aarch64: use <sys/user.h> defined register structures
glibc now supplies these (compatible) structs instead of including the
kernel's <asm/ptrace.h> header, so let's use them. Annoyingly this will
cause new elfutils to FTBFS on old glibc, and vice versa. So include a
new configure check for the new struct names and use the old ones if
they are not avilable.
Signed-off-by: Kyle McMartin <kyle@redhat.com>
Signed-off-by: Mark Wielaard <mjw@redhat.com>
diff --git a/configure.ac b/configure.ac
index 1d79597..f9c3c30 100644
--- a/configure.ac
+++ b/configure.ac
@@ -301,6 +301,19 @@
AC_CHECK_SIZEOF(long)
+# On aarch64 before glibc 2.20 we would get the kernel user_pt_regs instead
+# of the user_regs_struct from sys/user.h. They are structurally the same
+# but we get either one or the other.
+AC_CHECK_TYPE([struct user_regs_struct],
+ [sys_user_has_user_regs=yes], [sys_user_has_user_regs=no],
+ [[#include <sys/ptrace.h>]
+ [#include <sys/time.h>]
+ [#include <sys/user.h>]])
+if test "$sys_user_has_user_regs" = "yes"; then
+ AC_DEFINE(HAVE_SYS_USER_REGS, 1,
+ [Define to 1 if <sys/user.h> defines struct user_regs_struct])
+fi
+
# On a 64-bit host where can can use $CC -m32, we'll run two sets of tests.
# Likewise in a 32-bit build on a host where $CC -m64 works.
utrace_BIARCH