* infrun.c (adjust_pc_after_break): Do not assume software single-step

[deliverable/binutils-gdb.git] / gdb / sh-tdep.c

diff --git a/gdb/sh-tdep.c b/gdb/sh-tdep.c
index 0d2b5ea51ea312bd746c202c7fd8a7052ea5e0d2..07cb3fad776275bed91109a24c1c346ca1a33bba 100644 (file)
--- a/gdb/sh-tdep.c
+++ b/gdb/sh-tdep.c
@@ -56,7 +56,7 @@
 /* registers numbers shared with the simulator */
 #include "gdb/sim-sh.h"
 
-static void (*sh_show_regs) (void);
+static void (*sh_show_regs) (struct frame_info *);
 
 #define SH_NUM_REGS 67
 
@@ -508,7 +508,7 @@ gdb_print_insn_sh (bfd_vma memaddr, disassemble_info * info)
 
 static CORE_ADDR
 sh_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc,
-                    struct sh_frame_cache *cache)
+                    struct sh_frame_cache *cache, ULONGEST fpscr)
 {
   ULONGEST inst;
   CORE_ADDR opc;
@@ -615,7 +615,7 @@ sh_analyze_prologue (CORE_ADDR pc, CORE_ADDR current_pc,
        }
       else if (IS_FPUSH (inst))
        {
-         if (read_register (FPSCR_REGNUM) & FPSCR_SZ)
+         if (fpscr & FPSCR_SZ)
            {
              cache->sp_offset += 8;
            }
@@ -728,7 +728,7 @@ sh_skip_prologue (CORE_ADDR start_pc)
     return max (pc, start_pc);
 
   cache.sp_offset = -4;
-  pc = sh_analyze_prologue (start_pc, (CORE_ADDR) -1, &cache);
+  pc = sh_analyze_prologue (start_pc, (CORE_ADDR) -1, &cache, 0);
   if (!cache.uses_fp)
     return start_pc;
 
@@ -815,18 +815,6 @@ sh_use_struct_convention (int gcc_p, struct type *type)
   return 1;
 }
 
-/* Extract from an array REGBUF containing the (raw) register state
-   the address in which a function should return its structure value,
-   as a CORE_ADDR (or an expression that can be used as one).  */
-static CORE_ADDR
-sh_extract_struct_value_address (struct regcache *regcache)
-{
-  ULONGEST addr;
-
-  regcache_cooked_read_unsigned (regcache, STRUCT_RETURN_REGNUM, &addr);
-  return addr;
-}
-
 static CORE_ADDR
 sh_frame_align (struct gdbarch *ignore, CORE_ADDR sp)
 {
@@ -1134,7 +1122,8 @@ sh_push_dummy_call_fpu (struct gdbarch *gdbarch,
   regcache_cooked_write_unsigned (regcache, PR_REGNUM, bp_addr);
 
   /* Update stack pointer.  */
-  regcache_cooked_write_unsigned (regcache, SP_REGNUM, sp);
+  regcache_cooked_write_unsigned (regcache,
+                                 gdbarch_sp_regnum (current_gdbarch), sp);
 
   return sp;
 }
@@ -1204,7 +1193,8 @@ sh_push_dummy_call_nofpu (struct gdbarch *gdbarch,
   regcache_cooked_write_unsigned (regcache, PR_REGNUM, bp_addr);
 
   /* Update stack pointer.  */
-  regcache_cooked_write_unsigned (regcache, SP_REGNUM, sp);
+  regcache_cooked_write_unsigned (regcache,
+                                 gdbarch_sp_regnum (current_gdbarch), sp);
 
   return sp;
 }
@@ -1245,7 +1235,7 @@ sh_extract_return_value_fpu (struct type *type, struct regcache *regcache,
   if (sh_treat_as_flt_p (type))
     {
       int len = TYPE_LENGTH (type);
-      int i, regnum = FP0_REGNUM;
+      int i, regnum = gdbarch_fp0_regnum (current_gdbarch);
       for (i = 0; i < len; i += 4)
        if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_LITTLE)
          regcache_raw_read (regcache, regnum++, (char *) valbuf + len - 4 - i);
@@ -1289,7 +1279,7 @@ sh_store_return_value_fpu (struct type *type, struct regcache *regcache,
   if (sh_treat_as_flt_p (type))
     {
       int len = TYPE_LENGTH (type);
-      int i, regnum = FP0_REGNUM;
+      int i, regnum = gdbarch_fp0_regnum (current_gdbarch);
       for (i = 0; i < len; i += 4)
        if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_LITTLE)
          regcache_raw_write (regcache, regnum++,
@@ -1332,507 +1322,705 @@ sh_return_value_fpu (struct gdbarch *gdbarch, struct type *type,
 /* Print the registers in a form similar to the E7000 */
 
 static void
-sh_generic_show_regs (void)
+sh_generic_show_regs (struct frame_info *frame)
 {
-  printf_filtered ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
-                  paddr (read_register (PC_REGNUM)),
-                  (long) read_register (SR_REGNUM),
-                  (long) read_register (PR_REGNUM),
-                  (long) read_register (MACH_REGNUM));
+  printf_filtered
+    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
+     paddr (get_frame_register_unsigned (frame,
+                                        gdbarch_pc_regnum (current_gdbarch))),
+     (long) get_frame_register_unsigned (frame, SR_REGNUM),
+     (long) get_frame_register_unsigned (frame, PR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
 
-  printf_filtered (
-       "     GBR %08lx      VBR %08lx                       MACL %08lx\n",
-                  (long) read_register (GBR_REGNUM),
-                  (long) read_register (VBR_REGNUM),
-                  (long) read_register (MACL_REGNUM));
+  printf_filtered
+    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
+     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
 
   printf_filtered
     ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-     (long) read_register (0), (long) read_register (1),
-     (long) read_register (2), (long) read_register (3),
-     (long) read_register (4), (long) read_register (5),
-     (long) read_register (6), (long) read_register (7));
-  printf_filtered ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (8), (long) read_register (9),
-                  (long) read_register (10), (long) read_register (11),
-                  (long) read_register (12), (long) read_register (13),
-                  (long) read_register (14), (long) read_register (15));
+     (long) get_frame_register_unsigned (frame, 0),
+     (long) get_frame_register_unsigned (frame, 1),
+     (long) get_frame_register_unsigned (frame, 2),
+     (long) get_frame_register_unsigned (frame, 3),
+     (long) get_frame_register_unsigned (frame, 4),
+     (long) get_frame_register_unsigned (frame, 5),
+     (long) get_frame_register_unsigned (frame, 6),
+     (long) get_frame_register_unsigned (frame, 7));
+  printf_filtered
+    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 8),
+     (long) get_frame_register_unsigned (frame, 9),
+     (long) get_frame_register_unsigned (frame, 10),
+     (long) get_frame_register_unsigned (frame, 11),
+     (long) get_frame_register_unsigned (frame, 12),
+     (long) get_frame_register_unsigned (frame, 13),
+     (long) get_frame_register_unsigned (frame, 14),
+     (long) get_frame_register_unsigned (frame, 15));
 }
 
