Changes to put all the misc regs within the misc reg file. This includes the FPCR, Uniq, lock flag, lock addr, and IPRs.

They are now accessed by calling readMiscReg()/setMiscReg() on the XC.  Old IPR accesses are supported by using readMiscRegWithEffect() and setMiscRegWithEffect() (names may change in the future).

arch/alpha/alpha_memory.cc:
    Change accesses to IPR to go through the XC.
arch/alpha/ev5.cc:
    Change accesses for IPRs to go through the misc regs.
arch/alpha/isa/decoder.isa:
    Change accesses to IPRs to go through the misc regs.  readIpr() and setIpr() are now changed to calls to readMiscRegWithEffect() and setMiscRegWithEffect().
arch/alpha/isa/fp.isa:
    Change accesses to IPRs and Fpcr to go through the misc regs.
arch/alpha/isa/main.isa:
    Add support for all misc regs being accessed through readMiscReg() and setMiscReg().  Instead of readUniq and readFpcr, they are replaced by calls with Uniq_DepTag and Fpcr_DepTag passed in as the register index.
arch/alpha/isa_traits.hh:
    Change the MiscRegFile to a class that handles all accesses to MiscRegs, which in Alpha include the FPCR, Uniq, Lock Addr, Lock Flag, and IPRs.
    Two flavors of accesses are supported: normal register reads/writes, and reads/writes with effect.  The latter are basically the original read/write IPR functions, while the former are normal reads/writes.

    The lock flag and lock addr registers are added to the dependence tags in order to support being accessed through the misc regs.
arch/alpha/stacktrace.cc:
cpu/simple/cpu.cc:
dev/sinic.cc:
    Change accesses to the IPRs to go through the XC.
arch/alpha/vtophys.cc:
    Change access to the IPR to go through the XC.
arch/isa_parser.py:
    Change generation of code for control registers to use the readMiscReg and setMiscReg functions.
base/remote_gdb.cc:
    Change accesses to the IPR to go through the XC.
cpu/exec_context.hh:
    Use the miscRegs to access the lock addr, lock flag, and other misc registers.
cpu/o3/alpha_cpu.hh:
cpu/simple/cpu.hh:
    Support interface for reading and writing misc registers, which replaces readUniq, readFpcr, readIpr, and their set functions.
cpu/o3/alpha_cpu_impl.hh:
    Change accesses to the IPRs to go through the miscRegs.
    For now comment out some of the accesses to the misc regs until the proxy exec context is completed.
cpu/o3/alpha_dyn_inst.hh:
    Change accesses to misc regs to use readMiscReg and setMiscReg.
cpu/o3/alpha_dyn_inst_impl.hh:
    Remove old misc reg accessors.
cpu/o3/cpu.cc:
    Comment out old misc reg accesses until the proxy exec context is completed.
cpu/o3/cpu.hh:
    Change accesses to the misc regs.
cpu/o3/regfile.hh:
    Remove old access methods for the misc regs, replace them with readMiscReg and setMiscReg.  They are dummy functions for now until the proxy exec context is completed.
kern/kernel_stats.cc:
kern/system_events.cc:
    Have accesses to the IPRs go through the XC.
kern/tru64/tru64.hh:
    Have accesses to the misc regs use the new access methods.

--HG--
extra : convert_revision : e32e0a3fe99522e17294bbe106ff5591cb1a9d76

3 files changed, 13 insertions, 10 deletions

diff --git a/arch/alpha/isa/decoder.isa b/arch/alpha/isa/decoder.isa
index 37b15416b..c72f14a71 100644
--- a/arch/alpha/isa/decoder.isa
+++ b/arch/alpha/isa/decoder.isa
@@ -618,7 +618,7 @@ decode OPCODE default Unknown::unknown() {
         /* Rb is a fake dependency so here is a fun way to get
          * the parser to understand that.
          */
-                Ra = xc->readIpr(AlphaISA::IPR_CC, fault) + (Rb & 0);
+                Ra = xc->readMiscRegWithEffect(AlphaISA::IPR_CC, fault) + (Rb & 0);
 
