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6693457: Open-source hotspot linux-sparc support

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Move os_cpu/linux_sparc from closed to open

Reviewed-by: kamg
This commit is contained in:
Paul Hohensee 2008-04-24 15:07:57 -04:00
parent 14e50a456b
commit 81c6ccf729
17 changed files with 1675 additions and 1 deletions
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15
hotspot/make/linux/platform_sparcv9 Normal file
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os_family = linux
arch = sparc
arch_model = sparc
os_arch = linux_sparc
os_arch_model = linux_sparc
lib_arch = sparcv9
compiler = gcc
sysdefs = -DLINUX -D_GNU_SOURCE -DSPARC

51
hotspot/src/os_cpu/linux_sparc/vm/assembler_linux_sparc.cpp Normal file
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/*
* Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
#include "incls/_precompiled.incl"
#include "incls/_assembler_linux_sparc.cpp.incl"
#include <asm-sparc/traps.h>
bool MacroAssembler::needs_explicit_null_check(intptr_t offset) {
// Since the linux kernel resides at the low end of
// user address space, no null pointer check is needed.
return offset < 0 || offset >= 0x100000;
}
void MacroAssembler::read_ccr_trap(Register ccr_save) {
// No implementation
breakpoint_trap();
}
void MacroAssembler::write_ccr_trap(Register ccr_save, Register scratch1, Register scratch2) {
// No implementation
breakpoint_trap();
}
void MacroAssembler::flush_windows_trap() { trap(SP_TRAP_FWIN); }
void MacroAssembler::clean_windows_trap() { trap(SP_TRAP_CWIN); }
// Use software breakpoint trap until we figure out how to do this on Linux
void MacroAssembler::get_psr_trap() { trap(SP_TRAP_SBPT); }
void MacroAssembler::set_psr_trap() { trap(SP_TRAP_SBPT); }

206
hotspot/src/os_cpu/linux_sparc/vm/atomic_linux_sparc.inline.hpp Normal file
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/*
* Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
// Implementation of class atomic
inline void Atomic::store (jbyte store_value, jbyte* dest) { *dest = store_value; }
inline void Atomic::store (jshort store_value, jshort* dest) { *dest = store_value; }
inline void Atomic::store (jint store_value, jint* dest) { *dest = store_value; }
inline void Atomic::store (jlong store_value, jlong* dest) { *dest = store_value; }
inline void Atomic::store_ptr(intptr_t store_value, intptr_t* dest) { *dest = store_value; }
inline void Atomic::store_ptr(void* store_value, void* dest) { *(void**)dest = store_value; }
inline void Atomic::store (jbyte store_value, volatile jbyte* dest) { *dest = store_value; }
inline void Atomic::store (jshort store_value, volatile jshort* dest) { *dest = store_value; }
inline void Atomic::store (jint store_value, volatile jint* dest) { *dest = store_value; }
inline void Atomic::store (jlong store_value, volatile jlong* dest) { *dest = store_value; }
inline void Atomic::store_ptr(intptr_t store_value, volatile intptr_t* dest) { *dest = store_value; }
inline void Atomic::store_ptr(void* store_value, volatile void* dest) { *(void* volatile *)dest = store_value; }
inline void Atomic::inc (volatile jint* dest) { (void)add (1, dest); }
inline void Atomic::inc_ptr(volatile intptr_t* dest) { (void)add_ptr(1, dest); }
inline void Atomic::inc_ptr(volatile void* dest) { (void)add_ptr(1, dest); }
inline void Atomic::dec (volatile jint* dest) { (void)add (-1, dest); }
inline void Atomic::dec_ptr(volatile intptr_t* dest) { (void)add_ptr(-1, dest); }
inline void Atomic::dec_ptr(volatile void* dest) { (void)add_ptr(-1, dest); }
inline jint Atomic::add (jint add_value, volatile jint* dest) {
intptr_t rv;
__asm__ volatile(
"1: \n\t"
" ld [%2], %%o2\n\t"
" add %1, %%o2, %%o3\n\t"
" cas [%2], %%o2, %%o3\n\t"
" cmp %%o2, %%o3\n\t"
" bne 1b\n\t"
" nop\n\t"
" add %1, %%o2, %0\n\t"
: "=r" (rv)
: "r" (add_value), "r" (dest)
: "memory", "o2", "o3");
return rv;
}
inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
intptr_t rv;
#ifdef _LP64
__asm__ volatile(
"1: \n\t"
" ldx [%2], %%o2\n\t"
" add %0, %%o2, %%o3\n\t"
" casx [%2], %%o2, %%o3\n\t"
" cmp %%o2, %%o3\n\t"
" bne %%xcc, 1b\n\t"
" nop\n\t"
" add %0, %%o2, %0\n\t"
: "=r" (rv)
: "r" (add_value), "r" (dest)
: "memory", "o2", "o3");
#else
__asm__ volatile(
"1: \n\t"
" ld [%2], %%o2\n\t"
" add %1, %%o2, %%o3\n\t"
" cas [%2], %%o2, %%o3\n\t"
" cmp %%o2, %%o3\n\t"
" bne 1b\n\t"
" nop\n\t"
" add %1, %%o2, %0\n\t"
: "=r" (rv)
: "r" (add_value), "r" (dest)
: "memory", "o2", "o3");
#endif // _LP64
return rv;
}
inline void* Atomic::add_ptr(intptr_t add_value, volatile void* dest) {
return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest);
}
inline jint Atomic::xchg (jint exchange_value, volatile jint* dest) {
intptr_t rv = exchange_value;
__asm__ volatile(
" swap [%2],%1\n\t"
: "=r" (rv)
: "0" (exchange_value) /* we use same register as for return value */, "r" (dest)
: "memory");
return rv;
}
inline intptr_t Atomic::xchg_ptr(intptr_t exchange_value, volatile intptr_t* dest) {
intptr_t rv = exchange_value;
#ifdef _LP64
__asm__ volatile(
"1:\n\t"
" mov %1, %%o3\n\t"
" ldx [%2], %%o2\n\t"
" casx [%2], %%o2, %%o3\n\t"
" cmp %%o2, %%o3\n\t"
" bne %%xcc, 1b\n\t"
" nop\n\t"
" mov %%o2, %0\n\t"
: "=r" (rv)
: "r" (exchange_value), "r" (dest)
: "memory", "o2", "o3");
#else
__asm__ volatile(
"swap [%2],%1\n\t"
: "=r" (rv)
: "0" (exchange_value) /* we use same register as for return value */, "r" (dest)
: "memory");
#endif // _LP64
return rv;
}
inline void* Atomic::xchg_ptr(void* exchange_value, volatile void* dest) {
return (void*)xchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest);
}
inline jint Atomic::cmpxchg (jint exchange_value, volatile jint* dest, jint compare_value) {
jint rv;
__asm__ volatile(
" cas [%2], %3, %0"
: "=r" (rv)
: "0" (exchange_value), "r" (dest), "r" (compare_value)
: "memory");
return rv;
}
inline jlong Atomic::cmpxchg (jlong exchange_value, volatile jlong* dest, jlong compare_value) {
#ifdef _LP64
jlong rv;
__asm__ volatile(
" casx [%2], %3, %0"
: "=r" (rv)
: "0" (exchange_value), "r" (dest), "r" (compare_value)
: "memory");
return rv;
#else
assert(VM_Version::v9_instructions_work(), "cas only supported on v9");
volatile jlong_accessor evl, cvl, rv;
evl.long_value = exchange_value;
cvl.long_value = compare_value;
__asm__ volatile(
" sllx %2, 32, %2\n\t"
" srl %3, 0, %3\n\t"
" or %2, %3, %2\n\t"
" sllx %5, 32, %5\n\t"
" srl %6, 0, %6\n\t"
" or %5, %6, %5\n\t"
" casx [%4], %5, %2\n\t"
" srl %2, 0, %1\n\t"
" srlx %2, 32, %0\n\t"
: "=r" (rv.words[0]), "=r" (rv.words[1])
: "r" (evl.words[0]), "r" (evl.words[1]), "r" (dest), "r" (cvl.words[0]), "r" (cvl.words[1])
: "memory");
return rv.long_value;
#endif
}
inline intptr_t Atomic::cmpxchg_ptr(intptr_t exchange_value, volatile intptr_t* dest, intptr_t compare_value) {
intptr_t rv;
#ifdef _LP64
__asm__ volatile(
" casx [%2], %3, %0"
: "=r" (rv)
: "0" (exchange_value), "r" (dest), "r" (compare_value)
: "memory");
#else
__asm__ volatile(
" cas [%2], %3, %0"
: "=r" (rv)
: "0" (exchange_value), "r" (dest), "r" (compare_value)
: "memory");
#endif // _LP64
return rv;
}
inline void* Atomic::cmpxchg_ptr(void* exchange_value, volatile void* dest, void* compare_value) {
return (void*)cmpxchg_ptr((intptr_t)exchange_value, (volatile intptr_t*)dest, (intptr_t)compare_value);
}

