[PATCH/arm-linux] Fix thread debugging on ARM/Linux

[Daniel Jacobowitz <drow@mvista.com>]

I'm going to commit the attached as obvious in a day or two, unless someone
objects.  fill_gregset () shouldn't just fill in the registers we already
have; it should fetch registers we don't have, and fill in all registers,
like it does on every other target.  With this, thread debugging appears to
work on my ARM/Linux target (although the testsuite results are really quite
awful).

-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer

2001-10-24  Daniel Jacobowitz  <drow@mvista.com>

	* arm-linux-nat.c (fill_gregset): Do not check register_valid[].
	(fill_fpregset): Likewise.

--- gdb-5.0.20010802/gdb/arm-linux-nat.c.orig	Wed Oct 24 12:05:51 2001
+++ gdb-5.0.20010802/gdb/arm-linux-nat.c	Wed Oct 24 12:11:41 2001
@@ -579,26 +579,18 @@ fill_gregset (gdb_gregset_t *gregsetp, i
     {
       int regnum;
       for (regnum = A1_REGNUM; regnum <= PC_REGNUM; regnum++) 
-        if (register_valid[regnum])
-	  read_register_gen (regnum, (char *) &(*gregsetp)[regnum]);
+	read_register_gen (regnum, (char *) &(*gregsetp)[regnum]);
     }
   else if (regno >= A1_REGNUM && regno <= PC_REGNUM)
-    {
-      if (register_valid[regno])
-	read_register_gen (regno, (char *) &(*gregsetp)[regno]);
-    }
+    read_register_gen (regno, (char *) &(*gregsetp)[regno]);
 
   if (PS_REGNUM == regno || -1 == regno)
     {
-      if (register_valid[regno] || -1 == regno)
-        {
-          if (arm_apcs_32)
-	    read_register_gen (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]);
-	  else
-	    read_register_gen (PC_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]);
-	}
+      if (arm_apcs_32)
+	read_register_gen (PS_REGNUM, (char *) &(*gregsetp)[CPSR_REGNUM]);
+      else
+	read_register_gen (PC_REGNUM, (char *) &(*gregsetp)[PC_REGNUM]);
     }
-        
 }
 
 /* Fill GDB's register array with the general-purpose register values
@@ -643,9 +635,8 @@ fill_fpregset (gdb_fpregset_t *fpregsetp
     }
 
   /* Store fpsr.  */
-  if (register_valid[FPS_REGNUM])
-    if (FPS_REGNUM == regno || -1 == regno)
-      read_register_gen (FPS_REGNUM, (char *) &fp->fpsr);
+  if (FPS_REGNUM == regno || -1 == regno)
+    read_register_gen (FPS_REGNUM, (char *) &fp->fpsr);
 }
 
 /* Fill GDB's register array with the floating-point register values