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+/*
+ * Copyright (c) 2003-2005 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * 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.
+ */
+
+#ifndef __ARCH_SPARC_REGFILE_HH__
+#define __ARCH_SPARC_REGFILE_HH__
+
+#include "arch/sparc/faults.hh"
+#include "base/trace.hh"
+#include "sim/byteswap.hh"
+#include "sim/host.hh"
+
+class Checkpoint;
+
+namespace SparcISA
+{
+
+ typedef uint8_t RegIndex;
+
+ // MAXTL - maximum trap level
+ const int MaxTL = 4;
+
+ // NWINDOWS - number of register windows, can be 3 to 32
+ const int NWindows = 32;
+
+ class IntRegFile
+ {
+ protected:
+ static const int FrameOffsetBits = 3;
+ static const int FrameNumBits = 2;
+
+ static const int RegsPerFrame = 1 << FrameOffsetBits;
+ static const int FrameNumMask =
+ (FrameNumBits == sizeof(int)) ?
+ (unsigned int)(-1) :
+ (1 << FrameNumBits) - 1;
+ static const int FrameOffsetMask =
+ (FrameOffsetBits == sizeof(int)) ?
+ (unsigned int)(-1) :
+ (1 << FrameOffsetBits) - 1;
+
+ IntReg regGlobals[RegsPerFrame];
+ IntReg altGlobals[RegsPerFrame];
+ IntReg regSegments[2 * NWindows][RegsPerFrame];
+
+ enum regFrame {Globals, Outputs, Locals, Inputs, NumFrames};
+
+ IntReg * regView[NumFrames];
+
+ static const int RegGlobalOffset = 0;
+ static const int AltGlobalOffset = 8;
+ static const int FrameOffset = 16;
+ int offset[NumFrames];
+
+ public:
+
+ int flattenIndex(int reg)
+ {
+ int flatIndex = offset[reg >> FrameOffsetBits]
+ | (reg & FrameOffsetMask);
+ DPRINTF(Sparc, "Flattened index %d into %d.\n", reg, flatIndex);
+ return flatIndex;
+ }
+
+ void clear()
+ {
+ bzero(regGlobals, sizeof(regGlobals));
+ bzero(altGlobals, sizeof(altGlobals));
+ for(int x = 0; x < 2 * NWindows; x++)
+ bzero(regSegments[x], sizeof(regSegments[x]));
+ }
+
+ IntRegFile()
+ {
+ offset[Globals] = 0;
+ regView[Globals] = regGlobals;
+ setCWP(0);
+ clear();
+ }
+
+ IntReg readReg(int intReg)
+ {
+ IntReg val =
+ regView[intReg >> FrameOffsetBits][intReg & FrameOffsetMask];
+ DPRINTF(Sparc, "Read register %d = 0x%x\n", intReg, val);
+ return val;
+ }
+
+ Fault setReg(int intReg, const IntReg &val)
+ {
+ if(intReg)
+ DPRINTF(Sparc, "Wrote register %d = 0x%x\n", intReg, val);
+ regView[intReg >> FrameOffsetBits][intReg & FrameOffsetMask] = val;
+ return NoFault;
+ }
+
+ //This doesn't effect the actual CWP register.
+ //It's purpose is to adjust the view of the register file
+ //to what it would be if CWP = cwp.
+ void setCWP(int cwp)
+ {
+ int index = ((NWindows - cwp) % NWindows) * 2;
+ offset[Outputs] = FrameOffset + (index * RegsPerFrame);
+ offset[Locals] = FrameOffset + ((index+1) * RegsPerFrame);
+ offset[Inputs] = FrameOffset +
+ (((index+2) % (NWindows * 2)) * RegsPerFrame);
+ regView[Outputs] = regSegments[index];
+ regView[Locals] = regSegments[index+1];
+ regView[Inputs] = regSegments[(index+2) % (NWindows * 2)];
+
+ DPRINTF(Sparc, "Changed the CWP value to %d\n", cwp);
+ }
+
+ void setAltGlobals(bool useAlt)
+ {
+ DPRINTF(Sparc, "Now using %s globals",
+ useAlt ? "alternate" : "regular");
+ regView[Globals] = useAlt ? altGlobals : regGlobals;
+
+ // You have not included an out-of-class definition of your static
+ // members. See [9.4.2]/4 and about a billion gcc bug reports. If
+ // statements get around the problem through some magic, and than
+ // seems nicer that putting a definition of them in a c file
+ // somewhere.
