[WebAssembly] __USING_WASM_EXCEPTIONS__ -> __WASM_EXCEPTIONS__ #92840
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We've decided to change `__USING_WASM_EXCEPTIONS__` preprocessor to `__WASM_EXCEPTIONS__` given that it's more concise.
|
@llvm/pr-subscribers-libunwind @llvm/pr-subscribers-libcxxabi Author: Heejin Ahn (aheejin) ChangesWe've decided to change Full diff: https://github.com/llvm/llvm-project/pull/92840.diff 6 Files Affected:
diff --git a/libcxxabi/include/cxxabi.h b/libcxxabi/include/cxxabi.h
index d0701181751c5..9d9beecf751fc 100644
--- a/libcxxabi/include/cxxabi.h
+++ b/libcxxabi/include/cxxabi.h
@@ -53,7 +53,7 @@ __cxa_init_primary_exception(void* object, std::type_info* tinfo, void(_LIBCXXAB
// 2.4.3 Throwing the Exception Object
extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void
__cxa_throw(void *thrown_exception, std::type_info *tinfo,
-#ifdef __USING_WASM_EXCEPTIONS__
+#ifdef __WASM_EXCEPTIONS__
// In Wasm, a destructor returns its argument
void *(_LIBCXXABI_DTOR_FUNC *dest)(void *));
#else
diff --git a/libcxxabi/src/cxa_exception.cpp b/libcxxabi/src/cxa_exception.cpp
index 65e9f4504ddad..3141d50a6bb92 100644
--- a/libcxxabi/src/cxa_exception.cpp
+++ b/libcxxabi/src/cxa_exception.cpp
@@ -267,7 +267,7 @@ will call terminate, assuming that there was no handler for the
exception.
*/
void
-#ifdef __USING_WASM_EXCEPTIONS__
+#ifdef __WASM_EXCEPTIONS__
// In Wasm, a destructor returns its argument
__cxa_throw(void *thrown_object, std::type_info *tinfo, void *(_LIBCXXABI_DTOR_FUNC *dest)(void *)) {
#else
diff --git a/libcxxabi/src/cxa_exception.h b/libcxxabi/src/cxa_exception.h
index 10712f6f47bb5..7800b940b83f7 100644
--- a/libcxxabi/src/cxa_exception.h
+++ b/libcxxabi/src/cxa_exception.h
@@ -43,7 +43,7 @@ struct _LIBCXXABI_HIDDEN __cxa_exception {
// Manage the exception object itself.
std::type_info *exceptionType;
-#ifdef __USING_WASM_EXCEPTIONS__
+#ifdef __WASM_EXCEPTIONS__
// In Wasm, a destructor returns its argument
void *(_LIBCXXABI_DTOR_FUNC *exceptionDestructor)(void *);
#else
diff --git a/libcxxabi/src/cxa_personality.cpp b/libcxxabi/src/cxa_personality.cpp
index d95d781319401..843a18a4cbd8a 100644
--- a/libcxxabi/src/cxa_personality.cpp
+++ b/libcxxabi/src/cxa_personality.cpp
@@ -70,7 +70,7 @@ extern "C" EXCEPTION_DISPOSITION _GCC_specific_handler(PEXCEPTION_RECORD,
+------------------+--+-----+-----+------------------------+--------------------------+
| callSiteTableLength | (ULEB128) | Call Site Table length, used to find Action table |
+---------------------+-----------+---------------------------------------------------+
-#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__USING_WASM_EXCEPTIONS__)
+#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__WASM_EXCEPTIONS__)
+---------------------+-----------+------------------------------------------------+
| Beginning of Call Site Table The current ip lies within the |
| ... (start, length) range of one of these |
@@ -84,7 +84,7 @@ extern "C" EXCEPTION_DISPOSITION _GCC_specific_handler(PEXCEPTION_RECORD,
| +-------------+---------------------------------+------------------------------+ |
