2d522557c6
* regcache.h (regcache_raw_read, regcache_raw_write) (regcache_raw_read_part, regcache_raw_write_part) (regcache_cooked_read_part, regcache_cooked_write_part) (regcache_cooked_read, regcache_cooked_write) (regcache_raw_supply, regcache_raw_collect) (regcache_cooked_read_ftype, regcache_save, regcache_restore) (deprecated_read_register_gen, deprecated_write_register_gen) (deprecated_read_register_bytes, deprecated_write_register_bytes) (deprecated_grub_regcache_for_registers): Use gdb_byte for byte buffer parameters. * ia64-tdep.c (ia64_extract_return_value): Update. * frame.c (do_frame_register_read): Update. * regcache.c (deprecated_grub_regcache_for_registers) (struct regcache, regcache_save, regcache_restore, regcache_cpy) (do_cooked_read, regcache_xmalloc, register_buffer) (deprecated_read_register_bytes, regcache_raw_read) (regcache_raw_read_signed, regcache_raw_read_unsigned) (deprecated_read_register_gen, regcache_cooked_read) (regcache_cooked_read_signed, regcache_cooked_read_unsigned) (deprecated_write_register_gen, regcache_cooked_write) (deprecated_write_register_bytes, regcache_raw_read_part) (regcache_raw_write_part, regcache_cooked_read_part) (regcache_cooked_write_part, read_register, regcache_raw_supply):
1449 lines
44 KiB
C
1449 lines
44 KiB
C
/* Cache and manage the values of registers for GDB, the GNU debugger.
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Copyright 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000,
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2001, 2002, 2004 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., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "inferior.h"
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#include "target.h"
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#include "gdbarch.h"
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#include "gdbcmd.h"
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#include "regcache.h"
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#include "reggroups.h"
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#include "gdb_assert.h"
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#include "gdb_string.h"
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#include "gdbcmd.h" /* For maintenanceprintlist. */
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#include "observer.h"
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/*
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* DATA STRUCTURE
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*
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* Here is the actual register cache.
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*/
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/* Per-architecture object describing the layout of a register cache.
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Computed once when the architecture is created */
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struct gdbarch_data *regcache_descr_handle;
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struct regcache_descr
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{
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/* The architecture this descriptor belongs to. */
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struct gdbarch *gdbarch;
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/* The raw register cache. Each raw (or hard) register is supplied
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by the target interface. The raw cache should not contain
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redundant information - if the PC is constructed from two
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registers then those registers and not the PC lives in the raw
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cache. */
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int nr_raw_registers;
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long sizeof_raw_registers;
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long sizeof_raw_register_valid_p;
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/* The cooked register space. Each cooked register in the range
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[0..NR_RAW_REGISTERS) is direct-mapped onto the corresponding raw
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register. The remaining [NR_RAW_REGISTERS
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.. NR_COOKED_REGISTERS) (a.k.a. pseudo registers) are mapped onto
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both raw registers and memory by the architecture methods
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gdbarch_pseudo_register_read and gdbarch_pseudo_register_write. */
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int nr_cooked_registers;
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long sizeof_cooked_registers;
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long sizeof_cooked_register_valid_p;
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/* Offset and size (in 8 bit bytes), of reach register in the
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register cache. All registers (including those in the range
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[NR_RAW_REGISTERS .. NR_COOKED_REGISTERS) are given an offset.
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Assigning all registers an offset makes it possible to keep
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legacy code, such as that found in read_register_bytes() and
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write_register_bytes() working. */
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long *register_offset;
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long *sizeof_register;
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/* Cached table containing the type of each register. */
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struct type **register_type;
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};
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static void *
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init_regcache_descr (struct gdbarch *gdbarch)
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{
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int i;
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struct regcache_descr *descr;
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gdb_assert (gdbarch != NULL);
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/* Create an initial, zero filled, table. */
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descr = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct regcache_descr);
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descr->gdbarch = gdbarch;
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/* Total size of the register space. The raw registers are mapped
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directly onto the raw register cache while the pseudo's are
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either mapped onto raw-registers or memory. */
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descr->nr_cooked_registers = NUM_REGS + NUM_PSEUDO_REGS;
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descr->sizeof_cooked_register_valid_p = NUM_REGS + NUM_PSEUDO_REGS;
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/* Fill in a table of register types. */
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descr->register_type
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= GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, struct type *);
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for (i = 0; i < descr->nr_cooked_registers; i++)
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descr->register_type[i] = gdbarch_register_type (gdbarch, i);
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/* Construct a strictly RAW register cache. Don't allow pseudo's
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into the register cache. */
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descr->nr_raw_registers = NUM_REGS;
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/* FIXME: cagney/2002-08-13: Overallocate the register_valid_p
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array. This pretects GDB from erant code that accesses elements
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of the global register_valid_p[] array in the range [NUM_REGS
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.. NUM_REGS + NUM_PSEUDO_REGS). */
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descr->sizeof_raw_register_valid_p = descr->sizeof_cooked_register_valid_p;
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/* Lay out the register cache.
