gdb: Don't skip prologue for explicit line breakpoints in assembler

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

diff --git a/gdb/common/common-regcache.h b/gdb/common/common-regcache.h
index c47060374a3e827316b7ae1af736512b0e121bd7..95ce64a91f968ca911891f80eb523e3c89b71c16 100644 (file)
--- a/gdb/common/common-regcache.h
+++ b/gdb/common/common-regcache.h
@@ -1,6 +1,6 @@
 /* Cache and manage the values of registers
 
-   Copyright (C) 2014-2015 Free Software Foundation, Inc.
+   Copyright (C) 2014-2019 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -17,11 +17,29 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#ifndef COMMON_REGCACHE_H
-#define COMMON_REGCACHE_H
+#ifndef COMMON_COMMON_REGCACHE_H
+#define COMMON_COMMON_REGCACHE_H
 
 /* This header is a stopgap until we have an independent regcache.  */
 
+enum register_status : signed char
+  {
+    /* 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
+  };
+
 /* Return a pointer to the register cache associated with the
    thread specified by PTID.  This function must be provided by
    the client.  */
@@ -38,4 +56,30 @@ extern int regcache_register_size (const struct regcache *regcache, int n);
 
 extern CORE_ADDR regcache_read_pc (struct regcache *regcache);
 
-#endif /* COMMON_REGCACHE_H */
+/* Read a raw register into a unsigned integer.  */
+extern enum register_status regcache_raw_read_unsigned
+  (struct regcache *regcache, int regnum, ULONGEST *val);
+
+ULONGEST regcache_raw_get_unsigned (struct regcache *regcache, int regnum);
+
+struct reg_buffer_common
+{
+  virtual ~reg_buffer_common () = default;
+
+  /* Get the availability status of the value of register REGNUM in this
+     buffer.  */
+  virtual register_status get_register_status (int regnum) const = 0;
+
+  /* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE.  */
+  virtual void raw_supply (int regnum, const void *buf) = 0;
+
+  /* Collect register REGNUM from REGCACHE and store its contents in BUF.  */
+  virtual void raw_collect (int regnum, void *buf) const = 0;
+
+  /* Compare the contents of the register stored in the regcache (ignoring the
+     first OFFSET bytes) to the contents of BUF (without any offset).  Returns
+     true if the same.  */
+  virtual bool raw_compare (int regnum, const void *buf, int offset) const = 0;
+};
+
+#endif /* COMMON_COMMON_REGCACHE_H */