arm: update AArch{64,32} register mappings

Change-Id: Idaaaeb3f7b1a0bdbf18d8e2d46686c78bb411317
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>

1 files changed, 131 insertions, 65 deletions

diff --git a/src/arch/arm/isa.cc b/src/arch/arm/isa.cc
index 2ae0bd7dc..74d15cdeb 100644
--- a/src/arch/arm/isa.cc
+++ b/src/arch/arm/isa.cc
@@ -56,71 +56,151 @@ namespace ArmISA
 
 
 /**
- * Some registers aliase with others, and therefore need to be translated.
+ * Some registers alias with others, and therefore need to be translated.
  * For each entry:
  * The first value is the misc register that is to be looked up
  * the second value is the lower part of the translation
  * the third the upper part
+ * aligned with reference documentation ARM DDI 0487A.i pp 1540-1543
  */
 const struct ISA::MiscRegInitializerEntry
-    ISA::MiscRegSwitch[miscRegTranslateMax] = {
-    {MISCREG_CSSELR_EL1, {MISCREG_CSSELR, 0}},
-    {MISCREG_SCTLR_EL1, {MISCREG_SCTLR, 0}},
-    {MISCREG_SCTLR_EL2, {MISCREG_HSCTLR, 0}},
-    {MISCREG_ACTLR_EL1, {MISCREG_ACTLR, 0}},
-    {MISCREG_ACTLR_EL2, {MISCREG_HACTLR, 0}},
+    ISA::MiscRegSwitch[] = {
+    {MISCREG_ACTLR_EL1, {MISCREG_ACTLR_NS, 0}},
+    {MISCREG_AFSR0_EL1, {MISCREG_ADFSR_NS, 0}},
+    {MISCREG_AFSR1_EL1, {MISCREG_AIFSR_NS, 0}},
+    {MISCREG_AMAIR_EL1, {MISCREG_AMAIR0_NS, MISCREG_AMAIR1_NS}},
+    {MISCREG_CONTEXTIDR_EL1, {MISCREG_CONTEXTIDR_NS, 0}},
     {MISCREG_CPACR_EL1, {MISCREG_CPACR, 0}},
-    {MISCREG_CPTR_EL2, {MISCREG_HCPTR, 0}},
-    {MISCREG_HCR_EL2, {MISCREG_HCR, 0}},
-    {MISCREG_MDCR_EL2, {MISCREG_HDCR, 0}},
-    {MISCREG_HSTR_EL2, {MISCREG_HSTR, 0}},
+    {MISCREG_CSSELR_EL1, {MISCREG_CSSELR_NS, 0}},
+    {MISCREG_DACR32_EL2, {MISCREG_DACR_NS, 0}},
+    {MISCREG_FAR_EL1, {MISCREG_DFAR_NS, MISCREG_IFAR_NS}},
+    // ESR_EL1 -> DFSR
     {MISCREG_HACR_EL2, {MISCREG_HACR, 0}},
-    {MISCREG_TTBR0_EL1, {MISCREG_TTBR0, 0}},
-    {MISCREG_TTBR1_EL1, {MISCREG_TTBR1, 0}},
-    {MISCREG_TTBR0_EL2, {MISCREG_HTTBR, 0}},
-    {MISCREG_VTTBR_EL2, {MISCREG_VTTBR, 0}},
-    {MISCREG_TCR_EL1, {MISCREG_TTBCR, 0}},
-    {MISCREG_TCR_EL2, {MISCREG_HTCR, 0}},
-    {MISCREG_VTCR_EL2, {MISCREG_VTCR, 0}},
-    {MISCREG_AFSR0_EL1, {MISCREG_ADFSR, 0}},
-    {MISCREG_AFSR1_EL1, {MISCREG_AIFSR, 0}},
