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Allow user-specified program entry point for llvm-rtdyld.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129446 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2011-04-13 15:38:30 +00:00
parent 69e813282d
commit 6b32e7e213
1 changed files with 8 additions and 3 deletions
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11
tools/llvm-rtdyld/llvm-rtdyld.cpp
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@ -38,6 +38,11 @@ Action(cl::desc("Action to perform:"),
"Load, link, and execute the inputs."), "Load, link, and execute the inputs."),
clEnumValEnd)); clEnumValEnd));
static cl::opt<std::string>
EntryPoint("entry",
cl::desc("Function to call as entry point."),
cl::init("_main"));
/* *** */ /* *** */
// A trivial memory manager that doesn't do anything fancy, just uses the // A trivial memory manager that doesn't do anything fancy, just uses the
@ -93,10 +98,10 @@ static int executeInput() {
// Resolve all the relocations we can. // Resolve all the relocations we can.
Dyld.resolveRelocations(); Dyld.resolveRelocations();
// Get the address of "_main". // Get the address of the entry point (_main by default).
void *MainAddress = Dyld.getSymbolAddress("_main"); void *MainAddress = Dyld.getSymbolAddress(EntryPoint);
if (MainAddress == 0) if (MainAddress == 0)
return Error("no definition for '_main'"); return Error("no definition for '" + EntryPoint + "'");
// Invalidate the instruction cache for each loaded function. // Invalidate the instruction cache for each loaded function.
for (unsigned i = 0, e = MemMgr->FunctionMemory.size(); i != e; ++i) { for (unsigned i = 0, e = MemMgr->FunctionMemory.size(); i != e; ++i) {