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Diffstat (limited to 'include/llvm/MC/MCFixup.h')
-rw-r--r--include/llvm/MC/MCFixup.h119
1 files changed, 75 insertions, 44 deletions
diff --git a/include/llvm/MC/MCFixup.h b/include/llvm/MC/MCFixup.h
index accffb7f2247..29e321e2354c 100644
--- a/include/llvm/MC/MCFixup.h
+++ b/include/llvm/MC/MCFixup.h
@@ -20,35 +20,38 @@ class MCExpr;
/// Extensible enumeration to represent the type of a fixup.
enum MCFixupKind {
- FK_NONE = 0, ///< A no-op fixup.
- FK_Data_1, ///< A one-byte fixup.
- FK_Data_2, ///< A two-byte fixup.
- FK_Data_4, ///< A four-byte fixup.
- FK_Data_8, ///< A eight-byte fixup.
- FK_PCRel_1, ///< A one-byte pc relative fixup.
- FK_PCRel_2, ///< A two-byte pc relative fixup.
- FK_PCRel_4, ///< A four-byte pc relative fixup.
- FK_PCRel_8, ///< A eight-byte pc relative fixup.
- FK_GPRel_1, ///< A one-byte gp relative fixup.
- FK_GPRel_2, ///< A two-byte gp relative fixup.
- FK_GPRel_4, ///< A four-byte gp relative fixup.
- FK_GPRel_8, ///< A eight-byte gp relative fixup.
- FK_DTPRel_4, ///< A four-byte dtp relative fixup.
- FK_DTPRel_8, ///< A eight-byte dtp relative fixup.
- FK_TPRel_4, ///< A four-byte tp relative fixup.
- FK_TPRel_8, ///< A eight-byte tp relative fixup.
- FK_SecRel_1, ///< A one-byte section relative fixup.
- FK_SecRel_2, ///< A two-byte section relative fixup.
- FK_SecRel_4, ///< A four-byte section relative fixup.
- FK_SecRel_8, ///< A eight-byte section relative fixup.
- FK_Data_Add_1, ///< A one-byte add fixup.
- FK_Data_Add_2, ///< A two-byte add fixup.
- FK_Data_Add_4, ///< A four-byte add fixup.
- FK_Data_Add_8, ///< A eight-byte add fixup.
- FK_Data_Sub_1, ///< A one-byte sub fixup.
- FK_Data_Sub_2, ///< A two-byte sub fixup.
- FK_Data_Sub_4, ///< A four-byte sub fixup.
- FK_Data_Sub_8, ///< A eight-byte sub fixup.
+ FK_NONE = 0, ///< A no-op fixup.
+ FK_Data_1, ///< A one-byte fixup.
+ FK_Data_2, ///< A two-byte fixup.
+ FK_Data_4, ///< A four-byte fixup.
+ FK_Data_8, ///< A eight-byte fixup.
+ FK_Data_6b, ///< A six-bits fixup.
+ FK_PCRel_1, ///< A one-byte pc relative fixup.
+ FK_PCRel_2, ///< A two-byte pc relative fixup.
+ FK_PCRel_4, ///< A four-byte pc relative fixup.
+ FK_PCRel_8, ///< A eight-byte pc relative fixup.
+ FK_GPRel_1, ///< A one-byte gp relative fixup.
+ FK_GPRel_2, ///< A two-byte gp relative fixup.
+ FK_GPRel_4, ///< A four-byte gp relative fixup.
+ FK_GPRel_8, ///< A eight-byte gp relative fixup.
+ FK_DTPRel_4, ///< A four-byte dtp relative fixup.
+ FK_DTPRel_8, ///< A eight-byte dtp relative fixup.
+ FK_TPRel_4, ///< A four-byte tp relative fixup.
+ FK_TPRel_8, ///< A eight-byte tp relative fixup.
+ FK_SecRel_1, ///< A one-byte section relative fixup.
+ FK_SecRel_2, ///< A two-byte section relative fixup.
+ FK_SecRel_4, ///< A four-byte section relative fixup.
+ FK_SecRel_8, ///< A eight-byte section relative fixup.
+ FK_Data_Add_1, ///< A one-byte add fixup.
+ FK_Data_Add_2, ///< A two-byte add fixup.
+ FK_Data_Add_4, ///< A four-byte add fixup.
+ FK_Data_Add_8, ///< A eight-byte add fixup.
+ FK_Data_Add_6b, ///< A six-bits add fixup.
+ FK_Data_Sub_1, ///< A one-byte sub fixup.
+ FK_Data_Sub_2, ///< A two-byte sub fixup.
+ FK_Data_Sub_4, ///< A four-byte sub fixup.
+ FK_Data_Sub_8, ///< A eight-byte sub fixup.
+ FK_Data_Sub_6b, ///< A six-bits sub fixup.
FirstTargetFixupKind = 128,
@@ -75,25 +78,25 @@ class MCFixup {
/// The value to put into the fixup location. The exact interpretation of the
/// expression is target dependent, usually it will be one of the operands to
/// an instruction or an assembler directive.
- const MCExpr *Value;
+ const MCExpr *Value = nullptr;
/// The byte index of start of the relocation inside the MCFragment.
- uint32_t Offset;
+ uint32_t Offset = 0;
/// The target dependent kind of fixup item this is. The kind is used to
/// determine how the operand value should be encoded into the instruction.
- unsigned Kind;
+ MCFixupKind Kind = FK_NONE;
/// The source location which gave rise to the fixup, if any.
SMLoc Loc;
public:
static MCFixup create(uint32_t Offset, const MCExpr *Value,
MCFixupKind Kind, SMLoc Loc = SMLoc()) {
- assert(unsigned(Kind) < MaxTargetFixupKind && "Kind out of range!");
+ assert(Kind < MaxTargetFixupKind && "Kind out of range!");
MCFixup FI;
FI.Value = Value;
FI.Offset = Offset;
- FI.Kind = unsigned(Kind);
+ FI.Kind = Kind;
FI.Loc = Loc;
return FI;
}
@@ -104,7 +107,7 @@ public:
MCFixup FI;
FI.Value = Fixup.getValue();
FI.Offset = Fixup.getOffset();
- FI.Kind = (unsigned)getAddKindForKind(Fixup.getKind());
+ FI.Kind = getAddKindForKind(Fixup.getKind());
FI.Loc = Fixup.getLoc();
return FI;
}
@@ -115,12 +118,14 @@ public:
MCFixup FI;
FI.Value = Fixup.getValue();
FI.Offset = Fixup.getOffset();
- FI.Kind = (unsigned)getSubKindForKind(Fixup.getKind());
+ FI.Kind = getSubKindForKind(Fixup.getKind());
FI.Loc = Fixup.getLoc();
return FI;
}
- MCFixupKind getKind() const { return MCFixupKind(Kind); }
+ MCFixupKind getKind() const { return Kind; }
+
+ unsigned getTargetKind() const { return Kind; }
uint32_t getOffset() const { return Offset; }
void setOffset(uint32_t Value) { Offset = Value; }
@@ -129,37 +134,63 @@ public:
/// Return the generic fixup kind for a value with the given size. It
/// is an error to pass an unsupported size.
- static MCFixupKind getKindForSize(unsigned Size, bool isPCRel) {
+ static MCFixupKind getKindForSize(unsigned Size, bool IsPCRel) {
switch (Size) {
default: llvm_unreachable("Invalid generic fixup size!");
- case 1: return isPCRel ? FK_PCRel_1 : FK_Data_1;
- case 2: return isPCRel ? FK_PCRel_2 : FK_Data_2;
- case 4: return isPCRel ? FK_PCRel_4 : FK_Data_4;
- case 8: return isPCRel ? FK_PCRel_8 : FK_Data_8;
+ case 1:
+ return IsPCRel ? FK_PCRel_1 : FK_Data_1;
+ case 2:
+ return IsPCRel ? FK_PCRel_2 : FK_Data_2;
+ case 4:
+ return IsPCRel ? FK_PCRel_4 : FK_Data_4;
+ case 8:
+ return IsPCRel ? FK_PCRel_8 : FK_Data_8;
+ }
+ }
+
+ /// Return the generic fixup kind for a value with the given size in bits.
+ /// It is an error to pass an unsupported size.
+ static MCFixupKind getKindForSizeInBits(unsigned Size, bool IsPCRel) {
+ switch (Size) {
+ default:
+ llvm_unreachable("Invalid generic fixup size!");
+ case 6:
+ assert(!IsPCRel && "Invalid pc-relative fixup size!");
+ return FK_Data_6b;
+ case 8:
+ return IsPCRel ? FK_PCRel_1 : FK_Data_1;
+ case 16:
+ return IsPCRel ? FK_PCRel_2 : FK_Data_2;
+ case 32:
+ return IsPCRel ? FK_PCRel_4 : FK_Data_4;
+ case 64:
+ return IsPCRel ? FK_PCRel_8 : FK_Data_8;
}
}
/// Return the generic fixup kind for an addition with a given size. It
/// is an error to pass an unsupported size.
- static MCFixupKind getAddKindForKind(unsigned Kind) {
+ static MCFixupKind getAddKindForKind(MCFixupKind Kind) {
switch (Kind) {
default: llvm_unreachable("Unknown type to convert!");
case FK_Data_1: return FK_Data_Add_1;
case FK_Data_2: return FK_Data_Add_2;
case FK_Data_4: return FK_Data_Add_4;
case FK_Data_8: return FK_Data_Add_8;
+ case FK_Data_6b: return FK_Data_Add_6b;
}
}
/// Return the generic fixup kind for an subtraction with a given size. It
/// is an error to pass an unsupported size.
- static MCFixupKind getSubKindForKind(unsigned Kind) {
+ static MCFixupKind getSubKindForKind(MCFixupKind Kind) {
switch (Kind) {
default: llvm_unreachable("Unknown type to convert!");
case FK_Data_1: return FK_Data_Sub_1;
case FK_Data_2: return FK_Data_Sub_2;
case FK_Data_4: return FK_Data_Sub_4;
case FK_Data_8: return FK_Data_Sub_8;
+ case FK_Data_6b: return FK_Data_Sub_6b;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 06:18:55 +0000