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-rw-r--r--src/arch/arm/isa.hh331
1 files changed, 274 insertions, 57 deletions
diff --git a/src/arch/arm/isa.hh b/src/arch/arm/isa.hh
index c747fc770..c72d5d50f 100644
--- a/src/arch/arm/isa.hh
+++ b/src/arch/arm/isa.hh
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010 ARM Limited
+ * Copyright (c) 2010, 2012-2013 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
@@ -44,9 +44,11 @@
#define __ARCH_ARM_ISA_HH__
#include "arch/arm/registers.hh"
+#include "arch/arm/system.hh"
#include "arch/arm/tlb.hh"
#include "arch/arm/types.hh"
#include "debug/Checkpoint.hh"
+#include "dev/arm/generic_timer.hh"
#include "sim/sim_object.hh"
struct ArmISAParams;
@@ -56,45 +58,174 @@ class EventManager;
namespace ArmISA
{
+
+ /**
+ * At the moment there are 57 registers which need to be aliased/
+ * translated with other registers in the ISA. This enum helps with that
+ * translation.
+ */
+ enum translateTable {
+ miscRegTranslateCSSELR_EL1,
+ miscRegTranslateSCTLR_EL1,
+ miscRegTranslateSCTLR_EL2,
+ miscRegTranslateACTLR_EL1,
+ miscRegTranslateACTLR_EL2,
+ miscRegTranslateCPACR_EL1,
+ miscRegTranslateCPTR_EL2,
+ miscRegTranslateHCR_EL2,
+ miscRegTranslateMDCR_EL2,
+ miscRegTranslateHSTR_EL2,
+ miscRegTranslateHACR_EL2,
+ miscRegTranslateTTBR0_EL1,
+ miscRegTranslateTTBR1_EL1,
+ miscRegTranslateTTBR0_EL2,
+ miscRegTranslateVTTBR_EL2,
+ miscRegTranslateTCR_EL1,
+ miscRegTranslateTCR_EL2,
+ miscRegTranslateVTCR_EL2,
+ miscRegTranslateAFSR0_EL1,
+ miscRegTranslateAFSR1_EL1,
+ miscRegTranslateAFSR0_EL2,
+ miscRegTranslateAFSR1_EL2,
+ miscRegTranslateESR_EL2,
+ miscRegTranslateFAR_EL1,
+ miscRegTranslateFAR_EL2,
+ miscRegTranslateHPFAR_EL2,
+ miscRegTranslatePAR_EL1,
+ miscRegTranslateMAIR_EL1,
+ miscRegTranslateMAIR_EL2,
+ miscRegTranslateAMAIR_EL1,
+ miscRegTranslateVBAR_EL1,
+ miscRegTranslateVBAR_EL2,
+ miscRegTranslateCONTEXTIDR_EL1,
+ miscRegTranslateTPIDR_EL0,
+ miscRegTranslateTPIDRRO_EL0,
+ miscRegTranslateTPIDR_EL1,
+ miscRegTranslateTPIDR_EL2,
+ miscRegTranslateTEECR32_EL1,
+ miscRegTranslateCNTFRQ_EL0,
+ miscRegTranslateCNTPCT_EL0,
+ miscRegTranslateCNTVCT_EL0,
+ miscRegTranslateCNTVOFF_EL2,
+ miscRegTranslateCNTKCTL_EL1,
+ miscRegTranslateCNTHCTL_EL2,
+ miscRegTranslateCNTP_TVAL_EL0,
+ miscRegTranslateCNTP_CTL_EL0,
+ miscRegTranslateCNTP_CVAL_EL0,
+ miscRegTranslateCNTV_TVAL_EL0,
+ miscRegTranslateCNTV_CTL_EL0,
+ miscRegTranslateCNTV_CVAL_EL0,
+ miscRegTranslateCNTHP_TVAL_EL2,
+ miscRegTranslateCNTHP_CTL_EL2,
+ miscRegTranslateCNTHP_CVAL_EL2,
+ miscRegTranslateDACR32_EL2,
