kvm-unit-test: fix cpuid test

If cpuid is called with function value greater than max supported one
max supported value is used instead and index parameter is honored. That
is why we need to initial

kvm-unit-test: fix cpuid test

If cpuid is called with function value greater than max supported one
max supported value is used instead and index parameter is honored. That
is why we need to initialize index to same value in the test to get
same result from both cpuid invocations.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>

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realmode: test SAHF instruction

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>

realmode: test RETF imm

Signed-off-by: Bruce Rogers <brogers@suse.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

kvm-unit-tests: Test case of emulating multibyte NOP

Add multibyte (1 to 4-bytes) NOPL test case to kvm-unit-tests
x86/realmode.c. This test only consist of 16-bit NOPL insn,
other test cases (5 to

kvm-unit-tests: Test case of emulating multibyte NOP

Add multibyte (1 to 4-bytes) NOPL test case to kvm-unit-tests
x86/realmode.c. This test only consist of 16-bit NOPL insn,
other test cases (5 to 9-bytes NOPL) should be placed
in x86/emulator.c.

Signed-off-by: Arthur Chunqi Li <yzt356@gmail.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>

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realmode: print to serial port

The realmode test is still printing to the old debug port at 0xf1.
Use the serial port instead.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb

realmode: print to serial port

The realmode test is still printing to the old debug port at 0xf1.
Use the serial port instead.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>

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realmode: restore DF at exit from exec_in_big_real_mode

Some tests fail if DF=1. Restore it directly after executing the test,
do not do it "magically" in print_serial.

Signed-off-by: Paolo Bonzin

realmode: restore DF at exit from exec_in_big_real_mode

Some tests fail if DF=1. Restore it directly after executing the test,
do not do it "magically" in print_serial.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>

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realmode: test AAM, XLAT, SALC

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>

add test for "mov[zs]x %ah, ..." instruction

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

test fninit/fnstsw/fnstcw instructions emulation

Add test for fninit/fnstsw/fnstcw instructions emulation. This exact
code sequence is executed by Linux kernel during boot and sometimes gets
emulate

test fninit/fnstsw/fnstcw instructions emulation

Add test for fninit/fnstsw/fnstcw instructions emulation. This exact
code sequence is executed by Linux kernel during boot and sometimes gets
emulated by KVM.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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test aad instruction

Add test for aad instruction emulation.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

realmode: test that stack operations ignore the high word of %esp if ss.b is set

Signed-off-by: Avi Kivity <avi@redhat.com>

realmode: test bswap

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

realmode: test movsx/movzx

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

realmode: test lahf

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

realmode: test sigt/sgdt

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

realmode: test for ss base used with esp/ebp base register

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

realmode: test cpuid

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

Add realmode test for CALL FAR IMM instruction

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

Add realmode test for jcxz instruction

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

Add realmode test for LDS/LES/LFS/LGS/LSS instruction

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

realmode: fold register comparison test into report()

This makes is easier to test registers.

Signed-off-by: Avi Kivity <avi@redhat.com>

realmode: fix esp in long jump test

esp needs to point at the end of the stack, or it will corrupt memory.

Signed-off-by: Avi Kivity <avi@redhat.com>

realmode: make inregs, outregs global

This removes a lot of parameter passing.

Signed-off-by: Avi Kivity <avi@redhat.com>

Introduce report() function for realmode test to simplify result reporting

Signed-off-by: Avi Kivity <avi@redhat.com>

Simplify exec_in_big_real_mode() calling convention

Instead of passing both the address and size of the instruction to be
executed, pass the address of a descriptor containing both.

The label denot

Simplify exec_in_big_real_mode() calling convention

Instead of passing both the address and size of the instruction to be
executed, pass the address of a descriptor containing both.

The label denoting the end of the instruction is eliminated, reducing
aliases which confuse objdump.

Signed-off-by: Avi Kivity <avi@redhat.com>

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