| ... |
+----------------------------------------------------------------------------------+
-#else // __USING_SJLJ_EXCEPTIONS__ || __USING_WASM_EXCEPTIONS__
+#else // __USING_SJLJ_EXCEPTIONS__ || __WASM_EXCEPTIONS__
+---------------------+-----------+------------------------------------------------+
| Beginning of Call Site Table The current ip is a 1-based index into |
| ... this table. Or it is -1 meaning no |
@@ -97,7 +97,7 @@ extern "C" EXCEPTION_DISPOSITION _GCC_specific_handler(PEXCEPTION_RECORD,
| +-------------+---------------------------------+------------------------------+ |
| ... |
+----------------------------------------------------------------------------------+
-#endif // __USING_SJLJ_EXCEPTIONS__ || __USING_WASM_EXCEPTIONS__
+#endif // __USING_SJLJ_EXCEPTIONS__ || __WASM_EXCEPTIONS__
+---------------------------------------------------------------------+
| Beginning of Action Table ttypeIndex == 0 : cleanup |
| ... ttypeIndex > 0 : catch |
@@ -547,7 +547,7 @@ void
set_registers(_Unwind_Exception* unwind_exception, _Unwind_Context* context,
const scan_results& results)
{
-#if defined(__USING_SJLJ_EXCEPTIONS__) || defined(__USING_WASM_EXCEPTIONS__)
+#if defined(__USING_SJLJ_EXCEPTIONS__) || defined(__WASM_EXCEPTIONS__)
#define __builtin_eh_return_data_regno(regno) regno
#elif defined(__ibmxl__)
// IBM xlclang++ compiler does not support __builtin_eh_return_data_regno.
@@ -642,7 +642,7 @@ static void scan_eh_tab(scan_results &results, _Unwind_Action actions,
// Get beginning current frame's code (as defined by the
// emitted dwarf code)
uintptr_t funcStart = _Unwind_GetRegionStart(context);
-#if defined(__USING_SJLJ_EXCEPTIONS__) || defined(__USING_WASM_EXCEPTIONS__)
+#if defined(__USING_SJLJ_EXCEPTIONS__) || defined(__WASM_EXCEPTIONS__)
if (ip == uintptr_t(-1))
{
// no action
@@ -652,9 +652,9 @@ static void scan_eh_tab(scan_results &results, _Unwind_Action actions,
else if (ip == 0)
call_terminate(native_exception, unwind_exception);
// ip is 1-based index into call site table
-#else // !__USING_SJLJ_EXCEPTIONS__ && !__USING_WASM_EXCEPTIONS__
+#else // !__USING_SJLJ_EXCEPTIONS__ && !__WASM_EXCEPTIONS__
uintptr_t ipOffset = ip - funcStart;
-#endif // !__USING_SJLJ_EXCEPTIONS__ && !__USING_WASM_EXCEPTIONS__
+#endif // !__USING_SJLJ_EXCEPTIONS__ && !__WASM_EXCEPTIONS__
const uint8_t* classInfo = NULL;
// Note: See JITDwarfEmitter::EmitExceptionTable(...) for corresponding
// dwarf emission
@@ -675,7 +675,7 @@ static void scan_eh_tab(scan_results &results, _Unwind_Action actions,
// Walk call-site table looking for range that
// includes current PC.
uint8_t callSiteEncoding = *lsda++;
-#if defined(__USING_SJLJ_EXCEPTIONS__) || defined(__USING_WASM_EXCEPTIONS__)
+#if defined(__USING_SJLJ_EXCEPTIONS__) || defined(__WASM_EXCEPTIONS__)
(void)callSiteEncoding; // When using SjLj/Wasm exceptions, callSiteEncoding is never used
#endif
uint32_t callSiteTableLength = static_cast<uint32_t>(readULEB128(&lsda));
@@ -686,7 +686,7 @@ static void scan_eh_tab(scan_results &results, _Unwind_Action actions,
while (callSitePtr < callSiteTableEnd)
{
// There is one entry per call site.
