52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
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/*
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* Test the LCBB instruction.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include <assert.h>
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#include <stdlib.h>
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static inline __attribute__((__always_inline__)) void
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lcbb(long *r1, void *dxb2, int m3, int *cc)
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{
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asm("lcbb %[r1],%[dxb2],%[m3]\n"
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"ipm %[cc]"
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: [r1] "+r" (*r1), [cc] "=r" (*cc)
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: [dxb2] "R" (*(char *)dxb2), [m3] "i" (m3)
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: "cc");
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*cc = (*cc >> 28) & 3;
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}
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static char buf[0x1000] __attribute__((aligned(0x1000)));
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static inline __attribute__((__always_inline__)) void
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test_lcbb(void *p, int m3, int exp_r1, int exp_cc)
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{
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long r1 = 0xfedcba9876543210;
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int cc;
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lcbb(&r1, p, m3, &cc);
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assert(r1 == (0xfedcba9800000000 | exp_r1));
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assert(cc == exp_cc);
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}
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int main(void)
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{
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test_lcbb(&buf[0], 0, 16, 0);
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test_lcbb(&buf[63], 0, 1, 3);
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test_lcbb(&buf[0], 1, 16, 0);
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test_lcbb(&buf[127], 1, 1, 3);
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test_lcbb(&buf[0], 2, 16, 0);
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test_lcbb(&buf[255], 2, 1, 3);
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test_lcbb(&buf[0], 3, 16, 0);
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test_lcbb(&buf[511], 3, 1, 3);
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test_lcbb(&buf[0], 4, 16, 0);
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test_lcbb(&buf[1023], 4, 1, 3);
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test_lcbb(&buf[0], 5, 16, 0);
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test_lcbb(&buf[2047], 5, 1, 3);
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test_lcbb(&buf[0], 6, 16, 0);
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test_lcbb(&buf[4095], 6, 1, 3);
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return EXIT_SUCCESS;
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}
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