diff --git a/gdb/avr-tdep.c b/gdb/avr-tdep.c
index 7f88e8f..c44a3aa 100644
--- a/gdb/avr-tdep.c
+++ b/gdb/avr-tdep.c
@@ -367,10 +367,11 @@ avr_integer_to_address (struct gdbarch *gdbarch,
 }
 
 static CORE_ADDR
-avr_read_pc (struct regcache *regcache)
+avr_read_pc (readable_regcache *regcache)
 {
   ULONGEST pc;
-  regcache_cooked_read_unsigned (regcache, AVR_PC_REGNUM, &pc);
+
+  regcache->cooked_read (AVR_PC_REGNUM, &pc);
   return avr_make_iaddr (pc);
 }
 
diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c
index 705a6d3..62cb9a5 100644
--- a/gdb/gdbarch.c
+++ b/gdb/gdbarch.c
@@ -1906,7 +1906,7 @@ gdbarch_read_pc_p (struct gdbarch *gdbarch)
 }
 
 CORE_ADDR
-gdbarch_read_pc (struct gdbarch *gdbarch, struct regcache *regcache)
+gdbarch_read_pc (struct gdbarch *gdbarch, readable_regcache *regcache)
 {
   gdb_assert (gdbarch != NULL);
   gdb_assert (gdbarch->read_pc != NULL);
diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h
index 249ad61..30c2bf3 100644
--- a/gdb/gdbarch.h
+++ b/gdb/gdbarch.h
@@ -245,8 +245,8 @@ extern void set_gdbarch_char_signed (struct gdbarch *gdbarch, int char_signed);
 
 extern int gdbarch_read_pc_p (struct gdbarch *gdbarch);
 
-typedef CORE_ADDR (gdbarch_read_pc_ftype) (struct regcache *regcache);
-extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, struct regcache *regcache);
+typedef CORE_ADDR (gdbarch_read_pc_ftype) (readable_regcache *regcache);
+extern CORE_ADDR gdbarch_read_pc (struct gdbarch *gdbarch, readable_regcache *regcache);
 extern void set_gdbarch_read_pc (struct gdbarch *gdbarch, gdbarch_read_pc_ftype *read_pc);
 
 extern int gdbarch_write_pc_p (struct gdbarch *gdbarch);
diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh
index 8477dd7..10a2aa9 100755
--- a/gdb/gdbarch.sh
+++ b/gdb/gdbarch.sh
@@ -422,7 +422,7 @@ v;int;dwarf2_addr_size;;;sizeof (void*);0;gdbarch_ptr_bit (gdbarch) / TARGET_CHA
 # One if \`char' acts like \`signed char', zero if \`unsigned char'.
 v;int;char_signed;;;1;-1;1
 #
-F;CORE_ADDR;read_pc;struct regcache *regcache;regcache
+F;CORE_ADDR;read_pc;readable_regcache *regcache;regcache
 F;void;write_pc;struct regcache *regcache, CORE_ADDR val;regcache, val
 # Function for getting target's idea of a frame pointer.  FIXME: GDB's
 # whole scheme for dealing with "frames" and "frame pointers" needs a
diff --git a/gdb/hppa-tdep.c b/gdb/hppa-tdep.c
index cc9434e..84dbd66 100644
--- a/gdb/hppa-tdep.c
+++ b/gdb/hppa-tdep.c
@@ -1304,13 +1304,13 @@ hppa64_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr)
 }
 
 CORE_ADDR
-hppa_read_pc (struct regcache *regcache)
+hppa_read_pc (readable_regcache *regcache)
 {
   ULONGEST ipsw;
   ULONGEST pc;
 
-  regcache_cooked_read_unsigned (regcache, HPPA_IPSW_REGNUM, &ipsw);
-  regcache_cooked_read_unsigned (regcache, HPPA_PCOQ_HEAD_REGNUM, &pc);
+  regcache->cooked_read (HPPA_IPSW_REGNUM, &ipsw);
+  regcache->cooked_read (HPPA_PCOQ_HEAD_REGNUM, &pc);
 
   /* If the current instruction is nullified, then we are effectively
      still executing the previous instruction.  Pretend we are still
diff --git a/gdb/ia64-tdep.c b/gdb/ia64-tdep.c
index 6c9b341..4f02f05 100644
--- a/gdb/ia64-tdep.c
+++ b/gdb/ia64-tdep.c
@@ -876,13 +876,13 @@ ia64_breakpoint_from_pc (struct gdbarch *gdbarch,
 }
 
 static CORE_ADDR
-ia64_read_pc (struct regcache *regcache)
+ia64_read_pc (readable_regcache *regcache)
 {
   ULONGEST psr_value, pc_value;
   int slot_num;
 
-  regcache_cooked_read_unsigned (regcache, IA64_PSR_REGNUM, &psr_value);
-  regcache_cooked_read_unsigned (regcache, IA64_IP_REGNUM, &pc_value);
+  regcache->cooked_read (IA64_PSR_REGNUM, &psr_value);
+  regcache->cooked_read (IA64_IP_REGNUM, &pc_value);
   slot_num = (psr_value >> 41) & 3;
 
   return pc_value | (slot_num * SLOT_MULTIPLIER);
diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c
index 2c1a8f0..05f27a5 100644
--- a/gdb/mips-tdep.c
+++ b/gdb/mips-tdep.c
@@ -1362,12 +1362,12 @@ mips_in_frame_stub (CORE_ADDR pc)
    all registers should be sign extended for simplicity?  */
 
 static CORE_ADDR
-mips_read_pc (struct regcache *regcache)
+mips_read_pc (readable_regcache *regcache)
 {
   int regnum = gdbarch_pc_regnum (regcache->arch ());
   LONGEST pc;
 
-  regcache_cooked_read_signed (regcache, regnum, &pc);
+  regcache->cooked_read (regnum, &pc);
   return pc;
 }
 
diff --git a/gdb/spu-tdep.c b/gdb/spu-tdep.c
index a632c06..695b5cc 100644
--- a/gdb/spu-tdep.c
+++ b/gdb/spu-tdep.c
@@ -1176,11 +1176,12 @@ spu_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
 }
 
 static CORE_ADDR
-spu_read_pc (struct regcache *regcache)
+spu_read_pc (readable_regcache *regcache)
 {
   struct gdbarch_tdep *tdep = gdbarch_tdep (regcache->arch ());
   ULONGEST pc;
-  regcache_cooked_read_unsigned (regcache, SPU_PC_REGNUM, &pc);
+
+  regcache->cooked_read (SPU_PC_REGNUM, &pc);
   /* Mask off interrupt enable bit.  */
   return SPUADDR (tdep->id, pc & -4);
 }
