| //===------------- OrcABISupport.cpp - ABI specific support code ----------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/ExecutionEngine/Orc/OrcABISupport.h" |
| #include "llvm/Support/Process.h" |
| |
| namespace llvm { |
| namespace orc { |
| |
| void OrcAArch64::writeResolverCode(uint8_t *ResolverMem, JITReentryFn ReentryFn, |
| void *CallbackMgr) { |
| |
| const uint32_t ResolverCode[] = { |
| // resolver_entry: |
| 0xa9bf47fd, // 0x000: stp x29, x17, [sp, #-16]! |
| 0x910003fd, // 0x004: mov x29, sp |
| 0xa9bf73fb, // 0x008: stp x27, x28, [sp, #-16]! |
| 0xa9bf6bf9, // 0x00c: stp x25, x26, [sp, #-16]! |
| 0xa9bf63f7, // 0x010: stp x23, x24, [sp, #-16]! |
| 0xa9bf5bf5, // 0x014: stp x21, x22, [sp, #-16]! |
| 0xa9bf53f3, // 0x018: stp x19, x20, [sp, #-16]! |
| 0xa9bf3fee, // 0x01c: stp x14, x15, [sp, #-16]! |
| 0xa9bf37ec, // 0x020: stp x12, x13, [sp, #-16]! |
| 0xa9bf2fea, // 0x024: stp x10, x11, [sp, #-16]! |
| 0xa9bf27e8, // 0x028: stp x8, x9, [sp, #-16]! |
| 0xa9bf1fe6, // 0x02c: stp x6, x7, [sp, #-16]! |
| 0xa9bf17e4, // 0x030: stp x4, x5, [sp, #-16]! |
| 0xa9bf0fe2, // 0x034: stp x2, x3, [sp, #-16]! |
| 0xa9bf07e0, // 0x038: stp x0, x1, [sp, #-16]! |
| 0xadbf7ffe, // 0x03c: stp q30, q31, [sp, #-32]! |
| 0xadbf77fc, // 0x040: stp q28, q29, [sp, #-32]! |
| 0xadbf6ffa, // 0x044: stp q26, q27, [sp, #-32]! |
| 0xadbf67f8, // 0x048: stp q24, q25, [sp, #-32]! |
| 0xadbf5ff6, // 0x04c: stp q22, q23, [sp, #-32]! |
| 0xadbf57f4, // 0x050: stp q20, q21, [sp, #-32]! |
| 0xadbf4ff2, // 0x054: stp q18, q19, [sp, #-32]! |
| 0xadbf47f0, // 0x058: stp q16, q17, [sp, #-32]! |
| 0xadbf3fee, // 0x05c: stp q14, q15, [sp, #-32]! |
| 0xadbf37ec, // 0x060: stp q12, q13, [sp, #-32]! |
| 0xadbf2fea, // 0x064: stp q10, q11, [sp, #-32]! |
| 0xadbf27e8, // 0x068: stp q8, q9, [sp, #-32]! |
| 0xadbf1fe6, // 0x06c: stp q6, q7, [sp, #-32]! |
| 0xadbf17e4, // 0x070: stp q4, q5, [sp, #-32]! |
| 0xadbf0fe2, // 0x074: stp q2, q3, [sp, #-32]! |
| 0xadbf07e0, // 0x078: stp q0, q1, [sp, #-32]! |
| 0x580004e0, // 0x07c: ldr x0, Lcallbackmgr |
| 0xaa1e03e1, // 0x080: mov x1, x30 |
| 0xd1003021, // 0x084: sub x1, x1, #12 |
| 0x58000442, // 0x088: ldr x2, Lreentry_fn_ptr |
| 0xd63f0040, // 0x08c: blr x2 |
| 0xaa0003f1, // 0x090: mov x17, x0 |
| 0xacc107e0, // 0x094: ldp q0, q1, [sp], #32 |
| 0xacc10fe2, // 0x098: ldp q2, q3, [sp], #32 |
| 0xacc117e4, // 0x09c: ldp q4, q5, [sp], #32 |
| 0xacc11fe6, // 0x0a0: ldp q6, q7, [sp], #32 |
| 0xacc127e8, // 0x0a4: ldp q8, q9, [sp], #32 |
| 0xacc12fea, // 0x0a8: ldp q10, q11, [sp], #32 |
| 0xacc137ec, // 0x0ac: ldp q12, q13, [sp], #32 |
| 0xacc13fee, // 0x0b0: ldp q14, q15, [sp], #32 |
| 0xacc147f0, // 0x0b4: ldp q16, q17, [sp], #32 |
| 0xacc14ff2, // 0x0b8: ldp q18, q19, [sp], #32 |
| 0xacc157f4, // 0x0bc: ldp q20, q21, [sp], #32 |
| 0xacc15ff6, // 0x0c0: ldp q22, q23, [sp], #32 |
| 0xacc167f8, // 0x0c4: ldp q24, q25, [sp], #32 |
| 0xacc16ffa, // 0x0c8: ldp q26, q27, [sp], #32 |
| 0xacc177fc, // 0x0cc: ldp q28, q29, [sp], #32 |
| 0xacc17ffe, // 0x0d0: ldp q30, q31, [sp], #32 |
| 0xa8c107e0, // 0x0d4: ldp x0, x1, [sp], #16 |
| 0xa8c10fe2, // 0x0d8: ldp x2, x3, [sp], #16 |
| 0xa8c117e4, // 0x0dc: ldp x4, x5, [sp], #16 |
| 0xa8c11fe6, // 0x0e0: ldp x6, x7, [sp], #16 |
| 0xa8c127e8, // 0x0e4: ldp x8, x9, [sp], #16 |
| 0xa8c12fea, // 0x0e8: ldp x10, x11, [sp], #16 |
| 0xa8c137ec, // 0x0ec: ldp x12, x13, [sp], #16 |
| 0xa8c13fee, // 0x0f0: ldp x14, x15, [sp], #16 |
| 0xa8c153f3, // 0x0f4: ldp x19, x20, [sp], #16 |
| 0xa8c15bf5, // 0x0f8: ldp x21, x22, [sp], #16 |
| 0xa8c163f7, // 0x0fc: ldp x23, x24, [sp], #16 |
| 0xa8c16bf9, // 0x100: ldp x25, x26, [sp], #16 |
| 0xa8c173fb, // 0x104: ldp x27, x28, [sp], #16 |
| 0xa8c17bfd, // 0x108: ldp x29, x30, [sp], #16 |
| 0xd65f0220, // 0x10c: ret x17 |
| 0x01234567, // 0x110: Lreentry_fn_ptr: |
| 0xdeadbeef, // 0x114: .quad 0 |
| 0x98765432, // 0x118: Lcallbackmgr: |
| 0xcafef00d // 0x11c: .quad 0 |
| }; |
| |
| const unsigned ReentryFnAddrOffset = 0x110; |
| const unsigned CallbackMgrAddrOffset = 0x118; |
| |
| memcpy(ResolverMem, ResolverCode, sizeof(ResolverCode)); |
| memcpy(ResolverMem + ReentryFnAddrOffset, &ReentryFn, sizeof(ReentryFn)); |
| memcpy(ResolverMem + CallbackMgrAddrOffset, &CallbackMgr, |
| sizeof(CallbackMgr)); |
| } |
| |
| void OrcAArch64::writeTrampolines(uint8_t *TrampolineMem, void *ResolverAddr, |
| unsigned NumTrampolines) { |
| |
| unsigned OffsetToPtr = alignTo(NumTrampolines * TrampolineSize, 8); |
| |
| memcpy(TrampolineMem + OffsetToPtr, &ResolverAddr, sizeof(void *)); |
| |
