Fixes for Zero ppc[32/64] issues:
Chris Phillips
ChPhilli at redhat.com
Wed Oct 1 03:50:30 UTC 2014
-------------- next part --------------
# HG changeset patch
# User chrisphi
# Date 1412135251 14400
# Node ID 0042eb7ed0c699b03bee37911476e7465af05329
# Parent d5d2aed90aa8bc68632698585d2fa18cf35da232
Bz 1015432
https://bugzilla.redhat.com/show_bug.cgi?id=1015432
https://bugzilla.redhat.com/show_bug.cgi?id=1125557
Summary: Reverse effects of fix for Oracle bug 8013398 on Zero jvm [related fix].
Workaround for gcc bug [ http://gcc.gnu.org/PR63341 Add -fno-tree-vectorize to ppc build.]
found by Andrew Haley aph at redhat.com
jdk/make/common/Defs-linux.gmk
diff --git a/make/common/Defs-linux.gmk b/make/common/Defs-linux.gmk
--- a/make/common/Defs-linux.gmk
+++ b/make/common/Defs-linux.gmk
@@ -222,7 +222,27 @@
CFLAGS_REQUIRED += -D_LITTLE_ENDIAN
endif
LDFLAGS_COMMON += $(ZERO_ARCHFLAG)
+ ifeq ($(ZERO_ARCHDEF),PPC)
+# gcc bug http://gcc.gnu.org/PR63341 in ppc code generation requires -fno-tree-vectorize for now
+ ifeq ($(ARCH_DATA_MODEL), 32)
+ CFLAGS_REQUIRED += -DPPC -DPPC32 -fno-tree-vectorize
+ else
+ CFLAGS_REQUIRED += -DPPC -DPPC64 -fno-tree-vectorize
+ endif
+ else
+ ifeq ($(ZERO_ARCHDEF),PPC32)
+ CFLAGS_REQUIRED += -DPPC -DPPC32 -fno-tree-vectorize
+ else
+ ifeq ($(ZERO_ARCHDEF),PPC64)
+ CFLAGS_REQUIRED += -DPPC -DPPC64 -fno-tree-vectorize
+ endif
+ endif
+ endif
else
+# gcc bug http://gcc.gnu.org/PR63341 in ppc code generation requires -fno-tree-vectorize for now
+CFLAGS_REQUIRED_ppc += -fno-tree-vectorize
+CFLAGS_REQUIRED_ppc64 += -fno-tree-vectorize
+#
CFLAGS_REQUIRED = $(CFLAGS_REQUIRED_$(ARCH))
LDFLAGS_COMMON += $(LDFLAGS_COMMON_$(ARCH))
endif
-------------- next part --------------
# HG changeset patch
# User chrisphi
# Date 1412132816 14400
# Node ID 28dceec9f6985e021cec71827c5f41113db237d2
# Parent 9e540ae27ead9aa785d0a7c3d366d2ab5304775d
Bz 1015432
https://bugzilla.redhat.com/show_bug.cgi?id=1015432
https://bugzilla.redhat.com/show_bug.cgi?id=1125557
Summary: Reverse effects of fix for Oracle bug 8013398 on Zero jvm.
1) Stack Overflow bugs found in ppc64 , ppc32 due to bad min stack allowed calc.
found by Andrew Haley aph at redhat.com
hotspot/src/cpu/zero/vm/stack_zero.hpp
hotspot/src/cpu/zero/vm/stack_zero.inline.hpp
hotspot/src/os/linux/vm/os_linux.cpp
hotspot/src/os/bsd/vm/os_bsd.cpp
2) Incorrect HW flags for atomic_copy64 causing spurious SEGV's.
found by Andrew Haley aph at redhat.com
hotspot/make/linux/Makefile
hotspot/make/bsd/Makefile
hotspot/make/bsd/platform_zero.in
hotspot/make/linux/platform_zero.in
hotspot/src/share/vm/utilities/macros.hpp
3) Missing synch for xchg , xchg_ptr also possible cause of SEGV's.
