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