| // OffsetToPtr is actually the offset from the PC for the 2nd instruction, so |
| // subtract 32-bits. |
| OffsetToPtr -= 4; |
| |
| uint32_t *Trampolines = reinterpret_cast<uint32_t *>(TrampolineMem); |
| |
| for (unsigned I = 0; I < NumTrampolines; ++I, OffsetToPtr -= TrampolineSize) { |
| Trampolines[3 * I + 0] = 0xaa1e03f1; // mov x17, x30 |
| Trampolines[3 * I + 1] = 0x58000010 | (OffsetToPtr << 3); // adr x16, Lptr |
| Trampolines[3 * I + 2] = 0xd63f0200; // blr x16 |
| } |
| |
| } |
| |
| Error OrcAArch64::emitIndirectStubsBlock(IndirectStubsInfo &StubsInfo, |
| unsigned MinStubs, |
| void *InitialPtrVal) { |
| // Stub format is: |
| // |
| // .section __orc_stubs |
| // stub1: |
| // ldr x0, ptr1 ; PC-rel load of ptr1 |
| // br x0 ; Jump to resolver |
| // stub2: |
| // ldr x0, ptr2 ; PC-rel load of ptr2 |
| // br x0 ; Jump to resolver |
| // |
| // ... |
| // |
| // .section __orc_ptrs |
| // ptr1: |
| // .quad 0x0 |
| // ptr2: |
| // .quad 0x0 |
| // |
| // ... |
| |
| const unsigned StubSize = IndirectStubsInfo::StubSize; |
| |
| // Emit at least MinStubs, rounded up to fill the pages allocated. |
| static const unsigned PageSize = sys::Process::getPageSizeEstimate(); |
| unsigned NumPages = ((MinStubs * StubSize) + (PageSize - 1)) / PageSize; |
| unsigned NumStubs = (NumPages * PageSize) / StubSize; |
| |
| // Allocate memory for stubs and pointers in one call. |
| std::error_code EC; |
| auto StubsMem = sys::OwningMemoryBlock(sys::Memory::allocateMappedMemory( |
| 2 * NumPages * PageSize, nullptr, |
| sys::Memory::MF_READ | sys::Memory::MF_WRITE, EC)); |
| |
| if (EC) |
| return errorCodeToError(EC); |
| |
| // Create separate MemoryBlocks representing the stubs and pointers. |
| sys::MemoryBlock StubsBlock(StubsMem.base(), NumPages * PageSize); |
| sys::MemoryBlock PtrsBlock(static_cast<char *>(StubsMem.base()) + |
| NumPages * PageSize, |
| NumPages * PageSize); |
| |
| // Populate the stubs page stubs and mark it executable. |
| uint64_t *Stub = reinterpret_cast<uint64_t *>(StubsBlock.base()); |
| uint64_t PtrOffsetField = static_cast<uint64_t>(NumPages * PageSize) |
| << 3; |
| |
| for (unsigned I = 0; I < NumStubs; ++I) |
| Stub[I] = 0xd61f020058000010 | PtrOffsetField; |
| |
| if (auto EC = sys::Memory::protectMappedMemory( |
| StubsBlock, sys::Memory::MF_READ | sys::Memory::MF_EXEC)) |
| return errorCodeToError(EC); |
| |
| // Initialize all pointers to point at FailureAddress. |
| void **Ptr = reinterpret_cast<void **>(PtrsBlock.base()); |
| for (unsigned I = 0; I < NumStubs; ++I) |
| Ptr[I] = InitialPtrVal; |
| |
| StubsInfo = IndirectStubsInfo(NumStubs, std::move(StubsMem)); |
| |
| return Error::success(); |
| } |
| |
| void OrcX86_64_Base::writeTrampolines(uint8_t *TrampolineMem, |
| void *ResolverAddr, |
| unsigned NumTrampolines) { |
| |
| unsigned OffsetToPtr = NumTrampolines * TrampolineSize; |
| |
| memcpy(TrampolineMem + OffsetToPtr, &ResolverAddr, sizeof(void *)); |
| |
| uint64_t *Trampolines = reinterpret_cast<uint64_t *>(TrampolineMem); |
| uint64_t CallIndirPCRel = 0xf1c40000000015ff; |
| |
| for (unsigned I = 0; I < NumTrampolines; ++I, OffsetToPtr -= TrampolineSize) |
| Trampolines[I] = CallIndirPCRel | ((OffsetToPtr - 6) << 16); |
| } |
| |
| Error OrcX86_64_Base::emitIndirectStubsBlock(IndirectStubsInfo &StubsInfo, |
| unsigned MinStubs, |
| void *InitialPtrVal) { |
| // Stub format is: |
| // |
| // .section __orc_stubs |
| // stub1: |
| // jmpq *ptr1(%rip) |
| // .byte 0xC4 ; <- Invalid opcode padding. |
| // .byte 0xF1 |
| // stub2: |
| // jmpq *ptr2(%rip) |
| // |
| // ... |
| // |
| // .section __orc_ptrs |
| // ptr1: |
| // .quad 0x0 |
| // ptr2: |
| // .quad 0x0 |
| // |
| // ... |
| |
| const unsigned StubSize = IndirectStubsInfo::StubSize; |
| |
| // Emit at least MinStubs, rounded up to fill the pages allocated. |
| static const unsigned PageSize = sys::Process::getPageSizeEstimate(); |
| unsigned NumPages = ((MinStubs * StubSize) + (PageSize - 1)) / PageSize; |
| unsigned NumStubs = (NumPages * PageSize) / StubSize; |
| |
| // Allocate memory for stubs and pointers in one call. |
| std::error_code EC; |
| auto StubsMem = sys::OwningMemoryBlock(sys::Memory::allocateMappedMemory( |
| 2 * NumPages * PageSize, nullptr, |
| sys::Memory::MF_READ | sys::Memory::MF_WRITE, EC)); |
| |
| if (EC) |
| return errorCodeToError(EC); |
| |
| // Create separate MemoryBlocks representing the stubs and pointers. |
| sys::MemoryBlock StubsBlock(StubsMem.base(), NumPages * PageSize); |
| sys::MemoryBlock PtrsBlock(static_cast<char *>(StubsMem.base()) + |