-#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__USING_WASM_EXCEPTIONS__)
+#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__WASM_EXCEPTIONS__)
// The call sites are non-overlapping in [start, start+length)
// The call sites are ordered in increasing value of start
uintptr_t start = readEncodedPointer(&callSitePtr, callSiteEncoding);
@@ -694,15 +694,15 @@ static void scan_eh_tab(scan_results &results, _Unwind_Action actions,
uintptr_t landingPad = readEncodedPointer(&callSitePtr, callSiteEncoding);
uintptr_t actionEntry = readULEB128(&callSitePtr);
if ((start <= ipOffset) && (ipOffset < (start + length)))
-#else // __USING_SJLJ_EXCEPTIONS__ || __USING_WASM_EXCEPTIONS__
+#else // __USING_SJLJ_EXCEPTIONS__ || __WASM_EXCEPTIONS__
// ip is 1-based index into this table
uintptr_t landingPad = readULEB128(&callSitePtr);
uintptr_t actionEntry = readULEB128(&callSitePtr);
if (--ip == 0)
-#endif // __USING_SJLJ_EXCEPTIONS__ || __USING_WASM_EXCEPTIONS__
+#endif // __USING_SJLJ_EXCEPTIONS__ || __WASM_EXCEPTIONS__
{
// Found the call site containing ip.
-#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__USING_WASM_EXCEPTIONS__)
+#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__WASM_EXCEPTIONS__)
if (landingPad == 0)
{
// No handler here
@@ -710,9 +710,9 @@ static void scan_eh_tab(scan_results &results, _Unwind_Action actions,
return;
}
landingPad = (uintptr_t)lpStart + landingPad;
-#else // __USING_SJLJ_EXCEPTIONS__ || __USING_WASM_EXCEPTIONS__
+#else // __USING_SJLJ_EXCEPTIONS__ || __WASM_EXCEPTIONS__
++landingPad;
-#endif // __USING_SJLJ_EXCEPTIONS__ || __USING_WASM_EXCEPTIONS__
+#endif // __USING_SJLJ_EXCEPTIONS__ || __WASM_EXCEPTIONS__
results.landingPad = landingPad;
if (actionEntry == 0)
{
@@ -838,7 +838,7 @@ static void scan_eh_tab(scan_results &results, _Unwind_Action actions,
action += actionOffset;
} // there is no break out of this loop, only return
}
-#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__USING_WASM_EXCEPTIONS__)
+#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__WASM_EXCEPTIONS__)
else if (ipOffset < start)
{
// There is no call site for this ip
@@ -846,7 +846,7 @@ static void scan_eh_tab(scan_results &results, _Unwind_Action actions,
// Possible stack corruption.
call_terminate(native_exception, unwind_exception);
}
-#endif // !__USING_SJLJ_EXCEPTIONS__ && !__USING_WASM_EXCEPTIONS__
+#endif // !__USING_SJLJ_EXCEPTIONS__ && !__WASM_EXCEPTIONS__
} // there might be some tricky cases which break out of this loop
// It is possible that no eh table entry specify how to handle
@@ -903,7 +903,7 @@ _UA_CLEANUP_PHASE
*/
#if !defined(_LIBCXXABI_ARM_EHABI)
-#ifdef __USING_WASM_EXCEPTIONS__
+#ifdef __WASM_EXCEPTIONS__
_Unwind_Reason_Code __gxx_personality_wasm0
#elif defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__)
static _Unwind_Reason_Code __gxx_personality_imp
@@ -972,7 +972,7 @@ __gxx_personality_v0
exc->languageSpecificData = results.languageSpecificData;
exc->catchTemp = reinterpret_cast<void*>(results.landingPad);
exc->adjustedPtr = results.adjustedPtr;
-#ifdef __USING_WASM_EXCEPTIONS__
+#ifdef __WASM_EXCEPTIONS__
// Wasm only uses a single phase (_UA_SEARCH_PHASE), so save the
// results here.
