This adds a test for int n (opcode 0xcd) instruction in the real mode
test harness
Signed-off-by: Mohammed Gamal <m.gamal005@xxxxxxxxx>
---
x86/realmode.c | 20 ++++++++++++++++++++
1 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/x86/realmode.c b/x86/realmode.c
index bb161ac..7534da5 100644
--- a/x86/realmode.c
+++ b/x86/realmode.c
@@ -947,6 +947,25 @@ void test_iret()
print_serial("iret Test 4: PASS\n");
}
+void test_int()
+{
+ struct regs inregs = { 0 }, outregs;
+
+ *(u32 *)(0x11 * 4) = 0x1000; /* Store a pointer to address 0x1000 in IDT entry 0x11 */
+ *(u8 *)(0x1000) = 0xcf; /* 0x1000 contains an IRET instruction */
+
+ MK_INSN(int11, "int $0x11\n\t");
+
+ exec_in_big_real_mode(&inregs, &outregs,
+ insn_int11,
+ insn_int11_end - insn_int11);
+
+ if (!regs_equal(&inregs, &outregs, 0))
+ print_serial("int Test 1: FAIL\n");
+ else
+ print_serial("int Test 1: PASS\n");
+}
+
void realmode_start(void)
{
test_null();
@@ -969,6 +988,7 @@ void realmode_start(void)
test_long_jmp();
test_xchg();
test_iret();
+ test_int();
exit(0);
}
--
1.7.0.4
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