diff options
Diffstat (limited to 'tests/test-i386-vm86.S')
| -rw-r--r-- | tests/test-i386-vm86.S | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/tests/test-i386-vm86.S b/tests/test-i386-vm86.S new file mode 100644 index 0000000..a972f1b --- /dev/null +++ b/tests/test-i386-vm86.S @@ -0,0 +1,104 @@ + .code16 + .globl vm86_code_start + .globl vm86_code_end + +#define GET_OFFSET(x) ((x) - vm86_code_start + 0x100) + +vm86_code_start: + movw $GET_OFFSET(hello_world), %dx + movb $0x09, %ah + int $0x21 + + /* prepare int 0x90 vector */ + xorw %ax, %ax + movw %ax, %es + es movw $GET_OFFSET(int90_test), 0x90 * 4 + es movw %cs, 0x90 * 4 + 2 + + /* launch int 0x90 */ + + int $0x90 + + /* test IF support */ + movw $GET_OFFSET(IF_msg), %dx + movb $0x09, %ah + int $0x21 + + pushf + popw %dx + movb $0xff, %ah + int $0x21 + + cli + pushf + popw %dx + movb $0xff, %ah + int $0x21 + + sti + pushfl + popl %edx + movb $0xff, %ah + int $0x21 + +#if 0 + movw $GET_OFFSET(IF_msg1), %dx + movb $0x09, %ah + int $0x21 + + pushf + movw %sp, %bx + andw $~0x200, (%bx) + popf +#else + cli +#endif + + pushf + popw %dx + movb $0xff, %ah + int $0x21 + + pushfl + movw %sp, %bx + orw $0x200, (%bx) + popfl + + pushfl + popl %edx + movb $0xff, %ah + int $0x21 + + movb $0x00, %ah + int $0x21 + +int90_test: + pushf + pop %dx + movb $0xff, %ah + int $0x21 + + movw %sp, %bx + movw 4(%bx), %dx + movb $0xff, %ah + int $0x21 + + movw $GET_OFFSET(int90_msg), %dx + movb $0x09, %ah + int $0x21 + iret + +int90_msg: + .string "INT90 started\n$" + +hello_world: + .string "Hello VM86 world\n$" + +IF_msg: + .string "VM86 IF test\n$" + +IF_msg1: + .string "If you see a diff here, your Linux kernel is buggy, please update to 2.4.20 kernel\n$" + +vm86_code_end: +
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