 static void
-sh3_show_regs (void)
+sh3_show_regs (struct frame_info *frame)
 {
-  printf_filtered ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
-                  paddr (read_register (PC_REGNUM)),
-                  (long) read_register (SR_REGNUM),
-                  (long) read_register (PR_REGNUM),
-                  (long) read_register (MACH_REGNUM));
+  printf_filtered
+    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
+     paddr (get_frame_register_unsigned (frame,
+                                        gdbarch_pc_regnum (current_gdbarch))),
+     (long) get_frame_register_unsigned (frame, SR_REGNUM),
+     (long) get_frame_register_unsigned (frame, PR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
 
-  printf_filtered (
-       "     GBR %08lx      VBR %08lx                       MACL %08lx\n",
-                  (long) read_register (GBR_REGNUM),
-                  (long) read_register (VBR_REGNUM),
-                  (long) read_register (MACL_REGNUM));
-  printf_filtered ("     SSR %08lx      SPC %08lx\n",
-                  (long) read_register (SSR_REGNUM),
-                  (long) read_register (SPC_REGNUM));
+  printf_filtered
+    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
+     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
+  printf_filtered
+    ("     SSR %08lx      SPC %08lx\n",
+     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
+     (long) get_frame_register_unsigned (frame, SPC_REGNUM));
 
   printf_filtered
     ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-     (long) read_register (0), (long) read_register (1),
-     (long) read_register (2), (long) read_register (3),
-     (long) read_register (4), (long) read_register (5),
-     (long) read_register (6), (long) read_register (7));
-  printf_filtered ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (8), (long) read_register (9),
-                  (long) read_register (10), (long) read_register (11),
-                  (long) read_register (12), (long) read_register (13),
-                  (long) read_register (14), (long) read_register (15));
+     (long) get_frame_register_unsigned (frame, 0),
+     (long) get_frame_register_unsigned (frame, 1),
+     (long) get_frame_register_unsigned (frame, 2),
+     (long) get_frame_register_unsigned (frame, 3),
+     (long) get_frame_register_unsigned (frame, 4),
+     (long) get_frame_register_unsigned (frame, 5),
+     (long) get_frame_register_unsigned (frame, 6),
+     (long) get_frame_register_unsigned (frame, 7));
+  printf_filtered
+    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 8),
+     (long) get_frame_register_unsigned (frame, 9),
+     (long) get_frame_register_unsigned (frame, 10),
+     (long) get_frame_register_unsigned (frame, 11),
+     (long) get_frame_register_unsigned (frame, 12),
+     (long) get_frame_register_unsigned (frame, 13),
+     (long) get_frame_register_unsigned (frame, 14),
+     (long) get_frame_register_unsigned (frame, 15));
 }
 
-
 static void
-sh2e_show_regs (void)
-{
-  printf_filtered ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
-                  paddr (read_register (PC_REGNUM)),
-                  (long) read_register (SR_REGNUM),
-                  (long) read_register (PR_REGNUM),
-                  (long) read_register (MACH_REGNUM));
-
-  printf_filtered (
-       "     GBR %08lx      VBR %08lx                       MACL %08lx\n",
-                  (long) read_register (GBR_REGNUM),
-                  (long) read_register (VBR_REGNUM),
-                  (long) read_register (MACL_REGNUM));
-  printf_filtered (
-       "     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
-                  (long) read_register (SSR_REGNUM),
-                  (long) read_register (SPC_REGNUM),
-                  (long) read_register (FPUL_REGNUM),
-                  (long) read_register (FPSCR_REGNUM));
+sh2e_show_regs (struct frame_info *frame)
+{
+  printf_filtered
+    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
+     paddr (get_frame_register_unsigned (frame,
+                                        gdbarch_pc_regnum (current_gdbarch))),
+     (long) get_frame_register_unsigned (frame, SR_REGNUM),
+     (long) get_frame_register_unsigned (frame, PR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
+
+  printf_filtered
+    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
+     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
+  printf_filtered
+    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
+     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
+     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
 
   printf_filtered
     ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-     (long) read_register (0), (long) read_register (1),
-     (long) read_register (2), (long) read_register (3),
-     (long) read_register (4), (long) read_register (5),
-     (long) read_register (6), (long) read_register (7));
-  printf_filtered ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (8), (long) read_register (9),
-                  (long) read_register (10), (long) read_register (11),
-                  (long) read_register (12), (long) read_register (13),
-                  (long) read_register (14), (long) read_register (15));
-
-  printf_filtered ("FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (FP0_REGNUM + 0),
-                  (long) read_register (FP0_REGNUM + 1),
-                  (long) read_register (FP0_REGNUM + 2),
-                  (long) read_register (FP0_REGNUM + 3),
-                  (long) read_register (FP0_REGNUM + 4),
-                  (long) read_register (FP0_REGNUM + 5),
-                  (long) read_register (FP0_REGNUM + 6),
-                  (long) read_register (FP0_REGNUM + 7));
-  printf_filtered ("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (FP0_REGNUM + 8),
-                  (long) read_register (FP0_REGNUM + 9),
-                  (long) read_register (FP0_REGNUM + 10),
-                  (long) read_register (FP0_REGNUM + 11),
-                  (long) read_register (FP0_REGNUM + 12),
-                  (long) read_register (FP0_REGNUM + 13),
-                  (long) read_register (FP0_REGNUM + 14),
-                  (long) read_register (FP0_REGNUM + 15));
+     (long) get_frame_register_unsigned (frame, 0),
+     (long) get_frame_register_unsigned (frame, 1),
+     (long) get_frame_register_unsigned (frame, 2),
+     (long) get_frame_register_unsigned (frame, 3),
+     (long) get_frame_register_unsigned (frame, 4),
+     (long) get_frame_register_unsigned (frame, 5),
+     (long) get_frame_register_unsigned (frame, 6),
+     (long) get_frame_register_unsigned (frame, 7));
+  printf_filtered
+    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 8),
+     (long) get_frame_register_unsigned (frame, 9),
+     (long) get_frame_register_unsigned (frame, 10),
+     (long) get_frame_register_unsigned (frame, 11),
+     (long) get_frame_register_unsigned (frame, 12),
+     (long) get_frame_register_unsigned (frame, 13),
+     (long) get_frame_register_unsigned (frame, 14),
+     (long) get_frame_register_unsigned (frame, 15));
+
+  printf_filtered
+    ("FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 0),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 1),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 2),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 3),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 4),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 5),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 6),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 7));
+  printf_filtered
+    ("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 8),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 9),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 10),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 11),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 12),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 13),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 14),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 15));
 }
 
