[COMMIT master] test: Add test for sub acc,imm

[Avi Kivity]

From: Mohammed Gamal <m.gamal...@gmail.com>

Adds tests fot sub acc, imm

Signed-off-by: Mohammed Gamal <m.gamal...@gmail.com>
Signed-off-by: Marcelo Tosatti <mtosa...@redhat.com>

diff --git a/kvm/user/test/x86/realmode.c b/kvm/user/test/x86/realmode.c
index bc4ed97..41e2aea 100644
--- a/kvm/user/test/x86/realmode.c
+++ b/kvm/user/test/x86/realmode.c
@@ -307,6 +307,49 @@ void test_mov_imm(void)
                print_serial("mov test 5: PASS\n");
 }
 
+void test_sub_imm(void)
+{
+       struct regs inregs = { 0 }, outregs;
+       MK_INSN(sub_r32_imm_1, "mov $1234567890, %eax\n\t" "sub $10, %eax\n\t");
+       MK_INSN(sub_r16_imm_1, "mov $1234, %ax\n\t" "sub $10, %ax\n\t");
+       MK_INSN(sub_r8_imm_1, "mov $0x12, %ah\n\t" "sub $0x10, %ah\n\t");
+       MK_INSN(sub_r8_imm_2, "mov $0x34, %al\n\t" "sub $0x10, %al\n\t");
+
+       exec_in_big_real_mode(&inregs, &outregs,
+                             insn_sub_r16_imm_1,
+                             insn_sub_r16_imm_1_end - insn_sub_r16_imm_1);
+       if (!regs_equal(&inregs, &outregs, R_AX) || outregs.eax != 1224)
+               print_serial("sub test 1: FAIL\n");
+       else
+               print_serial("sub test 1: PASS\n");
+
+       /* test mov $imm, %eax */
+       exec_in_big_real_mode(&inregs, &outregs,
+                             insn_sub_r32_imm_1,
+                             insn_sub_r32_imm_1_end - insn_sub_r32_imm_1);
+       if (!regs_equal(&inregs, &outregs, R_AX) || outregs.eax != 1234567880)
+               print_serial("sub test 2: FAIL\n");
+       else
+               print_serial("sub test 2: PASS\n");
+
+       /* test mov $imm, %al/%ah */
+       exec_in_big_real_mode(&inregs, &outregs,
+                             insn_sub_r8_imm_1,
+                             insn_sub_r8_imm_1_end - insn_sub_r8_imm_1);
+       if (!regs_equal(&inregs, &outregs, R_AX) || outregs.eax != 0x0200)
+               print_serial("sub test 3: FAIL\n");
+       else
+               print_serial("sub test 3: PASS\n");
+
+       exec_in_big_real_mode(&inregs, &outregs,
+                             insn_sub_r8_imm_2,
+                             insn_sub_r8_imm_2_end - insn_sub_r8_imm_2);
+       if (!regs_equal(&inregs, &outregs, R_AX) || outregs.eax != 0x24)
+               print_serial("sub test 4: FAIL\n");
+       else
+               print_serial("sub test 4: PASS\n");
+}
+
 void test_cmp_imm(void)
 {
        struct regs inregs = { 0 }, outregs;
@@ -742,6 +785,7 @@ void realmode_start(void)
        test_mov_imm();
        test_cmp_imm();
        test_add_imm();
+       test_sub_imm();
        test_io();
        test_eflags_insn();
        test_jcc_short();
--
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