| NumPages * PageSize, |
| NumPages * PageSize); |
| |
| // Populate the stubs page stubs and mark it executable. |
| uint64_t *Stub = reinterpret_cast<uint64_t *>(StubsBlock.base()); |
| uint64_t PtrOffsetField = static_cast<uint64_t>(NumPages * PageSize - 6) |
| << 16; |
| for (unsigned I = 0; I < NumStubs; ++I) |
| Stub[I] = 0xF1C40000000025ff | PtrOffsetField; |
| |
| if (auto EC = sys::Memory::protectMappedMemory( |
| StubsBlock, sys::Memory::MF_READ | sys::Memory::MF_EXEC)) |
| return errorCodeToError(EC); |
| |
| // Initialize all pointers to point at FailureAddress. |
| void **Ptr = reinterpret_cast<void **>(PtrsBlock.base()); |
| for (unsigned I = 0; I < NumStubs; ++I) |
| Ptr[I] = InitialPtrVal; |
| |
| StubsInfo = IndirectStubsInfo(NumStubs, std::move(StubsMem)); |
| |
| return Error::success(); |
| } |
| |
| void OrcX86_64_SysV::writeResolverCode(uint8_t *ResolverMem, |
| JITReentryFn ReentryFn, |
| void *CallbackMgr) { |
| |
| const uint8_t ResolverCode[] = { |
| // resolver_entry: |
| 0x55, // 0x00: pushq %rbp |
| 0x48, 0x89, 0xe5, // 0x01: movq %rsp, %rbp |
| 0x50, // 0x04: pushq %rax |
| 0x53, // 0x05: pushq %rbx |
| 0x51, // 0x06: pushq %rcx |
| 0x52, // 0x07: pushq %rdx |
| 0x56, // 0x08: pushq %rsi |
| 0x57, // 0x09: pushq %rdi |
| 0x41, 0x50, // 0x0a: pushq %r8 |
| 0x41, 0x51, // 0x0c: pushq %r9 |
| 0x41, 0x52, // 0x0e: pushq %r10 |
| 0x41, 0x53, // 0x10: pushq %r11 |
| 0x41, 0x54, // 0x12: pushq %r12 |
| 0x41, 0x55, // 0x14: pushq %r13 |
| 0x41, 0x56, // 0x16: pushq %r14 |
| 0x41, 0x57, // 0x18: pushq %r15 |
| 0x48, 0x81, 0xec, 0x08, 0x02, 0x00, 0x00, // 0x1a: subq 0x208, %rsp |
| 0x48, 0x0f, 0xae, 0x04, 0x24, // 0x21: fxsave64 (%rsp) |
| 0x48, 0xbf, // 0x26: movabsq <CBMgr>, %rdi |
| |
| // 0x28: Callback manager addr. |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| |
| 0x48, 0x8b, 0x75, 0x08, // 0x30: movq 8(%rbp), %rsi |
| 0x48, 0x83, 0xee, 0x06, // 0x34: subq $6, %rsi |
| 0x48, 0xb8, // 0x38: movabsq <REntry>, %rax |
| |
| // 0x3a: JIT re-entry fn addr: |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| |
| 0xff, 0xd0, // 0x42: callq *%rax |
| 0x48, 0x89, 0x45, 0x08, // 0x44: movq %rax, 8(%rbp) |
| 0x48, 0x0f, 0xae, 0x0c, 0x24, // 0x48: fxrstor64 (%rsp) |
| 0x48, 0x81, 0xc4, 0x08, 0x02, 0x00, 0x00, // 0x4d: addq 0x208, %rsp |
| 0x41, 0x5f, // 0x54: popq %r15 |
| 0x41, 0x5e, // 0x56: popq %r14 |
| 0x41, 0x5d, // 0x58: popq %r13 |
| 0x41, 0x5c, // 0x5a: popq %r12 |
| 0x41, 0x5b, // 0x5c: popq %r11 |
| 0x41, 0x5a, // 0x5e: popq %r10 |
| 0x41, 0x59, // 0x60: popq %r9 |
| 0x41, 0x58, // 0x62: popq %r8 |
| 0x5f, // 0x64: popq %rdi |
| 0x5e, // 0x65: popq %rsi |
| 0x5a, // 0x66: popq %rdx |
| 0x59, // 0x67: popq %rcx |
| 0x5b, // 0x68: popq %rbx |
| 0x58, // 0x69: popq %rax |
| 0x5d, // 0x6a: popq %rbp |
| 0xc3, // 0x6b: retq |
| }; |
| |
| const unsigned ReentryFnAddrOffset = 0x3a; |
| const unsigned CallbackMgrAddrOffset = 0x28; |
| |
| memcpy(ResolverMem, ResolverCode, sizeof(ResolverCode)); |
| memcpy(ResolverMem + ReentryFnAddrOffset, &ReentryFn, sizeof(ReentryFn)); |
| memcpy(ResolverMem + CallbackMgrAddrOffset, &CallbackMgr, |
| sizeof(CallbackMgr)); |
| } |
| |
| void OrcX86_64_Win32::writeResolverCode(uint8_t *ResolverMem, |
| JITReentryFn ReentryFn, |
| void *CallbackMgr) { |
| |
| // resolverCode is similar to OrcX86_64 with differences specific to windows x64 calling convention: |
| // arguments go into rcx, rdx and come in reverse order, shadow space allocation on stack |
| const uint8_t ResolverCode[] = { |
| // resolver_entry: |
| 0x55, // 0x00: pushq %rbp |
| 0x48, 0x89, 0xe5, // 0x01: movq %rsp, %rbp |
| 0x50, // 0x04: pushq %rax |
| 0x53, // 0x05: pushq %rbx |
| 0x51, // 0x06: pushq %rcx |
| 0x52, // 0x07: pushq %rdx |
| 0x56, // 0x08: pushq %rsi |
| 0x57, // 0x09: pushq %rdi |
| 0x41, 0x50, // 0x0a: pushq %r8 |
| 0x41, 0x51, // 0x0c: pushq %r9 |
| 0x41, 0x52, // 0x0e: pushq %r10 |
| 0x41, 0x53, // 0x10: pushq %r11 |
| 0x41, 0x54, // 0x12: pushq %r12 |
| 0x41, 0x55, // 0x14: pushq %r13 |
| 0x41, 0x56, // 0x16: pushq %r14 |
| 0x41, 0x57, // 0x18: pushq %r15 |
| 0x48, 0x81, 0xec, 0x08, 0x02, 0x00, 0x00, // 0x1a: subq 0x208, %rsp |
| 0x48, 0x0f, 0xae, 0x04, 0x24, // 0x21: fxsave64 (%rsp) |
| |
| 0x48, 0xb9, // 0x26: movabsq <CBMgr>, %rcx |
| // 0x28: Callback manager addr. |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| |
| 0x48, 0x8B, 0x55, 0x08, // 0x30: mov rdx, [rbp+0x8] |
| 0x48, 0x83, 0xea, 0x06, // 0x34: sub rdx, 0x6 |
| |
| 0x48, 0xb8, // 0x38: movabsq <REntry>, %rax |
