Compile loader only once

Callers must pass ELF machine, byte swapping and symbol LSB clearing
information to ELF loader. A.out loader needs page size information, pass
that too as a parameter.

Extract prototypes to a separate file. Move loader.[ch] and elf_ops.h under hw.

Adjust callers. Also use target_phys_addr_t instead of target_ulong for
addresses: loader addresses aren't virtual.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 0 insertions, 544 deletions

diff --git a/loader.c b/loader.c
deleted file mode 100644
index 0cbcf9c6a..000000000
--- a/loader.c
+++ /dev/null
@@ -1,544 +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.
- *
- * 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 "qemu-common.h"
-#include "disas.h"
-#include "sysemu.h"
-#include "uboot_image.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 */
-};
-
-#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_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 (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 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 HOST_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, address_offset, must_swab, pentry,
-                         lowaddr, highaddr);
-    } else {
-        ret = load_elf32(fd, address_offset, 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 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_ulong *ep, target_ulong *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;
-}