0bfdf32fa1
GDB has a function named "current_inferior" and gdbserver has a global variable named "current_inferior", but the two are not equivalent; indeed, gdbserver does not have any real equivalent of what GDB calls an inferior. What gdbserver's "current_inferior" is actually pointing to is a structure describing the current thread. This commit renames current_inferior as current_thread in gdbserver to clarify this. It also renames the function "set_desired_inferior" to "set_desired_thread" and renames various local variables from foo_inferior to foo_thread. gdb/gdbserver/ChangeLog: * inferiors.h (current_inferior): Renamed as... (current_thread): New variable. All uses updated. * linux-low.c (get_pc): Renamed saved_inferior as saved_thread. (maybe_move_out_of_jump_pad): Likewise. (cancel_breakpoint): Likewise. (linux_low_filter_event): Likewise. (wait_for_sigstop): Likewise. (linux_resume_one_lwp): Likewise. (need_step_over_p): Likewise. (start_step_over): Likewise. (linux_stabilize_threads): Renamed save_inferior as saved_thread. * linux-x86-low.c (x86_linux_update_xmltarget): Likewise. * proc-service.c (ps_lgetregs): Renamed reg_inferior as reg_thread and save_inferior as saved_thread. * regcache.c (get_thread_regcache): Renamed saved_inferior as saved_thread. (regcache_invalidate_thread): Likewise. * remote-utils.c (prepare_resume_reply): Likewise. * thread-db.c (thread_db_get_tls_address): Likewise. (disable_thread_event_reporting): Likewise. (remove_thread_event_breakpoints): Likewise. * tracepoint.c (gdb_agent_about_to_close): Renamed save_inferior as saved_thread. * target.h (set_desired_inferior): Renamed as... (set_desired_thread): New declaration. All uses updated. * server.c (myresume): Updated comment to reference thread instead of inferior. (handle_serial_event): Likewise. (handle_target_event): Likewise.
158 lines
3.5 KiB
C
158 lines
3.5 KiB
C
/* GNU/Linux/CRIS specific low level interface, for the remote server for GDB.
|
|
Copyright (C) 1995-2014 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include "server.h"
|
|
#include "linux-low.h"
|
|
#include <sys/ptrace.h>
|
|
|
|
/* Defined in auto-generated file reg-cris.c. */
|
|
void init_registers_cris (void);
|
|
extern const struct target_desc *tdesc_cris;
|
|
|
|
/* CRISv10 */
|
|
#define cris_num_regs 32
|
|
|
|
/* Locations need to match <include/asm/arch/ptrace.h>. */
|
|
static int cris_regmap[] = {
|
|
15*4, 14*4, 13*4, 12*4,
|
|
11*4, 10*4, 9*4, 8*4,
|
|
7*4, 6*4, 5*4, 4*4,
|
|
3*4, 2*4, 23*4, 19*4,
|
|
|
|
-1, -1, -1, -1,
|
|
-1, 17*4, -1, 16*4,
|
|
-1, -1, -1, 18*4,
|
|
-1, 17*4, -1, -1
|
|
|
|
};
|
|
|
|
static int
|
|
cris_cannot_store_register (int regno)
|
|
{
|
|
if (cris_regmap[regno] == -1)
|
|
return 1;
|
|
|
|
return (regno >= cris_num_regs);
|
|
}
|
|
|
|
static int
|
|
cris_cannot_fetch_register (int regno)
|
|
{
|
|
if (cris_regmap[regno] == -1)
|
|
return 1;
|
|
|
|
return (regno >= cris_num_regs);
|
|
}
|
|
|
|
extern int debug_threads;
|
|
|
|
static CORE_ADDR
|
|
cris_get_pc (struct regcache *regcache, void)
|
|
{
|
|
unsigned long pc;
|
|
collect_register_by_name (regcache, "pc", &pc);
|
|
if (debug_threads)
|
|
debug_printf ("stop pc is %08lx\n", pc);
|
|
return pc;
|
|
}
|
|
|
|
static void
|
|
cris_set_pc (struct regcache *regcache, CORE_ADDR pc)
|
|
{
|
|
unsigned long newpc = pc;
|
|
supply_register_by_name (regcache, "pc", &newpc);
|
|
}
|
|
|
|
static const unsigned short cris_breakpoint = 0xe938;
|
|
#define cris_breakpoint_len 2
|
|
|
|
static int
|
|
cris_breakpoint_at (CORE_ADDR where)
|
|
{
|
|
unsigned short insn;
|
|
|
|
(*the_target->read_memory) (where, (unsigned char *) &insn,
|
|
cris_breakpoint_len);
|
|
if (insn == cris_breakpoint)
|
|
return 1;
|
|
|
|
/* If necessary, recognize more trap instructions here. GDB only uses the
|
|
one. */
|
|
return 0;
|
|
}
|
|
|
|
/* We only place breakpoints in empty marker functions, and thread locking
|
|
is outside of the function. So rather than importing software single-step,
|
|
we can just run until exit. */
|
|
static CORE_ADDR
|
|
cris_reinsert_addr (void)
|
|
{
|
|
struct regcache *regcache = get_thread_regcache (current_thread, 1);
|
|
unsigned long pc;
|
|
collect_register_by_name (regcache, "srp", &pc);
|
|
return pc;
|
|
}
|
|
|
|
static void
|
|
cris_arch_setup (void)
|
|
{
|
|
current_process ()->tdesc = tdesc_cris;
|
|
}
|
|
|
|
static struct usrregs_info cris_usrregs_info =
|
|
{
|
|
cris_num_regs,
|
|
cris_regmap,
|
|
};
|
|
|
|
static struct regs_info regs_info =
|
|
{
|
|
NULL, /* regset_bitmap */
|
|
&cris_usrregs_info,
|
|
};
|
|
|
|
static const struct regs_info *
|
|
cris_regs_info (void)
|
|
{
|
|
return ®s_info;
|
|
}
|
|
|
|
struct linux_target_ops the_low_target = {
|
|
cris_arch_setup,
|
|
cris_regs_info,
|
|
cris_cannot_fetch_register,
|
|
cris_cannot_store_register,
|
|
NULL, /* fetch_register */
|
|
cris_get_pc,
|
|
cris_set_pc,
|
|
(const unsigned char *) &cris_breakpoint,
|
|
cris_breakpoint_len,
|
|
cris_reinsert_addr,
|
|
0,
|
|
cris_breakpoint_at,
|
|
0,
|
|
0,
|
|
0,
|
|
0,
|
|
};
|
|
|
|
void
|
|
initialize_low_arch (void)
|
|
{
|
|
init_registers_cris ();
|
|
}
|