+ if (useAlt)
+ offset[Globals] = AltGlobalOffset;
+ else
+ offset[Globals] = RegGlobalOffset;
+ }
+
+ void serialize(std::ostream &os);
+
+ void unserialize(Checkpoint *cp, const std::string &section);
+ };
+
+ typedef float float32_t;
+ typedef double float64_t;
+ //FIXME long double refers to a 10 byte float, rather than a
+ //16 byte float as required. This data type may have to be emulated.
+ typedef double float128_t;
+
+ class FloatRegFile
+ {
+ public:
+ static const int SingleWidth = 32;
+ static const int DoubleWidth = 64;
+ static const int QuadWidth = 128;
+
+ protected:
+
+ //Since the floating point registers overlap each other,
+ //A generic storage space is used. The float to be returned is
+ //pulled from the appropriate section of this region.
+ char regSpace[SingleWidth / 8 * NumFloatRegs];
+
+ public:
+
+ void clear()
+ {
+ bzero(regSpace, sizeof(regSpace));
+ }
+
+ FloatReg readReg(int floatReg, int width)
+ {
+ //In each of these cases, we have to copy the value into a temporary
+ //variable. This is because we may otherwise try to access an
+ //unaligned portion of memory.
+ switch(width)
+ {
+ case SingleWidth:
+ float32_t result32;
+ memcpy(&result32, regSpace + 4 * floatReg, width);
+ return htog(result32);
+ case DoubleWidth:
+ float64_t result64;
+ memcpy(&result64, regSpace + 4 * floatReg, width);
+ return htog(result64);
+ case QuadWidth:
+ float128_t result128;
+ memcpy(&result128, regSpace + 4 * floatReg, width);
+ return htog(result128);
+ default:
+ panic("Attempted to read a %d bit floating point register!", width);
+ }
+ }
+
+ FloatRegBits readRegBits(int floatReg, int width)
+ {
+ //In each of these cases, we have to copy the value into a temporary
+ //variable. This is because we may otherwise try to access an
+ //unaligned portion of memory.
+ switch(width)
+ {
+ case SingleWidth:
+ uint32_t result32;
+ memcpy(&result32, regSpace + 4 * floatReg, width);
+ return htog(result32);
+ case DoubleWidth:
+ uint64_t result64;
+ memcpy(&result64, regSpace + 4 * floatReg, width);
+ return htog(result64);
+ case QuadWidth:
+ uint64_t result128;
+ memcpy(&result128, regSpace + 4 * floatReg, width);
+ return htog(result128);
+ default:
+ panic("Attempted to read a %d bit floating point register!", width);
+ }
+ }
+
+ Fault setReg(int floatReg, const FloatReg &val, int width)
+ {
+ //In each of these cases, we have to copy the value into a temporary
+ //variable. This is because we may otherwise try to access an
+ //unaligned portion of memory.
+ switch(width)
+ {
+ case SingleWidth:
+ uint32_t result32 = gtoh((uint32_t)val);
+ memcpy(regSpace + 4 * floatReg, &result32, width);
+ case DoubleWidth:
+ uint64_t result64 = gtoh((uint64_t)val);
+ memcpy(regSpace + 4 * floatReg, &result64, width);
+ case QuadWidth:
+ uint64_t result128 = gtoh((uint64_t)val);
+ memcpy(regSpace + 4 * floatReg, &result128, width);
+ default:
+ panic("Attempted to read a %d bit floating point register!", width);
+ }
+ return NoFault;
+ }
+
+ Fault setRegBits(int floatReg, const FloatRegBits &val, int width)
+ {
+ //In each of these cases, we have to copy the value into a temporary
+ //variable. This is because we may otherwise try to access an
+ //unaligned portion of memory.
