| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | #include <linux/types.h> |
| 3 | #include <linux/errno.h> |
| 4 | #include <linux/uaccess.h> |
| 5 | |
| 6 | #include <asm/sfp-machine.h> |
| 7 | #include <math-emu/soft-fp.h> |
| 8 | #include <math-emu/double.h> |
| 9 | |
| 10 | int |
| 11 | fcmpu(u32 *ccr, int crfD, void *frA, void *frB) |
| 12 | { |
| 13 | FP_DECL_D(A); |
| 14 | FP_DECL_D(B); |
| 15 | FP_DECL_EX; |
| 16 | int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) }; |
| 17 | long cmp; |
| 18 | |
| 19 | #ifdef DEBUG |
| 20 | printk("%s: %p (%08x) %d %p %p\n", __func__, ccr, *ccr, crfD, frA, frB); |
| 21 | #endif |
| 22 | |
| 23 | FP_UNPACK_DP(A, frA); |
| 24 | FP_UNPACK_DP(B, frB); |
| 25 | |
| 26 | #ifdef DEBUG |
| 27 | printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); |
| 28 | printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); |
| 29 | #endif |
| 30 | |
| 31 | FP_CMP_D(cmp, A, B, 2); |
| 32 | cmp = code[(cmp + 1) & 3]; |
| 33 | |
| 34 | __FPU_FPSCR &= ~(0x1f000); |
| 35 | __FPU_FPSCR |= (cmp << 12); |
| 36 | |
| 37 | *ccr &= ~(15 << ((7 - crfD) << 2)); |
| 38 | *ccr |= (cmp << ((7 - crfD) << 2)); |
| 39 | |
| 40 | #ifdef DEBUG |
| 41 | printk("CR: %08x\n", *ccr); |
| 42 | #endif |
| 43 | |
| 44 | return 0; |
| 45 | } |