 static void
-sh2a_show_regs (void)
-{
-  int pr = read_register (FPSCR_REGNUM) & 0x80000;
-  printf_filtered ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
-                  paddr (read_register (PC_REGNUM)),
-                  (long) read_register (SR_REGNUM),
-                  (long) read_register (PR_REGNUM),
-                  (long) read_register (MACH_REGNUM));
-
-  printf_filtered (
-       "     GBR %08lx      VBR %08lx      TBR %08lx     MACL %08lx\n",
-                  (long) read_register (GBR_REGNUM),
-                  (long) read_register (VBR_REGNUM),
-                  (long) read_register (TBR_REGNUM),
-                  (long) read_register (MACL_REGNUM));
-  printf_filtered (
-       "     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
-                  (long) read_register (SSR_REGNUM),
-                  (long) read_register (SPC_REGNUM),
-                  (long) read_register (FPUL_REGNUM),
-                  (long) read_register (FPSCR_REGNUM));
-
-  printf_filtered ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (0), (long) read_register (1),
-                  (long) read_register (2), (long) read_register (3),
-                  (long) read_register (4), (long) read_register (5),
-                  (long) read_register (6), (long) read_register (7));
-  printf_filtered ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (8), (long) read_register (9),
-                  (long) read_register (10), (long) read_register (11),
-                  (long) read_register (12), (long) read_register (13),
-                  (long) read_register (14), (long) read_register (15));
-
-  printf_filtered (
-       (pr ? "DR0-DR6  %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
-           : "FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
-                  (long) read_register (FP0_REGNUM + 0),
-                  (long) read_register (FP0_REGNUM + 1),
-                  (long) read_register (FP0_REGNUM + 2),
-                  (long) read_register (FP0_REGNUM + 3),
-                  (long) read_register (FP0_REGNUM + 4),
-                  (long) read_register (FP0_REGNUM + 5),
-                  (long) read_register (FP0_REGNUM + 6),
-                  (long) read_register (FP0_REGNUM + 7));
-  printf_filtered (
-       (pr ? "DR8-DR14 %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
-           : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
-                  (long) read_register (FP0_REGNUM + 8),
-                  (long) read_register (FP0_REGNUM + 9),
-                  (long) read_register (FP0_REGNUM + 10),
-                  (long) read_register (FP0_REGNUM + 11),
-                  (long) read_register (FP0_REGNUM + 12),
-                  (long) read_register (FP0_REGNUM + 13),
-                  (long) read_register (FP0_REGNUM + 14),
-                  (long) read_register (FP0_REGNUM + 15));
-  printf_filtered ("BANK=%-3d\n", (int) read_register (BANK_REGNUM));
-  printf_filtered (
-       "R0b-R7b  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (R0_BANK0_REGNUM + 0),
-                  (long) read_register (R0_BANK0_REGNUM + 1),
-                  (long) read_register (R0_BANK0_REGNUM + 2),
-                  (long) read_register (R0_BANK0_REGNUM + 3),
-                  (long) read_register (R0_BANK0_REGNUM + 4),
-                  (long) read_register (R0_BANK0_REGNUM + 5),
-                  (long) read_register (R0_BANK0_REGNUM + 6),
-                  (long) read_register (R0_BANK0_REGNUM + 7));
-  printf_filtered ("R8b-R14b %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (R0_BANK0_REGNUM + 8),
-                  (long) read_register (R0_BANK0_REGNUM + 9),
-                  (long) read_register (R0_BANK0_REGNUM + 10),
-                  (long) read_register (R0_BANK0_REGNUM + 11),
-                  (long) read_register (R0_BANK0_REGNUM + 12),
-                  (long) read_register (R0_BANK0_REGNUM + 13),
-                  (long) read_register (R0_BANK0_REGNUM + 14));
-  printf_filtered ("MACHb=%08lx IVNb=%08lx PRb=%08lx GBRb=%08lx MACLb=%08lx\n",
-                  (long) read_register (R0_BANK0_REGNUM + 15),
-                  (long) read_register (R0_BANK0_REGNUM + 16),
-                  (long) read_register (R0_BANK0_REGNUM + 17),
-                  (long) read_register (R0_BANK0_REGNUM + 18),
-                  (long) read_register (R0_BANK0_REGNUM + 19));
+sh2a_show_regs (struct frame_info *frame)
+{
+  int pr = get_frame_register_unsigned (frame, FPSCR_REGNUM) & 0x80000;
+
+  printf_filtered
+    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
+     paddr (get_frame_register_unsigned (frame,
+                                        gdbarch_pc_regnum (current_gdbarch))),
+     (long) get_frame_register_unsigned (frame, SR_REGNUM),
+     (long) get_frame_register_unsigned (frame, PR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
+
+  printf_filtered
+    ("     GBR %08lx      VBR %08lx      TBR %08lx     MACL %08lx\n",
+     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, TBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
+  printf_filtered
+    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
+     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
+     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
+
+  printf_filtered
+    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 0),
+     (long) get_frame_register_unsigned (frame, 1),
+     (long) get_frame_register_unsigned (frame, 2),
+     (long) get_frame_register_unsigned (frame, 3),
+     (long) get_frame_register_unsigned (frame, 4),
+     (long) get_frame_register_unsigned (frame, 5),
+     (long) get_frame_register_unsigned (frame, 6),
+     (long) get_frame_register_unsigned (frame, 7));
+  printf_filtered
+    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 8),
+     (long) get_frame_register_unsigned (frame, 9),
+     (long) get_frame_register_unsigned (frame, 10),
+     (long) get_frame_register_unsigned (frame, 11),
+     (long) get_frame_register_unsigned (frame, 12),
+     (long) get_frame_register_unsigned (frame, 13),
+     (long) get_frame_register_unsigned (frame, 14),
+     (long) get_frame_register_unsigned (frame, 15));
+
+  printf_filtered
+    (pr ? "DR0-DR6  %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
+       : "FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 0),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 1),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 2),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 3),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 4),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 5),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 6),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 7));
+  printf_filtered
+    (pr ? "DR8-DR14 %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
+       : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 8),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 9),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 10),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 11),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 12),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 13),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 14),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 15));
+  printf_filtered
+    ("BANK=%-3d\n", (int) get_frame_register_unsigned (frame, BANK_REGNUM));
+  printf_filtered
+    ("R0b-R7b  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 0),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 1),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 2),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 3),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 4),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 5),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 6),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 7));
+  printf_filtered
+    ("R8b-R14b %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 8),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 9),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 10),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 11),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 12),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 13),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 14));
+  printf_filtered
+    ("MACHb=%08lx IVNb=%08lx PRb=%08lx GBRb=%08lx MACLb=%08lx\n",
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 15),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 16),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 17),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 18),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 19));
 }
 