| // 0x3a: JIT re-entry fn addr: |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| |
| // 0x42: sub rsp, 0x20 (Allocate shadow space) |
| 0x48, 0x83, 0xEC, 0x20, |
| 0xff, 0xd0, // 0x46: callq *%rax |
| |
| // 0x48: add rsp, 0x20 (Free shadow space) |
| 0x48, 0x83, 0xC4, 0x20, |
| |
| 0x48, 0x89, 0x45, 0x08, // 0x4C: movq %rax, 8(%rbp) |
| 0x48, 0x0f, 0xae, 0x0c, 0x24, // 0x50: fxrstor64 (%rsp) |
| 0x48, 0x81, 0xc4, 0x08, 0x02, 0x00, 0x00, // 0x55: addq 0x208, %rsp |
| 0x41, 0x5f, // 0x5C: popq %r15 |
| 0x41, 0x5e, // 0x5E: popq %r14 |
| 0x41, 0x5d, // 0x60: popq %r13 |
| 0x41, 0x5c, // 0x62: popq %r12 |
| 0x41, 0x5b, // 0x64: popq %r11 |
| 0x41, 0x5a, // 0x66: popq %r10 |
| 0x41, 0x59, // 0x68: popq %r9 |
| 0x41, 0x58, // 0x6a: popq %r8 |
| 0x5f, // 0x6c: popq %rdi |
| 0x5e, // 0x6d: popq %rsi |
| 0x5a, // 0x6e: popq %rdx |
| 0x59, // 0x6f: popq %rcx |
| 0x5b, // 0x70: popq %rbx |
| 0x58, // 0x71: popq %rax |
| 0x5d, // 0x72: popq %rbp |
| 0xc3, // 0x73: retq |
| }; |
| |
| |
| const unsigned ReentryFnAddrOffset = 0x3a; |
| const unsigned CallbackMgrAddrOffset = 0x28; |
| |
| memcpy(ResolverMem, ResolverCode, sizeof(ResolverCode)); |
| memcpy(ResolverMem + ReentryFnAddrOffset, &ReentryFn, sizeof(ReentryFn)); |
| memcpy(ResolverMem + CallbackMgrAddrOffset, &CallbackMgr, |
| sizeof(CallbackMgr)); |
| } |
| |
| void OrcI386::writeResolverCode(uint8_t *ResolverMem, JITReentryFn ReentryFn, |
| void *CallbackMgr) { |
| |
| const uint8_t ResolverCode[] = { |
| // resolver_entry: |
| 0x55, // 0x00: pushl %ebp |
| 0x89, 0xe5, // 0x01: movl %esp, %ebp |
| 0x54, // 0x03: pushl %esp |
| 0x83, 0xe4, 0xf0, // 0x04: andl $-0x10, %esp |
| 0x50, // 0x07: pushl %eax |
| 0x53, // 0x08: pushl %ebx |
| 0x51, // 0x09: pushl %ecx |
| 0x52, // 0x0a: pushl %edx |
| 0x56, // 0x0b: pushl %esi |
| 0x57, // 0x0c: pushl %edi |
| 0x81, 0xec, 0x18, 0x02, 0x00, 0x00, // 0x0d: subl $0x218, %esp |
| 0x0f, 0xae, 0x44, 0x24, 0x10, // 0x13: fxsave 0x10(%esp) |
| 0x8b, 0x75, 0x04, // 0x18: movl 0x4(%ebp), %esi |
| 0x83, 0xee, 0x05, // 0x1b: subl $0x5, %esi |
| 0x89, 0x74, 0x24, 0x04, // 0x1e: movl %esi, 0x4(%esp) |
| 0xc7, 0x04, 0x24, 0x00, 0x00, 0x00, |
| 0x00, // 0x22: movl <cbmgr>, (%esp) |
| 0xb8, 0x00, 0x00, 0x00, 0x00, // 0x29: movl <reentry>, %eax |
| 0xff, 0xd0, // 0x2e: calll *%eax |
| 0x89, 0x45, 0x04, // 0x30: movl %eax, 0x4(%ebp) |
| 0x0f, 0xae, 0x4c, 0x24, 0x10, // 0x33: fxrstor 0x10(%esp) |
| 0x81, 0xc4, 0x18, 0x02, 0x00, 0x00, // 0x38: addl $0x218, %esp |
| 0x5f, // 0x3e: popl %edi |
| 0x5e, // 0x3f: popl %esi |
| 0x5a, // 0x40: popl %edx |
| 0x59, // 0x41: popl %ecx |
| 0x5b, // 0x42: popl %ebx |
| 0x58, // 0x43: popl %eax |
| 0x8b, 0x65, 0xfc, // 0x44: movl -0x4(%ebp), %esp |
| 0x5d, // 0x48: popl %ebp |
| 0xc3 // 0x49: retl |
| }; |
| |
| const unsigned ReentryFnAddrOffset = 0x2a; |
| const unsigned CallbackMgrAddrOffset = 0x25; |
| |
| memcpy(ResolverMem, ResolverCode, sizeof(ResolverCode)); |
| memcpy(ResolverMem + ReentryFnAddrOffset, &ReentryFn, sizeof(ReentryFn)); |
| memcpy(ResolverMem + CallbackMgrAddrOffset, &CallbackMgr, |
| sizeof(CallbackMgr)); |
| } |
| |
| void OrcI386::writeTrampolines(uint8_t *TrampolineMem, void *ResolverAddr, |
| unsigned NumTrampolines) { |
| |
| uint64_t CallRelImm = 0xF1C4C400000000e8; |
| uint64_t Resolver = reinterpret_cast<uint64_t>(ResolverAddr); |
| uint64_t ResolverRel = |
| Resolver - reinterpret_cast<uint64_t>(TrampolineMem) - 5; |
| |
| uint64_t *Trampolines = reinterpret_cast<uint64_t *>(TrampolineMem); |
| for (unsigned I = 0; I < NumTrampolines; ++I, ResolverRel -= TrampolineSize) |
| Trampolines[I] = CallRelImm | (ResolverRel << 8); |
| } |
| |
| Error OrcI386::emitIndirectStubsBlock(IndirectStubsInfo &StubsInfo, |
| unsigned MinStubs, void *InitialPtrVal) { |
| // Stub format is: |
| // |
| // .section __orc_stubs |
| // stub1: |
| // jmpq *ptr1 |
| // .byte 0xC4 ; <- Invalid opcode padding. |
| // .byte 0xF1 |
| // stub2: |
| // jmpq *ptr2 |
| // |
| // ... |
| // |
| // .section __orc_ptrs |
| // ptr1: |
| // .quad 0x0 |
| // ptr2: |
| // .quad 0x0 |
| // |
| // ... |
| |
| const unsigned StubSize = IndirectStubsInfo::StubSize; |
| |
| // Emit at least MinStubs, rounded up to fill the pages allocated. |
| static const unsigned PageSize = sys::Process::getPageSizeEstimate(); |
| unsigned NumPages = ((MinStubs * StubSize) + (PageSize - 1)) / PageSize; |
| unsigned NumStubs = (NumPages * PageSize) / StubSize; |
| |
| // Allocate memory for stubs and pointers in one call. |
| std::error_code EC; |
| auto StubsMem = sys::OwningMemoryBlock(sys::Memory::allocateMappedMemory( |
