sanchayanmaity/gem5
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

have multiple global levels (as required by UA2005)

Browse source 
--HG--
extra : convert_revision : 027b89f3a42a2ba061e892d07aee768ff0afc49d
This commit is contained in:
Ali Saidi 2006-05-22 17:38:00 -04:00
parent c88f0810c0
commit 28ea972942
1 changed files with 19 additions and 24 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

43
src/arch/sparc/regfile.hh
View file

@ -42,7 +42,10 @@ namespace SparcISA
typedef uint8_t RegIndex; typedef uint8_t RegIndex;
// MAXTL - maximum trap level // MAXTL - maximum trap level
const int MaxTL = 4; const int MaxPTL = 6;
const int MaxTL = 6;
const int MaxGL = 3;
const int MaxPGL = 2;
// NWINDOWS - number of register windows, can be 3 to 32 // NWINDOWS - number of register windows, can be 3 to 32
const int NWindows = 32; const int NWindows = 32;
@ -63,8 +66,7 @@ namespace SparcISA
(unsigned int)(-1) : (unsigned int)(-1) :
(1 << FrameOffsetBits) - 1; (1 << FrameOffsetBits) - 1;
IntReg regGlobals[RegsPerFrame]; IntReg regGlobals[MaxGL][RegsPerFrame];
IntReg altGlobals[RegsPerFrame];
IntReg regSegments[2 * NWindows][RegsPerFrame]; IntReg regSegments[2 * NWindows][RegsPerFrame];
enum regFrame {Globals, Outputs, Locals, Inputs, NumFrames}; enum regFrame {Globals, Outputs, Locals, Inputs, NumFrames};
@ -72,8 +74,7 @@ namespace SparcISA
IntReg * regView[NumFrames]; IntReg * regView[NumFrames];
static const int RegGlobalOffset = 0; static const int RegGlobalOffset = 0;
static const int AltGlobalOffset = 8; static const int FrameOffset = MaxGL * RegsPerFrame;
static const int FrameOffset = 16;
int offset[NumFrames]; int offset[NumFrames];
public: public:
@ -88,8 +89,9 @@ namespace SparcISA
void clear() void clear()
{ {
bzero(regGlobals, sizeof(regGlobals)); int x;
bzero(altGlobals, sizeof(altGlobals)); for (x = 0; x < MaxGL; x++)
memset(regGlobals[x], 0, sizeof(regGlobals[x]));
for(int x = 0; x < 2 * NWindows; x++) for(int x = 0; x < 2 * NWindows; x++)
bzero(regSegments[x], sizeof(regSegments[x])); bzero(regSegments[x], sizeof(regSegments[x]));
} }
@ -97,7 +99,7 @@ namespace SparcISA
IntRegFile() IntRegFile()
{ {
offset[Globals] = 0; offset[Globals] = 0;
regView[Globals] = regGlobals; regView[Globals] = regGlobals[0];
setCWP(0); setCWP(0);
clear(); clear();
} }
@ -135,21 +137,13 @@ namespace SparcISA
DPRINTF(Sparc, "Changed the CWP value to %d\n", cwp); DPRINTF(Sparc, "Changed the CWP value to %d\n", cwp);
} }
void setAltGlobals(bool useAlt) void setGlobals(int gl)
{ {
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 DPRINTF(Sparc, "Now using %d globals", gl);
// members. See [9.4.2]/4 and about a billion gcc bug reports. If
// statements get around the problem through some magic, and than regView[Globals] = regGlobals[gl];
// seems nicer that putting a definition of them in a c file offset[Globals] = RegGlobalOffset + gl * RegsPerFrame;
// somewhere.
if (useAlt)
offset[Globals] = AltGlobalOffset;
else
offset[Globals] = RegGlobalOffset;
} }
void serialize(std::ostream &os); void serialize(std::ostream &os);
@ -587,6 +581,7 @@ namespace SparcISA
pstateFields.ag = 1; //Globals are replaced with alternate globals pstateFields.ag = 1; //Globals are replaced with alternate globals
pstateFields.tle = 0; //Big Endian mode for traps pstateFields.tle = 0; //Big Endian mode for traps
pstateFields.cle = 0; //Big Endian mode for non-traps pstateFields.cle = 0; //Big Endian mode for non-traps
tickFields.counter = 0; //The TICK register is unreadable by
tickFields.npt = 1; //The TICK register is unreadable by tickFields.npt = 1; //The TICK register is unreadable by
//non-priveleged software //non-priveleged software
#else #else
@ -687,7 +682,7 @@ namespace SparcISA
floatRegFile.clear(); floatRegFile.clear();
} }
int flattenIntIndex(int reg) int FlattenIntIndex(int reg)
{ {
return intRegFile.flattenIndex(reg); return intRegFile.flattenIndex(reg);
} }
@ -784,7 +779,7 @@ namespace SparcISA
union ContextVal union ContextVal
{ {
MiscReg reg; MiscReg reg;
bool altGlobals; int globalLevel;
}; };
void changeContext(ContextParam param, ContextVal val) void changeContext(ContextParam param, ContextVal val)
@ -795,7 +790,7 @@ namespace SparcISA
intRegFile.setCWP(val.reg); intRegFile.setCWP(val.reg);
break; break;
case CONTEXT_GLOBALS: case CONTEXT_GLOBALS:
intRegFile.setAltGlobals(val.altGlobals); intRegFile.setGlobals(val.globalLevel);
break; break;
default: default:
panic("Tried to set illegal context parameter in the SPARC regfile.\n"); panic("Tried to set illegal context parameter in the SPARC regfile.\n");