 static void
-sh2a_nofpu_show_regs (void)
-{
-  int pr = read_register (FPSCR_REGNUM) & 0x80000;
-  printf_filtered ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
-                  paddr (read_register (PC_REGNUM)),
-                  (long) read_register (SR_REGNUM),
-                  (long) read_register (PR_REGNUM),
-                  (long) read_register (MACH_REGNUM));
-
-  printf_filtered (
-       "     GBR %08lx      VBR %08lx      TBR %08lx     MACL %08lx\n",
-                  (long) read_register (GBR_REGNUM),
-                  (long) read_register (VBR_REGNUM),
-                  (long) read_register (TBR_REGNUM),
-                  (long) read_register (MACL_REGNUM));
-  printf_filtered (
-       "     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
-                  (long) read_register (SSR_REGNUM),
-                  (long) read_register (SPC_REGNUM),
-                  (long) read_register (FPUL_REGNUM),
-                  (long) read_register (FPSCR_REGNUM));
-
-  printf_filtered ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (0), (long) read_register (1),
-                  (long) read_register (2), (long) read_register (3),
-                  (long) read_register (4), (long) read_register (5),
-                  (long) read_register (6), (long) read_register (7));
-  printf_filtered ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (8), (long) read_register (9),
-                  (long) read_register (10), (long) read_register (11),
-                  (long) read_register (12), (long) read_register (13),
-                  (long) read_register (14), (long) read_register (15));
-
-  printf_filtered ("BANK=%-3d\n", (int) read_register (BANK_REGNUM));
-  printf_filtered (
-       "R0b-R7b  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (R0_BANK0_REGNUM + 0),
-                  (long) read_register (R0_BANK0_REGNUM + 1),
-                  (long) read_register (R0_BANK0_REGNUM + 2),
-                  (long) read_register (R0_BANK0_REGNUM + 3),
-                  (long) read_register (R0_BANK0_REGNUM + 4),
-                  (long) read_register (R0_BANK0_REGNUM + 5),
-                  (long) read_register (R0_BANK0_REGNUM + 6),
-                  (long) read_register (R0_BANK0_REGNUM + 7));
-  printf_filtered ("R8b-R14b %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (R0_BANK0_REGNUM + 8),
-                  (long) read_register (R0_BANK0_REGNUM + 9),
-                  (long) read_register (R0_BANK0_REGNUM + 10),
-                  (long) read_register (R0_BANK0_REGNUM + 11),
-                  (long) read_register (R0_BANK0_REGNUM + 12),
-                  (long) read_register (R0_BANK0_REGNUM + 13),
-                  (long) read_register (R0_BANK0_REGNUM + 14));
-  printf_filtered ("MACHb=%08lx IVNb=%08lx PRb=%08lx GBRb=%08lx MACLb=%08lx\n",
-                  (long) read_register (R0_BANK0_REGNUM + 15),
-                  (long) read_register (R0_BANK0_REGNUM + 16),
-                  (long) read_register (R0_BANK0_REGNUM + 17),
-                  (long) read_register (R0_BANK0_REGNUM + 18),
-                  (long) read_register (R0_BANK0_REGNUM + 19));
+sh2a_nofpu_show_regs (struct frame_info *frame)
+{
+  int pr = get_frame_register_unsigned (frame, FPSCR_REGNUM) & 0x80000;
+
+  printf_filtered
+    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
+     paddr (get_frame_register_unsigned (frame,
+                                        gdbarch_pc_regnum (current_gdbarch))),
+     (long) get_frame_register_unsigned (frame, SR_REGNUM),
+     (long) get_frame_register_unsigned (frame, PR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
+
+  printf_filtered
+    ("     GBR %08lx      VBR %08lx      TBR %08lx     MACL %08lx\n",
+     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, TBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
+  printf_filtered
+    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
+     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
+     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
+
+  printf_filtered
+    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 0),
+     (long) get_frame_register_unsigned (frame, 1),
+     (long) get_frame_register_unsigned (frame, 2),
+     (long) get_frame_register_unsigned (frame, 3),
+     (long) get_frame_register_unsigned (frame, 4),
+     (long) get_frame_register_unsigned (frame, 5),
+     (long) get_frame_register_unsigned (frame, 6),
+     (long) get_frame_register_unsigned (frame, 7));
+  printf_filtered
+    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 8),
+     (long) get_frame_register_unsigned (frame, 9),
+     (long) get_frame_register_unsigned (frame, 10),
+     (long) get_frame_register_unsigned (frame, 11),
+     (long) get_frame_register_unsigned (frame, 12),
+     (long) get_frame_register_unsigned (frame, 13),
+     (long) get_frame_register_unsigned (frame, 14),
+     (long) get_frame_register_unsigned (frame, 15));
+
+  printf_filtered
+    ("BANK=%-3d\n", (int) get_frame_register_unsigned (frame, BANK_REGNUM));
+  printf_filtered
+    ("R0b-R7b  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 0),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 1),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 2),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 3),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 4),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 5),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 6),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 7));
+  printf_filtered
+    ("R8b-R14b %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 8),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 9),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 10),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 11),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 12),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 13),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 14));
+  printf_filtered
+    ("MACHb=%08lx IVNb=%08lx PRb=%08lx GBRb=%08lx MACLb=%08lx\n",
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 15),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 16),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 17),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 18),
+     (long) get_frame_register_unsigned (frame, R0_BANK0_REGNUM + 19));
 }
 
 static void
-sh3e_show_regs (void)
-{
-  printf_filtered ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
-                  paddr (read_register (PC_REGNUM)),
-                  (long) read_register (SR_REGNUM),
-                  (long) read_register (PR_REGNUM),
-                  (long) read_register (MACH_REGNUM));
-
-  printf_filtered (
-       "     GBR %08lx      VBR %08lx                       MACL %08lx\n",
-                  (long) read_register (GBR_REGNUM),
-                  (long) read_register (VBR_REGNUM),
-                  (long) read_register (MACL_REGNUM));
-  printf_filtered (
-       "     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
-                  (long) read_register (SSR_REGNUM),
-                  (long) read_register (SPC_REGNUM),
-                  (long) read_register (FPUL_REGNUM),
-                  (long) read_register (FPSCR_REGNUM));
+sh3e_show_regs (struct frame_info *frame)
+{
+  printf_filtered
+    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
+     paddr (get_frame_register_unsigned (frame,
+                                        gdbarch_pc_regnum (current_gdbarch))),
+     (long) get_frame_register_unsigned (frame, SR_REGNUM),
+     (long) get_frame_register_unsigned (frame, PR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
+
+  printf_filtered
+    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
+     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
+  printf_filtered
+    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
+     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
+     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
 
