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Diffstat (limited to 'lib/Target/Sparc/SparcJITInfo.cpp')
| -rw-r--r-- | lib/Target/Sparc/SparcJITInfo.cpp | 326 |
1 files changed, 0 insertions, 326 deletions
diff --git a/lib/Target/Sparc/SparcJITInfo.cpp b/lib/Target/Sparc/SparcJITInfo.cpp deleted file mode 100644 index d0eec98b5e91..000000000000 --- a/lib/Target/Sparc/SparcJITInfo.cpp +++ /dev/null @@ -1,326 +0,0 @@ -//===-- SparcJITInfo.cpp - Implement the Sparc JIT Interface --------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file implements the JIT interfaces for the Sparc target. -// -//===----------------------------------------------------------------------===// -#include "SparcJITInfo.h" -#include "Sparc.h" -#include "SparcRelocations.h" -#include "llvm/ADT/SmallVector.h" -#include "llvm/CodeGen/JITCodeEmitter.h" -#include "llvm/Support/Memory.h" - -using namespace llvm; - -#define DEBUG_TYPE "jit" - -/// JITCompilerFunction - This contains the address of the JIT function used to -/// compile a function lazily. -static TargetJITInfo::JITCompilerFn JITCompilerFunction; - -extern "C" void SparcCompilationCallback(); - -extern "C" { -#if defined (__sparc__) - -#if defined(__arch64__) -#define FRAME_PTR(X) #X "+2047" -#else -#define FRAME_PTR(X) #X -#endif - - asm( - ".text\n" - "\t.align 4\n" - "\t.global SparcCompilationCallback\n" - "\t.type SparcCompilationCallback, #function\n" - "SparcCompilationCallback:\n" - // Save current register window and create stack. - // 128 (save area) + 6*8 (for arguments) + 16*8 (for float regfile) = 304 - "\tsave %sp, -304, %sp\n" - // save float regfile to the stack. - "\tstd %f0, [" FRAME_PTR(%fp) "-0]\n" - "\tstd %f2, [" FRAME_PTR(%fp) "-8]\n" - "\tstd %f4, [" FRAME_PTR(%fp) "-16]\n" - "\tstd %f6, [" FRAME_PTR(%fp) "-24]\n" - "\tstd %f8, [" FRAME_PTR(%fp) "-32]\n" - "\tstd %f10, [" FRAME_PTR(%fp) "-40]\n" - "\tstd %f12, [" FRAME_PTR(%fp) "-48]\n" - "\tstd %f14, [" FRAME_PTR(%fp) "-56]\n" - "\tstd %f16, [" FRAME_PTR(%fp) "-64]\n" - "\tstd %f18, [" FRAME_PTR(%fp) "-72]\n" - "\tstd %f20, [" FRAME_PTR(%fp) "-80]\n" - "\tstd %f22, [" FRAME_PTR(%fp) "-88]\n" - "\tstd %f24, [" FRAME_PTR(%fp) "-96]\n" - "\tstd %f26, [" FRAME_PTR(%fp) "-104]\n" - "\tstd %f28, [" FRAME_PTR(%fp) "-112]\n" - "\tstd %f30, [" FRAME_PTR(%fp) "-120]\n" - // stubaddr is in %g1. - "\tcall SparcCompilationCallbackC\n" - "\t mov %g1, %o0\n" - // restore float regfile from the stack. - "\tldd [" FRAME_PTR(%fp) "-0], %f0\n" - "\tldd [" FRAME_PTR(%fp) "-8], %f2\n" - "\tldd [" FRAME_PTR(%fp) "-16], %f4\n" - "\tldd [" FRAME_PTR(%fp) "-24], %f6\n" - "\tldd [" FRAME_PTR(%fp) "-32], %f8\n" - "\tldd [" FRAME_PTR(%fp) "-40], %f10\n" - "\tldd [" FRAME_PTR(%fp) "-48], %f12\n" - "\tldd [" FRAME_PTR(%fp) "-56], %f14\n" - "\tldd [" FRAME_PTR(%fp) "-64], %f16\n" - "\tldd [" FRAME_PTR(%fp) "-72], %f18\n" - "\tldd [" FRAME_PTR(%fp) "-80], %f20\n" - "\tldd [" FRAME_PTR(%fp) "-88], %f22\n" - "\tldd [" FRAME_PTR(%fp) "-96], %f24\n" - "\tldd [" FRAME_PTR(%fp) "-104], %f26\n" - "\tldd [" FRAME_PTR(%fp) "-112], %f28\n" - "\tldd [" FRAME_PTR(%fp) "-120], %f30\n" - // restore original register window and - // copy %o0 to %g1 - "\trestore %o0, 0, %g1\n" - // call the new stub - "\tjmp %g1\n" - "\t nop\n" - "\t.size SparcCompilationCallback, .