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alloca86_64-bt.S@ 331

Last change on this file since 331 was 331, checked in by coas-nagasima, 6 years ago
prototoolに関連するプロジェクトをnewlibからmuslを使うよう変更・更新 ntshellをnewlibの下位の実装から、muslのsyscallの実装に変更・更新以下のOSSをアップデート・mruby-1.3.0 ・musl-1.1.18 ・onigmo-6.1.3 ・tcc-0.9.27 以下のOSSを追加・openssl-1.1.0e ・curl-7.57.0 ・zlib-1.2.11 以下のmrbgemsを追加・iij/mruby-digest ・iij/mruby-env ・iij/mruby-errno ・iij/mruby-iijson ・iij/mruby-ipaddr ・iij/mruby-mock ・iij/mruby-require ・iij/mruby-tls-openssl
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File size: 975 bytes

Line
1	/* ---------------------------------------------- */
2	/* alloca86_64.S */
3
4	.globl __bound_alloca
5	__bound_alloca:
6
7	#ifdef _WIN32
8	# bound checking is not implemented
9	pop %rdx
10	mov %rcx,%rax
11	add $15,%rax
12	and $-16,%rax
13	jz p3
14
15	p1:
16	cmp $4096,%rax
17	jbe p2
18	test %rax,-4096(%rsp)
19	sub $4096,%rsp
20	sub $4096,%rax
21	jmp p1
22	p2:
23
24	sub %rax,%rsp
25	mov %rsp,%rax
26	add $32,%rax
27
28	p3:
29	push %rdx
30	ret
31	#else
32	pop %rdx
33	mov %rdi,%rax
34	mov %rax,%rsi # size, a second parm to the __bound_new_region
35
36	add $15,%rax
37	and $-16,%rax
38	jz p3
39
40
41	sub %rax,%rsp
42	mov %rsp,%rdi # pointer, a first parm to the __bound_new_region
43	mov %rsp,%rax
44
45	push %rdx
46	push %rax
47	call __bound_new_region
48	pop %rax
49	pop %rdx
50
51	p3:
52	push %rdx
53	ret
54	#endif
55
56	/* ---------------------------------------------- */

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