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NOTE: cagney/2002-05-22: Only register_type() is used when
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constructing the register cache. It is assumed that the
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register's raw size, virtual size and type length are all the
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same. */
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{
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long offset = 0;
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descr->sizeof_register
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= GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long);
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descr->register_offset
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= GDBARCH_OBSTACK_CALLOC (gdbarch, descr->nr_cooked_registers, long);
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for (i = 0; i < descr->nr_cooked_registers; i++)
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{
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descr->sizeof_register[i] = TYPE_LENGTH (descr->register_type[i]);
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descr->register_offset[i] = offset;
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offset += descr->sizeof_register[i];
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gdb_assert (MAX_REGISTER_SIZE >= descr->sizeof_register[i]);
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}
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/* Set the real size of the register cache buffer. */
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descr->sizeof_cooked_registers = offset;
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}
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/* FIXME: cagney/2002-05-22: Should only need to allocate space for
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the raw registers. Unfortunately some code still accesses the
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register array directly using the global registers[]. Until that
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code has been purged, play safe and over allocating the register
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buffer. Ulgh! */
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descr->sizeof_raw_registers = descr->sizeof_cooked_registers;
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return descr;
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}
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static struct regcache_descr *
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regcache_descr (struct gdbarch *gdbarch)
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{
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return gdbarch_data (gdbarch, regcache_descr_handle);
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}
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/* Utility functions returning useful register attributes stored in
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the regcache descr. */
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struct type *
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register_type (struct gdbarch *gdbarch, int regnum)
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{
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struct regcache_descr *descr = regcache_descr (gdbarch);
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gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
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return descr->register_type[regnum];
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}
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/* Utility functions returning useful register attributes stored in
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the regcache descr. */
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int
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register_size (struct gdbarch *gdbarch, int regnum)
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{
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struct regcache_descr *descr = regcache_descr (gdbarch);
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int size;
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gdb_assert (regnum >= 0 && regnum < (NUM_REGS + NUM_PSEUDO_REGS));
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size = descr->sizeof_register[regnum];
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return size;
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}
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/* The register cache for storing raw register values. */
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struct regcache
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{
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struct regcache_descr *descr;
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/* The register buffers. A read-only register cache can hold the
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full [0 .. NUM_REGS + NUM_PSEUDO_REGS) while a read/write
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register cache can only hold [0 .. NUM_REGS). */
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gdb_byte *registers;
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gdb_byte *register_valid_p;
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/* Is this a read-only cache? A read-only cache is used for saving
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the target's register state (e.g, across an inferior function
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call or just before forcing a function return). A read-only
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cache can only be updated via the methods regcache_dup() and
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regcache_cpy(). The actual contents are determined by the
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reggroup_save and reggroup_restore methods. */
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int readonly_p;
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};
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struct regcache *
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regcache_xmalloc (struct gdbarch *gdbarch)
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{
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struct regcache_descr *descr;
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struct regcache *regcache;
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gdb_assert (gdbarch != NULL);
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descr = regcache_descr (gdbarch);
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regcache = XMALLOC (struct regcache);
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regcache->descr = descr;
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regcache->registers
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= XCALLOC (descr->sizeof_raw_registers, gdb_byte);
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regcache->register_valid_p
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= XCALLOC (descr->sizeof_raw_register_valid_p, gdb_byte);
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regcache->readonly_p = 1;
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return regcache;
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}
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void
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regcache_xfree (struct regcache *regcache)
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{
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if (regcache == NULL)
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return;
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xfree (regcache->registers);
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xfree (regcache->register_valid_p);
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xfree (regcache);
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}
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static void
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do_regcache_xfree (void *data)
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{
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regcache_xfree (data);
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}
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struct cleanup *
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make_cleanup_regcache_xfree (struct regcache *regcache)
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{
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return make_cleanup (do_regcache_xfree, regcache);
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}
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/* Return REGCACHE's architecture. */
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struct gdbarch *
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get_regcache_arch (const struct regcache *regcache)
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{
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return regcache->descr->gdbarch;
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}
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/* Return a pointer to register REGNUM's buffer cache. */
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static gdb_byte *
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register_buffer (const struct regcache *regcache, int regnum)
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{
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return regcache->registers + regcache->descr->register_offset[regnum];
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}
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void
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regcache_save (struct regcache *dst, regcache_cooked_read_ftype *cooked_read,
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void *src)
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{
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struct gdbarch *gdbarch = dst->descr->gdbarch;
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gdb_byte buf[MAX_REGISTER_SIZE];
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int regnum;
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/* The DST should be `read-only', if it wasn't then the save would
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end up trying to write the register values back out to the
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target. */
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gdb_assert (dst->readonly_p);
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/* Clear the dest. */
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memset (dst->registers, 0, dst->descr->sizeof_cooked_registers);
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memset (dst->register_valid_p, 0, dst->descr->sizeof_cooked_register_valid_p);
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/* Copy over any registers (identified by their membership in the
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save_reggroup) and mark them as valid. The full [0 .. NUM_REGS +
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NUM_PSEUDO_REGS) range is checked since some architectures need
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to save/restore `cooked' registers that live in memory. */
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for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++)
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{
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if (gdbarch_register_reggroup_p (gdbarch, regnum, save_reggroup))
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{
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int valid = cooked_read (src, regnum, buf);
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if (valid)
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{
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memcpy (register_buffer (dst, regnum), buf,
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register_size (gdbarch, regnum));
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dst->register_valid_p[regnum] = 1;
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}
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}
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}
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}
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void
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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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{
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struct gdbarch *gdbarch = dst->descr->gdbarch;
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gdb_byte buf[MAX_REGISTER_SIZE];
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int regnum;
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/* The dst had better not be read-only. If it is, the `restore'
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doesn't make much sense. */
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gdb_assert (!dst->readonly_p);
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/* Copy over any registers, being careful to only restore those that
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were both saved and need to be restored. The full [0 .. NUM_REGS
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+ NUM_PSEUDO_REGS) range is checked since some architectures need
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to save/restore `cooked' registers that live in memory. */
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for (regnum = 0; regnum < dst->descr->nr_cooked_registers; regnum++)
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{
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if (gdbarch_register_reggroup_p (gdbarch, regnum, restore_reggroup))
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{
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int valid = cooked_read (cooked_read_context, regnum, buf);
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if (valid)
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regcache_cooked_write (dst, regnum, buf);
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}
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}
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}
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static int
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do_cooked_read (void *src, int regnum, gdb_byte *buf)
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{
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struct regcache *regcache = src;
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if (!regcache->register_valid_p[regnum] && regcache->readonly_p)
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/* Don't even think about fetching a register from a read-only
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cache when the register isn't yet valid. There isn't a target
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from which the register value can be fetched. */
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return 0;
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regcache_cooked_read (regcache, regnum, buf);
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return 1;
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}
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void
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regcache_cpy (struct regcache *dst, struct regcache *src)
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{
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int i;
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gdb_byte *buf;
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gdb_assert (src != NULL && dst != NULL);
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gdb_assert (src->descr->gdbarch == dst->descr->gdbarch);
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gdb_assert (src != dst);
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gdb_assert (src->readonly_p || dst->readonly_p);
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if (!src->readonly_p)
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regcache_save (dst, do_cooked_read, src);
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else if (!dst->readonly_p)
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regcache_restore (dst, do_cooked_read, src);
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else
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regcache_cpy_no_passthrough (dst, src);
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}
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void
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regcache_cpy_no_passthrough (struct regcache *dst, struct regcache *src)
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{
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int i;
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gdb_assert (src != NULL && dst != NULL);
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gdb_assert (src->descr->gdbarch == dst->descr->gdbarch);
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/* NOTE: cagney/2002-05-17: Don't let the caller do a no-passthrough
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move of data into the current_regcache(). Doing this would be
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silly - it would mean that valid_p would be completely invalid. */
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gdb_assert (dst != current_regcache);
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memcpy (dst->registers, src->registers, dst->descr->sizeof_raw_registers);
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memcpy (dst->register_valid_p, src->register_valid_p,
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dst->descr->sizeof_raw_register_valid_p);
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}
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struct regcache *
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regcache_dup (struct regcache *src)
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{
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struct regcache *newbuf;
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gdb_assert (current_regcache != NULL);
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newbuf = regcache_xmalloc (src->descr->gdbarch);
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regcache_cpy (newbuf, src);
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return newbuf;
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}
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struct regcache *
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regcache_dup_no_passthrough (struct regcache *src)
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{
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struct regcache *newbuf;
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gdb_assert (current_regcache != NULL);
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newbuf = regcache_xmalloc (src->descr->gdbarch);
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regcache_cpy_no_passthrough (newbuf, src);
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return newbuf;
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}
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int
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regcache_valid_p (struct regcache *regcache, int regnum)
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{
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gdb_assert (regcache != NULL);
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gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
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return regcache->register_valid_p[regnum];
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}
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gdb_byte *
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deprecated_grub_regcache_for_registers (struct regcache *regcache)
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{
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return regcache->registers;
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}
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/* Global structure containing the current regcache. */
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/* FIXME: cagney/2002-05-11: The two global arrays registers[] and
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deprecated_register_valid[] currently point into this structure. */
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struct regcache *current_regcache;
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/* NOTE: this is a write-through cache. There is no "dirty" bit for
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recording if the register values have been changed (eg. by the
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user). Therefore all registers must be written back to the
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target when appropriate. */
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/* The thread/process associated with the current set of registers. */
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static ptid_t registers_ptid;
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/*
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* FUNCTIONS:
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*/
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/* REGISTER_CACHED()
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Returns 0 if the value is not in the cache (needs fetch).