-SparcCompilationCallback" - ); -#else - void SparcCompilationCallback() { - llvm_unreachable( - "Cannot call SparcCompilationCallback() on a non-sparc arch!"); - } -#endif -} - - -#define SETHI_INST(imm, rd) (0x01000000 | ((rd) << 25) | ((imm) & 0x3FFFFF)) -#define JMP_INST(rs1, imm, rd) (0x80000000 | ((rd) << 25) | (0x38 << 19) \ - | ((rs1) << 14) | (1 << 13) | ((imm) & 0x1FFF)) -#define NOP_INST SETHI_INST(0, 0) -#define OR_INST_I(rs1, imm, rd) (0x80000000 | ((rd) << 25) | (0x02 << 19) \ - | ((rs1) << 14) | (1 << 13) | ((imm) & 0x1FFF)) -#define OR_INST_R(rs1, rs2, rd) (0x80000000 | ((rd) << 25) | (0x02 << 19) \ - | ((rs1) << 14) | (0 << 13) | ((rs2) & 0x1F)) -#define RDPC_INST(rd) (0x80000000 | ((rd) << 25) | (0x28 << 19) \ - | (5 << 14)) -#define LDX_INST(rs1, imm, rd) (0xC0000000 | ((rd) << 25) | (0x0B << 19) \ - | ((rs1) << 14) | (1 << 13) | ((imm) & 0x1FFF)) -#define SLLX_INST(rs1, imm, rd) (0x80000000 | ((rd) << 25) | (0x25 << 19) \ - | ((rs1) << 14) | (3 << 12) | ((imm) & 0x3F)) -#define SUB_INST(rs1, imm, rd) (0x80000000 | ((rd) << 25) | (0x04 << 19) \ - | ((rs1) << 14) | (1 << 13) | ((imm) & 0x1FFF)) -#define XOR_INST(rs1, imm, rd) (0x80000000 | ((rd) << 25) | (0x03 << 19) \ - | ((rs1) << 14) | (1 << 13) | ((imm) & 0x1FFF)) -#define BA_INST(tgt) (0x10800000 | ((tgt) & 0x3FFFFF)) - -// Emit instructions to jump to Addr and store the starting address of -// the instructions emitted in the scratch register. -static void emitInstrForIndirectJump(intptr_t Addr, - unsigned scratch, - SmallVectorImpl<uint32_t> &Insts) { - - if (isInt<13>(Addr)) { - // Emit: jmpl %g0+Addr, <scratch> - // nop - Insts.push_back(JMP_INST(0, LO10(Addr), scratch)); - Insts.push_back(NOP_INST); - return; - } - - if (isUInt<32>(Addr)) { - // Emit: sethi %hi(Addr), scratch - // jmpl scratch+%lo(Addr), scratch - // sub scratch, 4, scratch - Insts.push_back(SETHI_INST(HI22(Addr), scratch)); - Insts.push_back(JMP_INST(scratch, LO10(Addr), scratch)); - Insts.push_back(SUB_INST(scratch, 4, scratch)); - return; - } - - if (Addr < 0 && isInt<33>(Addr)) { - // Emit: sethi %hix(Addr), scratch) - // xor scratch, %lox(Addr), scratch - // jmpl scratch+0, scratch - // sub scratch, 8, scratch - Insts.push_back(SETHI_INST(HIX22(Addr), scratch)); - Insts.push_back(XOR_INST(scratch, LOX10(Addr), scratch)); - Insts.push_back(JMP_INST(scratch, 0, scratch)); - Insts.push_back(SUB_INST(scratch, 8, scratch)); - return; - } - - // Emit: rd %pc, scratch - // ldx [scratch+16], scratch - // jmpl scratch+0, scratch - // sub scratch, 8, scratch - // <Addr: 8 byte> - Insts.push_back(RDPC_INST(scratch)); - Insts.push_back(LDX_INST(scratch, 16, scratch)); - Insts.push_back(JMP_INST(scratch, 0, scratch)); - Insts.push_back(SUB_INST(scratch, 8, scratch)); - Insts.push_back((uint32_t)(((int64_t)Addr) >> 32) & 0xffffffff); - Insts.push_back((uint32_t)(Addr & 0xffffffff)); - - // Instruction sequence without rdpc instruction - // 7 instruction and 2 scratch register - // Emit: sethi %hh(Addr), scratch - // or scratch, %hm(Addr), scratch - // sllx scratch, 32, scratch - // sethi %hi(Addr), scratch2 - // or scratch, scratch2, scratch - // jmpl scratch+%lo(Addr), scratch - // sub scratch, 20, scratch - // Insts.push_back(SETHI_INST(HH22(Addr), scratch)); - // Insts.push_back(OR_INST_I(scratch, HM10(Addr), scratch)); - // Insts.push_back(SLLX_INST(scratch, 32, scratch)); - // Insts.push_back(SETHI_INST(HI22(Addr), scratch2)); - // Insts.push_back(OR_INST_R(scratch, scratch2, scratch)); - // Insts.push_back(JMP_INST(scratch, LO10(Addr), scratch)); - // Insts.push_back(SUB_INST(scratch, 20, scratch)); -} - -extern "C" void *SparcCompilationCallbackC(intptr_t StubAddr) { - // Get the address of the compiled code for this function. - intptr_t NewVal = (intptr_t) JITCompilerFunction((void*) StubAddr); - - // Rewrite the function stub so that we don't end up here every time we - // execute the call. We're replacing the stub instructions with code - // that jumps to the compiled function: - - SmallVector<uint32_t, 8> Insts; - intptr_t diff = (NewVal - StubAddr) >> 2; - if (isInt<22>(diff)) { - // Use branch instruction to jump - Insts.push_back(BA_INST(diff)); - Insts.push_back(NOP_INST); - } else { - // Otherwise, use indirect jump to the compiled function - emitInstrForIndirectJump(NewVal, 1, Insts); - } - - for (unsigned i = 0, e = Insts.size(); i != e; ++i) - *(uint32_t *)(StubAddr + i*4) = Insts[i]; - - sys::Memory::InvalidateInstructionCache((void*) StubAddr, Insts.size() * 4); - return (void*)StubAddr; -} - - -void SparcJITInfo::replaceMachineCodeForFunction(void *Old, void *New) { - llvm_unreachable("FIXME: Implement SparcJITInfo::" - "replaceMachineCodeForFunction"); -} - - -TargetJITInfo::StubLayout SparcJITInfo::getStubLayout() { - // The stub contains maximum of 4 4-byte instructions and 8 bytes for address, - // aligned at 32 bytes. - // See emitFunctionStub and emitInstrForIndirectJump for details. - StubLayout Result = { 4*4 + 8, 32 }; - return Result; -} - -void *SparcJITInfo::emitFunctionStub(const Function *F, void *Fn, - JITCodeEmitter &JCE) -{ - JCE.emitAlignment(32); - void *Addr = (void*) (JCE.getCurrentPCValue()); - - intptr_t CurrentAddr = (intptr_t)Addr; - intptr_t EmittedAddr; - SmallVector<uint32_t, 8> Insts; - if (Fn != (void*)(intptr_t)SparcCompilationCallback) { - EmittedAddr = (intptr_t)Fn; - intptr_t diff = (EmittedAddr - CurrentAddr) >> 2; - if (isInt<22>(diff)) { - Insts.push_back(BA_INST(diff)); - Insts.push_back(NOP_INST); - } - } else { - EmittedAddr = (intptr_t)SparcCompilationCallback; - } - - if (Insts.size() == 0) - emitInstrForIndirectJump(EmittedAddr, 1, Insts); - - - if (!sys::Memory::setRangeWritable(Addr, 4 * Insts.size())) - llvm_unreachable("ERROR: Unable to mark stub writable."); - - for (unsigned i = 0, e = Insts.size(); i != e; ++i) - JCE.emitWordBE(Insts[i]); - - sys::Memory::InvalidateInstructionCache(Addr, 4 * Insts.size()); - if (!sys::Memory::setRangeExecutable(Addr, 4 * Insts.size())) - llvm_unreachable("ERROR: Unable to mark stub executable."); - - return Addr; -} - - -TargetJITInfo::LazyResolverFn -SparcJITInfo::getLazyResolverFunction(JITCompilerFn F) { - JITCompilerFunction = F; - return SparcCompilationCallback; -} - -/// relocate - Before the JIT can run a block of code that has been emitted, -/// it must rewrite the code to contain the actual addresses of any -/// referenced global symbols. -void SparcJITInfo::relocate(void *Function, MachineRelocation *MR, - unsigned NumRelocs, unsigned char *GOTBase) { - for (unsigned i = 0; i != NumRelocs; ++i, ++MR) { - void *RelocPos = (char*) Function + MR->getMachineCodeOffset(); - intptr_t ResultPtr = (intptr_t) MR->getResultPointer(); - - switch ((SP::RelocationType) MR->getRelocationType()) { - case SP::reloc_sparc_hi: - ResultPtr = (ResultPtr >> 10) & 0x3fffff; - break; - - case SP::reloc_sparc_lo: - ResultPtr = (ResultPtr & 0x3ff); - break; - - case SP::reloc_sparc_pc30: - ResultPtr = ((ResultPtr - (intptr_t)RelocPos) >> 2) & 0x3fffffff; - break; - - case SP::reloc_sparc_pc22: - ResultPtr = ((ResultPtr - (intptr_t)RelocPos) >> 2) & 0x3fffff; - break; - - case SP::reloc_sparc_pc19: - ResultPtr = ((ResultPtr - (intptr_t)RelocPos) >> 2) & 0x7ffff; - break; - - case SP::reloc_sparc_h44: - ResultPtr = (ResultPtr >> 22) & 0x3fffff; - break; - - case SP::reloc_sparc_m44: - ResultPtr = (ResultPtr >> 12) & 0x3ff; - break; - - case SP::reloc_sparc_l44: - ResultPtr = (ResultPtr & 0xfff); - break; - - case SP::reloc_sparc_hh: - ResultPtr = (((int64_t)ResultPtr) >> 42) & 0x3fffff; - break; - - case SP::reloc_sparc_hm: - ResultPtr = (((int64_t)ResultPtr) >> 32) & 0x3ff; - break; - - } - *((unsigned*) RelocPos) |= (unsigned) ResultPtr; - } -} |