vbatts/grub
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Zero %ebp and %edi when entering Linux's 32-bit entry point, as

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required by the boot protocol.
* include/grub/i386/relocator.h (struct grub_relocator32_state): Add
ebp and edi members.
* grub-core/lib/i386/relocator.c (grub_relocator_boot): Handle
state.ebp and state.edi.
* grub-core/lib/i386/relocator32.S (grub_relocator32_start): Set
%ebp and %edi according to grub_relocator32_ebp and
grub_relocator32_edi respectively.
* grub-core/loader/i386/linux.c (grub_linux_boot): Zero state.ebp
and state.edi.
This commit is contained in:
Colin Watson 2010-09-02 22:36:09 +01:00
parent 529cc99acf
commit 9056cbf38e
5 changed files with 37 additions and 2 deletions
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2
include/grub/i386/relocator.h
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@ -26,12 +26,14 @@
struct grub_relocator32_state
{
grub_uint32_t esp;
grub_uint32_t ebp;
grub_uint32_t eax;
grub_uint32_t ebx;
grub_uint32_t ecx;
grub_uint32_t edx;
grub_uint32_t eip;
grub_uint32_t esi;
grub_uint32_t edi;
};
struct grub_relocator16_state