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src/os_cpu/solaris_x86/vm/atomic_solaris_x86.inline.hpp@1e9a9d2e6509 (annotated)

src/os_cpu/solaris_x86/vm/atomic_solaris_x86.inline.hpp

Thu, 21 Oct 2010 11:55:10 -0700

author

never

date

Thu, 21 Oct 2010 11:55:10 -0700

changeset 2262

1e9a9d2e6509

parent 1907

c18cbe5936b8

child 2314

f95d63e2154a

permissions

-rw-r--r--

6970683: improvements to hs_err output
Reviewed-by: kvn, jrose, dholmes, coleenp

duke@435	1	/*
trims@1907	2	* Copyright (c) 1999, 2009, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
duke@435	26	inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
duke@435	27	inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
duke@435	28
duke@435	29
duke@435	30	inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
duke@435	31	inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
duke@435	32
duke@435	33	inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
duke@435	34	inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
duke@435	35	inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
duke@435	36	inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
duke@435	37	inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
duke@435	38
duke@435	39	inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); }
duke@435	40	inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); }
duke@435	41	inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); }
duke@435	42
duke@435	43	inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); }
duke@435	44	inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); }
duke@435	45	inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); }
duke@435	46
duke@435	47	// For Sun Studio - implementation is in solaris_x86_[32/64].il.
duke@435	48	// For gcc - implementation is just below.
duke@435	49
jcoomes@1902	50	// The lock prefix can be omitted for certain instructions on uniprocessors; to
jcoomes@1902	51	// facilitate this, os::is_MP() is passed as an additional argument. 64-bit
jcoomes@1902	52	// processors are assumed to be multi-threaded and/or multi-core, so the extra
jcoomes@1902	53	// argument is unnecessary.
jcoomes@1902	54	#ifndef _LP64
jcoomes@1902	55	#define IS_MP_DECL() , int is_mp
jcoomes@1902	56	#define IS_MP_ARG() , (int) os::is_MP()
jcoomes@1902	57	#else
jcoomes@1902	58	#define IS_MP_DECL()
jcoomes@1902	59	#define IS_MP_ARG()
jcoomes@1902	60	#endif // _LP64
jcoomes@1902	61
jcoomes@1902	62	extern "C" {
jcoomes@1902	63	jint _Atomic_add(jint add_value, volatile jint* dest IS_MP_DECL());
jcoomes@1902	64	jint _Atomic_xchg(jint exchange_value, volatile jint* dest);
jcoomes@1902	65	jint _Atomic_cmpxchg(jint exchange_value, volatile jint* dest,
jcoomes@1902	66	jint compare_value IS_MP_DECL());
jcoomes@1902	67	jlong _Atomic_cmpxchg_long(jlong exchange_value, volatile jlong* dest,
jcoomes@1902	68	jlong compare_value IS_MP_DECL());
jcoomes@1902	69	}
duke@435	70
duke@435	71	inline jint Atomic::add (jint add_value, volatile jint* dest) {
jcoomes@1902	72	return _Atomic_add(add_value, dest IS_MP_ARG());
jcoomes@1902	73	}
jcoomes@1902	74
jcoomes@1902	75	inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
jcoomes@1902	76	return _Atomic_xchg(exchange_value, dest);
duke@435	77	}
duke@435	78
duke@435	79	inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
jcoomes@1902	80	return _Atomic_cmpxchg(exchange_value, dest, compare_value IS_MP_ARG());
duke@435	81	}
duke@435	82
duke@435	83	inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
