d4f6e58fcb
Bare tests are standalone assembly tests that don't require linking to any libc and hence can be built with kernel only compilers. The libc tests need a compiler capable of building properly linked userspace binaries. As we don't have such a cross compiler at the moment we won't be building those tests. Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
77 lines
2.4 KiB
C
77 lines
2.4 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include "sys.h"
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#include "crisutils.h"
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#define N 8
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#define W 4
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#define B 2
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#define R 1
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static always_inline int cris_swap(const int mode, int x)
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{
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switch (mode)
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{
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case N: asm ("swapn\t%0\n" : "+r" (x) : "0" (x)); break;
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case W: asm ("swapw\t%0\n" : "+r" (x) : "0" (x)); break;
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case B: asm ("swapb\t%0\n" : "+r" (x) : "0" (x)); break;
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case R: asm ("swapr\t%0\n" : "+r" (x) : "0" (x)); break;
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case B|R: asm ("swapbr\t%0\n" : "+r" (x) : "0" (x)); break;
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case W|R: asm ("swapwr\t%0\n" : "+r" (x) : "0" (x)); break;
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case W|B: asm ("swapwb\t%0\n" : "+r" (x) : "0" (x)); break;
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case W|B|R: asm ("swapwbr\t%0\n" : "+r" (x) : "0" (x)); break;
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case N|R: asm ("swapnr\t%0\n" : "+r" (x) : "0" (x)); break;
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case N|B: asm ("swapnb\t%0\n" : "+r" (x) : "0" (x)); break;
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case N|B|R: asm ("swapnbr\t%0\n" : "+r" (x) : "0" (x)); break;
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case N|W: asm ("swapnw\t%0\n" : "+r" (x) : "0" (x)); break;
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default:
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err();
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break;
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}
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return x;
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}
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/* Made this a macro to be able to pick up the location of the errors. */
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#define verify_swap(mode, val, expected, n, z) \
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do { \
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int r; \
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cris_tst_cc_init(); \
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r = cris_swap(mode, val); \
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cris_tst_mov_cc(n, z); \
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if (r != expected) \
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err(); \
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} while(0)
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void check_swap(void)
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{
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/* Some of these numbers are borrowed from GDB's cris sim
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testsuite. */
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if (cris_swap(N, 0) != 0xffffffff)
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err();
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if (cris_swap(W, 0x12345678) != 0x56781234)
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err();
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if (cris_swap(B, 0x12345678) != 0x34127856)
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err();
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verify_swap(R, 0x78134452, 0x1ec8224a, 0, 0);
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verify_swap(B, 0x78134452, 0x13785244, 0, 0);
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verify_swap(B|R, 0x78134452, 0xc81e4a22, 1, 0);
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verify_swap(W, 0x78134452, 0x44527813, 0, 0);
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verify_swap(W|R, 0x78134452, 0x224a1ec8, 0, 0);
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verify_swap(W|B|R, 0x78134452, 0x4a22c81e, 0, 0);
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verify_swap(N, 0x78134452, 0x87ecbbad, 1, 0);
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verify_swap(N|R, 0x78134452, 0xe137ddb5, 1, 0);
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verify_swap(N|B, 0x78134452, 0xec87adbb, 1, 0);
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verify_swap(N|B|R, 0x78134452, 0x37e1b5dd, 0, 0);
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verify_swap(N|W, 0x78134452, 0xbbad87ec, 1, 0);
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verify_swap(N|B|R, 0xffffffff, 0, 0, 1);
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}
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int main(void)
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{
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check_swap();
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pass();
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return 0;
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}
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