set_registers(unwind_exception, context, results);
diff --git a/libunwind/src/Unwind-wasm.c b/libunwind/src/Unwind-wasm.c
index f7f39d38b59c1..b18b32c5d1784 100644
--- a/libunwind/src/Unwind-wasm.c
+++ b/libunwind/src/Unwind-wasm.c
@@ -14,7 +14,7 @@
#include "config.h"
-#ifdef __USING_WASM_EXCEPTIONS__
+#ifdef __WASM_EXCEPTIONS__
#include "unwind.h"
#include <threads.h>
@@ -120,4 +120,4 @@ _Unwind_GetRegionStart(struct _Unwind_Context *context) {
return 0;
}
-#endif // defined(__USING_WASM_EXCEPTIONS__)
+#endif // defined(__WASM_EXCEPTIONS__)
diff --git a/libunwind/src/libunwind.cpp b/libunwind/src/libunwind.cpp
index 217dde9098637..561c68eb33e28 100644
--- a/libunwind/src/libunwind.cpp
+++ b/libunwind/src/libunwind.cpp
@@ -26,7 +26,7 @@
#include <sanitizer/asan_interface.h>
#endif
-#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__USING_WASM_EXCEPTIONS__)
+#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__WASM_EXCEPTIONS__)
#include "AddressSpace.hpp"
#include "UnwindCursor.hpp"
@@ -348,7 +348,7 @@ void __unw_remove_dynamic_eh_frame_section(unw_word_t eh_frame_start) {
#endif // defined(_LIBUNWIND_SUPPORT_DWARF_UNWIND)
#endif // !defined(__USING_SJLJ_EXCEPTIONS__) &&
- // !defined(__USING_WASM_EXCEPTIONS__)
+ // !defined(__WASM_EXCEPTIONS__)
#ifdef __APPLE__
|
You can test this locally with the following command:git-clang-format --diff f6ff87dd90074b694e420d93389c749189bca0ec 478a176f3670266c835fa0fbe6448964d5c2bfe8 -- libcxxabi/include/cxxabi.h libcxxabi/src/cxa_exception.cpp libcxxabi/src/cxa_exception.h libcxxabi/src/cxa_personality.cpp libunwind/src/Unwind-wasm.c libunwind/src/libunwind.cppView the diff from clang-format here.diff --git a/libcxxabi/include/cxxabi.h b/libcxxabi/include/cxxabi.h
index 9d9beecf75..58e240cdf3 100644
--- a/libcxxabi/include/cxxabi.h
+++ b/libcxxabi/include/cxxabi.h
@@ -51,14 +51,13 @@ extern _LIBCXXABI_FUNC_VIS __cxa_exception*
__cxa_init_primary_exception(void* object, std::type_info* tinfo, void(_LIBCXXABI_DTOR_FUNC* dest)(void*)) throw();
// 2.4.3 Throwing the Exception Object
-extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void
-__cxa_throw(void *thrown_exception, std::type_info *tinfo,
-#ifdef __WASM_EXCEPTIONS__
- // In Wasm, a destructor returns its argument
- void *(_LIBCXXABI_DTOR_FUNC *dest)(void *));
-#else
+extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_NORETURN void __cxa_throw(void* thrown_exception, std::type_info* tinfo,
+# ifdef __WASM_EXCEPTIONS__
+ // In Wasm, a destructor returns its argument
+ void*(_LIBCXXABI_DTOR_FUNC* dest)(void*));
+# else
void (_LIBCXXABI_DTOR_FUNC *dest)(void *));
-#endif
+# endif
// 2.5.3 Exception Handlers
extern _LIBCXXABI_FUNC_VIS void *
diff --git a/libcxxabi/src/cxa_exception.cpp b/libcxxabi/src/cxa_exception.cpp
index 3141d50a6b..3889fef1d6 100644
--- a/libcxxabi/src/cxa_exception.cpp
+++ b/libcxxabi/src/cxa_exception.cpp
@@ -269,7 +269,7 @@ exception.