34
hotspot/src/os_cpu/linux_sparc/vm/globals_linux_sparc.hpp Normal file
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/*
* Copyright 2000-2004 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
//
// Sets the default values for platform dependent flags used by the
// runtime system. (see globals.hpp)
//
define_pd_global(uintx, JVMInvokeMethodSlack, 12288);
define_pd_global(intx, CompilerThreadStackSize, 0);
// Only used on 64 bit Windows platforms
define_pd_global(bool, UseVectoredExceptions, false);

27
hotspot/src/os_cpu/linux_sparc/vm/linux_sparc.ad Normal file
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//
// Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved.
// DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
//
// 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.
//
// Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
// CA 95054 USA or visit www.sun.com if you need additional information or
// have any questions.
//
//
//
// SPARC Linux Architecture Description File

105
hotspot/src/os_cpu/linux_sparc/vm/linux_sparc.s Normal file
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#
# Copyright 2005-2007 Sun Microsystems, Inc. All Rights Reserved.
# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
#
# 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.
#
# Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
# CA 95054 USA or visit www.sun.com if you need additional information or
# have any questions.
#
# Prototype: int SafeFetch32 (int * adr, int ErrValue)
# The "ld" at Fetch32 is potentially faulting instruction.
# If the instruction traps the trap handler will arrange
# for control to resume at Fetch32Resume.
# By convention with the trap handler we ensure there is a non-CTI
# instruction in the trap shadow.
.globl SafeFetch32, Fetch32PFI, Fetch32Resume
.globl SafeFetchN
.align 32
.type SafeFetch32,@function
SafeFetch32:
mov %o0, %g1
mov %o1, %o0
Fetch32PFI:
# <-- Potentially faulting instruction
ld [%g1], %o0
Fetch32Resume:
nop
retl
nop
.globl SafeFetchN, FetchNPFI, FetchNResume
.type SafeFetchN,@function
.align 32
SafeFetchN:
mov %o0, %g1
mov %o1, %o0
FetchNPFI:
ldn [%g1], %o0
FetchNResume:
nop
retl
nop
# Possibilities:
# -- membar
# -- CAS (SP + BIAS, G0, G0)
# -- wr %g0, %asi
.globl SpinPause
.type SpinPause,@function
.align 32
SpinPause:
retl
mov %g0, %o0
.globl _Copy_conjoint_jlongs_atomic
.type _Copy_conjoint_jlongs_atomic,@function
_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 _flush_reg_windows
.align 32
_flush_reg_windows:
ta 0x03
retl
mov %fp, %o0

