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tests/tcg/s390x: Test CONVERT TO BINARY
Check the CVB's, CVBY's, and CVBG's corner cases. Co-developed-by: Pavel Zbitskiy <pavel.zbitskiy@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Tested-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-ID: <20240205205830.6425-5-iii@linux.ibm.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
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/* | ||
* Test the CONVERT TO BINARY instruction. | ||
* | ||
* SPDX-License-Identifier: GPL-2.0-or-later | ||
*/ | ||
#include <assert.h> | ||
#include <signal.h> | ||
#include <stdint.h> | ||
#include <stdlib.h> | ||
#include <string.h> | ||
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static int signum; | ||
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static void signal_handler(int n) | ||
{ | ||
signum = n; | ||
} | ||
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#define FAIL 0x1234567887654321 | ||
#define OK32(x) (0x1234567800000000 | (uint32_t)(x)) | ||
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static int64_t cvb(uint64_t x) | ||
{ | ||
int64_t ret = FAIL; | ||
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signum = -1; | ||
asm("cvb %[ret],%[x]" : [ret] "+r" (ret) : [x] "R" (x)); | ||
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return ret; | ||
} | ||
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static int64_t cvby(uint64_t x) | ||
{ | ||
int64_t ret = FAIL; | ||
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signum = -1; | ||
asm("cvby %[ret],%[x]" : [ret] "+r" (ret) : [x] "T" (x)); | ||
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return ret; | ||
} | ||
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static int64_t cvbg(__uint128_t x) | ||
{ | ||
int64_t ret = FAIL; | ||
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signum = -1; | ||
asm("cvbg %[ret],%[x]" : [ret] "+r" (ret) : [x] "T" (x)); | ||
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return ret; | ||
} | ||
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int main(void) | ||
{ | ||
__uint128_t m = (((__uint128_t)0x9223372036854775) << 16) | 0x8070; | ||
struct sigaction act; | ||
int err; | ||
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memset(&act, 0, sizeof(act)); | ||
act.sa_handler = signal_handler; | ||
err = sigaction(SIGFPE, &act, NULL); | ||
assert(err == 0); | ||
err = sigaction(SIGILL, &act, NULL); | ||
assert(err == 0); | ||
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assert(cvb(0xc) == OK32(0) && signum == -1); | ||
assert(cvb(0x1c) == OK32(1) && signum == -1); | ||
assert(cvb(0x25594c) == OK32(25594) && signum == -1); | ||
assert(cvb(0x1d) == OK32(-1) && signum == -1); | ||
assert(cvb(0x2147483647c) == OK32(0x7fffffff) && signum == -1); | ||
assert(cvb(0x2147483648d) == OK32(-0x80000000) && signum == -1); | ||
assert(cvb(0x7) == FAIL && signum == SIGILL); | ||
assert(cvb(0x2147483648c) == OK32(0x80000000) && signum == SIGFPE); | ||
assert(cvb(0x3000000000c) == OK32(0xb2d05e00) && signum == SIGFPE); | ||
assert(cvb(0x2147483649d) == OK32(0x7fffffff) && signum == SIGFPE); | ||
assert(cvb(0x3000000000d) == OK32(0x4d2fa200) && signum == SIGFPE); | ||
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assert(cvby(0xc) == OK32(0)); | ||
assert(cvby(0x1c) == OK32(1)); | ||
assert(cvby(0x25594c) == OK32(25594)); | ||
assert(cvby(0x1d) == OK32(-1)); | ||
assert(cvby(0x2147483647c) == OK32(0x7fffffff)); | ||
assert(cvby(0x2147483648d) == OK32(-0x80000000)); | ||
assert(cvby(0x7) == FAIL && signum == SIGILL); | ||
assert(cvby(0x2147483648c) == OK32(0x80000000) && signum == SIGFPE); | ||
assert(cvby(0x3000000000c) == OK32(0xb2d05e00) && signum == SIGFPE); | ||
assert(cvby(0x2147483649d) == OK32(0x7fffffff) && signum == SIGFPE); | ||
assert(cvby(0x3000000000d) == OK32(0x4d2fa200) && signum == SIGFPE); | ||
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assert(cvbg(0xc) == 0); | ||
assert(cvbg(0x1c) == 1); | ||
assert(cvbg(0x25594c) == 25594); | ||
assert(cvbg(0x1d) == -1); | ||
assert(cvbg(m + 0xc) == 0x7fffffffffffffff); | ||
assert(cvbg(m + 0x1d) == -0x8000000000000000); | ||
assert(cvbg(0x7) == FAIL && signum == SIGILL); | ||
assert(cvbg(m + 0x1c) == FAIL && signum == SIGFPE); | ||
assert(cvbg(m + 0x2d) == FAIL && signum == SIGFPE); | ||
assert(cvbg(((__uint128_t)1 << 80) + 0xc) == FAIL && signum == SIGFPE); | ||
assert(cvbg(((__uint128_t)1 << 80) + 0xd) == FAIL && signum == SIGFPE); | ||
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return EXIT_SUCCESS; | ||
} |