#include "server.h"
#include "linux-low.h"
+#include "nat/aarch64-linux.h"
#include "nat/aarch64-linux-hw-point.h"
#include "linux-aarch32-low.h"
#include "elf/common.h"
}
}
-struct aarch64_dr_update_callback_param
-{
- int is_watchpoint;
- unsigned int idx;
-};
-
-/* Callback for iterate_over_lwps. Records the
- information about the change of one hardware breakpoint/watchpoint
- setting for the thread LWP.
- The information is passed in via PTR.
- N.B. The actual updating of hardware debug registers is not
- carried out until the moment the thread is resumed. */
-
-static int
-debug_reg_change_callback (struct lwp_info *lwp, void *ptr)
-{
- struct aarch64_dr_update_callback_param *param_p
- = (struct aarch64_dr_update_callback_param *) ptr;
- int pid = pid_of (lwp->thread);
- int idx = param_p->idx;
- int is_watchpoint = param_p->is_watchpoint;
- struct arch_lwp_info *info = lwp->arch_private;
- dr_changed_t *dr_changed_ptr;
- dr_changed_t dr_changed;
-
- if (show_debug_regs)
- {
- debug_printf ("debug_reg_change_callback: \n\tOn entry:\n");
- debug_printf ("\tpid%d, dr_changed_bp=0x%s, "
- "dr_changed_wp=0x%s\n", pid,
- phex (info->dr_changed_bp, 8),
- phex (info->dr_changed_wp, 8));
- }
-
- dr_changed_ptr = is_watchpoint ? &info->dr_changed_wp
- : &info->dr_changed_bp;
- dr_changed = *dr_changed_ptr;
-
- gdb_assert (idx >= 0
- && (idx <= (is_watchpoint ? aarch64_num_wp_regs
- : aarch64_num_bp_regs)));
-
- /* The actual update is done later just before resuming the lwp,
- we just mark that one register pair needs updating. */
- DR_MARK_N_CHANGED (dr_changed, idx);
- *dr_changed_ptr = dr_changed;
-
- /* If the lwp isn't stopped, force it to momentarily pause, so
- we can update its debug registers. */
- if (!lwp->stopped)
- linux_stop_lwp (lwp);
-
- if (show_debug_regs)
- {
- debug_printf ("\tOn exit:\n\tpid%d, dr_changed_bp=0x%s, "
- "dr_changed_wp=0x%s\n", pid,
- phex (info->dr_changed_bp, 8),
- phex (info->dr_changed_wp, 8));
- }
-
- return 0;
-}
-
-/* Notify each thread that their IDXth breakpoint/watchpoint register
- pair needs to be updated. The message will be recorded in each
- thread's arch-specific data area, the actual updating will be done
- when the thread is resumed. */
-
-void
-aarch64_notify_debug_reg_change (const struct aarch64_debug_reg_state *state,
- int is_watchpoint, unsigned int idx)
-{
- struct aarch64_dr_update_callback_param param;
- ptid_t pid_ptid = pid_to_ptid (pid_of (current_thread));
-
- param.is_watchpoint = is_watchpoint;
- param.idx = idx;
-
- iterate_over_lwps (pid_ptid, debug_reg_change_callback, (void *) ¶m);
-}
-
-
/* Return the pointer to the debug register state structure in the
current process' arch-specific data area. */
-static struct aarch64_debug_reg_state *
-aarch64_get_debug_reg_state ()
+struct aarch64_debug_reg_state *
+aarch64_get_debug_reg_state (pid_t pid)
{
- struct process_info *proc;
+ struct process_info *proc = find_process_pid (pid);
- proc = current_process ();
return &proc->priv->arch_private->debug_reg_state;
}
{
int ret;
enum target_hw_bp_type targ_type;
- struct aarch64_debug_reg_state *state = aarch64_get_debug_reg_state ();
+ struct aarch64_debug_reg_state *state
+ = aarch64_get_debug_reg_state (pid_of (current_thread));
if (show_debug_regs)
fprintf (stderr, "insert_point on entry (addr=0x%08lx, len=%d)\n",
state);
if (show_debug_regs)
- aarch64_show_debug_reg_state (aarch64_get_debug_reg_state (),
- "insert_point", addr, len, targ_type);
+ aarch64_show_debug_reg_state (state, "insert_point", addr, len,
+ targ_type);
return ret;
}
{
int ret;
enum target_hw_bp_type targ_type;
- struct aarch64_debug_reg_state *state = aarch64_get_debug_reg_state ();
+ struct aarch64_debug_reg_state *state
+ = aarch64_get_debug_reg_state (pid_of (current_thread));
if (show_debug_regs)
fprintf (stderr, "remove_point on entry (addr=0x%08lx, len=%d)\n",
state);
if (show_debug_regs)
- aarch64_show_debug_reg_state (aarch64_get_debug_reg_state (),
- "remove_point", addr, len, targ_type);
+ aarch64_show_debug_reg_state (state, "remove_point", addr, len,
+ targ_type);
return ret;
}
return (CORE_ADDR) 0;
/* Check if the address matches any watched address. */
- state = aarch64_get_debug_reg_state ();
+ state = aarch64_get_debug_reg_state (pid_of (current_thread));
for (i = aarch64_num_wp_regs - 1; i >= 0; --i)
{
const unsigned int len = aarch64_watchpoint_length (state->dr_ctrl_wp[i]);
*child->priv->arch_private = *parent->priv->arch_private;
}
-/* Implementation of linux_target_ops method "linux_prepare_to_resume".
-
- If the debug regs have changed, update the thread's copies. */
-
-static void
-aarch64_linux_prepare_to_resume (struct lwp_info *lwp)
-{
- struct thread_info *thread = get_lwp_thread (lwp);
- ptid_t ptid = ptid_of (thread);
- struct arch_lwp_info *info = lwp->arch_private;
-
- if (DR_HAS_CHANGED (info->dr_changed_bp)
- || DR_HAS_CHANGED (info->dr_changed_wp))
- {
- int tid = ptid_get_lwp (ptid);
- struct process_info *proc = find_process_pid (ptid_get_pid (ptid));
- struct aarch64_debug_reg_state *state
- = &proc->priv->arch_private->debug_reg_state;
-
- if (show_debug_regs)
- fprintf (stderr, "prepare_to_resume thread %ld\n", lwpid_of (thread));
-
- /* Watchpoints. */
- if (DR_HAS_CHANGED (info->dr_changed_wp))
- {
- aarch64_linux_set_debug_regs (state, tid, 1);
- DR_CLEAR_CHANGED (info->dr_changed_wp);
- }
-
- /* Breakpoints. */
- if (DR_HAS_CHANGED (info->dr_changed_bp))
- {
- aarch64_linux_set_debug_regs (state, tid, 0);
- DR_CLEAR_CHANGED (info->dr_changed_bp);
- }
- }
-}
-
/* Return the right target description according to the ELF file of
current thread. */
projects / external / binutils.git / blobdiff