xref: /illumos-gate/usr/src/lib/libc/inc/base_inlines.h (revision 6a3e8e86)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef	_BASE_INLINES_H
28 #define	_BASE_INLINES_H
29 
30 #include <sys/ccompile.h>
31 #include <sys/types.h>
32 
33 #if !defined(__lint) && defined(__GNUC__)
34 
35 /*
36  * This file is intended to contain gcc-style inline assembly that corresponds
37  * to base.il for all architectures.  At the moment these inlines exist only
38  * for sparc and sparcv9 and these functions are implemented in C for x86.
39  * They should be inlined here for gcc if a new x86 base.il is created.
40  */
41 
42 #if defined(__sparc)
43 extern __GNU_INLINE double
__mul_set(double x,double y,int * pe)44 __mul_set(double x, double y, int *pe)
45 {
46 	double __result;
47 	uint32_t __fsr;
48 	uint32_t *__addr = &__fsr;
49 
50 	__asm__ __volatile__(
51 	    "fmuld %4, %5, %0\n\t"
52 	    "st %%fsr, %3\n\t"
53 	    "ld %3, %2\n\t"
54 	    "and %2, 1, %2\n\t"
55 	    "st %2, %1"
56 	    : "=&e" (__result), "=m" (*pe), "=r" (__fsr), "=m" (*__addr)
57 	    : "e" (x), "e" (y));
58 	return (__result);
59 }
60 #endif	/* __sparc */
61 
62 #if defined(__sparc)
63 extern __GNU_INLINE double
__div_set(double x,double y,int * pe)64 __div_set(double x, double y, int *pe)
65 {
66 	double __result;
67 	uint32_t __fsr;
68 	uint32_t *__addr = &__fsr;
69 
70 	__asm__ __volatile__(
71 	    "fdivd %4, %5, %0\n\t"
72 	    "st %%fsr, %3\n\t"
73 	    "ld %3, %2\n\t"
74 	    "and %2, 1, %2\n\t"
75 	    "st %2, %1"
76 	    : "=&e" (__result), "=m" (*pe), "=r" (__fsr), "=m" (*__addr)
77 	    : "e" (x), "e" (y));
78 	return (__result);
79 }
80 #endif	/* __sparc */
81 
82 #if defined(__sparc)
83 extern __GNU_INLINE double
__dabs(double * x)84 __dabs(double *x)
85 {
86 	double __result;
87 
88 	__asm__ __volatile__(
89 #if defined(__sparcv9)
90 	    "fabsd %1, %0"
91 #else
92 	    "fabss %1, %0"
93 #endif
94 	    : "=e" (__result)
95 	    : "0" (*x));
96 	return (__result);
97 }
98 #endif	/* __sparc */
99 
100 #if defined(__sparc)
101 extern  __GNU_INLINE void
__get_ieee_flags(__ieee_flags_type * b)102 __get_ieee_flags(__ieee_flags_type *b)
103 {
104 	uint32_t __fsr;
105 
106 	/*
107 	 * It's preferable to let the assembler insert the nops as
108 	 * needed; however, it warns as it does so.  Add them here for now.
109 	 */
110 	__asm__ __volatile__(
111 	    "st %%fsr, %0\n\t"
112 	    "st %%g0, %1\n\t"
113 	    "ld %1, %%fsr\n\t"
114 	    "nop; nop; nop"
115 	    : "=m" (*b), "=m" (__fsr));
116 }
117 #endif	/* __sparc */
118 
119 #if defined(__sparc)
120 extern __GNU_INLINE void
__set_ieee_flags(__ieee_flags_type * b)121 __set_ieee_flags(__ieee_flags_type *b)
122 {
123 	/*
124 	 * It's preferable to let the assembler insert the nops as
125 	 * needed; however, it warns as it does so.  Add them here for now.
126 	 */
127 	__asm__ __volatile__(
128 	    "ld %0, %%fsr\n\t"
129 	    "nop; nop; nop"
130 	    : /* no outputs */
131 	    : "m" (*b));
132 }
133 #endif	/* __sparc */
134 
135 #endif	/* !__lint && __GNUC__ */
136 
137 #endif	/* _BASE_INLINES_H */
138