gnu-efi/lib/ia32/setjmp.S
Nigel Croxon dae0b4b0b0 Turns out we actually need setjmp in one of gnu-efi's prominent
users, and it seems to make more sense to put it here than in
the application.

All of these are derived from the Tiano code, but I re-wrote the
x86_64 one because we use the ELF psABI calling conventions instead
of the MS ABI calling conventions.  Which is to say you probably
shouldn't setjmp()/longjmp() between functions with EFIAPI (aka
__attribute__((ms_abi))) and those without.

Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Nigel Croxon <nigel.croxon@hp.com>
2015-05-14 12:20:51 -04:00

38 lines
863 B
ArmAsm

/*
* Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.
* This program and the accompanying materials are licensed and made
available
* under the terms and conditions of the BSD License which accompanies
this
* distribution. The full text of the license may be found at
* http://opensource.org/licenses/bsd-license.php.
*
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS"
BASIS,
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR
* IMPLIED.
*/
.text
.globl setjmp
.type setjmp, @function
setjmp:
pop %ecx
movl (%esp), %edx
movl %ebx, (%edx)
movl %esi, 4(%edx)
movl %edi, 8(%edx)
movl %ebp, 12(%edx)
movl %esp, 16(%edx)
xorl %eax, %eax
jmp *%ecx
.globl longjmp
.type longjmp, @function
longjmp:
pop %eax
pop %edx
pop %eax
movl (%edx), %ebx
movl 4(%edx), %esi
movl 8(%edx), %edi