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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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033b8a333c
FP_DECL_EX is already used, so ret is redundant. And FP_SET_EXCEPTION will add status into return value. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
48 lines
972 B
C
48 lines
972 B
C
#include <linux/types.h>
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#include <linux/errno.h>
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#include <asm/uaccess.h>
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#include <asm/sfp-machine.h>
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#include <math-emu/soft-fp.h>
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#include <math-emu/double.h>
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int
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fcmpo(u32 *ccr, int crfD, void *frA, void *frB)
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{
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FP_DECL_D(A);
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FP_DECL_D(B);
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FP_DECL_EX;
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int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) };
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long cmp;
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#ifdef DEBUG
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printk("%s: %p (%08x) %d %p %p\n", __func__, ccr, *ccr, crfD, frA, frB);
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#endif
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FP_UNPACK_DP(A, frA);
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FP_UNPACK_DP(B, frB);
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#ifdef DEBUG
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printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
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printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
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#endif
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if (A_c == FP_CLS_NAN || B_c == FP_CLS_NAN)
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FP_SET_EXCEPTION(EFLAG_VXVC);
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FP_CMP_D(cmp, A, B, 2);
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cmp = code[(cmp + 1) & 3];
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__FPU_FPSCR &= ~(0x1f000);
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__FPU_FPSCR |= (cmp << 12);
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*ccr &= ~(15 << ((7 - crfD) << 2));
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*ccr |= (cmp << ((7 - crfD) << 2));
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#ifdef DEBUG
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printk("CR: %08x\n", *ccr);
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#endif
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return FP_CUR_EXCEPTIONS;
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}
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