X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fregcache.h;h=fc24559e4dd191940ce954ed620d7a393433e8f3;hb=8776bb8aa5a46ecab041559e96d5a10538710275;hp=108b3faa6b45db22d9bf430b8d130e18491878b3;hpb=36160dc4b2bf0b2f8341f8f017ea606adfcac332;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/regcache.h b/gdb/regcache.h index 108b3faa6b..fc24559e4d 100644 --- a/gdb/regcache.h +++ b/gdb/regcache.h @@ -1,7 +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, 2002 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. @@ -17,8 +17,8 @@ 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 @@ -32,32 +32,116 @@ void regcache_xfree (struct regcache *regcache); struct cleanup *make_cleanup_regcache_xfree (struct regcache *regcache); struct regcache *regcache_xmalloc (struct gdbarch *gdbarch); +/* Return REGCACHE's architecture. */ + +extern struct gdbarch *get_regcache_arch (const struct regcache *regcache); + /* Transfer a raw register [0..NUM_REGS) between core-gdb and the regcache. */ -void regcache_read (struct regcache *regcache, int rawnum, char *buf); -void regcache_write (struct regcache *regcache, int rawnum, char *buf); +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); + +/* Partial transfer of a raw registers. These perform read, modify, + write style operations. */ + +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 (struct regcache *regcache, int regnum); -CORE_ADDR regcache_read_as_address (struct regcache *regcache, int rawnum); + +/* 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 supply_register (int regnum, char *val); -extern void regcache_collect (int regnum, void *buf); +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); + + +/* 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 struct type *register_type (struct gdbarch *gdbarch, int regnum); -/* DEPRECATED: Character array containing an image of the inferior - programs' registers for the most recently referenced thread. */ -extern char *registers; +/* Return the size of register REGNUM. All registers should have only + one size. */ + +extern int register_size (struct gdbarch *gdbarch, int regnum); -/* DEPRECATED: Character array containing the current state of each - register (unavailable<0, invalid=0, valid>0) for the most recently - referenced thread. */ -extern signed char *register_valid; +/* 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 @@ -73,26 +157,33 @@ 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 char *deprecated_grub_regcache_for_registers (struct regcache *); -extern char *deprecated_grub_regcache_for_register_valid (struct regcache *); +/* NOTE: cagney/2002-11-02: The below have been superseded by the + regcache_cooked_*() functions found above, and the frame_*() + functions found in "frame.h". Take care though, often more than a + simple substitution is required when updating the code. The + change, as far as practical, should avoid adding references to + global variables (e.g., current_regcache, current_frame, + current_gdbarch or the selected frame) and instead refer to + the FRAME or REGCACHE that has been passed into the containing + function as parameters. Consequently, the change typically + involves modifying the containing function so that it takes a FRAME + or REGCACHE parameter. In the case of an architecture vector + method, there should already be a non-deprecated variant that is + parameterized with FRAME or REGCACHE. */ + +extern void deprecated_read_register_gen (int regnum, gdb_byte *myaddr); +extern void deprecated_write_register_gen (int regnum, gdb_byte *myaddr); + +/* NOTE: cagney/2002-11-05: This function has been superseeded by + regcache_raw_supply(). */ +extern void deprecated_registers_fetched (void); extern int register_cached (int regnum); extern void set_register_cached (int regnum, int state); -extern void register_changed (int regnum); - extern void registers_changed (void); -extern void registers_fetched (void); - -extern void read_register_bytes (int regbyte, char *myaddr, int len); - -extern void read_register_gen (int regnum, char *myaddr); - -extern void write_register_gen (int regnum, char *myaddr); - -extern void write_register_bytes (int regbyte, char *myaddr, int len); /* Rename to read_unsigned_register()? */ extern ULONGEST read_register (int regnum); @@ -100,10 +191,6 @@ extern ULONGEST read_register (int regnum); /* Rename to read_unsigned_register_pid()? */ extern ULONGEST read_register_pid (int regnum, ptid_t ptid); -extern LONGEST read_signed_register (int regnum); - -extern LONGEST read_signed_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, ptid_t ptid);