diff options
| author | Ard Biesheuvel <ardb@kernel.org> | 2022-11-22 17:10:04 +0100 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-11-22 19:23:01 +0100 |
| commit | 91592b5c0c2f076ff9d8cc0c14aa563448ac9fc4 (patch) | |
| tree | 51d0ae6d57feb2a6b792dd2e541158d56b3fed51 /arch/x86/boot/compressed | |
| parent | 5c3a85f35b583259cf5ca0344cd79c8899ba1bb7 (diff) | |
x86/boot/compressed: Move efi32_pe_entry into .text section
Move efi32_pe_entry() into the .text section, so that it can be moved
out of head_64.S and into a separate compilation unit in a subsequent
patch.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20221122161017.2426828-5-ardb@kernel.org
Diffstat (limited to 'arch/x86/boot/compressed')
| -rw-r--r-- | arch/x86/boot/compressed/head_64.S | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index f3d7de52e252..9dd9010042b9 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -770,7 +770,7 @@ SYM_DATA(efi_is64, .byte 1) #define BS32_handle_protocol 88 // offsetof(efi_boot_services_32_t, handle_protocol) #define LI32_image_base 32 // offsetof(efi_loaded_image_32_t, image_base) - __HEAD + .text .code32 SYM_FUNC_START(efi32_pe_entry) /* @@ -792,12 +792,11 @@ SYM_FUNC_START(efi32_pe_entry) call 1f 1: pop %ebx - subl $ rva(1b), %ebx /* Get the loaded image protocol pointer from the image handle */ leal -4(%ebp), %eax pushl %eax // &loaded_image - leal rva(loaded_image_proto)(%ebx), %eax + leal (loaded_image_proto - 1b)(%ebx), %eax pushl %eax // pass the GUID address pushl 8(%ebp) // pass the image handle @@ -826,13 +825,13 @@ SYM_FUNC_START(efi32_pe_entry) movl 12(%ebp), %edx // sys_table movl -4(%ebp), %esi // loaded_image movl LI32_image_base(%esi), %esi // loaded_image->image_base - movl %ebx, %ebp // startup_32 for efi32_pe_stub_entry + leal (startup_32 - 1b)(%ebx), %ebp // runtime address of startup_32 /* * We need to set the image_offset variable here since startup_32() will * use it before we get to the 64-bit efi_pe_entry() in C code. */ - subl %esi, %ebx - movl %ebx, rva(image_offset)(%ebp) // save image_offset + subl %esi, %ebp // calculate image_offset + movl %ebp, (image_offset - 1b)(%ebx) // save image_offset xorl %esi, %esi jmp efi32_entry // pass %ecx, %edx, %esi // no other registers remain live |