/* Native-dependent code for GNU/Linux i386.
- Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Free Software Foundation, Inc.
This file is part of GDB.
val = ptrace (PTRACE_PEEKUSER, tid, 4 * regmap[regno], 0);
if (errno != 0)
error (_("Couldn't read register %s (#%d): %s."),
- gdbarch_register_name (current_gdbarch, regno),
+ gdbarch_register_name (get_regcache_arch (regcache), regno),
regno, safe_strerror (errno));
regcache_raw_supply (regcache, regno, &val);
ptrace (PTRACE_POKEUSER, tid, 4 * regmap[regno], val);
if (errno != 0)
error (_("Couldn't write register %s (#%d): %s."),
- gdbarch_register_name (current_gdbarch, regno),
+ gdbarch_register_name (get_regcache_arch (regcache), regno),
regno, safe_strerror (errno));
}
\f
for (i = 0; i < I386_NUM_GREGS; i++)
regcache_raw_supply (regcache, i, regp + regmap[i]);
- if (I386_LINUX_ORIG_EAX_REGNUM < gdbarch_num_regs (current_gdbarch))
+ if (I386_LINUX_ORIG_EAX_REGNUM
+ < gdbarch_num_regs (get_regcache_arch (regcache)))
regcache_raw_supply (regcache, I386_LINUX_ORIG_EAX_REGNUM,
regp + ORIG_EAX);
}
regcache_raw_collect (regcache, i, regp + regmap[i]);
if ((regno == -1 || regno == I386_LINUX_ORIG_EAX_REGNUM)
- && I386_LINUX_ORIG_EAX_REGNUM < gdbarch_num_regs (current_gdbarch))
+ && I386_LINUX_ORIG_EAX_REGNUM
+ < gdbarch_num_regs (get_regcache_arch (regcache)))
regcache_raw_collect (regcache, I386_LINUX_ORIG_EAX_REGNUM,
regp + ORIG_EAX);
}
{
int i;
- for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++)
+ for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
if (regno == -1 || regno == i)
fetch_register (regcache, i);
{
int i;
- for (i = 0; i < gdbarch_num_regs (current_gdbarch); i++)
+ for (i = 0; i < gdbarch_num_regs (get_regcache_arch (regcache)); i++)
if (regno == -1 || regno == i)
store_register (regcache, i);
/* Support for debug registers. */
+static unsigned long i386_linux_dr[DR_CONTROL + 1];
+
static unsigned long
-i386_linux_dr_get (int regnum)
+i386_linux_dr_get (ptid_t ptid, int regnum)
{
int tid;
unsigned long value;
- /* FIXME: kettenis/2001-01-29: It's not clear what we should do with
- multi-threaded processes here. For now, pretend there is just
- one thread. */
- tid = PIDGET (inferior_ptid);
+ tid = TIDGET (ptid);
+ if (tid == 0)
+ tid = PIDGET (ptid);
/* FIXME: kettenis/2001-03-27: Calling perror_with_name if the
ptrace call fails breaks debugging remote targets. The correct
}
static void
-i386_linux_dr_set (int regnum, unsigned long value)
+i386_linux_dr_set (ptid_t ptid, int regnum, unsigned long value)
{
int tid;
- /* FIXME: kettenis/2001-01-29: It's not clear what we should do with
- multi-threaded processes here. For now, pretend there is just
- one thread. */
- tid = PIDGET (inferior_ptid);
+ tid = TIDGET (ptid);
+ if (tid == 0)
+ tid = PIDGET (ptid);
errno = 0;
ptrace (PTRACE_POKEUSER, tid,
void
i386_linux_dr_set_control (unsigned long control)
{
- i386_linux_dr_set (DR_CONTROL, control);
+ struct lwp_info *lp;
+ ptid_t ptid;
+
+ i386_linux_dr[DR_CONTROL] = control;
+ ALL_LWPS (lp, ptid)
+ i386_linux_dr_set (ptid, DR_CONTROL, control);
}
void
i386_linux_dr_set_addr (int regnum, CORE_ADDR addr)
{
+ struct lwp_info *lp;
+ ptid_t ptid;
+
gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR);
- i386_linux_dr_set (DR_FIRSTADDR + regnum, addr);
+ i386_linux_dr[DR_FIRSTADDR + regnum] = addr;
+ ALL_LWPS (lp, ptid)
+ i386_linux_dr_set (ptid, DR_FIRSTADDR + regnum, addr);
}
void
i386_linux_dr_reset_addr (int regnum)
{
- gdb_assert (regnum >= 0 && regnum <= DR_LASTADDR - DR_FIRSTADDR);
-
- i386_linux_dr_set (DR_FIRSTADDR + regnum, 0L);
+ i386_linux_dr_set_addr (regnum, 0);
}
unsigned long
i386_linux_dr_get_status (void)
{
- return i386_linux_dr_get (DR_STATUS);
+ return i386_linux_dr_get (inferior_ptid, DR_STATUS);
+}
+
+static void
+i386_linux_new_thread (ptid_t ptid)
+{
+ int i;
+
+ for (i = DR_FIRSTADDR; i <= DR_LASTADDR; i++)
+ i386_linux_dr_set (ptid, i, i386_linux_dr[i]);
+
+ i386_linux_dr_set (ptid, DR_CONTROL, i386_linux_dr[DR_CONTROL]);
}
\f
int request = PTRACE_CONT;
- if (pid == -1)
- /* Resume all threads. */
- /* I think this only gets used in the non-threaded case, where "resume
- all threads" and "resume inferior_ptid" are the same. */
- pid = PIDGET (inferior_ptid);
-
if (step)
{
struct regcache *regcache = get_thread_regcache (pid_to_ptid (pid));
request = PTRACE_SINGLESTEP;
- regcache_cooked_read_unsigned (regcache,
- gdbarch_pc_regnum (current_gdbarch), &pc);
+ regcache_cooked_read_unsigned
+ (regcache, gdbarch_pc_regnum (get_regcache_arch (regcache)), &pc);
/* Returning from a signal trampoline is done by calling a
special system call (sigreturn or rt_sigreturn, see
that's about to be restored, and set the trace flag there. */
/* First check if PC is at a system call. */
- if (read_memory_nobpt (pc, buf, LINUX_SYSCALL_LEN) == 0
+ if (target_read_memory (pc, buf, LINUX_SYSCALL_LEN) == 0
&& memcmp (buf, linux_syscall, LINUX_SYSCALL_LEN) == 0)
{
ULONGEST syscall;
/* Fill in the generic GNU/Linux methods. */
t = linux_target ();
+ i386_use_watchpoints (t);
+
/* Override the default ptrace resume method. */
t->to_resume = i386_linux_resume;
/* Register the target. */
linux_nat_add_target (t);
+ linux_nat_set_new_thread (t, i386_linux_new_thread);
}