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>0 if the value is in the cache.
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<0 if the value is permanently unavailable (don't ask again). */
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int
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register_cached (int regnum)
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{
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return current_regcache->register_valid_p[regnum];
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}
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/* Record that REGNUM's value is cached if STATE is >0, uncached but
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fetchable if STATE is 0, and uncached and unfetchable if STATE is <0. */
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void
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set_register_cached (int regnum, int state)
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{
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gdb_assert (regnum >= 0);
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gdb_assert (regnum < current_regcache->descr->nr_raw_registers);
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current_regcache->register_valid_p[regnum] = state;
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}
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/* Observer for the target_changed event. */
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void
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regcache_observer_target_changed (struct target_ops *target)
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{
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registers_changed ();
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}
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/* Low level examining and depositing of registers.
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The caller is responsible for making sure that the inferior is
|
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stopped before calling the fetching routines, or it will get
|
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garbage. (a change from GDB version 3, in which the caller got the
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value from the last stop). */
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/* REGISTERS_CHANGED ()
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Indicate that registers may have changed, so invalidate the cache. */
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|
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void
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registers_changed (void)
|
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{
|
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int i;
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registers_ptid = pid_to_ptid (-1);
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|
|
/* Force cleanup of any alloca areas if using C alloca instead of
|
|
a builtin alloca. This particular call is used to clean up
|
|
areas allocated by low level target code which may build up
|
|
during lengthy interactions between gdb and the target before
|
|
gdb gives control to the user (ie watchpoints). */
|
|
alloca (0);
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|
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for (i = 0; i < current_regcache->descr->nr_raw_registers; i++)
|
|
set_register_cached (i, 0);
|
|
|
|
if (deprecated_registers_changed_hook)
|
|
deprecated_registers_changed_hook ();
|
|
}
|
|
|
|
/* DEPRECATED_REGISTERS_FETCHED ()
|
|
|
|
Indicate that all registers have been fetched, so mark them all valid. */
|
|
|
|
/* FIXME: cagney/2001-12-04: This function is DEPRECATED. The target
|
|
code was blatting the registers[] array and then calling this.
|
|
Since targets should only be using regcache_raw_supply() the need for
|
|
this function/hack is eliminated. */
|
|
|
|
void
|
|
deprecated_registers_fetched (void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < NUM_REGS; i++)
|
|
set_register_cached (i, 1);
|
|
/* Do not assume that the pseudo-regs have also been fetched.
|
|
Fetching all real regs NEVER accounts for pseudo-regs. */
|
|
}
|
|
|
|
/* deprecated_read_register_bytes and deprecated_write_register_bytes
|
|
are generally a *BAD* idea. They are inefficient because they need
|
|
to check for partial updates, which can only be done by scanning
|
|
through all of the registers and seeing if the bytes that are being
|
|
read/written fall inside of an invalid register. [The main reason
|
|
this is necessary is that register sizes can vary, so a simple
|
|
index won't suffice.] It is far better to call read_register_gen
|
|
and write_register_gen if you want to get at the raw register
|
|
contents, as it only takes a regnum as an argument, and therefore
|
|
can't do a partial register update.
|
|
|
|
Prior to the recent fixes to check for partial updates, both read
|
|
and deprecated_write_register_bytes always checked to see if any
|
|
registers were stale, and then called target_fetch_registers (-1)
|
|
to update the whole set. This caused really slowed things down for
|
|
remote targets. */
|
|
|
|
/* Copy INLEN bytes of consecutive data from registers
|
|
starting with the INREGBYTE'th byte of register data
|
|
into memory at MYADDR. */
|
|
|
|
void
|
|
deprecated_read_register_bytes (int in_start, gdb_byte *in_buf, int in_len)
|
|
{
|
|
int in_end = in_start + in_len;
|
|
int regnum;
|
|
gdb_byte reg_buf[MAX_REGISTER_SIZE];
|
|
|
|
/* See if we are trying to read bytes from out-of-date registers. If so,
|
|
update just those registers. */
|
|
|
|
for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++)
|
|
{
|
|
int reg_start;
|
|
int reg_end;
|
|
int reg_len;
|
|
int start;
|
|
int end;
|
|
int byte;
|
|
|
|
reg_start = DEPRECATED_REGISTER_BYTE (regnum);
|
|
reg_len = register_size (current_gdbarch, regnum);
|
|
reg_end = reg_start + reg_len;
|
|
|
|
if (reg_end <= in_start || in_end <= reg_start)
|
|
/* The range the user wants to read doesn't overlap with regnum. */
|
|
continue;
|
|
|
|
if (REGISTER_NAME (regnum) != NULL && *REGISTER_NAME (regnum) != '\0')
|
|
/* Force the cache to fetch the entire register. */
|
|
deprecated_read_register_gen (regnum, reg_buf);
|
|
|
|
/* Legacy note: This function, for some reason, allows a NULL
|
|
input buffer. If the buffer is NULL, the registers are still
|
|
fetched, just the final transfer is skipped. */
|
|
if (in_buf == NULL)
|
|
continue;
|
|
|
|
/* start = max (reg_start, in_start) */
|
|
if (reg_start > in_start)
|
|
start = reg_start;
|
|
else
|
|
start = in_start;
|
|
|
|
/* end = min (reg_end, in_end) */
|
|
if (reg_end < in_end)
|
|
end = reg_end;
|
|
else
|
|
end = in_end;
|
|
|
|
/* Transfer just the bytes common to both IN_BUF and REG_BUF */
|
|
for (byte = start; byte < end; byte++)
|
|
{
|
|
in_buf[byte - in_start] = reg_buf[byte - reg_start];
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
regcache_raw_read (struct regcache *regcache, int regnum, gdb_byte *buf)
|
|
{
|
|
gdb_assert (regcache != NULL && buf != NULL);
|
|
gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
|
|
/* Make certain that the register cache is up-to-date with respect
|
|
to the current thread. This switching shouldn't be necessary
|
|
only there is still only one target side register cache. Sigh!