+    {MISCREG_ACTLR_EL2, {MISCREG_HACTLR, 0}},
     {MISCREG_AFSR0_EL2, {MISCREG_HADFSR, 0}},
     {MISCREG_AFSR1_EL2, {MISCREG_HAIFSR, 0}},
-    {MISCREG_ESR_EL2, {MISCREG_HSR, 0}},
-    {MISCREG_FAR_EL1, {MISCREG_DFAR, MISCREG_IFAR}},
+    {MISCREG_AMAIR_EL2, {MISCREG_HAMAIR0, MISCREG_HAMAIR1}},
+    {MISCREG_CPTR_EL2, {MISCREG_HCPTR, 0}},
+    {MISCREG_HCR_EL2, {MISCREG_HCR, 0 /*MISCREG_HCR2*/}},
+    {MISCREG_MDCR_EL2, {MISCREG_HDCR, 0}},
     {MISCREG_FAR_EL2, {MISCREG_HDFAR, MISCREG_HIFAR}},
-    {MISCREG_HPFAR_EL2, {MISCREG_HPFAR, 0}},
-    {MISCREG_PAR_EL1, {MISCREG_PAR, 0}},
-    {MISCREG_MAIR_EL1, {MISCREG_PRRR, MISCREG_NMRR}},
     {MISCREG_MAIR_EL2, {MISCREG_HMAIR0, MISCREG_HMAIR1}},
-    {MISCREG_AMAIR_EL1, {MISCREG_AMAIR0, MISCREG_AMAIR1}},
-    {MISCREG_VBAR_EL1, {MISCREG_VBAR, 0}},
-    {MISCREG_VBAR_EL2, {MISCREG_HVBAR, 0}},
-    {MISCREG_CONTEXTIDR_EL1, {MISCREG_CONTEXTIDR, 0}},
-    {MISCREG_TPIDR_EL0, {MISCREG_TPIDRURW, 0}},
-    {MISCREG_TPIDRRO_EL0, {MISCREG_TPIDRURO, 0}},
-    {MISCREG_TPIDR_EL1, {MISCREG_TPIDRPRW, 0}},
+    {MISCREG_HPFAR_EL2, {MISCREG_HPFAR, 0}},
+    {MISCREG_SCTLR_EL2, {MISCREG_HSCTLR, 0}},
+    {MISCREG_ESR_EL2, {MISCREG_HSR, 0}},
+    {MISCREG_HSTR_EL2, {MISCREG_HSTR, 0}},
+    {MISCREG_TCR_EL2, {MISCREG_HTCR, 0}},
     {MISCREG_TPIDR_EL2, {MISCREG_HTPIDR, 0}},
-    {MISCREG_TEECR32_EL1, {MISCREG_TEECR, 0}},
+    {MISCREG_TTBR0_EL2, {MISCREG_HTTBR, 0}},
+    {MISCREG_VBAR_EL2, {MISCREG_HVBAR, 0}},
+    {MISCREG_IFSR32_EL2, {MISCREG_IFSR_NS, 0}},
+    {MISCREG_MAIR_EL1, {MISCREG_PRRR_NS, MISCREG_NMRR_NS}},
+    {MISCREG_PAR_EL1, {MISCREG_PAR_NS, 0}},
+    // RMR_EL1 -> RMR
+    // RMR_EL2 -> HRMR
+    {MISCREG_SCTLR_EL1, {MISCREG_SCTLR_NS, 0}},
+    {MISCREG_SDER32_EL3, {MISCREG_SDER, 0}},
+    {MISCREG_TPIDR_EL1, {MISCREG_TPIDRPRW_NS, 0}},
+    {MISCREG_TPIDRRO_EL0, {MISCREG_TPIDRURO_NS, 0}},
+    {MISCREG_TPIDR_EL0, {MISCREG_TPIDRURW_NS, 0}},
+    {MISCREG_TCR_EL1, {MISCREG_TTBCR_NS, 0}},
+    {MISCREG_TTBR0_EL1, {MISCREG_TTBR0_NS, 0}},
+    {MISCREG_TTBR1_EL1, {MISCREG_TTBR1_NS, 0}},
+    {MISCREG_VBAR_EL1, {MISCREG_VBAR_NS, 0}},
+    {MISCREG_VMPIDR_EL2, {MISCREG_VMPIDR, 0}},
+    {MISCREG_VPIDR_EL2, {MISCREG_VPIDR, 0}},
+    {MISCREG_VTCR_EL2, {MISCREG_VTCR, 0}},
