X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fregcache.h;h=8423f57e0eb19fa6da240ef05081f7b3702551d4;hb=40c1a0073715c1e3f93afc83edac8396eb362a98;hp=dbffb5792e927c5acc4cb69e5e32c9f19c7c3013;hpb=61a0eb5b8e81215b3d3d7be207315572af3fe8a8;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/regcache.h b/gdb/regcache.h index dbffb5792e..8423f57e0e 100644 --- a/gdb/regcache.h +++ b/gdb/regcache.h @@ -1,12 +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 - Free Software Foundation, Inc. + + Copyright (C) 1986-2014 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, @@ -15,67 +15,180 @@ 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 -/* Transfer a raw register [0..NUM_REGS) between core-gdb and the - regcache. */ - -void regcache_read (int rawnum, char *buf); -void regcache_write (int rawnum, char *buf); - -/* DEPRECATED: Character array containing an image of the inferior - programs' registers for the most recently referenced thread. */ - -extern char *registers; - -/* DEPRECATED: Character array containing the current state of each - register (unavailable<0, invalid=0, valid>0) for the most recently - referenced thread. */ +struct regcache; +struct gdbarch; +struct address_space; -extern signed char *register_valid; +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 *); -extern int register_cached (int regnum); +void regcache_xfree (struct regcache *regcache); +struct cleanup *make_cleanup_regcache_xfree (struct regcache *regcache); +struct regcache *regcache_xmalloc (struct gdbarch *gdbarch, + struct address_space *aspace); -extern void set_register_cached (int regnum, int state); +/* Return REGCACHE's architecture. */ -extern void register_changed (int regnum); +extern struct gdbarch *get_regcache_arch (const struct regcache *regcache); -/* DEPRECATED: Functional interface returning pointer into registers[] - array. */ +/* Return REGCACHE's address space. */ -extern char *register_buffer (int regnum); +extern struct address_space *get_regcache_aspace (const struct regcache *); -extern void registers_changed (void); - -extern void registers_fetched (void); - -extern void read_register_bytes (int regbyte, char *myaddr, int len); +enum register_status + { + /* The register value is not in the cache, and we don't know yet + whether it's available in the target (or traceframe). */ + REG_UNKNOWN = 0, -extern void read_register_gen (int regnum, char *myaddr); + /* The register value is valid and cached. */ + REG_VALID = 1, -extern void write_register_gen (int regnum, char *myaddr); + /* The register value is unavailable. E.g., we're inspecting a + traceframe, and this register wasn't collected. Note that this + is different a different "unavailable" from saying the register + does not exist in the target's architecture --- in that case, + the target should have given us a target description that does + not include the register in the first place. */ + REG_UNAVAILABLE = -1 + }; -extern void write_register_bytes (int regbyte, char *myaddr, int len); +enum register_status regcache_register_status (const struct regcache *regcache, + int regnum); -/* 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); +/* Transfer a raw register [0..NUM_REGS) between core-gdb and the + regcache. The read variants return the status of the register. */ + +enum register_status 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 enum register_status + regcache_raw_read_signed (struct regcache *regcache, + int regnum, LONGEST *val); +extern enum register_status + 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 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). */ +enum register_status regcache_cooked_read (struct regcache *regcache, + int rawnum, gdb_byte *buf); +void regcache_cooked_write (struct regcache *regcache, int rawnum, + 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. */ + +extern CORE_ADDR regcache_read_pc (struct regcache *regcache); +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 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 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); + + +/* 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 enum register_status (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 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. -extern LONGEST read_signed_register_pid (int regnum, int pid); + The ``cpy'' functions can not have overlapping SRC and DST buffers. -extern void write_register (int regnum, LONGEST val); + ``no passthrough'' versions do not go through to the target. They + only transfer values already in the cache. */ -extern void write_register_pid (int regnum, CORE_ADDR val, int pid); +extern struct regcache *regcache_dup (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 supply_register (int regnum, char *val); +extern void registers_changed (void); +extern void registers_changed_ptid (ptid_t); #endif /* REGCACHE_H */