|
|
On the bright side, at least there is a regcache object. */
|
|
if (!regcache->readonly_p)
|
|
{
|
|
gdb_assert (regcache == current_regcache);
|
|
if (! ptid_equal (registers_ptid, inferior_ptid))
|
|
{
|
|
registers_changed ();
|
|
registers_ptid = inferior_ptid;
|
|
}
|
|
if (!register_cached (regnum))
|
|
target_fetch_registers (regnum);
|
|
#if 0
|
|
/* FIXME: cagney/2004-08-07: At present a number of targets
|
|
forget (or didn't know that they needed) to set this leading to
|
|
panics. Also is the problem that targets need to indicate
|
|
that a register is in one of the possible states: valid,
|
|
undefined, unknown. The last of which isn't yet
|
|
possible. */
|
|
gdb_assert (register_cached (regnum));
|
|
#endif
|
|
}
|
|
/* Copy the value directly into the register cache. */
|
|
memcpy (buf, register_buffer (regcache, regnum),
|
|
regcache->descr->sizeof_register[regnum]);
|
|
}
|
|
|
|
void
|
|
regcache_raw_read_signed (struct regcache *regcache, int regnum, LONGEST *val)
|
|
{
|
|
gdb_byte *buf;
|
|
gdb_assert (regcache != NULL);
|
|
gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
|
|
buf = alloca (regcache->descr->sizeof_register[regnum]);
|
|
regcache_raw_read (regcache, regnum, buf);
|
|
(*val) = extract_signed_integer (buf,
|
|
regcache->descr->sizeof_register[regnum]);
|
|
}
|
|
|
|
void
|
|
regcache_raw_read_unsigned (struct regcache *regcache, int regnum,
|
|
ULONGEST *val)
|
|
{
|
|
gdb_byte *buf;
|
|
gdb_assert (regcache != NULL);
|
|
gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
|
|
buf = alloca (regcache->descr->sizeof_register[regnum]);
|
|
regcache_raw_read (regcache, regnum, buf);
|
|
(*val) = extract_unsigned_integer (buf,
|
|
regcache->descr->sizeof_register[regnum]);
|
|
}
|
|
|
|
void
|
|
regcache_raw_write_signed (struct regcache *regcache, int regnum, LONGEST val)
|
|
{
|
|
void *buf;
|
|
gdb_assert (regcache != NULL);
|
|
gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers);
|
|
buf = alloca (regcache->descr->sizeof_register[regnum]);
|
|
store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val);
|
|
regcache_raw_write (regcache, regnum, buf);
|
|
}
|
|
|
|
void
|
|
regcache_raw_write_unsigned (struct regcache *regcache, int regnum,
|
|
ULONGEST val)
|
|
{
|
|
void *buf;
|
|
gdb_assert (regcache != NULL);
|
|
gdb_assert (regnum >=0 && regnum < regcache->descr->nr_raw_registers);
|
|
buf = alloca (regcache->descr->sizeof_register[regnum]);
|
|
store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val);
|
|
regcache_raw_write (regcache, regnum, buf);
|
|
}
|
|
|
|
void
|
|
deprecated_read_register_gen (int regnum, gdb_byte *buf)
|
|
{
|
|
gdb_assert (current_regcache != NULL);
|
|
gdb_assert (current_regcache->descr->gdbarch == current_gdbarch);
|
|
regcache_cooked_read (current_regcache, regnum, buf);
|
|
}
|
|
|
|
void
|
|
regcache_cooked_read (struct regcache *regcache, int regnum, gdb_byte *buf)
|
|
{
|
|
gdb_assert (regnum >= 0);
|
|
gdb_assert (regnum < regcache->descr->nr_cooked_registers);
|
|
if (regnum < regcache->descr->nr_raw_registers)
|
|
regcache_raw_read (regcache, regnum, buf);
|
|
else if (regcache->readonly_p
|
|
&& regnum < regcache->descr->nr_cooked_registers
|
|
&& regcache->register_valid_p[regnum])
|
|
/* Read-only register cache, perhaps the cooked value was cached? */
|
|
memcpy (buf, register_buffer (regcache, regnum),
|
|
regcache->descr->sizeof_register[regnum]);
|
|
else
|
|
gdbarch_pseudo_register_read (regcache->descr->gdbarch, regcache,
|
|
regnum, buf);
|
|
}
|
|
|
|
void
|
|
regcache_cooked_read_signed (struct regcache *regcache, int regnum,
|
|
LONGEST *val)
|
|
{
|
|
gdb_byte *buf;
|
|
gdb_assert (regcache != NULL);
|
|
gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers);
|
|
buf = alloca (regcache->descr->sizeof_register[regnum]);
|
|
regcache_cooked_read (regcache, regnum, buf);
|
|
(*val) = extract_signed_integer (buf,
|
|
regcache->descr->sizeof_register[regnum]);
|
|
}
|
|
|
|
void
|
|
regcache_cooked_read_unsigned (struct regcache *regcache, int regnum,
|
|
ULONGEST *val)
|
|
{
|
|
gdb_byte *buf;
|
|
gdb_assert (regcache != NULL);
|
|
gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_cooked_registers);
|
|
buf = alloca (regcache->descr->sizeof_register[regnum]);
|
|
regcache_cooked_read (regcache, regnum, buf);
|
|
(*val) = extract_unsigned_integer (buf,
|
|
regcache->descr->sizeof_register[regnum]);
|
|
}
|
|
|
|
void
|
|
regcache_cooked_write_signed (struct regcache *regcache, int regnum,
|
|
LONGEST val)
|
|
{
|
|
void *buf;
|
|
gdb_assert (regcache != NULL);
|
|
gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers);
|
|
buf = alloca (regcache->descr->sizeof_register[regnum]);
|
|
store_signed_integer (buf, regcache->descr->sizeof_register[regnum], val);
|
|
regcache_cooked_write (regcache, regnum, buf);
|
|
}
|
|
|
|
void
|
|
regcache_cooked_write_unsigned (struct regcache *regcache, int regnum,
|
|
ULONGEST val)
|
|
{
|
|
void *buf;
|
|
gdb_assert (regcache != NULL);
|
|
gdb_assert (regnum >=0 && regnum < regcache->descr->nr_cooked_registers);
|
|
buf = alloca (regcache->descr->sizeof_register[regnum]);
