forked from OSchip/llvm-project
65 lines
2.2 KiB
C
65 lines
2.2 KiB
C
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//===-- ARMBaseInfo.h - Top level definitions for ARM ---*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains small standalone helper functions and enum definitions for
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// the ARM target useful for the compiler back-end and the MC libraries.
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// As such, it deliberately does not include references to LLVM core
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// code gen types, passes, etc..
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_ARM_UTILS_ARMBASEINFO_H
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#define LLVM_LIB_TARGET_ARM_UTILS_ARMBASEINFO_H
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#include "llvm/ADT/StringSwitch.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/MC/SubtargetFeature.h"
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#include "MCTargetDesc/ARMMCTargetDesc.h"
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namespace llvm {
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namespace ARMSysReg {
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struct MClassSysReg {
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const char *Name;
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uint16_t M1Encoding12;
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uint16_t M2M3Encoding8;
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uint16_t Encoding;
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FeatureBitset FeaturesRequired;
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// return true if FeaturesRequired are all present in ActiveFeatures
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bool hasRequiredFeatures(FeatureBitset ActiveFeatures) const {
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return (FeaturesRequired & ActiveFeatures) == FeaturesRequired;
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}
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// returns true if TestFeatures are all present in FeaturesRequired
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bool isInRequiredFeatures(FeatureBitset TestFeatures) const {
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return (FeaturesRequired & TestFeatures) == TestFeatures;
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}
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};
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#define GET_MCLASSSYSREG_DECL
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#include "ARMGenSystemRegister.inc"
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// lookup system register using 12-bit SYSm value.
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// Note: the search is uniqued using M1 mask
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const MClassSysReg *lookupMClassSysRegBy12bitSYSmValue(unsigned SYSm);
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// returns APSR with _<bits> qualifier.
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// Note: ARMv7-M deprecates using MSR APSR without a _<bits> qualifier
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const MClassSysReg *lookupMClassSysRegAPSRNonDeprecated(unsigned SYSm);
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// lookup system registers using 8-bit SYSm value
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const MClassSysReg *lookupMClassSysRegBy8bitSYSmValue(unsigned SYSm);
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} // end namespace ARMSysReg
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} // end namespace llvm
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#endif // LLVM_LIB_TARGET_ARM_UTILS_ARMBASEINFO_H
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