+ switch(width)
+ {
+ case SingleWidth:
+ uint32_t result32 = gtoh((uint32_t)val);
+ memcpy(regSpace + 4 * floatReg, &result32, width);
+ case DoubleWidth:
+ uint64_t result64 = gtoh((uint64_t)val);
+ memcpy(regSpace + 4 * floatReg, &result64, width);
+ case QuadWidth:
+ uint64_t result128 = gtoh((uint64_t)val);
+ memcpy(regSpace + 4 * floatReg, &result128, width);
+ default:
+ panic("Attempted to read a %d bit floating point register!", width);
+ }
+ return NoFault;
+ }
+
+ void serialize(std::ostream &os);
+
+ void unserialize(Checkpoint *cp, const std::string &section);
+ };
+
+ enum MiscRegIndex
+ {
+ MISCREG_PSTATE,
+ MISCREG_PSTATE_AG,
+ MISCREG_PSTATE_IE,
+ MISCREG_PSTATE_PRIV,
+ MISCREG_PSTATE_AM,
+ MISCREG_PSTATE_PEF,
+ MISCREG_PSTATE_RED,
+ MISCREG_PSTATE_MM,
+ MISCREG_PSTATE_TLE,
+ MISCREG_PSTATE_CLE,
+ MISCREG_TBA,
+ MISCREG_Y,
+ MISCREG_Y_VALUE,
+ MISCREG_PIL,
+ MISCREG_CWP,
+ MISCREG_TT_BASE,
+ MISCREG_TT_END = MISCREG_TT_BASE + MaxTL,
+ MISCREG_CCR,
+ MISCREG_CCR_ICC,
+ MISCREG_CCR_ICC_C,
+ MISCREG_CCR_ICC_V,
+ MISCREG_CCR_ICC_Z,
+ MISCREG_CCR_ICC_N,
+ MISCREG_CCR_XCC,
+ MISCREG_CCR_XCC_C,
+ MISCREG_CCR_XCC_V,
+ MISCREG_CCR_XCC_Z,
+ MISCREG_CCR_XCC_N,
+ MISCREG_ASI,
+ MISCREG_TL,
+ MISCREG_TPC_BASE,
+ MISCREG_TPC_END = MISCREG_TPC_BASE + MaxTL,
+ MISCREG_TNPC_BASE,
+ MISCREG_TNPC_END = MISCREG_TNPC_BASE + MaxTL,
+ MISCREG_TSTATE_BASE,
+ MISCREG_TSTATE_END = MISCREG_TSTATE_BASE + MaxTL,
+ MISCREG_TSTATE_CWP_BASE,
+ MISCREG_TSTATE_CWP_END = MISCREG_TSTATE_CWP_BASE + MaxTL,
+ MISCREG_TSTATE_PSTATE_BASE,
+ MISCREG_TSTATE_PSTATE_END = MISCREG_TSTATE_PSTATE_BASE + MaxTL,
+ MISCREG_TSTATE_ASI_BASE,
+ MISCREG_TSTATE_ASI_END = MISCREG_TSTATE_ASI_BASE + MaxTL,
+ MISCREG_TSTATE_CCR_BASE,
+ MISCREG_TSTATE_CCR_END = MISCREG_TSTATE_CCR_BASE + MaxTL,
+ MISCREG_TICK,
+ MISCREG_TICK_COUNTER,
+ MISCREG_TICK_NPT,
+ MISCREG_CANSAVE,
+ MISCREG_CANRESTORE,
+ MISCREG_OTHERWIN,
+ MISCREG_CLEANWIN,
+ MISCREG_WSTATE,
+ MISCREG_WSTATE_NORMAL,
+ MISCREG_WSTATE_OTHER,
+ MISCREG_VER,
+ MISCREG_VER_MAXWIN,
+ MISCREG_VER_MAXTL,
+ MISCREG_VER_MASK,
+ MISCREG_VER_IMPL,
+ MISCREG_VER_MANUF,
+ MISCREG_FSR,
+ MISCREG_FSR_CEXC,
+ MISCREG_FSR_CEXC_NXC,
+ MISCREG_FSR_CEXC_DZC,
+ MISCREG_FSR_CEXC_UFC,
+ MISCREG_FSR_CEXC_OFC,
+ MISCREG_FSR_CEXC_NVC,
+ MISCREG_FSR_AEXC,
+ MISCREG_FSR_AEXC_NXC,
+ MISCREG_FSR_AEXC_DZC,
+ MISCREG_FSR_AEXC_UFC,
+ MISCREG_FSR_AEXC_OFC,
+ MISCREG_FSR_AEXC_NVC,
+ MISCREG_FSR_FCC0,
+ MISCREG_FSR_QNE,
+ MISCREG_FSR_FTT,
+ MISCREG_FSR_VER,
+ MISCREG_FSR_NS,
+ MISCREG_FSR_TEM,
+ MISCREG_FSR_TEM_NXM,
+ MISCREG_FSR_TEM_DZM,