|
|
store_unsigned_integer (buf, regcache->descr->sizeof_register[regnum], val);
|
|
regcache_cooked_write (regcache, regnum, buf);
|
|
}
|
|
|
|
void
|
|
regcache_raw_write (struct regcache *regcache, int regnum,
|
|
const gdb_byte *buf)
|
|
{
|
|
gdb_assert (regcache != NULL && buf != NULL);
|
|
gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
|
|
gdb_assert (!regcache->readonly_p);
|
|
|
|
/* On the sparc, writing %g0 is a no-op, so we don't even want to
|
|
change the registers array if something writes to this register. */
|
|
if (CANNOT_STORE_REGISTER (regnum))
|
|
return;
|
|
|
|
/* Make certain that the correct cache is selected. */
|
|
gdb_assert (regcache == current_regcache);
|
|
if (! ptid_equal (registers_ptid, inferior_ptid))
|
|
{
|
|
registers_changed ();
|
|
registers_ptid = inferior_ptid;
|
|
}
|
|
|
|
/* If we have a valid copy of the register, and new value == old
|
|
value, then don't bother doing the actual store. */
|
|
if (regcache_valid_p (regcache, regnum)
|
|
&& (memcmp (register_buffer (regcache, regnum), buf,
|
|
regcache->descr->sizeof_register[regnum]) == 0))
|
|
return;
|
|
|
|
target_prepare_to_store ();
|
|
memcpy (register_buffer (regcache, regnum), buf,
|
|
regcache->descr->sizeof_register[regnum]);
|
|
regcache->register_valid_p[regnum] = 1;
|
|
target_store_registers (regnum);
|
|
}
|
|
|
|
void
|
|
deprecated_write_register_gen (int regnum, gdb_byte *buf)
|
|
{
|
|
gdb_assert (current_regcache != NULL);
|
|
gdb_assert (current_regcache->descr->gdbarch == current_gdbarch);
|
|
regcache_cooked_write (current_regcache, regnum, buf);
|
|
}
|
|
|
|
void
|
|
regcache_cooked_write (struct regcache *regcache, int regnum,
|
|
const gdb_byte *buf)
|
|
{
|
|
gdb_assert (regnum >= 0);
|
|
gdb_assert (regnum < regcache->descr->nr_cooked_registers);
|
|
if (regnum < regcache->descr->nr_raw_registers)
|
|
regcache_raw_write (regcache, regnum, buf);
|
|
else
|
|
gdbarch_pseudo_register_write (regcache->descr->gdbarch, regcache,
|
|
regnum, buf);
|
|
}
|
|
|
|
/* Copy INLEN bytes of consecutive data from memory at MYADDR
|
|
into registers starting with the MYREGSTART'th byte of register data. */
|
|
|
|
void
|
|
deprecated_write_register_bytes (int myregstart, gdb_byte *myaddr, int inlen)
|
|
{
|
|
int myregend = myregstart + inlen;
|
|
int regnum;
|
|
|
|
target_prepare_to_store ();
|
|
|
|
/* Scan through the registers updating any that are covered by the
|
|
range myregstart<=>myregend using write_register_gen, which does
|
|
nice things like handling threads, and avoiding updates when the
|
|
new and old contents are the same. */
|
|
|
|
for (regnum = 0; regnum < NUM_REGS + NUM_PSEUDO_REGS; regnum++)
|
|
{
|
|
int regstart, regend;
|
|
|
|
regstart = DEPRECATED_REGISTER_BYTE (regnum);
|
|
regend = regstart + register_size (current_gdbarch, regnum);
|
|
|
|
/* Is this register completely outside the range the user is writing? */
|
|
if (myregend <= regstart || regend <= myregstart)
|
|
/* do nothing */ ;
|
|
|
|
/* Is this register completely within the range the user is writing? */
|
|
else if (myregstart <= regstart && regend <= myregend)
|
|
deprecated_write_register_gen (regnum, myaddr + (regstart - myregstart));
|
|
|
|
/* The register partially overlaps the range being written. */
|
|
else
|
|
{
|
|
gdb_byte regbuf[MAX_REGISTER_SIZE];
|
|
/* What's the overlap between this register's bytes and
|
|
those the caller wants to write? */
|
|
int overlapstart = max (regstart, myregstart);
|
|
int overlapend = min (regend, myregend);
|
|
|
|
/* We may be doing a partial update of an invalid register.
|
|
Update it from the target before scribbling on it. */
|
|
deprecated_read_register_gen (regnum, regbuf);
|
|
|
|
target_store_registers (regnum);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Perform a partial register transfer using a read, modify, write
|
|
operation. */
|
|
|
|
typedef void (regcache_read_ftype) (struct regcache *regcache, int regnum,
|
|
void *buf);
|
|
typedef void (regcache_write_ftype) (struct regcache *regcache, int regnum,
|
|
const void *buf);
|
|
|
|
static void
|
|
regcache_xfer_part (struct regcache *regcache, int regnum,
|
|
int offset, int len, void *in, const void *out,
|
|
void (*read) (struct regcache *regcache, int regnum,
|
|
gdb_byte *buf),
|
|
void (*write) (struct regcache *regcache, int regnum,
|
|
const gdb_byte *buf))
|
|
{
|
|
struct regcache_descr *descr = regcache->descr;
|
|
gdb_byte reg[MAX_REGISTER_SIZE];
|
|
gdb_assert (offset >= 0 && offset <= descr->sizeof_register[regnum]);
|
|
gdb_assert (len >= 0 && offset + len <= descr->sizeof_register[regnum]);
|
|
/* Something to do? */
|
|
if (offset + len == 0)
|
|
return;
|
|
/* Read (when needed) ... */
|
|
if (in != NULL
|
|
|| offset > 0
|
|
|| offset + len < descr->sizeof_register[regnum])
|
|
{
|
|
gdb_assert (read != NULL);
|
|
read (regcache, regnum, reg);
|
|
}
|
|
/* ... modify ... */
|
|
if (in != NULL)
|
|
memcpy (in, reg + offset, len);
|
|
if (out != NULL)
|
|
memcpy (reg + offset, out, len);
|
|
/* ... write (when needed). */
|
|
if (out != NULL)
|
|
{
|
|
gdb_assert (write != NULL);
