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src/os_cpu/solaris_sparc/vm/solaris_sparc.s@a61af66fc99e (annotated)

src/os_cpu/solaris_sparc/vm/solaris_sparc.s

Sat, 01 Dec 2007 00:00:00 +0000

author

duke

date

Sat, 01 Dec 2007 00:00:00 +0000

changeset 435

a61af66fc99e

child 548

ba764ed4b6f2

permissions

-rw-r--r--

Initial load

duke@435	1	!!
duke@435	2	!! Copyright 2005-2007 Sun Microsystems, Inc. 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	!!
duke@435	19	!! Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	!! CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	!! have any questions.
duke@435	22	!!
duke@435	23
duke@435	24	!! Prototype: int SafeFetch32 (int * adr, int ErrValue)
duke@435	25	!! The "ld" at Fetch32 is potentially faulting instruction.
duke@435	26	!! If the instruction traps the trap handler will arrange
duke@435	27	!! for control to resume at Fetch32Resume.
duke@435	28	!! By convention with the trap handler we ensure there is a non-CTI
duke@435	29	!! instruction in the trap shadow.
duke@435	30	!!
duke@435	31	!! The reader might be tempted to move this service to .il.
duke@435	32	!! Don't. Sun's CC back-end reads and optimize code emitted
duke@435	33	!! by the .il "call", in some cases optimizing the code, completely eliding it,
duke@435	34	!! or by moving the code from the "call site".
duke@435	35
duke@435	36
duke@435	37	.globl SafeFetch32
duke@435	38	.align 32
duke@435	39	.global Fetch32PFI, Fetch32Resume
duke@435	40	SafeFetch32:
duke@435	41	mov %o0, %g1
duke@435	42	mov %o1, %o0
duke@435	43	Fetch32PFI:
duke@435	44	ld [%g1], %o0 !! <-- Potentially faulting instruction
duke@435	45	Fetch32Resume:
duke@435	46	nop
duke@435	47	retl
duke@435	48	nop
duke@435	49
duke@435	50	.globl SafeFetchN
duke@435	51	.align 32
duke@435	52	.globl FetchNPFI, FetchNResume
duke@435	53	SafeFetchN:
duke@435	54	mov %o0, %g1
duke@435	55	mov %o1, %o0
duke@435	56	FetchNPFI:
duke@435	57	ldn [%g1], %o0
duke@435	58	FetchNResume:
duke@435	59	nop
duke@435	60	retl
duke@435	61	nop
duke@435	62
duke@435	63	!! Possibilities:
duke@435	64	!! -- membar
duke@435	65	!! -- CAS (SP + BIAS, G0, G0)
duke@435	66	!! -- wr %g0, %asi
duke@435	67
duke@435	68	.global SpinPause
duke@435	69	.align 32
duke@435	70	SpinPause:
duke@435	71	retl
duke@435	72	mov %g0, %o0
duke@435	73
duke@435	74
duke@435	75
duke@435	76	.globl _Copy_conjoint_jlongs_atomic
duke@435	77	.align 32
duke@435	78	.global _Copy_conjoint_jlongs_atomic
duke@435	79	_Copy_conjoint_jlongs_atomic:
duke@435	80	cmp %o0, %o1
duke@435	81	bleu 4f
duke@435	82	sll %o2, 3, %o4
duke@435	83	ba 2f
duke@435	84	1:
duke@435	85	subcc %o4, 8, %o4
duke@435	86	std %o2, [%o1]
duke@435	87	add %o0, 8, %o0
duke@435	88	add %o1, 8, %o1
duke@435	89	2:
duke@435	90	bge,a 1b
duke@435	91	ldd [%o0], %o2
duke@435	92	ba 5f
duke@435	93	nop
duke@435	94	3:
duke@435	95	std %o2, [%o1+%o4]
duke@435	96	4:
duke@435	97	subcc %o4, 8, %o4
duke@435	98	bge,a 3b
duke@435	99	ldd [%o0+%o4], %o2
duke@435	100	5:
duke@435	101	retl
duke@435	102	nop
duke@435	103
duke@435	104
duke@435	105
duke@435	106	.globl _raw_thread_id
duke@435	107	.align 32
duke@435	108	_raw_thread_id:
duke@435	109	retl
duke@435	110	mov %g7, %o0
duke@435	111
duke@435	112
duke@435	113	.globl _flush_reg_windows
duke@435	114	.align 32
duke@435	115	_flush_reg_windows:
duke@435	116	ta 0x03
duke@435	117	retl
duke@435	118	mov %fp, %o0
duke@435	119
duke@435	120