From 8e4ec55703305efff059bce2bab0af3eeec561e6 Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Tue, 14 Mar 2006 15:55:00 -0500
Subject: Changed the floating point register file into a class with
 appropriate accessor functions. The width of the floating point register to
 access can be specified, and if not, it will be accessed at its "natural"
 width. That is, the width of each individual register. Also, the functions
 which access the bit representation of floating point registers can use the
 blahblahBits functions now instead of blahblahInt.

arch/alpha/arguments.cc:
    Renamed readFloatRegInt to readFloatRegBits
arch/alpha/ev5.cc:
    Removed the Double from setFloatRegDouble
arch/alpha/registerfile.hh:
    Changed the floating point register file from a union of arrays to a class with appropriate accessor functions. The interface is necessary for SPARC.
arch/alpha/types.hh:
    Changed the FloatReg type from a union of uint64_t and double to a double, and defined a new type FloatRegBits which is a uint64_t and is used to return the bits which compose a floating point register rather than the value of the register.
arch/isa_parser.py:
    Adjusted the makeRead and makeWrite functions to generate the new versions of readFloatReg and setFloatReg.
base/remote_gdb.cc:
kern/tru64/tru64.hh:
    Replaced setFloatRegInt with setFloatRegBits
cpu/cpu_exec_context.cc:
    Removed the duplicated code for setting the floating point registers, and renamed the function to setFloatRegBits and readFloatRegBits.
cpu/cpu_exec_context.hh:
cpu/exec_context.hh:
cpu/o3/alpha_cpu_impl.hh:
cpu/o3/alpha_dyn_inst.hh:
cpu/o3/cpu.cc:
cpu/o3/cpu.hh:
cpu/o3/regfile.hh:
cpu/ozone/cpu.hh:
cpu/simple/cpu.hh:
    Implemented the new versions of the floating point read and set functions.
cpu/simple/cpu.cc:
    Replaced setFloatRegDouble with setFloatReg

--HG--
extra : convert_revision : 3dad06224723137f6033c335fb8f6395636767f2
---
 cpu/simple/cpu.cc |  2 +-
 cpu/simple/cpu.hh | 39 +++++++++++++++++++++++++++------------
 2 files changed, 28 insertions(+), 13 deletions(-)

(limited to 'cpu/simple')

diff --git a/cpu/simple/cpu.cc b/cpu/simple/cpu.cc
index 6e8764709..b335944e9 100644
--- a/cpu/simple/cpu.cc
+++ b/cpu/simple/cpu.cc
@@ -941,7 +941,7 @@ SimpleCPU::tick()
     // maintain $r0 semantics
     cpuXC->setIntReg(ZeroReg, 0);
 #if THE_ISA == ALPHA_ISA
-    cpuXC->setFloatRegDouble(ZeroReg, 0.0);
+    cpuXC->setFloatReg(ZeroReg, 0.0);
 #endif // ALPHA_ISA
 
     if (status() == IcacheAccessComplete) {
diff --git a/cpu/simple/cpu.hh b/cpu/simple/cpu.hh
index 21944a49f..c1cf7ce96 100644
--- a/cpu/simple/cpu.hh
+++ b/cpu/simple/cpu.hh
@@ -80,6 +80,8 @@ class SimpleCPU : public BaseCPU
   protected:
     typedef TheISA::MachInst MachInst;
     typedef TheISA::MiscReg MiscReg;
+    typedef TheISA::FloatReg FloatReg;
+    typedef TheISA::FloatRegBits FloatRegBits;
     class CpuPort : public Port
     {
 
@@ -322,22 +324,28 @@ class SimpleCPU : public BaseCPU
         return cpuXC->readIntReg(si->srcRegIdx(idx));
     }
 
-    float readFloatRegSingle(const StaticInst *si, int idx)
+    FloatReg readFloatReg(const StaticInst *si, int idx, int width)
     {
         int reg_idx = si->srcRegIdx(idx) - TheISA::FP_Base_DepTag;
-        return cpuXC->readFloatRegSingle(reg_idx);
+        return cpuXC->readFloatReg(reg_idx, width);
     }
 
-    double readFloatRegDouble(const StaticInst *si, int idx)
+    FloatReg readFloatReg(const StaticInst *si, int idx)
     {
         int reg_idx = si->srcRegIdx(idx) - TheISA::FP_Base_DepTag;
-        return cpuXC->readFloatRegDouble(reg_idx);
+        return cpuXC->readFloatReg(reg_idx);
     }
 
-    uint64_t readFloatRegInt(const StaticInst *si, int idx)
+    FloatRegBits readFloatRegBits(const StaticInst *si, int idx, int width)
     {
         int reg_idx = si->srcRegIdx(idx) - TheISA::FP_Base_DepTag;
-        return cpuXC->readFloatRegInt(reg_idx);
+        return cpuXC->readFloatRegBits(reg_idx, width);
+    }
+
+    FloatRegBits readFloatRegBits(const StaticInst *si, int idx)
+    {
+        int reg_idx = si->srcRegIdx(idx) - TheISA::FP_Base_DepTag;
+        return cpuXC->readFloatRegBits(reg_idx);
     }
 
     void setIntReg(const StaticInst *si, int idx, uint64_t val)
@@ -345,22 +353,29 @@ class SimpleCPU : public BaseCPU
         cpuXC->setIntReg(si->destRegIdx(idx), val);
     }
 
-    void setFloatRegSingle(const StaticInst *si, int idx, float val)
+    void setFloatReg(const StaticInst *si, int idx, FloatReg val, int width)
+    {
+        int reg_idx = si->destRegIdx(idx) - TheISA::FP_Base_DepTag;
+        cpuXC->setFloatReg(reg_idx, val, width);
+    }
+
+    void setFloatReg(const StaticInst *si, int idx, FloatReg val)
     {
         int reg_idx = si->destRegIdx(idx) - TheISA::FP_Base_DepTag;
-        cpuXC->setFloatRegSingle(reg_idx, val);
+        cpuXC->setFloatReg(reg_idx, val);
     }
 
-    void setFloatRegDouble(const StaticInst *si, int idx, double val)
+    void setFloatRegBits(const StaticInst *si, int idx,
+            FloatRegBits val, int width)
     {
         int reg_idx = si->destRegIdx(idx) - TheISA::FP_Base_DepTag;
-        cpuXC->setFloatRegDouble(reg_idx, val);
+        cpuXC->setFloatRegBits(reg_idx, val, width);
     }
 
-    void setFloatRegInt(const StaticInst *si, int idx, uint64_t val)
+    void setFloatRegBits(const StaticInst *si, int idx, FloatRegBits val)
     {
         int reg_idx = si->destRegIdx(idx) - TheISA::FP_Base_DepTag;
-        cpuXC->setFloatRegInt(reg_idx, val);
+        cpuXC->setFloatRegBits(reg_idx, val);
     }
 
     uint64_t readPC() { return cpuXC->readPC(); }
-- 
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