| 1 | /* |
| 2 | * Test the LCBB instruction. |
| 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 5 | */ |
| 6 | #include <assert.h> |
| 7 | #include <stdlib.h> |
| 8 | |
| 9 | static inline __attribute__((__always_inline__)) void |
| 10 | lcbb(long *r1, void *dxb2, int m3, int *cc) |
| 11 | { |
| 12 | asm("lcbb %[r1],%[dxb2],%[m3]\n" |
| 13 | "ipm %[cc]" |
| 14 | : [r1] "+r" (*r1), [cc] "=r" (*cc) |
| 15 | : [dxb2] "R" (*(char *)dxb2), [m3] "i" (m3) |
| 16 | : "cc"); |
| 17 | *cc = (*cc >> 28) & 3; |
| 18 | } |
| 19 | |
| 20 | static char buf[0x1000] __attribute__((aligned(0x1000))); |
| 21 | |
| 22 | static inline __attribute__((__always_inline__)) void |
| 23 | test_lcbb(void *p, int m3, int exp_r1, int exp_cc) |
| 24 | { |
| 25 | long r1 = 0xfedcba9876543210; |
| 26 | int cc; |
| 27 | |
| 28 | lcbb(&r1, p, m3, &cc); |
| 29 | assert(r1 == (0xfedcba9800000000 | exp_r1)); |
| 30 | assert(cc == exp_cc); |
| 31 | } |
| 32 | |
| 33 | int main(void) |
| 34 | { |
| 35 | test_lcbb(&buf[0], 0, 16, 0); |
| 36 | test_lcbb(&buf[63], 0, 1, 3); |
| 37 | test_lcbb(&buf[0], 1, 16, 0); |
| 38 | test_lcbb(&buf[127], 1, 1, 3); |
| 39 | test_lcbb(&buf[0], 2, 16, 0); |
| 40 | test_lcbb(&buf[255], 2, 1, 3); |
| 41 | test_lcbb(&buf[0], 3, 16, 0); |
| 42 | test_lcbb(&buf[511], 3, 1, 3); |
| 43 | test_lcbb(&buf[0], 4, 16, 0); |
| 44 | test_lcbb(&buf[1023], 4, 1, 3); |
| 45 | test_lcbb(&buf[0], 5, 16, 0); |
| 46 | test_lcbb(&buf[2047], 5, 1, 3); |
| 47 | test_lcbb(&buf[0], 6, 16, 0); |
| 48 | test_lcbb(&buf[4095], 6, 1, 3); |
| 49 | |
| 50 | return EXIT_SUCCESS; |
| 51 | } |