[qemu.git] / hw / loader.c

/*
 * 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 "monitor.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;
}

/* read()-like version */
int read_targphys(const char *name,
                  int fd, target_phys_addr_t dst_addr, size_t nbytes)
{
    uint8_t *buf;
    size_t did;

    buf = qemu_malloc(nbytes);
    did = read(fd, buf, nbytes);
    if (did > 0)
        rom_add_blob_fixed("read", buf, did, dst_addr);
    qemu_free(buf);
    return did;
}

/* return the size or -1 if error */
int load_image_targphys(const char *filename,
			target_phys_addr_t addr, int max_sz)
{
    int size;

    size = get_image_size(filename);
    if (size > 0)
        rom_add_file_fixed(filename, addr);
    return size;
}

void pstrcpy_targphys(const char *name, target_phys_addr_t dest, int buf_size,
                      const char *source)
{
    const char *nulp;
    char *ptr;

    if (buf_size <= 0) return;
    nulp = memchr(source, 0, buf_size);
    if (nulp) {
        rom_add_blob_fixed(name, source, (nulp - source) + 1, dest);
    } else {
        rom_add_blob_fixed(name, source, buf_size, dest);
        ptr = rom_ptr(dest + buf_size - 1);
        *ptr = 0;
    }
}

/* 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(filename, 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(filename, fd, addr, e.a_text);
	if (size < 0)
	    goto fail;
        ret = read_targphys(filename, 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(filename, fd, address_offset, must_swab, pentry,
                         lowaddr, highaddr, elf_machine, clear_lsb);
    } else {
        ret = load_elf32(filename, 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;
    }

    rom_add_blob_fixed(filename, data, hdr->ih_size, hdr->ih_load);

    if (loadaddr)
        *loadaddr = hdr->ih_load;

    ret = hdr->ih_size;

out:
    if (data)
        qemu_free(data);
    close(fd);
    return ret;
}

/*
 * Functions for reboot-persistent memory regions.
 *  - used for vga bios and option roms.
 *  - also linux kernel (-kernel / -initrd).
 */

typedef struct Rom Rom;

struct Rom {
    char *name;
    char *path;
    size_t romsize;
    uint8_t *data;
    int align;
    int isrom;

    target_phys_addr_t min;
    target_phys_addr_t max;
    target_phys_addr_t addr;
    QTAILQ_ENTRY(Rom) next;
};

static QTAILQ_HEAD(, Rom) roms = QTAILQ_HEAD_INITIALIZER(roms);
int rom_enable_driver_roms;

static void rom_insert(Rom *rom)
{
    Rom *item;

    /* list is ordered by load address */
    QTAILQ_FOREACH(item, &roms, next) {
        if (rom->min >= item->min)
            continue;
        QTAILQ_INSERT_BEFORE(item, rom, next);
        return;
    }
    QTAILQ_INSERT_TAIL(&roms, rom, next);
}

int rom_add_file(const char *file,
                 target_phys_addr_t min, target_phys_addr_t max, int align)
{
    Rom *rom;
    int rc, fd = -1;

    rom = qemu_mallocz(sizeof(*rom));
    rom->name = qemu_strdup(file);
    rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name);
    if (rom->path == NULL) {
        rom->path = qemu_strdup(file);
    }

    fd = open(rom->path, O_RDONLY | O_BINARY);
    if (fd == -1) {
        fprintf(stderr, "Could not open option rom '%s': %s\n",
                rom->path, strerror(errno));
        goto err;
    }

    rom->align   = align;
    rom->min     = min;
    rom->max     = max;
    rom->romsize = lseek(fd, 0, SEEK_END);
    rom->data    = qemu_mallocz(rom->romsize);
    lseek(fd, 0, SEEK_SET);
    rc = read(fd, rom->data, rom->romsize);
    if (rc != rom->romsize) {
        fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
                rom->name, rc, rom->romsize);
        goto err;
    }
    close(fd);
    rom_insert(rom);
    return 0;

err:
    if (fd != -1)
        close(fd);
    qemu_free(rom->data);
    qemu_free(rom->path);
    qemu_free(rom->name);
    qemu_free(rom);
    return -1;
}

int rom_add_blob(const char *name, const void *blob, size_t len,
                 target_phys_addr_t min, target_phys_addr_t max, int align)
{
    Rom *rom;