+ MISCREG_FSR_TEM_UFM,
+ MISCREG_FSR_TEM_OFM,
+ MISCREG_FSR_TEM_NVM,
+ MISCREG_FSR_RD,
+ MISCREG_FSR_FCC1,
+ MISCREG_FSR_FCC2,
+ MISCREG_FSR_FCC3,
+ MISCREG_FPRS,
+ MISCREG_FPRS_DL,
+ MISCREG_FPRS_DU,
+ MISCREG_FPRS_FEF,
+ numMiscRegs
+ };
+
+ // The control registers, broken out into fields
+ class MiscRegFile
+ {
+ private:
+ union
+ {
+ uint16_t pstate; // Process State Register
+ struct
+ {
+ uint16_t ag:1; // Alternate Globals
+ uint16_t ie:1; // Interrupt enable
+ uint16_t priv:1; // Privelege mode
+ uint16_t am:1; // Address mask
+ uint16_t pef:1; // PSTATE enable floating-point
+ uint16_t red:1; // RED (reset, error, debug) state
+ uint16_t mm:2; // Memory Model
+ uint16_t tle:1; // Trap little-endian
+ uint16_t cle:1; // Current little-endian
+ } pstateFields;
+ };
+ uint64_t tba; // Trap Base Address
+ union
+ {
+ uint64_t y; // Y (used in obsolete multiplication)
+ struct
+ {
+ uint64_t value:32; // The actual value stored in y
+ uint64_t :32; // reserved bits
+ } yFields;
+ };
+ uint8_t pil; // Process Interrupt Register
+ uint8_t cwp; // Current Window Pointer
+ uint16_t tt[MaxTL]; // Trap Type (Type of trap which occured
+ // on the previous level)
+ union
+ {
+ uint8_t ccr; // Condition Code Register
+ struct
+ {
+ union
+ {
+ uint8_t icc:4; // 32-bit condition codes
+ struct
+ {
+ uint8_t c:1; // Carry
+ uint8_t v:1; // Overflow
+ uint8_t z:1; // Zero
+ uint8_t n:1; // Negative
+ } iccFields;
+ };
+ union
+ {
+ uint8_t xcc:4; // 64-bit condition codes
+ struct
+ {
+ uint8_t c:1; // Carry
+ uint8_t v:1; // Overflow
+ uint8_t z:1; // Zero
+ uint8_t n:1; // Negative
+ } xccFields;
+ };
+ } ccrFields;
+ };
+ uint8_t asi; // Address Space Identifier
+ uint8_t tl; // Trap Level
+ uint64_t tpc[MaxTL]; // Trap Program Counter (value from
+ // previous trap level)
+ uint64_t tnpc[MaxTL]; // Trap Next Program Counter (value from
+ // previous trap level)
+ union
+ {
+ uint64_t tstate[MaxTL]; // Trap State
+ struct
+ {
+ //Values are from previous trap level
+ uint64_t cwp:5; // Current Window Pointer
+ uint64_t :2; // Reserved bits
+ uint64_t pstate:10; // Process State
+ uint64_t :6; // Reserved bits
+ uint64_t asi:8; // Address Space Identifier
+ uint64_t ccr:8; // Condition Code Register
+ } tstateFields[MaxTL];
+ };
+ union
+ {
+ uint64_t tick; // Hardware clock-tick counter
+ struct
+ {
+ uint64_t counter:63; // Clock-tick count
+ uint64_t npt:1; // Non-priveleged trap
+ } tickFields;
+ };
+ uint8_t cansave; // Savable windows
+ uint8_t canrestore; // Restorable windows
+ uint8_t otherwin; // Other windows
