H8300 Patch - Fix GDB crash problem when object file of different H8 cpu is loaded

[Michael Snyder]

Michael Snyder wrote:
> Andrew Cagney wrote:

>> Unfortunatly this isn't the right way to go. 

BTW, I'm glad you replied to this -- I was going to just approve it.  ;-)

> The only problem is, these functions would be called from the sim.
> Since the sim doesn't know about struct gdbarch, and since you've
> written them as using the global current_gdbarch anyway, they
> probably should have no argument.

On further reflection, Andrew, the sim also needs to be able to
set these variables.  In fact, they really belong to the sim,
in as much as that's where they're defined.


> 
> Michael
> 
>>
>>> Changelog -
>>> 2003-11-14  Dhananjay Deshpande <dhananjayd@kpitcummins.com>
>>>         * gdb/h8300-tdep.c (h8300_gdbarch_init): Set globals before 
>>> returning existing gdbarch
>>>
>>> ================================================================================= 
>>>
>>> --- gdb/h8300-tdep.c.old    2003-11-12 13:51:36.000000000 +0530
>>> +++ gdb/h8300-tdep.c    2003-11-14 11:08:29.000000000 +0530
>>> @@ -1176,6 +1176,53 @@ h8300_gdbarch_init (struct gdbarch_info    
>>> struct gdbarch_tdep *tdep = NULL;
>>>    struct gdbarch *gdbarch;
>>>  
>>> +  /* Set globals */
>>> +  switch (info.bfd_arch_info->mach)
>>> +    {
>>> +    case bfd_mach_h8300:
>>> +      h8300_normal_mode = 0;
>>> +      h8300sxmode = 0;
>>> +      h8300smode = 0;
>>> +      h8300hmode = 0;
>>> +      break;
>>> +    case bfd_mach_h8300h:
>>> +      h8300_normal_mode = 0;
>>> +      h8300sxmode = 0;
>>> +      h8300smode = 0;
>>> +      h8300hmode = 1;
>>> +      break;
>>> +    case bfd_mach_h8300hn:
>>> +      h8300_normal_mode = 1;
>>> +      h8300sxmode = 0;
>>> +      h8300smode = 0;
>>> +      h8300hmode = 1;
>>> +      break;
>>> +    case bfd_mach_h8300s:
>>> +      h8300_normal_mode = 0;
>>> +      h8300sxmode = 0;
>>> +      h8300smode = 1;
>>> +      h8300hmode = 1;
>>> +      break;
>>> +    case bfd_mach_h8300sn:
>>> +      h8300_normal_mode = 1;
>>> +      h8300sxmode = 0;
>>> +      h8300smode = 1;
>>> +      h8300hmode = 1;
>>> +      break;
>>> +    case bfd_mach_h8300sx:
>>> +      h8300_normal_mode = 0;
>>> +      h8300sxmode = 1;
>>> +      h8300smode = 1;
>>> +      h8300hmode = 1;
>>> +      break;
>>> +    case bfd_mach_h8300sxn:
>>> +      h8300_normal_mode = 1;
>>> +      h8300sxmode = 1;
>>> +      h8300smode = 1;
>>> +      h8300hmode = 1;
>>> +      break;
>>> +    }
>>> +
>>>    arches = gdbarch_list_lookup_by_info (arches, &info);
>>>    if (arches != NULL)
>>>      return arches->gdbarch;
>>> @@ -1192,9 +1239,6 @@ h8300_gdbarch_init (struct gdbarch_info    
>>> switch (info.bfd_arch_info->mach)
>>>      {
>>>      case bfd_mach_h8300:
>>> -      h8300sxmode = 0;
>>> -      h8300smode = 0;
>>> -      h8300hmode = 0;
>>>        set_gdbarch_num_regs (gdbarch, 13);
>>>        set_gdbarch_num_pseudo_regs (gdbarch, 1);
>>>        set_gdbarch_ecoff_reg_to_regnum (gdbarch, 
>>> h8300_dbg_reg_to_regnum);
>>> @@ -1210,9 +1254,6 @@ h8300_gdbarch_init (struct gdbarch_info        
>>> break;
>>>      case bfd_mach_h8300h:
>>>      case bfd_mach_h8300hn:
>>> -      h8300sxmode = 0;
>>> -      h8300smode = 0;
>>> -      h8300hmode = 1;
>>>        set_gdbarch_num_regs (gdbarch, 13);
>>>        set_gdbarch_num_pseudo_regs (gdbarch, 1);
>>>        set_gdbarch_ecoff_reg_to_regnum (gdbarch, 
>>> h8300_dbg_reg_to_regnum);
>>> @@ -1222,13 +1263,11 @@ h8300_gdbarch_init (struct 
>>> gdbarch_info        set_gdbarch_register_name (gdbarch, 
>>> h8300_register_name);
>>>        if(info.bfd_arch_info->mach != bfd_mach_h8300hn)
>>>          {
>>> -          h8300_normal_mode = 0;
>>>            set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
>>>            set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
>>>          }
>>>        else
>>>          {
>>> -          h8300_normal_mode = 1;
>>>            set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
>>>            set_gdbarch_addr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
>>>          }
>>> @@ -1238,9 +1277,6 @@ h8300_gdbarch_init (struct gdbarch_info        
>>> break;
>>>      case bfd_mach_h8300s:
>>>      case bfd_mach_h8300sn:
>>> -      h8300sxmode = 0;
>>> -      h8300smode = 1;
>>> -      h8300hmode = 1;
>>>        set_gdbarch_num_regs (gdbarch, 16);
>>>        set_gdbarch_num_pseudo_regs (gdbarch, 2);
>>>        set_gdbarch_ecoff_reg_to_regnum (gdbarch, 
>>> h8300s_dbg_reg_to_regnum);
>>> @@ -1250,13 +1286,11 @@ h8300_gdbarch_init (struct 
>>> gdbarch_info        set_gdbarch_register_name (gdbarch, 
>>> h8300s_register_name);
>>>        if(info.bfd_arch_info->mach != bfd_mach_h8300sn)
>>>          {
>>> -          h8300_normal_mode = 0;
>>>            set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
>>>            set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
>>>          }
>>>        else
>>>          {
>>> -          h8300_normal_mode = 1;
>>>            set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
>>>            set_gdbarch_addr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
>>>          }
>>> @@ -1266,9 +1300,6 @@ h8300_gdbarch_init (struct gdbarch_info        
>>> break;
>>>      case bfd_mach_h8300sx:
>>>      case bfd_mach_h8300sxn:
>>> -      h8300sxmode = 1;
>>> -      h8300smode = 1;
>>> -      h8300hmode = 1;
>>>        set_gdbarch_num_regs (gdbarch, 18);
>>>        set_gdbarch_num_pseudo_regs (gdbarch, 2);
>>>        set_gdbarch_ecoff_reg_to_regnum (gdbarch, 
>>> h8300s_dbg_reg_to_regnum);
>>> @@ -1278,13 +1309,11 @@ h8300_gdbarch_init (struct 
>>> gdbarch_info        set_gdbarch_register_name (gdbarch, 
>>> h8300sx_register_name);
>>>        if(info.bfd_arch_info->mach != bfd_mach_h8300sxn)
>>>          {
>>> -          h8300_normal_mode = 0;
>>>            set_gdbarch_ptr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
>>>            set_gdbarch_addr_bit (gdbarch, 4 * TARGET_CHAR_BIT);
>>>          }
>>>        else
>>>          {
>>> -          h8300_normal_mode = 1;
>>>            set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
>>>            set_gdbarch_addr_bit (gdbarch, 2 * TARGET_CHAR_BIT);
>>>          }
>>> ================================================================================= 
>>>
>>>
>>
>>
>>
> 
> 
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