    rom = qemu_mallocz(sizeof(*rom));
    rom->name    = qemu_strdup(name);
    rom->align   = align;
    rom->min     = min;
    rom->max     = max;
    rom->romsize = len;
    rom->data    = qemu_mallocz(rom->romsize);
    memcpy(rom->data, blob, len);
    rom_insert(rom);
    return 0;
}

int rom_add_vga(const char *file)
{
    if (!rom_enable_driver_roms)
        return 0;
    return rom_add_file(file, PC_ROM_MIN_VGA, PC_ROM_MAX, PC_ROM_ALIGN);
}

int rom_add_option(const char *file)
{
    if (!rom_enable_driver_roms)
        return 0;
    return rom_add_file(file, PC_ROM_MIN_OPTION, PC_ROM_MAX, PC_ROM_ALIGN);
}

static void rom_reset(void *unused)
{
    Rom *rom;

    QTAILQ_FOREACH(rom, &roms, next) {
        if (rom->data == NULL)
            continue;
        cpu_physical_memory_write_rom(rom->addr, rom->data, rom->romsize);
        if (rom->isrom) {
            /* rom needs to be written only once */
            qemu_free(rom->data);
            rom->data = NULL;
        }
    }
}

int rom_load_all(void)
{
    target_phys_addr_t addr = 0;
    int memtype;
    Rom *rom;

    QTAILQ_FOREACH(rom, &roms, next) {
        if (addr < rom->min)
            addr = rom->min;
        if (rom->max) {
            /* load address range */
            if (rom->align) {
                addr += (rom->align-1);
                addr &= ~(rom->align-1);
            }
            if (addr + rom->romsize > rom->max) {
                fprintf(stderr, "rom: out of memory (rom %s, "
                        "addr 0x" TARGET_FMT_plx
                        ", size 0x%zx, max 0x" TARGET_FMT_plx ")\n",
                        rom->name, addr, rom->romsize, rom->max);
                return -1;
            }
        } else {
            /* fixed address requested */
            if (addr != rom->min) {
                fprintf(stderr, "rom: requested regions overlap "
                        "(rom %s. free=0x" TARGET_FMT_plx
                        ", addr=0x" TARGET_FMT_plx ")\n",
                        rom->name, addr, rom->min);
                return -1;
            }
        }
        rom->addr = addr;
        addr += rom->romsize;
        memtype = cpu_get_physical_page_desc(rom->addr) & (3 << IO_MEM_SHIFT);
        if (memtype == IO_MEM_ROM)
            rom->isrom = 1;
    }
    qemu_register_reset(rom_reset, NULL);
    return 0;
}

static Rom *find_rom(target_phys_addr_t addr)
{
    Rom *rom;

    QTAILQ_FOREACH(rom, &roms, next) {
        if (rom->max)
            continue;
        if (rom->min > addr)
            continue;
        if (rom->min + rom->romsize < addr)
            continue;
        return rom;
    }
    return NULL;
}

void *rom_ptr(target_phys_addr_t addr)
{
    Rom *rom;

    rom = find_rom(addr);
    if (!rom || !rom->data)
        return NULL;
    return rom->data + (addr - rom->min);
}

void do_info_roms(Monitor *mon)
{
    Rom *rom;

