RFA: remove ppc-tdep.h's struct gdbarch_tdep's ppc_gplast_regnum

[Jim Blandy <jimb@redhat.com>]

2004-05-03  Jim Blandy  <jimb@redhat.com>

	* config/ppc-tdep.h (struct gdbarch_tdep): Delete
	'ppc_gplast_regnum' member.
	(ppc_num_gprs): New enum constant.
	* ppc-linux-nat.c (ppc_register_u_addr): Use tdep->ppc_gp0_regnum
	and ppc_num_gprs instead of tdep->ppc_gplast_regnum.
	* rs6000-nat.c (regmap, fetch_inferior_registers,
	store_inferior_registers): Same.
	* rs6000-tdep.c (e500_pseudo_register_read)
	(e500_pseudo_register_write): Same.
	(rs6000_gdbarch_init): Don't initialize tdep->ppc_gplast_regnum.
	
*** gdb/ppc-tdep.h	2004-05-03 16:45:41.000000000 -0500
--- gdb/ppc-tdep.h	2004-05-03 16:47:13.000000000 -0500
***************
*** 144,150 ****
      int *regoff;               /* byte offsets in register arrays */
      const struct reg *regs;    /* from current variant */
      int ppc_gp0_regnum;		/* GPR register 0 */
-     int ppc_gplast_regnum;	/* GPR register 31 */
      int ppc_toc_regnum;		/* TOC register */
      int ppc_ps_regnum;	        /* Processor (or machine) status (%msr) */
      int ppc_cr_regnum;		/* Condition register */
--- 144,149 ----
***************
*** 166,171 ****
--- 165,171 ----
  /* Constants for register set sizes.  */
  enum
    {
+     ppc_num_gprs = 32,          /* 32 general-purpose registers */
      ppc_num_fprs = 32           /* 32 floating-point registers */
    };
  
*** gdb/ppc-linux-nat.c	2004-05-03 16:45:41.000000000 -0500
--- gdb/ppc-linux-nat.c	2004-05-03 16:47:45.000000000 -0500
***************
*** 132,138 ****
    int wordsize = sizeof (PTRACE_XFER_TYPE);
  
    /* General purpose registers occupy 1 slot each in the buffer */
!   if (regno >= tdep->ppc_gp0_regnum && regno <= tdep->ppc_gplast_regnum )
      u_addr = ((regno - tdep->ppc_gp0_regnum + PT_R0) * wordsize);
  
    /* Floating point regs: eight bytes each in both 32- and 64-bit
--- 132,139 ----
    int wordsize = sizeof (PTRACE_XFER_TYPE);
  
    /* General purpose registers occupy 1 slot each in the buffer */
!   if (regno >= tdep->ppc_gp0_regnum 
!       && regno < tdep->ppc_gp0_regnum + ppc_num_gprs)
      u_addr = ((regno - tdep->ppc_gp0_regnum + PT_R0) * wordsize);
  
    /* Floating point regs: eight bytes each in both 32- and 64-bit
*** gdb/rs6000-nat.c	2004-05-03 16:45:41.000000000 -0500
--- gdb/rs6000-nat.c	2004-05-03 16:48:25.000000000 -0500
***************
*** 156,162 ****
    struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
  
    *isfloat = 0;
!   if (tdep->ppc_gp0_regnum <= regno && regno <= tdep->ppc_gplast_regnum)
      return regno;
    else if (FP0_REGNUM <= regno && regno < FP0_REGNUM + ppc_num_fprs)
      {
--- 156,163 ----
    struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
  
    *isfloat = 0;
!   if (tdep->ppc_gp0_regnum <= regno
!       && regno < tdep->ppc_gp0_regnum + ppc_num_gprs)
      return regno;
    else if (FP0_REGNUM <= regno && regno < FP0_REGNUM + ppc_num_fprs)
      {
***************
*** 350,356 ****
  
        /* Read 32 general purpose registers.  */
        for (regno = tdep->ppc_gp0_regnum;
!            regno <= tdep->ppc_gplast_regnum;
  	   regno++)
  	{
  	  fetch_register (regno);
--- 351,357 ----
  
        /* Read 32 general purpose registers.  */
        for (regno = tdep->ppc_gp0_regnum;
!            regno < tdep->ppc_gp0_regnum + ppc_num_gprs;
  	   regno++)
  	{
  	  fetch_register (regno);
***************
*** 389,395 ****
  
        /* Write general purpose registers first.  */
        for (regno = tdep->ppc_gp0_regnum;
!            regno <= tdep->ppc_gplast_regnum;
  	   regno++)
  	{
  	  store_register (regno);
--- 390,396 ----
  
        /* Write general purpose registers first.  */
        for (regno = tdep->ppc_gp0_regnum;
!            regno < tdep->ppc_gp0_regnum + ppc_num_gprs;
  	   regno++)
  	{
  	  store_register (regno);
*** gdb/rs6000-tdep.c	2004-05-03 16:45:41.000000000 -0500
--- gdb/rs6000-tdep.c	2004-05-03 16:49:03.000000000 -0500
***************
*** 1669,1675 ****
    struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 
  
    if (reg_nr >= tdep->ppc_gp0_regnum 
!       && reg_nr <= tdep->ppc_gplast_regnum)
      {
        base_regnum = reg_nr - tdep->ppc_gp0_regnum + tdep->ppc_ev0_regnum;
  
--- 1669,1675 ----
    struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 
  
    if (reg_nr >= tdep->ppc_gp0_regnum 
!       && reg_nr < tdep->ppc_gp0_regnum + ppc_num_gprs)
      {
        base_regnum = reg_nr - tdep->ppc_gp0_regnum + tdep->ppc_ev0_regnum;
  
***************
*** 1692,1698 ****
    struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 
  
    if (reg_nr >= tdep->ppc_gp0_regnum 
!       && reg_nr <= tdep->ppc_gplast_regnum)
      {
        base_regnum = reg_nr - tdep->ppc_gp0_regnum + tdep->ppc_ev0_regnum;
        /* reg_nr is 32 bit here, and base_regnum is 64 bits.  */
--- 1692,1698 ----
    struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 
  
    if (reg_nr >= tdep->ppc_gp0_regnum 
!       && reg_nr < tdep->ppc_gp0_regnum + ppc_num_gprs)
      {
        base_regnum = reg_nr - tdep->ppc_gp0_regnum + tdep->ppc_ev0_regnum;
        /* reg_nr is 32 bit here, and base_regnum is 64 bits.  */
***************
*** 2701,2707 ****
    tdep->regs = v->regs;
  
    tdep->ppc_gp0_regnum = 0;
-   tdep->ppc_gplast_regnum = 31;
    tdep->ppc_toc_regnum = 2;
    tdep->ppc_ps_regnum = 65;
    tdep->ppc_cr_regnum = 66;
--- 2701,2706 ----
***************
*** 2746,2752 ****
  	break;
        case bfd_mach_ppc_e500:
          tdep->ppc_gp0_regnum = 41;
-         tdep->ppc_gplast_regnum = tdep->ppc_gp0_regnum + 32 - 1;
          tdep->ppc_toc_regnum = -1;
          tdep->ppc_ps_regnum = 1;
          tdep->ppc_cr_regnum = 2;
--- 2745,2750 ----