| Jim Cownie | 5e8470a | 2013-09-27 10:38:44 +0000 | [diff] [blame] | 1 | /* |
| 2 | * z_Windows_NT-586_util.c -- platform specific routines. |
| 3 | * $Revision: 42181 $ |
| 4 | * $Date: 2013-03-26 15:04:45 -0500 (Tue, 26 Mar 2013) $ |
| 5 | */ |
| 6 | |
| 7 | |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
| 10 | // The LLVM Compiler Infrastructure |
| 11 | // |
| 12 | // This file is dual licensed under the MIT and the University of Illinois Open |
| 13 | // Source Licenses. See LICENSE.txt for details. |
| 14 | // |
| 15 | //===----------------------------------------------------------------------===// |
| 16 | |
| 17 | |
| 18 | #include "kmp.h" |
| 19 | |
| 20 | #if (KMP_ARCH_X86 || KMP_ARCH_X86_64) |
| 21 | /* Only 32-bit "add-exchange" instruction on IA-32 architecture causes us to |
| 22 | * use compare_and_store for these routines |
| 23 | */ |
| 24 | |
| 25 | kmp_int32 |
| 26 | __kmp_test_then_or32( volatile kmp_int32 *p, kmp_int32 d ) |
| 27 | { |
| 28 | kmp_int32 old_value, new_value; |
| 29 | |
| 30 | old_value = TCR_4( *p ); |
| 31 | new_value = old_value | d; |
| 32 | |
| 33 | while ( ! __kmp_compare_and_store32 ( p, old_value, new_value ) ) |
| 34 | { |
| 35 | KMP_CPU_PAUSE(); |
| 36 | old_value = TCR_4( *p ); |
| 37 | new_value = old_value | d; |
| 38 | } |
| 39 | |
| 40 | return old_value; |
| 41 | } |
| 42 | |
| 43 | kmp_int32 |
| 44 | __kmp_test_then_and32( volatile kmp_int32 *p, kmp_int32 d ) |
| 45 | { |
| 46 | kmp_int32 old_value, new_value; |
| 47 | |
| 48 | old_value = TCR_4( *p ); |
| 49 | new_value = old_value & d; |
| 50 | |
| 51 | while ( ! __kmp_compare_and_store32 ( p, old_value, new_value ) ) |
| 52 | { |
| 53 | KMP_CPU_PAUSE(); |
| 54 | old_value = TCR_4( *p ); |
| 55 | new_value = old_value & d; |
| 56 | } |
| 57 | return old_value; |
| 58 | } |
| 59 | |
| 60 | #if KMP_ARCH_X86 |
| 61 | kmp_int64 |
| 62 | __kmp_test_then_add64( volatile kmp_int64 *p, kmp_int64 d ) |
| 63 | { |
| 64 | kmp_int64 old_value, new_value; |
| 65 | |
| 66 | old_value = TCR_8( *p ); |
| 67 | new_value = old_value + d; |
| 68 | while ( ! __kmp_compare_and_store64 ( p, old_value, new_value ) ) |
| 69 | { |
| 70 | KMP_CPU_PAUSE(); |
| 71 | old_value = TCR_8( *p ); |
| 72 | new_value = old_value + d; |
| 73 | } |
| 74 | |
| 75 | return old_value; |
| 76 | } |
| 77 | #endif /* KMP_ARCH_X86 */ |
| 78 | |
| 79 | kmp_int64 |
| 80 | __kmp_test_then_or64( volatile kmp_int64 *p, kmp_int64 d ) |
| 81 | { |
| 82 | kmp_int64 old_value, new_value; |
| 83 | |
| 84 | old_value = TCR_8( *p ); |
| 85 | new_value = old_value | d; |
| 86 | while ( ! __kmp_compare_and_store64 ( p, old_value, new_value ) ) |
| 87 | { |
| 88 | KMP_CPU_PAUSE(); |
| 89 | old_value = TCR_8( *p ); |
| 90 | new_value = old_value | d; |
| 91 | } |
| 92 | |
| 93 | return old_value; |
| 94 | } |
| 95 | |
| 96 | kmp_int64 |
| 97 | __kmp_test_then_and64( volatile kmp_int64 *p, kmp_int64 d ) |
| 98 | { |
| 99 | kmp_int64 old_value, new_value; |
| 100 | |
| 101 | old_value = TCR_8( *p ); |
| 102 | new_value = old_value & d; |
| 103 | while ( ! __kmp_compare_and_store64 ( p, old_value, new_value ) ) |
| 104 | { |
| 105 | KMP_CPU_PAUSE(); |
| 106 | old_value = TCR_8( *p ); |
| 107 | new_value = old_value & d; |
| 108 | } |
| 109 | |
| 110 | return old_value; |
| 111 | } |
| 112 | |
| 113 | #endif /* KMP_ARCH_X86 || KMP_ARCH_X86_64 */ |
| 114 | |
| 115 | /* ------------------------------------------------------------------------ */ |
| 116 | /* ------------------------------------------------------------------------ */ |
| 117 | |