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8b2e1419cf
premature, these libraries will be going away for the 2.0 release. Other arrangements for profiling, gc, etc. should be made in the next few months. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31807 91177308-0d34-0410-b5e6-96231b3b80d8
55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
//===- Exception.cpp - Generic language-independent exceptions ------------===//
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//
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// This file defines the the shared data structures used by all language
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// specific exception handling runtime libraries.
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//
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//===----------------------------------------------------------------------===//
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#include "Exception.h"
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// Thread local state for exception handling. FIXME: This should really be made
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// thread-local!
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// UncaughtExceptionStack - The stack of exceptions currently being thrown.
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static llvm_exception *UncaughtExceptionStack = 0;
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// __llvm_eh_has_uncaught_exception - This is used to implement
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// std::uncaught_exception.
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//
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bool __llvm_eh_has_uncaught_exception() throw() {
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return UncaughtExceptionStack != 0;
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}
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// __llvm_eh_current_uncaught_exception - This function checks to see if the
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// current uncaught exception is of the specified language type. If so, it
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// returns a pointer to the exception area data.
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//
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void *__llvm_eh_current_uncaught_exception_type(unsigned HandlerType) throw() {
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if (UncaughtExceptionStack->ExceptionType == HandlerType)
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return UncaughtExceptionStack+1;
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return 0;
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}
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// __llvm_eh_add_uncaught_exception - This adds the specified exception to the
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// top of the uncaught exception stack. The exception should not already be on
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// the stack!
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void __llvm_eh_add_uncaught_exception(llvm_exception *E) throw() {
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E->Next = UncaughtExceptionStack;
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UncaughtExceptionStack = E;
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}
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// __llvm_eh_get_uncaught_exception - Returns the current uncaught exception.
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// There must be an uncaught exception for this to work!
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llvm_exception *__llvm_eh_get_uncaught_exception() throw() {
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return UncaughtExceptionStack;
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}
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// __llvm_eh_pop_from_uncaught_stack - Remove the current uncaught exception
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// from the top of the stack.
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llvm_exception *__llvm_eh_pop_from_uncaught_stack() throw() {
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llvm_exception *E = __llvm_eh_get_uncaught_exception();
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UncaughtExceptionStack = E->Next;
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return E;
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}
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