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43 #ifndef __ARCH_ARM_ISA_HH__
44 #define __ARCH_ARM_ISA_HH__
46 #include "arch/arm/registers.hh"
47 #include "arch/arm/tlb.hh"
48 #include "arch/arm/types.hh"
49 #include "debug/Checkpoint.hh"
50 #include "sim/sim_object.hh"
59 class ISA : public SimObject
62 MiscReg miscRegs[NumMiscRegs];
63 const IntRegIndex *intRegMap;
66 updateRegMap(CPSR cpsr)
71 intRegMap = IntRegUsrMap;
74 intRegMap = IntRegFiqMap;
77 intRegMap = IntRegIrqMap;
80 intRegMap = IntRegSvcMap;
83 intRegMap = IntRegMonMap;
86 intRegMap = IntRegAbtMap;
89 intRegMap = IntRegUndMap;
92 panic("Unrecognized mode setting in CPSR.\n");
99 MiscReg readMiscRegNoEffect(int misc_reg);
100 MiscReg readMiscReg(int misc_reg, ThreadContext *tc);
101 void setMiscRegNoEffect(int misc_reg, const MiscReg &val);
102 void setMiscReg(int misc_reg, const MiscReg &val, ThreadContext *tc);
105 flattenIntIndex(int reg)
108 if (reg < NUM_ARCH_INTREGS) {
109 return intRegMap[reg];
110 } else if (reg < NUM_INTREGS) {
113 int mode = reg / intRegsPerMode;
114 reg = reg % intRegsPerMode;
118 return INTREG_USR(reg);
120 return INTREG_FIQ(reg);
122 return INTREG_IRQ(reg);
124 return INTREG_SVC(reg);
126 return INTREG_MON(reg);
128 return INTREG_ABT(reg);
130 return INTREG_UND(reg);
132 panic("Flattening into an unknown mode.\n");
138 flattenFloatIndex(int reg)
144 flattenMiscIndex(int reg)
146 if (reg == MISCREG_SPSR) {
147 int spsr_idx = NUM_MISCREGS;
148 CPSR cpsr = miscRegs[MISCREG_CPSR];
151 warn("User mode does not have SPSR\n");
152 spsr_idx = MISCREG_SPSR;
155 spsr_idx = MISCREG_SPSR_FIQ;
158 spsr_idx = MISCREG_SPSR_IRQ;
161 spsr_idx = MISCREG_SPSR_SVC;
164 spsr_idx = MISCREG_SPSR_MON;
167 spsr_idx = MISCREG_SPSR_ABT;
170 spsr_idx = MISCREG_SPSR_UND;
173 warn("Trying to access SPSR in an invalid mode: %d\n",
175 spsr_idx = MISCREG_SPSR;
183 void serialize(std::ostream &os)
185 DPRINTF(Checkpoint, "Serializing Arm Misc Registers\n");
186 SERIALIZE_ARRAY(miscRegs, NumMiscRegs);
188 void unserialize(Checkpoint *cp, const std::string §ion)
190 DPRINTF(Checkpoint, "Unserializing Arm Misc Registers\n");
191 UNSERIALIZE_ARRAY(miscRegs, NumMiscRegs);
192 CPSR tmp_cpsr = miscRegs[MISCREG_CPSR];
193 updateRegMap(tmp_cpsr);
196 typedef ArmISAParams Params;
198 const Params *params() const;