+    {MISCREG_VTTBR_EL2, {MISCREG_VTTBR, 0}},
     {MISCREG_CNTFRQ_EL0, {MISCREG_CNTFRQ, 0}},
-    {MISCREG_CNTPCT_EL0, {MISCREG_CNTPCT, 0}},
-    {MISCREG_CNTVCT_EL0, {MISCREG_CNTVCT, 0}},
-    {MISCREG_CNTVOFF_EL2, {MISCREG_CNTVOFF, 0}},
-    {MISCREG_CNTKCTL_EL1, {MISCREG_CNTKCTL, 0}},
     {MISCREG_CNTHCTL_EL2, {MISCREG_CNTHCTL, 0}},
-    {MISCREG_CNTP_TVAL_EL0, {MISCREG_CNTP_TVAL, 0}},
-    {MISCREG_CNTP_CTL_EL0, {MISCREG_CNTP_CTL, 0}},
-    {MISCREG_CNTP_CVAL_EL0, {MISCREG_CNTP_CVAL, 0}},
-    {MISCREG_CNTV_TVAL_EL0, {MISCREG_CNTV_TVAL, 0}},
-    {MISCREG_CNTV_CTL_EL0, {MISCREG_CNTV_CTL, 0}},
-    {MISCREG_CNTV_CVAL_EL0, {MISCREG_CNTV_CVAL, 0}},
-    {MISCREG_CNTHP_TVAL_EL2, {MISCREG_CNTHP_TVAL, 0}},
     {MISCREG_CNTHP_CTL_EL2, {MISCREG_CNTHP_CTL, 0}},
-    {MISCREG_CNTHP_CVAL_EL2, {MISCREG_CNTHP_CVAL, 0}},
-    {MISCREG_DACR32_EL2, {MISCREG_DACR, 0}},
-    {MISCREG_IFSR32_EL2, {MISCREG_IFSR, 0}},
-    {MISCREG_TEEHBR32_EL1, {MISCREG_TEEHBR, 0}},
-    {MISCREG_SDER32_EL3, {MISCREG_SDER, 0}}
+    {MISCREG_CNTHP_CVAL_EL2, {MISCREG_CNTHP_CVAL, 0}}, /* 64b */
+    {MISCREG_CNTHP_TVAL_EL2, {MISCREG_CNTHP_TVAL, 0}},
+    {MISCREG_CNTKCTL_EL1, {MISCREG_CNTKCTL, 0}},
+    {MISCREG_CNTP_CTL_EL0, {MISCREG_CNTP_CTL_NS, 0}},
+    {MISCREG_CNTP_CVAL_EL0, {MISCREG_CNTP_CVAL_NS, 0}}, /* 64b */
+    {MISCREG_CNTP_TVAL_EL0, {MISCREG_CNTP_TVAL_NS, 0}},
+    {MISCREG_CNTPCT_EL0, {MISCREG_CNTPCT, 0}}, /* 64b */
+    {MISCREG_CNTV_CTL_EL0, {MISCREG_CNTV_CTL, 0}},
+    {MISCREG_CNTV_CVAL_EL0, {MISCREG_CNTV_CVAL, 0}}, /* 64b */
+    {MISCREG_CNTV_TVAL_EL0, {MISCREG_CNTV_TVAL, 0}},
+    {MISCREG_CNTVCT_EL0, {MISCREG_CNTVCT, 0}}, /* 64b */
+    {MISCREG_CNTVOFF_EL2, {MISCREG_CNTVOFF, 0}}, /* 64b */
+    {MISCREG_DBGAUTHSTATUS_EL1, {MISCREG_DBGAUTHSTATUS, 0}},
+    {MISCREG_DBGBCR0_EL1, {MISCREG_DBGBCR0, 0}},
+    {MISCREG_DBGBCR1_EL1, {MISCREG_DBGBCR1, 0}},
+    {MISCREG_DBGBCR2_EL1, {MISCREG_DBGBCR2, 0}},
+    {MISCREG_DBGBCR3_EL1, {MISCREG_DBGBCR3, 0}},
+    {MISCREG_DBGBCR4_EL1, {MISCREG_DBGBCR4, 0}},
+    {MISCREG_DBGBCR5_EL1, {MISCREG_DBGBCR5, 0}},
+    {MISCREG_DBGBVR0_EL1, {MISCREG_DBGBVR0, 0 /* MISCREG_DBGBXVR0 */}},
+    {MISCREG_DBGBVR1_EL1, {MISCREG_DBGBVR1, 0 /* MISCREG_DBGBXVR1 */}},