+ miscRegTranslateIFSR32_EL2,
+ miscRegTranslateTEEHBR32_EL1,
+ miscRegTranslateSDER32_EL3,
+ miscRegTranslateMax
+ };
+
class ISA : public SimObject
{
protected:
+ // Parent system
+ ArmSystem *system;
+
+ // Cached copies of system-level properties
+ bool haveSecurity;
+ bool haveLPAE;
+ bool haveVirtualization;
+ bool haveLargeAsid64;
+ uint8_t physAddrRange64;
+
+ /** Register translation entry used in lookUpMiscReg */
+ struct MiscRegLUTEntry {
+ uint32_t lower;
+ uint32_t upper;
+ };
+
+ struct MiscRegInitializerEntry {
+ uint32_t index;
+ struct MiscRegLUTEntry entry;
+ };
+
+ /** Register table noting all translations */
+ static const struct MiscRegInitializerEntry
+ MiscRegSwitch[miscRegTranslateMax];
+
+ /** Translation table accessible via the value of the register */
+ std::vector<struct MiscRegLUTEntry> lookUpMiscReg;
+
MiscReg miscRegs[NumMiscRegs];
const IntRegIndex *intRegMap;
void
updateRegMap(CPSR cpsr)
{
- switch (cpsr.mode) {
- case MODE_USER:
- case MODE_SYSTEM:
- intRegMap = IntRegUsrMap;
- break;
- case MODE_FIQ:
- intRegMap = IntRegFiqMap;
- break;
- case MODE_IRQ:
- intRegMap = IntRegIrqMap;
- break;
- case MODE_SVC:
- intRegMap = IntRegSvcMap;
- break;
- case MODE_MON:
- intRegMap = IntRegMonMap;
- break;
- case MODE_ABORT:
- intRegMap = IntRegAbtMap;
- break;
- case MODE_UNDEFINED:
- intRegMap = IntRegUndMap;
- break;
- default:
- panic("Unrecognized mode setting in CPSR.\n");
+ if (cpsr.width == 0) {
+ intRegMap = IntReg64Map;
+ } else {
+ switch (cpsr.mode) {
+ case MODE_USER:
+ case MODE_SYSTEM:
+ intRegMap = IntRegUsrMap;
+ break;
+ case MODE_FIQ:
+ intRegMap = IntRegFiqMap;
+ break;
+ case MODE_IRQ:
+ intRegMap = IntRegIrqMap;
+ break;
+ case MODE_SVC:
+ intRegMap = IntRegSvcMap;
+ break;
+ case MODE_MON:
+ intRegMap = IntRegMonMap;
+ break;
+ case MODE_ABORT:
+ intRegMap = IntRegAbtMap;
+ break;
+ case MODE_HYP:
+ intRegMap = IntRegHypMap;
+ break;
+ case MODE_UNDEFINED:
+ intRegMap = IntRegUndMap;
+ break;
+ default:
+ panic("Unrecognized mode setting in CPSR.\n");
+ }
}
}
+ ::GenericTimer::SystemCounter * getSystemCounter(ThreadContext *tc);
+ ::GenericTimer::ArchTimer * getArchTimer(ThreadContext *tc,
+ int cpu_id);
+
+
+ private:
+ inline void assert32(ThreadContext *tc) {
+ CPSR cpsr M5_VAR_USED = readMiscReg(MISCREG_CPSR, tc);
+ assert(cpsr.width);
+ }
+
+ inline void assert64(ThreadContext *tc) {
+ CPSR cpsr M5_VAR_USED = readMiscReg(MISCREG_CPSR, tc);
+ assert(!cpsr.width);
+ }
+
+ void tlbiVA(ThreadContext *tc, MiscReg newVal, uint8_t asid,
+ bool secure_lookup, uint8_t target_el);
+
