root / tests / tcg / test-i386-vm86.S @ c09015dd
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.code16 |
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.globl vm86_code_start |
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.globl vm86_code_end |
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#define GET_OFFSET(x) ((x) - vm86_code_start + 0x100) |
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vm86_code_start: |
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movw $GET_OFFSET(hello_world), %dx |
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movb $0x09, %ah |
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int $0x21 |
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|
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/* prepare int 0x90 vector */ |
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xorw %ax, %ax |
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movw %ax, %es |
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es movw $GET_OFFSET(int90_test), 0x90 * 4 |
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es movw %cs, 0x90 * 4 + 2 |
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|
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/* launch int 0x90 */ |
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int $0x90 |
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|
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/* test IF support */ |
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movw $GET_OFFSET(IF_msg), %dx |
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movb $0x09, %ah |
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int $0x21 |
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|
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pushf |
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popw %dx |
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movb $0xff, %ah |
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int $0x21 |
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|
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cli |
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pushf |
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popw %dx |
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movb $0xff, %ah |
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int $0x21 |
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|
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sti |
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pushfl |
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popl %edx |
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movb $0xff, %ah |
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int $0x21 |
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|
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#if 0 |
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movw $GET_OFFSET(IF_msg1), %dx |
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movb $0x09, %ah |
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int $0x21 |
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|
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pushf |
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movw %sp, %bx |
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andw $~0x200, (%bx) |
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popf |
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#else |
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cli |
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#endif |
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|
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pushf |
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popw %dx |
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movb $0xff, %ah |
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int $0x21 |
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|
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pushfl |
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movw %sp, %bx |
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orw $0x200, (%bx) |
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popfl |
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|
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pushfl |
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popl %edx |
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movb $0xff, %ah |
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int $0x21 |
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|
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movb $0x00, %ah |
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int $0x21 |
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int90_test: |
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pushf |
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pop %dx |
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movb $0xff, %ah |
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int $0x21 |
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|
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movw %sp, %bx |
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movw 4(%bx), %dx |
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movb $0xff, %ah |
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int $0x21 |
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|
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movw $GET_OFFSET(int90_msg), %dx |
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movb $0x09, %ah |
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int $0x21 |
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iret |
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|
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int90_msg: |
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.string "INT90 started\n$" |
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|
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hello_world: |
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.string "Hello VM86 world\n$" |
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IF_msg: |
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.string "VM86 IF test\n$" |
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IF_msg1: |
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.string "If you see a diff here, your Linux kernel is buggy, please update to 2.4.20 kernel\n$" |
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vm86_code_end: |