[patch libstdc++]: Fix LLP64 pointer-size issues for cxxabi, eh_alloc, and hash_bytes
Kai Tietz
ktietz70@googlemail.com
Fri Dec 21 08:00:00 GMT 2012
Hello,
this patch fixes some remaining issues with pointer-sizes for llp64
abi in libstdc++.
ChangeLog
2012-12-21 Kai Tietz
* config/os/mingw32/os_defines.h (_GLIBCXX_LLP64): Define if llp64
abi is used.
* config/os/mingw32-w64/os_defines.h: Likewise.
* libsupc++/cxxabi.h (__base_class_type_info): Change
type __offset_flags to intptr_t.
* libsupc++/eh_alloc.cc (EMERGENCY_OBJ_SIZE): Define proper
for llp64 abi.
(EMERGENCY_OBJ_COUNT): Likewise.
(bitmask_type): Likewise.
* ibsupc++/hash_bytes.cc (_Hash_bytes): Handle llp64.
Tested for i686-w64-mingw32, x86_64-w64-mingw32, and
x86_64-unknown-linux-gnu. Ok for apply?
Regards,
Kai
Index: config/os/mingw32/os_defines.h
===================================================================
--- config/os/mingw32/os_defines.h (Revision 194655)
+++ config/os/mingw32/os_defines.h (Arbeitskopie)
@@ -72,4 +72,8 @@
#define _GLIBCXX_CDTOR_CALLABI __thiscall
#endif
+#ifdef __x86_64__
+#define _GLIBCXX_LLP64 1
#endif
+
+#endif
Index: config/os/mingw32-w64/os_defines.h
===================================================================
--- config/os/mingw32-w64/os_defines.h (Revision 194655)
+++ config/os/mingw32-w64/os_defines.h (Arbeitskopie)
@@ -74,4 +74,8 @@
#define _GLIBCXX_CDTOR_CALLABI __thiscall
#endif
+#ifdef __x86_64__
+#define _GLIBCXX_LLP64 1
#endif
+
+#endif
Index: libsupc++/cxxabi.h
===================================================================
--- libsupc++/cxxabi.h (Revision 194655)
+++ libsupc++/cxxabi.h (Arbeitskopie)
@@ -356,7 +356,7 @@ namespace __cxxabiv1
{
public:
const __class_type_info* __base_type; // Base class type.
- long __offset_flags; // Offset and info.
+ intptr_t __offset_flags; // Offset and info.
enum __offset_flags_masks
{
Index: libsupc++/eh_alloc.cc
===================================================================
--- libsupc++/eh_alloc.cc (Revision 194655)
+++ libsupc++/eh_alloc.cc (Arbeitskopie)
@@ -60,7 +60,7 @@ using namespace __cxxabiv1;
#if INT_MAX == 32767
# define EMERGENCY_OBJ_SIZE 128
# define EMERGENCY_OBJ_COUNT 16
-#elif LONG_MAX == 2147483647
+#elif !defined (_GLIBCXX_LLP64) && LONG_MAX == 2147483647
# define EMERGENCY_OBJ_SIZE 512
# define EMERGENCY_OBJ_COUNT 32
#else
@@ -76,8 +76,12 @@ using namespace __cxxabiv1;
#if INT_MAX == 32767 || EMERGENCY_OBJ_COUNT <= 32
typedef unsigned int bitmask_type;
#else
+#if defined (_GLIBCXX_LLP64)
+typedef unsigned long long bitmask_type;
+#else
typedef unsigned long bitmask_type;
#endif
+#endif
typedef char one_buffer[EMERGENCY_OBJ_SIZE] __attribute__((aligned));
Index: libsupc++/hash_bytes.cc
===================================================================
--- libsupc++/hash_bytes.cc (Revision 194655)
+++ libsupc++/hash_bytes.cc (Arbeitskopie)
@@ -128,7 +128,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
size_t
_Hash_bytes(const void* ptr, size_t len, size_t seed)
{
- static const size_t mul = (0xc6a4a793UL << 32UL) + 0x5bd1e995UL;
+ static const size_t mul = (((size_t) 0xc6a4a793UL) << 32UL)
+ + (size_t) 0x5bd1e995UL;
const char* const buf = static_cast<const char*>(ptr);
// Remove the bytes not divisible by the sizeof(size_t). This
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