Lncvrt/grub
1
0 Fork 0
mirror of https://git.savannah.gnu.org/git/grub.git synced 2026-10-20 22:48:22 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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 committed 2010-09-02 22:36:09 +01:00
1 parent 529cc99acf
commit 9056cbf38e
5 files changed
+37 -2
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

grub-core/lib/i386/relocator32.S
+15 -1
View File
@@ -65,13 +65,27 @@ VARIABLE(grub_relocator32_esp)
movl %eax, %esp
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_relocator32_ebp)
.long 0
movl %eax, %ebp
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_relocator32_esi)
.long 0
movl %eax, %esi
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_relocator32_edi)
.long 0
movl %eax, %edi
/* mov imm32, %eax */
.byte 0xb8
VARIABLE(grub_relocator32_eax)