1 #include <linux/types.h> 2 #include <linux/errno.h> 3 #include <asm/uaccess.h> 4 5 #include <asm/sfp-machine.h> 6 #include <math-emu/soft-fp.h> 7 #include <math-emu/double.h> 8 9 int 10 fcmpo(u32 *ccr, int crfD, void *frA, void *frB) 11 { 12 FP_DECL_D(A); 13 FP_DECL_D(B); 14 FP_DECL_EX; 15 int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) }; 16 long cmp; 17 18 #ifdef DEBUG 19 printk("%s: %p (%08x) %d %p %p\n", __func__, ccr, *ccr, crfD, frA, frB); 20 #endif 21 22 FP_UNPACK_DP(A, frA); 23 FP_UNPACK_DP(B, frB); 24 25 #ifdef DEBUG 26 printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); 27 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); 28 #endif 29 30 if (A_c == FP_CLS_NAN || B_c == FP_CLS_NAN) 31 FP_SET_EXCEPTION(EFLAG_VXVC); 32 33 FP_CMP_D(cmp, A, B, 2); 34 cmp = code[(cmp + 1) & 3]; 35 36 __FPU_FPSCR &= ~(0x1f000); 37 __FPU_FPSCR |= (cmp << 12); 38 39 *ccr &= ~(15 << ((7 - crfD) << 2)); 40 *ccr |= (cmp << ((7 - crfD) << 2)); 41 42 #ifdef DEBUG 43 printk("CR: %08x\n", *ccr); 44 #endif 45 46 return FP_CUR_EXCEPTIONS; 47 } 48