[RFA] arm_scan_prologue: accept strh and strb as well as str

[Michael Snyder <msnyder@cygnus.com>]

Hi Richard, 

These are for char and short args, respectively.
The more I play with it, the more I want to merge
arm_scan and arm_skip into one function.  ;-)

Michael

2002-04-25  Michael Snyder  <msnyder@redhat.com>

	* arm-tdep.c (arm_scan_prologue): Accept strb r(0123),[r11,#-nn]
	and strh r(0123),[r11,#-nn] as well as str r(0123),[r11,#-nn].
	(arm_skip_prologue): Ditto.

Index: arm-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/arm-tdep.c,v
retrieving revision 1.55
diff -c -3 -p -r1.55 arm-tdep.c
*** arm-tdep.c	24 Apr 2002 21:22:06 -0000	1.55
--- arm-tdep.c	26 Apr 2002 01:28:12 -0000
*************** arm_skip_prologue (CORE_ADDR pc)
*** 468,474 ****
        inst = read_memory_integer (skip_pc, 4);
      }
  
!   if ((inst & 0xfffff800) == 0xe92dd800)	/* stmfd sp!,{fp,ip,lr,pc} */
      {
        skip_pc += 4;
        inst = read_memory_integer (skip_pc, 4);
--- 468,474 ----
        inst = read_memory_integer (skip_pc, 4);
      }
  
!   if ((inst & 0xfffff800) == 0xe92dd800)	/* stmfd sp!,{...,fp,ip,lr,pc} */
      {
        skip_pc += 4;
        inst = read_memory_integer (skip_pc, 4);
*************** arm_skip_prologue (CORE_ADDR pc)
*** 507,513 ****
        inst = read_memory_integer (skip_pc, 4);
      }
  
!   while ((inst & 0xffffcfc0) == 0xe50b0000)     /* str r(0123), [r11, #-nn] */
      {
        skip_pc += 4;
        inst = read_memory_integer (skip_pc, 4);
--- 507,515 ----
        inst = read_memory_integer (skip_pc, 4);
      }
  
!   while ((inst & 0xffffcfff) == 0xe54b0000 ||	/* strb r(0123),[r11,#-nn] */
! 	 (inst & 0xffffc0f0) == 0xe14b00b0 ||	/* strh r(0123),[r11,#-nn] */
! 	 (inst & 0xffffcfc0) == 0xe50b0000)	/* str  r(0123),[r11,#-nn] */
      {
        skip_pc += 4;
        inst = read_memory_integer (skip_pc, 4);
*************** arm_scan_prologue (struct frame_info *fi
*** 905,911 ****
  		fi->saved_regs[regno] = sp_offset;
  	      }
  	}
!       else if ((insn & 0xffffcfc0) == 0xe50b0000)       /* str rx, [r11, -n] */
  	{
  	  /* No need to add this to saved_regs -- it's just an arg reg.  */
  	  continue;
--- 907,915 ----
  		fi->saved_regs[regno] = sp_offset;
  	      }
  	}
!       else if ((insn & 0xffffcfff) == 0xe54b0000 ||     /* strb rx,[r11,#-n] */
! 	       (insn & 0xffffc0f0) == 0xe14b00b0 ||     /* strh rx,[r11,#-n] */
! 	       (insn & 0xffffcfc0) == 0xe50b0000)       /* str  rx,[r11,#-n] */
  	{
  	  /* No need to add this to saved_regs -- it's just an arg reg.  */
  	  continue;