102
hotspot/src/os_cpu/linux_sparc/vm/orderAccess_linux_sparc.inline.hpp Normal file
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/*
* Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
// Implementation of class OrderAccess.
// Assume TSO.
inline void OrderAccess::loadload() { acquire(); }
inline void OrderAccess::storestore() { release(); }
inline void OrderAccess::loadstore() { acquire(); }
inline void OrderAccess::storeload() { fence(); }
inline void OrderAccess::acquire() {
__asm__ volatile ("nop" : : :);
}
inline void OrderAccess::release() {
jint* dummy = (jint*)&dummy;
__asm__ volatile("stw %%g0, [%0]" : : "r" (dummy) : "memory");
}
inline void OrderAccess::fence() {
__asm__ volatile ("membar #StoreLoad" : : :);
}
inline jbyte OrderAccess::load_acquire(volatile jbyte* p) { return *p; }
inline jshort OrderAccess::load_acquire(volatile jshort* p) { return *p; }
inline jint OrderAccess::load_acquire(volatile jint* p) { return *p; }
inline jlong OrderAccess::load_acquire(volatile jlong* p) { return *p; }
inline jubyte OrderAccess::load_acquire(volatile jubyte* p) { return *p; }
inline jushort OrderAccess::load_acquire(volatile jushort* p) { return *p; }
inline juint OrderAccess::load_acquire(volatile juint* p) { return *p; }
inline julong OrderAccess::load_acquire(volatile julong* p) { return *p; }
inline jfloat OrderAccess::load_acquire(volatile jfloat* p) { return *p; }
inline jdouble OrderAccess::load_acquire(volatile jdouble* p) { return *p; }
inline intptr_t OrderAccess::load_ptr_acquire(volatile intptr_t* p) { return *p; }
inline void* OrderAccess::load_ptr_acquire(volatile void* p) { return *(void* volatile *)p; }
inline void* OrderAccess::load_ptr_acquire(const volatile void* p) { return *(void* const volatile *)p; }
inline void OrderAccess::release_store(volatile jbyte* p, jbyte v) { *p = v; }
inline void OrderAccess::release_store(volatile jshort* p, jshort v) { *p = v; }
inline void OrderAccess::release_store(volatile jint* p, jint v) { *p = v; }
inline void OrderAccess::release_store(volatile jlong* p, jlong v) { *p = v; }
inline void OrderAccess::release_store(volatile jubyte* p, jubyte v) { *p = v; }
inline void OrderAccess::release_store(volatile jushort* p, jushort v) { *p = v; }
inline void OrderAccess::release_store(volatile juint* p, juint v) { *p = v; }
inline void OrderAccess::release_store(volatile julong* p, julong v) { *p = v; }
inline void OrderAccess::release_store(volatile jfloat* p, jfloat v) { *p = v; }
inline void OrderAccess::release_store(volatile jdouble* p, jdouble v) { *p = v; }
inline void OrderAccess::release_store_ptr(volatile intptr_t* p, intptr_t v) { *p = v; }
inline void OrderAccess::release_store_ptr(volatile void* p, void* v) { *(void* volatile *)p = v; }
inline void OrderAccess::store_fence(jbyte* p, jbyte v) { *p = v; fence(); }
inline void OrderAccess::store_fence(jshort* p, jshort v) { *p = v; fence(); }
inline void OrderAccess::store_fence(jint* p, jint v) { *p = v; fence(); }
inline void OrderAccess::store_fence(jlong* p, jlong v) { *p = v; fence(); }
inline void OrderAccess::store_fence(jubyte* p, jubyte v) { *p = v; fence(); }
inline void OrderAccess::store_fence(jushort* p, jushort v) { *p = v; fence(); }
inline void OrderAccess::store_fence(juint* p, juint v) { *p = v; fence(); }
inline void OrderAccess::store_fence(julong* p, julong v) { *p = v; fence(); }
inline void OrderAccess::store_fence(jfloat* p, jfloat v) { *p = v; fence(); }
inline void OrderAccess::store_fence(jdouble* p, jdouble v) { *p = v; fence(); }
inline void OrderAccess::store_ptr_fence(intptr_t* p, intptr_t v) { *p = v; fence(); }
inline void OrderAccess::store_ptr_fence(void** p, void* v) { *p = v; fence(); }
inline void OrderAccess::release_store_fence(volatile jbyte* p, jbyte v) { *p = v; fence(); }
inline void OrderAccess::release_store_fence(volatile jshort* p, jshort v) { *p = v; fence(); }
inline void OrderAccess::release_store_fence(volatile jint* p, jint v) { *p = v; fence(); }
inline void OrderAccess::release_store_fence(volatile jlong* p, jlong v) { *p = v; fence(); }
inline void OrderAccess::release_store_fence(volatile jubyte* p, jubyte v) { *p = v; fence(); }
inline void OrderAccess::release_store_fence(volatile jushort* p, jushort v) { *p = v; fence(); }
inline void OrderAccess::release_store_fence(volatile juint* p, juint v) { *p = v; fence(); }
inline void OrderAccess::release_store_fence(volatile julong* p, julong v) { *p = v; fence(); }
inline void OrderAccess::release_store_fence(volatile jfloat* p, jfloat v) { *p = v; fence(); }
inline void OrderAccess::release_store_fence(volatile jdouble* p, jdouble v) { *p = v; fence(); }
inline void OrderAccess::release_store_ptr_fence(volatile intptr_t* p, intptr_t v) { *p = v; fence(); }
inline void OrderAccess::release_store_ptr_fence(volatile void* p, void* v) { *(void* volatile *)p = v; fence(); }

