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/*
* Test the VSTRS instruction.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <assert.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "vx.h"
static inline __attribute__((__always_inline__)) int
vstrs(S390Vector *v1, const S390Vector *v2, const S390Vector *v3,
const S390Vector *v4, const uint8_t m5, const uint8_t m6)
{
int cc;
asm("vstrs %[v1],%[v2],%[v3],%[v4],%[m5],%[m6]\n"
"ipm %[cc]"
: [v1] "=v" (v1->v)
, [cc] "=r" (cc)
: [v2] "v" (v2->v)
, [v3] "v" (v3->v)
, [v4] "v" (v4->v)
, [m5] "i" (m5)
, [m6] "i" (m6)
: "cc");
return (cc >> 28) & 3;
}
static void test_ignored_match(void)
{
S390Vector v1;
S390Vector v2 = {.d[0] = 0x222000205e410000ULL, .d[1] = 0};
S390Vector v3 = {.d[0] = 0x205e410000000000ULL, .d[1] = 0};
S390Vector v4 = {.d[0] = 3, .d[1] = 0};
assert(vstrs(&v1, &v2, &v3, &v4, 0, 2) == 1);
assert(v1.d[0] == 16);
assert(v1.d[1] == 0);
}
static void test_empty_needle(void)
{
S390Vector v1;
S390Vector v2 = {.d[0] = 0x5300000000000000ULL, .d[1] = 0};
S390Vector v3 = {.d[0] = 0, .d[1] = 0};
S390Vector v4 = {.d[0] = 0, .d[1] = 0};
assert(vstrs(&v1, &v2, &v3, &v4, 0, 0) == 2);
assert(v1.d[0] == 0);
assert(v1.d[1] == 0);
}
static void test_max_length(void)
{
S390Vector v1;
S390Vector v2 = {.d[0] = 0x1122334455667700ULL, .d[1] = 0};
S390Vector v3 = {.d[0] = 0, .d[1] = 0};
S390Vector v4 = {.d[0] = 16, .d[1] = 0};
assert(vstrs(&v1, &v2, &v3, &v4, 0, 0) == 3);
assert(v1.d[0] == 7);
assert(v1.d[1] == 0);
}
static void test_no_match(void)
{
S390Vector v1;
S390Vector v2 = {.d[0] = 0xffffff000fffff00ULL, .d[1] = 0x82b};
S390Vector v3 = {.d[0] = 0xfffffffeffffffffULL,
.d[1] = 0xffffffff00000000ULL};
S390Vector v4 = {.d[0] = 11, .d[1] = 0};
assert(vstrs(&v1, &v2, &v3, &v4, 0, 2) == 1);
assert(v1.d[0] == 16);
assert(v1.d[1] == 0);
}
int main(void)
{
test_ignored_match();
test_empty_needle();
test_max_length();
test_no_match();
return EXIT_SUCCESS;
}
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