   printf_filtered
     ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-     (long) read_register (0), (long) read_register (1),
-     (long) read_register (2), (long) read_register (3),
-     (long) read_register (4), (long) read_register (5),
-     (long) read_register (6), (long) read_register (7));
-  printf_filtered ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (8), (long) read_register (9),
-                  (long) read_register (10), (long) read_register (11),
-                  (long) read_register (12), (long) read_register (13),
-                  (long) read_register (14), (long) read_register (15));
-
-  printf_filtered ("FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (FP0_REGNUM + 0),
-                  (long) read_register (FP0_REGNUM + 1),
-                  (long) read_register (FP0_REGNUM + 2),
-                  (long) read_register (FP0_REGNUM + 3),
-                  (long) read_register (FP0_REGNUM + 4),
-                  (long) read_register (FP0_REGNUM + 5),
-                  (long) read_register (FP0_REGNUM + 6),
-                  (long) read_register (FP0_REGNUM + 7));
-  printf_filtered ("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (FP0_REGNUM + 8),
-                  (long) read_register (FP0_REGNUM + 9),
-                  (long) read_register (FP0_REGNUM + 10),
-                  (long) read_register (FP0_REGNUM + 11),
-                  (long) read_register (FP0_REGNUM + 12),
-                  (long) read_register (FP0_REGNUM + 13),
-                  (long) read_register (FP0_REGNUM + 14),
-                  (long) read_register (FP0_REGNUM + 15));
+     (long) get_frame_register_unsigned (frame, 0),
+     (long) get_frame_register_unsigned (frame, 1),
+     (long) get_frame_register_unsigned (frame, 2),
+     (long) get_frame_register_unsigned (frame, 3),
+     (long) get_frame_register_unsigned (frame, 4),
+     (long) get_frame_register_unsigned (frame, 5),
+     (long) get_frame_register_unsigned (frame, 6),
+     (long) get_frame_register_unsigned (frame, 7));
+  printf_filtered
+    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 8),
+     (long) get_frame_register_unsigned (frame, 9),
+     (long) get_frame_register_unsigned (frame, 10),
+     (long) get_frame_register_unsigned (frame, 11),
+     (long) get_frame_register_unsigned (frame, 12),
+     (long) get_frame_register_unsigned (frame, 13),
+     (long) get_frame_register_unsigned (frame, 14),
+     (long) get_frame_register_unsigned (frame, 15));
+
+  printf_filtered
+    ("FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 0),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 1),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 2),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 3),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 4),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 5),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 6),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 7));
+  printf_filtered
+    ("FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 8),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 9),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 10),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 11),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 12),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 13),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 14),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 15));
 }
 
 static void
-sh3_dsp_show_regs (void)
+sh3_dsp_show_regs (struct frame_info *frame)
 {
-  printf_filtered ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
-                  paddr (read_register (PC_REGNUM)),
-                  (long) read_register (SR_REGNUM),
-                  (long) read_register (PR_REGNUM),
-                  (long) read_register (MACH_REGNUM));
+  printf_filtered
+    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
+     paddr (get_frame_register_unsigned (frame,
+                                        gdbarch_pc_regnum (current_gdbarch))),
+     (long) get_frame_register_unsigned (frame, SR_REGNUM),
+     (long) get_frame_register_unsigned (frame, PR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
 
-  printf_filtered (
-       "     GBR %08lx      VBR %08lx                       MACL %08lx\n",
-                  (long) read_register (GBR_REGNUM),
-                  (long) read_register (VBR_REGNUM),
-                  (long) read_register (MACL_REGNUM));
+  printf_filtered
+    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
+     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
 
-  printf_filtered ("     SSR %08lx      SPC %08lx      DSR %08lx\n",
-                  (long) read_register (SSR_REGNUM),
-                  (long) read_register (SPC_REGNUM),
-                  (long) read_register (DSR_REGNUM));
+  printf_filtered
+    ("     SSR %08lx      SPC %08lx      DSR %08lx\n",
+     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
+     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
+     (long) get_frame_register_unsigned (frame, DSR_REGNUM));
 
   printf_filtered
     ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-     (long) read_register (0), (long) read_register (1),
-     (long) read_register (2), (long) read_register (3),
-     (long) read_register (4), (long) read_register (5),
-     (long) read_register (6), (long) read_register (7));
-  printf_filtered ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (8), (long) read_register (9),
-                  (long) read_register (10), (long) read_register (11),
-                  (long) read_register (12), (long) read_register (13),
-                  (long) read_register (14), (long) read_register (15));
+     (long) get_frame_register_unsigned (frame, 0),
+     (long) get_frame_register_unsigned (frame, 1),
+     (long) get_frame_register_unsigned (frame, 2),
+     (long) get_frame_register_unsigned (frame, 3),
+     (long) get_frame_register_unsigned (frame, 4),
+     (long) get_frame_register_unsigned (frame, 5),
+     (long) get_frame_register_unsigned (frame, 6),
+     (long) get_frame_register_unsigned (frame, 7));
+  printf_filtered
+    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 8),
+     (long) get_frame_register_unsigned (frame, 9),
+     (long) get_frame_register_unsigned (frame, 10),
+     (long) get_frame_register_unsigned (frame, 11),
+     (long) get_frame_register_unsigned (frame, 12),
+     (long) get_frame_register_unsigned (frame, 13),
+     (long) get_frame_register_unsigned (frame, 14),
+     (long) get_frame_register_unsigned (frame, 15));
 