| 2 * NumPages * PageSize, nullptr, |
| sys::Memory::MF_READ | sys::Memory::MF_WRITE, EC)); |
| |
| if (EC) |
| return errorCodeToError(EC); |
| |
| // Create separate MemoryBlocks representing the stubs and pointers. |
| sys::MemoryBlock StubsBlock(StubsMem.base(), NumPages * PageSize); |
| sys::MemoryBlock PtrsBlock(static_cast<char *>(StubsMem.base()) + |
| NumPages * PageSize, |
| NumPages * PageSize); |
| |
| // Populate the stubs page stubs and mark it executable. |
| uint64_t *Stub = reinterpret_cast<uint64_t *>(StubsBlock.base()); |
| uint64_t PtrAddr = reinterpret_cast<uint64_t>(PtrsBlock.base()); |
| for (unsigned I = 0; I < NumStubs; ++I, PtrAddr += 4) |
| Stub[I] = 0xF1C40000000025ff | (PtrAddr << 16); |
| |
| if (auto EC = sys::Memory::protectMappedMemory( |
| StubsBlock, sys::Memory::MF_READ | sys::Memory::MF_EXEC)) |
| return errorCodeToError(EC); |
| |
| // Initialize all pointers to point at FailureAddress. |
| void **Ptr = reinterpret_cast<void **>(PtrsBlock.base()); |
| for (unsigned I = 0; I < NumStubs; ++I) |
| Ptr[I] = InitialPtrVal; |
| |
| StubsInfo = IndirectStubsInfo(NumStubs, std::move(StubsMem)); |
| |
| return Error::success(); |
| } |
| |
| void OrcMips32_Base::writeResolverCode(uint8_t *ResolverMem, |
| JITReentryFn ReentryFn, |
| void *CallbackMgr, bool isBigEndian) { |
| |
| const uint32_t ResolverCode[] = { |
| // resolver_entry: |
| 0x27bdff98, // 0x00: addiu $sp,$sp,-104 |
| 0xafa20000, // 0x04: sw $v0,0($sp) |
| 0xafa30004, // 0x08: sw $v1,4($sp) |
| 0xafa40008, // 0x0c: sw $a0,8($sp) |
| 0xafa5000c, // 0x10: sw $a1,12($sp) |
| 0xafa60010, // 0x14: sw $a2,16($sp) |
| 0xafa70014, // 0x18: sw $a3,20($sp) |
| 0xafb00018, // 0x1c: sw $s0,24($sp) |
| 0xafb1001c, // 0x20: sw $s1,28($sp) |
| 0xafb20020, // 0x24: sw $s2,32($sp) |
| 0xafb30024, // 0x28: sw $s3,36($sp) |
| 0xafb40028, // 0x2c: sw $s4,40($sp) |
| 0xafb5002c, // 0x30: sw $s5,44($sp) |
| 0xafb60030, // 0x34: sw $s6,48($sp) |
| 0xafb70034, // 0x38: sw $s7,52($sp) |
| 0xafa80038, // 0x3c: sw $t0,56($sp) |
| 0xafa9003c, // 0x40: sw $t1,60($sp) |
| 0xafaa0040, // 0x44: sw $t2,64($sp) |
| 0xafab0044, // 0x48: sw $t3,68($sp) |
| 0xafac0048, // 0x4c: sw $t4,72($sp) |
| 0xafad004c, // 0x50: sw $t5,76($sp) |
| 0xafae0050, // 0x54: sw $t6,80($sp) |
| 0xafaf0054, // 0x58: sw $t7,84($sp) |
| 0xafb80058, // 0x5c: sw $t8,88($sp) |
| 0xafb9005c, // 0x60: sw $t9,92($sp) |
| 0xafbe0060, // 0x64: sw $fp,96($sp) |
| 0xafbf0064, // 0x68: sw $ra,100($sp) |
| |
| // Callback manager addr. |
| 0x00000000, // 0x6c: lui $a0,callbackmgr |
| 0x00000000, // 0x70: addiu $a0,$a0,callbackmgr |
| |
| 0x03e02825, // 0x74: move $a1, $ra |
| 0x24a5ffec, // 0x78: addiu $a1,$a1,-20 |
| |
| // JIT re-entry fn addr: |
| 0x00000000, // 0x7c: lui $t9,reentry |
| 0x00000000, // 0x80: addiu $t9,$t9,reentry |
| |
| 0x0320f809, // 0x84: jalr $t9 |
| 0x00000000, // 0x88: nop |
| 0x8fbf0064, // 0x8c: lw $ra,100($sp) |
| 0x8fbe0060, // 0x90: lw $fp,96($sp) |
| 0x8fb9005c, // 0x94: lw $t9,92($sp) |
| 0x8fb80058, // 0x98: lw $t8,88($sp) |
| 0x8faf0054, // 0x9c: lw $t7,84($sp) |
| 0x8fae0050, // 0xa0: lw $t6,80($sp) |
| 0x8fad004c, // 0xa4: lw $t5,76($sp) |
| 0x8fac0048, // 0xa8: lw $t4,72($sp) |
| 0x8fab0044, // 0xac: lw $t3,68($sp) |
| 0x8faa0040, // 0xb0: lw $t2,64($sp) |
| 0x8fa9003c, // 0xb4: lw $t1,60($sp) |
| 0x8fa80038, // 0xb8: lw $t0,56($sp) |
| 0x8fb70034, // 0xbc: lw $s7,52($sp) |
| 0x8fb60030, // 0xc0: lw $s6,48($sp) |
| 0x8fb5002c, // 0xc4: lw $s5,44($sp) |
| 0x8fb40028, // 0xc8: lw $s4,40($sp) |
| 0x8fb30024, // 0xcc: lw $s3,36($sp) |
| 0x8fb20020, // 0xd0: lw $s2,32($sp) |
| 0x8fb1001c, // 0xd4: lw $s1,28($sp) |
| 0x8fb00018, // 0xd8: lw $s0,24($sp) |
| 0x8fa70014, // 0xdc: lw $a3,20($sp) |
| 0x8fa60010, // 0xe0: lw $a2,16($sp) |
| 0x8fa5000c, // 0xe4: lw $a1,12($sp) |
| 0x8fa40008, // 0xe8: lw $a0,8($sp) |
| 0x27bd0068, // 0xec: addiu $sp,$sp,104 |
| 0x0300f825, // 0xf0: move $ra, $t8 |
| 0x03200008, // 0xf4: jr $t9 |
| 0x00000000, // 0xf8: move $t9, $v0/v1 |
| }; |
| |
| const unsigned ReentryFnAddrOffset = 0x7c; // JIT re-entry fn addr lui |
| const unsigned CallbackMgrAddrOffset = 0x6c; // Callback manager addr lui |
| const unsigned Offsett = 0xf8; |
| |
| memcpy(ResolverMem, ResolverCode, sizeof(ResolverCode)); |
| |
| // Depending on endian return value will be in v0 or v1. |
| uint32_t MoveVxT9 = isBigEndian ? 0x0060c825 : 0x0040c825; |
| memcpy(ResolverMem + Offsett, &MoveVxT9, sizeof(MoveVxT9)); |
| |
| uint64_t CallMgrAddr = reinterpret_cast<uint64_t>(CallbackMgr); |