+    {MISCREG_DBGBVR2_EL1, {MISCREG_DBGBVR2, 0 /* MISCREG_DBGBXVR2 */}},
+    {MISCREG_DBGBVR3_EL1, {MISCREG_DBGBVR3, 0 /* MISCREG_DBGBXVR3 */}},
+    {MISCREG_DBGBVR4_EL1, {MISCREG_DBGBVR4, MISCREG_DBGBXVR4}},
+    {MISCREG_DBGBVR5_EL1, {MISCREG_DBGBVR5, MISCREG_DBGBXVR5}},
+    {MISCREG_DBGCLAIMSET_EL1, {MISCREG_DBGCLAIMSET, 0}},
+    {MISCREG_DBGCLAIMCLR_EL1, {MISCREG_DBGCLAIMCLR, 0}},
+    // DBGDTR_EL0 -> DBGDTR{R or T}Xint
+    // DBGDTRRX_EL0 -> DBGDTRRXint
+    // DBGDTRTX_EL0 -> DBGDTRRXint
+    {MISCREG_DBGPRCR_EL1, {MISCREG_DBGPRCR, 0}},
+    {MISCREG_DBGVCR32_EL2, {MISCREG_DBGVCR, 0}},
+    {MISCREG_DBGWCR0_EL1, {MISCREG_DBGWCR0, 0}},
+    {MISCREG_DBGWCR1_EL1, {MISCREG_DBGWCR1, 0}},
+    {MISCREG_DBGWCR2_EL1, {MISCREG_DBGWCR2, 0}},
+    {MISCREG_DBGWCR3_EL1, {MISCREG_DBGWCR3, 0}},
+    {MISCREG_DBGWVR0_EL1, {MISCREG_DBGWVR0, 0}},
+    {MISCREG_DBGWVR1_EL1, {MISCREG_DBGWVR1, 0}},
+    {MISCREG_DBGWVR2_EL1, {MISCREG_DBGWVR2, 0}},
+    {MISCREG_DBGWVR3_EL1, {MISCREG_DBGWVR3, 0}},
+    {MISCREG_ID_DFR0_EL1, {MISCREG_ID_DFR0, 0}},
+    {MISCREG_MDCCSR_EL0, {MISCREG_DBGDSCRint, 0}},
+    {MISCREG_MDRAR_EL1, {MISCREG_DBGDRAR, 0}},
+    {MISCREG_MDSCR_EL1, {MISCREG_DBGDSCRext, 0}},
+    {MISCREG_OSDLR_EL1, {MISCREG_DBGOSDLR, 0}},
+    {MISCREG_OSDTRRX_EL1, {MISCREG_DBGDTRRXext, 0}},
+    {MISCREG_OSDTRTX_EL1, {MISCREG_DBGDTRTXext, 0}},
+    {MISCREG_OSECCR_EL1, {MISCREG_DBGOSECCR, 0}},
+    {MISCREG_OSLAR_EL1, {MISCREG_DBGOSLAR, 0}},
+    {MISCREG_OSLSR_EL1, {MISCREG_DBGOSLSR, 0}},
+    {MISCREG_PMCCNTR_EL0, {MISCREG_PMCCNTR, 0}},
+    {MISCREG_PMCEID0_EL0, {MISCREG_PMCEID0, 0}},
+    {MISCREG_PMCEID1_EL0, {MISCREG_PMCEID1, 0}},
+    {MISCREG_PMCNTENSET_EL0, {MISCREG_PMCNTENSET, 0}},
+    {MISCREG_PMCNTENCLR_EL0, {MISCREG_PMCNTENCLR, 0}},
+    {MISCREG_PMCR_EL0, {MISCREG_PMCR, 0}},
+/*  {MISCREG_PMEVCNTR0_EL0, {MISCREG_PMEVCNTR0, 0}},
+    {MISCREG_PMEVCNTR1_EL0, {MISCREG_PMEVCNTR1, 0}},
+    {MISCREG_PMEVCNTR2_EL0, {MISCREG_PMEVCNTR2, 0}},
+    {MISCREG_PMEVCNTR3_EL0, {MISCREG_PMEVCNTR3, 0}},
+    {MISCREG_PMEVCNTR4_EL0, {MISCREG_PMEVCNTR4, 0}},
+    {MISCREG_PMEVCNTR5_EL0, {MISCREG_PMEVCNTR5, 0}},
+    {MISCREG_PMEVTYPER0_EL0, {MISCREG_PMEVTYPER0, 0}},
+    {MISCREG_PMEVTYPER1_EL0, {MISCREG_PMEVTYPER1, 0}},
+    {MISCREG_PMEVTYPER2_EL0, {MISCREG_PMEVTYPER2, 0}},