found by Andrew Haley aph at redhat.com
hotspot/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
hotspot/src/os_cpu/bsd_zero/vm/atomic_bsd_zero.inline.hpp
4) Workaround for gcc bug [ http://gcc.gnu.org/PR63341 Add -fno-tree-vectorize to ppc build.]
found by Andrew Haley aph at redhat.com
hotspot/make/linux/makefiles/gcc.make
hotspot/make/bsd/makefiles/gcc.make
5) And fix code rot to allow building Zero hotspot jvm debug[jvmg] , fastdebug.
hotspot/src/os_cpu/linux_zero/vm/os_linux_zero.cpp
hotspot/src/share/vm/interpreter/bytecodeInterpreter.cpp
diff --git a/make/bsd/Makefile b/make/bsd/Makefile
--- a/make/bsd/Makefile
+++ b/make/bsd/Makefile
@@ -282,7 +282,23 @@
$(BUILDTREE) VARIANT=shark VARIANTARCH=$(VARIANTARCH)
platform_zero: $(GAMMADIR)/make/$(OSNAME)/platform_zero.in
- $(SED) 's/@ZERO_ARCHDEF@/$(ZERO_ARCHDEF)/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ifeq ($(ZERO_ARCHDEF),PPC)
+ ifndef LP64
+ $(SED) 's/@ZERO_ARCHDEF@/-DPPC -DPPC32/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ else
+ $(SED) 's/@ZERO_ARCHDEF@/-DPPC -DPPC64/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ endif
+else
+ ifeq ($(ZERO_ARCHDEF),PPC64)
+ $(SED) 's/@ZERO_ARCHDEF@/-DPPC -DPPC64/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ else
+ ifeq ($(ZERO_ARCHDEF),PPC32)
+ $(SED) 's/@ZERO_ARCHDEF@/-DPPC -DPPC32/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ else
+ $(SED) 's/@ZERO_ARCHDEF@/-D$(ZERO_ARCHDEF)/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ endif
+ endif
+endif
# Define INSTALL=y at command line to automatically copy JVM into JAVA_HOME
diff --git a/make/bsd/makefiles/gcc.make b/make/bsd/makefiles/gcc.make
--- a/make/bsd/makefiles/gcc.make
+++ b/make/bsd/makefiles/gcc.make
@@ -137,6 +137,20 @@
# Ineffecient 16-byte stack re-alignment on Darwin/IA32
ARCHFLAG/i486 += -mstackrealign
endif
+# gcc bug http://gcc.gnu.org/PR63341 in ppc code generation requires -fno-tree-vectorize for now
+ARCHFLAG/ppc += -fno-tree-vectorize
+ARCHFLAG/ppc64 += -fno-tree-vectorize
+ifeq ($(TYPE),ZERO)
+ ifeq ($(ZERO_ARCHDEF),PPC)
+ ARCHFLAG/zero += -fno-tree-vectorize
+ endif
+ ifeq ($(ZERO_ARCHDEF),PPC32)
+ ARCHFLAG/zero += -fno-tree-vectorize
+ endif
+ ifeq ($(ZERO_ARCHDEF),PPC64)
+ ARCHFLAG/zero += -fno-tree-vectorize
+ endif
+endif
CFLAGS += $(ARCHFLAG)
AOUT_FLAGS += $(ARCHFLAG)
diff --git a/make/bsd/platform_zero.in b/make/bsd/platform_zero.in
--- a/make/bsd/platform_zero.in
+++ b/make/bsd/platform_zero.in
@@ -14,4 +14,4 @@
gnu_dis_arch = zero
-sysdefs = -D_ALLBSD_SOURCE -D_GNU_SOURCE -DCC_INTERP -DZERO -D at ZERO_ARCHDEF@ -DZERO_LIBARCH=\"@ZERO_LIBARCH@\"
+sysdefs = -D_ALLBSD_SOURCE -D_GNU_SOURCE -DCC_INTERP -DZERO @ZERO_ARCHDEF@ -DZERO_LIBARCH=\"@ZERO_LIBARCH@\"
diff --git a/make/linux/Makefile b/make/linux/Makefile
--- a/make/linux/Makefile
+++ b/make/linux/Makefile
@@ -286,7 +286,23 @@