+ uint8_t cleanwin; // Clean windows
+ union
+ {
+ uint8_t wstate; // Window State
+ struct
+ {
+ uint8_t normal:3; // Bits TT<4:2> are set to on a normal
+ // register window trap
+ uint8_t other:3; // Bits TT<4:2> are set to on an "otherwin"
+ // register window trap
+ } wstateFields;
+ };
+ union
+ {
+ uint64_t ver; // Version
+ struct
+ {
+ uint64_t maxwin:5; // Max CWP value
+ uint64_t :2; // Reserved bits
+ uint64_t maxtl:8; // Maximum trap level
+ uint64_t :8; // Reserved bits
+ uint64_t mask:8; // Processor mask set revision number
+ uint64_t impl:16; // Implementation identification number
+ uint64_t manuf:16; // Manufacturer code
+ } verFields;
+ };
+ union
+ {
+ uint64_t fsr; // Floating-Point State Register
+ struct
+ {
+ union
+ {
+ uint64_t cexc:5; // Current excpetion
+ struct
+ {
+ uint64_t nxc:1; // Inexact
+ uint64_t dzc:1; // Divide by zero
+ uint64_t ufc:1; // Underflow
+ uint64_t ofc:1; // Overflow
+ uint64_t nvc:1; // Invalid operand
+ } cexcFields;
+ };
+ union
+ {
+ uint64_t aexc:5; // Accrued exception
+ struct
+ {
+ uint64_t nxc:1; // Inexact
+ uint64_t dzc:1; // Divide by zero
+ uint64_t ufc:1; // Underflow
+ uint64_t ofc:1; // Overflow
+ uint64_t nvc:1; // Invalid operand
+ } aexcFields;
+ };
+ uint64_t fcc0:2; // Floating-Point condtion codes
+ uint64_t :1; // Reserved bits
+ uint64_t qne:1; // Deferred trap queue not empty
+ // with no queue, it should read 0
+ uint64_t ftt:3; // Floating-Point trap type
+ uint64_t ver:3; // Version (of the FPU)
+ uint64_t :2; // Reserved bits
+ uint64_t ns:1; // Nonstandard floating point
+ union
+ {
+ uint64_t tem:5; // Trap Enable Mask
+ struct
+ {
+ uint64_t nxm:1; // Inexact
+ uint64_t dzm:1; // Divide by zero
+ uint64_t ufm:1; // Underflow
+ uint64_t ofm:1; // Overflow
+ uint64_t nvm:1; // Invalid operand
+ } temFields;
+ };
+ uint64_t :2; // Reserved bits
+ uint64_t rd:2; // Rounding direction
+ uint64_t fcc1:2; // Floating-Point condition codes
+ uint64_t fcc2:2; // Floating-Point condition codes
+ uint64_t fcc3:2; // Floating-Point condition codes
+ uint64_t :26; // Reserved bits
+ } fsrFields;
+ };
+ union
+ {
+ uint8_t fprs; // Floating-Point Register State
+ struct
+ {
+ uint8_t dl:1; // Dirty lower
+ uint8_t du:1; // Dirty upper
+ uint8_t fef:1; // FPRS enable floating-Point
+ } fprsFields;
+ };
+
+ public:
+
+ void reset()
+ {
+ pstateFields.pef = 0; //No FPU
+ //pstateFields.pef = 1; //FPU
+#if FULL_SYSTEM
+ //For SPARC, when a system is first started, there is a power
+ //on reset Trap which sets the processor into the following state.
