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authorAli Saidi <saidi@eecs.umich.edu>2006-05-22 17:38:00 -0400
committerAli Saidi <saidi@eecs.umich.edu>2006-05-22 17:38:00 -0400
commit28ea9729427d2c994d54f0548f80afaeb221b88f (patch)
tree5557df0f78a0921e8f4110b112512812f8dc1313 /src/arch/sparc/regfile.hh
parentc88f0810c05c5e206baf561f56225a41c776b38f (diff)
downloadgem5-28ea9729427d2c994d54f0548f80afaeb221b88f.tar.xz
have multiple global levels (as required by UA2005)
--HG-- extra : convert_revision : 027b89f3a42a2ba061e892d07aee768ff0afc49d
Diffstat (limited to 'src/arch/sparc/regfile.hh')
-rw-r--r--src/arch/sparc/regfile.hh43
1 files changed, 19 insertions, 24 deletions
diff --git a/src/arch/sparc/regfile.hh b/src/arch/sparc/regfile.hh
index 5169a332f..96f36eb91 100644
--- a/src/arch/sparc/regfile.hh
+++ b/src/arch/sparc/regfile.hh
@@ -42,7 +42,10 @@ namespace SparcISA
typedef uint8_t RegIndex;
// 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
const int NWindows = 32;
@@ -63,8 +66,7 @@ namespace SparcISA
(unsigned int)(-1) :
(1 << FrameOffsetBits) - 1;
- IntReg regGlobals[RegsPerFrame];
- IntReg altGlobals[RegsPerFrame];
+ IntReg regGlobals[MaxGL][RegsPerFrame];
IntReg regSegments[2 * NWindows][RegsPerFrame];
enum regFrame {Globals, Outputs, Locals, Inputs, NumFrames};
@@ -72,8 +74,7 @@ namespace SparcISA
IntReg * regView[NumFrames];
static const int RegGlobalOffset = 0;
- static const int AltGlobalOffset = 8;
- static const int FrameOffset = 16;
+ static const int FrameOffset = MaxGL * RegsPerFrame;
int offset[NumFrames];
public:
@@ -88,8 +89,9 @@ namespace SparcISA
void clear()
{
- bzero(regGlobals, sizeof(regGlobals));
- bzero(altGlobals, sizeof(altGlobals));
+ int x;
+ for (x = 0; x < MaxGL; x++)
+ memset(regGlobals[x], 0, sizeof(regGlobals[x]));
for(int x = 0; x < 2 * NWindows; x++)
bzero(regSegments[x], sizeof(regSegments[x]));
}
@@ -97,7 +99,7 @@ namespace SparcISA
IntRegFile()
{
offset[Globals] = 0;
- regView[Globals] = regGlobals;
+ regView[Globals] = regGlobals[0];
setCWP(0);
clear();
}
@@ -135,21 +137,13 @@ namespace SparcISA
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
- // 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;
+ DPRINTF(Sparc, "Now using %d globals", gl);
+
+ regView[Globals] = regGlobals[gl];
+ offset[Globals] = RegGlobalOffset + gl * RegsPerFrame;
}
void serialize(std::ostream &os);
@@ -587,6 +581,7 @@ namespace SparcISA
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.counter = 0; //The TICK register is unreadable by
tickFields.npt = 1; //The TICK register is unreadable by
//non-priveleged software
#else
@@ -687,7 +682,7 @@ namespace SparcISA
floatRegFile.clear();
}
- int flattenIntIndex(int reg)
+ int FlattenIntIndex(int reg)
{
return intRegFile.flattenIndex(reg);
}
@@ -784,7 +779,7 @@ namespace SparcISA
union ContextVal
{
MiscReg reg;
- bool altGlobals;
+ int globalLevel;
};
void changeContext(ContextParam param, ContextVal val)
@@ -795,7 +790,7 @@ namespace SparcISA
intRegFile.setCWP(val.reg);
break;
case CONTEXT_GLOBALS:
- intRegFile.setAltGlobals(val.altGlobals);
+ intRegFile.setGlobals(val.globalLevel);
break;
default:
panic("Tried to set illegal context parameter in the SPARC regfile.\n");