|
|
write (regcache, regnum, reg);
|
|
}
|
|
}
|
|
|
|
void
|
|
regcache_raw_read_part (struct regcache *regcache, int regnum,
|
|
int offset, int len, gdb_byte *buf)
|
|
{
|
|
struct regcache_descr *descr = regcache->descr;
|
|
gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers);
|
|
regcache_xfer_part (regcache, regnum, offset, len, buf, NULL,
|
|
regcache_raw_read, regcache_raw_write);
|
|
}
|
|
|
|
void
|
|
regcache_raw_write_part (struct regcache *regcache, int regnum,
|
|
int offset, int len, const gdb_byte *buf)
|
|
{
|
|
struct regcache_descr *descr = regcache->descr;
|
|
gdb_assert (regnum >= 0 && regnum < descr->nr_raw_registers);
|
|
regcache_xfer_part (regcache, regnum, offset, len, NULL, buf,
|
|
regcache_raw_read, regcache_raw_write);
|
|
}
|
|
|
|
void
|
|
regcache_cooked_read_part (struct regcache *regcache, int regnum,
|
|
int offset, int len, gdb_byte *buf)
|
|
{
|
|
struct regcache_descr *descr = regcache->descr;
|
|
gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
|
|
regcache_xfer_part (regcache, regnum, offset, len, buf, NULL,
|
|
regcache_cooked_read, regcache_cooked_write);
|
|
}
|
|
|
|
void
|
|
regcache_cooked_write_part (struct regcache *regcache, int regnum,
|
|
int offset, int len, const gdb_byte *buf)
|
|
{
|
|
struct regcache_descr *descr = regcache->descr;
|
|
gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
|
|
regcache_xfer_part (regcache, regnum, offset, len, NULL, buf,
|
|
regcache_cooked_read, regcache_cooked_write);
|
|
}
|
|
|
|
/* Hack to keep code that view the register buffer as raw bytes
|
|
working. */
|
|
|
|
int
|
|
register_offset_hack (struct gdbarch *gdbarch, int regnum)
|
|
{
|
|
struct regcache_descr *descr = regcache_descr (gdbarch);
|
|
gdb_assert (regnum >= 0 && regnum < descr->nr_cooked_registers);
|
|
return descr->register_offset[regnum];
|
|
}
|
|
|
|
/* Hack to keep code using register_bytes working. */
|
|
|
|
int
|
|
deprecated_register_bytes (void)
|
|
{
|
|
return current_regcache->descr->sizeof_raw_registers;
|
|
}
|
|
|
|
/* Return the contents of register REGNUM as an unsigned integer. */
|
|
|
|
ULONGEST
|
|
read_register (int regnum)
|
|
{
|
|
gdb_byte *buf = alloca (register_size (current_gdbarch, regnum));
|
|
deprecated_read_register_gen (regnum, buf);
|
|
return (extract_unsigned_integer (buf, register_size (current_gdbarch, regnum)));
|
|
}
|
|
|
|
ULONGEST
|
|
read_register_pid (int regnum, ptid_t ptid)
|
|
{
|
|
ptid_t save_ptid;
|
|
int save_pid;
|
|
CORE_ADDR retval;
|
|
|
|
if (ptid_equal (ptid, inferior_ptid))
|
|
return read_register (regnum);
|
|
|
|
save_ptid = inferior_ptid;
|
|
|
|
inferior_ptid = ptid;
|
|
|
|
retval = read_register (regnum);
|
|
|
|
inferior_ptid = save_ptid;
|
|
|
|
return retval;
|
|
}
|
|
|
|
/* Store VALUE into the raw contents of register number REGNUM. */
|
|
|
|
void
|
|
write_register (int regnum, LONGEST val)
|
|
{
|
|
void *buf;
|
|
int size;
|
|
size = register_size (current_gdbarch, regnum);
|
|
buf = alloca (size);
|
|
store_signed_integer (buf, size, (LONGEST) val);
|
|
deprecated_write_register_gen (regnum, buf);
|
|
}
|
|
|
|
void
|
|
write_register_pid (int regnum, CORE_ADDR val, ptid_t ptid)
|
|
{
|
|
ptid_t save_ptid;
|
|
|
|
if (ptid_equal (ptid, inferior_ptid))
|
|
{
|
|
write_register (regnum, val);
|
|
return;
|
|
}
|
|
|
|
save_ptid = inferior_ptid;
|
|
|
|
inferior_ptid = ptid;
|
|
|
|
write_register (regnum, val);
|
|
|
|
inferior_ptid = save_ptid;
|
|
}
|
|
|
|
/* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */
|
|
|
|
void
|
|
regcache_raw_supply (struct regcache *regcache, int regnum,
|
|
const gdb_byte *buf)
|
|
{
|
|
void *regbuf;
|
|
size_t size;
|
|
|
|
gdb_assert (regcache != NULL);
|
|
gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
|
|
gdb_assert (!regcache->readonly_p);
|
|
|
|
/* FIXME: kettenis/20030828: It shouldn't be necessary to handle
|
|
CURRENT_REGCACHE specially here. */
|
|
if (regcache == current_regcache
|
|
&& !ptid_equal (registers_ptid, inferior_ptid))
|
|
{
|
|
registers_changed ();
|
|
registers_ptid = inferior_ptid;
|
|
}
|
|
|
|
regbuf = register_buffer (regcache, regnum);
|
|
size = regcache->descr->sizeof_register[regnum];
|
|
|
|
if (buf)
|
|
memcpy (regbuf, buf, size);
|
|
else
|
|
memset (regbuf, 0, size);
|
|
|
|
/* Mark the register as cached. */
|
|
regcache->register_valid_p[regnum] = 1;
|
|
}
|
|
|
|
/* Collect register REGNUM from REGCACHE and store its contents in BUF. */
|
|
|
|
void
|
|
regcache_raw_collect (const struct regcache *regcache, int regnum,
|
|
gdb_byte *buf)
|
|
{
|
|
const void *regbuf;
|
|
size_t size;
|
|
|
|
gdb_assert (regcache != NULL && buf != NULL);
|
|
gdb_assert (regnum >= 0 && regnum < regcache->descr->nr_raw_registers);
|
|
|
|
regbuf = register_buffer (regcache, regnum);
|
|
size = regcache->descr->sizeof_register[regnum];
|
|
memcpy (buf, regbuf, size);
|
|
}
|
|
|
|
|
|
/* read_pc, write_pc, read_sp, etc. Special handling for registers
|
|
PC, SP, and FP. */
|
|
|
|
/* NOTE: cagney/2001-02-18: The functions read_pc_pid(), read_pc() and
|
|
read_sp(), will eventually be replaced by per-frame methods.
