mirror of https://gitee.com/openkylin/linux.git
33 lines
584 B
C
33 lines
584 B
C
#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/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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int
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mcrfs(u32 *ccr, u32 crfD, u32 crfS)
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{
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u32 value, clear;
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#ifdef DEBUG
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printk("%s: %p (%08x) %d %d\n", __func__, ccr, *ccr, crfD, crfS);
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#endif
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clear = 15 << ((7 - crfS) << 2);
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if (!crfS)
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clear = 0x90000000;
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value = (__FPU_FPSCR >> ((7 - crfS) << 2)) & 15;
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__FPU_FPSCR &= ~(clear);
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*ccr &= ~(15 << ((7 - crfD) << 2));
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*ccr |= (value << ((7 - crfD) << 2));
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#ifdef DEBUG
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printk("CR: %08x\n", __func__, *ccr);
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#endif
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return 0;
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}
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