;

        else

            *is_linux = 0;

    }

    *ep = hdr->ih_ep;

    data = qemu_malloc(hdr->ih_size);

    if (read(fd, data, hdr->ih_size) != hdr->ih_size) {

        fprintf(stderr, "Error reading file\n");

        goto out;

    }

    if (hdr->ih_comp == IH_COMP_GZIP) {

        uint8_t *compressed_data;

        size_t max_bytes;

        ssize_t bytes;

        compressed_data = data;

        max_bytes = UBOOT_MAX_GUNZIP_BYTES;

        data = qemu_malloc(max_bytes);

        bytes = gunzip(data, max_bytes, compressed_data, hdr->ih_size);

        qemu_free(compressed_data);

        if (bytes < 0) {

            fprintf(stderr, "Unable to decompress gzipped image!\n");

            goto out;

        }

        hdr->ih_size = bytes;

    }

    cpu_physical_memory_write_rom(hdr->ih_load, data, hdr->ih_size);

    if (loadaddr)

        *loadaddr = hdr->ih_load;

    ret = hdr->ih_size;

out:

    if (data)

        qemu_free(data);

    close(fd);

    return ret;

}

#ifndef LOADER_H

#define LOADER_H

/* loader.c */

int get_image_size(const char *filename);

int load_image(const char *filename, uint8_t *addr); /* deprecated */

int load_image_targphys(const char *filename, target_phys_addr_t, int max_sz);

int load_elf(const char *filename, int64_t address_offset,

             uint64_t *pentry, uint64_t *lowaddr, uint64_t *highaddr,

             int big_endian, int elf_machine, int clear_lsb);

int load_aout(const char *filename, target_phys_addr_t addr, int max_sz,

              int bswap_needed, target_phys_addr_t target_page_size);

int load_uimage(const char *filename, target_phys_addr_t *ep,

                target_phys_addr_t *loadaddr, int *is_linux);

int fread_targphys(target_phys_addr_t dst_addr, size_t nbytes, FILE *f);

int fread_targphys_ok(target_phys_addr_t dst_addr, size_t nbytes, FILE *f);

int read_targphys(int fd, target_phys_addr_t dst_addr, size_t nbytes);

void pstrcpy_targphys(target_phys_addr_t dest, int buf_size,

                      const char *source);

#endif

#include "loader.h"

#include "elf.h"

    target_phys_addr_t entry;

    kernel_size = load_elf(kernel_filename, 0, &elf_entry, NULL, NULL,

                           1, ELF_MACHINE, 0);

#include "loader.h"

#include "loader.h"

#include "elf.h"

    int big_endian;

#ifdef TARGET_WORDS_BIGENDIAN

    big_endian = 1;

#else

    big_endian = 0;

#endif

                 (uint64_t *)&kernel_high, big_endian, ELF_MACHINE, 1) < 0) {

#include "loader.h"

#include "elf.h"

    int big_endian;

#ifdef TARGET_WORDS_BIGENDIAN

    big_endian = 1;

#else

    big_endian = 0;

#endif

                           (uint64_t *)&kernel_high, big_endian, ELF_MACHINE, 1);