/* Cache and manage the values of registers for GDB, the GNU debugger.
Copyright (C) 1986, 1987, 1989, 1991, 1994, 1995, 1996, 1998, 2000, 2001,
- 2002, 2004, 2007 Free Software Foundation, Inc.
+ 2002, 2004, 2007, 2008, 2009 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,
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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "inferior.h"
/* Total size of the register space. The raw registers are mapped
directly onto the raw register cache while the pseudo's are
either mapped onto raw-registers or memory. */
- descr->nr_cooked_registers = gdbarch_num_regs (current_gdbarch)
- + gdbarch_num_pseudo_regs (current_gdbarch);
- descr->sizeof_cooked_register_valid_p = gdbarch_num_regs (current_gdbarch)
+ descr->nr_cooked_registers = gdbarch_num_regs (gdbarch)
+ + gdbarch_num_pseudo_regs (gdbarch);
+ descr->sizeof_cooked_register_valid_p = gdbarch_num_regs (gdbarch)
+ gdbarch_num_pseudo_regs
- (current_gdbarch);
+ (gdbarch);
/* Fill in a table of register types. */
descr->register_type
/* Construct a strictly RAW register cache. Don't allow pseudo's
into the register cache. */
- descr->nr_raw_registers = gdbarch_num_regs (current_gdbarch);
+ descr->nr_raw_registers = gdbarch_num_regs (gdbarch);
/* FIXME: cagney/2002-08-13: Overallocate the register_valid_p
array. This pretects GDB from erant code that accesses elements
struct regcache_descr *descr = regcache_descr (gdbarch);
int size;
gdb_assert (regnum >= 0
- && regnum < (gdbarch_num_regs (current_gdbarch)
- + gdbarch_num_pseudo_regs (current_gdbarch)));
+ && regnum < (gdbarch_num_regs (gdbarch)
+ + gdbarch_num_pseudo_regs (gdbarch)));
size = descr->sizeof_register[regnum];
return size;
}
registers_changed ();
}
+/* Update global variables old ptids to hold NEW_PTID if they were
+ holding OLD_PTID. */
+static void
+regcache_thread_ptid_changed (ptid_t old_ptid, ptid_t new_ptid)
+{
+ if (current_regcache != NULL
+ && ptid_equal (current_regcache->ptid, old_ptid))
+ current_regcache->ptid = new_ptid;
+}
+
/* Low level examining and depositing of registers.
The caller is responsible for making sure that the inferior is
regcache_xfree (current_regcache);
current_regcache = NULL;
+ /* Need to forget about any frames we have cached, too. */
+ reinit_frame_cache ();
+
/* 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
/* 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 (gdbarch_cannot_store_register (current_gdbarch, regnum))
+ if (gdbarch_cannot_store_register (get_regcache_arch (regcache), regnum))
return;
/* If we have a valid copy of the register, and new value == old
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];
-}
-
-
/* Supply register REGNUM, whose contents are stored in BUF, to REGCACHE. */
void
}
-/* read_pc, write_pc, etc. Special handling for register PC. */
-
-/* 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? */
+/* Special handling for register PC. */
CORE_ADDR
-read_pc_pid (ptid_t ptid)
+regcache_read_pc (struct regcache *regcache)
{
- struct regcache *regcache = get_thread_regcache (ptid);
struct gdbarch *gdbarch = get_regcache_arch (regcache);
CORE_ADDR pc_val;
if (gdbarch_read_pc_p (gdbarch))
pc_val = gdbarch_read_pc (gdbarch, regcache);
/* Else use per-frame method on get_current_frame. */
- else if (gdbarch_pc_regnum (current_gdbarch) >= 0)
+ else if (gdbarch_pc_regnum (gdbarch) >= 0)
{
ULONGEST raw_val;
regcache_cooked_read_unsigned (regcache,
- gdbarch_pc_regnum (current_gdbarch),
+ gdbarch_pc_regnum (gdbarch),
&raw_val);
- pc_val = gdbarch_addr_bits_remove (current_gdbarch, raw_val);
+ pc_val = gdbarch_addr_bits_remove (gdbarch, raw_val);
}
else
