/* Low level interface to ptrace, for the remote server for GDB.
- Copyright (C) 1995-2018 Free Software Foundation, Inc.
+ Copyright (C) 1995-2019 Free Software Foundation, Inc.
This file is part of GDB.
#include "server.h"
#include "linux-low.h"
#include "nat/linux-osdata.h"
-#include "agent.h"
+#include "common/agent.h"
#include "tdesc.h"
-#include "rsp-low.h"
-#include "signals-state-save-restore.h"
+#include "common/rsp-low.h"
+#include "common/signals-state-save-restore.h"
#include "nat/linux-nat.h"
#include "nat/linux-waitpid.h"
-#include "gdb_wait.h"
+#include "common/gdb_wait.h"
#include "nat/gdb_ptrace.h"
#include "nat/linux-ptrace.h"
#include "nat/linux-procfs.h"
#include <sys/stat.h>
#include <sys/vfs.h>
#include <sys/uio.h>
-#include "filestuff.h"
+#include "common/filestuff.h"
#include "tracepoint.h"
#include "hostio.h"
#include <inttypes.h>
-#include "common-inferior.h"
+#include "common/common-inferior.h"
#include "nat/fork-inferior.h"
-#include "environ.h"
+#include "common/environ.h"
#include "common/scoped_restore.h"
#ifndef ELFMAG0
/* Don't include <linux/elf.h> here. If it got included by gdb_proc_service.h
#ifdef HAVE_LINUX_BTRACE
# include "nat/linux-btrace.h"
-# include "btrace-common.h"
+# include "common/btrace-common.h"
#endif
#ifndef HAVE_ELF32_AUXV_T
ptid_t ptid = ptid_t (pid, pid, 0);
int err;
+ proc = linux_add_process (pid, 1);
+
/* Attach to PID. We will check for other threads
soon. */
err = linux_attach_lwp (ptid);
if (err != 0)
{
- std::string reason = linux_ptrace_attach_fail_reason_string (ptid, err);
+ remove_process (proc);
+ std::string reason = linux_ptrace_attach_fail_reason_string (ptid, err);
error ("Cannot attach to process %ld: %s", pid, reason.c_str ());
}
- proc = linux_add_process (pid, 1);
-
/* Don't ignore the initial SIGSTOP if we just attached to this
process. It will be collected by wait shortly. */
initial_thread = find_thread_ptid (ptid_t (pid, pid, 0));
struct lwp_info *
iterate_over_lwps (ptid_t filter,
- iterate_over_lwps_ftype callback,
- void *data)
+ gdb::function_view<iterate_over_lwps_ftype> callback)
{
thread_info *thread = find_thread (filter, [&] (thread_info *thr_arg)
{
lwp_info *lwp = get_thread_lwp (thr_arg);
- return callback (lwp, data);
+ return callback (lwp);
});
if (thread == NULL)
#endif
if (res < 0)
{
- if (errno == EIO)
+ if (errno == EIO
+ || (errno == EINVAL && regset->type == OPTIONAL_REGS))
{
- /* If we get EIO on a regset, do not try it again for
- this process mode. */
+ /* If we get EIO on a regset, or an EINVAL and the regset is
+ optional, do not try it again for this process mode. */
disable_regset (regsets_info, regset);
}
else if (errno == ENODATA)
if (res < 0)
{
- if (errno == EIO)
+ if (errno == EIO
+ || (errno == EINVAL && regset->type == OPTIONAL_REGS))
{
- /* If we get EIO on a regset, do not try it again for
- this process mode. */
+ /* If we get EIO on a regset, or an EINVAL and the regset is
+ optional, do not try it again for this process mode. */
disable_regset (regsets_info, regset);
}
else if (errno == ESRCH)
return pc;
}
+/* Fetch the entry MATCH from the auxv vector, where entries are length
+ WORDSIZE. If no entry was found, return zero. */
+
+static CORE_ADDR
+linux_get_auxv (int wordsize, CORE_ADDR match)
+{
+ gdb_byte *data = (gdb_byte *) alloca (2 * wordsize);
+ int offset = 0;
+
+ gdb_assert (wordsize == 4 || wordsize == 8);
+
+ while ((*the_target->read_auxv) (offset, data, 2 * wordsize) == 2 * wordsize)
+ {
+ if (wordsize == 4)
+ {
+ uint32_t *data_p = (uint32_t *)data;
+ if (data_p[0] == match)
+ return data_p[1];
+ }
+ else
+ {
+ uint64_t *data_p = (uint64_t *)data;
+ if (data_p[0] == match)
+ return data_p[1];
+ }
+
+ offset += 2 * wordsize;
+ }
+
+ return 0;
+}
+
+/* See linux-low.h. */
+
+CORE_ADDR
+linux_get_hwcap (int wordsize)
+{
+ return linux_get_auxv (wordsize, AT_HWCAP);
+}
+
+/* See linux-low.h. */
+
+CORE_ADDR
+linux_get_hwcap2 (int wordsize)
+{
+ return linux_get_auxv (wordsize, AT_HWCAP2);
+}
static struct target_ops linux_target_ops = {
linux_create_inferior,