    QTAILQ_FOREACH(rom, &roms, next) {
        monitor_printf(mon, "addr=" TARGET_FMT_plx
                       " size=0x%06zx mem=%s name=\"%s\" \n",
                       rom->addr, rom->romsize,
                       rom->isrom ? "rom" : "ram",
                       rom->name);
    }
}
Commit	Line	Data
5fe141fd FB	1	/*
5fe141fd FB	2	* QEMU Executable loader
5fafdf24	3	*
5fe141fd	4	* Copyright (c) 2006 Fabrice Bellard
5fafdf24	5	*
5fe141fd FB	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
5a123577 AL	23	*
	24	* Gunzip functionality in this file is derived from u-boot:
	25	*
	26	* (C) Copyright 2008 Semihalf
	27	*
	28	* (C) Copyright 2000-2005
	29	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	30	*
	31	* This program is free software; you can redistribute it and/or
	32	* modify it under the terms of the GNU General Public License as
	33	* published by the Free Software Foundation; either version 2 of
	34	* the License, or (at your option) any later version.
	35	*
	36	* This program is distributed in the hope that it will be useful,
	37	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	38	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	39	* GNU General Public License for more details.
	40	*
fad6cb1a	41	* You should have received a copy of the GNU General Public License along
8167ee88	42	* with this program; if not, see <http://www.gnu.org/licenses/>.
5fe141fd	43	*/
5a123577	44
ca20cf32	45	#include "hw.h"
5fe141fd	46	#include "disas.h"
45a50b16	47	#include "monitor.h"
9596ebb7	48	#include "sysemu.h"
1c7b3754	49	#include "uboot_image.h"
ca20cf32	50	#include "loader.h"
5fe141fd	51
5a123577 AL	52	#include <zlib.h>
5a123577 AL	53
5fe141fd FB	54	/* return the size or -1 if error */
	55	int get_image_size(const char *filename)
	56	{
	57	int fd, size;
	58	fd = open(filename, O_RDONLY \| O_BINARY);
	59	if (fd < 0)
	60	return -1;
	61	size = lseek(fd, 0, SEEK_END);
	62	close(fd);
	63	return size;
	64	}
	65
	66	/* return the size or -1 if error */
293f78bc	67	/* deprecated, because caller does not specify buffer size! */
5fe141fd FB	68	int load_image(const char filename, uint8_t addr)
	69	{
	70	int fd, size;
	71	fd = open(filename, O_RDONLY \| O_BINARY);
	72	if (fd < 0)
	73	return -1;
	74	size = lseek(fd, 0, SEEK_END);
	75	lseek(fd, 0, SEEK_SET);
	76	if (read(fd, addr, size) != size) {
	77	close(fd);
	78	return -1;
	79	}
	80	close(fd);
	81	return size;
	82	}
	83
293f78bc	84	/* read()-like version */
45a50b16 GH	85	int read_targphys(const char *name,
45a50b16 GH	86	int fd, target_phys_addr_t dst_addr, size_t nbytes)
293f78bc	87	{
45a50b16 GH	88	uint8_t *buf;
	89	size_t did;
	90
	91	buf = qemu_malloc(nbytes);
	92	did = read(fd, buf, nbytes);
	93	if (did > 0)
	94	rom_add_blob_fixed("read", buf, did, dst_addr);
	95	qemu_free(buf);
	96	return did;
293f78bc BS	97	}
	98
	99	/* return the size or -1 if error */
	100	int load_image_targphys(const char *filename,
c227f099	101	target_phys_addr_t addr, int max_sz)
293f78bc	102	{
45a50b16	103	int size;
293f78bc	104
45a50b16 GH	105	size = get_image_size(filename);
	106	if (size > 0)
	107	rom_add_file_fixed(filename, addr);
	108	return size;
293f78bc BS	109	}
293f78bc BS	110
3c178e72	111	void pstrcpy_targphys(const char *name, target_phys_addr_t dest, int buf_size,
293f78bc BS	112	const char *source)
293f78bc BS	113	{