+ void tlbiALL(ThreadContext *tc, bool secure_lookup, uint8_t target_el);
+
+ void tlbiALLN(ThreadContext *tc, bool hyp, uint8_t target_el);
+
+ void tlbiMVA(ThreadContext *tc, MiscReg newVal, bool secure_lookup,
+ bool hyp, uint8_t target_el);
+
public:
void clear();
+ void clear64(const ArmISAParams *p);
MiscReg readMiscRegNoEffect(int misc_reg) const;
MiscReg readMiscReg(int misc_reg, ThreadContext *tc);
@@ -109,28 +240,28 @@ namespace ArmISA
return intRegMap[reg];
} else if (reg < NUM_INTREGS) {
return reg;
- } else {
- int mode = reg / intRegsPerMode;
- reg = reg % intRegsPerMode;
- switch (mode) {
- case MODE_USER:
- case MODE_SYSTEM:
- return INTREG_USR(reg);
- case MODE_FIQ:
- return INTREG_FIQ(reg);
- case MODE_IRQ:
- return INTREG_IRQ(reg);
- case MODE_SVC:
- return INTREG_SVC(reg);
- case MODE_MON:
- return INTREG_MON(reg);
- case MODE_ABORT:
- return INTREG_ABT(reg);
- case MODE_UNDEFINED:
- return INTREG_UND(reg);
+ } else if (reg == INTREG_SPX) {
+ CPSR cpsr = miscRegs[MISCREG_CPSR];
+ ExceptionLevel el = opModeToEL(
+ (OperatingMode) (uint8_t) cpsr.mode);
+ if (!cpsr.sp && el != EL0)
+ return INTREG_SP0;
+ switch (el) {
+ case EL3:
+ return INTREG_SP3;
+ // @todo: uncomment this to enable Virtualization
+ // case EL2:
+ // return INTREG_SP2;
+ case EL1:
+ return INTREG_SP1;
+ case EL0:
+ return INTREG_SP0;
default:
- panic("Flattening into an unknown mode.\n");
+ panic("Invalid exception level");
+ break;
}
+ } else {
+ return flattenIntRegModeIndex(reg);
}
}
@@ -150,47 +281,127 @@ namespace ArmISA
int
flattenMiscIndex(int reg) const
{
+ int flat_idx = reg;
+
if (reg == MISCREG_SPSR) {
- int spsr_idx = NUM_MISCREGS;
CPSR cpsr = miscRegs[MISCREG_CPSR];
switch (cpsr.mode) {
+ case MODE_EL0T:
+ warn("User mode does not have SPSR\n");
+ flat_idx = MISCREG_SPSR;
+ break;
+ case MODE_EL1T:
+ case MODE_EL1H:
+ flat_idx = MISCREG_SPSR_EL1;
+ break;
+ case MODE_EL2T:
+ case MODE_EL2H:
+ flat_idx = MISCREG_SPSR_EL2;
+ break;
+ case MODE_EL3T:
+ case MODE_EL3H:
+ flat_idx = MISCREG_SPSR_EL3;
+ break;
case MODE_USER:
warn("User mode does not have SPSR\n");
- spsr_idx = MISCREG_SPSR;
+ flat_idx = MISCREG_SPSR;
break;
case MODE_FIQ:
- spsr_idx = MISCREG_SPSR_FIQ;
+ flat_idx = MISCREG_SPSR_FIQ;
break;
case MODE_IRQ:
- spsr_idx = MISCREG_SPSR_IRQ;
+ flat_idx = MISCREG_SPSR_IRQ;
break;
case MODE_SVC:
- spsr_idx = MISCREG_SPSR_SVC;
+ flat_idx = MISCREG_SPSR_SVC;
break;
case MODE_MON:
- spsr_idx = MISCREG_SPSR_MON;
+ flat_idx = MISCREG_SPSR_MON;
break;
case MODE_ABORT:
- spsr_idx = MISCREG_SPSR_ABT;
+ flat_idx = MISCREG_SPSR_ABT;
+ break;
+ case MODE_HYP:
