diff options
Diffstat (limited to 'contrib/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp b/contrib/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp new file mode 100644 index 000000000000..dfea7e33fa15 --- /dev/null +++ b/contrib/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp @@ -0,0 +1,246 @@ +//===-- SystemZMCTargetDesc.cpp - SystemZ target descriptions -------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "SystemZMCTargetDesc.h" +#include "InstPrinter/SystemZInstPrinter.h" +#include "SystemZMCAsmInfo.h" +#include "llvm/MC/MCInstrInfo.h" +#include "llvm/MC/MCRegisterInfo.h" +#include "llvm/MC/MCStreamer.h" +#include "llvm/MC/MCSubtargetInfo.h" +#include "llvm/Support/TargetRegistry.h" + +using namespace llvm; + +#define GET_INSTRINFO_MC_DESC +#include "SystemZGenInstrInfo.inc" + +#define GET_SUBTARGETINFO_MC_DESC +#include "SystemZGenSubtargetInfo.inc" + +#define GET_REGINFO_MC_DESC +#include "SystemZGenRegisterInfo.inc" + +const unsigned SystemZMC::GR32Regs[16] = { + SystemZ::R0L, SystemZ::R1L, SystemZ::R2L, SystemZ::R3L, + SystemZ::R4L, SystemZ::R5L, SystemZ::R6L, SystemZ::R7L, + SystemZ::R8L, SystemZ::R9L, SystemZ::R10L, SystemZ::R11L, + SystemZ::R12L, SystemZ::R13L, SystemZ::R14L, SystemZ::R15L +}; + +const unsigned SystemZMC::GRH32Regs[16] = { + SystemZ::R0H, SystemZ::R1H, SystemZ::R2H, SystemZ::R3H, + SystemZ::R4H, SystemZ::R5H, SystemZ::R6H, SystemZ::R7H, + SystemZ::R8H, SystemZ::R9H, SystemZ::R10H, SystemZ::R11H, + SystemZ::R12H, SystemZ::R13H, SystemZ::R14H, SystemZ::R15H +}; + +const unsigned SystemZMC::GR64Regs[16] = { + SystemZ::R0D, SystemZ::R1D, SystemZ::R2D, SystemZ::R3D, + SystemZ::R4D, SystemZ::R5D, SystemZ::R6D, SystemZ::R7D, + SystemZ::R8D, SystemZ::R9D, SystemZ::R10D, SystemZ::R11D, + SystemZ::R12D, SystemZ::R13D, SystemZ::R14D, SystemZ::R15D +}; + +const unsigned SystemZMC::GR128Regs[16] = { + SystemZ::R0Q, 0, SystemZ::R2Q, 0, + SystemZ::R4Q, 0, SystemZ::R6Q, 0, + SystemZ::R8Q, 0, SystemZ::R10Q, 0, + SystemZ::R12Q, 0, SystemZ::R14Q, 0 +}; + +const unsigned SystemZMC::FP32Regs[16] = { + SystemZ::F0S, SystemZ::F1S, SystemZ::F2S, SystemZ::F3S, + SystemZ::F4S, SystemZ::F5S, SystemZ::F6S, SystemZ::F7S, + SystemZ::F8S, SystemZ::F9S, SystemZ::F10S, SystemZ::F11S, + SystemZ::F12S, SystemZ::F13S, SystemZ::F14S, SystemZ::F15S +}; + +const unsigned SystemZMC::FP64Regs[16] = { + SystemZ::F0D, SystemZ::F1D, SystemZ::F2D, SystemZ::F3D, + SystemZ::F4D, SystemZ::F5D, SystemZ::F6D, SystemZ::F7D, + SystemZ::F8D, SystemZ::F9D, SystemZ::F10D, SystemZ::F11D, + SystemZ::F12D, SystemZ::F13D, SystemZ::F14D, SystemZ::F15D +}; + +const unsigned SystemZMC::FP128Regs[16] = { + SystemZ::F0Q, SystemZ::F1Q, 0, 0, + SystemZ::F4Q, SystemZ::F5Q, 0, 0, + SystemZ::F8Q, SystemZ::F9Q, 0, 0, + SystemZ::F12Q, SystemZ::F13Q, 0, 0 +}; + +const unsigned