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hotspot/src/os_cpu/linux_sparc/vm/os_linux_sparc.cpp Normal file
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/*
* Copyright 1999-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
// do not include precompiled header file
#include "incls/_os_linux_sparc.cpp.incl"
// Linux/Sparc has rather obscure naming of registers in sigcontext
// different between 32 and 64 bits
#ifdef _LP64
#define SIG_PC(x) ((x)->sigc_regs.tpc)
#define SIG_NPC(x) ((x)->sigc_regs.tnpc)
#define SIG_REGS(x) ((x)->sigc_regs)
#else
#define SIG_PC(x) ((x)->si_regs.pc)
#define SIG_NPC(x) ((x)->si_regs.npc)
#define SIG_REGS(x) ((x)->si_regs)
#endif
// those are to reference registers in sigcontext
enum {
CON_G0 = 0,
CON_G1,
CON_G2,
CON_G3,
CON_G4,
CON_G5,
CON_G6,
CON_G7,
CON_O0,
CON_O1,
CON_O2,
CON_O3,
CON_O4,
CON_O5,
CON_O6,
CON_O7,
};
static inline void set_cont_address(sigcontext* ctx, address addr) {
SIG_PC(ctx) = (intptr_t)addr;
SIG_NPC(ctx) = (intptr_t)(addr+4);
}
// For Forte Analyzer AsyncGetCallTrace profiling support - thread is
// currently interrupted by SIGPROF.
// os::Solaris::fetch_frame_from_ucontext() tries to skip nested
// signal frames. Currently we don't do that on Linux, so it's the
// same as os::fetch_frame_from_context().
ExtendedPC os::Linux::fetch_frame_from_ucontext(Thread* thread,
ucontext_t* uc,
intptr_t** ret_sp,
intptr_t** ret_fp) {
assert(thread != NULL, "just checking");
assert(ret_sp != NULL, "just checking");
assert(ret_fp != NULL, "just checking");
return os::fetch_frame_from_context(uc, ret_sp, ret_fp);
}
ExtendedPC os::fetch_frame_from_context(void* ucVoid,
intptr_t** ret_sp,
intptr_t** ret_fp) {
ucontext_t* uc = (ucontext_t*) ucVoid;
ExtendedPC epc;
if (uc != NULL) {
epc = ExtendedPC(os::Linux::ucontext_get_pc(uc));
if (ret_sp) {
*ret_sp = os::Linux::ucontext_get_sp(uc);
}
if (ret_fp) {
*ret_fp = os::Linux::ucontext_get_fp(uc);
}
} else {
// construct empty ExtendedPC for return value checking
epc = ExtendedPC(NULL);
if (ret_sp) {
*ret_sp = (intptr_t*) NULL;
}
if (ret_fp) {
*ret_fp = (intptr_t*) NULL;
}
}
return epc;
}
frame os::fetch_frame_from_context(void* ucVoid) {
intptr_t* sp;
intptr_t* fp;
ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp);
return frame(sp, fp, epc.pc());
}
frame os::get_sender_for_C_frame(frame* fr) {
return frame(fr->sender_sp(), fr->link(), fr->sender_pc());
}
frame os::current_frame() {
fprintf(stderr, "current_frame()");
intptr_t* sp = StubRoutines::Sparc::flush_callers_register_windows_func()();
frame myframe(sp, frame::unpatchable,
CAST_FROM_FN_PTR(address, os::current_frame));
if (os::is_first_C_frame(&myframe)) {
// stack is not walkable
return frame(NULL, frame::unpatchable, NULL);
} else {
return os::get_sender_for_C_frame(&myframe);
}
}
address os::current_stack_pointer() {
register void *sp __asm__ ("sp");
return (address)sp;
}
static void current_stack_region(address* bottom, size_t* size) {
if (os::Linux::is_initial_thread()) {
// initial thread needs special handling because pthread_getattr_np()
// may return bogus value.
*bottom = os::Linux::initial_thread_stack_bottom();
*size = os::Linux::initial_thread_stack_size();
} else {
pthread_attr_t attr;
int rslt = pthread_getattr_np(pthread_self(), &attr);
// JVM needs to know exact stack location, abort if it fails
if (rslt != 0) {
if (rslt == ENOMEM) {
vm_exit_out_of_memory(0, "pthread_getattr_np");
} else {
fatal1("pthread_getattr_np failed with errno = %d", rslt);
}
}
if (pthread_attr_getstack(&attr, (void**)bottom, size) != 0) {
fatal("Can not locate current stack attributes!");
}
pthread_attr_destroy(&attr);
}
assert(os::current_stack_pointer() >= *bottom &&
os::current_stack_pointer() < *bottom + *size, "just checking");
}
address os::current_stack_base() {
address bottom;
size_t size;
current_stack_region(&bottom, &size);
return bottom + size;
}
size_t os::current_stack_size() {
// stack size includes normal stack and HotSpot guard pages
address bottom;
size_t size;
current_stack_region(&bottom, &size);
return size;
}
char* os::non_memory_address_word() {
// Must never look like an address returned by reserve_memory,
// even in its subfields (as defined by the CPU immediate fields,
// if the CPU splits constants across multiple instructions).
// On SPARC, 0 != %hi(any real address), because there is no
// allocation in the first 1Kb of the virtual address space.
return (char*) 0;
}
void os::initialize_thread() {}
void os::print_context(outputStream *st, void *context) {
if (context == NULL) return;
ucontext_t* uc = (ucontext_t*)context;
sigcontext* sc = (sigcontext*)context;
st->print_cr("Registers:");
st->print_cr(" O0=" INTPTR_FORMAT " O1=" INTPTR_FORMAT
" O2=" INTPTR_FORMAT " O3=" INTPTR_FORMAT,
SIG_REGS(sc).u_regs[CON_O0],
SIG_REGS(sc).u_regs[CON_O1],
SIG_REGS(sc).u_regs[CON_O2],
SIG_REGS(sc).u_regs[CON_O3]);
st->print_cr(" O4=" INTPTR_FORMAT " O5=" INTPTR_FORMAT
" O6=" INTPTR_FORMAT " O7=" INTPTR_FORMAT,
SIG_REGS(sc).u_regs[CON_O4],
SIG_REGS(sc).u_regs[CON_O5],
SIG_REGS(sc).u_regs[CON_O6],
SIG_REGS(sc).u_regs[CON_O7]);
st->print_cr(" G1=" INTPTR_FORMAT " G2=" INTPTR_FORMAT
" G3=" INTPTR_FORMAT " G4=" INTPTR_FORMAT,
SIG_REGS(sc).u_regs[CON_G1],
SIG_REGS(sc).u_regs[CON_G2],
SIG_REGS(sc).u_regs[CON_G3],
SIG_REGS(sc).u_regs[CON_G4]);
st->print_cr(" G5=" INTPTR_FORMAT " G6=" INTPTR_FORMAT
" G7=" INTPTR_FORMAT " Y=" INTPTR_FORMAT,
SIG_REGS(sc).u_regs[CON_G5],
SIG_REGS(sc).u_regs[CON_G6],
SIG_REGS(sc).u_regs[CON_G7],
SIG_REGS(sc).y);
st->print_cr(" PC=" INTPTR_FORMAT " nPC=" INTPTR_FORMAT,
SIG_PC(sc),
SIG_NPC(sc));
st->cr();
st->cr();
intptr_t *sp = (intptr_t *)os::Linux::ucontext_get_sp(uc);
st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp);
print_hex_dump(st, (address)sp, (address)(sp + 32), sizeof(intptr_t));
st->cr();
// Note: it may be unsafe to inspect memory near pc. For example, pc may
// point to garbage if entry point in an nmethod is corrupted. Leave
// this at the end, and hope for the best.
address pc = os::Linux::ucontext_get_pc(uc);
st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc);
print_hex_dump(st, pc - 16, pc + 16, sizeof(char));
}
address os::Linux::ucontext_get_pc(ucontext_t* uc) {
return (address) SIG_PC((sigcontext*)uc);
}
intptr_t* os::Linux::ucontext_get_sp(ucontext_t *uc) {
return (intptr_t*)
((intptr_t)SIG_REGS((sigcontext*)uc).u_regs[CON_O6] + STACK_BIAS);
}
// not used on Sparc
intptr_t* os::Linux::ucontext_get_fp(ucontext_t *uc) {
ShouldNotReachHere();
return NULL;
}
// Utility functions
extern "C" void Fetch32PFI();
extern "C" void Fetch32Resume();
extern "C" void FetchNPFI();
extern "C" void FetchNResume();
inline static bool checkPrefetch(sigcontext* uc, address pc) {
if (pc == (address) Fetch32PFI) {
set_cont_address(uc, address(Fetch32Resume));
return true;
}
if (pc == (address) FetchNPFI) {
set_cont_address(uc, address(FetchNResume));
return true;
}
return false;
}
inline static bool checkOverflow(sigcontext* uc,
address pc,
address addr,
JavaThread* thread,
address* stub) {
// check if fault address is within thread stack
if (addr < thread->stack_base() &&
addr >= thread->stack_base() - thread->stack_size()) {
// stack overflow
if (thread->in_stack_yellow_zone(addr)) {
thread->disable_stack_yellow_zone();
if (thread->thread_state() == _thread_in_Java) {
// Throw a stack overflow exception. Guard pages will be reenabled
// while unwinding the stack.
*stub =
SharedRuntime::continuation_for_implicit_exception(thread,
pc,
SharedRuntime::STACK_OVERFLOW);
} else {
// Thread was in the vm or native code. Return and try to finish.
return true;
}
} else if (thread->in_stack_red_zone(addr)) {
// Fatal red zone violation. Disable the guard pages and fall through
// to handle_unexpected_exception way down below.
thread->disable_stack_red_zone();
tty->print_raw_cr("An irrecoverable stack overflow has occurred.");
} else {
// Accessing stack address below sp may cause SEGV if current
// thread has MAP_GROWSDOWN stack. This should only happen when
// current thread was created by user code with MAP_GROWSDOWN flag
// and then attached to VM. See notes in os_linux.cpp.
if (thread->osthread()->expanding_stack() == 0) {
thread->osthread()->set_expanding_stack();
if (os::Linux::manually_expand_stack(thread, addr)) {
thread->osthread()->clear_expanding_stack();
return true;
}
thread->osthread()->clear_expanding_stack();
} else {
fatal("recursive segv. expanding stack.");
}
}
}
return false;
}
inline static bool checkPollingPage(address pc, address fault, address* stub) {
if (fault == os::get_polling_page()) {
*stub = SharedRuntime::get_poll_stub(pc);
return true;
}
return false;
}
inline static bool checkByteBuffer(address pc, address* stub) {
// BugId 4454115: A read from a MappedByteBuffer can fault
// here if the underlying file has been truncated.
// Do not crash the VM in such a case.
CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL;
if (nm != NULL && nm->has_unsafe_access()) {
*stub = StubRoutines::handler_for_unsafe_access();
return true;
}
return false;
}
inline static bool checkVerifyOops(address pc, address fault, address* stub) {
if (pc >= MacroAssembler::_verify_oop_implicit_branch[0]
&& pc < MacroAssembler::_verify_oop_implicit_branch[1] ) {
*stub = MacroAssembler::_verify_oop_implicit_branch[2];
warning("fixed up memory fault in +VerifyOops at address "
INTPTR_FORMAT, fault);
return true;
}
return false;
}
inline static bool checkFPFault(address pc, int code,
JavaThread* thread, address* stub) {
if (code == FPE_INTDIV || code == FPE_FLTDIV) {
*stub =
SharedRuntime::
continuation_for_implicit_exception(thread,
pc,
SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO);
return true;
}
return false;
}
inline static bool checkNullPointer(address pc, intptr_t fault,
JavaThread* thread, address* stub) {
if (!MacroAssembler::needs_explicit_null_check(fault)) {
// Determination of interpreter/vtable stub/compiled code null
// exception
*stub =
SharedRuntime::
continuation_for_implicit_exception(thread, pc,
SharedRuntime::IMPLICIT_NULL);
return true;
}
return false;
}
inline static bool checkFastJNIAccess(address pc, address* stub) {
address addr = JNI_FastGetField::find_slowcase_pc(pc);
if (addr != (address)-1) {
*stub = addr;
return true;
}
return false;
}
inline static bool checkSerializePage(JavaThread* thread, address addr) {
return os::is_memory_serialize_page(thread, addr);
}
inline static bool checkZombie(sigcontext* uc, address* pc, address* stub) {
if (nativeInstruction_at(*pc)->is_zombie()) {
// zombie method (ld [%g0],%o7 instruction)
*stub = SharedRuntime::get_handle_wrong_method_stub();
// At the stub it needs to look like a call from the caller of this
// method (not a call from the segv site).
*pc = (address)SIG_REGS(uc).u_regs[CON_O7];
return true;
}
return false;
}
inline static bool checkICMiss(sigcontext* uc, address* pc, address* stub) {
#ifdef COMPILER2
if (nativeInstruction_at(*pc)->is_ic_miss_trap()) {
#ifdef ASSERT
#ifdef TIERED
CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
assert(cb->is_compiled_by_c2(), "Wrong compiler");
#endif // TIERED
#endif // ASSERT
// Inline cache missed and user trap "Tne G0+ST_RESERVED_FOR_USER_0+2" taken.
*stub = SharedRuntime::get_ic_miss_stub();
// At the stub it needs to look like a call from the caller of this
// method (not a call from the segv site).
*pc = (address)SIG_REGS(uc).u_regs[CON_O7];
return true;
}
#endif // COMPILER2
return false;
}
extern "C" int
JVM_handle_linux_signal(int sig,
siginfo_t* info,
void* ucVoid,
int abort_if_unrecognized) {
// in fact this isn't ucontext_t* at all, but struct sigcontext*
// but Linux porting layer uses ucontext_t, so to minimize code change
// we cast as needed
ucontext_t* ucFake = (ucontext_t*) ucVoid;
sigcontext* uc = (sigcontext*)ucVoid;
Thread* t = ThreadLocalStorage::get_thread_slow();
SignalHandlerMark shm(t);
// Note: it's not uncommon that JNI code uses signal/sigset to install
// then restore certain signal handler (e.g. to temporarily block SIGPIPE,
// or have a SIGILL handler when detecting CPU type). When that happens,
// JVM_handle_linux_signal() might be invoked with junk info/ucVoid. To
// avoid unnecessary crash when libjsig is not preloaded, try handle signals
// that do not require siginfo/ucontext first.
if (sig == SIGPIPE || sig == SIGXFSZ) {
// allow chained handler to go first
if (os::Linux::chained_handler(sig, info, ucVoid)) {
return true;
} else {
if (PrintMiscellaneous && (WizardMode || Verbose)) {
char buf[64];
warning("Ignoring %s - see bugs 4229104 or 646499219",
os::exception_name(sig, buf, sizeof(buf)));
}
return true;
}
}
JavaThread* thread = NULL;
VMThread* vmthread = NULL;
if (os::Linux::signal_handlers_are_installed) {
if (t != NULL ){
if(t->is_Java_thread()) {
thread = (JavaThread*)t;
}
else if(t->is_VM_thread()){
vmthread = (VMThread *)t;
}
}
}
// decide if this trap can be handled by a stub
address stub = NULL;
address pc = NULL;
address npc = NULL;
//%note os_trap_1
if (info != NULL && uc != NULL && thread != NULL) {
pc = address(SIG_PC(uc));
npc = address(SIG_NPC(uc));
// Check to see if we caught the safepoint code in the
// process of write protecting the memory serialization page.
// It write enables the page immediately after protecting it
// so we can just return to retry the write.
if ((sig == SIGSEGV) && checkSerializePage(thread, (address)info->si_addr)) {
// Block current thread until the memory serialize page permission restored.
os::block_on_serialize_page_trap();
return 1;
}
if (checkPrefetch(uc, pc)) {
return 1;
}
// Handle ALL stack overflow variations here
if (sig == SIGSEGV) {
if (checkOverflow(uc, pc, (address)info->si_addr, thread, &stub)) {
return 1;
}
}
if (sig == SIGBUS &&
thread->thread_state() == _thread_in_vm &&
thread->doing_unsafe_access()) {
stub = StubRoutines::handler_for_unsafe_access();
}
if (thread->thread_state() == _thread_in_Java) {
do {
// Java thread running in Java code => find exception handler if any
// a fault inside compiled code, the interpreter, or a stub
if ((sig == SIGSEGV) && checkPollingPage(pc, (address)info->si_addr, &stub)) {
break;
}
if ((sig == SIGBUS) && checkByteBuffer(pc, &stub)) {
break;
}
if ((sig == SIGSEGV || sig == SIGBUS) &&
checkVerifyOops(pc, (address)info->si_addr, &stub)) {
break;
}
if ((sig == SIGSEGV) && checkZombie(uc, &pc, &stub)) {
break;
}
if ((sig == SIGILL) && checkICMiss(uc, &pc, &stub)) {
break;
}
if ((sig == SIGFPE) && checkFPFault(pc, info->si_code, thread, &stub)) {
break;
}
if ((sig == SIGSEGV) &&
checkNullPointer(pc, (intptr_t)info->si_addr, thread, &stub)) {
break;
}
} while (0);
// jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in
// and the heap gets shrunk before the field access.
if ((sig == SIGSEGV) || (sig == SIGBUS)) {
checkFastJNIAccess(pc, &stub);
}
}
if (stub != NULL) {
// save all thread context in case we need to restore it
thread->set_saved_exception_pc(pc);
thread->set_saved_exception_npc(npc);
set_cont_address(uc, stub);
return true;
}
}
// signal-chaining
if (os::Linux::chained_handler(sig, info, ucVoid)) {
return true;
}
if (!abort_if_unrecognized) {
// caller wants another chance, so give it to him
return false;
}
if (pc == NULL && uc != NULL) {
pc = os::Linux::ucontext_get_pc((ucontext_t*)uc);
}
// unmask current signal
sigset_t newset;
sigemptyset(&newset);
sigaddset(&newset, sig);
sigprocmask(SIG_UNBLOCK, &newset, NULL);
VMError err(t, sig, pc, info, ucVoid);
err.report_and_die();
ShouldNotReachHere();
}
void os::Linux::init_thread_fpu_state(void) {
// Nothing to do
}
int os::Linux::get_fpu_control_word() {
return 0;
}
void os::Linux::set_fpu_control_word(int fpu) {
// nothing
}
bool os::is_allocatable(size_t bytes) {
#ifdef _LP64
return true;
#else
if (bytes < 2 * G) {
return true;
}
char* addr = reserve_memory(bytes, NULL);
if (addr != NULL) {
release_memory(addr, bytes);
}
return addr != NULL;
#endif // _LP64
}
///////////////////////////////////////////////////////////////////////////////
// thread stack
size_t os::Linux::min_stack_allowed = 128 * K;
// pthread on Ubuntu is always in floating stack mode
bool os::Linux::supports_variable_stack_size() { return true; }
// return default stack size for thr_type
size_t os::Linux::default_stack_size(os::ThreadType thr_type) {
// default stack size (compiler thread needs larger stack)
size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
return s;
}
size_t os::Linux::default_guard_size(os::ThreadType thr_type) {
// Creating guard page is very expensive. Java thread has HotSpot
// guard page, only enable glibc guard page for non-Java threads.
return (thr_type == java_thread ? 0 : page_size());
}

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/*
* Copyright 1999-2004 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
//
// NOTE: we are back in class os here, not Linux
//
static jint (*atomic_xchg_func) (jint, volatile jint*);
static jint (*atomic_cmpxchg_func) (jint, volatile jint*, jint);
static jlong (*atomic_cmpxchg_long_func)(jlong, volatile jlong*, jlong);
static jint (*atomic_add_func) (jint, volatile jint*);
static void (*fence_func) ();
static jint atomic_xchg_bootstrap (jint, volatile jint*);
static jint atomic_cmpxchg_bootstrap (jint, volatile jint*, jint);
static jlong atomic_cmpxchg_long_bootstrap(jlong, volatile jlong*, jlong);
static jint atomic_add_bootstrap (jint, volatile jint*);
static void fence_bootstrap ();
static void setup_fpu() {}
static bool is_allocatable(size_t bytes);
// Used to register dynamic code cache area with the OS
// Note: Currently only used in 64 bit Windows implementations
static bool register_code_area(char *low, char *high) { return true; }

40
hotspot/src/os_cpu/linux_sparc/vm/prefetch_linux_sparc.inline.hpp Normal file
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/*
* Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
#if defined(COMPILER2) || defined(_LP64)
inline void Prefetch::read(void *loc, intx interval) {
__asm__ volatile("prefetch [%0+%1], 0" : : "r" (loc), "r" (interval) : "memory" );
}
inline void Prefetch::write(void *loc, intx interval) {
__asm__ volatile("prefetch [%0+%1], 2" : : "r" (loc), "r" (interval) : "memory" );
}
#else
inline void Prefetch::read (void *loc, intx interval) {}
inline void Prefetch::write(void *loc, intx interval) {}
#endif

37
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/*
* Copyright 1998-2003 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
#include "incls/_precompiled.incl"
#include "incls/_threadLS_linux_sparc.cpp.incl"
void ThreadLocalStorage::generate_code_for_get_thread() {
}
void ThreadLocalStorage::pd_init() {
// Nothing to do
}
void ThreadLocalStorage::pd_set_thread(Thread* thread) {
os::thread_local_storage_at_put(ThreadLocalStorage::thread_index(), thread);
}

28
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/*
* Copyright 1998-2005 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
public:
static Thread* thread() {
return (Thread*) os::thread_local_storage_at(thread_index());
}

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/*
* Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
#include "incls/_precompiled.incl"
#include "incls/_thread_linux_sparc.cpp.incl"
// For Forte Analyzer AsyncGetCallTrace profiling support - thread is
// currently interrupted by SIGPROF
bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr,
void* ucontext,
bool isInJava) {
assert(Thread::current() == this, "caller must be current thread");
assert(this->is_Java_thread(), "must be JavaThread");
JavaThread* jt = (JavaThread *)this;
if (!isInJava) {
// make_walkable flushes register windows and grabs last_Java_pc
// which can not be done if the ucontext sp matches last_Java_sp
// stack walking utilities assume last_Java_pc set if marked flushed
jt->frame_anchor()->make_walkable(jt);
}
// If we have a walkable last_Java_frame, then we should use it
// even if isInJava == true. It should be more reliable than
// ucontext info.
if (jt->has_last_Java_frame() && jt->frame_anchor()->walkable()) {
*fr_addr = jt->pd_last_frame();
return true;
}
ucontext_t* uc = (ucontext_t*) ucontext;
// At this point, we don't have a walkable last_Java_frame, so
// we try to glean some information out of the ucontext.
intptr_t* ret_sp;
ExtendedPC addr =
os::fetch_frame_from_context(uc, &ret_sp,
NULL /* ret_fp only used on X86 */);
if (addr.pc() == NULL || ret_sp == NULL) {
// ucontext wasn't useful
return false;
}
// we were running Java code when SIGPROF came in
if (isInJava) {
// If we have a last_Java_sp, then the SIGPROF signal caught us
// right when we were transitioning from _thread_in_Java to a new
// JavaThreadState. We use last_Java_sp instead of the sp from
// the ucontext since it should be more reliable.
if (jt->has_last_Java_frame()) {
ret_sp = jt->last_Java_sp();
}
// Implied else: we don't have a last_Java_sp so we use what we
// got from the ucontext.
frame ret_frame(ret_sp, frame::unpatchable, addr.pc());
if (!ret_frame.safe_for_sender(jt)) {
// nothing else to try if the frame isn't good
return false;
}
*fr_addr = ret_frame;
return true;
}
// At this point, we know we weren't running Java code. We might
// have a last_Java_sp, but we don't have a walkable frame.
// However, we might still be able to construct something useful
// if the thread was running native code.
if (jt->has_last_Java_frame()) {
assert(!jt->frame_anchor()->walkable(), "case covered above");
if (jt->thread_state() == _thread_in_native) {
frame ret_frame(jt->last_Java_sp(), frame::unpatchable, addr.pc());
if (!ret_frame.safe_for_sender(jt)) {
// nothing else to try if the frame isn't good
return false;
}
*fr_addr = ret_frame;
return true;
}
}
// nothing else to try
return false;
}

98
hotspot/src/os_cpu/linux_sparc/vm/thread_linux_sparc.hpp Normal file
View File