jcoomes@1902	84	return _Atomic_cmpxchg_long(exchange_value, dest, compare_value IS_MP_ARG());
duke@435	85	}
duke@435	86
duke@435	87
duke@435	88	#ifdef AMD64
duke@435	89	inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
duke@435	90	inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
jcoomes@1902	91	extern "C" jlong _Atomic_add_long(jlong add_value, volatile jlong* dest);
duke@435	92	extern "C" jlong _Atomic_xchg_long(jlong exchange_value, volatile jlong* dest);
duke@435	93
duke@435	94	inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
jcoomes@1902	95	return (intptr_t)_Atomic_add_long((jlong)add_value, (volatile jlong*)dest);
duke@435	96	}
duke@435	97
duke@435	98	inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
jcoomes@1902	99	return (void*)_Atomic_add_long((jlong)add_value, (volatile jlong*)dest);
duke@435	100	}
duke@435	101
duke@435	102	inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
duke@435	103	return (intptr_t)_Atomic_xchg_long((jlong)exchange_value, (volatile jlong*)dest);
duke@435	104	}
duke@435	105
duke@435	106	inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
duke@435	107	return (void*)_Atomic_xchg_long((jlong)exchange_value, (volatile jlong*)dest);
duke@435	108	}
duke@435	109
duke@435	110	inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
jcoomes@1902	111	return (intptr_t)_Atomic_cmpxchg_long((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
duke@435	112	}
duke@435	113
duke@435	114	inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
jcoomes@1902	115	return (void*)_Atomic_cmpxchg_long((jlong)exchange_value, (volatile jlong*)dest, (jlong)compare_value);
duke@435	116	}
duke@435	117
kvn@1329	118	inline jlong Atomic::load(volatile jlong* src) { return *src; }
kvn@1329	119
duke@435	120	#else // !AMD64
duke@435	121
duke@435	122	inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
duke@435	123	return (intptr_t)add((jint)add_value, (volatile jint*)dest);
duke@435	124	}
duke@435	125
duke@435	126	inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
duke@435	127	return (void*)add((jint)add_value, (volatile jint*)dest);
duke@435	128	}
duke@435	129
duke@435	130	inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
duke@435	131	return (intptr_t)xchg((jint)exchange_value, (volatile jint*)dest);
duke@435	132	}
duke@435	133
duke@435	134	inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
duke@435	135	return (void*)xchg((jint)exchange_value, (volatile jint*)dest);
duke@435	136	}
duke@435	137
duke@435	138	inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
duke@435	139	return (intptr_t)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
duke@435	140	}
duke@435	141
duke@435	142	inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
duke@435	143	return (void*)cmpxchg((jint)exchange_value, (volatile jint*)dest, (jint)compare_value);
duke@435	144	}
kvn@1329	145
kvn@1329	146	extern "C" void _Atomic_load_long(volatile jlong* src, volatile jlong* dst);
kvn@1329	147
kvn@1329	148	inline jlong Atomic::load(volatile jlong* src) {
kvn@1329	149	volatile jlong dest;
kvn@1329	150	_Atomic_load_long(src, &dest);
kvn@1329	151	return dest;
kvn@1329	152	}
kvn@1329	153
duke@435	154	#endif // AMD64
duke@435	155
duke@435	156	#ifdef _GNU_SOURCE
duke@435	157	// Add a lock prefix to an instruction on an MP machine
duke@435	158	#define LOCK_IF_MP(mp) "cmp $0, " #mp "; je 1f; lock; 1: "
duke@435	159
duke@435	160	extern "C" {
duke@435	161	inline jint _Atomic_add(jint add_value, volatile jint* dest, int mp) {
duke@435	162	jint addend = add_value;
