From: palves <palves>
Date: Thu, 26 May 2011 13:57:43 +0000 (+0000)
Subject: 	* alpha-tdep.c (alpha_cannot_fetch_register): Don't return true
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=f45a84c785e7b9d2fa584a967ff1803e955b2a33;p=pf3gnuchains%2Fpf3gnuchains4x.git

	* alpha-tdep.c (alpha_cannot_fetch_register): Don't return true
	for ALPHA_ZERO_REGNUM.
	(alpha_supply_int_regs): Explicitly supply zero as the value for
	ALPHA_ZERO_REGNUM in the register cache.
	* alpha-nat.c (fetch_osf_core_registers): Ditto.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 678ed3b5a8..76c56ea73c 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,11 @@
+2011-05-26  Pedro Alves  <pedro@codesourcery.com>
+
+	* alpha-tdep.c (alpha_cannot_fetch_register): Don't return true
+	for ALPHA_ZERO_REGNUM.
+	(alpha_supply_int_regs): Explicitly supply zero as the value for
+	ALPHA_ZERO_REGNUM in the register cache.
+	* alpha-nat.c (fetch_osf_core_registers): Ditto.
+
 2011-05-26  Yao Qi  <yao@codesourcery.com>
 
 	* gdb/gdb_thread_db.h: Remove HAVE_UINTPTR_T.
diff --git a/gdb/alpha-nat.c b/gdb/alpha-nat.c
index 1a55ea9dac..f548359c69 100644
--- a/gdb/alpha-nat.c
+++ b/gdb/alpha-nat.c
@@ -101,6 +101,15 @@ fetch_osf_core_registers (struct regcache *regcache,
 	  regcache_raw_supply (regcache, regno, NULL);
 	  continue;
 	}
+
+      if (regno == ALPHA_ZERO_REGNUM)
+	{
+	  const gdb_byte zero[8] = { 0 };
+
+	  regcache_raw_supply (regcache, regno, zero);
+	  continue;
+	}
+
       addr = 8 * core_reg_mapping[regno];
       if (addr < 0 || addr >= core_reg_size)
 	{
diff --git a/gdb/alpha-tdep.c b/gdb/alpha-tdep.c
index 10e753b294..77782e8809 100644
--- a/gdb/alpha-tdep.c
+++ b/gdb/alpha-tdep.c
@@ -111,8 +111,7 @@ alpha_register_name (struct gdbarch *gdbarch, int regno)
 static int
 alpha_cannot_fetch_register (struct gdbarch *gdbarch, int regno)
 {
-  return (regno == ALPHA_ZERO_REGNUM
-          || strlen (alpha_register_name (gdbarch, regno)) == 0);
+  return (strlen (alpha_register_name (gdbarch, regno)) == 0);
 }
 
 static int
@@ -1424,7 +1423,11 @@ alpha_supply_int_regs (struct regcache *regcache, int regno,
       regcache_raw_supply (regcache, i, regs + i * 8);
 
   if (regno == ALPHA_ZERO_REGNUM || regno == -1)
-    regcache_raw_supply (regcache, ALPHA_ZERO_REGNUM, NULL);
+    {
+      const gdb_byte zero[8] = { 0 };
+
+      regcache_raw_supply (regcache, ALPHA_ZERO_REGNUM, zero);
+    }
 
   if (regno == ALPHA_PC_REGNUM || regno == -1)
     regcache_raw_supply (regcache, ALPHA_PC_REGNUM, pc);