+ //Bits that aren't set aren't defined on startup.
+ tl = MaxTL;
+ tt[tl] = PowerOnReset.trapType();
+ pstateFields.mm = 0; //Total Store Order
+ pstateFields.red = 1; //Enter RED_State
+ pstateFields.am = 0; //Address Masking is turned off
+ pstateFields.priv = 1; //Processor enters privileged mode
+ pstateFields.ie = 0; //Interrupts are disabled
+ pstateFields.ag = 1; //Globals are replaced with alternate globals
+ pstateFields.tle = 0; //Big Endian mode for traps
+ pstateFields.cle = 0; //Big Endian mode for non-traps
+ tickFields.npt = 1; //The TICK register is unreadable by
+ //non-priveleged software
+#else
+/* //This sets up the initial state of the processor for usermode processes
+ pstateFields.priv = 0; //Process runs in user mode
+ pstateFields.ie = 1; //Interrupts are enabled
+ fsrFields.rd = 0; //Round to nearest
+ fsrFields.tem = 0; //Floating point traps not enabled
+ fsrFields.ns = 0; //Non standard mode off
+ fsrFields.qne = 0; //Floating point queue is empty
+ fsrFields.aexc = 0; //No accrued exceptions
+ fsrFields.cexc = 0; //No current exceptions
+
+ //Register window management registers
+ otherwin = 0; //No windows contain info from other programs
+ canrestore = 0; //There are no windows to pop
+ cansave = MaxTL - 2; //All windows are available to save into
+ cleanwin = MaxTL;*/
+#endif
+ }
+
+ MiscRegFile()
+ {
+ reset();
+ }
+
+ MiscReg readReg(int miscReg);
+
+ MiscReg readRegWithEffect(int miscReg, Fault &fault, ExecContext *xc);
+
+ Fault setReg(int miscReg, const MiscReg &val);
+
+ Fault setRegWithEffect(int miscReg,
+ const MiscReg &val, ExecContext * xc);
+
+ void serialize(std::ostream & os);
+
+ void unserialize(Checkpoint * cp, const std::string & section);
+
+ void copyMiscRegs(ExecContext * xc);
+ };
+
+ typedef union
+ {
+ IntReg intreg;
+ FloatReg fpreg;
+ MiscReg ctrlreg;
+ } AnyReg;
+
+ class RegFile
+ {
+ protected:
+ Addr pc; // Program Counter
+ Addr npc; // Next Program Counter
+ Addr nnpc;
+
+ public:
+ Addr readPC()
+ {
+ return pc;
+ }
+
+ void setPC(Addr val)
+ {
+ pc = val;
+ }
+
+ Addr readNextPC()
+ {
+ return npc;
+ }
+
+ void setNextPC(Addr val)
+ {
+ npc = val;
+ }
+
+ Addr readNextNPC()
+ {
+ return nnpc;
+ }
+
+ void setNextNPC(Addr val)
+ {
+ nnpc = val;
+ }
+
+ protected:
+ IntRegFile intRegFile; // integer register file
+ FloatRegFile floatRegFile; // floating point register file
+ MiscRegFile miscRegFile; // control register file
+
+ public:
+
+ void clear()
+ {
+ intRegFile.clear();
+ floatRegFile.clear();
+ }
+
+ int flattenIntIndex(int reg)
+ {
+ return intRegFile.flattenIndex(reg);
+ }
+
+ MiscReg readMiscReg(int miscReg)