void
#ifdef __WASM_EXCEPTIONS__
// In Wasm, a destructor returns its argument
-__cxa_throw(void *thrown_object, std::type_info *tinfo, void *(_LIBCXXABI_DTOR_FUNC *dest)(void *)) {
+__cxa_throw(void* thrown_object, std::type_info* tinfo, void*(_LIBCXXABI_DTOR_FUNC* dest)(void*)) {
#else
__cxa_throw(void *thrown_object, std::type_info *tinfo, void (_LIBCXXABI_DTOR_FUNC *dest)(void *)) {
#endif
diff --git a/libcxxabi/src/cxa_personality.cpp b/libcxxabi/src/cxa_personality.cpp
index 843a18a4cb..eb18932ef0 100644
--- a/libcxxabi/src/cxa_personality.cpp
+++ b/libcxxabi/src/cxa_personality.cpp
@@ -548,7 +548,7 @@ set_registers(_Unwind_Exception* unwind_exception, _Unwind_Context* context,
const scan_results& results)
{
#if defined(__USING_SJLJ_EXCEPTIONS__) || defined(__WASM_EXCEPTIONS__)
-#define __builtin_eh_return_data_regno(regno) regno
+# define __builtin_eh_return_data_regno(regno) regno
#elif defined(__ibmxl__)
// IBM xlclang++ compiler does not support __builtin_eh_return_data_regno.
#define __builtin_eh_return_data_regno(regno) regno + 3
@@ -694,157 +694,133 @@ static void scan_eh_tab(scan_results &results, _Unwind_Action actions,
uintptr_t landingPad = readEncodedPointer(&callSitePtr, callSiteEncoding);
uintptr_t actionEntry = readULEB128(&callSitePtr);
if ((start <= ipOffset) && (ipOffset < (start + length)))
-#else // __USING_SJLJ_EXCEPTIONS__ || __WASM_EXCEPTIONS__
- // ip is 1-based index into this table
+#else // __USING_SJLJ_EXCEPTIONS__ || __WASM_EXCEPTIONS__ \
+ // ip is 1-based index into this table
uintptr_t landingPad = readULEB128(&callSitePtr);
uintptr_t actionEntry = readULEB128(&callSitePtr);
if (--ip == 0)
#endif // __USING_SJLJ_EXCEPTIONS__ || __WASM_EXCEPTIONS__
{
- // Found the call site containing ip.
+ // Found the call site containing ip.
#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__WASM_EXCEPTIONS__)
- if (landingPad == 0)
- {
- // No handler here
- results.reason = _URC_CONTINUE_UNWIND;
- return;
- }
- landingPad = (uintptr_t)lpStart + landingPad;
+ if (landingPad == 0) {
+ // No handler here
+ results.reason = _URC_CONTINUE_UNWIND;
+ return;
+ }
+ landingPad = (uintptr_t)lpStart + landingPad;
#else // __USING_SJLJ_EXCEPTIONS__ || __WASM_EXCEPTIONS__
- ++landingPad;
+ ++landingPad;
#endif // __USING_SJLJ_EXCEPTIONS__ || __WASM_EXCEPTIONS__
- results.landingPad = landingPad;
- if (actionEntry == 0)
- {
- // Found a cleanup
- results.reason = (actions & _UA_SEARCH_PHASE) ? _URC_CONTINUE_UNWIND : _URC_HANDLER_FOUND;
+ results.landingPad = landingPad;
+ if (actionEntry == 0) {
+ // Found a cleanup
+ results.reason = (actions & _UA_SEARCH_PHASE) ? _URC_CONTINUE_UNWIND : _URC_HANDLER_FOUND;
+ return;
+ }
+ // Convert 1-based byte offset into
+ const uint8_t* action = actionTableStart + (actionEntry - 1);
+ bool hasCleanup = false;
+ // Scan action entries until you find a matching handler, cleanup, or the end of action list
+ while (true) {
+ const uint8_t* actionRecord = action;
+ int64_t ttypeIndex = readSLEB128(&action);
+ if (ttypeIndex > 0) {
+ // Found a catch, does it actually catch?