   printf_filtered
     ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
-     (long) read_register (A0G_REGNUM) & 0xff,
-     (long) read_register (A0_REGNUM), (long) read_register (M0_REGNUM),
-     (long) read_register (X0_REGNUM), (long) read_register (Y0_REGNUM),
-     (long) read_register (RS_REGNUM), (long) read_register (MOD_REGNUM));
-  printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n",
-                  (long) read_register (A1G_REGNUM) & 0xff,
-                  (long) read_register (A1_REGNUM),
-                  (long) read_register (M1_REGNUM),
-                  (long) read_register (X1_REGNUM),
-                  (long) read_register (Y1_REGNUM),
-                  (long) read_register (RE_REGNUM));
+     (long) get_frame_register_unsigned (frame, A0G_REGNUM) & 0xff,
+     (long) get_frame_register_unsigned (frame, A0_REGNUM),
+     (long) get_frame_register_unsigned (frame, M0_REGNUM),
+     (long) get_frame_register_unsigned (frame, X0_REGNUM),
+     (long) get_frame_register_unsigned (frame, Y0_REGNUM),
+     (long) get_frame_register_unsigned (frame, RS_REGNUM),
+     (long) get_frame_register_unsigned (frame, MOD_REGNUM));
+  printf_filtered
+    ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n",
+     (long) get_frame_register_unsigned (frame, A1G_REGNUM) & 0xff,
+     (long) get_frame_register_unsigned (frame, A1_REGNUM),
+     (long) get_frame_register_unsigned (frame, M1_REGNUM),
+     (long) get_frame_register_unsigned (frame, X1_REGNUM),
+     (long) get_frame_register_unsigned (frame, Y1_REGNUM),
+     (long) get_frame_register_unsigned (frame, RE_REGNUM));
 }
 
 static void
-sh4_show_regs (void)
-{
-  int pr = read_register (FPSCR_REGNUM) & 0x80000;
-  printf_filtered ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
-                  paddr (read_register (PC_REGNUM)),
-                  (long) read_register (SR_REGNUM),
-                  (long) read_register (PR_REGNUM),
-                  (long) read_register (MACH_REGNUM));
-
-  printf_filtered (
-       "     GBR %08lx      VBR %08lx                       MACL %08lx\n",
-                  (long) read_register (GBR_REGNUM),
-                  (long) read_register (VBR_REGNUM),
-                  (long) read_register (MACL_REGNUM));
-  printf_filtered (
-       "     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
-                  (long) read_register (SSR_REGNUM),
-                  (long) read_register (SPC_REGNUM),
-                  (long) read_register (FPUL_REGNUM),
-                  (long) read_register (FPSCR_REGNUM));
-
-  printf_filtered ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (0), (long) read_register (1),
-                  (long) read_register (2), (long) read_register (3),
-                  (long) read_register (4), (long) read_register (5),
-                  (long) read_register (6), (long) read_register (7));
-  printf_filtered ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (8), (long) read_register (9),
-                  (long) read_register (10), (long) read_register (11),
-                  (long) read_register (12), (long) read_register (13),
-                  (long) read_register (14), (long) read_register (15));
-
-  printf_filtered (
-       (pr ? "DR0-DR6  %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
-           : "FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
-                  (long) read_register (FP0_REGNUM + 0),
-                  (long) read_register (FP0_REGNUM + 1),
-                  (long) read_register (FP0_REGNUM + 2),
-                  (long) read_register (FP0_REGNUM + 3),
-                  (long) read_register (FP0_REGNUM + 4),
-                  (long) read_register (FP0_REGNUM + 5),
-                  (long) read_register (FP0_REGNUM + 6),
-                  (long) read_register (FP0_REGNUM + 7));
-  printf_filtered (
-       (pr ? "DR8-DR14 %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
-           : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n"),
-                  (long) read_register (FP0_REGNUM + 8),
-                  (long) read_register (FP0_REGNUM + 9),
-                  (long) read_register (FP0_REGNUM + 10),
-                  (long) read_register (FP0_REGNUM + 11),
-                  (long) read_register (FP0_REGNUM + 12),
-                  (long) read_register (FP0_REGNUM + 13),
-                  (long) read_register (FP0_REGNUM + 14),
-                  (long) read_register (FP0_REGNUM + 15));
+sh4_show_regs (struct frame_info *frame)
+{
+  int pr = get_frame_register_unsigned (frame, FPSCR_REGNUM) & 0x80000;
+
+  printf_filtered
+    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
+     paddr (get_frame_register_unsigned (frame,
+                                        gdbarch_pc_regnum (current_gdbarch))),
+     (long) get_frame_register_unsigned (frame, SR_REGNUM),
+     (long) get_frame_register_unsigned (frame, PR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
+
+  printf_filtered
+    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
+     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
+  printf_filtered
+    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
+     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
+     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
+
+  printf_filtered
+    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 0),
+     (long) get_frame_register_unsigned (frame, 1),
+     (long) get_frame_register_unsigned (frame, 2),
+     (long) get_frame_register_unsigned (frame, 3),
+     (long) get_frame_register_unsigned (frame, 4),
+     (long) get_frame_register_unsigned (frame, 5),
+     (long) get_frame_register_unsigned (frame, 6),
+     (long) get_frame_register_unsigned (frame, 7));
+  printf_filtered
+    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 8),
+     (long) get_frame_register_unsigned (frame, 9),
+     (long) get_frame_register_unsigned (frame, 10),
+     (long) get_frame_register_unsigned (frame, 11),
+     (long) get_frame_register_unsigned (frame, 12),
+     (long) get_frame_register_unsigned (frame, 13),
+     (long) get_frame_register_unsigned (frame, 14),
+     (long) get_frame_register_unsigned (frame, 15));
+
+  printf_filtered
+    (pr ? "DR0-DR6  %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
+       : "FP0-FP7  %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 0),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 1),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 2),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 3),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 4),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 5),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 6),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 7));
+  printf_filtered
+    (pr ? "DR8-DR14 %08lx%08lx  %08lx%08lx  %08lx%08lx  %08lx%08lx\n"
+       : "FP8-FP15 %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 8),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 9),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 10),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 11),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 12),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 13),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 14),
+     (long) get_frame_register_unsigned
+             (frame, gdbarch_fp0_regnum (current_gdbarch) + 15));
 }
 
 static void
-sh4_nofpu_show_regs (void)
-{
-  printf_filtered ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
-                  paddr (read_register (PC_REGNUM)),
-                  (long) read_register (SR_REGNUM),
-                  (long) read_register (PR_REGNUM),
-                  (long) read_register (MACH_REGNUM));
-
-  printf_filtered (
-       "     GBR %08lx      VBR %08lx                       MACL %08lx\n",
-                  (long) read_register (GBR_REGNUM),
-                  (long) read_register (VBR_REGNUM),
-                  (long) read_register (MACL_REGNUM));
-  printf_filtered (
-       "     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
-                  (long) read_register (SSR_REGNUM),
-                  (long) read_register (SPC_REGNUM),
-                  (long) read_register (FPUL_REGNUM),
-                  (long) read_register (FPSCR_REGNUM));
-
-  printf_filtered ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (0), (long) read_register (1),
-                  (long) read_register (2), (long) read_register (3),
-                  (long) read_register (4), (long) read_register (5),
-                  (long) read_register (6), (long) read_register (7));
-  printf_filtered ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (8), (long) read_register (9),
-                  (long) read_register (10), (long) read_register (11),
-                  (long) read_register (12), (long) read_register (13),
-                  (long) read_register (14), (long) read_register (15));
+sh4_nofpu_show_regs (struct frame_info *frame)
+{
+  printf_filtered
+    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
+     paddr (get_frame_register_unsigned (frame,
+                                        gdbarch_pc_regnum (current_gdbarch))),
+     (long) get_frame_register_unsigned (frame, SR_REGNUM),
+     (long) get_frame_register_unsigned (frame, PR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
+
+  printf_filtered
+    ("     GBR %08lx      VBR %08lx                       MACL %08lx\n",
+     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
+  printf_filtered
+    ("     SSR %08lx      SPC %08lx     FPUL %08lx    FPSCR %08lx\n",
+     (long) get_frame_register_unsigned (frame, SSR_REGNUM),
+     (long) get_frame_register_unsigned (frame, SPC_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPUL_REGNUM),
+     (long) get_frame_register_unsigned (frame, FPSCR_REGNUM));
+
+  printf_filtered
+    ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 0),
+     (long) get_frame_register_unsigned (frame, 1),
+     (long) get_frame_register_unsigned (frame, 2),
+     (long) get_frame_register_unsigned (frame, 3),
+     (long) get_frame_register_unsigned (frame, 4),
+     (long) get_frame_register_unsigned (frame, 5),
+     (long) get_frame_register_unsigned (frame, 6),
+     (long) get_frame_register_unsigned (frame, 7));
+  printf_filtered
+    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 8),
+     (long) get_frame_register_unsigned (frame, 9),
+     (long) get_frame_register_unsigned (frame, 10),
+     (long) get_frame_register_unsigned (frame, 11),
+     (long) get_frame_register_unsigned (frame, 12),
+     (long) get_frame_register_unsigned (frame, 13),
+     (long) get_frame_register_unsigned (frame, 14),
+     (long) get_frame_register_unsigned (frame, 15));
 }
 
 static void
-sh_dsp_show_regs (void)
+sh_dsp_show_regs (struct frame_info *frame)
 {
+  printf_filtered
+    ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
+     paddr (get_frame_register_unsigned (frame,
+                                        gdbarch_pc_regnum (current_gdbarch))),
+     (long) get_frame_register_unsigned (frame, SR_REGNUM),
+     (long) get_frame_register_unsigned (frame, PR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACH_REGNUM));
 
-  printf_filtered ("      PC %s       SR %08lx       PR %08lx     MACH %08lx\n",
-                  paddr (read_register (PC_REGNUM)),
-                  (long) read_register (SR_REGNUM),
-                  (long) read_register (PR_REGNUM),
-                  (long) read_register (MACH_REGNUM));
-
-  printf_filtered (
-       "     GBR %08lx      VBR %08lx      DSR %08lx     MACL %08lx\n",
-                  (long) read_register (GBR_REGNUM),
-                  (long) read_register (VBR_REGNUM),
-                  (long) read_register (DSR_REGNUM),
-                  (long) read_register (MACL_REGNUM));
+  printf_filtered
+    ("     GBR %08lx      VBR %08lx      DSR %08lx     MACL %08lx\n",
+     (long) get_frame_register_unsigned (frame, GBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, VBR_REGNUM),
+     (long) get_frame_register_unsigned (frame, DSR_REGNUM),
+     (long) get_frame_register_unsigned (frame, MACL_REGNUM));
 
   printf_filtered
     ("R0-R7    %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-     (long) read_register (0), (long) read_register (1),
-     (long) read_register (2), (long) read_register (3),
-     (long) read_register (4), (long) read_register (5),
-     (long) read_register (6), (long) read_register (7));
-  printf_filtered ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
-                  (long) read_register (8), (long) read_register (9),
-                  (long) read_register (10), (long) read_register (11),
-                  (long) read_register (12), (long) read_register (13),
-                  (long) read_register (14), (long) read_register (15));
+     (long) get_frame_register_unsigned (frame, 0),
+     (long) get_frame_register_unsigned (frame, 1),
+     (long) get_frame_register_unsigned (frame, 2),
+     (long) get_frame_register_unsigned (frame, 3),
+     (long) get_frame_register_unsigned (frame, 4),
+     (long) get_frame_register_unsigned (frame, 5),
+     (long) get_frame_register_unsigned (frame, 6),
+     (long) get_frame_register_unsigned (frame, 7));
+  printf_filtered
+    ("R8-R15   %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
+     (long) get_frame_register_unsigned (frame, 8),
+     (long) get_frame_register_unsigned (frame, 9),
+     (long) get_frame_register_unsigned (frame, 10),
+     (long) get_frame_register_unsigned (frame, 11),
+     (long) get_frame_register_unsigned (frame, 12),
+     (long) get_frame_register_unsigned (frame, 13),
+     (long) get_frame_register_unsigned (frame, 14),
+     (long) get_frame_register_unsigned (frame, 15));
 
   printf_filtered
     ("A0G=%02lx A0=%08lx M0=%08lx X0=%08lx Y0=%08lx RS=%08lx MOD=%08lx\n",
-     (long) read_register (A0G_REGNUM) & 0xff,
-     (long) read_register (A0_REGNUM), (long) read_register (M0_REGNUM),
-     (long) read_register (X0_REGNUM), (long) read_register (Y0_REGNUM),
-     (long) read_register (RS_REGNUM), (long) read_register (MOD_REGNUM));
+     (long) get_frame_register_unsigned (frame, A0G_REGNUM) & 0xff,
+     (long) get_frame_register_unsigned (frame, A0_REGNUM),
+     (long) get_frame_register_unsigned (frame, M0_REGNUM),
+     (long) get_frame_register_unsigned (frame, X0_REGNUM),
+     (long) get_frame_register_unsigned (frame, Y0_REGNUM),
+     (long) get_frame_register_unsigned (frame, RS_REGNUM),
+     (long) get_frame_register_unsigned (frame, MOD_REGNUM));
   printf_filtered ("A1G=%02lx A1=%08lx M1=%08lx X1=%08lx Y1=%08lx RE=%08lx\n",
-                  (long) read_register (A1G_REGNUM) & 0xff,
-                  (long) read_register (A1_REGNUM),
-                  (long) read_register (M1_REGNUM),
-                  (long) read_register (X1_REGNUM),
-                  (long) read_register (Y1_REGNUM),
-                  (long) read_register (RE_REGNUM));
+     (long) get_frame_register_unsigned (frame, A1G_REGNUM) & 0xff,
+     (long) get_frame_register_unsigned (frame, A1_REGNUM),
+     (long) get_frame_register_unsigned (frame, M1_REGNUM),
+     (long) get_frame_register_unsigned (frame, X1_REGNUM),
+     (long) get_frame_register_unsigned (frame, Y1_REGNUM),
+     (long) get_frame_register_unsigned (frame, RE_REGNUM));
 }
 