$(BUILDTREE) VARIANT=shark VARIANTARCH=$(VARIANTARCH)
platform_zero: $(GAMMADIR)/make/$(OSNAME)/platform_zero.in
- $(SED) 's/@ZERO_ARCHDEF@/$(ZERO_ARCHDEF)/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ifeq ($(ZERO_ARCHDEF),PPC)
+ ifndef LP64
+ $(SED) 's/@ZERO_ARCHDEF@/-DPPC -DPPC32/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ else
+ $(SED) 's/@ZERO_ARCHDEF@/-DPPC -DPPC64/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ endif
+else
+ ifeq ($(ZERO_ARCHDEF),PPC64)
+ $(SED) 's/@ZERO_ARCHDEF@/-DPPC -DPPC64/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ else
+ ifeq ($(ZERO_ARCHDEF),PPC32)
+ $(SED) 's/@ZERO_ARCHDEF@/-DPPC -DPPC32/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ else
+ $(SED) 's/@ZERO_ARCHDEF@/-D$(ZERO_ARCHDEF)/g;s/@ZERO_LIBARCH@/$(ZERO_LIBARCH)/g;' < $< > $@
+ endif
+ endif
+endif
# Define INSTALL=y at command line to automatically copy JVM into JAVA_HOME
diff --git a/make/linux/makefiles/gcc.make b/make/linux/makefiles/gcc.make
--- a/make/linux/makefiles/gcc.make
+++ b/make/linux/makefiles/gcc.make
@@ -78,6 +78,7 @@
ifeq ($(TYPE),ZERO)
CFLAGS += $(LIBFFI_CFLAGS)
+
endif
ifeq ($(TYPE),SHARK)
CFLAGS += $(LIBFFI_CFLAGS)
@@ -106,6 +107,20 @@
ARCHFLAG/ppc = -mcpu=powerpc
endif
ARCHFLAG/ppc64 = -m64
+# gcc bug http://gcc.gnu.org/PR63341 in ppc code generation requires -fno-tree-vectorize for now
+ARCHFLAG/ppc += -fno-tree-vectorize
+ARCHFLAG/ppc64 += -fno-tree-vectorize
+ifeq ($(TYPE),ZERO)
+ ifeq ($(ZERO_ARCHDEF),PPC)
+ ARCHFLAG/zero += -fno-tree-vectorize
+ endif
+ ifeq ($(ZERO_ARCHDEF),PPC32)
+ ARCHFLAG/zero += -fno-tree-vectorize
+ endif
+ ifeq ($(ZERO_ARCHDEF),PPC64)
+ ARCHFLAG/zero += -fno-tree-vectorize
+ endif
+endif
CFLAGS += $(ARCHFLAG)
AOUT_FLAGS += $(ARCHFLAG)
diff --git a/make/linux/platform_zero.in b/make/linux/platform_zero.in
--- a/make/linux/platform_zero.in
+++ b/make/linux/platform_zero.in
@@ -14,4 +14,4 @@
gnu_dis_arch = zero
-sysdefs = -DLINUX -D_GNU_SOURCE -DCC_INTERP -DZERO -DTARGET_ARCH_NYI_6939861=1 -D at ZERO_ARCHDEF@ -DZERO_LIBARCH=\"@ZERO_LIBARCH@\"
+sysdefs = -DLINUX -D_GNU_SOURCE -DCC_INTERP -DZERO @ZERO_ARCHDEF@ -DZERO_LIBARCH=\"@ZERO_LIBARCH@\"
diff --git a/src/cpu/zero/vm/stack_zero.hpp b/src/cpu/zero/vm/stack_zero.hpp
--- a/src/cpu/zero/vm/stack_zero.hpp
+++ b/src/cpu/zero/vm/stack_zero.hpp
@@ -99,7 +99,7 @@
int shadow_pages_size() const {
return _shadow_pages_size;
}
- int abi_stack_available(Thread *thread) const;
+ ssize_t abi_stack_available(Thread *thread) const;
public:
void overflow_check(int required_words, TRAPS);
diff --git a/src/cpu/zero/vm/stack_zero.inline.hpp b/src/cpu/zero/vm/stack_zero.inline.hpp
--- a/src/cpu/zero/vm/stack_zero.inline.hpp
+++ b/src/cpu/zero/vm/stack_zero.inline.hpp
@@ -47,10 +47,11 @@
// This method returns the amount of ABI stack available for us
// to use under normal circumstances. Note that the returned
// value can be negative.
-inline int ZeroStack::abi_stack_available(Thread *thread) const {
- int stack_used = thread->stack_base() - (address) &stack_used;
- int stack_free = thread->stack_size() - stack_used;
- return stack_free - shadow_pages_size();
+inline ssize_t ZeroStack::abi_stack_available(Thread *thread) const {
+ ssize_t stack_used = thread->stack_base() - (address) &stack_used
+ + (StackYellowPages+StackRedPages+StackShadowPages) * os::vm_page_size();
+ ssize_t stack_free = thread->stack_size() - stack_used;
+ return stack_free;
}
#endif // CPU_ZERO_VM_STACK_ZERO_INLINE_HPP
diff --git a/src/os/bsd/vm/os_bsd.cpp b/src/os/bsd/vm/os_bsd.cpp
--- a/src/os/bsd/vm/os_bsd.cpp
+++ b/src/os/bsd/vm/os_bsd.cpp
@@ -4773,6 +4773,14 @@
(size_t)(StackYellowPages+StackRedPages+StackShadowPages+
2*BytesPerWord COMPILER2_PRESENT(+1)) * Bsd::page_size());
+#ifdef ZERO
+ // If this is Zero, allow at the very minimum one page each for the
+ // Zero stack and the native stack. This won't make any difference
+ // for 4k pages, but is significant for large pages.
+ os::Bsd::min_stack_allowed = MAX2(os::Bsd::min_stack_allowed,
+ (size_t)(StackYellowPages+StackRedPages+StackShadowPages+2) * Bsd::page_size());
+#endif
+
size_t threadStackSizeInBytes = ThreadStackSize * K;
if (threadStackSizeInBytes != 0 &&
threadStackSizeInBytes < os::Bsd::min_stack_allowed) {
diff --git a/src/os/linux/vm/os_linux.cpp b/src/os/linux/vm/os_linux.cpp
--- a/src/os/linux/vm/os_linux.cpp
+++ b/src/os/linux/vm/os_linux.cpp
@@ -4916,16 +4916,18 @@
// size. Add a page for compiler2 recursion in main thread.
// Add in 2*BytesPerWord times page size to account for VM stack during
// class initialization depending on 32 or 64 bit VM.
-NOT_ZERO (
os::Linux::min_stack_allowed = MAX2(os::Linux::min_stack_allowed,
(size_t)(StackYellowPages+StackRedPages+StackShadowPages) * Linux::page_size() +
(2*BytesPerWord COMPILER2_PRESENT(+1)) * Linux::vm_default_page_size());
- )
-ZERO_ONLY (
- os::Linux::min_stack_allowed = MAX2(os::Linux::min_stack_allowed,
- (size_t)(StackYellowPages+StackRedPages+StackShadowPages+
- 2*BytesPerWord COMPILER2_PRESENT(+1)) * Linux::page_size());
- )
+
+#ifdef ZERO
+ // If this is Zero, allow at the very minimum one page each for the
+ // Zero stack and the native stack. This won't make any difference
+ // for 4k pages, but is significant for large pages.
+ os::Linux::min_stack_allowed = MAX2(os::Linux::min_stack_allowed,
+ (size_t)(StackYellowPages+StackRedPages+StackShadowPages+2) * Linux::page_size());
+#endif
+
size_t threadStackSizeInBytes = ThreadStackSize * K;
if (threadStackSizeInBytes != 0 &&
threadStackSizeInBytes < os::Linux::min_stack_allowed) {
diff --git a/src/os_cpu/bsd_zero/vm/atomic_bsd_zero.inline.hpp b/src/os_cpu/bsd_zero/vm/atomic_bsd_zero.inline.hpp
--- a/src/os_cpu/bsd_zero/vm/atomic_bsd_zero.inline.hpp
+++ b/src/os_cpu/bsd_zero/vm/atomic_bsd_zero.inline.hpp
@@ -239,7 +239,9 @@
// operation. Note that some platforms only support this with the
// limitation that the only valid value to store is the immediate
// constant 1. There is a test for this in JNI_CreateJavaVM().
- return __sync_lock_test_and_set (dest, exchange_value);
+ jint result = __sync_lock_test_and_set (dest, exchange_value);
+ __sync_synchronize();
+ return result;
#endif // M68K
#endif // ARM
}
@@ -252,7 +254,9 @@
#ifdef M68K
return m68k_lock_test_and_set(dest, exchange_value);
#else
- return __sync_lock_test_and_set (dest, exchange_value);
+ intptr_t result = __sync_lock_test_and_set (dest, exchange_value);
+ __sync_synchronize();
+ return result;
#endif // M68K
#endif // ARM
}
diff --git a/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp b/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
--- a/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
+++ b/src/os_cpu/linux_zero/vm/atomic_linux_zero.inline.hpp
@@ -243,7 +243,9 @@
// operation. Note that some platforms only support this with the
// limitation that the only valid value to store is the immediate
// constant 1. There is a test for this in JNI_CreateJavaVM().
- return __sync_lock_test_and_set (dest, exchange_value);
+ jint result = __sync_lock_test_and_set (dest, exchange_value);
+ __sync_synchronize();
+ return result;
#endif // M68K
#endif // ARM
}
@@ -256,7 +258,9 @@
#ifdef M68K
return m68k_lock_test_and_set(dest, exchange_value);
#else
- return __sync_lock_test_and_set (dest, exchange_value);
+ intptr_t result = __sync_lock_test_and_set (dest, exchange_value);
+ __sync_synchronize();
+ return result;
#endif // M68K
#endif // ARM
}
diff --git a/src/os_cpu/linux_zero/vm/os_linux_zero.cpp b/src/os_cpu/linux_zero/vm/os_linux_zero.cpp
--- a/src/os_cpu/linux_zero/vm/os_linux_zero.cpp
+++ b/src/os_cpu/linux_zero/vm/os_linux_zero.cpp
@@ -317,15 +317,15 @@
///////////////////////////////////////////////////////////////////////////////
// thread stack
-#ifndef PPC
-size_t os::Linux::min_stack_allowed = 64 * K;
-#else
+#ifdef PPC
#ifdef _LP64
// Default for 64 bit must be at least 1600 K
size_t os::Linux::min_stack_allowed = 1664 * K;
#else
size_t os::Linux::min_stack_allowed = 1152 * K;
#endif
+#else
+size_t os::Linux::min_stack_allowed = 64 * K;
#endif
bool os::Linux::supports_variable_stack_size() {
@@ -540,3 +540,7 @@
}
};
#endif // !_LP64
+#ifndef PRODUCT
+void os::verify_stack_alignment() {
+}
+#endif
diff --git a/src/share/vm/interpreter/bytecodeInterpreter.cpp b/src/share/vm/interpreter/bytecodeInterpreter.cpp
--- a/src/share/vm/interpreter/bytecodeInterpreter.cpp
+++ b/src/share/vm/interpreter/bytecodeInterpreter.cpp
@@ -2100,8 +2100,7 @@
if ( *count_addr > 0 ) {
if ((Bytecodes::Code)opcode == Bytecodes::_putstatic) {
obj = (oop)NULL;
- }
- else {
+ } else {
if (cache->is_long() || cache->is_double()) {
obj = (oop) STACK_OBJECT(-3);
} else {
@@ -2122,7 +2121,7 @@
// QQQ Need to make this as inlined as possible. Probably need to split all the bytecode cases
// out so c++ compiler has a chance for constant prop to fold everything possible away.