+ {
+ return miscRegFile.readReg(miscReg);
+ }
+
+ MiscReg readMiscRegWithEffect(int miscReg,
+ Fault &fault, ExecContext *xc)
+ {
+ return miscRegFile.readRegWithEffect(miscReg, fault, xc);
+ }
+
+ Fault setMiscReg(int miscReg, const MiscReg &val)
+ {
+ return miscRegFile.setReg(miscReg, val);
+ }
+
+ Fault setMiscRegWithEffect(int miscReg, const MiscReg &val,
+ ExecContext * xc)
+ {
+ return miscRegFile.setRegWithEffect(miscReg, val, xc);
+ }
+
+ FloatReg readFloatReg(int floatReg, int width)
+ {
+ return floatRegFile.readReg(floatReg, width);
+ }
+
+ FloatReg readFloatReg(int floatReg)
+ {
+ //Use the "natural" width of a single float
+ return floatRegFile.readReg(floatReg, FloatRegFile::SingleWidth);
+ }
+
+ FloatRegBits readFloatRegBits(int floatReg, int width)
+ {
+ return floatRegFile.readRegBits(floatReg, width);
+ }
+
+ FloatRegBits readFloatRegBits(int floatReg)
+ {
+ //Use the "natural" width of a single float
+ return floatRegFile.readRegBits(floatReg,
+ FloatRegFile::SingleWidth);
+ }
+
+ Fault setFloatReg(int floatReg, const FloatReg &val, int width)
+ {
+ return floatRegFile.setReg(floatReg, val, width);
+ }
+
+ Fault setFloatReg(int floatReg, const FloatReg &val)
+ {
+ //Use the "natural" width of a single float
+ return setFloatReg(floatReg, val, FloatRegFile::SingleWidth);
+ }
+
+ Fault setFloatRegBits(int floatReg, const FloatRegBits &val, int width)
+ {
+ return floatRegFile.setRegBits(floatReg, val, width);
+ }
+
+ Fault setFloatRegBits(int floatReg, const FloatRegBits &val)
+ {
+ //Use the "natural" width of a single float
+ return floatRegFile.setRegBits(floatReg, val,
+ FloatRegFile::SingleWidth);
+ }
+
+ IntReg readIntReg(int intReg)
+ {
+ return intRegFile.readReg(intReg);
+ }
+
+ Fault setIntReg(int intReg, const IntReg &val)
+ {
+ return intRegFile.setReg(intReg, val);
+ }
+
+ void serialize(std::ostream &os);
+ void unserialize(Checkpoint *cp, const std::string &section);
+
+ public:
+
+ enum ContextParam
+ {
+ CONTEXT_CWP,
+ CONTEXT_GLOBALS
+ };
+
+ union ContextVal
+ {
+ MiscReg reg;
+ bool altGlobals;
+ };
+
+ void changeContext(ContextParam param, ContextVal val)
+ {
+ switch(param)
+ {
+ case CONTEXT_CWP:
+ intRegFile.setCWP(val.reg);
+ break;
+ case CONTEXT_GLOBALS:
+ intRegFile.setAltGlobals(val.altGlobals);
+ break;
+ default:
+ panic("Tried to set illegal context parameter in the SPARC regfile.\n");
+ }
+ }
+ };
+
+ void copyRegs(ExecContext *src, ExecContext *dest);
+
+ void copyMiscRegs(ExecContext *src, ExecContext *dest);
+
+} // namespace SparcISA
+
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-21 16:36:56 +0000