+    {MISCREG_PMEVTYPER3_EL0, {MISCREG_PMEVTYPER3, 0}},
+    {MISCREG_PMEVTYPER4_EL0, {MISCREG_PMEVTYPER4, 0}},
+    {MISCREG_PMEVTYPER5_EL0, {MISCREG_PMEVTYPER5, 0}}, */
+    {MISCREG_PMINTENCLR_EL1, {MISCREG_PMINTENCLR, 0}},
+    {MISCREG_PMINTENSET_EL1, {MISCREG_PMINTENSET, 0}},
+//  {MISCREG_PMOVSCLR_EL0, {MISCREG_PMOVSCLR, 0}},
+    {MISCREG_PMOVSSET_EL0, {MISCREG_PMOVSSET, 0}},
+    {MISCREG_PMSELR_EL0, {MISCREG_PMSELR, 0}},
+    {MISCREG_PMSWINC_EL0, {MISCREG_PMSWINC, 0}},
+    {MISCREG_PMUSERENR_EL0, {MISCREG_PMUSERENR, 0}},
+    {MISCREG_PMXEVCNTR_EL0, {MISCREG_PMXEVCNTR, 0}},
+    {MISCREG_PMXEVTYPER_EL0, {MISCREG_PMXEVTYPER, 0}},
+
+    // from ARM DDI 0487A.i, template text
+    // "AArch64 System register ___ can be mapped to
+    //  AArch32 System register ___, but this is not
+    //  architecturally mandated."
+    {MISCREG_SCR_EL3, {MISCREG_SCR, 0}}, // D7-2005
+    // MDCR_EL3 -> SDCR, D7-2108 (the latter is unimpl. in gem5)
+    {MISCREG_SPSR_EL1, {MISCREG_SPSR_SVC, 0}}, // C5.2.17 SPSR_EL1
+    {MISCREG_SPSR_EL2, {MISCREG_SPSR_HYP, 0}}, // C5.2.18 SPSR_EL2
+    {MISCREG_SPSR_EL3, {MISCREG_SPSR_MON, 0}}, // C5.2.19 SPSR_EL3
 };
 
 
@@ -160,13 +240,8 @@ ISA::ISA(Params *p)
     }
 
     /** Fill in the miscReg translation table */
-    for (uint32_t i = 0; i < miscRegTranslateMax; i++) {
-        struct MiscRegLUTEntry new_entry;
-
-        uint32_t select = MiscRegSwitch[i].index;
-        new_entry = MiscRegSwitch[i].entry;
-
-        lookUpMiscReg[select] = new_entry;
+    for (auto sw : MiscRegSwitch) {
+        lookUpMiscReg[sw.index] = sw.entry;
     }
 
     preUnflattenMiscReg();
@@ -719,15 +794,6 @@ ISA::readMiscReg(int misc_reg, ThreadContext *tc)
             return (readMiscRegNoEffect(MISCREG_HSCTLR) & ~mask) |
                 (readMiscRegNoEffect(MISCREG_SCTLR)  &  mask);
         }
-      case MISCREG_SCR:
-        {
-            CPSR cpsr = readMiscRegNoEffect(MISCREG_CPSR);
-            if (cpsr.width) {
-                return readMiscRegNoEffect(MISCREG_SCR);
-            } else {
-                return readMiscRegNoEffect(MISCREG_SCR_EL3);
-            }
-        }
 
       // Generic Timer registers
       case MISCREG_CNTFRQ ... MISCREG_CNTHP_CTL: