gdbserver: Ensure AT_HWCAP2 is defined

When using older compilers, AT_HWCAP2 may not be be defined.
It is defined in elf/common.h, however including this in
gdbserver/linux-low.c causes conflicts.

Manually add the define if it does not exist.

gdb/gdbserver/ChangeLog:

	* linux-low.c (AT_HWCAP2): Add define if not already included.

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 8716ab5..97bc326 100644 (file)
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,3 +1,7 @@
+2019-03-28  Alan Hayward  <alan.hayward@arm.com>
+
+       * linux-low.c (AT_HWCAP2): Add define if not already included.
+
 2019-03-26  Alan Hayward  <alan.hayward@arm.com>
 
        * linux-aarch64-low.c (aarch64_get_hwcap): Remove function.

diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
index 7158a67..265043f 100644 (file)
--- a/gdb/gdbserver/linux-low.c
+++ b/gdb/gdbserver/linux-low.c
@@ -75,6 +75,10 @@
 #define O_LARGEFILE 0
 #endif
 
+#ifndef AT_HWCAP2
+#define AT_HWCAP2 26
+#endif
+
 /* Some targets did not define these ptrace constants from the start,
    so gdbserver defines them locally here.  In the future, these may
    be removed after they are added to asm/ptrace.h.  */