 #else
                 Ra = curTick;
@@ -670,7 +670,7 @@ decode OPCODE default Unknown::unknown() {
     0x00: CallPal::call_pal({{
         if (!palValid ||
             (palPriv
-             && xc->readIpr(AlphaISA::IPR_ICM, fault) != AlphaISA::mode_kernel)) {
+             && xc->readMiscRegWithEffect(AlphaISA::IPR_ICM, fault) != AlphaISA::mode_kernel)) {
             // invalid pal function code, or attempt to do privileged
             // PAL call in non-kernel mode
             fault = UnimplementedOpcodeFault;
@@ -682,8 +682,8 @@ decode OPCODE default Unknown::unknown() {
 
             if (dopal) {
                 AlphaISA::swap_palshadow(&xc->xcBase()->regs, true);
-                xc->setIpr(AlphaISA::IPR_EXC_ADDR, NPC);
-                NPC = xc->readIpr(AlphaISA::IPR_PAL_BASE, fault) + palOffset;
+                xc->setMiscRegWithEffect(AlphaISA::IPR_EXC_ADDR, NPC);
+                NPC = xc->readMiscRegWithEffect(AlphaISA::IPR_PAL_BASE, fault) + palOffset;
             }
         }
     }}, IsNonSpeculative);
@@ -732,7 +732,7 @@ decode OPCODE default Unknown::unknown() {
                 fault = UnimplementedOpcodeFault;
             }
             else {
-                Ra = xc->readIpr(ipr_index, fault);
+                Ra = xc->readMiscRegWithEffect(ipr_index, fault);
             }
         }});
         0x1d: hw_mtpr({{
@@ -741,7 +741,7 @@ decode OPCODE default Unknown::unknown() {
                 fault = UnimplementedOpcodeFault;
             }
             else {
-                xc->setIpr(ipr_index, Ra);
+                xc->setMiscRegWithEffect(ipr_index, Ra);
                 if (traceData) { traceData->setData(Ra); }
             }
         }});
diff --git a/arch/alpha/isa/fp.isa b/arch/alpha/isa/fp.isa
index 7e81fb830..20a564045 100644
--- a/arch/alpha/isa/fp.isa
+++ b/arch/alpha/isa/fp.isa
@@ -35,7 +35,7 @@ output exec {{
     inline Fault checkFpEnableFault(%(CPU_exec_context)s *xc)
     {
         Fault fault = NoFault;	// dummy... this ipr access should not fault
-        if (!EV5::ICSR_FPE(xc->readIpr(AlphaISA::IPR_ICSR, fault))) {
+        if (!EV5::ICSR_FPE(xc->readMiscRegWithEffect(AlphaISA::IPR_ICSR, fault))) {
             fault = FloatEnableFault;
         }
         return fault;
@@ -217,7 +217,8 @@ def template FloatingPointExecute {{
         if (roundingMode == Normal) {
             %(code)s;
         } else {
-            fesetround(getC99RoundingMode(xc->readFpcr()));
+            fesetround(getC99RoundingMode(
+                           xc->readMiscReg(AlphaISA::Fpcr_DepTag)));
             %(code)s;
             fesetround(FE_TONEAREST);
         }
diff --git a/arch/alpha/isa/main.isa b/arch/alpha/isa/main.isa
index b8d03c0be..ad9c2a55e 100644
--- a/arch/alpha/isa/main.isa
+++ b/arch/alpha/isa/main.isa
@@ -161,8 +161,8 @@ def operands {{
     'Fc': ('FloatReg', 'df', 'FC', 'IsFloating', 3),
     'Mem': ('Mem', 'uq', None, ('IsMemRef', 'IsLoad', 'IsStore'), 4),
     'NPC': ('NPC', 'uq', None, ( None, None, 'IsControl' ), 4),
-    'Runiq': ('ControlReg', 'uq', 'Uniq', None, 1),
-    'FPCR':  (' ControlReg', 'uq', 'Fpcr', None, 1),
+    'Runiq': ('ControlReg', 'uq', 'TheISA::Uniq_DepTag', None, 1),
+    'FPCR':  (' ControlReg', 'uq', 'TheISA::Fpcr_DepTag', None, 1),
     # The next two are hacks for non-full-system call-pal emulation
     'R0':  ('IntReg', 'uq', '0', None, 1),
     'R16': ('IntReg', 'uq', '16', None, 1),
@@ -194,6 +194,8 @@ output header {{
             FP_Base_DepTag = AlphaISA::FP_Base_DepTag,
             Fpcr_DepTag = AlphaISA::Fpcr_DepTag,
             Uniq_DepTag = AlphaISA::Uniq_DepTag,
+            Lock_Flag_DepTag = AlphaISA::Lock_Flag_DepTag,
+            Lock_Addr_DepTag = AlphaISA::Lock_Addr_DepTag,
             IPR_Base_DepTag = AlphaISA::IPR_Base_DepTag
         };