From: Mark Kettenis <kettenis@gnu.org>
Date: Sun, 17 Aug 2003 23:16:44 +0000 (+0000)
Subject: * i386-tdep.c (i386_analyze_register_saves): Handle register saves
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=99ab4326f1095f50d2991b6f633337e7d92e1134;p=binutils-gdb.git

* i386-tdep.c (i386_analyze_register_saves): Handle register saves
at the start of a frameless function.  This probably fixes PR
backtrace/1338.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index f8d0e2c787a..4ac481d4136 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2003-08-18  Mark Kettenis  <kettenis@gnu.org>
+
+	* i386-tdep.c (i386_analyze_register_saves): Handle register saves
+	at the start of a frameless function.  This probably fixes PR
+	backtrace/1338.
+
 2003-08-17  Michael Chastain  <mec@shout.net>
 
 	* symfile.c (find_sym_fns): Remove special case for apollo target.
diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c
index 2c7afca7a33..9aa20d6e1b8 100644
--- a/gdb/i386-tdep.c
+++ b/gdb/i386-tdep.c
@@ -571,23 +571,22 @@ static CORE_ADDR
 i386_analyze_register_saves (CORE_ADDR pc, CORE_ADDR current_pc,
 			     struct i386_frame_cache *cache)
 {
-  if (cache->locals >= 0)
-    {
-      CORE_ADDR offset;
-      unsigned char op;
-      int i;
+  CORE_ADDR offset = 0;
+  unsigned char op;
+  int i;
 
-      offset = - 4 - cache->locals;
-      for (i = 0; i < 8 && pc < current_pc; i++)
-	{
-	  op = read_memory_unsigned_integer (pc, 1);
-	  if (op < 0x50 || op > 0x57)
-	    break;
+  if (cache->locals > 0)
+    offset -= cache->locals;
+  for (i = 0; i < 8 && pc < current_pc; i++)
+    {
+      op = read_memory_unsigned_integer (pc, 1);
+      if (op < 0x50 || op > 0x57)
+	break;
 
-	  cache->saved_regs[op - 0x50] = offset;
-	  offset -= 4;
-	  pc++;
-	}
+      offset -= 4;
+      cache->saved_regs[op - 0x50] = offset;
+      cache->sp_offset += 4;
+      pc++;
     }
 
   return pc;