+ // First check for catch (...)
+ const __shim_type_info* catchType =
+ get_shim_type_info(static_cast<uint64_t>(ttypeIndex), classInfo, ttypeEncoding, native_exception,
+ unwind_exception, base);
+ if (catchType == 0) {
+ // Found catch (...) catches everything, including
+ // foreign exceptions. This is search phase, cleanup
+ // phase with foreign exception, or forced unwinding.
+ assert(actions & (_UA_SEARCH_PHASE | _UA_HANDLER_FRAME | _UA_FORCE_UNWIND));
+ results.ttypeIndex = ttypeIndex;
+ results.actionRecord = actionRecord;
+ results.adjustedPtr = get_thrown_object_ptr(unwind_exception);
+ results.reason = _URC_HANDLER_FOUND;
return;
- }
- // Convert 1-based byte offset into
- const uint8_t* action = actionTableStart + (actionEntry - 1);
- bool hasCleanup = false;
- // Scan action entries until you find a matching handler, cleanup, or the end of action list
- while (true)
- {
- const uint8_t* actionRecord = action;
- int64_t ttypeIndex = readSLEB128(&action);
- if (ttypeIndex > 0)
- {
- // Found a catch, does it actually catch?
- // First check for catch (...)
- const __shim_type_info* catchType =
- get_shim_type_info(static_cast<uint64_t>(ttypeIndex),
- classInfo, ttypeEncoding,
- native_exception, unwind_exception,
- base);
- if (catchType == 0)
- {
- // Found catch (...) catches everything, including
- // foreign exceptions. This is search phase, cleanup
- // phase with foreign exception, or forced unwinding.
- assert(actions & (_UA_SEARCH_PHASE | _UA_HANDLER_FRAME |
- _UA_FORCE_UNWIND));
- results.ttypeIndex = ttypeIndex;
- results.actionRecord = actionRecord;
- results.adjustedPtr =
- get_thrown_object_ptr(unwind_exception);
- results.reason = _URC_HANDLER_FOUND;
- return;
- }
- // Else this is a catch (T) clause and will never
- // catch a foreign exception
- else if (native_exception)
- {
- __cxa_exception* exception_header = (__cxa_exception*)(unwind_exception+1) - 1;
- void* adjustedPtr = get_thrown_object_ptr(unwind_exception);
- const __shim_type_info* excpType =
- static_cast<const __shim_type_info*>(exception_header->exceptionType);
- if (adjustedPtr == 0 || excpType == 0)
- {
- // Something very bad happened
- call_terminate(native_exception, unwind_exception);
- }
- if (catchType->can_catch(excpType, adjustedPtr))
- {
- // Found a matching handler. This is either search
- // phase or forced unwinding.
- assert(actions &
- (_UA_SEARCH_PHASE | _UA_FORCE_UNWIND));
- results.ttypeIndex = ttypeIndex;
- results.actionRecord = actionRecord;
- results.adjustedPtr = adjustedPtr;
- results.reason = _URC_HANDLER_FOUND;
- return;
- }
- }
- // Scan next action ...
+ }
+ // Else this is a catch (T) clause and will never
+ // catch a foreign exception
+ else if (native_exception) {
+ __cxa_exception* exception_header = (__cxa_exception*)(unwind_exception + 1) - 1;
+ void* adjustedPtr = get_thrown_object_ptr(unwind_exception);
+ const __shim_type_info* excpType =
+ static_cast<const __shim_type_info*>(exception_header->exceptionType);
+ if (adjustedPtr == 0 || excpType == 0) {
+ // Something very bad happened
+ call_terminate(native_exception, unwind_exception);
}
- else if (ttypeIndex < 0)
- {
- // Found an exception specification.
