8016697: Use stubs to implement safefetch
Summary: Implement Safefetch as stub routines. This reduces compiler and os dependencies.
Reviewed-by: twisti, kvn
!!
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!! DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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!! This code is free software; you can redistribute it and/or modify it
!! under the terms of the GNU General Public License version 2 only, as
!! published by the Free Software Foundation.
!!
!! This code is distributed in the hope that it will be useful, but WITHOUT
!! ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
!! FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
!! version 2 for more details (a copy is included in the LICENSE file that
!! accompanied this code).
!!
!! You should have received a copy of the GNU General Public License version
!! 2 along with this work; if not, write to the Free Software Foundation,
!! Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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!! questions.
!!
!! Possibilities:
!! -- membar
!! -- CAS (SP + BIAS, G0, G0)
!! -- wr %g0, %asi
.global SpinPause
.align 32
SpinPause:
retl
mov %g0, %o0
.globl _Copy_conjoint_jlongs_atomic
.align 32
.global _Copy_conjoint_jlongs_atomic
_Copy_conjoint_jlongs_atomic:
cmp %o0, %o1
bleu 4f
sll %o2, 3, %o4
ba 2f
1:
subcc %o4, 8, %o4
std %o2, [%o1]
add %o0, 8, %o0
add %o1, 8, %o1
2:
bge,a 1b
ldd [%o0], %o2
ba 5f
nop
3:
std %o2, [%o1+%o4]
4:
subcc %o4, 8, %o4
bge,a 3b
ldd [%o0+%o4], %o2
5:
retl
nop
.globl _raw_thread_id
.align 32
_raw_thread_id:
.register %g7, #scratch
retl
mov %g7, %o0
.globl _flush_reg_windows
.align 32
_flush_reg_windows:
ta 0x03
retl
mov %fp, %o0