X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fregcache.h;h=3708c86d640c90d40cd19dfcb053530e5dea6ebe;hb=65743aba62ae276dfb203e8771201e912545b0b5;hp=6af729a40ff6b83c14179ff30ab0ad389a26b6cb;hpb=0ed04cce6d6d1d4eaf7f92896c12b18bc284fe17;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/regcache.h b/gdb/regcache.h index 6af729a40f..3708c86d64 100644 --- a/gdb/regcache.h +++ b/gdb/regcache.h @@ -1,13 +1,13 @@ /* 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, 2008, 2009, 2010, 2011 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, @@ -16,94 +16,158 @@ 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 struct regcache; 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 *); 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); -/* Transfer a raw register [0..NUM_REGS) between core-gdb and the - regcache. */ +/* Return REGCACHE's architecture. */ -void regcache_raw_read (struct regcache *regcache, int rawnum, void *buf); -void regcache_raw_write (struct regcache *regcache, int rawnum, - const void *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 struct gdbarch *get_regcache_arch (const struct regcache *regcache); -/* Partial transfer of a raw registers. These perform read, modify, - write style operations. */ +/* Return REGCACHE's address space. */ + +extern struct address_space *get_regcache_aspace (const struct regcache *); + +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, + + /* The register value is valid and cached. */ + REG_VALID = 1, + + /* 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 + }; + +enum register_status regcache_register_status (const struct regcache *regcache, + int regnum); -void regcache_raw_read_part (struct regcache *regcache, int regnum, - int offset, int len, void *buf); +/* 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 void *buf); + int offset, int len, const gdb_byte *buf); + +void regcache_invalidate (struct regcache *regcache, int regnum); -int regcache_valid_p (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); - -/* 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. */ + const gdb_byte *buf); /* 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 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. */ -void regcache_cooked_read_part (struct regcache *regcache, int regnum, - int offset, int len, void *buf); +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 void *buf); + 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 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); + +/* 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. */ -/* Return the size of the largest register. Used when allocating - space for an aribtrary register value. */ +extern struct type *register_type (struct gdbarch *gdbarch, int regnum); -extern int max_register_size (struct gdbarch *gdbarch); +/* 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 an image of the inferior - programs' registers for the most recently referenced thread. */ -extern char *registers; +/* 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. */ -/* DEPRECATED: Character array containing the current state of each - register (unavailable<0, invalid=0, valid>0) for the most recently - referenced thread. */ +typedef enum register_status (regcache_cooked_read_ftype) (void *src, + int regnum, + gdb_byte *buf); -extern signed char *register_valid; +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 @@ -115,43 +179,11 @@ extern signed char *register_valid; only transfer values already in the cache. */ 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); - -extern char *deprecated_grub_regcache_for_registers (struct regcache *); -extern char *deprecated_grub_regcache_for_register_valid (struct regcache *); - -extern int register_cached (int regnum); - -extern void set_register_cached (int regnum, int state); - -extern void register_changed (int regnum); +extern void regcache_cpy_no_passthrough (struct regcache *dest, + struct regcache *src); 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); - -/* 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); +extern void registers_changed_ptid (ptid_t); #endif /* REGCACHE_H */