- if (actions & _UA_FORCE_UNWIND) {
- // Skip if forced unwinding.
- } else if (native_exception) {
- // Does the exception spec catch this native exception?
- __cxa_exception* exception_header = (__cxa_exception*)(unwind_exception+1) - 1;
- void* adjustedPtr = get_thrown_object_ptr(unwind_exception);
- const __shim_type_info* excpType =
- static_cast<const __shim_type_info*>(exception_header->exceptionType);
- if (adjustedPtr == 0 || excpType == 0)
- {
- // Something very bad happened
- call_terminate(native_exception, unwind_exception);
- }
- if (exception_spec_can_catch(ttypeIndex, classInfo,
- ttypeEncoding, excpType,
- adjustedPtr,
- unwind_exception, base))
- {
- // Native exception caught by exception
- // specification.
- assert(actions & _UA_SEARCH_PHASE);
- results.ttypeIndex = ttypeIndex;
- results.actionRecord = actionRecord;
- results.adjustedPtr = adjustedPtr;
- results.reason = _URC_HANDLER_FOUND;
- return;
- }
- } else {
- // foreign exception caught by exception spec
- results.ttypeIndex = ttypeIndex;
- results.actionRecord = actionRecord;
- results.adjustedPtr =
- get_thrown_object_ptr(unwind_exception);
- results.reason = _URC_HANDLER_FOUND;
- return;
- }
- // Scan next action ...
- } else {
- hasCleanup = true;
+ if (catchType->can_catch(excpType, adjustedPtr)) {
+ // Found a matching handler. This is either search
+ // phase or forced unwinding.
+ assert(actions & (_UA_SEARCH_PHASE | _UA_FORCE_UNWIND));
+ results.ttypeIndex = ttypeIndex;
+ results.actionRecord = actionRecord;
+ results.adjustedPtr = adjustedPtr;
+ results.reason = _URC_HANDLER_FOUND;
+ return;
}
- const uint8_t* temp = action;
- int64_t actionOffset = readSLEB128(&temp);
- if (actionOffset == 0)
- {
- // End of action list. If this is phase 2 and we have found
- // a cleanup (ttypeIndex=0), return _URC_HANDLER_FOUND;
- // otherwise return _URC_CONTINUE_UNWIND.
- results.reason = hasCleanup && actions & _UA_CLEANUP_PHASE
- ? _URC_HANDLER_FOUND
- : _URC_CONTINUE_UNWIND;
- return;
+ }
+ // Scan next action ...
+ } else if (ttypeIndex < 0) {
+ // Found an exception specification.
+ if (actions & _UA_FORCE_UNWIND) {
+ // Skip if forced unwinding.
+ } else if (native_exception) {
+ // Does the exception spec catch this native exception?
+ __cxa_exception* exception_header = (__cxa_exception*)(unwind_exception + 1) - 1;
+ void* adjustedPtr = get_thrown_object_ptr(unwind_exception);
+ const __shim_type_info* excpType =
+ static_cast<const __shim_type_info*>(exception_header->exceptionType);
+ if (adjustedPtr == 0 || excpType == 0) {
+ // Something very bad happened
+ call_terminate(native_exception, unwind_exception);
+ }
+ if (exception_spec_can_catch(ttypeIndex, classInfo, ttypeEncoding, excpType, adjustedPtr,
+ unwind_exception, base)) {
+ // Native exception caught by exception
+ // specification.
+ assert(actions & _UA_SEARCH_PHASE);
+ results.ttypeIndex = ttypeIndex;
+ results.actionRecord = actionRecord;
+ results.adjustedPtr = adjustedPtr;
+ results.reason = _URC_HANDLER_FOUND;
+ return;
}
- // Go to next action
- action += actionOffset;
- } // there is no break out of this loop, only return
+ } else {
+ // foreign exception caught by exception spec
+ results.ttypeIndex = ttypeIndex;
+ results.actionRecord = actionRecord;
+ results.adjustedPtr = get_thrown_object_ptr(unwind_exception);
+ results.reason = _URC_HANDLER_FOUND;
+ return;
+ }
+ // Scan next action ...