293f78bc	114	const char *nulp;
3c178e72	115	char *ptr;
293f78bc BS	116
	117	if (buf_size <= 0) return;
	118	nulp = memchr(source, 0, buf_size);
	119	if (nulp) {
3c178e72	120	rom_add_blob_fixed(name, source, (nulp - source) + 1, dest);
293f78bc	121	} else {
3c178e72 GH	122	rom_add_blob_fixed(name, source, buf_size, dest);
	123	ptr = rom_ptr(dest + buf_size - 1);
	124	*ptr = 0;
293f78bc BS	125	}
	126	}
	127
5fe141fd FB	128	/* A.OUT loader */
	129
	130	struct exec
	131	{
	132	uint32_t a_info; /* Use macros N_MAGIC, etc for access */
	133	uint32_t a_text; /* length of text, in bytes */
	134	uint32_t a_data; /* length of data, in bytes */
	135	uint32_t a_bss; /* length of uninitialized data area, in bytes */
	136	uint32_t a_syms; /* length of symbol table data in file, in bytes */
	137	uint32_t a_entry; /* start address */
	138	uint32_t a_trsize; /* length of relocation info for text, in bytes */
	139	uint32_t a_drsize; /* length of relocation info for data, in bytes */
	140	};
	141
5fe141fd FB	142	static void bswap_ahdr(struct exec *e)
	143	{
	144	bswap32s(&e->a_info);
	145	bswap32s(&e->a_text);
	146	bswap32s(&e->a_data);
	147	bswap32s(&e->a_bss);
	148	bswap32s(&e->a_syms);
	149	bswap32s(&e->a_entry);
	150	bswap32s(&e->a_trsize);
	151	bswap32s(&e->a_drsize);
	152	}
5fe141fd FB	153
	154	#define N_MAGIC(exec) ((exec).a_info & 0xffff)
	155	#define OMAGIC 0407
	156	#define NMAGIC 0410
	157	#define ZMAGIC 0413
	158	#define QMAGIC 0314
	159	#define _N_HDROFF(x) (1024 - sizeof (struct exec))
	160	#define N_TXTOFF(x) \
	161	(N_MAGIC(x) == ZMAGIC ? _N_HDROFF((x)) + sizeof (struct exec) : \
	162	(N_MAGIC(x) == QMAGIC ? 0 : sizeof (struct exec)))
ca20cf32 BS	163	#define N_TXTADDR(x, target_page_size) (N_MAGIC(x) == QMAGIC ? target_page_size : 0)
ca20cf32 BS	164	#define _N_SEGMENT_ROUND(x, target_page_size) (((x) + target_page_size - 1) & ~(target_page_size - 1))
5fe141fd	165
ca20cf32	166	#define _N_TXTENDADDR(x, target_page_size) (N_TXTADDR(x, target_page_size)+(x).a_text)
5fe141fd	167
ca20cf32 BS	168	#define N_DATADDR(x, target_page_size) \
	169	(N_MAGIC(x)==OMAGIC? (_N_TXTENDADDR(x, target_page_size)) \
	170	: (_N_SEGMENT_ROUND (_N_TXTENDADDR(x, target_page_size), target_page_size)))
5fe141fd FB	171
5fe141fd FB	172
c227f099 AL	173	int load_aout(const char *filename, target_phys_addr_t addr, int max_sz,
c227f099 AL	174	int bswap_needed, target_phys_addr_t target_page_size)
5fe141fd FB	175	{
	176	int fd, size, ret;
	177	struct exec e;
	178	uint32_t magic;
	179
	180	fd = open(filename, O_RDONLY \| O_BINARY);
	181	if (fd < 0)
	182	return -1;
	183
	184	size = read(fd, &e, sizeof(e));
	185	if (size < 0)
	186	goto fail;
	187
ca20cf32 BS	188	if (bswap_needed) {
	189	bswap_ahdr(&e);
	190	}
5fe141fd FB	191
	192	magic = N_MAGIC(e);
	193	switch (magic) {
	194	case ZMAGIC:
	195	case QMAGIC:
	196	case OMAGIC:
293f78bc BS	197	if (e.a_text + e.a_data > max_sz)
293f78bc BS	198	goto fail;
5fe141fd	199	lseek(fd, N_TXTOFF(e), SEEK_SET);
45a50b16	200	size = read_targphys(filename, fd, addr, e.a_text + e.a_data);
5fe141fd FB	201	if (size < 0)
	202	goto fail;
	203	break;
	204	case NMAGIC:
ca20cf32	205	if (N_DATADDR(e, target_page_size) + e.a_data > max_sz)
293f78bc	206	goto fail;
5fe141fd	207	lseek(fd, N_TXTOFF(e), SEEK_SET);
45a50b16	208	size = read_targphys(filename, fd, addr, e.a_text);
5fe141fd FB	209	if (size < 0)
