Fixes to SPARC syscall emulation mode.

arch/sparc/isa/base.isa:
    Added a set of abbreviations for the different condition tests.
arch/sparc/isa/decoder.isa:
    Fixes and additions to get syscall emulation closer to working.
arch/sparc/isa/formats/branch.isa:
    Fixed branches so that the immediate version actually uses the immediate value
arch/sparc/isa/formats/integerop.isa:
    Compute the condition codes -before- writing to the state of the machine.
arch/sparc/isa/formats/mem.isa:
    An attempt to fix up the output of the disassembly of loads and stores.
arch/sparc/isa/formats/trap.isa:
    Added code to disassemble a trap instruction. This probably needs to be fixed up so there are immediate and register versions.
arch/sparc/isa/operands.isa:
    Added an R1 operand, and fixed up the numbering
arch/sparc/isa_traits.hh:
    SyscallNumReg is no longer needed, the max number of sources and destinations are fixed up, and the syscall return uses xcc instead of icc.
arch/sparc/linux/process.cc:
arch/sparc/linux/process.hh:
    Added a getresuidFunc syscall implementation. This isn't actually used, but I thought it was and will leave it in.
arch/sparc/process.cc:
arch/sparc/process.hh:
    Fixed up how the initial stack frame is set up.
arch/sparc/regfile.hh:
    Changed the number of windows from 6 to 32 so we don't have to worry about spill and fill traps for now, and commented out the register file setting itself up.
cpu/cpu_exec_context.hh:
cpu/exec_context.hh:
cpu/simple/cpu.hh:
sim/process.cc:
sim/process.hh:
    Changed the syscall mechanism to pass down the syscall number directly.

--HG--
extra : convert_revision : 15723b949a0ddb3d24e68c079343b4dba2439f43

cpu/cpu_exec_context.hh

@@ -518,9 +518,9 @@ class CPUExecContext
         TheISA::setSyscallReturn(return_value, &regs);
     }
 
-    void syscall()
+    void syscall(int64_t callnum)
     {
-        process->syscall(proxy);
+        process->syscall(callnum, proxy);
     }
 
     Counter readFuncExeInst() { return func_exe_inst; }

cpu/exec_context.hh

@@ -234,7 +234,7 @@ class ExecContext
 
     virtual void setSyscallReturn(SyscallReturn return_value) = 0;
 
-    virtual void syscall() = 0;
+    virtual void syscall(int64_t callnum) = 0;
 
     // Same with st cond failures.
     virtual Counter readFuncExeInst() = 0;
@@ -432,7 +432,7 @@ class ProxyExecContext : public ExecContext
     void setSyscallReturn(SyscallReturn return_value)
     { actualXC->setSyscallReturn(return_value); }
 
-    void syscall() { actualXC->syscall(); }
+    void syscall(int64_t callnum) { actualXC->syscall(callnum); }
 
     Counter readFuncExeInst() { return actualXC->readFuncExeInst(); }
 

cpu/simple/cpu.hh

@@ -414,7 +414,7 @@ class SimpleCPU : public BaseCPU
     void ev5_trap(Fault fault) { fault->invoke(xcProxy); }
     bool simPalCheck(int palFunc) { return cpuXC->simPalCheck(palFunc); }
 #else
-    void syscall() { cpuXC->syscall(); }
+    void syscall(int64_t callnum) { cpuXC->syscall(callnum); }
 #endif
 
     bool misspeculating() { return cpuXC->misspeculating(); }