| #include <stdio.h> |
| #include <stdint.h> |
| #include <inttypes.h> |
| #include <assert.h> |
| |
| #define WORD_A 0xAAAAAAAAUL |
| #define WORD_B 0xBBBBBBBBUL |
| #define WORD_C 0xCCCCCCCCUL |
| #define WORD_D 0xDDDDDDDDUL |
| |
| #define DWORD_HI (WORD_A << 32 | WORD_B) |
| #define DWORD_LO (WORD_C << 32 | WORD_D) |
| |
| #define TEST(HI, LO, UIM, RES) \ |
| do { \ |
| union { \ |
| uint64_t u; \ |
| double f; \ |
| } h = { .u = HI }, l = { .u = LO }; \ |
| /* \ |
| * Use a pair of FPRs to load the VSR avoiding insns \ |
| * newer than xxswapd. \ |
| */ \ |
| asm("xxmrghd 32, %0, %1\n\t" \ |
| "xxspltw 32, 32, %2\n\t" \ |
| "xxmrghd %0, 32, %0\n\t" \ |
| "xxswapd 32, 32\n\t" \ |
| "xxmrghd %1, 32, %1\n\t" \ |
| : "+f" (h.f), "+f" (l.f) \ |
| : "i" (UIM) \ |
| : "v0"); \ |
| printf("xxspltw(0x%016" PRIx64 "%016" PRIx64 ", %d) =" \ |
| " %016" PRIx64 "%016" PRIx64 "\n", HI, LO, UIM, \ |
| h.u, l.u); \ |
| assert(h.u == (RES)); \ |
| assert(l.u == (RES)); \ |
| } while (0) |
| |
| int main(void) |
| { |
| TEST(DWORD_HI, DWORD_LO, 0, WORD_A << 32 | WORD_A); |
| TEST(DWORD_HI, DWORD_LO, 1, WORD_B << 32 | WORD_B); |
| TEST(DWORD_HI, DWORD_LO, 2, WORD_C << 32 | WORD_C); |
| TEST(DWORD_HI, DWORD_LO, 3, WORD_D << 32 | WORD_D); |
| return 0; |
| } |
