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9c5ea4d965
(register_cached): Remove. (set_register_cached): Remove. (deprecated_registers_fetched): Remove. (registers_changed): Use regcache_invalidate instead of set_register_cached. (regcache_raw_read): Update comment. * regcache.h (regcache_invalidate): Add prototype. (register_cached): Remove. (set_register_cached): Remove. (deprecated_registers_fetched): Remove. * findvar.c (value_of_register): Do not call register_cached. * frame.c (frame_register): Likewise. * tui/tui-regs.c (tui_get_register): Likewise. * remote.c (fetch_register_using_p): Do not call set_register_cached. (process_g_packet): Likewise. (remote_fetch_registers): Likewise. * remote-sim.c (gdbsim_fetch_register): Likewise. * mt-tdep.c (mt_select_coprocessor): Replace set_register_cached call by regcache_invalidate. (mt_pseudo_register_write): Likewise. * sh-tdep.c (sh_pseudo_register_write): Likewise. * corelow.c (get_core_registers): Replace deprecated_registers_fetched call by loop over regcache_raw_supply (..., NULL).
176 lines
6.8 KiB
C
176 lines
6.8 KiB
C
/* Cache and manage the values of registers for GDB, the GNU debugger.
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Copyright (C) 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000, 2001,
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2002, 2007 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#ifndef REGCACHE_H
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#define REGCACHE_H
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struct regcache;
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struct gdbarch;
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extern struct regcache *current_regcache;
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void regcache_xfree (struct regcache *regcache);
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struct cleanup *make_cleanup_regcache_xfree (struct regcache *regcache);
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struct regcache *regcache_xmalloc (struct gdbarch *gdbarch);
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/* Return REGCACHE's architecture. */
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extern struct gdbarch *get_regcache_arch (const struct regcache *regcache);
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/* Transfer a raw register [0..NUM_REGS) between core-gdb and the
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regcache. */
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void regcache_raw_read (struct regcache *regcache, int rawnum, gdb_byte *buf);
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void regcache_raw_write (struct regcache *regcache, int rawnum,
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const gdb_byte *buf);
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extern void regcache_raw_read_signed (struct regcache *regcache,
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int regnum, LONGEST *val);
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extern void regcache_raw_read_unsigned (struct regcache *regcache,
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int regnum, ULONGEST *val);
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extern void regcache_raw_write_signed (struct regcache *regcache,
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int regnum, LONGEST val);
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extern void regcache_raw_write_unsigned (struct regcache *regcache,
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int regnum, ULONGEST val);
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/* Partial transfer of a raw registers. These perform read, modify,
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write style operations. */
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void regcache_raw_read_part (struct regcache *regcache, int regnum,
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int offset, int len, gdb_byte *buf);
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void regcache_raw_write_part (struct regcache *regcache, int regnum,
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int offset, int len, const gdb_byte *buf);
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int regcache_valid_p (const struct regcache *regcache, int regnum);
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void regcache_invalidate (struct regcache *regcache, int regnum);
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/* Transfer a cooked register [0..NUM_REGS+NUM_PSEUDO_REGS). */
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void regcache_cooked_read (struct regcache *regcache, int rawnum,
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gdb_byte *buf);
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void regcache_cooked_write (struct regcache *regcache, int rawnum,
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const gdb_byte *buf);
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/* NOTE: cagney/2002-08-13: At present GDB has no reliable mechanism
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for indicating when a ``cooked'' register was constructed from
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invalid or unavailable ``raw'' registers. One fairly easy way of
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adding such a mechanism would be for the cooked functions to return
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a register valid indication. Given the possibility of such a
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change, the extract functions below use a reference parameter,
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rather than a function result. */
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/* Read a register as a signed/unsigned quantity. */
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extern void regcache_cooked_read_signed (struct regcache *regcache,
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int regnum, LONGEST *val);
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extern void regcache_cooked_read_unsigned (struct regcache *regcache,
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int regnum, ULONGEST *val);
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extern void regcache_cooked_write_signed (struct regcache *regcache,
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int regnum, LONGEST val);
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extern void regcache_cooked_write_unsigned (struct regcache *regcache,
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int regnum, ULONGEST val);
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/* Partial transfer of a cooked register. These perform read, modify,
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write style operations. */
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void regcache_cooked_read_part (struct regcache *regcache, int regnum,
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int offset, int len, gdb_byte *buf);
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void regcache_cooked_write_part (struct regcache *regcache, int regnum,
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int offset, int len, const gdb_byte *buf);
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/* Transfer a raw register [0..NUM_REGS) between the regcache and the
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target. These functions are called by the target in response to a
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target_fetch_registers() or target_store_registers(). */
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extern void regcache_raw_supply (struct regcache *regcache,
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int regnum, const void *buf);
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extern void regcache_raw_collect (const struct regcache *regcache,
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int regnum, void *buf);
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/* The register's ``offset''.
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FIXME: cagney/2002-11-07: The frame_register() function, when
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specifying the real location of a register, does so using that
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registers offset in the register cache. That offset is then used
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by valops.c to determine the location of the register. The code
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should instead use the register's number and a location expression
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to describe a value spread across multiple registers or memory. */
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extern int register_offset_hack (struct gdbarch *gdbarch, int regnum);
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/* The type of a register. This function is slightly more efficient
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then its gdbarch vector counterpart since it returns a precomputed
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value stored in a table. */
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extern struct type *register_type (struct gdbarch *gdbarch, int regnum);
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/* Return the size of register REGNUM. All registers should have only
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one size. */
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extern int register_size (struct gdbarch *gdbarch, int regnum);
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/* Save/restore a register cache. The set of registers saved /
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restored into the DST regcache determined by the save_reggroup /
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restore_reggroup respectively. COOKED_READ returns zero iff the
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register's value can't be returned. */
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typedef int (regcache_cooked_read_ftype) (void *src, int regnum,
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gdb_byte *buf);
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extern void regcache_save (struct regcache *dst,
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regcache_cooked_read_ftype *cooked_read,
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void *cooked_read_context);
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extern void regcache_restore (struct regcache *dst,
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regcache_cooked_read_ftype *cooked_read,
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void *cooked_read_context);
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/* Copy/duplicate the contents of a register cache. By default, the
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operation is pass-through. Writes to DST and reads from SRC will
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go through to the target.
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The ``cpy'' functions can not have overlapping SRC and DST buffers.
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``no passthrough'' versions do not go through to the target. They
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only transfer values already in the cache. */
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extern struct regcache *regcache_dup (struct regcache *regcache);
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extern struct regcache *regcache_dup_no_passthrough (struct regcache *regcache);
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extern void regcache_cpy (struct regcache *dest, struct regcache *src);
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extern void regcache_cpy_no_passthrough (struct regcache *dest, struct regcache *src);
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extern void registers_changed (void);
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/* Rename to read_unsigned_register()? */
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extern ULONGEST read_register (int regnum);
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/* Rename to read_unsigned_register_pid()? */
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extern ULONGEST read_register_pid (int regnum, ptid_t ptid);
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extern void write_register (int regnum, LONGEST val);
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extern void write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid);
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#endif /* REGCACHE_H */
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