+ } else {
+ hasCleanup = true;
+ }
+ const uint8_t* temp = action;
+ int64_t actionOffset = readSLEB128(&temp);
+ if (actionOffset == 0) {
+ // End of action list. If this is phase 2 and we have found
+ // a cleanup (ttypeIndex=0), return _URC_HANDLER_FOUND;
+ // otherwise return _URC_CONTINUE_UNWIND.
+ results.reason = hasCleanup && actions & _UA_CLEANUP_PHASE ? _URC_HANDLER_FOUND : _URC_CONTINUE_UNWIND;
+ return;
+ }
+ // Go to next action
+ action += actionOffset;
+ } // there is no break out of this loop, only return
}
#if !defined(__USING_SJLJ_EXCEPTIONS__) && !defined(__WASM_EXCEPTIONS__)
- else if (ipOffset < start)
- {
- // There is no call site for this ip
- // Something bad has happened. We should never get here.
- // Possible stack corruption.
- call_terminate(native_exception, unwind_exception);
+ else if (ipOffset < start) {
+ // There is no call site for this ip
+ // Something bad has happened. We should never get here.
+ // Possible stack corruption.
+ call_terminate(native_exception, unwind_exception);
}
#endif // !__USING_SJLJ_EXCEPTIONS__ && !__WASM_EXCEPTIONS__
} // there might be some tricky cases which break out of this loop
@@ -903,7 +879,7 @@ _UA_CLEANUP_PHASE
*/
#if !defined(_LIBCXXABI_ARM_EHABI)
-#ifdef __WASM_EXCEPTIONS__
+# ifdef __WASM_EXCEPTIONS__
_Unwind_Reason_Code __gxx_personality_wasm0
#elif defined(__SEH__) && !defined(__USING_SJLJ_EXCEPTIONS__)
static _Unwind_Reason_Code __gxx_personality_imp
@@ -972,7 +948,7 @@ __gxx_personality_v0
exc->languageSpecificData = results.languageSpecificData;
exc->catchTemp = reinterpret_cast<void*>(results.landingPad);
exc->adjustedPtr = results.adjustedPtr;
-#ifdef __WASM_EXCEPTIONS__
+# ifdef __WASM_EXCEPTIONS__
// Wasm only uses a single phase (_UA_SEARCH_PHASE), so save the
// results here.
set_registers(unwind_exception, context, results);
|
sbc100
approved these changes
May 21, 2024
|
It is hard to fix the clang-format errors because the modified files generally don't conform to the clang-format style anyway, so clang-format my change currently affects hundreds of unrelated lines. aheejin@aheejin:~/llvm-project/libunwind$ git clang-format main
changed files:
libcxxabi/include/cxxabi.h
libcxxabi/src/cxa_exception.cpp
libcxxabi/src/cxa_personality.cpp
aheejin@aheejin:~/llvm-project/libunwind$ git diff --stat
libcxxabi/include/cxxabi.h | 13 +-
libcxxabi/src/cxa_exception.cpp | 2 +-
libcxxabi/src/cxa_personality.cpp | 256 ++++++++++++++++++----------------------
3 files changed, 123 insertions(+), 148 deletions(-) |
I think in these cases is fine to ignore the warnings to fit in with existing style. |
|
The other CI failure doesn't seem to be related. Merging. |
aheejin
added a commit
to emscripten-core/emscripten
that referenced
this pull request
Nov 20, 2024
Other than these two PRs I submitted to upstream LLVM, all other changes are unrelated upstream changes. llvm/llvm-project#92192 llvm/llvm-project#92840 This PR was created by running https://github.com/emscripten-core/emscripten/blob/main/system/lib/update_libunwind.py script.
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We've decided to change
__USING_WASM_EXCEPTIONS__preprocessor to__WASM_EXCEPTIONS__given that it's more concise.