|
|
Instead of relying on the global INFERIOR_PTID, they will use the
|
|
contextual information provided by the FRAME. These functions do
|
|
not belong in the register cache. */
|
|
|
|
/* NOTE: cagney/2003-06-07: The functions generic_target_write_pc(),
|
|
write_pc_pid() and write_pc(), all need to be replaced by something
|
|
that does not rely on global state. But what? */
|
|
|
|
CORE_ADDR
|
|
read_pc_pid (ptid_t ptid)
|
|
{
|
|
ptid_t saved_inferior_ptid;
|
|
CORE_ADDR pc_val;
|
|
|
|
/* In case ptid != inferior_ptid. */
|
|
saved_inferior_ptid = inferior_ptid;
|
|
inferior_ptid = ptid;
|
|
|
|
if (TARGET_READ_PC_P ())
|
|
pc_val = TARGET_READ_PC (ptid);
|
|
/* Else use per-frame method on get_current_frame. */
|
|
else if (PC_REGNUM >= 0)
|
|
{
|
|
CORE_ADDR raw_val = read_register_pid (PC_REGNUM, ptid);
|
|
pc_val = ADDR_BITS_REMOVE (raw_val);
|
|
}
|
|
else
|
|
internal_error (__FILE__, __LINE__, _("read_pc_pid: Unable to find PC"));
|
|
|
|
inferior_ptid = saved_inferior_ptid;
|
|
return pc_val;
|
|
}
|
|
|
|
CORE_ADDR
|
|
read_pc (void)
|
|
{
|
|
return read_pc_pid (inferior_ptid);
|
|
}
|
|
|
|
void
|
|
generic_target_write_pc (CORE_ADDR pc, ptid_t ptid)
|
|
{
|
|
if (PC_REGNUM >= 0)
|
|
write_register_pid (PC_REGNUM, pc, ptid);
|
|
else
|
|
internal_error (__FILE__, __LINE__,
|
|
_("generic_target_write_pc"));
|
|
}
|
|
|
|
void
|
|
write_pc_pid (CORE_ADDR pc, ptid_t ptid)
|
|
{
|
|
ptid_t saved_inferior_ptid;
|
|
|
|
/* In case ptid != inferior_ptid. */
|
|
saved_inferior_ptid = inferior_ptid;
|
|
inferior_ptid = ptid;
|
|
|
|
TARGET_WRITE_PC (pc, ptid);
|
|
|
|
inferior_ptid = saved_inferior_ptid;
|
|
}
|
|
|
|
void
|
|
write_pc (CORE_ADDR pc)
|
|
{
|
|
write_pc_pid (pc, inferior_ptid);
|
|
}
|
|
|
|
/* Cope with strage ways of getting to the stack and frame pointers */
|
|
|
|
CORE_ADDR
|
|
read_sp (void)
|
|
{
|
|
if (TARGET_READ_SP_P ())
|
|
return TARGET_READ_SP ();
|
|
else if (gdbarch_unwind_sp_p (current_gdbarch))
|
|
return get_frame_sp (get_current_frame ());
|
|
else if (SP_REGNUM >= 0)
|
|
/* Try SP_REGNUM last: this makes all sorts of [wrong] assumptions
|
|
about the architecture so put it at the end. */
|
|
return read_register (SP_REGNUM);
|
|
internal_error (__FILE__, __LINE__, _("read_sp: Unable to find SP"));
|
|
}
|
|
|
|
static void
|
|
reg_flush_command (char *command, int from_tty)
|
|
{
|
|
/* Force-flush the register cache. */
|
|
registers_changed ();
|
|
if (from_tty)
|
|
printf_filtered (_("Register cache flushed.\n"));
|
|
}
|
|
|
|
static void
|
|
build_regcache (void)
|
|
{
|
|
current_regcache = regcache_xmalloc (current_gdbarch);
|
|
current_regcache->readonly_p = 0;
|
|
}
|
|
|
|
static void
|
|
dump_endian_bytes (struct ui_file *file, enum bfd_endian endian,
|
|
const unsigned char *buf, long len)
|
|
{
|
|
int i;
|
|
switch (endian)
|
|
{
|
|
case BFD_ENDIAN_BIG:
|
|
for (i = 0; i < len; i++)
|
|
fprintf_unfiltered (file, "%02x", buf[i]);
|
|
break;
|
|
case BFD_ENDIAN_LITTLE:
|
|
for (i = len - 1; i >= 0; i--)
|
|
fprintf_unfiltered (file, "%02x", buf[i]);
|
|
break;
|
|
default:
|
|
internal_error (__FILE__, __LINE__, _("Bad switch"));
|
|
}
|
|
}
|
|
|
|
enum regcache_dump_what
|
|
{
|
|
regcache_dump_none, regcache_dump_raw, regcache_dump_cooked, regcache_dump_groups
|
|
};
|
|
|
|
static void
|
|
regcache_dump (struct regcache *regcache, struct ui_file *file,
|
|
enum regcache_dump_what what_to_dump)
|
|
{
|
|
struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);
|
|
struct gdbarch *gdbarch = regcache->descr->gdbarch;
|
|
int regnum;
|
|
int footnote_nr = 0;
|
|
int footnote_register_size = 0;
|
|
int footnote_register_offset = 0;
|
|
int footnote_register_type_name_null = 0;
|
|
long register_offset = 0;
|
|
unsigned char buf[MAX_REGISTER_SIZE];
|
|
|
|
#if 0
|
|
fprintf_unfiltered (file, "nr_raw_registers %d\n",
|
|
regcache->descr->nr_raw_registers);
|
|
fprintf_unfiltered (file, "nr_cooked_registers %d\n",
|
|
regcache->descr->nr_cooked_registers);
|
|
fprintf_unfiltered (file, "sizeof_raw_registers %ld\n",
|
|
regcache->descr->sizeof_raw_registers);
|
|
fprintf_unfiltered (file, "sizeof_raw_register_valid_p %ld\n",
|
|
regcache->descr->sizeof_raw_register_valid_p);
|
|
fprintf_unfiltered (file, "NUM_REGS %d\n", NUM_REGS);
|
|
fprintf_unfiltered (file, "NUM_PSEUDO_REGS %d\n", NUM_PSEUDO_REGS);
|
|
#endif
|
|
|
|
gdb_assert (regcache->descr->nr_cooked_registers
|
|
== (NUM_REGS + NUM_PSEUDO_REGS));
|
|
|
|
for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++)
|
|
{
|
|
/* Name. */
|
|
if (regnum < 0)
|
|
fprintf_unfiltered (file, " %-10s", "Name");
|
|
else
|
|
{
|
|
const char *p = REGISTER_NAME (regnum);
|
|
if (p == NULL)
|
|
p = "";
|
|
else if (p[0] == '\0')
|
|
p = "''";
|
|
fprintf_unfiltered (file, " %-10s", p);
|
|
}
|
|
|
|
/* Number. */
|
|
if (regnum < 0)
|
|
fprintf_unfiltered (file, " %4s", "Nr");
|
|
else
|
|
fprintf_unfiltered (file, " %4d", regnum);
|
|
|
|
/* Relative number. */
|
|
if (regnum < 0)
|
|
fprintf_unfiltered (file, " %4s", "Rel");
|
|
else if (regnum < NUM_REGS)
|
|
fprintf_unfiltered (file, " %4d", regnum);
|
|
else
|
|
fprintf_unfiltered (file, " %4d", (regnum - NUM_REGS));
|
|
|
|
/* Offset. */
|
|
if (regnum < 0)
|
|
fprintf_unfiltered (file, " %6s ", "Offset");
|
|
else
|
|
{
|
|
fprintf_unfiltered (file, " %6ld",
|
|
regcache->descr->register_offset[regnum]);
|
|
if (register_offset != regcache->descr->register_offset[regnum]
|
|
|| register_offset != DEPRECATED_REGISTER_BYTE (regnum)
|
|
|| (regnum > 0
|
|
&& (regcache->descr->register_offset[regnum]
|
|
!= (regcache->descr->register_offset[regnum - 1]
|
|
+ regcache->descr->sizeof_register[regnum - 1])))
|
|
)
|
|
{
|
|
if (!footnote_register_offset)
|
|
