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Date: Wed, 12 Nov 2008 16:39:14 -0500 (EST)
From: Vince Weaver <vince@csl.cornell.edu>
Message-ID: <Pine.LNX.4.44.0811121635310.12324-100000@cacao.csl.cornell.edu>
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Subject: [Qemu-devel] [patch] implement alpha getxuid and getxgid syscalls
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To: qemu-devel@nongnu.org

Hello

this patch implemented the setxuid and setxgid syscalls for Alpha.
These syscalls return two values, both uid/euid and gid/egid.
In addition to returning the first value in $v0, the additional
value is returned in the $a4 register.

The syscalls are used instead of the separate syscalls for those values
used on other architectures (this is probably because Alpha Linux started
out syscall compatible with DEC/OSF/Tru64).

With this patch, the perlbmk benchmarks from Spec2000 run properly.

Vince

Index: linux-user/syscall.c
===================================================================
--- linux-user/syscall.c	(revision 5663)
+++ linux-user/syscall.c	(working copy)
@@ -5529,6 +5529,30 @@
         ret = get_errno(getuid());
         break;
 #endif
+
+#if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
+   /* Alpha specific */
+    case TARGET_NR_getxuid:
+	 {
+	    uid_t euid;
+	    euid=geteuid();
+	    ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid;
+	 }
+        ret = get_errno(getuid());
+        break;
+#endif
+#if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
+   /* Alpha specific */
+    case TARGET_NR_getxgid:
+	 {
+	    uid_t egid;
+	    egid=getegid();
+	    ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid;
+	 }
+        ret = get_errno(getgid());
+        break;
+#endif
+
 #ifdef TARGET_NR_getgid32
     case TARGET_NR_getgid32:
         ret = get_errno(getgid());