SystemZMC::VR32Regs[32] = { + SystemZ::F0S, SystemZ::F1S, SystemZ::F2S, SystemZ::F3S, + SystemZ::F4S, SystemZ::F5S, SystemZ::F6S, SystemZ::F7S, + SystemZ::F8S, SystemZ::F9S, SystemZ::F10S, SystemZ::F11S, + SystemZ::F12S, SystemZ::F13S, SystemZ::F14S, SystemZ::F15S, + SystemZ::F16S, SystemZ::F17S, SystemZ::F18S, SystemZ::F19S, + SystemZ::F20S, SystemZ::F21S, SystemZ::F22S, SystemZ::F23S, + SystemZ::F24S, SystemZ::F25S, SystemZ::F26S, SystemZ::F27S, + SystemZ::F28S, SystemZ::F29S, SystemZ::F30S, SystemZ::F31S +}; + +const unsigned SystemZMC::VR64Regs[32] = { + SystemZ::F0D, SystemZ::F1D, SystemZ::F2D, SystemZ::F3D, + SystemZ::F4D, SystemZ::F5D, SystemZ::F6D, SystemZ::F7D, + SystemZ::F8D, SystemZ::F9D, SystemZ::F10D, SystemZ::F11D, + SystemZ::F12D, SystemZ::F13D, SystemZ::F14D, SystemZ::F15D, + SystemZ::F16D, SystemZ::F17D, SystemZ::F18D, SystemZ::F19D, + SystemZ::F20D, SystemZ::F21D, SystemZ::F22D, SystemZ::F23D, + SystemZ::F24D, SystemZ::F25D, SystemZ::F26D, SystemZ::F27D, + SystemZ::F28D, SystemZ::F29D, SystemZ::F30D, SystemZ::F31D +}; + +const unsigned SystemZMC::VR128Regs[32] = { + SystemZ::V0, SystemZ::V1, SystemZ::V2, SystemZ::V3, + SystemZ::V4, SystemZ::V5, SystemZ::V6, SystemZ::V7, + SystemZ::V8, SystemZ::V9, SystemZ::V10, SystemZ::V11, + SystemZ::V12, SystemZ::V13, SystemZ::V14, SystemZ::V15, + SystemZ::V16, SystemZ::V17, SystemZ::V18, SystemZ::V19, + SystemZ::V20, SystemZ::V21, SystemZ::V22, SystemZ::V23, + SystemZ::V24, SystemZ::V25, SystemZ::V26, SystemZ::V27, + SystemZ::V28, SystemZ::V29, SystemZ::V30, SystemZ::V31 +}; + +const unsigned SystemZMC::AR32Regs[16] = { + SystemZ::A0, SystemZ::A1, SystemZ::A2, SystemZ::A3, + SystemZ::A4, SystemZ::A5, SystemZ::A6, SystemZ::A7, + SystemZ::A8, SystemZ::A9, SystemZ::A10, SystemZ::A11, + SystemZ::A12, SystemZ::A13, SystemZ::A14, SystemZ::A15 +}; + +unsigned SystemZMC::getFirstReg(unsigned Reg) { + static unsigned Map[SystemZ::NUM_TARGET_REGS]; + static bool Initialized = false; + if (!Initialized) { + for (unsigned I = 0; I < 16; ++I) { + Map[GR32Regs[I]] = I; + Map[GRH32Regs[I]] = I; + Map[GR64Regs[I]] = I; + Map[GR128Regs[I]] = I; + Map[FP128Regs[I]] = I; + Map[AR32Regs[I]] = I; + } + for (unsigned I = 0; I < 32; ++I) { + Map[VR32Regs[I]] = I; + Map[VR64Regs[I]] = I; + Map[VR128Regs[I]] = I; + } + } + assert(Reg < SystemZ::NUM_TARGET_REGS); + return Map[Reg]; +} + +static MCAsmInfo *createSystemZMCAsmInfo(const MCRegisterInfo &MRI, + const Triple &TT) { + MCAsmInfo *MAI = new SystemZMCAsmInfo(TT); + MCCFIInstruction Inst = + MCCFIInstruction::createDefCfa(nullptr, + MRI.getDwarfRegNum(SystemZ::R15D, true), + SystemZMC::CFAOffsetFromInitialSP); + MAI->addInitialFrameState(Inst); + return MAI; +} + +static MCInstrInfo *createSystemZMCInstrInfo() { + MCInstrInfo *X = new MCInstrInfo(); + InitSystemZMCInstrInfo(X); + return X; +} + +static MCRegisterInfo *createSystemZMCRegisterInfo(const Triple &TT) { + MCRegisterInfo *X = new MCRegisterInfo(); + InitSystemZMCRegisterInfo(X, SystemZ::R14D); + return X; +} + +static MCSubtargetInfo * +createSystemZMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) { + return