From: Giacomo Travaglini <giacomo.travaglini@arm.com>
Date: Thu, 25 Oct 2018 10:14:47 +0000 (+0100)
Subject: arch-arm: Move AArch32 IMPLEMENTATION DEFINED registers
X-Git-Tag: v19.0.0.0~1245
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=12eac0c88e21ddc76593079127a4507558cddc40;p=gem5.git

arch-arm: Move AArch32 IMPLEMENTATION DEFINED registers

Moving AArch32 instruction accessing IMPLEMENTATION DEFINED registers
from pseudo.[cc/hh] to misc.[cc/hh] in order to symmetrically match
with AArch64 implementation.

Change-Id: I27b0d65925d7965589b765269ae54129426e4c88
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/15735
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
---

diff --git a/src/arch/arm/insts/misc.cc b/src/arch/arm/insts/misc.cc
index ef78c236e..3f2986525 100644
--- a/src/arch/arm/insts/misc.cc
+++ b/src/arch/arm/insts/misc.cc
@@ -326,3 +326,72 @@ UnknownOp::generateDisassembly(Addr pc, const SymbolTable *symtab) const
 {
     return csprintf("%-10s (inst %#08x)", "unknown", machInst & mask(32));
 }
+
+McrMrcMiscInst::McrMrcMiscInst(const char *_mnemonic, ExtMachInst _machInst,
+                               uint64_t _iss, MiscRegIndex _miscReg)
+    : ArmStaticInst(_mnemonic, _machInst, No_OpClass)
+{
+    flags[IsNonSpeculative] = true;
+    iss = _iss;
+    miscReg = _miscReg;
+}
+
+Fault
+McrMrcMiscInst::execute(ExecContext *xc, Trace::InstRecord *traceData) const
+{
+    uint32_t cpsr = xc->readMiscReg(MISCREG_CPSR);
+    uint32_t hcr = xc->readMiscReg(MISCREG_HCR);
+    uint32_t scr = xc->readMiscReg(MISCREG_SCR);
+    uint32_t hdcr = xc->readMiscReg(MISCREG_HDCR);
+    uint32_t hstr = xc->readMiscReg(MISCREG_HSTR);
+    uint32_t hcptr = xc->readMiscReg(MISCREG_HCPTR);
+
+    bool hypTrap  = mcrMrc15TrapToHyp(miscReg, hcr, cpsr, scr, hdcr, hstr,
+                                      hcptr, iss);
+    if (hypTrap) {
+        return std::make_shared<HypervisorTrap>(machInst, iss,
+                                                EC_TRAPPED_CP15_MCR_MRC);
+    } else {
+        return NoFault;
+    }
+}
+
+std::string
+McrMrcMiscInst::generateDisassembly(Addr pc, const SymbolTable *symtab) const
+{
+    return csprintf("%-10s (pipe flush)", mnemonic);
+}
+
+McrMrcImplDefined::McrMrcImplDefined(const char *_mnemonic,
+                                     ExtMachInst _machInst, uint64_t _iss,
+                                     MiscRegIndex _miscReg)
+    : McrMrcMiscInst(_mnemonic, _machInst, _iss, _miscReg)
+{}
+
+Fault
+McrMrcImplDefined::execute(ExecContext *xc, Trace::InstRecord *traceData) const
+{
+    uint32_t cpsr = xc->readMiscReg(MISCREG_CPSR);
+    uint32_t hcr = xc->readMiscReg(MISCREG_HCR);
+    uint32_t scr = xc->readMiscReg(MISCREG_SCR);
+    uint32_t hdcr = xc->readMiscReg(MISCREG_HDCR);
+    uint32_t hstr = xc->readMiscReg(MISCREG_HSTR);
+    uint32_t hcptr = xc->readMiscReg(MISCREG_HCPTR);
+
+    bool hypTrap  = mcrMrc15TrapToHyp(miscReg, hcr, cpsr, scr, hdcr, hstr,
+                                      hcptr, iss);
+    if (hypTrap) {
+        return std::make_shared<HypervisorTrap>(machInst, iss,
+                                                EC_TRAPPED_CP15_MCR_MRC);
+    } else {
+        return std::make_shared<UndefinedInstruction>(machInst, false,
+                                                      mnemonic);
+    }
+}
+
+std::string
+McrMrcImplDefined::generateDisassembly(Addr pc,
+                                       const SymbolTable *symtab) const
+{
+    return csprintf("%-10s (implementation defined)", mnemonic);
+}
diff --git a/src/arch/arm/insts/misc.hh b/src/arch/arm/insts/misc.hh
index a036b2e11..e1f27433d 100644
--- a/src/arch/arm/insts/misc.hh
+++ b/src/arch/arm/insts/misc.hh
@@ -374,4 +374,46 @@ class UnknownOp : public PredOp
             Addr pc, const SymbolTable *symtab) const override;
 };
 