 static void
 sh_show_regs_command (char *args, int from_tty)
 {
   if (sh_show_regs)
-    (*sh_show_regs) ();
+    (*sh_show_regs) (get_current_frame ());
 }
 
 static struct type *
 sh_sh2a_register_type (struct gdbarch *gdbarch, int reg_nr)
 {
-  if ((reg_nr >= FP0_REGNUM
+  if ((reg_nr >= gdbarch_fp0_regnum (current_gdbarch)
        && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM))
     return builtin_type_float;
   else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
@@ -1846,7 +2034,7 @@ sh_sh2a_register_type (struct gdbarch *gdbarch, int reg_nr)
 static struct type *
 sh_sh3e_register_type (struct gdbarch *gdbarch, int reg_nr)
 {
-  if ((reg_nr >= FP0_REGNUM
+  if ((reg_nr >= gdbarch_fp0_regnum (current_gdbarch)
        && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM))
     return builtin_type_float;
   else
@@ -1865,7 +2053,7 @@ sh_sh4_build_float_register_type (int high)
 static struct type *
 sh_sh4_register_type (struct gdbarch *gdbarch, int reg_nr)
 {
-  if ((reg_nr >= FP0_REGNUM
+  if ((reg_nr >= gdbarch_fp0_regnum (current_gdbarch)
        && (reg_nr <= FP_LAST_REGNUM)) || (reg_nr == FPUL_REGNUM))
     return builtin_type_float;
   else if (reg_nr >= DR0_REGNUM && reg_nr <= DR_LAST_REGNUM)
@@ -1985,7 +2173,8 @@ fv_reg_base_num (int fv_regnum)
 {
   int fp_regnum;
 
-  fp_regnum = FP0_REGNUM + (fv_regnum - FV0_REGNUM) * 4;
+  fp_regnum = gdbarch_fp0_regnum (current_gdbarch)
+             + (fv_regnum - FV0_REGNUM) * 4;
   return fp_regnum;
 }
 
@@ -1995,7 +2184,8 @@ dr_reg_base_num (int dr_regnum)
 {
   int fp_regnum;
 
-  fp_regnum = FP0_REGNUM + (dr_regnum - DR0_REGNUM) * 2;
+  fp_regnum = gdbarch_fp0_regnum (current_gdbarch)
+             + (dr_regnum - DR0_REGNUM) * 2;
   return fp_regnum;
 }
 
@@ -2145,11 +2335,11 @@ sh_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
                          struct frame_info *next_frame)
 {
   /* Mark the PC as the destination for the return address.  */
-  if (regnum == PC_REGNUM)
+  if (regnum == gdbarch_pc_regnum (current_gdbarch))
     reg->how = DWARF2_FRAME_REG_RA;
 
   /* Mark the stack pointer as the call frame address.  */
-  else if (regnum == SP_REGNUM)
+  else if (regnum == gdbarch_sp_regnum (current_gdbarch))
     reg->how = DWARF2_FRAME_REG_CFA;
 
   /* The above was taken from the default init_reg in dwarf2-frame.c
@@ -2236,7 +2426,11 @@ sh_frame_cache (struct frame_info *next_frame, void **this_cache)
   cache->pc = frame_func_unwind (next_frame, NORMAL_FRAME);
   current_pc = frame_pc_unwind (next_frame);
   if (cache->pc != 0)
-    sh_analyze_prologue (cache->pc, current_pc, cache);
+    {
+      ULONGEST fpscr;
+      fpscr = frame_unwind_register_unsigned (next_frame, FPSCR_REGNUM);
+      sh_analyze_prologue (cache->pc, current_pc, cache, fpscr);
+    }
 
   if (!cache->uses_fp)
     {
@@ -2247,7 +2441,8 @@ sh_frame_cache (struct frame_info *next_frame, void **this_cache)
          setup yet.  Try to reconstruct the base address for the stack
          frame by looking at the stack pointer.  For truly "frameless"
          functions this might work too.  */
-      cache->base = frame_unwind_register_unsigned (next_frame, SP_REGNUM);
+      cache->base = frame_unwind_register_unsigned
+                   (next_frame, gdbarch_sp_regnum (current_gdbarch));
     }
 
   /* Now that we have the base address for the stack frame we can
@@ -2273,7 +2468,7 @@ sh_frame_prev_register (struct frame_info *next_frame, void **this_cache,
 
   gdb_assert (regnum >= 0);
 
-  if (regnum == SP_REGNUM && cache->saved_sp)
+  if (regnum == gdbarch_sp_regnum (current_gdbarch) && cache->saved_sp)
     {
       *optimizedp = 0;
       *lvalp = not_lval;
@@ -2290,7 +2485,7 @@ sh_frame_prev_register (struct frame_info *next_frame, void **this_cache,
   /* The PC of the previous frame is stored in the PR register of
      the current frame.  Frob regnum so that we pull the value from
      the correct place.  */
-  if (regnum == PC_REGNUM)
+  if (regnum == gdbarch_pc_regnum (current_gdbarch))
     regnum = PR_REGNUM;
 
   if (regnum < SH_NUM_REGS && cache->saved_regs[regnum] != -1)
@@ -2344,13 +2539,15 @@ sh_frame_sniffer (struct frame_info *next_frame)
 static CORE_ADDR
 sh_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
 {
-  return frame_unwind_register_unsigned (next_frame, SP_REGNUM);
+  return frame_unwind_register_unsigned (next_frame,
+                                        gdbarch_sp_regnum (current_gdbarch));
 }
 
 static CORE_ADDR
 sh_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
 {
-  return frame_unwind_register_unsigned (next_frame, PC_REGNUM);
+  return frame_unwind_register_unsigned (next_frame,
+                                        gdbarch_pc_regnum (current_gdbarch));
 }
 
 static struct frame_id
@@ -2541,11 +2738,7 @@ sh_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   set_gdbarch_print_insn (gdbarch, gdb_print_insn_sh);
   set_gdbarch_register_sim_regno (gdbarch, legacy_register_sim_regno);
 
-  set_gdbarch_write_pc (gdbarch, generic_target_write_pc);
-
   set_gdbarch_return_value (gdbarch, sh_return_value_nofpu);
-  set_gdbarch_deprecated_extract_struct_value_address (gdbarch,
-                                           sh_extract_struct_value_address);
 
   set_gdbarch_skip_prologue (gdbarch, sh_skip_prologue);
   set_gdbarch_inner_than (gdbarch, core_addr_lessthan);