createSystemZMCSubtargetInfoImpl(TT, CPU, FS); +} + +static void adjustCodeGenOpts(const Triple &TT, Reloc::Model RM, + CodeModel::Model &CM) { + // For SystemZ we define the models as follows: + // + // Small: BRASL can call any function and will use a stub if necessary. + // Locally-binding symbols will always be in range of LARL. + // + // Medium: BRASL can call any function and will use a stub if necessary. + // GOT slots and locally-defined text will always be in range + // of LARL, but other symbols might not be. + // + // Large: Equivalent to Medium for now. + // + // Kernel: Equivalent to Medium for now. + // + // This means that any PIC module smaller than 4GB meets the + // requirements of Small, so Small seems like the best default there. + // + // All symbols bind locally in a non-PIC module, so the choice is less + // obvious. There are two cases: + // + // - When creating an executable, PLTs and copy relocations allow + // us to treat external symbols as part of the executable. + // Any executable smaller than 4GB meets the requirements of Small, + // so that seems like the best default. + // + // - When creating JIT code, stubs will be in range of BRASL if the + // image is less than 4GB in size. GOT entries will likewise be + // in range of LARL. However, the JIT environment has no equivalent + // of copy relocs, so locally-binding data symbols might not be in + // the range of LARL. We need the Medium model in that case. + if (CM == CodeModel::Default) + CM = CodeModel::Small; + else if (CM == CodeModel::JITDefault) + CM = RM == Reloc::PIC_ ? CodeModel::Small : CodeModel::Medium; +} + +static MCInstPrinter *createSystemZMCInstPrinter(const Triple &T, + unsigned SyntaxVariant, + const MCAsmInfo &MAI, + const MCInstrInfo &MII, + const MCRegisterInfo &MRI) { + return new SystemZInstPrinter(MAI, MII, MRI); +} + +extern "C" void LLVMInitializeSystemZTargetMC() { + // Register the MCAsmInfo. + TargetRegistry::RegisterMCAsmInfo(getTheSystemZTarget(), + createSystemZMCAsmInfo); + + // Register the adjustCodeGenOpts. + TargetRegistry::registerMCAdjustCodeGenOpts(getTheSystemZTarget(), + adjustCodeGenOpts); + + // Register the MCCodeEmitter. + TargetRegistry::RegisterMCCodeEmitter(getTheSystemZTarget(), + createSystemZMCCodeEmitter); + + // Register the MCInstrInfo. + TargetRegistry::RegisterMCInstrInfo(getTheSystemZTarget(), + createSystemZMCInstrInfo); + + // Register the MCRegisterInfo. + TargetRegistry::RegisterMCRegInfo(getTheSystemZTarget(), + createSystemZMCRegisterInfo); + + // Register the MCSubtargetInfo. + TargetRegistry::RegisterMCSubtargetInfo(getTheSystemZTarget(), + createSystemZMCSubtargetInfo); + + // Register the MCAsmBackend. + TargetRegistry::RegisterMCAsmBackend(getTheSystemZTarget(), + createSystemZMCAsmBackend); + + // Register the MCInstPrinter. + TargetRegistry::RegisterMCInstPrinter(getTheSystemZTarget(), + createSystemZMCInstPrinter); +} |