X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fregcache.h;h=1a4ff4248a84f618e3f853d467ba9f64241b1158;hb=73e6209faecc21516a981ed86a27b259f506098c;hp=5ca7babad67e8ad4a6c1993037ae32e58151a9bd;hpb=68365089fc7e8091f6b10a724a499f0e405721d4;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/regcache.h b/gdb/regcache.h index 5ca7babad6..1a4ff4248a 100644 --- a/gdb/regcache.h +++ b/gdb/regcache.h @@ -1,13 +1,12 @@ /* 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) 1986-2016 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or + the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -16,102 +15,203 @@ GNU General Public License for more details. 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. */ + along with this program. If not, see . */ #ifndef REGCACHE_H #define REGCACHE_H +#include "common-regcache.h" + struct regcache; +struct regset; struct gdbarch; +struct address_space; -extern struct regcache *current_regcache; +extern struct regcache *get_current_regcache (void); +extern struct regcache *get_thread_regcache (ptid_t ptid); +extern struct regcache *get_thread_arch_regcache (ptid_t, struct gdbarch *); +extern struct regcache *get_thread_arch_aspace_regcache (ptid_t, + 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 regcache *regcache_xmalloc (struct gdbarch *gdbarch, + struct address_space *aspace); + +/* 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); /* Transfer a raw register [0..NUM_REGS) between core-gdb and the - regcache. */ + regcache. The read variants return the status of the register. */ -void regcache_raw_read (struct regcache *regcache, int rawnum, void *buf); +enum register_status regcache_raw_read (struct regcache *regcache, + int rawnum, gdb_byte *buf); void regcache_raw_write (struct regcache *regcache, int rawnum, - const void *buf); -int regcache_valid_p (struct regcache *regcache, int regnum); -CORE_ADDR regcache_raw_read_as_address (struct regcache *regcache, int rawnum); + const gdb_byte *buf); +extern enum register_status + regcache_raw_read_signed (struct regcache *regcache, + int regnum, LONGEST *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 raw registers. These perform read, modify, + write style operations. The read variant returns the status of the + register. */ + +extern enum register_status + 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); + +void regcache_invalidate (struct regcache *regcache, int regnum); + +/* Transfer of pseudo-registers. The read variants return a register + status, as an indication of when a ``cooked'' register was + constructed from valid, invalid or unavailable ``raw'' + registers. */ /* Transfer a cooked register [0..NUM_REGS+NUM_PSEUDO_REGS). */ -void regcache_cooked_read (struct regcache *regcache, int rawnum, void *buf); +enum register_status regcache_cooked_read (struct regcache *regcache, + int rawnum, gdb_byte *buf); void regcache_cooked_write (struct regcache *regcache, int rawnum, - const void *buf); + const gdb_byte *buf); + +/* Read register REGNUM from REGCACHE and return a new value. This + will call mark_value_bytes_unavailable as appropriate. */ + +struct value *regcache_cooked_read_value (struct regcache *regcache, + int regnum); + +/* Read a register as a signed/unsigned quantity. */ +extern enum register_status + regcache_cooked_read_signed (struct regcache *regcache, + int regnum, LONGEST *val); +extern enum register_status + 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. */ + +enum register_status 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); + +/* Special routines to read/write the PC. */ + +/* For regcache_read_pc see common/common-regcache.h. */ +extern void regcache_write_pc (struct regcache *regcache, CORE_ADDR pc); /* 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, const void *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); +/* Mapping between register numbers and offsets in a buffer, for use + in the '*regset' functions below. In an array of + 'regcache_map_entry' each element is interpreted like follows: -/* DEPRECATED: Character array containing an image of the inferior - programs' registers for the most recently referenced thread. */ + - If 'regno' is a register number: Map register 'regno' to the + current offset (starting with 0) and increase the current offset + by 'size' (or the register's size, if 'size' is zero). Repeat + this with consecutive register numbers up to 'regno+count-1'. -extern char *registers; + - If 'regno' is REGCACHE_MAP_SKIP: Add 'count*size' to the current + offset. -/* DEPRECATED: Character array containing the current state of each - register (unavailable<0, invalid=0, valid>0) for the most recently - referenced thread. */ + - If count=0: End of the map. */ -extern signed char *register_valid; +struct regcache_map_entry +{ + int count; + int regno; + int size; +}; -/* 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. +/* Special value for the 'regno' field in the struct above. */ - The ``cpy'' functions can not have overlapping SRC and DST buffers. +enum + { + REGCACHE_MAP_SKIP = -1, + }; - ``no passthrough'' versions do not go through to the target. They - only transfer values already in the cache. */ +/* Transfer a set of registers (as described by REGSET) between + REGCACHE and BUF. If REGNUM == -1, transfer all registers + belonging to the regset, otherwise just the register numbered + REGNUM. The REGSET's 'regmap' field must point to an array of + 'struct regcache_map_entry'. -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); + These functions are suitable for the 'regset_supply' and + 'regset_collect' fields in a regset structure. */ -extern char *deprecated_grub_regcache_for_registers (struct regcache *); -extern char *deprecated_grub_regcache_for_register_valid (struct regcache *); +extern void regcache_supply_regset (const struct regset *regset, + struct regcache *regcache, + int regnum, const void *buf, + size_t size); +extern void regcache_collect_regset (const struct regset *regset, + const struct regcache *regcache, + int regnum, void *buf, size_t size); -extern int register_cached (int regnum); -extern void set_register_cached (int regnum, int state); +/* 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 register_changed (int regnum); +extern struct type *register_type (struct gdbarch *gdbarch, int regnum); -extern void registers_changed (void); -extern void registers_fetched (void); +/* Return the size of register REGNUM. All registers should have only + one size. */ + +extern int register_size (struct gdbarch *gdbarch, int regnum); -extern void read_register_bytes (int regbyte, char *myaddr, int len); -extern void read_register_gen (int regnum, char *myaddr); +/* 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. */ -extern void write_register_gen (int regnum, char *myaddr); +typedef enum register_status (regcache_cooked_read_ftype) (void *src, + int regnum, + gdb_byte *buf); -extern void write_register_bytes (int regbyte, char *myaddr, int len); +extern void regcache_save (struct regcache *dst, + regcache_cooked_read_ftype *cooked_read, + void *cooked_read_context); -/* Rename to read_unsigned_register()? */ -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); +/* 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. -extern LONGEST read_signed_register_pid (int regnum, ptid_t ptid); + regcache_cpy can not have overlapping SRC and DST buffers. */ -extern void write_register (int regnum, LONGEST val); +extern struct regcache *regcache_dup (struct regcache *regcache); +extern void regcache_cpy (struct regcache *dest, struct regcache *src); -extern void write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid); +extern void registers_changed (void); +extern void registers_changed_ptid (ptid_t); #endif /* REGCACHE_H */