Automatic date update in version.in

[platform/upstream/binutils.git] / gdb / regcache.c

diff --git a/gdb/regcache.c b/gdb/regcache.c
index 506067f..e6b6f89 100644 (file)
--- a/gdb/regcache.c
+++ b/gdb/regcache.c
@@ -24,11 +24,10 @@
 #include "gdbcmd.h"
 #include "regcache.h"
 #include "reggroups.h"
-#include <string.h>
 #include "observer.h"
-#include "exceptions.h"
 #include "remote.h"
 #include "valprint.h"
+#include "regset.h"
 
 /*
  * DATA STRUCTURE
@@ -536,6 +535,13 @@ get_current_regcache (void)
   return get_thread_regcache (inferior_ptid);
 }
 
+/* See common/common-regcache.h.  */
+
+struct regcache *
+get_thread_regcache_for_ptid (ptid_t ptid)
+{
+  return get_thread_regcache (ptid);
+}
 
 /* Observer for the target_changed event.  */
 
@@ -1067,6 +1073,92 @@ regcache_raw_collect (const struct regcache *regcache, int regnum, void *buf)
   memcpy (buf, regbuf, size);
 }
 
+/* Transfer a single or all registers belonging to a certain register
+   set to or from a buffer.  This is the main worker function for
+   regcache_supply_regset and regcache_collect_regset.  */
+
+static void
+regcache_transfer_regset (const struct regset *regset,
+                         const struct regcache *regcache,
+                         struct regcache *out_regcache,
+                         int regnum, const void *in_buf,
+                         void *out_buf, size_t size)
+{
+  const struct regcache_map_entry *map;
+  int offs = 0, count;
+
+  for (map = regset->regmap; (count = map->count) != 0; map++)
+    {
+      int regno = map->regno;
+      int slot_size = map->size;
+
+      if (slot_size == 0 && regno != REGCACHE_MAP_SKIP)
+       slot_size = regcache->descr->sizeof_register[regno];
+
+      if (regno == REGCACHE_MAP_SKIP
+         || (regnum != -1
+             && (regnum < regno || regnum >= regno + count)))
+         offs += count * slot_size;
+
+      else if (regnum == -1)
+       for (; count--; regno++, offs += slot_size)
+         {
+           if (offs + slot_size > size)
+             break;
+
+           if (out_buf)
+             regcache_raw_collect (regcache, regno,
+                                   (gdb_byte *) out_buf + offs);
+           else
+             regcache_raw_supply (out_regcache, regno, in_buf
+                                  ? (const gdb_byte *) in_buf + offs
+                                  : NULL);
+         }
+      else
+       {
+         /* Transfer a single register and return.  */
+         offs += (regnum - regno) * slot_size;
+         if (offs + slot_size > size)
+           return;
+
+         if (out_buf)
+           regcache_raw_collect (regcache, regnum,
+                                 (gdb_byte *) out_buf + offs);
+         else
+           regcache_raw_supply (out_regcache, regnum, in_buf
+                                ? (const gdb_byte *) in_buf + offs
+                                : NULL);
+         return;
+       }
+    }
+}
+
+/* Supply register REGNUM from BUF to REGCACHE, using the register map
+   in REGSET.  If REGNUM is -1, do this for all registers in REGSET.
+   If BUF is NULL, set the register(s) to "unavailable" status. */
+
+void
+regcache_supply_regset (const struct regset *regset,
+                       struct regcache *regcache,
+                       int regnum, const void *buf, size_t size)
+{
+  regcache_transfer_regset (regset, regcache, regcache, regnum,
+                           buf, NULL, size);
+}
+
+/* Collect register REGNUM from REGCACHE to BUF, using the register
+   map in REGSET.  If REGNUM is -1, do this for all registers in
+   REGSET.  */
+
+void
+regcache_collect_regset (const struct regset *regset,
+                        const struct regcache *regcache,
+                        int regnum, void *buf, size_t size)
+{
+  regcache_transfer_regset (regset, regcache, NULL, regnum,
+                           NULL, buf, size);
+}
+
 
 /* Special handling for register PC.  */