X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fregcache.h;h=4ced1fcd79b9b6fdce6ba8dd31063f0ff5f00170;hb=d98a0826249cfa81146382408be8fc59b141cb52;hp=cb5754ba618f61023651540d0d25a2ee078f490f;hpb=b6ba6518e9254bc25f88088228e93ac966ebccd1;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/regcache.h b/gdb/regcache.h index cb5754ba61..4ced1fcd79 100644 --- a/gdb/regcache.h +++ b/gdb/regcache.h @@ -1,6 +1,7 @@ /* Cache and manage the values of registers for GDB, the GNU debugger. - Copyright 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000, 2001 - Free Software Foundation, Inc. + + Copyright (C) 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000, 2001, + 2002, 2007 Free Software Foundation, Inc. This file is part of GDB. @@ -16,56 +17,159 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. */ #ifndef REGCACHE_H #define REGCACHE_H -/* Character array containing an image of the inferior programs' - registers. */ +struct regcache; +struct gdbarch; -extern char *registers; +extern struct regcache *current_regcache; -/* Character array containing the current state of each register - (unavailable<0, invalid=0, valid>0). */ +void regcache_xfree (struct regcache *regcache); +struct cleanup *make_cleanup_regcache_xfree (struct regcache *regcache); +struct regcache *regcache_xmalloc (struct gdbarch *gdbarch); -extern signed char *register_valid; +/* Return REGCACHE's architecture. */ -extern int register_cached (int regnum); +extern struct gdbarch *get_regcache_arch (const struct regcache *regcache); -extern void set_register_cached (int regnum, int state); +/* Transfer a raw register [0..NUM_REGS) between core-gdb and the + regcache. */ -extern void register_changed (int regnum); +void regcache_raw_read (struct regcache *regcache, int rawnum, gdb_byte *buf); +void regcache_raw_write (struct regcache *regcache, int rawnum, + const gdb_byte *buf); +extern void regcache_raw_read_signed (struct regcache *regcache, + int regnum, LONGEST *val); +extern void regcache_raw_read_unsigned (struct regcache *regcache, + int regnum, ULONGEST *val); +extern void regcache_raw_write_signed (struct regcache *regcache, + int regnum, LONGEST val); +extern void regcache_raw_write_unsigned (struct regcache *regcache, + int regnum, ULONGEST val); -extern char *register_buffer (int regnum); +/* Partial transfer of a raw registers. These perform read, modify, + write style operations. */ -extern void registers_changed (void); +void regcache_raw_read_part (struct regcache *regcache, int regnum, + int offset, int len, gdb_byte *buf); +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). */ +void regcache_cooked_read (struct regcache *regcache, int rawnum, + gdb_byte *buf); +void regcache_cooked_write (struct regcache *regcache, int rawnum, + const gdb_byte *buf); + +/* NOTE: cagney/2002-08-13: At present GDB has no reliable mechanism + for indicating when a ``cooked'' register was constructed from + invalid or unavailable ``raw'' registers. One fairly easy way of + adding such a mechanism would be for the cooked functions to return + a register valid indication. Given the possibility of such a + change, the extract functions below use a reference parameter, + rather than a function result. */ + +/* Read a register as a signed/unsigned quantity. */ +extern void regcache_cooked_read_signed (struct regcache *regcache, + int regnum, LONGEST *val); +extern void regcache_cooked_read_unsigned (struct regcache *regcache, + int regnum, ULONGEST *val); +extern void regcache_cooked_write_signed (struct regcache *regcache, + int regnum, LONGEST val); +extern void regcache_cooked_write_unsigned (struct regcache *regcache, + int regnum, ULONGEST val); + +/* Partial transfer of a cooked register. These perform read, modify, + write style operations. */ + +void regcache_cooked_read_part (struct regcache *regcache, int regnum, + int offset, int len, gdb_byte *buf); +void regcache_cooked_write_part (struct regcache *regcache, int regnum, + int offset, int len, const gdb_byte *buf); + +/* Transfer a raw register [0..NUM_REGS) between the regcache and the + target. These functions are called by the target in response to a + target_fetch_registers() or target_store_registers(). */ + +extern void regcache_raw_supply (struct regcache *regcache, + int regnum, const void *buf); +extern void regcache_raw_collect (const struct regcache *regcache, + int regnum, void *buf); + + +/* The register's ``offset''. + + FIXME: cagney/2002-11-07: The frame_register() function, when + specifying the real location of a register, does so using that + registers offset in the register cache. That offset is then used + by valops.c to determine the location of the register. The code + should instead use the register's number and a location expression + to describe a value spread across multiple registers or memory. */ + +extern int register_offset_hack (struct gdbarch *gdbarch, int regnum); -extern void registers_fetched (void); -extern void read_register_bytes (int regbyte, char *myaddr, int len); +/* The type of a register. This function is slightly more efficient + then its gdbarch vector counterpart since it returns a precomputed + value stored in a table. */ -extern void read_register_gen (int regnum, char *myaddr); +extern struct type *register_type (struct gdbarch *gdbarch, int regnum); -extern void write_register_gen (int regnum, char *myaddr); -extern void write_register_bytes (int regbyte, char *myaddr, int len); +/* Return the size of register REGNUM. All registers should have only + one size. */ + +extern int register_size (struct gdbarch *gdbarch, int regnum); + + +/* Save/restore a register cache. The set of registers saved / + restored into the DST regcache determined by the save_reggroup / + restore_reggroup respectively. COOKED_READ returns zero iff the + register's value can't be returned. */ + +typedef int (regcache_cooked_read_ftype) (void *src, int regnum, + gdb_byte *buf); + +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. + + ``no passthrough'' versions do not go through to the target. They + 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 registers_changed (void); + /* Rename to read_unsigned_register()? */ extern ULONGEST read_register (int regnum); /* Rename to read_unsigned_register_pid()? */ -extern ULONGEST read_register_pid (int regnum, int pid); - -extern LONGEST read_signed_register (int regnum); - -extern LONGEST read_signed_register_pid (int regnum, int pid); +extern ULONGEST read_register_pid (int regnum, ptid_t ptid); extern void write_register (int regnum, LONGEST val); -extern void write_register_pid (int regnum, CORE_ADDR val, int pid); - -extern void supply_register (int regnum, char *val); +extern void write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid); #endif /* REGCACHE_H */