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(regcache_xmalloc): Initialize it. (regcache_cpy_no_passthrough): Do not refer to current_regcache. (regcache_dup): Likewise. (regcache_dup_no_passthrough): Likewise. (current_regcache): Make static. (registers_ptid): Remove variable. (get_thread_regcache): New function. (get_current_regcache): New function. (registers_changed): Implement by freeing current regcache. (regcache_raw_read): Do not refer to current_regcache. Set inferior_ptid to regcache->ptid while calling target routines. (regcache_raw_write): Likewise. (regcache_raw_supply): Do not refer to current_regcache. (read_pc_pid): Use thread regcache. Do not modify inferior_ptid. (write_pc_pid): Likewise. (build_regcache): Remove. (_initialize_regcache): Do not call DEPRECATED_REGISTER_GDBARCH_SWAP or deprecated_register_gdbarch_swap. Do not initialize registers_ptid. * regcache.h (get_current_regcache): Add prototype. (get_thread_regcache): Likewise. (current_regcache): Remove declaration. * corelow.c (core_open): Replace current_regcache by get_current_regcache (). * frame.c (frame_pop): Likewise. (put_frame_register): Likewise. (get_current_frame, create_new_frame): Likewise. * mi/mi-main.c (mi_cmd_data_write_register_values): Likewise. * stack.c (return_command): Likewise. * infcall.c (call_function_by_hand): Likewise. * infrun.c (resume): Likewise. (save_inferior_status, restore_inferior_status): Likewise. * linux-fork.c (fork_load_infrun_state): Likewise. (fork_save_infrun_state): Likewise. * win32-nat.c (win32_resume): Likewise. * i386fbsd-nat.c (i386fbsd_resume): Likewise. * monitor.c (monitor_wait): Likewise. * remote.c (remote_wait): Likewise. * remote-mips.c (mips_wait): Likewise. * bsd-kvm.c (bsd_kvm_open): Likewise (bsd_kvm_proc_cmd, bsd_kvm_pcb_cmd): Likewise. * fbsd-nat.c (fbsd_make_corefile_notes): Likewise. * i386-linux-nat.c (i386_linux_resume): Likewise. * ia64-linux-nat.c (ia64_linux_insert_watchpoint): Likewise. (ia64_linux_stopped_data_address): Likewise. * frv-tdep.c (frv_fdpic_loadmap_addresses): Likewise. * m32c-tdep.c (m32c_virtual_frame_pointer): Likewise. * mep-tdep.c (current_me_module, current_options): Likewise. * mips-tdep.c (deprecated_mips_set_processor_regs_hack): Likewise. * linux-nat.c (linux_nat_do_thread_registers): Use thread regcache instead of current_regcache. Call target_fetch_registers. (linux_nat_corefile_thread_callback): Update call site. (linux_nat_do_registers): Likewise. * procfs.c (procfs_do_thread_registers): Use thread regcache instead of current_regcache. (procfs_make_note_section): Likewise. * proc-service.c (ps_lgetregs, ps_lsetregs): Likewise. (ps_lgetfpregs, ps_lsetfpregs): Likewise. * sol-thread.c (ps_lgetregs, ps_lsetregs): Likewise. (ps_lgetfpregs, ps_lsetfpregs): Likewise.
165 lines
6.6 KiB
C
165 lines
6.6 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 *get_current_regcache (void);
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extern struct regcache *get_thread_regcache (ptid_t ptid);
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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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#endif /* REGCACHE_H */
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