[RFA] Improvements for sh double register display

[Michael Snyder <msnyder@redhat.com>]

[-- Attachment #1: Type: text/plain, Size: 0 bytes --]



[-- Attachment #2: sh-tdep --]
[-- Type: text/plain, Size: 2090 bytes --]

2003-07-02  Michael Snyder  <msnyder@redhat.com>

	* sh-tdep.c (do_dr_register_info): Fix register number output
	(0, 2, 4, ... not 0, 1, 2...).  Display DP register both in
	hex and in floating point (noting when it is not valid FP).

Index: sh-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/sh-tdep.c,v
retrieving revision 1.132
diff -p -r1.132 sh-tdep.c
*** sh-tdep.c	13 Jun 2003 04:40:34 -0000	1.132
--- sh-tdep.c	2 Jul 2003 18:00:22 -0000
*************** static void
*** 3928,3938 ****
  do_dr_register_info (int dr_regnum)
  {
    int first_fp_reg_num = dr_reg_base_num (dr_regnum);
  
!   printf_filtered ("dr%d\t0x%08x%08x\n", 
! 		    dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM, 
! 		    (int) read_register (first_fp_reg_num),
! 		    (int) read_register (first_fp_reg_num + 1));
  }
  
  /* Double precision registers, compact mode. */
--- 3928,3962 ----
  do_dr_register_info (int dr_regnum)
  {
    int first_fp_reg_num = dr_reg_base_num (dr_regnum);
+   char *raw_buffer;
+   double dbl;
+   int inv;
  
!   /* Allocate space for the float. */
!   raw_buffer = (char *) alloca (2 * REGISTER_RAW_SIZE (FP0_REGNUM));
! 
!   /* Get the data in raw format.  */
!   if (!frame_register_read (get_selected_frame (), 
! 			    first_fp_reg_num, raw_buffer)
!       || !frame_register_read (get_selected_frame (), 
! 			       first_fp_reg_num + 1, 
! 			       raw_buffer + REGISTER_RAW_SIZE (FP0_REGNUM)))
!     error ("can't read register %d (%s)", 
! 	   dr_regnum, REGISTER_NAME (dr_regnum));
! 
!   /* Get the register as a number */ 
!   dbl = unpack_double (builtin_type_double, raw_buffer, &inv);
! 
!   dr_regnum = 2 * (dr_regnum - gdbarch_tdep (current_gdbarch)->DR0_REGNUM);
!   printf_filtered ("dr%d\t0x%08x%08x  ", 
! 		   dr_regnum,
! 		   (int) read_register (first_fp_reg_num),
! 		   (int) read_register (first_fp_reg_num + 1));
! 
!   if (inv)
!     printf_filtered ("<invalid double>\n");
!   else
!     printf_filtered ("(%.9g)\n", dbl);
  }
  
  /* Double precision registers, compact mode. */