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-rw-r--r--qemu/tests/tcg/test-i386-vm86.S103
1 files changed, 103 insertions, 0 deletions
diff --git a/qemu/tests/tcg/test-i386-vm86.S b/qemu/tests/tcg/test-i386-vm86.S
new file mode 100644
index 000000000..3bb96c992
--- /dev/null
+++ b/qemu/tests/tcg/test-i386-vm86.S
@@ -0,0 +1,103 @@
+ .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: