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Diffstat (limited to 'src/arch/arm/insts/pred_inst.hh')
-rw-r--r--src/arch/arm/insts/pred_inst.hh67
1 files changed, 59 insertions, 8 deletions
diff --git a/src/arch/arm/insts/pred_inst.hh b/src/arch/arm/insts/pred_inst.hh
index 76b5a4cff..817ed44f5 100644
--- a/src/arch/arm/insts/pred_inst.hh
+++ b/src/arch/arm/insts/pred_inst.hh
@@ -1,4 +1,17 @@
-/* Copyright (c) 2007-2008 The Florida State University
+/*
+ * Copyright (c) 2010 ARM Limited
+ * All rights reserved
+ *
+ * The license below extends only to copyright in the software and shall
+ * not be construed as granting a license to any other intellectual
+ * property including but not limited to intellectual property relating
+ * to a hardware implementation of the functionality of the software
+ * licensed hereunder. You may use the software subject to the license
+ * terms below provided that you ensure that this notice is replicated
+ * unmodified and in its entirety in all distributions of the software,
+ * modified or unmodified, in source code or in binary form.
+ *
+ * Copyright (c) 2007-2008 The Florida State University
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -61,27 +74,65 @@ class PredOp : public ArmStaticInst
/**
* Base class for predicated immediate operations.
*/
-class PredImmOp : public PredOp
+class PredImmOpBase : public PredOp
{
protected:
uint32_t imm;
- uint32_t rotate;
uint32_t rotated_imm;
uint32_t rotated_carry;
/// Constructor
+ PredImmOpBase(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
+ PredOp(mnem, _machInst, __opClass),
+ imm(machInst.imm), rotated_imm(0), rotated_carry(0)
+ {
+ }
+
+ std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
+};
+
+/**
+ * Base class for regular predicated immediate operations.
+ */
+class PredImmOp : public PredImmOpBase
+{
+ protected:
+
+ uint32_t rotate;
+
+ /// Constructor
PredImmOp(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
- PredOp(mnem, _machInst, __opClass),
- imm(machInst.imm), rotate(machInst.rotate << 1),
- rotated_imm(0), rotated_carry(0)
+ PredImmOpBase(mnem, _machInst, __opClass),
+ rotate(machInst.rotate << 1)
{
rotated_imm = rotate_imm(imm, rotate);
if (rotate != 0)
- rotated_carry = (rotated_imm >> 31) & 1;
+ rotated_carry = bits(rotated_imm, 31);
}
+};
- std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
+/**
+ * Base class for modified predicated immediate operations.
+ */
+class PredModImmOp : public PredImmOpBase
+{
+ protected:
+
+ uint8_t ctrlImm;
+ uint8_t dataImm;
+
+
+ /// Constructor
+ PredModImmOp(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
+ PredImmOpBase(mnem, _machInst, __opClass),
+ ctrlImm(bits(machInst.instBits, 26) << 3 |
+ bits(machInst.instBits, 14, 12)),
+ dataImm(bits(machInst.instBits, 7, 0))
+ {
+ rotated_imm = modified_imm(ctrlImm, dataImm);
+ rotated_carry = bits(rotated_imm, 31);
+ }
};
/**