Re: [patch] Remove all current_gdbarch's in mn10300

[Markus Deuling <deuling at de dot ibm dot com>]

Ulrich Weigand schrieb:
> Markus Deuling wrote:
>
> > @@ -604,7 +606,7 @@ mn10300_analyze_prologue (struct frame_i
>
> > -  if (AM33_MODE == 2)
> > +  if (AM33_MODE (get_frame_arch (fi))== 2)
>
> This is incorrect, as mn10300_analyze_prologue may be called 
> with a NULL fi value (from mn10300_skip_prologue).  I guess
> the right way would be to allow the caller to pass an explicit
> gdbarch ...

Hi Uli,

thank you for review. I attached a new version of the patch. Tested by building mn10300 target
(--enable-targets=all). Ok to commit ?


ChangeLog:

	* mn10300-tdep.h (AM33_MODE): Add gdbarch as parameter.
	* mn10300-tdep.c (set_reg_offsets, mn10300_analyze_prologue): Use
	get_frame_arch to get at the current_architecture. Update AM33_MODE
	call.
	(mn10300_analyze_prologue): Add gdbarch as parameter. Update caller.
	(mn10300_frame_unwind_cache): Use get_frame_arch to get at the current
	architecture.
	(set_reg_offsets, mn10300_analyze_prologue): Fix indentation.



--
 Markus Deuling
 GNU Toolchain for Linux on Cell BE
 deuling@de.ibm.com

diff -urpN src/gdb/mn10300-tdep.c dev/gdb/mn10300-tdep.c
--- src/gdb/mn10300-tdep.c	2008-01-11 15:42:53.000000000 +0100
+++ dev/gdb/mn10300-tdep.c	2008-01-15 06:02:31.000000000 +0100
@@ -307,6 +307,7 @@ set_reg_offsets (struct frame_info *fi, 
 		  int stack_extra_size,
 		  int frame_in_fp)
 {
+  struct gdbarch *gdbarch;
   struct trad_frame_cache *cache;
   int offset = 0;
   CORE_ADDR base;
@@ -317,6 +318,7 @@ set_reg_offsets (struct frame_info *fi, 
   cache = mn10300_frame_unwind_cache (fi, this_cache);
   if (cache == NULL)
     return;
+  gdbarch = get_frame_arch (fi);
 
   if (frame_in_fp)
     {
@@ -324,12 +326,13 @@ set_reg_offsets (struct frame_info *fi, 
     }
   else
     {
-      base = frame_unwind_register_unsigned (fi, E_SP_REGNUM) + stack_extra_size;
+      base = frame_unwind_register_unsigned (fi, E_SP_REGNUM)
+	       + stack_extra_size;
     }
 
   trad_frame_set_this_base (cache, base);
 
-  if (AM33_MODE == 2)
+  if (AM33_MODE (gdbarch)== 2)
     {
       /* If bit N is set in fpregmask, fsN is saved on the stack.
 	 The floating point registers are saved in ascending order.
@@ -342,7 +345,8 @@ set_reg_offsets (struct frame_info *fi, 
 	    {
 	      if (fpregmask & (1 << i))
 		{
-		  trad_frame_set_reg_addr (cache, E_FS0_REGNUM + i, base + offset);
+		  trad_frame_set_reg_addr (cache, E_FS0_REGNUM + i,
+					   base + offset);
 		  offset += 4;
 		}
 	    }
@@ -385,7 +389,7 @@ set_reg_offsets (struct frame_info *fi, 
       trad_frame_set_reg_addr (cache, E_D2_REGNUM, base + offset);
       offset += 4;
     }
-  if (AM33_MODE)
+  if (AM33_MODE (gdbarch))
     {
       if (movm_args & movm_exother_bit)
         {
@@ -515,7 +519,7 @@ set_reg_offsets (struct frame_info *fi, 
    frame chain to not bother trying to unwind past this frame.  */
 
 static CORE_ADDR
-mn10300_analyze_prologue (struct frame_info *fi, 
+mn10300_analyze_prologue (struct gdbarch *gdbarch, struct frame_info *fi, 
 			  void **this_cache, 
 			  CORE_ADDR pc)
 {
@@ -604,7 +608,7 @@ mn10300_analyze_prologue (struct frame_i
 	goto finish_prologue;
     }
 
-  if (AM33_MODE == 2)
+  if (AM33_MODE (gdbarch)== 2)
     {
       /* Determine if any floating point registers are to be saved.
 	 Look for one of the following three prologue formats:
@@ -818,7 +822,8 @@ mn10300_analyze_prologue (struct frame_i
  finish_prologue:
   /* Note if/where callee saved registers were saved.  */
   if (fi)
-    set_reg_offsets (fi, this_cache, movm_args, fpregmask, stack_extra_size, frame_in_fp);
+    set_reg_offsets (fi, this_cache, movm_args, fpregmask, stack_extra_size,
+		     frame_in_fp);
   return addr;
 }
 
@@ -828,7 +833,7 @@ mn10300_analyze_prologue (struct frame_i
 static CORE_ADDR
 mn10300_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
 {
-  return mn10300_analyze_prologue (NULL, NULL, pc);
+  return mn10300_analyze_prologue (gdbarch, NULL, NULL, pc);
 }
 
 /* Simple frame_unwind_cache.  
@@ -837,6 +842,7 @@ struct trad_frame_cache *
 mn10300_frame_unwind_cache (struct frame_info *next_frame,
 			    void **this_prologue_cache)
 {
+  struct gdbarch *gdbarch;
   struct trad_frame_cache *cache;
   CORE_ADDR pc, start, end;
   void *cache_p;
@@ -844,9 +850,10 @@ mn10300_frame_unwind_cache (struct frame
   if (*this_prologue_cache)
     return (*this_prologue_cache);
 
+  gdbarch = get_frame_arch (next_frame);
   cache_p = trad_frame_cache_zalloc (next_frame);
-  pc = gdbarch_unwind_pc (get_frame_arch (next_frame), next_frame);
-  mn10300_analyze_prologue (next_frame, &cache_p, pc);
+  pc = gdbarch_unwind_pc (gdbarch, next_frame);
+  mn10300_analyze_prologue (gdbarch, next_frame, &cache_p, pc);
   cache = cache_p;
 
   if (find_pc_partial_function (pc, NULL, &start, &end))
diff -urpN src/gdb/mn10300-tdep.h dev/gdb/mn10300-tdep.h
--- src/gdb/mn10300-tdep.h	2008-01-01 23:53:12.000000000 +0100
+++ dev/gdb/mn10300-tdep.h	2008-01-15 05:53:58.000000000 +0100
@@ -77,4 +77,4 @@ struct gdbarch_tdep
   int am33_mode;
 };
 
-#define AM33_MODE (gdbarch_tdep (current_gdbarch)->am33_mode)
+#define AM33_MODE(gdbarch) (gdbarch_tdep (gdbarch)->am33_mode)