--- /dev/null
+/*
+ * 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.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ * Ali Saidi
+ */
+
+#include "arch/arm/isa.hh"
+
+namespace ArmISA
+{
+
+MiscReg
+ISA::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
+ISA::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);
+}
+
+void
+ISA::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
+ISA::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);
+
+ 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);
+}
+
+}
//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)
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