[commit] ARM : one-line prologue analysis

[Jerome Guitton <guitton@act-europe.fr>]

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I merged the two patches, and committed them.

-- 
Jerome

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2003-09-29  Jerome Guitton  <guitton@act-europe.fr>

	* arm-tdep.c (arm_make_prologue_cache): Use trad_frame_addr_p to
	test if the register has been saved on the stack.
	(arm_scan_prologue_cache): When analysing the instruction
	"str lr, [sp, #-4]", save the address where lr has been stored.

Index: arm-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/arm-tdep.c,v
retrieving revision 1.151
diff -c -p -r1.151 arm-tdep.c
*** arm-tdep.c	25 Sep 2003 14:21:00 -0000	1.151
--- arm-tdep.c	29 Sep 2003 13:11:51 -0000
*************** arm_scan_prologue (struct frame_info *ne
*** 845,851 ****
  	}
        else if (insn == 0xe52de004)	/* str lr, [sp, #-4]! */
  	{
! 	  /* Function is frameless: extra_info defaults OK?  */
  	  continue;
  	}
        else if ((insn & 0xffff0000) == 0xe92d0000)
--- 845,852 ----
  	}
        else if (insn == 0xe52de004)	/* str lr, [sp, #-4]! */
  	{
! 	  sp_offset -= 4;
! 	  cache->saved_regs[ARM_LR_REGNUM].addr = sp_offset;
  	  continue;
  	}
        else if ((insn & 0xffff0000) == 0xe92d0000)
*************** arm_make_prologue_cache (struct frame_in
*** 967,973 ****
    /* Calculate actual addresses of saved registers using offsets
       determined by arm_scan_prologue.  */
    for (reg = 0; reg < NUM_REGS; reg++)
!     if (cache->saved_regs[reg].addr != 0)
        cache->saved_regs[reg].addr += cache->prev_sp;
  
    return cache;
--- 968,974 ----
    /* Calculate actual addresses of saved registers using offsets
       determined by arm_scan_prologue.  */
    for (reg = 0; reg < NUM_REGS; reg++)
!     if (trad_frame_addr_p (cache->saved_regs, reg))
        cache->saved_regs[reg].addr += cache->prev_sp;
  
    return cache;