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/* x86-sysv-asm.S -- 386 FFI trampoline for SVr4-like ABIs -*- asm -*-
*
* Author: Ian.Piumarta@INRIA.Fr
*
* Last edited: 2009-09-10 12:55:54 by piumarta on emilia-2.local
*
* Copyright (C) 1996-2009 by Ian Piumarta and other authors/contributors
* listed elsewhere in this file.
* All rights reserved.
*
* This file is part of Unix Squeak.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
.text
.globl ffiCallAddressOf
ffiCallAddressOf: /* 8=addr, 12=stack, 16=stackSize */
pushl %ebp
movl %esp, %ebp
movl 16(%ebp), %ecx
testl %ecx, %ecx
je 2f
subl %ecx, %esp
subl $4, %ecx
movl 12(%ebp), %edx
1: movl (%edx,%ecx,1), %eax
movl %eax, (%esp,%ecx,1)
subl $4, %ecx
jnc 1b
2: call *8(%ebp)
movl %eax, ffiIntReturnValue
movl %edx, ffiLongReturnValue
fstpl ffiFloatReturnValue
movl %ebp, %esp
popl %ebp
ret
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