| uint32_t CallMgrLUi = 0x3c040000 | (((CallMgrAddr + 0x8000) >> 16) & 0xFFFF); |
| uint32_t CallMgrADDiu = 0x24840000 | ((CallMgrAddr) & 0xFFFF); |
| memcpy(ResolverMem + CallbackMgrAddrOffset, &CallMgrLUi, sizeof(CallMgrLUi)); |
| memcpy(ResolverMem + CallbackMgrAddrOffset + 4, &CallMgrADDiu, |
| sizeof(CallMgrADDiu)); |
| |
| uint64_t ReentryAddr = reinterpret_cast<uint64_t>(ReentryFn); |
| uint32_t ReentryLUi = 0x3c190000 | (((ReentryAddr + 0x8000) >> 16) & 0xFFFF); |
| uint32_t ReentryADDiu = 0x27390000 | ((ReentryAddr) & 0xFFFF); |
| memcpy(ResolverMem + ReentryFnAddrOffset, &ReentryLUi, sizeof(ReentryLUi)); |
| memcpy(ResolverMem + ReentryFnAddrOffset + 4, &ReentryADDiu, |
| sizeof(ReentryADDiu)); |
| } |
| |
| void OrcMips32_Base::writeTrampolines(uint8_t *TrampolineMem, |
| void *ResolverAddr, |
| unsigned NumTrampolines) { |
| |
| uint32_t *Trampolines = reinterpret_cast<uint32_t *>(TrampolineMem); |
| uint64_t ResolveAddr = reinterpret_cast<uint64_t>(ResolverAddr); |
| uint32_t RHiAddr = ((ResolveAddr + 0x8000) >> 16); |
| |
| for (unsigned I = 0; I < NumTrampolines; ++I) { |
| Trampolines[5 * I + 0] = 0x03e0c025; // move $t8,$ra |
| Trampolines[5 * I + 1] = 0x3c190000 | (RHiAddr & 0xFFFF); // lui $t9,resolveAddr |
| Trampolines[5 * I + 2] = 0x27390000 | (ResolveAddr & 0xFFFF); // addiu $t9,$t9,resolveAddr |
| Trampolines[5 * I + 3] = 0x0320f809; // jalr $t9 |
| Trampolines[5 * I + 4] = 0x00000000; // nop |
| } |
| } |
| |
| Error OrcMips32_Base::emitIndirectStubsBlock(IndirectStubsInfo &StubsInfo, |
| unsigned MinStubs, |
| void *InitialPtrVal) { |
| // Stub format is: |
| // |
| // .section __orc_stubs |
| // stub1: |
| // lui $t9, ptr1 |
| // lw $t9, %lo(ptr1)($t9) |
| // jr $t9 |
| // stub2: |
| // lui $t9, ptr2 |
| // lw $t9,%lo(ptr1)($t9) |
| // jr $t9 |
| // |
| // ... |
| // |
| // .section __orc_ptrs |
| // ptr1: |
| // .word 0x0 |
| // ptr2: |
| // .word 0x0 |
| // |
| // ... |
| |
| const unsigned StubSize = IndirectStubsInfo::StubSize; |
| |
| // Emit at least MinStubs, rounded up to fill the pages allocated. |
| static const unsigned PageSize = sys::Process::getPageSizeEstimate(); |
| unsigned NumPages = ((MinStubs * StubSize) + (PageSize - 1)) / PageSize; |
| unsigned NumStubs = (NumPages * PageSize) / StubSize; |
| |
| // Allocate memory for stubs and pointers in one call. |
| std::error_code EC; |
| auto StubsMem = sys::OwningMemoryBlock(sys::Memory::allocateMappedMemory( |
| 2 * NumPages * PageSize, nullptr, |
| sys::Memory::MF_READ | sys::Memory::MF_WRITE, EC)); |
| |
| if (EC) |
| return errorCodeToError(EC); |
| |
| // Create separate MemoryBlocks representing the stubs and pointers. |
| sys::MemoryBlock StubsBlock(StubsMem.base(), NumPages * PageSize); |
| sys::MemoryBlock PtrsBlock(static_cast<char *>(StubsMem.base()) + |
| NumPages * PageSize, |
| NumPages * PageSize); |
| |
| // Populate the stubs page stubs and mark it executable. |
| uint32_t *Stub = reinterpret_cast<uint32_t *>(StubsBlock.base()); |
| uint64_t PtrAddr = reinterpret_cast<uint64_t>(Stub) + NumPages * PageSize; |
| |
| for (unsigned I = 0; I < NumStubs; ++I) { |
| uint32_t HiAddr = ((PtrAddr + 0x8000) >> 16); |
| Stub[4 * I + 0] = 0x3c190000 | (HiAddr & 0xFFFF); // lui $t9,ptr1 |
| Stub[4 * I + 1] = 0x8f390000 | (PtrAddr & 0xFFFF); // lw $t9,%lo(ptr1)($t9) |
| Stub[4 * I + 2] = 0x03200008; // jr $t9 |
| Stub[4 * I + 3] = 0x00000000; // nop |
| PtrAddr += 4; |
| } |
| |
| if (auto EC = sys::Memory::protectMappedMemory( |
| StubsBlock, sys::Memory::MF_READ | sys::Memory::MF_EXEC)) |
| return errorCodeToError(EC); |
| |
| // Initialize all pointers to point at FailureAddress. |
| void **Ptr = reinterpret_cast<void **>(PtrsBlock.base()); |
| for (unsigned I = 0; I < NumStubs; ++I) |
| Ptr[I] = InitialPtrVal; |
| |
| StubsInfo = IndirectStubsInfo(NumStubs, std::move(StubsMem)); |
| |
| return Error::success(); |
| } |
| |
| void OrcMips64::writeResolverCode(uint8_t *ResolverMem, JITReentryFn ReentryFn, |
| void *CallbackMgr) { |
| |
| const uint32_t ResolverCode[] = { |
| //resolver_entry: |
| 0x67bdff30, // 0x00: daddiu $sp,$sp,-208 |
| 0xffa20000, // 0x04: sd v0,0(sp) |
| 0xffa30008, // 0x08: sd v1,8(sp) |
| 0xffa40010, // 0x0c: sd a0,16(sp) |
| 0xffa50018, // 0x10: sd a1,24(sp) |
| 0xffa60020, // 0x14: sd a2,32(sp) |
| 0xffa70028, // 0x18: sd a3,40(sp) |
| 0xffa80030, // 0x1c: sd a4,48(sp) |
| 0xffa90038, // 0x20: sd a5,56(sp) |
| 0xffaa0040, // 0x24: sd a6,64(sp) |
| 0xffab0048, // 0x28: sd a7,72(sp) |
| 0xffac0050, // 0x2c: sd t0,80(sp) |
| 0xffad0058, // 0x30: sd t1,88(sp) |
