diff options
Diffstat (limited to 'gdb/i386-linux-nat.c')
| -rw-r--r-- | gdb/i386-linux-nat.c | 58 |
1 files changed, 36 insertions, 22 deletions
diff --git a/gdb/i386-linux-nat.c b/gdb/i386-linux-nat.c index 83484e8a413..2447ecb76a2 100644 --- a/gdb/i386-linux-nat.c +++ b/gdb/i386-linux-nat.c @@ -579,16 +579,17 @@ i386_linux_store_inferior_registers (struct regcache *regcache, int regno) /* 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 @@ -609,14 +610,13 @@ i386_linux_dr_get (int regnum) } 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, @@ -628,29 +628,48 @@ i386_linux_dr_set (int regnum, unsigned long value) 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]); } @@ -729,12 +748,6 @@ i386_linux_resume (ptid_t ptid, int step, enum target_signal signal) 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)); @@ -818,4 +831,5 @@ _initialize_i386_linux_nat (void) /* Register the target. */ linux_nat_add_target (t); + linux_nat_set_new_thread (t, i386_linux_new_thread); } |