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[Orc] Use the 64-bit versions of FXSAVE/FXRSTOR for JIT reentry.

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llvm-svn: 235325
This commit is contained in:
Lang Hames 2015-04-20 18:25:44 +00:00
parent 8e43f16a62
commit e77a58f25d
1 changed files with 16 additions and 16 deletions
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32
lib/ExecutionEngine/Orc/OrcTargetSupport.cpp
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@ -56,12 +56,12 @@ void OrcX86_64::insertResolverBlock(
// Start the resolver function.
AsmStream << ResolverBlockName << ":\n"
<< " pushq %rbp\n"
<< " movq %rsp, %rbp\n";
<< " pushq %rbp\n"
<< " movq %rsp, %rbp\n";
// Store the GPRs.
for (const auto &GPR : GPRs)
AsmStream << " pushq %" << GPR << "\n";
AsmStream << " pushq %" << GPR << "\n";
// Store floating-point state with FXSAVE.
// Note: We need to keep the stack 16-byte aligned, so if we've emitted an odd
@ -69,30 +69,30 @@ void OrcX86_64::insertResolverBlock(
// an extra 64 bits of padding to the FXSave area.
unsigned Padding = (GPRs.size() + 1) % 2 ? 8 : 0;
unsigned FXSaveSize = 512 + Padding;
AsmStream << " subq $" << FXSaveSize << ", %rsp\n"
<< " fxsave (%rsp)\n"
AsmStream << " subq $" << FXSaveSize << ", %rsp\n"
<< " fxsave64 (%rsp)\n"
// Load callback manager address, compute trampoline address, call JIT.
<< " lea jit_callback_manager_addr(%rip), %rdi\n"
<< " movq (%rdi), %rdi\n"
<< " movq 0x8(%rbp), %rsi\n"
<< " subq $" << X86_64_TrampolineLength << ", %rsi\n"
<< " movabsq $" << CallbackAddr << ", %rax\n"
<< " callq *%rax\n"
<< " lea jit_callback_manager_addr(%rip), %rdi\n"
<< " movq (%rdi), %rdi\n"
<< " movq 0x8(%rbp), %rsi\n"
<< " subq $" << X86_64_TrampolineLength << ", %rsi\n"
<< " movabsq $" << CallbackAddr << ", %rax\n"
<< " callq *%rax\n"
// Replace the return to the trampoline with the return address of the
// compiled function body.
<< " movq %rax, 0x8(%rbp)\n"
<< " movq %rax, 0x8(%rbp)\n"
// Restore the floating point state.
<< " fxrstor (%rsp)\n"
<< " addq $" << FXSaveSize << ", %rsp\n";
<< " fxrstor64 (%rsp)\n"
<< " addq $" << FXSaveSize << ", %rsp\n";
for (const auto &GPR : make_range(GPRs.rbegin(), GPRs.rend()))
AsmStream << " popq %" << GPR << "\n";
AsmStream << " popq %" << GPR << "\n";
// Restore original RBP and return to compiled function body.
AsmStream << " popq %rbp\n"
AsmStream << " popq %rbp\n"
<< " retq\n";
M.appendModuleInlineAsm(AsmStream.str());