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-rw-r--r--src/arch/arm/isa.hh233
1 files changed, 4 insertions, 229 deletions
diff --git a/src/arch/arm/isa.hh b/src/arch/arm/isa.hh
index 51503dbf6..ec6479f50 100644
--- a/src/arch/arm/isa.hh
+++ b/src/arch/arm/isa.hh
@@ -167,238 +167,13 @@ namespace ArmISA
//XXX We need to initialize the rest of the state.
}
- MiscReg
- readMiscRegNoEffect(int misc_reg)
- {
- assert(misc_reg < NumMiscRegs);
- if (misc_reg == MISCREG_SPSR) {
- CPSR cpsr = miscRegs[MISCREG_CPSR];
- switch (cpsr.mode) {
- case MODE_USER:
- return miscRegs[MISCREG_SPSR];
- case MODE_FIQ:
- return miscRegs[MISCREG_SPSR_FIQ];
- case MODE_IRQ:
- return miscRegs[MISCREG_SPSR_IRQ];
- case MODE_SVC:
- return miscRegs[MISCREG_SPSR_SVC];
- case MODE_MON:
- return miscRegs[MISCREG_SPSR_MON];
- case MODE_ABORT:
- return miscRegs[MISCREG_SPSR_ABT];
- case MODE_UNDEFINED:
- return miscRegs[MISCREG_SPSR_UND];
- default:
- return miscRegs[MISCREG_SPSR];
- }
- }
- return miscRegs[misc_reg];
- }
+ MiscReg readMiscRegNoEffect(int misc_reg);
- MiscReg
- readMiscReg(int misc_reg, ThreadContext *tc)
- {
- if (misc_reg == MISCREG_CPSR) {
- CPSR cpsr = miscRegs[misc_reg];
- Addr pc = tc->readPC();
- if (pc & (ULL(1) << PcJBitShift))
- cpsr.j = 1;
- else
- cpsr.j = 0;
- if (pc & (ULL(1) << PcTBitShift))
- cpsr.t = 1;
- else
- cpsr.t = 0;
- return cpsr;
- }
- if (misc_reg >= MISCREG_CP15_UNIMP_START &&
- misc_reg < MISCREG_CP15_END) {
- panic("Unimplemented CP15 register %s read.\n",
- miscRegName[misc_reg]);
- }
- switch (misc_reg) {
- case MISCREG_CLIDR:
- warn("The clidr register always reports 0 caches.\n");
- break;
- case MISCREG_CCSIDR:
- warn("The ccsidr register isn't implemented and "
- "always reads as 0.\n");
- break;
- case MISCREG_ID_PFR0:
- return 0x1031; // ThumbEE | !Jazelle | Thumb | ARM
- }
- return readMiscRegNoEffect(misc_reg);
- }
+ MiscReg readMiscReg(int misc_reg, ThreadContext *tc);
- void
- setMiscRegNoEffect(int misc_reg, const MiscReg &val)
- {
- assert(misc_reg < NumMiscRegs);
- if (misc_reg == MISCREG_SPSR) {
- CPSR cpsr = miscRegs[MISCREG_CPSR];
- switch (cpsr.mode) {
- case MODE_USER:
- miscRegs[MISCREG_SPSR] = val;
- return;
- case MODE_FIQ:
- miscRegs[MISCREG_SPSR_FIQ] = val;
- return;
- case MODE_IRQ:
- miscRegs[MISCREG_SPSR_IRQ] = val;
- return;
- case MODE_SVC:
- miscRegs[MISCREG_SPSR_SVC] = val;
- return;
- case MODE_MON:
- miscRegs[MISCREG_SPSR_MON] = val;
- return;
- case MODE_ABORT:
- miscRegs[MISCREG_SPSR_ABT] = val;
- return;
- case MODE_UNDEFINED:
- miscRegs[MISCREG_SPSR_UND] = val;
- return;
- default:
- miscRegs[MISCREG_SPSR] = val;
- return;
- }
- }
- miscRegs[misc_reg] = val;
- }
-
- void
- setMiscReg(int misc_reg, const MiscReg &val, ThreadContext *tc)
- {
- MiscReg newVal = val;
- if (misc_reg == MISCREG_CPSR) {
- updateRegMap(val);
- CPSR cpsr = val;
- DPRINTF(Arm, "Updating CPSR to %#x f:%d i:%d a:%d mode:%#x\n",
- cpsr, cpsr.f, cpsr.i, cpsr.a, cpsr.mode);
- Addr npc = tc->readNextPC() & ~PcModeMask;
- if (cpsr.j)
- npc = npc | (ULL(1) << PcJBitShift);
- if (cpsr.t)
- npc = npc | (ULL(1) << PcTBitShift);
+ void setMiscRegNoEffect(int misc_reg, const MiscReg &val);
- tc->setNextPC(npc);
- }
