[Qemu-devel] [patch] implement alpha getxuid and getxgid syscalls

[Qemu-devel] [patch] implement alpha getxuid and getxgid syscalls

[Vince Weaver]

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());

Re: [Qemu-devel] [patch] implement alpha getxuid and getxgid syscalls

[Aurelien Jarno]

On Wed, Nov 12, 2008 at 04:39:14PM -0500, Vince Weaver wrote:
> 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.

Applied, thanks.

> 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());
> 
> 
> 
> 

-- 
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