6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-09-24 23:28:41 +00:00
Code Issues Projects Releases Wiki Activity

Adding multiple module support for MCJIT.

Browse Source 
Tests to follow.

PIC with small code model and  EH frame handling will not work with multiple modules.  There are also some rough edges to be smoothed out for remote target support.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191722 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Kaylor
2013-10-01 01:47:35 +00:00
parent 451c71d67b
commit 8e9ec01534
8 changed files with 447 additions and 121 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
lib/ExecutionEngine/RTDyldMemoryManager.cpp
View File

@@ -68,8 +68,10 @@ static int jit_noop() {
return 0;
}
void *RTDyldMemoryManager::getPointerToNamedFunction(const std::string &Name,
bool AbortOnFailure) {
uint64_t RTDyldMemoryManager::getSymbolAddress(const std::string &Name) {
// This implementation assumes that the host program is the target.
// Clients generating code for a remote target should implement their own
// memory manager.
#if defined(__linux__)
//===--------------------------------------------------------------------===//
// Function stubs that are invoked instead of certain library calls
@@ -80,14 +82,14 @@ void *RTDyldMemoryManager::getPointerToNamedFunction(const std::string &Name,
// not inlined, and hiding their real definitions in a separate archive file
// that the dynamic linker can't see. For more info, search for
// 'libc_nonshared.a' on Google, or read http://llvm.org/PR274.
if (Name == "stat") return (void*)(intptr_t)&stat;
if (Name == "fstat") return (void*)(intptr_t)&fstat;
if (Name == "lstat") return (void*)(intptr_t)&lstat;
if (Name == "stat64") return (void*)(intptr_t)&stat64;
if (Name == "fstat64") return (void*)(intptr_t)&fstat64;
if (Name == "lstat64") return (void*)(intptr_t)&lstat64;
if (Name == "atexit") return (void*)(intptr_t)&atexit;
if (Name == "mknod") return (void*)(intptr_t)&mknod;
if (Name == "stat") return (uint64_t)&stat;
if (Name == "fstat") return (uint64_t)&fstat;
if (Name == "lstat") return (uint64_t)&lstat;
if (Name == "stat64") return (uint64_t)&stat64;
if (Name == "fstat64") return (uint64_t)&fstat64;
if (Name == "lstat64") return (uint64_t)&lstat64;
if (Name == "atexit") return (uint64_t)&atexit;
if (Name == "mknod") return (uint64_t)&mknod;
#endif // __linux__
// We should not invoke parent's ctors/dtors from generated main()!
@@ -96,23 +98,31 @@ void *RTDyldMemoryManager::getPointerToNamedFunction(const std::string &Name,
// (and register wrong callee's dtors with atexit(3)).
// We expect ExecutionEngine::runStaticConstructorsDestructors()
// is called before ExecutionEngine::runFunctionAsMain() is called.
if (Name == "__main") return (void*)(intptr_t)&jit_noop;
if (Name == "__main") return (uint64_t)&jit_noop;
const char *NameStr = Name.c_str();
void *Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(NameStr);
if (Ptr) return Ptr;
if (Ptr)
return (uint64_t)Ptr;
// If it wasn't found and if it starts with an underscore ('_') character,
// try again without the underscore.
if (NameStr[0] == '_') {
Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(NameStr+1);
if (Ptr) return Ptr;
if (Ptr)
return (uint64_t)Ptr;
}
if (AbortOnFailure)
report_fatal_error("Program used external function '" + Name +
"' which could not be resolved!");
return 0;
}
void *RTDyldMemoryManager::getPointerToNamedFunction(const std::string &Name,
bool AbortOnFailure) {
uint64_t Addr = getSymbolAddress(Name);
if (!Addr && AbortOnFailure)
report_fatal_error("Program used external function '" + Name +
"' which could not be resolved!");
return (void*)Addr;
}
} // namespace llvm