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

2 files changed, 40 insertions, 2 deletions

diff --git a/arch/sparc/linux/process.cc b/arch/sparc/linux/process.cc
index c7e5f79ca..ca85a6d2d 100644
--- a/arch/sparc/linux/process.cc
+++ b/arch/sparc/linux/process.cc
@@ -26,8 +26,9 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "arch/sparc/linux/process.hh"
 #include "arch/sparc/isa_traits.hh"
+#include "arch/sparc/linux/process.hh"
+#include "arch/sparc/regfile.hh"
 
 #include "base/trace.hh"
 #include "cpu/exec_context.hh"
@@ -54,6 +55,40 @@ unameFunc(SyscallDesc *desc, int callnum, Process *process,
     strcpy(name->machine, "sparc");
 
     name.copyOut(xc->getMemPort());
+
+    return 0;
+}
+
+
+SyscallReturn SparcISA::getresuidFunc(SyscallDesc *desc, int num,
+                                         Process *p, ExecContext *xc)
+{
+    const IntReg id = htog(100);
+    Addr ruid = xc->getSyscallArg(0);
+    Addr euid = xc->getSyscallArg(1);
+    Addr suid = xc->getSyscallArg(2);
+    //Handle the EFAULT case
+    //Set the ruid
+    if(ruid)
+    {
+        BufferArg ruidBuff(ruid, sizeof(IntReg));
+        memcpy(ruidBuff.bufferPtr(), &id, sizeof(IntReg));
+        ruidBuff.copyOut(xc->getMemPort());
+    }
+    //Set the euid
+    if(euid)
+    {
+        BufferArg euidBuff(euid, sizeof(IntReg));
+        memcpy(euidBuff.bufferPtr(), &id, sizeof(IntReg));
+        euidBuff.copyOut(xc->getMemPort());
+    }
+    //Set the suid
+    if(suid)
+    {
+        BufferArg suidBuff(suid, sizeof(IntReg));
+        memcpy(suidBuff.bufferPtr(), &id, sizeof(IntReg));
+        suidBuff.copyOut(xc->getMemPort());
+    }
     return 0;
 }
 
@@ -167,7 +202,7 @@ SyscallDesc SparcLinuxProcess::syscallDescs[] = {
     /* 106 */ SyscallDesc("rt_sigqueueinfo", unimplementedFunc),
     /* 107 */ SyscallDesc("rt_sigsuspend", unimplementedFunc),
     /* 108 */ SyscallDesc("setresuid", unimplementedFunc),
-    /* 109 */ SyscallDesc("getresuid", unimplementedFunc),
+    /* 109 */ SyscallDesc("getresuid", getresuidFunc),
     /* 110 */ SyscallDesc("setresgid", unimplementedFunc),
     /* 111 */ SyscallDesc("getresgid", unimplementedFunc),
     /* 112 */ SyscallDesc("setregid32", unimplementedFunc),
diff --git a/arch/sparc/linux/process.hh b/arch/sparc/linux/process.hh
index 1565ab549..38ddd68b9 100644
--- a/arch/sparc/linux/process.hh
+++ b/arch/sparc/linux/process.hh
@@ -57,5 +57,8 @@ class SparcLinuxProcess : public SparcLiveProcess
     const int Num_Syscall_Descs;
 };
 
+SyscallReturn getresuidFunc(SyscallDesc *desc, int num,
+                                 Process *p, ExecContext *xc);
+
 } // namespace SparcISA
 #endif // __ALPHA_LINUX_PROCESS_HH__