| 0xffae0060, // 0x34: sd t2,96(sp) |
| 0xffaf0068, // 0x38: sd t3,104(sp) |
| 0xffb00070, // 0x3c: sd s0,112(sp) |
| 0xffb10078, // 0x40: sd s1,120(sp) |
| 0xffb20080, // 0x44: sd s2,128(sp) |
| 0xffb30088, // 0x48: sd s3,136(sp) |
| 0xffb40090, // 0x4c: sd s4,144(sp) |
| 0xffb50098, // 0x50: sd s5,152(sp) |
| 0xffb600a0, // 0x54: sd s6,160(sp) |
| 0xffb700a8, // 0x58: sd s7,168(sp) |
| 0xffb800b0, // 0x5c: sd t8,176(sp) |
| 0xffb900b8, // 0x60: sd t9,184(sp) |
| 0xffbe00c0, // 0x64: sd fp,192(sp) |
| 0xffbf00c8, // 0x68: sd ra,200(sp) |
| |
| // Callback manager addr. |
| 0x00000000, // 0x6c: lui $a0,heighest(callbackmgr) |
| 0x00000000, // 0x70: daddiu $a0,$a0,heigher(callbackmgr) |
| 0x00000000, // 0x74: dsll $a0,$a0,16 |
| 0x00000000, // 0x78: daddiu $a0,$a0,hi(callbackmgr) |
| 0x00000000, // 0x7c: dsll $a0,$a0,16 |
| 0x00000000, // 0x80: daddiu $a0,$a0,lo(callbackmgr) |
| |
| 0x03e02825, // 0x84: move $a1, $ra |
| 0x64a5ffdc, // 0x88: daddiu $a1,$a1,-36 |
| |
| // JIT re-entry fn addr: |
| 0x00000000, // 0x8c: lui $t9,reentry |
| 0x00000000, // 0x90: daddiu $t9,$t9,reentry |
| 0x00000000, // 0x94: dsll $t9,$t9, |
| 0x00000000, // 0x98: daddiu $t9,$t9, |
| 0x00000000, // 0x9c: dsll $t9,$t9, |
| 0x00000000, // 0xa0: daddiu $t9,$t9, |
| 0x0320f809, // 0xa4: jalr $t9 |
| 0x00000000, // 0xa8: nop |
| 0xdfbf00c8, // 0xac: ld ra, 200(sp) |
| 0xdfbe00c0, // 0xb0: ld fp, 192(sp) |
| 0xdfb900b8, // 0xb4: ld t9, 184(sp) |
| 0xdfb800b0, // 0xb8: ld t8, 176(sp) |
| 0xdfb700a8, // 0xbc: ld s7, 168(sp) |
| 0xdfb600a0, // 0xc0: ld s6, 160(sp) |
| 0xdfb50098, // 0xc4: ld s5, 152(sp) |
| 0xdfb40090, // 0xc8: ld s4, 144(sp) |
| 0xdfb30088, // 0xcc: ld s3, 136(sp) |
| 0xdfb20080, // 0xd0: ld s2, 128(sp) |
| 0xdfb10078, // 0xd4: ld s1, 120(sp) |
| 0xdfb00070, // 0xd8: ld s0, 112(sp) |
| 0xdfaf0068, // 0xdc: ld t3, 104(sp) |
| 0xdfae0060, // 0xe0: ld t2, 96(sp) |
| 0xdfad0058, // 0xe4: ld t1, 88(sp) |
| 0xdfac0050, // 0xe8: ld t0, 80(sp) |
| 0xdfab0048, // 0xec: ld a7, 72(sp) |
| 0xdfaa0040, // 0xf0: ld a6, 64(sp) |
| 0xdfa90038, // 0xf4: ld a5, 56(sp) |
| 0xdfa80030, // 0xf8: ld a4, 48(sp) |
| 0xdfa70028, // 0xfc: ld a3, 40(sp) |
| 0xdfa60020, // 0x100: ld a2, 32(sp) |
| 0xdfa50018, // 0x104: ld a1, 24(sp) |
| 0xdfa40010, // 0x108: ld a0, 16(sp) |
| 0xdfa30008, // 0x10c: ld v1, 8(sp) |
| 0x67bd00d0, // 0x110: daddiu $sp,$sp,208 |
| 0x0300f825, // 0x114: move $ra, $t8 |
| 0x03200008, // 0x118: jr $t9 |
| 0x0040c825, // 0x11c: move $t9, $v0 |
| }; |
| |
| const unsigned ReentryFnAddrOffset = 0x8c; // JIT re-entry fn addr lui |
| const unsigned CallbackMgrAddrOffset = 0x6c; // Callback manager addr lui |
| |
| memcpy(ResolverMem, ResolverCode, sizeof(ResolverCode)); |
| |
| uint64_t CallMgrAddr = reinterpret_cast<uint64_t>(CallbackMgr); |
| |
| uint32_t CallMgrLUi = |
| 0x3c040000 | (((CallMgrAddr + 0x800080008000) >> 48) & 0xFFFF); |
| uint32_t CallMgrDADDiu = |
| 0x64840000 | (((CallMgrAddr + 0x80008000) >> 32) & 0xFFFF); |
| uint32_t CallMgrDSLL = 0x00042438; |
| uint32_t CallMgrDADDiu2 = |
| 0x64840000 | ((((CallMgrAddr + 0x8000) >> 16) & 0xFFFF)); |
| uint32_t CallMgrDSLL2 = 0x00042438; |
| uint32_t CallMgrDADDiu3 = 0x64840000 | ((CallMgrAddr)&0xFFFF); |
| |
| memcpy(ResolverMem + CallbackMgrAddrOffset, &CallMgrLUi, sizeof(CallMgrLUi)); |
| memcpy(ResolverMem + (CallbackMgrAddrOffset + 4), &CallMgrDADDiu, |
| sizeof(CallMgrDADDiu)); |
| memcpy(ResolverMem + (CallbackMgrAddrOffset + 8), &CallMgrDSLL, |
| sizeof(CallMgrDSLL)); |
| memcpy(ResolverMem + (CallbackMgrAddrOffset + 12), &CallMgrDADDiu2, |
| sizeof(CallMgrDADDiu2)); |
| memcpy(ResolverMem + (CallbackMgrAddrOffset + 16), &CallMgrDSLL2, |
| sizeof(CallMgrDSLL2)); |
| memcpy(ResolverMem + (CallbackMgrAddrOffset + 20), &CallMgrDADDiu3, |
| sizeof(CallMgrDADDiu3)); |
| |
| uint64_t ReentryAddr = reinterpret_cast<uint64_t>(ReentryFn); |
| |
| uint32_t ReentryLUi = |
| 0x3c190000 | (((ReentryAddr + 0x800080008000) >> 48) & 0xFFFF); |
| |
| uint32_t ReentryDADDiu = |
| 0x67390000 | (((ReentryAddr + 0x80008000) >> 32) & 0xFFFF); |
| |
| uint32_t ReentryDSLL = 0x0019cc38; |
| |
| uint32_t ReentryDADDiu2 = |
| 0x67390000 | (((ReentryAddr + 0x8000) >> 16) & 0xFFFF); |
| |
| uint32_t ReentryDSLL2 = 0x0019cc38; |
| |
| uint32_t ReentryDADDiu3 = 0x67390000 | ((ReentryAddr)&0xFFFF); |
| |
| memcpy(ResolverMem + ReentryFnAddrOffset, &ReentryLUi, sizeof(ReentryLUi)); |
| memcpy(ResolverMem + (ReentryFnAddrOffset + 4), &ReentryDADDiu, |
| sizeof(ReentryDADDiu)); |
| memcpy(ResolverMem + (ReentryFnAddrOffset + 8), &ReentryDSLL, |
