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authorGabe Black <gblack@eecs.umich.edu>2007-10-19 15:10:23 -0700
committerGabe Black <gblack@eecs.umich.edu>2007-10-19 15:10:23 -0700
commitf69a463b4b6c247570374edd24b10be5b243d6a6 (patch)
treea3d96415fc1f929f8b8199edf70b534c8fecb768 /src/arch/x86
parent7f373225328afdf17875f73ee039a666eaafef0b (diff)
downloadgem5-f69a463b4b6c247570374edd24b10be5b243d6a6.tar.xz
X86: Implement a "halt" microop.
--HG-- extra : convert_revision : 53a846a157e4dce42343b81901df1207738f62cd
Diffstat (limited to 'src/arch/x86')
-rw-r--r--src/arch/x86/isa/microops/specop.isa39
1 files changed, 39 insertions, 0 deletions
diff --git a/src/arch/x86/isa/microops/specop.isa b/src/arch/x86/isa/microops/specop.isa
index ca4a6dc57..dfc7f3e8b 100644
--- a/src/arch/x86/isa/microops/specop.isa
+++ b/src/arch/x86/isa/microops/specop.isa
@@ -77,6 +77,25 @@ output header {{
std::string generateDisassembly(Addr pc,
const SymbolTable *symtab) const;
};
+
+ class MicroHalt : public X86ISA::X86MicroopBase
+ {
+ public:
+ MicroHalt(ExtMachInst _machInst, const char * instMnem,
+ bool isMicro, bool isDelayed, bool isFirst, bool isLast) :
+ X86MicroopBase(_machInst, "halt", instMnem,
+ isMicro, isDelayed, isFirst, isLast, No_OpClass)
+ {
+ }
+
+ MicroHalt(ExtMachInst _machInst, const char * instMnem) :
+ X86MicroopBase(_machInst, "halt", instMnem,
+ false, false, false, false, No_OpClass)
+ {
+ }
+
+ %(BasicExecDeclare)s
+ };
}};
def template MicroFaultDeclare {{
@@ -111,6 +130,16 @@ def template MicroFaultExecute {{
}
}};
+output exec {{
+ Fault
+ MicroHalt::execute(%(CPU_exec_context)s *xc,
+ Trace::InstRecord * traceData) const
+ {
+ xc->suspend();
+ return NoFault;
+ }
+}};
+
output decoder {{
inline MicroFaultBase::MicroFaultBase(
ExtMachInst machInst, const char * instMnem,
@@ -209,4 +238,14 @@ let {{
header_output += MicroFaultDeclare.subst(iop)
decoder_output += MicroFaultConstructor.subst(iop)
microopClasses["fault"] = Fault
+
+ class Halt(X86Microop):
+ def __init__(self):
+ pass
+
+ def getAllocator(self, *microFlags):
+ return "new MicroHalt(machInst, mnemonic %(flags)s)" % \
+ self.microFlagsText(microFlags)
+
+ microopClasses["halt"] = Halt
}};