mirror of https://gitee.com/openkylin/linux.git
47 lines
907 B
C
47 lines
907 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 "soft-fp.h"
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#include "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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int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) };
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long cmp;
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int ret = 0;
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#ifdef DEBUG
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printk("%s: %p (%08x) %d %p %p\n", __FUNCTION__, ccr, *ccr, crfD, frA, frB);
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#endif
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__FP_UNPACK_D(A, frA);
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__FP_UNPACK_D(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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ret |= 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 ret;
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}
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