- if (misc_reg >= MISCREG_CP15_UNIMP_START &&
- misc_reg < MISCREG_CP15_END) {
- panic("Unimplemented CP15 register %s wrote with %#x.\n",
- miscRegName[misc_reg], val);
- }
- switch (misc_reg) {
- case MISCREG_CPACR:
- {
- CPACR newCpacr = 0;
- CPACR valCpacr = val;
- newCpacr.cp10 = valCpacr.cp10;
- newCpacr.cp11 = valCpacr.cp11;
- if (newCpacr.cp10 != 0x3 || newCpacr.cp11 != 3) {
- panic("Disabling coprocessors isn't implemented.\n");
- }
- newVal = newCpacr;
- }
- break;
- case MISCREG_CSSELR:
- warn("The csselr register isn't implemented.\n");
- break;
- case MISCREG_FPSCR:
- {
- const uint32_t ones = (uint32_t)(-1);
- FPSCR fpscrMask = 0;
- fpscrMask.ioc = ones;
- fpscrMask.dzc = ones;
- fpscrMask.ofc = ones;
- fpscrMask.ufc = ones;
- fpscrMask.ixc = ones;
- fpscrMask.idc = ones;
- fpscrMask.len = ones;
- fpscrMask.stride = ones;
- fpscrMask.rMode = ones;
- fpscrMask.fz = ones;
- fpscrMask.dn = ones;
- fpscrMask.ahp = ones;
- fpscrMask.qc = ones;
- fpscrMask.v = ones;
- fpscrMask.c = ones;
- fpscrMask.z = ones;
- fpscrMask.n = ones;
- newVal = (newVal & (uint32_t)fpscrMask) |
- (miscRegs[MISCREG_FPSCR] & ~(uint32_t)fpscrMask);
- }
- break;
- case MISCREG_FPEXC:
- {
- const uint32_t fpexcMask = 0x60000000;
- newVal = (newVal & fpexcMask) |
- (miscRegs[MISCREG_FPEXC] & ~fpexcMask);
- }
- break;
- case MISCREG_SCTLR:
- {
- SCTLR sctlr = miscRegs[MISCREG_SCTLR];
- SCTLR new_sctlr = newVal;
- new_sctlr.nmfi = (bool)sctlr.nmfi;
- miscRegs[MISCREG_SCTLR] = (MiscReg)new_sctlr;
- return;
- }
- case MISCREG_TLBTR:
- case MISCREG_MVFR0:
- case MISCREG_MVFR1:
- case MISCREG_MPIDR:
- case MISCREG_FPSID:
- return;
- case MISCREG_TLBIALLIS:
- case MISCREG_TLBIALL:
- warn("Need to flush all TLBs in MP\n");
- tc->getITBPtr()->flushAll();
- tc->getDTBPtr()->flushAll();
- return;
- case MISCREG_ITLBIALL:
- tc->getITBPtr()->flushAll();
- return;
- case MISCREG_DTLBIALL:
- tc->getDTBPtr()->flushAll();
- return;
- case MISCREG_TLBIMVAIS:
- case MISCREG_TLBIMVA:
- warn("Need to flush all TLBs in MP\n");
- tc->getITBPtr()->flushMvaAsid(mbits(newVal, 31, 12),
- bits(newVal, 7,0));
- tc->getDTBPtr()->flushMvaAsid(mbits(newVal, 31, 12),
- bits(newVal, 7,0));
- return;
- case MISCREG_TLBIASIDIS:
- case MISCREG_TLBIASID:
- warn("Need to flush all TLBs in MP\n");
- tc->getITBPtr()->flushAsid(bits(newVal, 7,0));
- tc->getDTBPtr()->flushAsid(bits(newVal, 7,0));
- return;
- case MISCREG_TLBIMVAAIS:
- case MISCREG_TLBIMVAA:
- warn("Need to flush all TLBs in MP\n");
- tc->getITBPtr()->flushMva(mbits(newVal, 31,12));
- tc->getDTBPtr()->flushMva(mbits(newVal, 31,12));
- return;
- case MISCREG_ITLBIMVA:
- tc->getITBPtr()->flushMvaAsid(mbits(newVal, 31, 12),
- bits(newVal, 7,0));
- return;
- case MISCREG_DTLBIMVA:
- tc->getDTBPtr()->flushMvaAsid(mbits(newVal, 31, 12),
- bits(newVal, 7,0));
- return;
- case MISCREG_ITLBIASID:
- tc->getITBPtr()->flushAsid(bits(newVal, 7,0));
- return;
- case MISCREG_DTLBIASID:
- tc->getDTBPtr()->flushAsid(bits(newVal, 7,0));
- return;
- }
- setMiscRegNoEffect(misc_reg, newVal);
- }
+ void setMiscReg(int misc_reg, const MiscReg &val, ThreadContext *tc);
int
flattenIntIndex(int reg)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 11:11:46 +0000