-/* Copyright (C) 2009-2013 Free Software Foundation, Inc.
+/* Copyright (C) 2009-2017 Free Software Foundation, Inc.
This file is part of GDB.
#include "gdb_wait.h"
#include <signal.h>
#include "filestuff.h"
+#include "common-inferior.h"
+#include "nat/fork-inferior.h"
int using_threads = 1;
proc = add_process (pid, attached);
proc->tdesc = lynx_tdesc;
- proc->private = xcalloc (1, sizeof (*proc->private));
- proc->private->last_wait_event_ptid = null_ptid;
+ proc->priv = XCNEW (struct process_info_private);
+ proc->priv->last_wait_event_ptid = null_ptid;
return proc;
}
+/* Callback used by fork_inferior to start tracing the inferior. */
+
+static void
+lynx_ptrace_fun ()
+{
+ int pgrp;
+
+ /* Switch child to its own process group so that signals won't
+ directly affect GDBserver. */
+ pgrp = getpid();
+ if (pgrp < 0)
+ trace_start_error_with_name ("pgrp");
+ if (setpgid (0, pgrp) < 0)
+ trace_start_error_with_name ("setpgid");
+ if (ioctl (0, TIOCSPGRP, &pgrp) < 0)
+ trace_start_error_with_name ("ioctl");
+ if (lynx_ptrace (PTRACE_TRACEME, null_ptid, 0, 0, 0) < 0)
+ trace_start_error_with_name ("lynx_ptrace");
+}
+
/* Implement the create_inferior method of the target_ops vector. */
static int
-lynx_create_inferior (char *program, char **allargs)
+lynx_create_inferior (const char *program,
+ const std::vector<char *> &program_args)
{
int pid;
+ std::string str_program_args = stringify_argv (program_args);
lynx_debug ("lynx_create_inferior ()");
- pid = fork ();
- if (pid < 0)
- perror_with_name ("fork");
+ pid = fork_inferior (program,
+ str_program_args.c_str (),
+ get_environ ()->envp (), lynx_ptrace_fun,
+ NULL, NULL, NULL, NULL);
- if (pid == 0)
- {
- int pgrp;
-
- close_most_fds ();
-
- /* Switch child to its own process group so that signals won't
- directly affect gdbserver. */
- pgrp = getpid();
- setpgid (0, pgrp);
- ioctl (0, TIOCSPGRP, &pgrp);
- lynx_ptrace (PTRACE_TRACEME, null_ptid, 0, 0, 0);
- execv (program, allargs);
- fprintf (stderr, "Cannot exec %s: %s.\n", program, strerror (errno));
- fflush (stderr);
- _exit (0177);
- }
+ post_fork_inferior (pid, program);
lynx_add_process (pid, 0);
/* Do not add the process thread just yet, as we do not know its tid.
static void
lynx_resume (struct thread_resume *resume_info, size_t n)
{
- /* FIXME: Assume for now that n == 1. */
ptid_t ptid = resume_info[0].thread;
- const int request = (resume_info[0].kind == resume_step
- ? PTRACE_SINGLESTEP : PTRACE_CONT);
+ const int request
+ = (resume_info[0].kind == resume_step
+ ? (n == 1 ? PTRACE_SINGLESTEP_ONE : PTRACE_SINGLESTEP)
+ : PTRACE_CONT);
const int signal = resume_info[0].sig;
/* If given a minus_one_ptid, then try using the current_process'
unexpected signals (Eg SIG61) when we resume the inferior
using a different thread. */
if (ptid_equal (ptid, minus_one_ptid))
- ptid = current_process()->private->last_wait_event_ptid;
+ ptid = current_process()->priv->last_wait_event_ptid;
/* The ptid might still be minus_one_ptid; this can happen between
the moment we create the inferior or attach to a process, and
the moment we resume its execution for the first time. It is
- fine to use the current_inferior's ptid in those cases. */
+ fine to use the current_thread's ptid in those cases. */
if (ptid_equal (ptid, minus_one_ptid))
- ptid = thread_to_gdb_id (current_inferior);
+ ptid = ptid_of (current_thread);
- regcache_invalidate ();
+ regcache_invalidate_pid (ptid_get_pid (ptid));
errno = 0;
lynx_ptrace (request, ptid, 1, signal, 0);
ptid_t new_ptid;
if (ptid_equal (ptid, minus_one_ptid))
- pid = lynx_ptid_get_pid (thread_to_gdb_id (current_inferior));
+ pid = lynx_ptid_get_pid (ptid_of (current_thread));
else
pid = BUILDPID (lynx_ptid_get_pid (ptid), lynx_ptid_get_tid (ptid));
ret = lynx_waitpid (pid, &wstat);
new_ptid = lynx_ptid_build (ret, ((union wait *) &wstat)->w_tid);
- find_process_pid (ret)->private->last_wait_event_ptid = new_ptid;
+ find_process_pid (ret)->priv->last_wait_event_ptid = new_ptid;
/* If this is a new thread, then add it now. The reason why we do
this here instead of when handling new-thread events is because
return 0;
}
+/* A callback for find_inferior which removes from the thread list
+ all threads belonging to process PROC. */
+
+static int
+lynx_delete_thread_callback (struct inferior_list_entry *entry, void *proc)
+{
+ struct process_info *process = (struct process_info *) proc;
+
+ if (ptid_get_pid (entry->id) == pid_of (process))
+ {
+ struct thread_info *thr = find_thread_ptid (entry->id);
+
+ remove_thread (thr);
+ }
+
+ return 0;
+}
+
/* Implement the mourn target_ops method. */
static void
lynx_mourn (struct process_info *proc)
{
+ find_inferior (&all_threads, lynx_delete_thread_callback, proc);
+
/* Free our private data. */
- free (proc->private);
- proc->private = NULL;
+ free (proc->priv);
+ proc->priv = NULL;
- clear_inferiors ();
+ remove_process (proc);
}
/* Implement the join target_ops method. */
lynx_fetch_registers (struct regcache *regcache, int regno)
{
struct lynx_regset_info *regset = lynx_target_regsets;
- ptid_t inferior_ptid = thread_to_gdb_id (current_inferior);
+ ptid_t inferior_ptid = ptid_of (current_thread);
lynx_debug ("lynx_fetch_registers (regno = %d)", regno);
lynx_store_registers (struct regcache *regcache, int regno)
{
struct lynx_regset_info *regset = lynx_target_regsets;
- ptid_t inferior_ptid = thread_to_gdb_id (current_inferior);
+ ptid_t inferior_ptid = ptid_of (current_thread);
lynx_debug ("lynx_store_registers (regno = %d)", regno);
int buf;
const int xfer_size = sizeof (buf);
CORE_ADDR addr = memaddr & -(CORE_ADDR) xfer_size;
- ptid_t inferior_ptid = thread_to_gdb_id (current_inferior);
+ ptid_t inferior_ptid = ptid_of (current_thread);
while (addr < memaddr + len)
{
int buf;
const int xfer_size = sizeof (buf);
CORE_ADDR addr = memaddr & -(CORE_ADDR) xfer_size;
- ptid_t inferior_ptid = thread_to_gdb_id (current_inferior);
+ ptid_t inferior_ptid = ptid_of (current_thread);
while (addr < memaddr + len)
{
if (addr + xfer_size > memaddr + len)
truncate = addr + xfer_size - memaddr - len;
if (skip > 0 || truncate > 0)
- /* We need to read the memory at this address in order to preserve
- the data that we are not overwriting. */
- lynx_read_memory (addr, (unsigned char *) &buf, xfer_size);
- if (errno)
- return errno;
+ {
+ /* We need to read the memory at this address in order to preserve
+ the data that we are not overwriting. */
+ lynx_read_memory (addr, (unsigned char *) &buf, xfer_size);
+ if (errno)
+ return errno;
+ }
memcpy ((gdb_byte *) &buf + skip, myaddr + (addr - memaddr) + skip,
xfer_size - skip - truncate);
errno = 0;
static void
lynx_request_interrupt (void)
{
- ptid_t inferior_ptid = thread_to_gdb_id (current_inferior);
+ ptid_t inferior_ptid = ptid_of (get_first_thread ());
kill (lynx_ptid_get_pid (inferior_ptid), SIGINT);
}
static struct target_ops lynx_target_ops = {
lynx_create_inferior,
+ NULL, /* post_create_inferior */
lynx_attach,
lynx_kill,
lynx_detach,
NULL, /* look_up_symbols */
lynx_request_interrupt,
NULL, /* read_auxv */
+ NULL, /* supports_z_point_type */
NULL, /* insert_point */
NULL, /* remove_point */
+ NULL, /* stopped_by_sw_breakpoint */
+ NULL, /* supports_stopped_by_sw_breakpoint */
+ NULL, /* stopped_by_hw_breakpoint */
+ NULL, /* supports_stopped_by_hw_breakpoint */
+ target_can_do_hardware_single_step,
NULL, /* stopped_by_watchpoint */
NULL, /* stopped_data_address */
NULL, /* read_offsets */
NULL, /* async */
NULL, /* start_non_stop */
NULL, /* supports_multi_process */
+ NULL, /* supports_fork_events */
+ NULL, /* supports_vfork_events */
+ NULL, /* supports_exec_events */
+ NULL, /* handle_new_gdb_connection */
NULL, /* handle_monitor_command */
};