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fixed the boot services offset
master
author
John Tsiombikas
<nuclear@member.fsf.org>
Mon, 4 Jul 2022 14:41:56 +0000
(17:41 +0300)
committer
John Tsiombikas
<nuclear@member.fsf.org>
Mon, 4 Jul 2022 14:41:56 +0000
(17:41 +0300)
efitest.asm
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diff --git
a/efitest.asm
b/efitest.asm
index
2cc79a2
..
1a8e212
100644
(file)
--- a/
efitest.asm
+++ b/
efitest.asm
@@
-5,7
+5,7
@@
; EFI_SYSTEM_TABLE offsets
SIMPLE_TEXT_OUTPUT equ 64
; EFI_SYSTEM_TABLE offsets
SIMPLE_TEXT_OUTPUT equ 64
-BOOT_SERVICES equ 80
+BOOT_SERVICES equ 96
; EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL function offsets
TEXT_OUT_STRING equ 8
; EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL function offsets
TEXT_OUT_STRING equ 8
@@
-58,11
+58,11
@@
start:
lea r9, [mmap_descsz]
lea rax, [mmap_descver]
push rax
lea r9, [mmap_descsz]
lea rax, [mmap_descver]
push rax
- push rax
+ sub rsp, 32
mov rax, [systab]
mov rbx, [rax + BOOT_SERVICES]
call [rbx + BOOT_GET_MEMORY_MAP]
mov rax, [systab]
mov rbx, [rax + BOOT_SERVICES]
call [rbx + BOOT_GET_MEMORY_MAP]
- add rsp, 16
+ add rsp, 40
mov rcx, [efihandle]
mov rdx, [mmap_key]
mov rcx, [efihandle]
mov rdx, [mmap_key]
@@
-70,6
+70,11
@@
start:
mov rbx, [rax + BOOT_SERVICES]
call [rbx + BOOT_EXIT_BOOT_SERVICES]
mov rbx, [rax + BOOT_SERVICES]
call [rbx + BOOT_EXIT_BOOT_SERVICES]
+ mov edi, 0a0000h
+ mov ecx, 16000
+ mov eax, 00ff0000h
+ rep stosd
+
.hang: jmp .hang
get_rip:
.hang: jmp .hang
get_rip:
@@
-119,7
+124,7
@@
str_hello dw __utf16__(`qurashee!\r\n`),0
align 8
; memory map data
align 8
; memory map data
-mmap_size dq 0
+mmap_size dq 4096
mmap_key dq 0
mmap_descsz dq 0
mmap_descver dq 0
mmap_key dq 0
mmap_descsz dq 0
mmap_descver dq 0