From: cagney <cagney>
Date: Tue, 13 Aug 2002 23:06:40 +0000 (+0000)
Subject: 2002-08-13  Andrew Cagney  <cagney@redhat.com>
X-Git-Tag: pre-no-this~827
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=c10bf7466dc6cc05f2274068761a0769cfd836fe;p=pf3gnuchains%2Fpf3gnuchains4x.git

2002-08-13  Andrew Cagney  <cagney@redhat.com>

* regcache.c (init_regcache_descr): Overallocate the
raw_register_valid_p array including space for NUM_PSEUDO_REGS.
(registers_changed): Replace NUM_REGS+NUM_PSEUDO_REGS with
num_raw_registers.
(set_register_cached): Add range checking assertions.  Use
current_regcache.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 71eae60d0d..a34f45aa5c 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,12 @@
+2002-08-13  Andrew Cagney  <cagney@redhat.com>
+
+	* regcache.c (init_regcache_descr): Overallocate the
+	raw_register_valid_p array including space for NUM_PSEUDO_REGS.
+	(registers_changed): Replace NUM_REGS+NUM_PSEUDO_REGS with
+	nr_raw_registers.
+	(set_register_cached): Add range checking assertions.  Use
+	current_regcache.
+
 2002-08-13  Mark Kettenis  <kettenis@elgar.kettenis.dyndns.org>
 
 	* i386-tdep.c (i386_stab_reg_to_regnum): Return correct register
diff --git a/gdb/regcache.c b/gdb/regcache.c
index 85d96c9e4a..e46f082c84 100644
--- a/gdb/regcache.c
+++ b/gdb/regcache.c
@@ -161,7 +161,12 @@ init_regcache_descr (struct gdbarch *gdbarch)
   /* Construct a strictly RAW register cache.  Don't allow pseudo's
      into the register cache.  */
   descr->nr_raw_registers = NUM_REGS;
-  descr->sizeof_raw_register_valid_p = NUM_REGS;
+
+  /* FIXME: cagney/2002-08-13: Overallocate the register_valid_p
+     array.  This pretects GDB from erant code that accesses elements
+     of the global register_valid_p[] array in the range [NUM_REGS
+     .. NUM_REGS + NUM_PSEUDO_REGS).  */
+  descr->sizeof_raw_register_valid_p = NUM_REGS + NUM_PSEUDO_REGS;
 
   /* Lay out the register cache.  The pseud-registers are included in
      the layout even though their value isn't stored in the register
@@ -431,7 +436,9 @@ register_cached (int regnum)
 void
 set_register_cached (int regnum, int state)
 {
-  register_valid[regnum] = state;
+  gdb_assert (regnum >= 0);
+  gdb_assert (regnum < current_regcache->descr->nr_raw_registers);
+  current_regcache->raw_register_valid_p[regnum] = state;
 }
 
 /* REGISTER_CHANGED
@@ -485,7 +492,7 @@ registers_changed (void)
      gdb gives control to the user (ie watchpoints).  */
   alloca (0);
 
-  for (i = 0; i < NUM_REGS + NUM_PSEUDO_REGS; i++)
+  for (i = 0; i < current_regcache->descr->nr_raw_registers; i++)
     set_register_cached (i, 0);
 
   if (registers_changed_hook)