[Orc] Move delta-handling for trampoline sizes into the resolver block.
This is the first step towards adding a target-independent callback
handler API.
llvm-svn: 233049
diff --git a/llvm/lib/ExecutionEngine/Orc/OrcTargetSupport.cpp b/llvm/lib/ExecutionEngine/Orc/OrcTargetSupport.cpp
index b5dda8e..4932ec1 100644
--- a/llvm/lib/ExecutionEngine/Orc/OrcTargetSupport.cpp
+++ b/llvm/lib/ExecutionEngine/Orc/OrcTargetSupport.cpp
@@ -53,6 +53,7 @@
void OrcX86_64::insertResolverBlock(
Module &M, JITCompileCallbackManagerBase<OrcX86_64> &JCBM) {
+ const unsigned X86_64_TrampolineLength = 6;
auto CallbackPtr = executeCompileCallback<OrcX86_64>;
uint64_t CallbackAddr =
static_cast<uint64_t>(reinterpret_cast<uintptr_t>(CallbackPtr));
@@ -77,6 +78,7 @@
AsmStream << " leaq jit_callback_manager_addr(%rip), %rdi\n"
<< " movq (%rdi), %rdi\n"
<< " movq " << ReturnAddrOffset << "(%rsp), %rsi\n"
+ << " subq $" << X86_64_TrampolineLength << ", %rsi\n"
<< " movabsq $" << CallbackAddr << ", %rax\n"
<< " callq *%rax\n"
<< " movq %rax, " << ReturnAddrOffset << "(%rsp)\n";