syscall: Resolve conflicts between m5threads and Gabe's recent SE changes.

src/arch/alpha/isa_traits.hh

@@ -155,6 +155,7 @@ const int FramePointerReg = 15;
 const int SyscallNumReg = 0;
 const int FirstArgumentReg = 16;
 const int SyscallPseudoReturnReg = 20;
+const int SyscallSuccessReg = 19;
 
 const int LogVMPageSize = 13;       // 8K bytes
 const int VMPageSize = (1 << LogVMPageSize);

src/arch/alpha/process.cc

@@ -42,8 +42,6 @@
 using namespace AlphaISA;
 using namespace std;
 
-static const int SyscallSuccessReg = 19;
-
 AlphaLiveProcess::AlphaLiveProcess(LiveProcessParams *params,
                                    ObjectFile *objFile)
     : LiveProcess(params, objFile)

src/arch/mips/isa_traits.hh

@@ -188,6 +188,10 @@ namespace MipsISA
     // semantically meaningful register indices
     const int ZeroReg = 0;
     const int AssemblerReg = 1;
+    const int SyscallSuccessReg = 7;
+    const int FirstArgumentReg = 4;
+    const int ReturnValueReg = 2;
+
     const int KernelReg0 = 26;
     const int KernelReg1 = 27;
     const int GlobalPointerReg = 28;

src/arch/mips/process.cc

@@ -40,10 +40,6 @@
 using namespace std;
 using namespace MipsISA;
 
-static const int SyscallSuccessReg = 7;
-static const int FirstArgumentReg = 4;
-static const int ReturnValueReg = 2;
-
 MipsLiveProcess::MipsLiveProcess(LiveProcessParams * params,
         ObjectFile *objFile)
     : LiveProcess(params, objFile)

src/arch/sparc/isa_traits.hh

@@ -69,6 +69,7 @@ namespace SparcISA
     const int ZeroReg = 0;      // architecturally meaningful
     // the rest of these depend on the ABI
     const int ReturnAddressReg = 31; // post call, precall is 15
+    const int ReturnValueReg = 8;  // Post return, 24 is pre-return.
     const int StackPointerReg = 14;
     const int FramePointerReg = 30;
 

src/arch/sparc/process.cc

@@ -47,7 +47,6 @@ using namespace std;
 using namespace SparcISA;
 
 static const int FirstArgumentReg = 8;
-static const int ReturnValueReg = 8;
 
 
 SparcLiveProcess::SparcLiveProcess(LiveProcessParams * params,

src/arch/x86/isa_traits.hh

@@ -106,6 +106,7 @@ namespace X86ISA
     const int StackPointerReg = INTREG_RSP;
     //X86 doesn't seem to have a link register
     const int ReturnAddressReg = 0;
+    const int ReturnValueReg = INTREG_RAX;
     const int FramePointerReg = INTREG_RBP;
 
     // Some OS syscalls use a second register (rdx) to return a second

src/arch/x86/process.cc

@@ -104,7 +104,6 @@
 using namespace std;
 using namespace X86ISA;
 
-static const int ReturnValueReg = INTREG_RAX;
 static const int ArgumentReg[] = {
     INTREG_RDI,
     INTREG_RSI,

src/sim/syscall_emul.cc

@@ -659,12 +659,12 @@ cloneFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
            ThreadContext *tc)
 {
     DPRINTF(SyscallVerbose, "In sys_clone:\n");
-    DPRINTF(SyscallVerbose, " Flags=%llx\n", tc->getSyscallArg(0));
-    DPRINTF(SyscallVerbose, " Child stack=%llx\n", tc->getSyscallArg(1));
+    DPRINTF(SyscallVerbose, " Flags=%llx\n", process->getSyscallArg(tc, 0));
+    DPRINTF(SyscallVerbose, " Child stack=%llx\n", process->getSyscallArg(tc, 1));
 
 
-    if (tc->getSyscallArg(0) != 0x10f00) {
-        warn("This sys_clone implementation assumes flags CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD (0x10f00), and may not work correctly with given flags 0x%llx\n", tc->getSyscallArg(0));
+    if (process->getSyscallArg(tc, 0) != 0x10f00) {
+        warn("This sys_clone implementation assumes flags CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD (0x10f00), and may not work correctly with given flags 0x%llx\n", process->getSyscallArg(tc, 0));
     }
 
     ThreadContext* ctc; //child thread context
@@ -697,14 +697,14 @@ cloneFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
         #endif
 
         //Set up stack register
-        ctc->setIntReg(TheISA::StackPointerReg, tc->getSyscallArg(1));
+        ctc->setIntReg(TheISA::StackPointerReg, process->getSyscallArg(tc, 1));
 
         //Set up syscall return values in parent and child
         ctc->setIntReg(ReturnValueReg, 0); //return value, child
 
         //Alpha needs SyscallSuccessReg=0 in child
         #if THE_ISA == ALPHA_ISA
-            ctc->setIntReg(SyscallSuccessReg, 0);
+            ctc->setIntReg(TheISA::SyscallSuccessReg, 0);
         #endif
 
         //In SPARC/Linux, clone returns 0 on pseudo-return register if parent, non-zero if child