@ -0,0 +1,98 @@
/*
* Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
private:
void pd_initialize() {
_anchor.clear();
_base_of_stack_pointer = NULL;
}
frame pd_last_frame() {
assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
assert(_anchor.walkable(), "thread has not dumped its register windows yet");
assert(_anchor.last_Java_pc() != NULL, "Ack no pc!");
return frame(last_Java_sp(), frame::unpatchable, _anchor.last_Java_pc());
}
// Sometimes the trap handler needs to record both PC and NPC.
// This is a SPARC-specific companion to Thread::set_saved_exception_pc.
address _saved_exception_npc;
// In polling_page_safepoint_handler_blob(s) we have to tail call other
// blobs without blowing any registers. A tail call requires some
// register to jump with and we can't blow any registers, so it must
// be restored in the delay slot. 'restore' cannot be used as it
// will chop the heads off of 64-bit %o registers in the 32-bit
// build. Instead we reload the registers using G2_thread and this
// location. Must be 64bits in the 32-bit LION build.
jdouble _o_reg_temps[6];
// a stack pointer older than any java frame stack pointer. It is
// used to validate stack pointers in frame::next_younger_sp (it
// provides the upper bound in the range check). This is necessary
// on Solaris/SPARC since the ucontext passed to a signal handler is
// sometimes corrupt and we need a way to check the extracted sp.
intptr_t* _base_of_stack_pointer;
public:
static int o_reg_temps_offset_in_bytes() { return offset_of(JavaThread, _o_reg_temps); }
#ifndef _LP64
address o_reg_temps(int i) { return (address)&_o_reg_temps[i]; }
#endif
static int saved_exception_npc_offset_in_bytes() { return offset_of(JavaThread,_saved_exception_npc); }
address saved_exception_npc() { return _saved_exception_npc; }
void set_saved_exception_npc(address a) { _saved_exception_npc = a; }
public:
intptr_t* base_of_stack_pointer() { return _base_of_stack_pointer; }
void set_base_of_stack_pointer(intptr_t* base_sp) {
_base_of_stack_pointer = base_sp;
}
void record_base_of_stack_pointer() {
intptr_t *sp = (intptr_t *)(((intptr_t)StubRoutines::Sparc::flush_callers_register_windows_func()()));
intptr_t *ysp;
while((ysp = (intptr_t*)sp[FP->sp_offset_in_saved_window()]) != NULL) {
sp = (intptr_t *)((intptr_t)ysp + STACK_BIAS);
}
_base_of_stack_pointer = sp;
}
bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext,
bool isInJava);
// These routines are only used on cpu architectures that
// have separate register stacks (Itanium).
static bool register_stack_overflow() { return false; }
static void enable_register_stack_guard() {}
static void disable_register_stack_guard() {}

69
hotspot/src/os_cpu/linux_sparc/vm/vmStructs_linux_sparc.hpp Normal file
View File

@ -0,0 +1,69 @@
/*
* Copyright 2000-2007 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
// These are the OS and CPU-specific fields, types and integer
// constants required by the Serviceability Agent. This file is
// referenced by vmStructs.cpp.
#define VM_STRUCTS_OS_CPU(nonstatic_field, static_field, unchecked_nonstatic_field, volatile_nonstatic_field, nonproduct_nonstatic_field, c2_nonstatic_field, unchecked_c1_static_field, unchecked_c2_static_field, last_entry) \
\
/******************************/ \
/* Threads (NOTE: incomplete) */ \
/******************************/ \
\
nonstatic_field(JavaThread, _base_of_stack_pointer, intptr_t*) \
nonstatic_field(OSThread, _thread_id, pid_t) \
nonstatic_field(OSThread, _pthread_id, pthread_t) \
/* This must be the last entry, and must be present */ \
last_entry()
#define VM_TYPES_OS_CPU(declare_type, declare_toplevel_type, declare_oop_type, declare_integer_type, declare_unsigned_integer_type, declare_c1_toplevel_type, declare_c2_type, declare_c2_toplevel_type, last_entry) \
\
/**********************/ \
/* POSIX Thread IDs */ \
/**********************/ \
\
declare_integer_type(pid_t) \
declare_unsigned_integer_type(pthread_t) \
\
/* This must be the last entry, and must be present */ \
last_entry()
#define VM_INT_CONSTANTS_OS_CPU(declare_constant, declare_preprocessor_constant, declare_c1_constant, declare_c2_constant, declare_c2_preprocessor_constant, last_entry) \
\
/************************/ \
/* JavaThread constants */ \
/************************/ \
\
declare_constant(JavaFrameAnchor::flushed) \
\
/* This must be the last entry, and must be present */ \
last_entry()
#define VM_LONG_CONSTANTS_OS_CPU(declare_constant, declare_preprocessor_constant, declare_c1_constant, declare_c2_constant, declare_c2_preprocessor_constant, last_entry) \
\
/* This must be the last entry, and must be present */ \
last_entry()

61
hotspot/src/os_cpu/linux_sparc/vm/vm_version_linux_sparc.cpp Normal file
View File

@ -0,0 +1,61 @@
/*
* Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
# include "incls/_precompiled.incl"
# include "incls/_vm_version_linux_sparc.cpp.incl"
static bool detect_niagara() {
char cpu[128];
bool rv = false;
FILE* fp = fopen("/proc/cpuinfo", "r");
if (fp == NULL) {
return rv;
}
while (!feof(fp)) {
if (fscanf(fp, "cpu\t\t: %100[^\n]", &cpu) == 1) {
if (strstr(cpu, "Niagara") != NULL) {
rv = true;
}
break;
}
}
fclose(fp);
return rv;
}
int VM_Version::platform_features(int features) {
// Default to generic v9
features = generic_v9_m;
if (detect_niagara()) {
NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Detected Linux on Niagara");)
features = niagara1_m;
}
return features;
}

2
hotspot/src/share/vm/oops/oop.inline.hpp
View File

@ -135,7 +135,7 @@ inline narrowOop oopDesc::encode_heap_oop_not_null(oop v) {
assert(!is_null(v), "oop value can never be zero");
address heap_base = Universe::heap_base();
uint64_t result = (uint64_t)(pointer_delta((void*)v, (void*)heap_base, 1) >> LogMinObjAlignmentInBytes);
assert((result & 0xffffffff00000000L) == 0, "narrow oop overflow");
assert((result & 0xffffffff00000000ULL) == 0, "narrow oop overflow");
return (narrowOop)result;
}