litmus-rt.git - The LITMUS^RT kernel.

The LITMUS^RT kernel.

Bjoern Brandenburg

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author	Uwe Kleine-Koenig <ukleinek@informatik.uni-freiburg.de>	2008-09-24 07:39:21 -0400
committer	Jean Delvare <khali@mahadeva.delvare>	2008-09-24 07:39:21 -0400
commit	4ebb52d34fac2904e541ccfa8e32126db836fa92 (patch)
tree	38ca11136004f87e0f0a4d853d08a83581f71e80 /lib/kasprintf.c
parent	fb478da5ba69ecf40729ae8ab37ca406b1e5be48 (diff)

i2c-powermac: Fix section for probe and remove functions

__devexit for i2c_powermac_probe is obviously wrong. In the definition of struct platform_driver i2c_powermac_driver the remove function i2c_powermac_remove is wrapped in __devexit_p, so it should be defined using __devexit. Signed-off-by: Uwe Kleine-Koenig <ukleinek@informatik.uni-freiburg.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>

Diffstat (limited to 'lib/kasprintf.c')

0 files changed, 0 insertions, 0 deletions

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	.file	"wm_sqrt.S"
/*---------------------------------------------------------------------------+
 |  wm_sqrt.S                                                                |
 |                                                                           |
 | Fixed point arithmetic square root evaluation.                            |
 |                                                                           |
 | Copyright (C) 1992,1993,1995,1997                                         |
 |                       W. Metzenthen, 22 Parker St, Ormond, Vic 3163,      |
 |                       Australia.  E-mail billm@suburbia.net               |
 |                                                                           |
 | Call from C as:                                                           |
 |    int wm_sqrt(FPU_REG *n, unsigned int control_word)                     |
 |                                                                           |
 +---------------------------------------------------------------------------*/

/*---------------------------------------------------------------------------+
 |  wm_sqrt(FPU_REG *n, unsigned int control_word)                           |
 |    returns the square root of n in n.                                     |
 |                                                                           |
 |  Use Newton's method to compute the square root of a number, which must   |
 |  be in the range  [1.0 .. 4.0),  to 64 bits accuracy.                     |
 |  Does not check the sign or tag of the argument.                          |
 |  Sets the exponent, but not the sign or tag of the result.                |
 |                                                                           |
 |  The guess is kept in %esi:%edi                                           |
 +---------------------------------------------------------------------------*/

#include "exception.h"
#include "fpu_emu.h"


#ifndef NON_REENTRANT_FPU
/*	Local storage on the stack: */
#define FPU_accum_3	-4(%ebp)	/* ms word */
#define FPU_accum_2	-8(%ebp)
#define FPU_accum_1	-12(%ebp)
#define FPU_accum_0	-16(%ebp)

/*
 * The de-normalised argument:
 *                  sq_2                  sq_1              sq_0
 *        b b b b b b b ... b b b   b b b .... b b b   b 0 0 0 ... 0
 *           ^ binary point here
 */
#define FPU_fsqrt_arg_2	-20(%ebp)	/* ms word */
#define FPU_fsqrt_arg_1	-24(%ebp)
#define FPU_fsqrt_arg_0	-28(%ebp)	/* ls word, at most the ms bit is set */

#else
/*	Local storage in a static area: */
.data
	.align 4,0
FPU_accum_3:
	.long	0		/* ms word */
FPU_accum_2:
	.long	0
FPU_accum_1:
	.long	0
FPU_accum_0:
	.long	0

/* The de-normalised argument:
                    sq_2                  sq_1              sq_0
          b b b b b b b ... b b b   b b b .... b b b   b 0 0 0 ... 0
             ^ binary point here
 */
FPU_fsqrt_arg_2:
	.long	0		/* ms word */
FPU_fsqrt_arg_1:
	.long	0
FPU_fsqrt_arg_0:
	.long	0		/* ls word, at most the ms bit is set */
#endif /* NON_REENTRANT_FPU */ 


.text
ENTRY(wm_sqrt)
	pushl	%ebp
	movl	%esp,%ebp
#ifndef NON_REENTRANT_FPU
	subl	$28,%esp
#endif /* NON_REENTRANT_FPU */
	pushl	%esi
	pushl	%edi
	pushl	%ebx

	movl	PARAM1,%esi

	movl	SIGH(%esi),%eax
	movl	SIGL(%esi),%ecx
	xorl	%edx,%edx

/* We use a rough linear estimate for the first guess.. */

	cmpw	EXP_BIAS,EXP(%esi)
	jnz	sqrt_arg_ge_2

	shrl	$1,%eax			/* arg is in the range  [1.0 .. 2.0) */
	rcrl	$1,%ecx
	rcrl	$1,%edx

sqrt_arg_ge_2:
/* From here on, n is never accessed directly again until it is
   replaced by the answer. */

	movl	%eax,FPU_fsqrt_arg_2		/* ms word of n */
	movl	%ecx,FPU_fsqrt_arg_1
	movl	%edx,FPU_fsqrt_arg_0

/* Make a linear first estimate */
	shrl	$1,%eax
	addl	$0x40000000,%eax
	movl	$0xaaaaaaaa,%ecx
	mull	%ecx


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