5fe141fd FB	210	goto fail;
45a50b16	211	ret = read_targphys(filename, fd, addr + N_DATADDR(e, target_page_size),
ca20cf32	212	e.a_data);
5fe141fd FB	213	if (ret < 0)
	214	goto fail;
	215	size += ret;
	216	break;
	217	default:
	218	goto fail;
	219	}
	220	close(fd);
	221	return size;
	222	fail:
	223	close(fd);
	224	return -1;
	225	}
	226
	227	/* ELF loader */
	228
	229	static void *load_at(int fd, int offset, int size)
	230	{
	231	void *ptr;
	232	if (lseek(fd, offset, SEEK_SET) < 0)
	233	return NULL;
	234	ptr = qemu_malloc(size);
5fe141fd FB	235	if (read(fd, ptr, size) != size) {
	236	qemu_free(ptr);
	237	return NULL;
	238	}
	239	return ptr;
	240	}
	241
3efa9a67	242	#ifdef ELF_CLASS
	243	#undef ELF_CLASS
	244	#endif
5fe141fd FB	245
	246	#define ELF_CLASS ELFCLASS32
	247	#include "elf.h"
	248
	249	#define SZ 32
	250	#define elf_word uint32_t
82790064	251	#define elf_sword int32_t
5fe141fd FB	252	#define bswapSZs bswap32s
	253	#include "elf_ops.h"
	254
	255	#undef elfhdr
	256	#undef elf_phdr
	257	#undef elf_shdr
	258	#undef elf_sym
	259	#undef elf_note
	260	#undef elf_word
82790064	261	#undef elf_sword
5fe141fd FB	262	#undef bswapSZs
	263	#undef SZ
	264	#define elfhdr elf64_hdr
	265	#define elf_phdr elf64_phdr
	266	#define elf_note elf64_note
	267	#define elf_shdr elf64_shdr
	268	#define elf_sym elf64_sym
	269	#define elf_word uint64_t
82790064	270	#define elf_sword int64_t
5fe141fd FB	271	#define bswapSZs bswap64s
	272	#define SZ 64
	273	#include "elf_ops.h"
	274
	275	/* return < 0 if error, otherwise the number of bytes loaded in memory */
83c1f87c	276	int load_elf(const char *filename, int64_t address_offset,
ca20cf32 BS	277	uint64_t pentry, uint64_t lowaddr, uint64_t *highaddr,
ca20cf32 BS	278	int big_endian, int elf_machine, int clear_lsb)
5fe141fd	279	{
ca20cf32	280	int fd, data_order, target_data_order, must_swab, ret;
5fe141fd FB	281	uint8_t e_ident[EI_NIDENT];
5fe141fd FB	282
699e4642	283	fd = open(filename, O_RDONLY \| O_BINARY);
5fe141fd FB	284	if (fd < 0) {
	285	perror(filename);
	286	return -1;
	287	}
	288	if (read(fd, e_ident, sizeof(e_ident)) != sizeof(e_ident))
	289	goto fail;
	290	if (e_ident[0] != ELFMAG0 \|\|
	291	e_ident[1] != ELFMAG1 \|\|
	292	e_ident[2] != ELFMAG2 \|\|
	293	e_ident[3] != ELFMAG3)
	294	goto fail;
e2542fe2	295	#ifdef HOST_WORDS_BIGENDIAN
5fe141fd FB	296	data_order = ELFDATA2MSB;
	297	#else
	298	data_order = ELFDATA2LSB;
	299	#endif
	300	must_swab = data_order != e_ident[EI_DATA];
ca20cf32 BS	301	if (big_endian) {
	302	target_data_order = ELFDATA2MSB;
	303	} else {
	304	target_data_order = ELFDATA2LSB;
	305	}
9042c0e2	306
ca20cf32	307	if (target_data_order != e_ident[EI_DATA])
9042c0e2 TS	308	return -1;
9042c0e2 TS	309
5fe141fd FB	310	lseek(fd, 0, SEEK_SET);
5fe141fd FB	311	if (e_ident[EI_CLASS] == ELFCLASS64) {
45a50b16	312	ret = load_elf64(filename, fd, address_offset, must_swab, pentry,
ca20cf32	313	lowaddr, highaddr, elf_machine, clear_lsb);
5fe141fd	314	} else {
45a50b16	315	ret = load_elf32(filename, fd, address_offset, must_swab, pentry,
ca20cf32	316	lowaddr, highaddr, elf_machine, clear_lsb);
5fe141fd FB	317	}
	318
	319	close(fd);
	320	return ret;
	321
	322	fail:
	323	close(fd);
	324	return -1;
	325	}
1c7b3754	326
c227f099	327	static void bswap_uboot_header(uboot_image_header_t *hdr)
1c7b3754	328	{
e2542fe2	329	#ifndef HOST_WORDS_BIGENDIAN
