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tests/tcg/s390x: Add C(G)HRL test

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Test COMPARE HALFWORD RELATIVE LONG instructions.
Test that the bytes following the second operand do not affect the
instruction.
Test the sign extension performed on the second operand.

Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230310114157.3024170-3-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Nina Schoetterl-Glausch 2023-03-10 12:41:57 +01:00 • committed by Thomas Huth
parent 54fce97cfc
commit 410791228c
2 changed files with 81 additions and 0 deletions
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1
tests/tcg/s390x/Makefile.target
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@ -28,6 +28,7 @@ TESTS+=div
TESTS+=clst
TESTS+=long-double
TESTS+=cdsg
TESTS+=chrl
cdsg: CFLAGS+=-pthread
cdsg: LDFLAGS+=-pthread

80
tests/tcg/s390x/chrl.c Normal file
View file

@ -0,0 +1,80 @@
#include <stdlib.h>
#include <assert.h>
#include <stdint.h>
static void test_chrl(void)
{
uint32_t program_mask, cc;
asm volatile (
".pushsection .rodata\n"
"0:\n\t"
".short 1, 0x8000\n\t"
".popsection\n\t"
"chrl %[r], 0b\n\t"
"ipm %[program_mask]\n"
: [program_mask] "=r" (program_mask)
: [r] "r" (1)
);
cc = program_mask >> 28;
assert(!cc);
asm volatile (
".pushsection .rodata\n"
"0:\n\t"
".short -1, 0x8000\n\t"
".popsection\n\t"
"chrl %[r], 0b\n\t"
"ipm %[program_mask]\n"
: [program_mask] "=r" (program_mask)
: [r] "r" (-1)
);
cc = program_mask >> 28;
assert(!cc);
}
static void test_cghrl(void)
{
uint32_t program_mask, cc;
asm volatile (
".pushsection .rodata\n"
"0:\n\t"
".short 1, 0x8000, 0, 0\n\t"
".popsection\n\t"
"cghrl %[r], 0b\n\t"
"ipm %[program_mask]\n"
: [program_mask] "=r" (program_mask)
: [r] "r" (1L)
);
cc = program_mask >> 28;
assert(!cc);
asm volatile (
".pushsection .rodata\n"
"0:\n\t"
".short -1, 0x8000, 0, 0\n\t"
".popsection\n\t"
"cghrl %[r], 0b\n\t"
"ipm %[program_mask]\n"
: [program_mask] "=r" (program_mask)
: [r] "r" (-1L)
);
cc = program_mask >> 28;
assert(!cc);
}
int main(void)
{
test_chrl();
test_cghrl();
return EXIT_SUCCESS;
}