fixed the boot services offset

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
-BOOT_SERVICES          equ 80
+BOOT_SERVICES          equ 96
 
        ; 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
-       push rax
+       sub rsp, 32
        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]
@@ -70,6 +70,11 @@ start:
        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:
@@ -119,7 +124,7 @@ str_hello dw __utf16__(`qurashee!\r\n`),0
 
        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