move sparc-sol-thread.c back into sol-thread.c.

The routines in sparc-sol-thread used to be SPARC-specific (and
documented as such in the ptrace man page), and therefore hosting them
in a sparc-specific file made sense.  However, newer versions of
Solaris now use those callbacks (Solaris 10 Update 10, apparently),
and thus the note about these callbacks being specific to SPARC
was removed.

So this patch deletes sparc-sol-thread.c and moves the code back
inside sol-thread.c.

gdb/ChangeLog:

        PR tdep/15420:
        * sol-thread.c (ps_lgetxregsize, ps_lgetxregs, ps_lsetxregs):
        New functions, directly copied from sparc-sol-thread.c.
        * sparc-sol-thread.c: Delete.
        * configure.ac: Remove code handling sparc-solaris-thread.c.
        * configure: Regenerate.

1 files changed, 24 insertions, 0 deletions

diff --git a/gdb/sol-thread.c b/gdb/sol-thread.c
index cccb935..f1b29a0 100644
--- a/gdb/sol-thread.c
+++ b/gdb/sol-thread.c
@@ -907,6 +907,30 @@ ps_plog (const char *fmt, ...)
   vfprintf_filtered (gdb_stderr, fmt, args);
 }
 
+/* Get size of extra register set.  Currently a noop.  */
+
+ps_err_e
+ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize)
+{
+  return PS_OK;
+}
+
+/* Get extra register set.  Currently a noop.  */
+
+ps_err_e
+ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset)
+{
+  return PS_OK;
+}
+
+/* Set extra register set.  Currently a noop.  */
+
+ps_err_e
+ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset)
+{
+  return PS_OK;
+}
+
 /* Get floating-point registers for LWP.  */
 
 ps_err_e