source: project/chicken/branches/prerelease/apply-hack.x86-64.s @ 9381

Last change on this file since 9381 was 9381, checked in by Ivan Raikov, 12 years ago

Merged trunk into prerelease

File size: 2.3 KB
Line 
1/* Apply-hack.x86-64.s
2;
3; Copyright (c) 2007, Felix L. Winkelmann
4; Copyright (c) 2008, The Chicken Team
5; All rights reserved.
6;
7; Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following
8; conditions are met:
9;
10;   Redistributions of source code must retain the above copyright notice, this list of conditions and the following
11;     disclaimer.
12;   Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
13;     disclaimer in the documentation and/or other materials provided with the distribution.
14;   Neither the name of the author nor the names of its contributors may be used to endorse or promote
15;     products derived from this software without specific prior written permission.
16;
17; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
18; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
19; AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
20; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22; SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24; OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25; POSSIBILITY OF SUCH DAMAGE.
26*/
27
28        .text
29
30        .globl _C_do_apply_hack
31#ifndef __APPLE__
32        .type _C_do_apply_hack, @function
33#endif
34
35_C_do_apply_hack:
36        subq $8, %rsp           /* force non-16 byte alignment */
37        movq %rdi, %r11         /* get proc */
38        movq %rsi, %r10         /* save buffer address, before we clobber %rsi */
39        cmpl $6, %edx           /* clamp at 6 */
40        ja l2
41        je l3
42        movq $6, %rbx           /* (6 - count) * 4 gives instruction address */
43        subq %rdx, %rbx
44        shlq $2, %rbx
45        lea l3(%rip), %rdx
46        addq %rdx, %rbx
47        jmp *%rbx
48l2:     lea 48(%r10), %rsp      /* %r10 must be 16-byte aligned at this point */
49l3:     movq 40(%r10), %r9      /* fill registers... */
50        movq 32(%r10), %r8
51        movq 24(%r10), %rcx
52        movq 16(%r10), %rdx
53        movq 8(%r10), %rsi
54        movq (%r10), %rdi
55        xorq %rax, %rax
56        call *%r11
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