1c7b3754 PB	330	bswap32s(&hdr->ih_magic);
	331	bswap32s(&hdr->ih_hcrc);
	332	bswap32s(&hdr->ih_time);
	333	bswap32s(&hdr->ih_size);
	334	bswap32s(&hdr->ih_load);
	335	bswap32s(&hdr->ih_ep);
	336	bswap32s(&hdr->ih_dcrc);
	337	#endif
	338	}
	339
5a123577 AL	340
	341	#define ZALLOC_ALIGNMENT 16
	342
	343	static void zalloc(void x, unsigned items, unsigned size)
	344	{
	345	void *p;
	346
	347	size *= items;
	348	size = (size + ZALLOC_ALIGNMENT - 1) & ~(ZALLOC_ALIGNMENT - 1);
	349
	350	p = qemu_malloc(size);
	351
	352	return (p);
	353	}
	354
d084eab6	355	static void zfree(void x, void addr)
5a123577 AL	356	{
	357	qemu_free(addr);
	358	}
	359
	360
	361	#define HEAD_CRC 2
	362	#define EXTRA_FIELD 4
	363	#define ORIG_NAME 8
	364	#define COMMENT 0x10
	365	#define RESERVED 0xe0
	366
	367	#define DEFLATED 8
	368
	369	/* This is the maximum in uboot, so if a uImage overflows this, it would
	370	* overflow on real hardware too. */
	371	#define UBOOT_MAX_GUNZIP_BYTES 0x800000
	372
	373	static ssize_t gunzip(void dst, size_t dstlen, uint8_t src,
	374	size_t srclen)
	375	{
	376	z_stream s;
	377	ssize_t dstbytes;
	378	int r, i, flags;
	379
	380	/* skip header */
	381	i = 10;
	382	flags = src[3];
	383	if (src[2] != DEFLATED \|\| (flags & RESERVED) != 0) {
	384	puts ("Error: Bad gzipped data\n");
	385	return -1;
	386	}
	387	if ((flags & EXTRA_FIELD) != 0)
	388	i = 12 + src[10] + (src[11] << 8);
	389	if ((flags & ORIG_NAME) != 0)
	390	while (src[i++] != 0)
	391	;
	392	if ((flags & COMMENT) != 0)
	393	while (src[i++] != 0)
	394	;
	395	if ((flags & HEAD_CRC) != 0)
	396	i += 2;
	397	if (i >= srclen) {
	398	puts ("Error: gunzip out of data in header\n");
	399	return -1;
	400	}
	401
	402	s.zalloc = zalloc;
d084eab6	403	s.zfree = zfree;
5a123577 AL	404
	405	r = inflateInit2(&s, -MAX_WBITS);
	406	if (r != Z_OK) {
	407	printf ("Error: inflateInit2() returned %d\n", r);
	408	return (-1);
	409	}
	410	s.next_in = src + i;
	411	s.avail_in = srclen - i;
	412	s.next_out = dst;
	413	s.avail_out = dstlen;
	414	r = inflate(&s, Z_FINISH);
	415	if (r != Z_OK && r != Z_STREAM_END) {
	416	printf ("Error: inflate() returned %d\n", r);
	417	return -1;
	418	}
	419	dstbytes = s.next_out - (unsigned char *) dst;
	420	inflateEnd(&s);
	421
	422	return dstbytes;
	423	}
	424
1c7b3754	425	/* Load a U-Boot image. */
c227f099 AL	426	int load_uimage(const char filename, target_phys_addr_t ep,
c227f099 AL	427	target_phys_addr_t loadaddr, int is_linux)
1c7b3754	428	{
1c7b3754 PB	429	int fd;
1c7b3754 PB	430	int size;
c227f099 AL	431	uboot_image_header_t h;
c227f099 AL	432	uboot_image_header_t *hdr = &h;
1c7b3754	433	uint8_t *data = NULL;
265ca29a	434	int ret = -1;
1c7b3754 PB	435
	436	fd = open(filename, O_RDONLY \| O_BINARY);
	437	if (fd < 0)
	438	return -1;
	439
c227f099	440	size = read(fd, hdr, sizeof(uboot_image_header_t));
1c7b3754	441	if (size < 0)
265ca29a	442	goto out;
1c7b3754 PB	443
	444	bswap_uboot_header(hdr);
	445
	446	if (hdr->ih_magic != IH_MAGIC)
265ca29a	447	goto out;
1c7b3754	448
7e5f90fa AL	449	/* TODO: Implement other image types. */
	450	if (hdr->ih_type != IH_TYPE_KERNEL) {
	451	fprintf(stderr, "Can only load u-boot image type \"kernel\"\n");
265ca29a	452	goto out;
1c7b3754 PB	453	}
1c7b3754 PB	454
5a123577 AL	455	switch (hdr->ih_comp) {
	456	case IH_COMP_NONE:
	457	case IH_COMP_GZIP:
	458	break;
	459	default:
