test-i386-vm86.S@ 9721

Last change on this file since 9721 was 1, checked in by vboxsync, 55 years ago
import
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File size: 1.8 KB

Line
1	.code16
2	.globl vm86_code_start
3	.globl vm86_code_end
4
5	#define GET_OFFSET(x) ((x) - vm86_code_start + 0x100)
6
7	vm86_code_start:
8	movw $GET_OFFSET(hello_world), %dx
9	movb $0x09, %ah
10	int $0x21
11
12	/* prepare int 0x90 vector */
13	xorw %ax, %ax
14	movw %ax, %es
15	es movw $GET_OFFSET(int90_test), 0x90 * 4
16	es movw %cs, 0x90 * 4 + 2
17
18	/* launch int 0x90 */
19
20	int $0x90
21
22	/* test IF support */
23	movw $GET_OFFSET(IF_msg), %dx
24	movb $0x09, %ah
25	int $0x21
26
27	pushf
28	popw %dx
29	movb $0xff, %ah
30	int $0x21
31
32	cli
33	pushf
34	popw %dx
35	movb $0xff, %ah
36	int $0x21
37
38	sti
39	pushfl
40	popl %edx
41	movb $0xff, %ah
42	int $0x21
43
44	#if 0
45	movw $GET_OFFSET(IF_msg1), %dx
46	movb $0x09, %ah
47	int $0x21
48
49	pushf
50	movw %sp, %bx
51	andw $~0x200, (%bx)
52	popf
53	#else
54	cli
55	#endif
56
57	pushf
58	popw %dx
59	movb $0xff, %ah
60	int $0x21
61
62	pushfl
63	movw %sp, %bx
64	orw $0x200, (%bx)
65	popfl
66
67	pushfl
68	popl %edx
69	movb $0xff, %ah
70	int $0x21
71
72	movb $0x00, %ah
73	int $0x21
74
75	int90_test:
76	pushf
77	pop %dx
78	movb $0xff, %ah
79	int $0x21
80
81	movw %sp, %bx
82	movw 4(%bx), %dx
83	movb $0xff, %ah
84	int $0x21
85
86	movw $GET_OFFSET(int90_msg), %dx
87	movb $0x09, %ah
88	int $0x21
89	iret
90
91	int90_msg:
92	.string "INT90 started\n$"
93
94	hello_world:
95	.string "Hello VM86 world\n$"
96
97	IF_msg:
98	.string "VM86 IF test\n$"
99
100	IF_msg1:
101	.string "If you see a diff here, your Linux kernel is buggy, please update to 2.4.20 kernel\n$"
102
103	vm86_code_end:
104

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