+ flat_idx = MISCREG_SPSR_HYP;
break;
case MODE_UNDEFINED:
- spsr_idx = MISCREG_SPSR_UND;
+ flat_idx = MISCREG_SPSR_UND;
break;
default:
warn("Trying to access SPSR in an invalid mode: %d\n",
cpsr.mode);
- spsr_idx = MISCREG_SPSR;
+ flat_idx = MISCREG_SPSR;
break;
}
- return spsr_idx;
+ } else if (miscRegInfo[reg][MISCREG_MUTEX]) {
+ // Mutually exclusive CP15 register
+ switch (reg) {
+ case MISCREG_PRRR_MAIR0:
+ case MISCREG_PRRR_MAIR0_NS:
+ case MISCREG_PRRR_MAIR0_S:
+ {
+ TTBCR ttbcr = readMiscRegNoEffect(MISCREG_TTBCR);
+ // If the muxed reg has been flattened, work out the
+ // offset and apply it to the unmuxed reg
+ int idxOffset = reg - MISCREG_PRRR_MAIR0;
+ if (ttbcr.eae)
+ flat_idx = flattenMiscIndex(MISCREG_MAIR0 +
+ idxOffset);
+ else
+ flat_idx = flattenMiscIndex(MISCREG_PRRR +
+ idxOffset);
+ }
+ break;
+ case MISCREG_NMRR_MAIR1:
+ case MISCREG_NMRR_MAIR1_NS:
+ case MISCREG_NMRR_MAIR1_S:
+ {
+ TTBCR ttbcr = readMiscRegNoEffect(MISCREG_TTBCR);
+ // If the muxed reg has been flattened, work out the
+ // offset and apply it to the unmuxed reg
+ int idxOffset = reg - MISCREG_NMRR_MAIR1;
+ if (ttbcr.eae)
+ flat_idx = flattenMiscIndex(MISCREG_MAIR1 +
+ idxOffset);
+ else
+ flat_idx = flattenMiscIndex(MISCREG_NMRR +
+ idxOffset);
+ }
+ break;
+ case MISCREG_PMXEVTYPER_PMCCFILTR:
+ {
+ PMSELR pmselr = miscRegs[MISCREG_PMSELR];
+ if (pmselr.sel == 31)
+ flat_idx = flattenMiscIndex(MISCREG_PMCCFILTR);
+ else
+ flat_idx = flattenMiscIndex(MISCREG_PMXEVTYPER);
+ }
+ break;
+ default:
+ panic("Unrecognized misc. register.\n");
+ break;
+ }
+ } else {
+ if (miscRegInfo[reg][MISCREG_BANKED]) {
+ bool secureReg = haveSecurity &&
+ inSecureState(miscRegs[MISCREG_SCR],
+ miscRegs[MISCREG_CPSR]);
+ flat_idx += secureReg ? 2 : 1;
+ }
}
- return reg;
+ return flat_idx;
}
void serialize(std::ostream &os)
{
DPRINTF(Checkpoint, "Serializing Arm Misc Registers\n");
SERIALIZE_ARRAY(miscRegs, NumMiscRegs);
+
+ SERIALIZE_SCALAR(haveSecurity);
+ SERIALIZE_SCALAR(haveLPAE);
+ SERIALIZE_SCALAR(haveVirtualization);
+ SERIALIZE_SCALAR(haveLargeAsid64);
+ SERIALIZE_SCALAR(physAddrRange64);
}
void unserialize(Checkpoint *cp, const std::string &section)
{
@@ -198,6 +409,12 @@ namespace ArmISA
UNSERIALIZE_ARRAY(miscRegs, NumMiscRegs);
CPSR tmp_cpsr = miscRegs[MISCREG_CPSR];
updateRegMap(tmp_cpsr);
+
+ UNSERIALIZE_SCALAR(haveSecurity);
+ UNSERIALIZE_SCALAR(haveLPAE);
+ UNSERIALIZE_SCALAR(haveVirtualization);
+ UNSERIALIZE_SCALAR(haveLargeAsid64);
+ UNSERIALIZE_SCALAR(physAddrRange64);
}
void startup(ThreadContext *tc) {}
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