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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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39 lines
693 B
C
39 lines
693 B
C
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#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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fsel(u32 *frD, void *frA, u32 *frB, u32 *frC)
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{
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FP_DECL_D(A);
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#ifdef DEBUG
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printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frA, frB, frC);
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#endif
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__FP_UNPACK_D(A, frA);
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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: %08x %08x\n", frB[0], frB[1]);
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printk("C: %08x %08x\n", frC[0], frC[1]);
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#endif
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if (A_c == FP_CLS_NAN || (A_c != FP_CLS_ZERO && A_s)) {
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frD[0] = frB[0];
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frD[1] = frB[1];
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} else {
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frD[0] = frC[0];
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frD[1] = frC[1];
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}
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#ifdef DEBUG
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printk("D: %08x.%08x\n", frD[0], frD[1]);
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#endif
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return 0;
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}
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