| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | #include <linux/types.h> |
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| 3 | #include <linux/errno.h> |
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| 4 | #include <linux/uaccess.h> |
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| 5 | |
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| 6 | #include <asm/sfp-machine.h> |
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| 7 | #include <math-emu/soft-fp.h> |
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| 8 | #include <math-emu/double.h> |
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| 9 | |
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| 10 | int |
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| 11 | fcmpu(u32 *ccr, int crfD, void *frA, void *frB) |
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| 12 | { |
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| 13 | FP_DECL_D(A); |
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| 14 | FP_DECL_D(B); |
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| 15 | FP_DECL_EX; |
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| 16 | int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) }; |
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| 17 | long cmp; |
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| 18 | |
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| 19 | #ifdef DEBUG |
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| 20 | printk("%s: %p (%08x) %d %p %p\n" , __func__, ccr, *ccr, crfD, frA, frB); |
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| 21 | #endif |
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| 22 | |
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| 23 | FP_UNPACK_DP(A, frA); |
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| 24 | FP_UNPACK_DP(B, frB); |
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| 25 | |
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| 26 | #ifdef DEBUG |
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| 27 | printk("A: %ld %lu %lu %ld (%ld)\n" , A_s, A_f1, A_f0, A_e, A_c); |
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| 28 | printk("B: %ld %lu %lu %ld (%ld)\n" , B_s, B_f1, B_f0, B_e, B_c); |
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| 29 | #endif |
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| 30 | |
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| 31 | FP_CMP_D(cmp, A, B, 2); |
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| 32 | cmp = code[(cmp + 1) & 3]; |
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| 33 | |
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| 34 | __FPU_FPSCR &= ~(0x1f000); |
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| 35 | __FPU_FPSCR |= (cmp << 12); |
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| 36 | |
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| 37 | *ccr &= ~(15 << ((7 - crfD) << 2)); |
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| 38 | *ccr |= (cmp << ((7 - crfD) << 2)); |
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| 39 | |
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| 40 | #ifdef DEBUG |
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| 41 | printk("CR: %08x\n" , *ccr); |
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| 42 | #endif |
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| 43 | |
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| 44 | return 0; |
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| 45 | } |
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| 46 | |
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