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sortix--sortix/libc/x86/setjmp.S
2014-03-01 14:37:40 +01:00

60 lines
1.6 KiB
ArmAsm

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2013.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
x86/setjmp.S
Implement the assembly part of setjmp.
*******************************************************************************/
.global setjmp
.type setjmp, @function
setjmp:
mov 4(%esp), %ecx
# TODO: Floating point stuff!
mov %ebx, 0x00(%ecx)
mov %esi, 0x04(%ecx)
mov %edi, 0x08(%ecx)
mov %ebp, 0x0C(%ecx)
mov %esp, 0x10(%ecx)
mov 0(%esp), %eax
mov %eax, 0x14(%ecx)
xorl %eax, %eax
.Lsetjmp_return:
ret
.size setjmp, . - setjmp
.global longjmp
.type longjmp, @function
longjmp:
mov 4(%esp), %ecx
mov 8(%esp), %edx
testl %edx, %edx
jnz 1f
mov $1, %edx
1:
# TODO: Floating point stuff!
mov 0x04(%ecx), %esi
mov 0x08(%ecx), %edi
mov 0x0C(%ecx), %ebp
mov 0x10(%ecx), %esp
mov 0x14(%ecx), %eax
mov %eax, 0(%esp)
mov %edx, %eax
jmp .Lsetjmp_return
.size longjmp, . - longjmp