| sizeof(ReentryDSLL)); |
| memcpy(ResolverMem + (ReentryFnAddrOffset + 12), &ReentryDADDiu2, |
| sizeof(ReentryDADDiu2)); |
| memcpy(ResolverMem + (ReentryFnAddrOffset + 16), &ReentryDSLL2, |
| sizeof(ReentryDSLL2)); |
| memcpy(ResolverMem + (ReentryFnAddrOffset + 20), &ReentryDADDiu3, |
| sizeof(ReentryDADDiu3)); |
| } |
| |
| void OrcMips64::writeTrampolines(uint8_t *TrampolineMem, void *ResolverAddr, |
| unsigned NumTrampolines) { |
| |
| uint32_t *Trampolines = reinterpret_cast<uint32_t *>(TrampolineMem); |
| uint64_t ResolveAddr = reinterpret_cast<uint64_t>(ResolverAddr); |
| |
| uint64_t HeighestAddr = ((ResolveAddr + 0x800080008000) >> 48); |
| uint64_t HeigherAddr = ((ResolveAddr + 0x80008000) >> 32); |
| uint64_t HiAddr = ((ResolveAddr + 0x8000) >> 16); |
| |
| for (unsigned I = 0; I < NumTrampolines; ++I) { |
| Trampolines[10 * I + 0] = 0x03e0c025; // move $t8,$ra |
| Trampolines[10 * I + 1] = 0x3c190000 | (HeighestAddr & 0xFFFF); // lui $t9,resolveAddr |
| Trampolines[10 * I + 2] = 0x67390000 | (HeigherAddr & 0xFFFF); // daddiu $t9,$t9,%higher(resolveAddr) |
| Trampolines[10 * I + 3] = 0x0019cc38; // dsll $t9,$t9,16 |
| Trampolines[10 * I + 4] = 0x67390000 | (HiAddr & 0xFFFF); // daddiu $t9,$t9,%hi(ptr) |
| Trampolines[10 * I + 5] = 0x0019cc38; // dsll $t9,$t9,16 |
| Trampolines[10 * I + 6] = 0x67390000 | (ResolveAddr & 0xFFFF); // daddiu $t9,$t9,%lo(ptr) |
| Trampolines[10 * I + 7] = 0x0320f809; // jalr $t9 |
| Trampolines[10 * I + 8] = 0x00000000; // nop |
| Trampolines[10 * I + 9] = 0x00000000; // nop |
| } |
| } |
| |
| Error OrcMips64::emitIndirectStubsBlock(IndirectStubsInfo &StubsInfo, |
| unsigned MinStubs, |
| void *InitialPtrVal) { |
| // Stub format is: |
| // |
| // .section __orc_stubs |
| // stub1: |
| // lui $t9,ptr1 |
| // dsll $t9,$t9,16 |
| // daddiu $t9,$t9,%hi(ptr) |
| // dsll $t9,$t9,16 |
| // ld $t9,%lo(ptr) |
| // jr $t9 |
| // stub2: |
| // lui $t9,ptr1 |
| // dsll $t9,$t9,16 |
| // daddiu $t9,$t9,%hi(ptr) |
| // dsll $t9,$t9,16 |
| // ld $t9,%lo(ptr) |
| // jr $t9 |
| // |
| // ... |
| // |
| // .section __orc_ptrs |
| // ptr1: |
| // .dword 0x0 |
| // ptr2: |
| // .dword 0x0 |
| // |
| // ... |
| const unsigned StubSize = IndirectStubsInfo::StubSize; |
| |
| // Emit at least MinStubs, rounded up to fill the pages allocated. |
| static const unsigned PageSize = sys::Process::getPageSizeEstimate(); |
| unsigned NumPages = ((MinStubs * StubSize) + (PageSize - 1)) / PageSize; |
| unsigned NumStubs = (NumPages * PageSize) / StubSize; |
| |
| // Allocate memory for stubs and pointers in one call. |
| std::error_code EC; |
| auto StubsMem = sys::OwningMemoryBlock(sys::Memory::allocateMappedMemory( |
| 2 * NumPages * PageSize, nullptr, |
| sys::Memory::MF_READ | sys::Memory::MF_WRITE, EC)); |
| |
| if (EC) |
| return errorCodeToError(EC); |
| |
| // Create separate MemoryBlocks representing the stubs and pointers. |
| sys::MemoryBlock StubsBlock(StubsMem.base(), NumPages * PageSize); |
| sys::MemoryBlock PtrsBlock(static_cast<char *>(StubsMem.base()) + |
| NumPages * PageSize, |
| NumPages * PageSize); |
| |
| // Populate the stubs page stubs and mark it executable. |
| uint32_t *Stub = reinterpret_cast<uint32_t *>(StubsBlock.base()); |
| uint64_t PtrAddr = reinterpret_cast<uint64_t>(PtrsBlock.base()); |
| |
| for (unsigned I = 0; I < NumStubs; ++I, PtrAddr += 8) { |
| uint64_t HeighestAddr = ((PtrAddr + 0x800080008000) >> 48); |
| uint64_t HeigherAddr = ((PtrAddr + 0x80008000) >> 32); |
| uint64_t HiAddr = ((PtrAddr + 0x8000) >> 16); |
| Stub[8 * I + 0] = 0x3c190000 | (HeighestAddr & 0xFFFF); // lui $t9,ptr1 |
| Stub[8 * I + 1] = 0x67390000 | (HeigherAddr & 0xFFFF); // daddiu $t9,$t9,%higher(ptr) |
| Stub[8 * I + 2] = 0x0019cc38; // dsll $t9,$t9,16 |
| Stub[8 * I + 3] = 0x67390000 | (HiAddr & 0xFFFF); // daddiu $t9,$t9,%hi(ptr) |
| Stub[8 * I + 4] = 0x0019cc38; // dsll $t9,$t9,16 |
| Stub[8 * I + 5] = 0xdf390000 | (PtrAddr & 0xFFFF); // ld $t9,%lo(ptr) |
| Stub[8 * I + 6] = 0x03200008; // jr $t9 |
| Stub[8 * I + 7] = 0x00000000; // nop |
| } |
| |
| if (auto EC = sys::Memory::protectMappedMemory( |
| StubsBlock, sys::Memory::MF_READ | sys::Memory::MF_EXEC)) |
| return errorCodeToError(EC); |
| |
| // Initialize all pointers to point at FailureAddress. |
| void **Ptr = reinterpret_cast<void **>(PtrsBlock.base()); |
| for (unsigned I = 0; I < NumStubs; ++I) |
| Ptr[I] = InitialPtrVal; |
| |
| StubsInfo = IndirectStubsInfo(NumStubs, std::move(StubsMem)); |
| |
| return Error::success(); |
| } |
| } // End namespace orc. |
| } // End namespace llvm. |