duke@435	163	__asm__ volatile ( LOCK_IF_MP(%3) "xaddl %0,(%2)"
duke@435	164	: "=r" (addend)
duke@435	165	: "0" (addend), "r" (dest), "r" (mp)
duke@435	166	: "cc", "memory");
duke@435	167	return addend + add_value;
duke@435	168	}
duke@435	169
duke@435	170	#ifdef AMD64
duke@435	171	inline jlong _Atomic_add_long(jlong add_value, volatile jlong* dest, int mp) {
duke@435	172	intptr_t addend = add_value;
duke@435	173	__asm__ __volatile__ (LOCK_IF_MP(%3) "xaddq %0,(%2)"
duke@435	174	: "=r" (addend)
duke@435	175	: "0" (addend), "r" (dest), "r" (mp)
duke@435	176	: "cc", "memory");
duke@435	177	return addend + add_value;
duke@435	178	}
duke@435	179
duke@435	180	inline jlong _Atomic_xchg_long(jlong exchange_value, volatile jlong* dest) {
duke@435	181	__asm__ __volatile__ ("xchgq (%2),%0"
duke@435	182	: "=r" (exchange_value)
duke@435	183	: "0" (exchange_value), "r" (dest)
duke@435	184	: "memory");
duke@435	185	return exchange_value;
duke@435	186	}
duke@435	187
duke@435	188	#endif // AMD64
duke@435	189
duke@435	190	inline jint _Atomic_xchg(jint exchange_value, volatile jint* dest) {
duke@435	191	__asm__ __volatile__ ("xchgl (%2),%0"
duke@435	192	: "=r" (exchange_value)
duke@435	193	: "0" (exchange_value), "r" (dest)
duke@435	194	: "memory");
duke@435	195	return exchange_value;
duke@435	196	}
duke@435	197
duke@435	198	inline jint _Atomic_cmpxchg(jint exchange_value, volatile jint* dest, jint compare_value, int mp) {
duke@435	199	__asm__ volatile (LOCK_IF_MP(%4) "cmpxchgl %1,(%3)"
duke@435	200	: "=a" (exchange_value)
duke@435	201	: "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
duke@435	202	: "cc", "memory");
duke@435	203	return exchange_value;
duke@435	204	}
duke@435	205
duke@435	206	// This is the interface to the atomic instruction in solaris_i486.s.
duke@435	207	jlong _Atomic_cmpxchg_long_gcc(jlong exchange_value, volatile jlong* dest, jlong compare_value, int mp);
duke@435	208
duke@435	209	inline jlong _Atomic_cmpxchg_long(jlong exchange_value, volatile jlong* dest, jlong compare_value, int mp) {
duke@435	210	#ifdef AMD64
duke@435	211	__asm__ __volatile__ (LOCK_IF_MP(%4) "cmpxchgq %1,(%3)"
duke@435	212	: "=a" (exchange_value)
duke@435	213	: "r" (exchange_value), "a" (compare_value), "r" (dest), "r" (mp)
duke@435	214	: "cc", "memory");
duke@435	215	return exchange_value;
duke@435	216	#else
duke@435	217	return _Atomic_cmpxchg_long_gcc(exchange_value, dest, compare_value, os::is_MP());
duke@435	218
duke@435	219	#if 0
duke@435	220	// The code below does not work presumably because of the bug in gcc
duke@435	221	// The error message says:
duke@435	222	// can't find a register in class BREG while reloading asm
duke@435	223	// However I want to save this code and later replace _Atomic_cmpxchg_long_gcc
duke@435	224	// with such inline asm code:
duke@435	225
duke@435	226	volatile jlong_accessor evl, cvl, rv;
duke@435	227	evl.long_value = exchange_value;
duke@435	228	cvl.long_value = compare_value;
duke@435	229	int mp = os::is_MP();
duke@435	230
duke@435	231	__asm__ volatile ("cmp $0, %%esi\n\t"
duke@435	232	"je 1f \n\t"
duke@435	233	"lock\n\t"
duke@435	234	"1: cmpxchg8b (%%edi)\n\t"
duke@435	235	: "=a"(cvl.words[0]), "=d"(cvl.words[1])
duke@435	236	: "a"(cvl.words[0]), "d"(cvl.words[1]),
duke@435	237	"b"(evl.words[0]), "c"(evl.words[1]),
duke@435	238	"D"(dest), "S"(mp)
duke@435	239	: "cc", "memory");
duke@435	240	return cvl.long_value;
duke@435	241	#endif // if 0
duke@435	242	#endif // AMD64
duke@435	243	}
duke@435	244	}
duke@435	245	#undef LOCK_IF_MP
duke@435	246
duke@435	247	#endif // _GNU_SOURCE