check_swap.c (2426B)
1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <stdint.h> 4 #include "sys.h" 5 #include "crisutils.h" 6 7 #define N 8 8 #define W 4 9 #define B 2 10 #define R 1 11 12 static always_inline int cris_swap(const int mode, int x) 13 { 14 switch (mode) 15 { 16 case N: asm ("swapn\t%0\n" : "+r" (x) : "0" (x)); break; 17 case W: asm ("swapw\t%0\n" : "+r" (x) : "0" (x)); break; 18 case B: asm ("swapb\t%0\n" : "+r" (x) : "0" (x)); break; 19 case R: asm ("swapr\t%0\n" : "+r" (x) : "0" (x)); break; 20 case B|R: asm ("swapbr\t%0\n" : "+r" (x) : "0" (x)); break; 21 case W|R: asm ("swapwr\t%0\n" : "+r" (x) : "0" (x)); break; 22 case W|B: asm ("swapwb\t%0\n" : "+r" (x) : "0" (x)); break; 23 case W|B|R: asm ("swapwbr\t%0\n" : "+r" (x) : "0" (x)); break; 24 case N|R: asm ("swapnr\t%0\n" : "+r" (x) : "0" (x)); break; 25 case N|B: asm ("swapnb\t%0\n" : "+r" (x) : "0" (x)); break; 26 case N|B|R: asm ("swapnbr\t%0\n" : "+r" (x) : "0" (x)); break; 27 case N|W: asm ("swapnw\t%0\n" : "+r" (x) : "0" (x)); break; 28 default: 29 err(); 30 break; 31 } 32 return x; 33 } 34 35 /* Made this a macro to be able to pick up the location of the errors. */ 36 #define verify_swap(mode, val, expected, n, z) \ 37 do { \ 38 int r; \ 39 cris_tst_cc_init(); \ 40 r = cris_swap(mode, val); \ 41 cris_tst_mov_cc(n, z); \ 42 if (r != expected) \ 43 err(); \ 44 } while(0) 45 46 void check_swap(void) 47 { 48 /* Some of these numbers are borrowed from GDB's cris sim 49 testsuite. */ 50 if (cris_swap(N, 0) != 0xffffffff) 51 err(); 52 if (cris_swap(W, 0x12345678) != 0x56781234) 53 err(); 54 if (cris_swap(B, 0x12345678) != 0x34127856) 55 err(); 56 57 verify_swap(R, 0x78134452, 0x1ec8224a, 0, 0); 58 verify_swap(B, 0x78134452, 0x13785244, 0, 0); 59 verify_swap(B|R, 0x78134452, 0xc81e4a22, 1, 0); 60 verify_swap(W, 0x78134452, 0x44527813, 0, 0); 61 verify_swap(W|R, 0x78134452, 0x224a1ec8, 0, 0); 62 verify_swap(W|B|R, 0x78134452, 0x4a22c81e, 0, 0); 63 verify_swap(N, 0x78134452, 0x87ecbbad, 1, 0); 64 verify_swap(N|R, 0x78134452, 0xe137ddb5, 1, 0); 65 verify_swap(N|B, 0x78134452, 0xec87adbb, 1, 0); 66 verify_swap(N|B|R, 0x78134452, 0x37e1b5dd, 0, 0); 67 verify_swap(N|W, 0x78134452, 0xbbad87ec, 1, 0); 68 verify_swap(N|B|R, 0xffffffff, 0, 0, 1); 69 } 70 71 int main(void) 72 { 73 check_swap(); 74 pass(); 75 return 0; 76 }