gdb: x86: fix x32 builds with inline asm

We need to cast the pointer up to 64bits so that the push works on x32
targets.  For 64bit targets, this makes no difference.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 8ba8772..3928ac6 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2012-01-08  Mike Frysinger  <vapier@gentoo.org>
+
+       * common/linux-ptrace.c (linux_ptrace_test_ret_to_nx) [__x86_64__]:
+       Cast return_address to 64bits.
+
 2013-01-08  Hui Zhu  <hui_zhu@mentor.com>
 
        * printcmd.c: Remove define of function output_command.

diff --git a/gdb/common/linux-ptrace.c b/gdb/common/linux-ptrace.c
index 761ef59..886be80 100644 (file)
--- a/gdb/common/linux-ptrace.c
+++ b/gdb/common/linux-ptrace.c
@@ -114,7 +114,8 @@ linux_ptrace_test_ret_to_nx (void)
                        ".globl linux_ptrace_test_ret_to_nx_instr;"
                        "linux_ptrace_test_ret_to_nx_instr:"
                        "ret"
-                       : : "r" (return_address) : "%rsp", "memory");
+                       : : "r" ((uint64_t) (uintptr_t) return_address)
+                       : "%rsp", "memory");
 #else
 # error "!__i386__ && !__x86_64__"
 #endif