- oop obj;
+ oop obj,too;
int count;
TosState tos_type = cache->flag_state();
@@ -2146,8 +2145,9 @@
if (tos_type == itos) {
obj->release_int_field_put(field_offset, STACK_INT(-1));
} else if (tos_type == atos) {
- VERIFY_OOP(STACK_OBJECT(-1));
- obj->release_obj_field_put(field_offset, STACK_OBJECT(-1));
+ too = (oop) STACK_OBJECT(-1);
+ VERIFY_OOP(too);
+ obj->release_obj_field_put(field_offset, too);
} else if (tos_type == btos) {
obj->release_byte_field_put(field_offset, STACK_INT(-1));
} else if (tos_type == ltos) {
@@ -2166,7 +2166,8 @@
if (tos_type == itos) {
obj->int_field_put(field_offset, STACK_INT(-1));
} else if (tos_type == atos) {
- VERIFY_OOP(STACK_OBJECT(-1));
+ too = (oop) STACK_OBJECT(-1);
+ VERIFY_OOP(too);
// On IA64 we perform all stores of references with release semantics.
// This guarantees that everybody using this reference sees a fully
// initialized object. On PPC64 we emit a storestore barrier after
@@ -2292,7 +2293,8 @@
}
CASE(_checkcast):
if (STACK_OBJECT(-1) != NULL) {
- VERIFY_OOP(STACK_OBJECT(-1));
+ oop too = (oop) STACK_OBJECT(-1);
+ VERIFY_OOP(too);
u2 index = Bytes::get_Java_u2(pc+1);
// Constant pool may have actual klass or unresolved klass. If it is
// unresolved we must resolve it.
@@ -2329,7 +2331,8 @@
// Profile instanceof with null_seen and receiver.
BI_PROFILE_UPDATE_INSTANCEOF(/*null_seen=*/true, NULL);
} else {
- VERIFY_OOP(STACK_OBJECT(-1));
+ oop too = (oop) STACK_OBJECT(-1);
+ VERIFY_OOP(too);
u2 index = Bytes::get_Java_u2(pc+1);
// Constant pool may have actual klass or unresolved klass. If it is
// unresolved we must resolve it.
@@ -2558,7 +2561,8 @@
// another compliant java compiler.
if (cache->is_forced_virtual()) {
methodOop callee;
- CHECK_NULL(STACK_OBJECT(-(cache->parameter_size())));
+ oop too = (oop) STACK_OBJECT(-(cache->parameter_size()));
+ CHECK_NULL(too);
if (cache->is_vfinal()) {
callee = cache->f2_as_vfinal_method();
// Profile 'special case of invokeinterface' final call.
@@ -2645,7 +2649,8 @@
{
methodOop callee;
if ((Bytecodes::Code)opcode == Bytecodes::_invokevirtual) {
- CHECK_NULL(STACK_OBJECT(-(cache->parameter_size())));
+ oop too = (oop) STACK_OBJECT(-(cache->parameter_size()));
+ CHECK_NULL(too);
if (cache->is_vfinal()) {
callee = cache->f2_as_vfinal_method();
// Profile final call.
@@ -2684,7 +2689,8 @@
}
} else {
if ((Bytecodes::Code)opcode == Bytecodes::_invokespecial) {
- CHECK_NULL(STACK_OBJECT(-(cache->parameter_size())));
+ oop too = (oop) STACK_OBJECT(-(cache->parameter_size()));
+ CHECK_NULL(too);
}
callee = cache->f1_as_method();
diff --git a/src/share/vm/utilities/macros.hpp b/src/share/vm/utilities/macros.hpp
--- a/src/share/vm/utilities/macros.hpp
+++ b/src/share/vm/utilities/macros.hpp
@@ -234,11 +234,16 @@
#define PPC_ONLY(code) code
#define NOT_PPC(code)
#else
-#undef PPC
+
+#ifdef PPC
+#error "PPC is either 32- or 64-bit."
+#endif
+
#define PPC_ONLY(code)
#define NOT_PPC(code) code
#endif
+
#ifdef PPC32
#define PPC32_ONLY(code) code
#define NOT_PPC32(code)
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