+/**
+ * Certain mrc/mcr instructions act as nops or flush the pipe based on what
+ * register the instruction is trying to access. This inst/class exists so that
+ * we can still check for hyp traps, as the normal nop instruction
+ * does not.
+ */
+class McrMrcMiscInst : public ArmStaticInst
+{
+  protected:
+    uint64_t iss;
+    MiscRegIndex miscReg;
+
+  public:
+    McrMrcMiscInst(const char *_mnemonic, ExtMachInst _machInst,
+                   uint64_t _iss, MiscRegIndex _miscReg);
+
+    Fault execute(ExecContext *xc,
+                  Trace::InstRecord *traceData) const override;
+
+    std::string generateDisassembly(
+            Addr pc, const SymbolTable *symtab) const override;
+
+};
+
+/**
+ * This class is also used for IMPLEMENTATION DEFINED registers, whose mcr/mrc
+ * behaviour is trappable even for unimplemented registers.
+ */
+class McrMrcImplDefined : public McrMrcMiscInst
+{
+  public:
+    McrMrcImplDefined(const char *_mnemonic, ExtMachInst _machInst,
+                      uint64_t _iss, MiscRegIndex _miscReg);
+
+    Fault execute(ExecContext *xc,
+                  Trace::InstRecord *traceData) const override;
+
+    std::string generateDisassembly(
+            Addr pc, const SymbolTable *symtab) const override;
+
+};
+
 #endif
diff --git a/src/arch/arm/insts/pseudo.cc b/src/arch/arm/insts/pseudo.cc
index 2e8c3f10d..83a7a5dcc 100644
--- a/src/arch/arm/insts/pseudo.cc
+++ b/src/arch/arm/insts/pseudo.cc
@@ -181,75 +181,6 @@ WarnUnimplemented::generateDisassembly(Addr pc, const SymbolTable *symtab) const
                     fullMnemonic.size() ? fullMnemonic.c_str() : mnemonic);
 }
 
