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File: [Development] / linux-2.6-xfs / arch / powerpc / math-emu / lfs.c (download)

Revision 1.2, Mon Aug 4 17:03:13 2008 UTC (9 years, 2 months ago) by lachlan.longdrop.melbourne.sgi.com
Branch: MAIN
CVS Tags: HEAD
Changes since 1.1: +1 -1 lines 

Merge up to 2.6.26
Merge of 2.6.x-xfs-melb:linux:31804b by kenmcd.

#include <linux/types.h>
#include <linux/errno.h>
#include <asm/uaccess.h>

#include "soft-fp.h"
#include "double.h"
#include "single.h"

int
lfs(void *frD, void *ea)
{
	FP_DECL_D(R);
	FP_DECL_S(A);
	float f;

#ifdef DEBUG
	printk("%s: D %p, ea %p\n", __func__, frD, ea);
#endif

	if (copy_from_user(&f, ea, sizeof(float)))
		return -EFAULT;

	__FP_UNPACK_S(A, &f);

#ifdef DEBUG
	printk("A: %ld %lu %ld (%ld) [%08lx]\n", A_s, A_f, A_e, A_c,
	       *(unsigned long *)&f);
#endif

	FP_CONV(D, S, 2, 1, R, A);

#ifdef DEBUG
	printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
#endif

	return __FP_PACK_D(frD, R);
}