- internal_error (__FILE__, __LINE__, _("read_pc_pid: Unable to find PC"));
-
+ internal_error (__FILE__, __LINE__,
+ _("regcache_read_pc: Unable to find PC"));
return pc_val;
}
CORE_ADDR
read_pc (void)
{
- return read_pc_pid (inferior_ptid);
+ return regcache_read_pc (get_current_regcache ());
}
void
-write_pc_pid (CORE_ADDR pc, ptid_t ptid)
+regcache_write_pc (struct regcache *regcache, CORE_ADDR pc)
{
- struct regcache *regcache = get_thread_regcache (ptid);
struct gdbarch *gdbarch = get_regcache_arch (regcache);
if (gdbarch_write_pc_p (gdbarch))
gdbarch_write_pc (gdbarch, regcache, pc);
- if (gdbarch_pc_regnum (current_gdbarch) >= 0)
+ else if (gdbarch_pc_regnum (gdbarch) >= 0)
regcache_cooked_write_unsigned (regcache,
- gdbarch_pc_regnum (current_gdbarch), pc);
+ gdbarch_pc_regnum (gdbarch), pc);
else
internal_error (__FILE__, __LINE__,
- _("write_pc_pid: Unable to update PC"));
+ _("regcache_write_pc: Unable to update PC"));
}
void
write_pc (CORE_ADDR pc)
{
- write_pc_pid (pc, inferior_ptid);
+ regcache_write_pc (get_current_regcache (), pc);
}
fprintf_unfiltered (file, "sizeof_raw_register_valid_p %ld\n",
regcache->descr->sizeof_raw_register_valid_p);
fprintf_unfiltered (file, "gdbarch_num_regs %d\n",
- gdbarch_num_regs (current_gdbarch));
+ gdbarch_num_regs (gdbarch));
fprintf_unfiltered (file, "gdbarch_num_pseudo_regs %d\n",
- gdbarch_num_pseudo_regs (current_gdbarch));
+ gdbarch_num_pseudo_regs (gdbarch));
#endif
gdb_assert (regcache->descr->nr_cooked_registers
- == (gdbarch_num_regs (current_gdbarch)
- + gdbarch_num_pseudo_regs (current_gdbarch)));
+ == (gdbarch_num_regs (gdbarch)
+ + gdbarch_num_pseudo_regs (gdbarch)));
for (regnum = -1; regnum < regcache->descr->nr_cooked_registers; regnum++)
{
fprintf_unfiltered (file, " %-10s", "Name");
else
{
- const char *p = gdbarch_register_name (current_gdbarch, regnum);
+ const char *p = gdbarch_register_name (gdbarch, regnum);
if (p == NULL)
p = "";
else if (p[0] == '\0')
/* Relative number. */
if (regnum < 0)
fprintf_unfiltered (file, " %4s", "Rel");
- else if (regnum < gdbarch_num_regs (current_gdbarch))
+ else if (regnum < gdbarch_num_regs (gdbarch))
fprintf_unfiltered (file, " %4d", regnum);
else
fprintf_unfiltered (file, " %4d",
- (regnum - gdbarch_num_regs (current_gdbarch)));
+ (regnum - gdbarch_num_regs (gdbarch)));
/* Offset. */
if (regnum < 0)
regcache_raw_read (regcache, regnum, buf);
fprintf_unfiltered (file, "0x");
dump_endian_bytes (file,
- gdbarch_byte_order (current_gdbarch), buf,
+ gdbarch_byte_order (gdbarch), buf,
regcache->descr->sizeof_register[regnum]);
}
}
regcache_cooked_read (regcache, regnum, buf);
fprintf_unfiltered (file, "0x");
dump_endian_bytes (file,
- gdbarch_byte_order (current_gdbarch), buf,
+ gdbarch_byte_order (gdbarch), buf,
regcache->descr->sizeof_register[regnum]);
}
}
regcache_print (char *args, enum regcache_dump_what what_to_dump)
{
if (args == NULL)
- regcache_dump (current_regcache, gdb_stdout, what_to_dump);
+ regcache_dump (get_current_regcache (), gdb_stdout, what_to_dump);
else
{
+ struct cleanup *cleanups;
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);
+ cleanups = make_cleanup_ui_file_delete (file);
+ regcache_dump (get_current_regcache (), file, what_to_dump);
+ do_cleanups (cleanups);
}
}
regcache_descr_handle = gdbarch_data_register_post_init (init_regcache_descr);
observer_attach_target_changed (regcache_observer_target_changed);
+ observer_attach_thread_ptid_changed (regcache_thread_ptid_changed);
add_com ("flushregs", class_maintenance, reg_flush_command,
_("Force gdb to flush its register cache (maintainer command)"));
projects / deliverable / binutils-gdb.git / blobdiff