* rs6000-tdep.c (rs6000_dwarf2_stab_reg_to_regnum): New, unified

function for register numbers on all the rs6000-derived targets.
(rs6000_gdbarch_init): Don't register a separate
gdbarch_dwarf2_reg_to_regnum function for the E500.  Use
rs6000_dwarf2_stab_reg_to_regnum for both Dwarf 2 and stabs on all
variants.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index aada64c..29f405f 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,12 @@
 2004-04-01  Jim Blandy  <jimb@redhat.com>
 
+       * rs6000-tdep.c (rs6000_dwarf2_stab_reg_to_regnum): New, unified
+       function for register numbers on all the rs6000-derived targets.
+       (rs6000_gdbarch_init): Don't register a separate
+       gdbarch_dwarf2_reg_to_regnum function for the E500.  Use
+       rs6000_dwarf2_stab_reg_to_regnum for both Dwarf 2 and stabs on all
+       variants.
+
        * i386-tdep.c: Add FIXME regarding STABS vs. Dwarf 2 register
        numbering.
 

diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c
index 00062da..b4d6248 100644 (file)
--- a/gdb/rs6000-tdep.c
+++ b/gdb/rs6000-tdep.c
@@ -1556,42 +1556,47 @@ e500_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache,
     }
 }
 
-/* Convert a dwarf2 register number to a gdb REGNUM.  */
+/* Convert a dbx stab or Dwarf 2 register number (from `r'
+   declaration) to a gdb REGNUM.  */
 static int
-e500_dwarf2_reg_to_regnum (int num)
+rs6000_dwarf2_stab_reg_to_regnum (int num)
 {
-  int regnum;
-  if (0 <= num && num <= 31)
-    return num + gdbarch_tdep (current_gdbarch)->ppc_gp0_regnum;
-  else 
-    return num;
-}
+  struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
 
-/* Convert a dbx stab register number (from `r' declaration) to a gdb
-   REGNUM.  */
-static int
-rs6000_stab_reg_to_regnum (int num)
-{
-  int regnum;
-  switch (num)
-    {
-    case 64: 
-      regnum = gdbarch_tdep (current_gdbarch)->ppc_mq_regnum;
-      break;
-    case 65: 
-      regnum = gdbarch_tdep (current_gdbarch)->ppc_lr_regnum;
-      break;
-    case 66: 
-      regnum = gdbarch_tdep (current_gdbarch)->ppc_ctr_regnum;
-      break;
-    case 76: 
-      regnum = gdbarch_tdep (current_gdbarch)->ppc_xer_regnum;
-      break;
-    default: 
-      regnum = num;
-      break;
-    }
-  return regnum;
+  if (0 <= num && num <= 31)
+    return tdep->ppc_gp0_regnum + num;
+  else if (32 <= num && num <= 63)
+    return FP0_REGNUM + (num - 32);
+  else if (1200 <= num && num < 1200 + 32)
+    return tdep->ppc_ev0_regnum + (num - 1200);
+  else
+    switch (num)
+      {
+      case 64: 
+        return tdep->ppc_mq_regnum;
+      case 65:
+        return tdep->ppc_lr_regnum;
+      case 66: 
+        return tdep->ppc_ctr_regnum;
+      case 76: 
+        return tdep->ppc_xer_regnum;
+      case 109:
+        return tdep->ppc_vrsave_regnum;
+      default: 
+        return num;
+      }
+
+  /* FIXME: jimb/2004-03-28: Doesn't something need to be done here
+     for the Altivec registers, too?
+
+     Looking at GCC, the headers in config/rs6000 never define a
+     DBX_REGISTER_NUMBER macro, so the debug info uses the same
+     numbers GCC does internally.  Then, looking at the REGISTER_NAMES
+     macro defined in config/rs6000/rs6000.h, it seems that GCC gives
+     v0 -- v31 the numbers 77 -- 108.  But we number them 119 -- 150.
+
+     I don't have a way to test this ready to hand, but I noticed it
+     and thought I should include a note.  */
 }
 
 static void
@@ -2599,7 +2604,6 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
         set_gdbarch_pc_regnum (gdbarch, 0);
         set_gdbarch_sp_regnum (gdbarch, tdep->ppc_gp0_regnum + 1);
         set_gdbarch_deprecated_fp_regnum (gdbarch, tdep->ppc_gp0_regnum + 1);
-        set_gdbarch_dwarf2_reg_to_regnum (gdbarch, e500_dwarf2_reg_to_regnum);
         set_gdbarch_pseudo_register_read (gdbarch, e500_pseudo_register_read);
         set_gdbarch_pseudo_register_write (gdbarch, e500_pseudo_register_write);
        break;
@@ -2674,7 +2678,8 @@ rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   set_gdbarch_deprecated_register_convertible (gdbarch, rs6000_register_convertible);
   set_gdbarch_deprecated_register_convert_to_virtual (gdbarch, rs6000_register_convert_to_virtual);
   set_gdbarch_deprecated_register_convert_to_raw (gdbarch, rs6000_register_convert_to_raw);
-  set_gdbarch_stab_reg_to_regnum (gdbarch, rs6000_stab_reg_to_regnum);
+  set_gdbarch_stab_reg_to_regnum (gdbarch, rs6000_dwarf2_stab_reg_to_regnum);
+  set_gdbarch_dwarf2_reg_to_regnum (gdbarch, rs6000_dwarf2_stab_reg_to_regnum);
   /* Note: kevinb/2002-04-12: I'm not convinced that rs6000_push_arguments()
      is correct for the SysV ABI when the wordsize is 8, but I'm also
      fairly certain that ppc_sysv_abi_push_arguments() will give even