1 #include "llvm/ADT/Triple.h"
2 #include "llvm/ExecutionEngine/Orc/OrcTargetSupport.h"
5 using namespace llvm::orc;
9 std::array<const char *, 12> X86GPRsToSave = {{
10 "rbp", "rbx", "r12", "r13", "r14", "r15", // Callee saved.
11 "rdi", "rsi", "rdx", "rcx", "r8", "r9", // Int args.
14 std::array<const char *, 8> X86XMMsToSave = {{
15 "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7" // FP args
18 template <typename OStream> unsigned saveX86Regs(OStream &OS) {
19 for (const auto &GPR : X86GPRsToSave)
20 OS << " pushq %" << GPR << "\n";
22 OS << " subq $" << (16 * X86XMMsToSave.size()) << ", %rsp\n";
24 for (unsigned i = 0; i < X86XMMsToSave.size(); ++i)
25 OS << " movdqu %" << X86XMMsToSave[i] << ", "
26 << (16 * (X86XMMsToSave.size() - i - 1)) << "(%rsp)\n";
28 return (8 * X86GPRsToSave.size()) + (16 * X86XMMsToSave.size());
31 template <typename OStream> void restoreX86Regs(OStream &OS) {
32 for (unsigned i = 0; i < X86XMMsToSave.size(); ++i)
33 OS << " movdqu " << (16 * i) << "(%rsp), %"
34 << X86XMMsToSave[(X86XMMsToSave.size() - i - 1)] << "\n";
35 OS << " addq $" << (16 * X86XMMsToSave.size()) << ", %rsp\n";
37 for (unsigned i = 0; i < X86GPRsToSave.size(); ++i)
38 OS << " popq %" << X86GPRsToSave[X86GPRsToSave.size() - i - 1] << "\n";
41 template <typename TargetT>
42 uint64_t executeCompileCallback(JITCompileCallbackManagerBase *JCBM,
43 TargetAddress CallbackID) {
44 return JCBM->executeCompileCallback(CallbackID);
52 const char* OrcX86_64::ResolverBlockName = "orc_resolver_block";
54 void OrcX86_64::insertResolverBlock(
55 Module &M, JITCompileCallbackManagerBase &JCBM) {
56 const unsigned X86_64_TrampolineLength = 6;
57 auto CallbackPtr = executeCompileCallback<OrcX86_64>;
58 uint64_t CallbackAddr =
59 static_cast<uint64_t>(reinterpret_cast<uintptr_t>(CallbackPtr));
61 std::ostringstream AsmStream;
62 Triple TT(M.getTargetTriple());
64 if (TT.getOS() == Triple::Darwin)
65 AsmStream << ".section __TEXT,__text,regular,pure_instructions\n"
66 << ".align 4, 0x90\n";
68 AsmStream << ".text\n"
69 << ".align 16, 0x90\n";
71 AsmStream << "jit_callback_manager_addr:\n"
72 << " .quad " << &JCBM << "\n"
73 << ResolverBlockName << ":\n";
75 uint64_t ReturnAddrOffset = saveX86Regs(AsmStream);
77 // Compute index, load object address, and call JIT.
78 AsmStream << " leaq jit_callback_manager_addr(%rip), %rdi\n"
79 << " movq (%rdi), %rdi\n"
80 << " movq " << ReturnAddrOffset << "(%rsp), %rsi\n"
81 << " subq $" << X86_64_TrampolineLength << ", %rsi\n"
82 << " movabsq $" << CallbackAddr << ", %rax\n"
84 << " movq %rax, " << ReturnAddrOffset << "(%rsp)\n";
86 restoreX86Regs(AsmStream);
88 AsmStream << " retq\n";
90 M.appendModuleInlineAsm(AsmStream.str());
93 OrcX86_64::LabelNameFtor
94 OrcX86_64::insertCompileCallbackTrampolines(Module &M,
95 TargetAddress ResolverBlockAddr,
97 unsigned StartIndex) {
98 const char *ResolverBlockPtrName = "Lorc_resolve_block_addr";
100 std::ostringstream AsmStream;
101 Triple TT(M.getTargetTriple());
103 if (TT.getOS() == Triple::Darwin)
104 AsmStream << ".section __TEXT,__text,regular,pure_instructions\n"
105 << ".align 4, 0x90\n";
107 AsmStream << ".text\n"
108 << ".align 16, 0x90\n";
110 AsmStream << ResolverBlockPtrName << ":\n"
111 << " .quad " << ResolverBlockAddr << "\n";
115 std::ostringstream LabelStream;
116 LabelStream << "orc_jcc_" << (StartIndex + I);
117 return LabelStream.str();
120 for (unsigned I = 0; I < NumCalls; ++I)
121 AsmStream << GetLabelName(I) << ":\n"
122 << " callq *" << ResolverBlockPtrName << "(%rip)\n";
124 M.appendModuleInlineAsm(AsmStream.str());
129 } // End namespace orc.
130 } // End namespace llvm.