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tests/tcg/s390x: Add a test for the vistr instruction

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This test can be used to verify that the change in the previous
commit is indeed fixing the problem with the M3 vs. M4 field
mixup.

Message-Id: <20221012182755.1014853-4-thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Thomas Huth 2022-10-12 20:27:55 +02:00
parent f7d81a351d
commit 9e3eb3b29a
2 changed files with 49 additions and 0 deletions
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4
tests/tcg/s390x/Makefile.target
View file

@ -25,6 +25,10 @@ TESTS+=signals-s390x
TESTS+=branch-relative-long
TESTS+=noexec
Z13_TESTS=vistr
$(Z13_TESTS): CFLAGS+=-march=z13 -O2
TESTS+=$(Z13_TESTS)
ifneq ($(CROSS_CC_HAS_Z14),)
Z14_TESTS=vfminmax
vfminmax: LDFLAGS+=-lm

45
tests/tcg/s390x/vistr.c Normal file
View file

@ -0,0 +1,45 @@
/*
* Test the VECTOR ISOLATE STRING (vistr) instruction
*/
#include <stdint.h>
#include <stdio.h>
#include "vx.h"
static inline void vistr(S390Vector *v1, S390Vector *v2,
const uint8_t m3, const uint8_t m5)
{
asm volatile("vistr %[v1], %[v2], %[m3], %[m5]\n"
: [v1] "=v" (v1->v)
: [v2] "v" (v2->v)
, [m3] "i" (m3)
, [m5] "i" (m5)
: "cc");
}
int main(int argc, char *argv[])
{
S390Vector vd = {};
S390Vector vs16 = {
.h[0] = 0x1234, .h[1] = 0x0056, .h[2] = 0x7800, .h[3] = 0x0000,
.h[4] = 0x0078, .h[5] = 0x0000, .h[6] = 0x6543, .h[7] = 0x2100
};
S390Vector vs32 = {
.w[0] = 0x12340000, .w[1] = 0x78654300,
.w[2] = 0x0, .w[3] = 0x12,
};
vistr(&vd, &vs16, 1, 0);
if (vd.h[0] != 0x1234 || vd.h[1] != 0x0056 || vd.h[2] != 0x7800 ||
vd.h[3] || vd.h[4] || vd.h[5] || vd.h[6] || vd.h[7]) {
puts("ERROR: vitrh failed!");
return 1;
}
vistr(&vd, &vs32, 2, 0);
if (vd.w[0] != 0x12340000 || vd.w[1] != 0x78654300 || vd.w[2] || vd.w[3]) {
puts("ERROR: vitrf failed!");
return 1;
}
return 0;
}