	460	fprintf(stderr,
	461	"Unable to load u-boot images with compression type %d\n",
	462	hdr->ih_comp);
265ca29a	463	goto out;
1c7b3754 PB	464	}
	465
	466	/* TODO: Check CPU type. */
	467	if (is_linux) {
7e5f90fa	468	if (hdr->ih_os == IH_OS_LINUX)
1c7b3754 PB	469	*is_linux = 1;
	470	else
	471	*is_linux = 0;
	472	}
	473
	474	*ep = hdr->ih_ep;
	475	data = qemu_malloc(hdr->ih_size);
1c7b3754 PB	476
	477	if (read(fd, data, hdr->ih_size) != hdr->ih_size) {
	478	fprintf(stderr, "Error reading file\n");
265ca29a	479	goto out;
1c7b3754 PB	480	}
1c7b3754 PB	481
5a123577 AL	482	if (hdr->ih_comp == IH_COMP_GZIP) {
	483	uint8_t *compressed_data;
	484	size_t max_bytes;
	485	ssize_t bytes;
	486
	487	compressed_data = data;
	488	max_bytes = UBOOT_MAX_GUNZIP_BYTES;
	489	data = qemu_malloc(max_bytes);
	490
	491	bytes = gunzip(data, max_bytes, compressed_data, hdr->ih_size);
	492	qemu_free(compressed_data);
	493	if (bytes < 0) {
	494	fprintf(stderr, "Unable to decompress gzipped image!\n");
	495	goto out;
	496	}
	497	hdr->ih_size = bytes;
	498	}
	499
45a50b16	500	rom_add_blob_fixed(filename, data, hdr->ih_size, hdr->ih_load);
1c7b3754	501
21cafd08 AL	502	if (loadaddr)
	503	*loadaddr = hdr->ih_load;
	504
265ca29a	505	ret = hdr->ih_size;
1c7b3754	506
265ca29a	507	out:
1c7b3754 PB	508	if (data)
	509	qemu_free(data);
	510	close(fd);
265ca29a	511	return ret;
1c7b3754	512	}
45a50b16 GH	513
	514	/*
	515	* Functions for reboot-persistent memory regions.
	516	* - used for vga bios and option roms.
	517	* - also linux kernel (-kernel / -initrd).
	518	*/
	519
	520	typedef struct Rom Rom;
	521
	522	struct Rom {
	523	char *name;
	524	char *path;
	525	size_t romsize;
	526	uint8_t *data;
	527	int align;
	528	int isrom;
	529
	530	target_phys_addr_t min;
	531	target_phys_addr_t max;
	532	target_phys_addr_t addr;
	533	QTAILQ_ENTRY(Rom) next;
	534	};
	535
	536	static QTAILQ_HEAD(, Rom) roms = QTAILQ_HEAD_INITIALIZER(roms);
de2aff17	537	int rom_enable_driver_roms;
45a50b16 GH	538
	539	static void rom_insert(Rom *rom)
	540	{
	541	Rom *item;
	542
	543	/* list is ordered by load address */
	544	QTAILQ_FOREACH(item, &roms, next) {
	545	if (rom->min >= item->min)
	546	continue;
	547	QTAILQ_INSERT_BEFORE(item, rom, next);
	548	return;
	549	}
	550	QTAILQ_INSERT_TAIL(&roms, rom, next);
	551	}
	552
	553	int rom_add_file(const char *file,
	554	target_phys_addr_t min, target_phys_addr_t max, int align)
	555	{
	556	Rom *rom;
	557	int rc, fd = -1;
	558
	559	rom = qemu_mallocz(sizeof(*rom));
	560	rom->name = qemu_strdup(file);
	561	rom->path = qemu_find_file(QEMU_FILE_TYPE_BIOS, rom->name);
	562	if (rom->path == NULL) {
14a3f32d	563	rom->path = qemu_strdup(file);
45a50b16 GH	564	}
45a50b16 GH	565
cef290b8	566	fd = open(rom->path, O_RDONLY \| O_BINARY);
45a50b16 GH	567	if (fd == -1) {
	568	fprintf(stderr, "Could not open option rom '%s': %s\n",
	569	rom->path, strerror(errno));
	570	goto err;
	571	}
	572
	573	rom->align = align;
	574	rom->min = min;
	575	rom->max = max;
	576	rom->romsize = lseek(fd, 0, SEEK_END);
	577	rom->data = qemu_mallocz(rom->romsize);
	578	lseek(fd, 0, SEEK_SET);
	579	rc = read(fd, rom->data, rom->romsize);
	580	if (rc != rom->romsize) {
	581	fprintf(stderr, "rom: file %-20s: read error: rc=%d (expected %zd)\n",
	582	rom->name, rc, rom->romsize);
	583	goto err;
	584	}
	585	close(fd);
	586	rom_insert(rom);