-McrMrcMiscInst::McrMrcMiscInst(const char *_mnemonic, ExtMachInst _machInst,
-                               uint64_t _iss, MiscRegIndex _miscReg)
-    : ArmStaticInst(_mnemonic, _machInst, No_OpClass)
-{
-    flags[IsNonSpeculative] = true;
-    iss = _iss;
-    miscReg = _miscReg;
-}
-
-Fault
-McrMrcMiscInst::execute(ExecContext *xc, Trace::InstRecord *traceData) const
-{
-    uint32_t cpsr = xc->readMiscReg(MISCREG_CPSR);
-    uint32_t hcr = xc->readMiscReg(MISCREG_HCR);
-    uint32_t scr = xc->readMiscReg(MISCREG_SCR);
-    uint32_t hdcr = xc->readMiscReg(MISCREG_HDCR);
-    uint32_t hstr = xc->readMiscReg(MISCREG_HSTR);
-    uint32_t hcptr = xc->readMiscReg(MISCREG_HCPTR);
-
-    bool hypTrap  = mcrMrc15TrapToHyp(miscReg, hcr, cpsr, scr, hdcr, hstr,
-                                      hcptr, iss);
-    if (hypTrap) {
-        return std::make_shared<HypervisorTrap>(machInst, iss,
-                                                EC_TRAPPED_CP15_MCR_MRC);
-    } else {
-        return NoFault;
-    }
-}
-
-std::string
-McrMrcMiscInst::generateDisassembly(Addr pc, const SymbolTable *symtab) const
-{
-    return csprintf("%-10s (pipe flush)", mnemonic);
-}
-
-McrMrcImplDefined::McrMrcImplDefined(const char *_mnemonic,
-                                     ExtMachInst _machInst, uint64_t _iss,
-                                     MiscRegIndex _miscReg)
-    : McrMrcMiscInst(_mnemonic, _machInst, _iss, _miscReg)
-{}
-
-Fault
-McrMrcImplDefined::execute(ExecContext *xc, Trace::InstRecord *traceData) const
-{
-    uint32_t cpsr = xc->readMiscReg(MISCREG_CPSR);
-    uint32_t hcr = xc->readMiscReg(MISCREG_HCR);
-    uint32_t scr = xc->readMiscReg(MISCREG_SCR);
-    uint32_t hdcr = xc->readMiscReg(MISCREG_HDCR);
-    uint32_t hstr = xc->readMiscReg(MISCREG_HSTR);
-    uint32_t hcptr = xc->readMiscReg(MISCREG_HCPTR);
-
-    bool hypTrap  = mcrMrc15TrapToHyp(miscReg, hcr, cpsr, scr, hdcr, hstr,
-                                      hcptr, iss);
-    if (hypTrap) {
-        return std::make_shared<HypervisorTrap>(machInst, iss,
-                                                EC_TRAPPED_CP15_MCR_MRC);
-    } else {
-        return std::make_shared<UndefinedInstruction>(machInst, false,
-                                                      mnemonic);
-    }
-}
-
-std::string
-McrMrcImplDefined::generateDisassembly(Addr pc,
-                                       const SymbolTable *symtab) const
-{
-    return csprintf("%-10s (implementation defined)", mnemonic);
-}
-
 IllegalExecInst::IllegalExecInst(ExtMachInst _machInst)
     : ArmStaticInst("Illegal Execution", _machInst, No_OpClass)
 {}
diff --git a/src/arch/arm/insts/pseudo.hh b/src/arch/arm/insts/pseudo.hh
index 9065c6281..c7ed08d30 100644
--- a/src/arch/arm/insts/pseudo.hh
+++ b/src/arch/arm/insts/pseudo.hh
@@ -119,48 +119,6 @@ class WarnUnimplemented : public ArmStaticInst
             Addr pc, const SymbolTable *symtab) const override;
 };
 
-/**
- * Certain mrc/mcr instructions act as nops or flush the pipe based on what
- * register the instruction is trying to access. This inst/class exists so that
- * we can still check for hyp traps, as the normal nop instruction
- * does not.
- */
-class McrMrcMiscInst : public ArmStaticInst
-{
-  protected:
-    uint64_t iss;
-    MiscRegIndex miscReg;
-
-  public:
-    McrMrcMiscInst(const char *_mnemonic, ExtMachInst _machInst,
-                   uint64_t _iss, MiscRegIndex _miscReg);
-
-    Fault execute(ExecContext *xc,
-                  Trace::InstRecord *traceData) const override;
-
-    std::string generateDisassembly(
-            Addr pc, const SymbolTable *symtab) const override;
-
-};
-
-/**
- * This class is also used for IMPLEMENTATION DEFINED registers, whose mcr/mrc
- * behaviour is trappable even for unimplemented registers.
- */
-class McrMrcImplDefined : public McrMrcMiscInst
-{
-  public:
-    McrMrcImplDefined(const char *_mnemonic, ExtMachInst _machInst,
-                      uint64_t _iss, MiscRegIndex _miscReg);
-
-    Fault execute(ExecContext *xc,
-                  Trace::InstRecord *traceData) const override;
-
-    std::string generateDisassembly(
-            Addr pc, const SymbolTable *symtab) const override;
-
-};
-
 /**
  * This class is modelling instructions which are not going to be
  * executed since they are flagged as Illegal Execution Instructions