sim: common: trim trailing whitespace

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

diff --git a/gdb/regcache.h b/gdb/regcache.h
index f675717772902275e5573c7e1ee78f38048c8da5..7ae585ab2c455f1c073650612f8e124729b749b6 100644 (file)
--- a/gdb/regcache.h
+++ b/gdb/regcache.h
@@ -40,10 +40,31 @@ extern struct gdbarch *get_regcache_arch (const struct regcache *regcache);
 
 /* Return REGCACHE's address space.  */
 
-extern struct address_space *get_regcache_aspace (const struct regcache *regcache);
+extern struct address_space *get_regcache_aspace (const struct regcache *);
+
+enum register_status
+  {
+    /* The register value is not in the cache, and we don't know yet
+       whether it's available in the target (or traceframe).  */
+    REG_UNKNOWN = 0,
+
+    /* The register value is valid and cached.  */
+    REG_VALID = 1,
+
+    /* The register value is unavailable.  E.g., we're inspecting a
+       traceframe, and this register wasn't collected.  Note that this
+       is different a different "unavailable" from saying the register
+       does not exist in the target's architecture --- in that case,
+       the target should have given us a target description that does
+       not include the register in the first place.  */
+    REG_UNAVAILABLE = -1
+  };
+
+enum register_status regcache_register_status (const struct regcache *regcache,
+                                              int regnum);
 
 /* Transfer a raw register [0..NUM_REGS) between core-gdb and the
-   regcache. */
+   regcache.  */
 
 void regcache_raw_read (struct regcache *regcache, int rawnum, gdb_byte *buf);
 void regcache_raw_write (struct regcache *regcache, int rawnum,
@@ -65,8 +86,6 @@ void regcache_raw_read_part (struct regcache *regcache, int regnum,
 void regcache_raw_write_part (struct regcache *regcache, int regnum,
                              int offset, int len, const gdb_byte *buf);
 
-int regcache_valid_p (const struct regcache *regcache, int regnum);
-
 void regcache_invalidate (struct regcache *regcache, int regnum);
 
 /* Transfer a cooked register [0..NUM_REGS+NUM_PSEUDO_REGS).  */
@@ -154,9 +173,9 @@ extern void regcache_restore (struct regcache *dst,
    only transfer values already in the cache.  */
 
 extern struct regcache *regcache_dup (struct regcache *regcache);
-extern struct regcache *regcache_dup_no_passthrough (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 regcache_cpy_no_passthrough (struct regcache *dest,
+                                        struct regcache *src);
 
 extern void registers_changed (void);
 extern void registers_changed_ptid (ptid_t);