Add PowerPC64 ld --tls-get-addr-optimize.

[deliverable/binutils-gdb.git] / gdb / regcache.h

diff --git a/gdb/regcache.h b/gdb/regcache.h
index 3708c86d640c90d40cd19dfcb053530e5dea6ebe..a9fb44bf8ab36f092668c545df9e2fc627e36d25 100644 (file)
--- a/gdb/regcache.h
+++ b/gdb/regcache.h
@@ -1,7 +1,6 @@
 /* Cache and manage the values of registers for GDB, the GNU debugger.
 
-   Copyright (C) 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000, 2001,
-   2002, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+   Copyright (C) 1986-2015 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -21,13 +20,19 @@
 #ifndef REGCACHE_H
 #define REGCACHE_H
 
+#include "common-regcache.h"
+
 struct regcache;
+struct regset;
 struct gdbarch;
 struct address_space;
 
 extern struct regcache *get_current_regcache (void);
 extern struct regcache *get_thread_regcache (ptid_t ptid);
 extern struct regcache *get_thread_arch_regcache (ptid_t, struct gdbarch *);
+extern struct regcache *get_thread_arch_aspace_regcache (ptid_t,
+                                                        struct gdbarch *,
+                                                        struct address_space *);
 
 void regcache_xfree (struct regcache *regcache);
 struct cleanup *make_cleanup_regcache_xfree (struct regcache *regcache);
@@ -104,6 +109,12 @@ enum register_status regcache_cooked_read (struct regcache *regcache,
 void regcache_cooked_write (struct regcache *regcache, int rawnum,
                            const gdb_byte *buf);
 
+/* Read register REGNUM from REGCACHE and return a new value.  This
+   will call mark_value_bytes_unavailable as appropriate.  */
+
+struct value *regcache_cooked_read_value (struct regcache *regcache,
+                                         int regnum);
+
 /* Read a register as a signed/unsigned quantity.  */
 extern enum register_status
   regcache_cooked_read_signed (struct regcache *regcache,
@@ -127,7 +138,7 @@ void regcache_cooked_write_part (struct regcache *regcache, int regnum,
 
 /* Special routines to read/write the PC.  */
 
-extern CORE_ADDR regcache_read_pc (struct regcache *regcache);
+/* For regcache_read_pc see common/common-regcache.h.  */
 extern void regcache_write_pc (struct regcache *regcache, CORE_ADDR pc);
 
 /* Transfer a raw register [0..NUM_REGS) between the regcache and the
@@ -139,6 +150,51 @@ extern void regcache_raw_supply (struct regcache *regcache,
 extern void regcache_raw_collect (const struct regcache *regcache,
                                  int regnum, void *buf);
 
+/* Mapping between register numbers and offsets in a buffer, for use
+   in the '*regset' functions below.  In an array of
+   'regcache_map_entry' each element is interpreted like follows:
+
+   - If 'regno' is a register number: Map register 'regno' to the
+     current offset (starting with 0) and increase the current offset
+     by 'size' (or the register's size, if 'size' is zero).  Repeat
+     this with consecutive register numbers up to 'regno+count-1'.
+
+   - If 'regno' is REGCACHE_MAP_SKIP: Add 'count*size' to the current
+     offset.
+
+   - If count=0: End of the map.  */
+
+struct regcache_map_entry
+{
+  int count;
+  int regno;
+  int size;
+};
+
+/* Special value for the 'regno' field in the struct above.  */
+
+enum
+  {
+    REGCACHE_MAP_SKIP = -1,
+  };
+
+/* Transfer a set of registers (as described by REGSET) between
+   REGCACHE and BUF.  If REGNUM == -1, transfer all registers
+   belonging to the regset, otherwise just the register numbered
+   REGNUM.  The REGSET's 'regmap' field must point to an array of
+   'struct regcache_map_entry'.
+
+   These functions are suitable for the 'regset_supply' and
+   'regset_collect' fields in a regset structure.  */
+
+extern void regcache_supply_regset (const struct regset *regset,
+                                   struct regcache *regcache,
+                                   int regnum, const void *buf,
+                                   size_t size);
+extern void regcache_collect_regset (const struct regset *regset,
+                                    const struct regcache *regcache,
+                                    int regnum, void *buf, size_t size);
+
 
 /* The type of a register.  This function is slightly more efficient
    then its gdbarch vector counterpart since it returns a precomputed
@@ -165,23 +221,15 @@ typedef enum register_status (regcache_cooked_read_ftype) (void *src,
 extern void regcache_save (struct regcache *dst,
                           regcache_cooked_read_ftype *cooked_read,
                           void *cooked_read_context);
-extern void regcache_restore (struct regcache *dst,
-                             regcache_cooked_read_ftype *cooked_read,
-                             void *cooked_read_context);
 
 /* Copy/duplicate the contents of a register cache.  By default, the
    operation is pass-through.  Writes to DST and reads from SRC will
-   go through to the target.
-
-   The ``cpy'' functions can not have overlapping SRC and DST buffers.
+   go through to the target.  See also regcache_cpy_no_passthrough.
 
-   ``no passthrough'' versions do not go through to the target.  They
-   only transfer values already in the cache.  */
+   regcache_cpy can not have overlapping SRC and DST buffers.  */
 
 extern struct regcache *regcache_dup (struct regcache *regcache);
 extern void regcache_cpy (struct regcache *dest, struct regcache *src);
-extern void regcache_cpy_no_passthrough (struct regcache *dest,
-                                        struct regcache *src);
 
 extern void registers_changed (void);
 extern void registers_changed_ptid (ptid_t);