/* Cache and manage the values of registers for GDB, the GNU debugger.
- Copyright (C) 1986-2017 Free Software Foundation, Inc.
+ Copyright (C) 1986-2018 Free Software Foundation, Inc.
This file is part of GDB.
#define REGCACHE_H
#include "common-regcache.h"
+#include <forward_list>
struct regcache;
struct regset;
struct gdbarch *,
struct address_space *);
-void regcache_xfree (struct regcache *regcache);
-struct cleanup *make_cleanup_regcache_xfree (struct regcache *regcache);
-struct regcache *regcache_xmalloc (struct gdbarch *gdbarch,
- struct address_space *aspace);
-
/* Return REGCACHE's ptid. */
extern ptid_t regcache_get_ptid (const struct regcache *regcache);
-/* Return REGCACHE's architecture. */
-
-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 *);
-
enum register_status regcache_register_status (const struct regcache *regcache,
int regnum);
/* Set a raw register's value in the regcache's buffer. Unlike
regcache_raw_write, this is not write-through. The intention is
allowing to change the buffer contents of a read-only regcache
- allocated with regcache_xmalloc. */
+ allocated with new. */
extern void regcache_raw_set_cached_value
(struct regcache *regcache, int regnum, const gdb_byte *buf);
regcache_dump_remote
};
+/* A (register_number, register_value) pair. */
+
+typedef struct cached_reg
+{
+ int num;
+ gdb_byte *data;
+} cached_reg_t;
+
/* The register cache for storing raw register values. */
class regcache
{
public:
- regcache (gdbarch *gdbarch, address_space *aspace_)
- : regcache (gdbarch, aspace_, true)
+ regcache (gdbarch *gdbarch)
+ : regcache (gdbarch, nullptr, true)
{}
struct readonly_t {};
/* Create a readonly regcache from a non-readonly regcache. */
regcache (readonly_t, const regcache &src);
- regcache (const regcache &) = delete;
- void operator= (const regcache &) = delete;
+ DISABLE_COPY_AND_ASSIGN (regcache);
~regcache ()
{
xfree (m_register_status);
}
+ /* Return regcache's architecture. */
gdbarch *arch () const;
- address_space *aspace () const
+ /* Return REGCACHE's address space. */
+ const address_space *aspace () const
{
return m_aspace;
}
void cooked_write (int regnum, const gdb_byte *buf);
enum register_status raw_read (int regnum, gdb_byte *buf);
- void raw_write (int regnum, const gdb_byte *buf);
-
- enum register_status raw_read_signed (int regnum, LONGEST *val);
- void raw_write_signed (int regnum, LONGEST val);
+ void raw_write (int regnum, const gdb_byte *buf);
- enum register_status raw_read_unsigned (int regnum, ULONGEST *val);
+ template<typename T, typename = RequireLongest<T>>
+ enum register_status raw_read (int regnum, T *val);
- void raw_write_unsigned (int regnum, ULONGEST val);
+ template<typename T, typename = RequireLongest<T>>
+ void raw_write (int regnum, T val);
struct value *cooked_read_value (int regnum);
- enum register_status cooked_read_signed (int regnum, LONGEST *val);
-
- void cooked_write_signed (int regnum, LONGEST val);
-
- enum register_status cooked_read_unsigned (int regnum, ULONGEST *val);
+ template<typename T, typename = RequireLongest<T>>
+ enum register_status cooked_read (int regnum, T *val);
- void cooked_write_unsigned (int regnum, ULONGEST val);
+ template<typename T, typename = RequireLongest<T>>
+ void cooked_write (int regnum, T val);
void raw_update (int regnum);
void raw_collect (int regnum, void *buf) const;
+ void raw_collect_integer (int regnum, gdb_byte *addr, int addr_len,
+ bool is_signed) const;
+
void raw_supply (int regnum, const void *buf);
+ void raw_supply_integer (int regnum, const gdb_byte *addr, int addr_len,
+ bool is_signed);
+
void raw_supply_zeroed (int regnum);
enum register_status get_register_status (int regnum) const;
debug. */
void debug_print_register (const char *func, int regno);
-private:
- regcache (gdbarch *gdbarch, address_space *aspace_, bool readonly_p_);
+ static void regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid);
+protected:
+ regcache (gdbarch *gdbarch, const address_space *aspace_, bool readonly_p_);
+
+ int num_raw_registers () const;
+ static std::forward_list<regcache *> current_regcache;
+
+private:
gdb_byte *register_buffer (int regnum) const;
void restore (struct regcache *src);
- void cpy_no_passthrough (struct regcache *src);
-
enum register_status xfer_part (int regnum, int offset, int len, void *in,
- const void *out,
- decltype (regcache_raw_read) read,
- decltype (regcache_raw_write) write);
+ const void *out, bool is_raw);
void transfer_regset (const struct regset *regset,
struct regcache *out_regcache,
int regnum, const void *in_buf,
void *out_buf, size_t size) const;
+ /* Assert on the range of REGNUM. */
+ void assert_regnum (int regnum) const;
+
struct regcache_descr *m_descr;
/* The address space of this register cache (for registers where it
makes sense, like PC or SP). */
- struct address_space *m_aspace;
+ const address_space * const m_aspace;
/* The register buffers. A read-only register cache can hold the
full [0 .. gdbarch_num_regs + gdbarch_num_pseudo_regs) while a read/write
cache can only be updated via the methods regcache_dup() and
regcache_cpy(). The actual contents are determined by the
reggroup_save and reggroup_restore methods. */
- bool m_readonly_p;
+ const bool m_readonly_p;
/* If this is a read-write cache, which thread's registers is
it connected to? */
ptid_t m_ptid;
get_thread_arch_aspace_regcache (ptid_t ptid, struct gdbarch *gdbarch,
struct address_space *aspace);
+ friend void
+ registers_changed_ptid (ptid_t ptid);
+
friend void
regcache_cpy (struct regcache *dst, struct regcache *src);
};
-/* 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. See also regcache_cpy_no_passthrough.
-
- regcache_cpy can not have overlapping SRC and DST buffers. */
-
+/* Duplicate the contents of a register cache to a read-only register
+ cache. The operation is pass-through. */
extern struct regcache *regcache_dup (struct regcache *regcache);
+
+/* Writes to DEST will go through to the target. SRC is a read-only
+ register cache. */
extern void regcache_cpy (struct regcache *dest, struct regcache *src);
extern void registers_changed (void);
projects / deliverable / binutils-gdb.git / blobdiff