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| // SPDX-License-Identifier: GPL-2.0
| #include <linux/types.h>
| #include <linux/errno.h>
| #include <linux/uaccess.h>
|
| #include <asm/sfp-machine.h>
| #include <math-emu/soft-fp.h>
| #include <math-emu/double.h>
|
| int
| fcmpu(u32 *ccr, int crfD, void *frA, void *frB)
| {
| FP_DECL_D(A);
| FP_DECL_D(B);
| FP_DECL_EX;
| int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) };
| long cmp;
|
| #ifdef DEBUG
| printk("%s: %p (%08x) %d %p %p\n", __func__, ccr, *ccr, crfD, frA, frB);
| #endif
|
| FP_UNPACK_DP(A, frA);
| FP_UNPACK_DP(B, frB);
|
| #ifdef DEBUG
| printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
| printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
| #endif
|
| FP_CMP_D(cmp, A, B, 2);
| cmp = code[(cmp + 1) & 3];
|
| __FPU_FPSCR &= ~(0x1f000);
| __FPU_FPSCR |= (cmp << 12);
|
| *ccr &= ~(15 << ((7 - crfD) << 2));
| *ccr |= (cmp << ((7 - crfD) << 2));
|
| #ifdef DEBUG
| printk("CR: %08x\n", *ccr);
| #endif
|
| return 0;
| }
|
|
