summaryrefslogtreecommitdiffstats
path: root/qemu/tests/tcg/test-i386-code16.S
diff options
context:
space:
mode:
Diffstat (limited to 'qemu/tests/tcg/test-i386-code16.S')
-rw-r--r--qemu/tests/tcg/test-i386-code16.S79
1 files changed, 79 insertions, 0 deletions
diff --git a/qemu/tests/tcg/test-i386-code16.S b/qemu/tests/tcg/test-i386-code16.S
new file mode 100644
index 000000000..816c24b96
--- /dev/null
+++ b/qemu/tests/tcg/test-i386-code16.S
@@ -0,0 +1,79 @@
+ .code16
+ .globl code16_start
+ .globl code16_end
+
+CS_SEG = 0xf
+
+code16_start:
+
+ .globl code16_func1
+
+ /* basic test */
+code16_func1 = . - code16_start
+ mov $1, %eax
+ data32 lret
+
+/* test push/pop in 16 bit mode */
+ .globl code16_func2
+code16_func2 = . - code16_start
+ xor %eax, %eax
+ mov $0x12345678, %ebx
+ movl %esp, %ecx
+ push %bx
+ subl %esp, %ecx
+ pop %ax
+ data32 lret
+
+/* test various jmp opcodes */
+ .globl code16_func3
+code16_func3 = . - code16_start
+ jmp 1f
+ nop
+1:
+ mov $4, %eax
+ mov $0x12345678, %ebx
+ xor %bx, %bx
+ jz 2f
+ add $2, %ax
+2:
+
+ call myfunc
+
+ lcall $CS_SEG, $(myfunc2 - code16_start)
+
+ ljmp $CS_SEG, $(myjmp1 - code16_start)
+myjmp1_next:
+
+ cs lcall *myfunc2_addr - code16_start
+
+ cs ljmp *myjmp2_addr - code16_start
+myjmp2_next:
+
+ data32 lret
+
+myfunc2_addr:
+ .short myfunc2 - code16_start
+ .short CS_SEG
+
+myjmp2_addr:
+ .short myjmp2 - code16_start
+ .short CS_SEG
+
+myjmp1:
+ add $8, %ax
+ jmp myjmp1_next
+
+myjmp2:
+ add $16, %ax
+ jmp myjmp2_next
+
+myfunc:
+ add $1, %ax
+ ret
+
+myfunc2:
+ add $4, %ax
+ lret
+
+
+code16_end: