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2009-06-27 Pavel Roskin <proski@gnu.org>

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2009-06-27  Robert Millan  <rmh.grub@aybabtu.com>

        * include/grub/dl.h: Include grub/elf.h.
        (struct grub_dl): Add symtab field.
        * kern/dl.c [GRUB_MACHINE_QEMU]: Define
        GRUB_MODULES_MACHINE_READONLY.
        (grub_dl_resolve_symbols): Populate mod->symtab, making a copy
        of the header for read-only modules.
        (grub_dl_unload): Free mod->symtab for read-only modules.
        * kern/i386/dl.c: Use mod->symtab.
        * kern/powerpc/dl.c: Likewise.
        * kern/sparc64/dl.c: Likewise.
        * kern/x86_64/dl.c: Likewise.

        * conf/i386-qemu.rmk: New file.
        * kern/i386/qemu/startup.S: Likewise.
        * kern/i386/qemu/mmap.c: Likewise.
        * boot/i386/qemu/boot.S: Likewise.
        * include/grub/i386/qemu/time.h: Likewise.
        * include/grub/i386/qemu/serial.h: Likewise.
        * include/grub/i386/qemu/kernel.h: Likewise.
        * include/grub/i386/qemu/console.h: Likewise.
        * include/grub/i386/qemu/boot.h: Likewise.
        * include/grub/i386/qemu/init.h: Likewise.
        * include/grub/i386/qemu/machine.h: Likewise.
        * include/grub/i386/qemu/loader.h: Likewise.
        * include/grub/i386/qemu/memory.h: Likewise.

        * conf/i386-coreboot.rmk (GRUB_BOOT_MACHINE_LINK_ADDR)
        (GRUB_KERNEL_MACHINE_LINK_ADDR): New variables.
        [qemu] (pkglib_IMAGES): Add `boot.img'.
        [qemu] (boot_img_SOURCES, boot_img_ASFLAGS, boot_img_LDFLAGS)
        [qemu] (boot_img_FORMAT): New variables.
        [qemu] (bin_UTILITIES): Add `grub-mkimage'.
        [qemu] (grub_mkimage_SOURCES, grub_mkimage_CFLAGS): New variables.
        [qemu] (kernel_img_SOURCES, kernel_img_HEADERS, kernel_img_CFLAGS)
        [qemu] (kernel_img_ASFLAGS, kernel_img_LDFLAGS)
        [qemu] (kernel_img_FORMAT): New variables.

        * configure.ac: Recognise `i386-qemu'.

        * util/i386/pc/grub-mkimage.c (compress_kernel): Add dummy variant
        (for no compression).
        [GRUB_MACHINE_QEMU] (generate_image): Misc adjustments to produce
        a valid i386 ROM image.  Make `GRUB_KERNEL_MACHINE_COMPRESSED_SIZE',
        `GRUB_KERNEL_MACHINE_INSTALL_DOS_PART' and
        `GRUB_KERNEL_MACHINE_INSTALL_BSD_PART' optional features (with
        ifdefs).
This commit is contained in:
robertmh 2009-06-27 11:18:10 +00:00
parent 97fe384ecb
commit 8231fb77c6
24 changed files with 584 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

97
kern/i386/qemu/startup.S Normal file
View file

@ -0,0 +1,97 @@
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 1999,2000,2001,2002,2003,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
*
* GRUB 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 3 of the License, or
* (at your option) any later version.
*
* GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <grub/symbol.h>
#include <grub/machine/memory.h>
#include <grub/machine/kernel.h>
.text
.code32
.globl _start
_start:
jmp codestart
. = _start + GRUB_KERNEL_MACHINE_CORE_ENTRY_ADDR
VARIABLE(grub_core_entry_addr)
.long 0
VARIABLE(grub_kernel_image_size)
.long 0
VARIABLE(grub_prefix)
/* to be filled by grub-mkimage */
/*
* Leave some breathing room for the prefix.
*/
. = _start + GRUB_KERNEL_MACHINE_DATA_END
codestart:
/* Relocate to low memory. First we figure out our location.
We will derive the rom start address from it. */
call 1f
1: popl %esi
/* Rom size is a multiple of 64 kiB. With this we get the
value of `grub_core_entry_addr' in %esi. */
xorw %si, %si
/* ... which allows us to access `grub_kernel_image_size'
before relocation. */
movl (grub_kernel_image_size - _start)(%esi), %ecx
movl $_start, %edi
cld
rep
movsb
ljmp $GRUB_MEMORY_MACHINE_PROT_MODE_CSEG, $1f
1:
#ifdef APPLE_CC
/* clean out the bss */
bss_start_abs = ABS (bss_start)
bss_end_abs = ABS (bss_end)
movl bss_start_abs, %edi
/* compute the bss length */
movl bss_end_abs, %ecx
subl %edi, %ecx
#else
/* clean out the bss */
movl $BSS_START_SYMBOL, %edi
/* compute the bss length */
movl $END_SYMBOL, %ecx
subl %edi, %ecx
#endif
/* clean out */
xorl %eax, %eax
cld
rep
stosb
/*
* Call the start of main body of C code.
*/
call EXT_C(grub_main)
/* This should never happen. */
jmp EXT_C(grub_stop)