	587	return 0;
	588
	589	err:
	590	if (fd != -1)
	591	close(fd);
	592	qemu_free(rom->data);
	593	qemu_free(rom->path);
	594	qemu_free(rom->name);
	595	qemu_free(rom);
	596	return -1;
	597	}
	598
	599	int rom_add_blob(const char name, const void blob, size_t len,
	600	target_phys_addr_t min, target_phys_addr_t max, int align)
	601	{
	602	Rom *rom;
	603
	604	rom = qemu_mallocz(sizeof(*rom));
	605	rom->name = qemu_strdup(name);
	606	rom->align = align;
	607	rom->min = min;
	608	rom->max = max;
	609	rom->romsize = len;
	610	rom->data = qemu_mallocz(rom->romsize);
	611	memcpy(rom->data, blob, len);
	612	rom_insert(rom);
	613	return 0;
	614	}
	615
de2aff17 GH	616	int rom_add_vga(const char *file)
	617	{
	618	if (!rom_enable_driver_roms)
	619	return 0;
	620	return rom_add_file(file, PC_ROM_MIN_VGA, PC_ROM_MAX, PC_ROM_ALIGN);
	621	}
	622
	623	int rom_add_option(const char *file)
	624	{
	625	if (!rom_enable_driver_roms)
	626	return 0;
	627	return rom_add_file(file, PC_ROM_MIN_OPTION, PC_ROM_MAX, PC_ROM_ALIGN);
	628	}
	629
45a50b16 GH	630	static void rom_reset(void *unused)
	631	{
	632	Rom *rom;
	633
	634	QTAILQ_FOREACH(rom, &roms, next) {
	635	if (rom->data == NULL)
	636	continue;
	637	cpu_physical_memory_write_rom(rom->addr, rom->data, rom->romsize);
	638	if (rom->isrom) {
	639	/* rom needs to be written only once */
	640	qemu_free(rom->data);
	641	rom->data = NULL;
	642	}
	643	}
	644	}
	645
	646	int rom_load_all(void)
	647	{
	648	target_phys_addr_t addr = 0;
	649	int memtype;
	650	Rom *rom;
	651
	652	QTAILQ_FOREACH(rom, &roms, next) {
	653	if (addr < rom->min)
	654	addr = rom->min;
	655	if (rom->max) {
	656	/* load address range */
	657	if (rom->align) {
	658	addr += (rom->align-1);
	659	addr &= ~(rom->align-1);
	660	}
	661	if (addr + rom->romsize > rom->max) {
	662	fprintf(stderr, "rom: out of memory (rom %s, "
	663	"addr 0x" TARGET_FMT_plx
	664	", size 0x%zx, max 0x" TARGET_FMT_plx ")\n",
	665	rom->name, addr, rom->romsize, rom->max);
	666	return -1;
	667	}
	668	} else {
	669	/* fixed address requested */
	670	if (addr != rom->min) {
	671	fprintf(stderr, "rom: requested regions overlap "
	672	"(rom %s. free=0x" TARGET_FMT_plx
	673	", addr=0x" TARGET_FMT_plx ")\n",
	674	rom->name, addr, rom->min);
	675	return -1;
	676	}
	677	}
	678	rom->addr = addr;
	679	addr += rom->romsize;
	680	memtype = cpu_get_physical_page_desc(rom->addr) & (3 << IO_MEM_SHIFT);
	681	if (memtype == IO_MEM_ROM)
	682	rom->isrom = 1;
	683	}
	684	qemu_register_reset(rom_reset, NULL);
45a50b16 GH	685	return 0;
	686	}
	687
3c178e72 GH	688	static Rom *find_rom(target_phys_addr_t addr)
	689	{
	690	Rom *rom;
	691
	692	QTAILQ_FOREACH(rom, &roms, next) {
	693	if (rom->max)
	694	continue;
	695	if (rom->min > addr)
	696	continue;
	697	if (rom->min + rom->romsize < addr)
	698	continue;
	699	return rom;
	700	}
	701	return NULL;
	702	}
	703
	704	void *rom_ptr(target_phys_addr_t addr)
	705	{
	706	Rom *rom;
	707
	708	rom = find_rom(addr);
	709	if (!rom \|\| !rom->data)
	710	return NULL;
	711	return rom->data + (addr - rom->min);
	712	}
	713
45a50b16 GH	714	void do_info_roms(Monitor *mon)
	715	{
	716	Rom *rom;
	717
	718	QTAILQ_FOREACH(rom, &roms, next) {
	719	monitor_printf(mon, "addr=" TARGET_FMT_plx
	720	" size=0x%06zx mem=%s name=\"%s\" \n",
	721	rom->addr, rom->romsize,
	722	rom->isrom ? "rom" : "ram",
	723	rom->name);
	724	}
	725	}