* 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.

5 files changed, 20 insertions, 9 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0352eed..1a403ec 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,16 @@
 2004-05-04  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.
+
 	* config/rs6000/tm-rs6000.h (FPLAST_REGNUM): Delete #definition.
 	* ppc-tdep.h (ppc_num_fprs): New enum constant.
 	* aix-thread.c (fetch_regs_kernel_thread, fill_fprs,
diff --git a/gdb/ppc-linux-nat.c b/gdb/ppc-linux-nat.c
index a6ae600..fc8508d 100644
--- a/gdb/ppc-linux-nat.c
+++ b/gdb/ppc-linux-nat.c
@@ -132,7 +132,8 @@ ppc_register_u_addr (int regno)
   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 )
+  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
diff --git a/gdb/ppc-tdep.h b/gdb/ppc-tdep.h
index c8b4100..4830c5e 100644
--- a/gdb/ppc-tdep.h
+++ b/gdb/ppc-tdep.h
@@ -144,7 +144,6 @@ struct gdbarch_tdep
     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 */
@@ -166,6 +165,7 @@ struct gdbarch_tdep
 /* Constants for register set sizes.  */
 enum
   {
+    ppc_num_gprs = 32,          /* 32 general-purpose registers */
     ppc_num_fprs = 32           /* 32 floating-point registers */
   };
 
diff --git a/gdb/rs6000-nat.c b/gdb/rs6000-nat.c
index 3d66e982..5628a2e 100644
--- a/gdb/rs6000-nat.c
+++ b/gdb/rs6000-nat.c
@@ -156,7 +156,8 @@ regmap (int regno, int *isfloat)
   struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
 
   *isfloat = 0;
-  if (tdep->ppc_gp0_regnum <= regno && regno <= tdep->ppc_gplast_regnum)
+  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)
     {
@@ -350,7 +351,7 @@ fetch_inferior_registers (int regno)
 
       /* Read 32 general purpose registers.  */
       for (regno = tdep->ppc_gp0_regnum;
-           regno <= tdep->ppc_gplast_regnum;
+           regno < tdep->ppc_gp0_regnum + ppc_num_gprs;
 	   regno++)
 	{
 	  fetch_register (regno);
@@ -389,7 +390,7 @@ store_inferior_registers (int regno)
 
       /* Write general purpose registers first.  */
       for (regno = tdep->ppc_gp0_regnum;
-           regno <= tdep->ppc_gplast_regnum;
+           regno < tdep->ppc_gp0_regnum + ppc_num_gprs;
 	   regno++)
 	{
 	  store_register (regno);
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c
index 721443e..8a78ff2 100644
--- a/gdb/rs6000-tdep.c
+++ b/gdb/rs6000-tdep.c
@@ -1669,7 +1669,7 @@ e500_pseudo_register_read (struct gdbarch *gdbarch, struct regcache *regcache,
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 
 
   if (reg_nr >= tdep->ppc_gp0_regnum 
-      && reg_nr <= tdep->ppc_gplast_regnum)
+      && reg_nr < tdep->ppc_gp0_regnum + ppc_num_gprs)
     {
       base_regnum = reg_nr - tdep->ppc_gp0_regnum + tdep->ppc_ev0_regnum;
 
@@ -1692,7 +1692,7 @@ e500_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); 
 
   if (reg_nr >= tdep->ppc_gp0_regnum 
-      && reg_nr <= tdep->ppc_gplast_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.  */
@@ -2701,7 +2701,6 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   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;
@@ -2746,7 +2745,6 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
 	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;