footnote_register_offset = ++footnote_nr;
|
|
fprintf_unfiltered (file, "*%d", footnote_register_offset);
|
|
}
|
|
else
|
|
fprintf_unfiltered (file, " ");
|
|
register_offset = (regcache->descr->register_offset[regnum]
|
|
+ regcache->descr->sizeof_register[regnum]);
|
|
}
|
|
|
|
/* Size. */
|
|
if (regnum < 0)
|
|
fprintf_unfiltered (file, " %5s ", "Size");
|
|
else
|
|
fprintf_unfiltered (file, " %5ld",
|
|
regcache->descr->sizeof_register[regnum]);
|
|
|
|
/* Type. */
|
|
{
|
|
const char *t;
|
|
if (regnum < 0)
|
|
t = "Type";
|
|
else
|
|
{
|
|
static const char blt[] = "builtin_type";
|
|
t = TYPE_NAME (register_type (regcache->descr->gdbarch, regnum));
|
|
if (t == NULL)
|
|
{
|
|
char *n;
|
|
if (!footnote_register_type_name_null)
|
|
footnote_register_type_name_null = ++footnote_nr;
|
|
n = xstrprintf ("*%d", footnote_register_type_name_null);
|
|
make_cleanup (xfree, n);
|
|
t = n;
|
|
}
|
|
/* Chop a leading builtin_type. */
|
|
if (strncmp (t, blt, strlen (blt)) == 0)
|
|
t += strlen (blt);
|
|
}
|
|
fprintf_unfiltered (file, " %-15s", t);
|
|
}
|
|
|
|
/* Leading space always present. */
|
|
fprintf_unfiltered (file, " ");
|
|
|
|
/* Value, raw. */
|
|
if (what_to_dump == regcache_dump_raw)
|
|
{
|
|
if (regnum < 0)
|
|
fprintf_unfiltered (file, "Raw value");
|
|
else if (regnum >= regcache->descr->nr_raw_registers)
|
|
fprintf_unfiltered (file, "<cooked>");
|
|
else if (!regcache_valid_p (regcache, regnum))
|
|
fprintf_unfiltered (file, "<invalid>");
|
|
else
|
|
{
|
|
regcache_raw_read (regcache, regnum, buf);
|
|
fprintf_unfiltered (file, "0x");
|
|
dump_endian_bytes (file, TARGET_BYTE_ORDER, buf,
|
|
regcache->descr->sizeof_register[regnum]);
|
|
}
|
|
}
|
|
|
|
/* Value, cooked. */
|
|
if (what_to_dump == regcache_dump_cooked)
|
|
{
|
|
if (regnum < 0)
|
|
fprintf_unfiltered (file, "Cooked value");
|
|
else
|
|
{
|
|
regcache_cooked_read (regcache, regnum, buf);
|
|
fprintf_unfiltered (file, "0x");
|
|
dump_endian_bytes (file, TARGET_BYTE_ORDER, buf,
|
|
regcache->descr->sizeof_register[regnum]);
|
|
}
|
|
}
|
|
|
|
/* Group members. */
|
|
if (what_to_dump == regcache_dump_groups)
|
|
{
|
|
if (regnum < 0)
|
|
fprintf_unfiltered (file, "Groups");
|
|
else
|
|
{
|
|
const char *sep = "";
|
|
struct reggroup *group;
|
|
for (group = reggroup_next (gdbarch, NULL);
|
|
group != NULL;
|
|
group = reggroup_next (gdbarch, group))
|
|
{
|
|
if (gdbarch_register_reggroup_p (gdbarch, regnum, group))
|
|
{
|
|
fprintf_unfiltered (file, "%s%s", sep, reggroup_name (group));
|
|
sep = ",";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fprintf_unfiltered (file, "\n");
|
|
}
|
|
|
|
if (footnote_register_size)
|
|
fprintf_unfiltered (file, "*%d: Inconsistent register sizes.\n",
|
|
footnote_register_size);
|
|
if (footnote_register_offset)
|
|
fprintf_unfiltered (file, "*%d: Inconsistent register offsets.\n",
|
|
footnote_register_offset);
|
|
if (footnote_register_type_name_null)
|
|
fprintf_unfiltered (file,
|
|
"*%d: Register type's name NULL.\n",
|
|
footnote_register_type_name_null);
|
|
do_cleanups (cleanups);
|
|
}
|
|
|
|
static void
|
|
regcache_print (char *args, enum regcache_dump_what what_to_dump)
|
|
{
|
|
if (args == NULL)
|
|
regcache_dump (current_regcache, gdb_stdout, what_to_dump);
|
|
else
|
|
{
|
|
struct ui_file *file = gdb_fopen (args, "w");
|
|
if (file == NULL)
|
|
perror_with_name (_("maintenance print architecture"));
|
|
regcache_dump (current_regcache, file, what_to_dump);
|
|
ui_file_delete (file);
|
|
}
|
|
}
|
|
|
|
static void
|
|
maintenance_print_registers (char *args, int from_tty)
|
|
{
|
|
regcache_print (args, regcache_dump_none);
|
|
}
|
|
|
|
static void
|
|
maintenance_print_raw_registers (char *args, int from_tty)
|
|
{
|
|
regcache_print (args, regcache_dump_raw);
|
|
}
|
|
|
|
static void
|
|
maintenance_print_cooked_registers (char *args, int from_tty)
|
|
{
|
|
regcache_print (args, regcache_dump_cooked);
|
|
}
|
|
|
|
static void
|
|
maintenance_print_register_groups (char *args, int from_tty)
|
|
{
|
|
regcache_print (args, regcache_dump_groups);
|
|
}
|
|
|
|
extern initialize_file_ftype _initialize_regcache; /* -Wmissing-prototype */
|
|
|
|
void
|
|
_initialize_regcache (void)
|
|
{
|
|
regcache_descr_handle = gdbarch_data_register_post_init (init_regcache_descr);
|
|
DEPRECATED_REGISTER_GDBARCH_SWAP (current_regcache);
|
|
deprecated_register_gdbarch_swap (NULL, 0, build_regcache);
|
|
|
|
observer_attach_target_changed (regcache_observer_target_changed);
|
|
|
|
add_com ("flushregs", class_maintenance, reg_flush_command,
|
|
_("Force gdb to flush its register cache (maintainer command)"));
|
|
|
|
/* Initialize the thread/process associated with the current set of
|
|
registers. For now, -1 is special, and means `no current process'. */
|
|
registers_ptid = pid_to_ptid (-1);
|
|
|
|
add_cmd ("registers", class_maintenance, maintenance_print_registers, _("\
|
|
Print the internal register configuration.\n\
|
|
Takes an optional file parameter."), &maintenanceprintlist);
|
|
add_cmd ("raw-registers", class_maintenance,
|
|
maintenance_print_raw_registers, _("\
|
|
Print the internal register configuration including raw values.\n\
|
|
Takes an optional file parameter."), &maintenanceprintlist);
|
|
add_cmd ("cooked-registers", class_maintenance,
|
|
maintenance_print_cooked_registers, _("\
|
|
Print the internal register configuration including cooked values.\n\
|
|
Takes an optional file parameter."), &maintenanceprintlist);
|
|
add_cmd ("register-groups", class_maintenance,
|
|
maintenance_print_register_groups, _("\
|
|
Print the internal register configuration including each register's group.\n\
|
|
Takes an optional file parameter."),
|
|
&maintenanceprintlist);
|
|
|
|
}
|