| 1 | /* |
| 2 | * Test the CONVERT TO BINARY instruction. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 5 | */ |
| 6 | #include <assert.h> |
| 7 | #include <signal.h> |
| 8 | #include <stdint.h> |
| 9 | #include <stdlib.h> |
| 10 | #include <string.h> |
| 11 | |
| 12 | static int signum; |
| 13 | |
| 14 | static void signal_handler(int n) |
| 15 | { |
| 16 | signum = n; |
| 17 | } |
| 18 | |
| 19 | #define FAIL 0x1234567887654321 |
| 20 | #define OK32(x) (0x1234567800000000 | (uint32_t)(x)) |
| 21 | |
| 22 | static int64_t cvb(uint64_t x) |
| 23 | { |
| 24 | int64_t ret = FAIL; |
| 25 | |
| 26 | signum = -1; |
| 27 | asm("cvb %[ret],%[x]" : [ret] "+r" (ret) : [x] "R" (x)); |
| 28 | |
| 29 | return ret; |
| 30 | } |
| 31 | |
| 32 | static int64_t cvby(uint64_t x) |
| 33 | { |
| 34 | int64_t ret = FAIL; |
| 35 | |
| 36 | signum = -1; |
| 37 | asm("cvby %[ret],%[x]" : [ret] "+r" (ret) : [x] "T" (x)); |
| 38 | |
| 39 | return ret; |
| 40 | } |
| 41 | |
| 42 | static int64_t cvbg(__uint128_t x) |
| 43 | { |
| 44 | int64_t ret = FAIL; |
| 45 | |
| 46 | signum = -1; |
| 47 | asm("cvbg %[ret],%[x]" : [ret] "+r" (ret) : [x] "T" (x)); |
| 48 | |
| 49 | return ret; |
| 50 | } |
| 51 | |
| 52 | int main(void) |
| 53 | { |
| 54 | __uint128_t m = (((__uint128_t)0x9223372036854775) << 16) | 0x8070; |
| 55 | struct sigaction act; |
| 56 | int err; |
| 57 | |
| 58 | memset(&act, 0, sizeof(act)); |
| 59 | act.sa_handler = signal_handler; |
| 60 | err = sigaction(SIGFPE, &act, NULL); |
| 61 | assert(err == 0); |
| 62 | err = sigaction(SIGILL, &act, NULL); |
| 63 | assert(err == 0); |
| 64 | |
| 65 | assert(cvb(0xc) == OK32(0) && signum == -1); |
| 66 | assert(cvb(0x1c) == OK32(1) && signum == -1); |
| 67 | assert(cvb(0x25594c) == OK32(25594) && signum == -1); |
| 68 | assert(cvb(0x1d) == OK32(-1) && signum == -1); |
| 69 | assert(cvb(0x2147483647c) == OK32(0x7fffffff) && signum == -1); |
| 70 | assert(cvb(0x2147483648d) == OK32(-0x80000000) && signum == -1); |
| 71 | assert(cvb(0x7) == FAIL && signum == SIGILL); |
| 72 | assert(cvb(0x2147483648c) == OK32(0x80000000) && signum == SIGFPE); |
| 73 | assert(cvb(0x3000000000c) == OK32(0xb2d05e00) && signum == SIGFPE); |
| 74 | assert(cvb(0x2147483649d) == OK32(0x7fffffff) && signum == SIGFPE); |
| 75 | assert(cvb(0x3000000000d) == OK32(0x4d2fa200) && signum == SIGFPE); |
| 76 | |
| 77 | assert(cvby(0xc) == OK32(0)); |
| 78 | assert(cvby(0x1c) == OK32(1)); |
| 79 | assert(cvby(0x25594c) == OK32(25594)); |
| 80 | assert(cvby(0x1d) == OK32(-1)); |
| 81 | assert(cvby(0x2147483647c) == OK32(0x7fffffff)); |
| 82 | assert(cvby(0x2147483648d) == OK32(-0x80000000)); |
| 83 | assert(cvby(0x7) == FAIL && signum == SIGILL); |
| 84 | assert(cvby(0x2147483648c) == OK32(0x80000000) && signum == SIGFPE); |
| 85 | assert(cvby(0x3000000000c) == OK32(0xb2d05e00) && signum == SIGFPE); |
| 86 | assert(cvby(0x2147483649d) == OK32(0x7fffffff) && signum == SIGFPE); |
| 87 | assert(cvby(0x3000000000d) == OK32(0x4d2fa200) && signum == SIGFPE); |
| 88 | |
| 89 | assert(cvbg(0xc) == 0); |
| 90 | assert(cvbg(0x1c) == 1); |
| 91 | assert(cvbg(0x25594c) == 25594); |
| 92 | assert(cvbg(0x1d) == -1); |
| 93 | assert(cvbg(m + 0xc) == 0x7fffffffffffffff); |
| 94 | assert(cvbg(m + 0x1d) == -0x8000000000000000); |
| 95 | assert(cvbg(0x7) == FAIL && signum == SIGILL); |
| 96 | assert(cvbg(m + 0x1c) == FAIL && signum == SIGFPE); |
| 97 | assert(cvbg(m + 0x2d) == FAIL && signum == SIGFPE); |
| 98 | assert(cvbg(((__uint128_t)1 << 80) + 0xc) == FAIL && signum == SIGFPE); |
| 99 | assert(cvbg(((__uint128_t)1 << 80) + 0xd) == FAIL && signum == SIGFPE); |
| 100 | |
| 101 | return EXIT_SUCCESS; |
| 102 | } |