sandbox: Remove a TEXTREL on Linux ARM.

sandbox/linux/seccomp-bpf/syscall.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sandbox/linux/seccomp-bpf/syscall.h"
 
 #include <asm/unistd.h>
 #include <errno.h>
 
 #include "base/basictypes.h"
@@ skipping 125 matching lines @@
 #else
             "stmfd sp!, {fp, lr}\n"
             "add fp, sp, #4\n"
 #endif
             // Check if "r0" is negative. If so, do not attempt to make a
             // system call. Instead, compute the return address that is visible
             // to the kernel after we execute "swi 0". This address can be
             // used as a marker that BPF code inspects.
             "cmp r0, #0\n"
             "bge 1f\n"
-            "ldr r0, =2f\n"
+            "adr r0, 2f\n"
             "b   2f\n"
             // We declared (almost) all clobbered registers to the compiler. On
             // ARM there is no particular register pressure. So, we can go
             // ahead and directly copy the entries from the arguments array
             // into the appropriate CPU registers.
           "1:ldr r5, [r6, #20]\n"
             "ldr r4, [r6, #16]\n"
             "ldr r3, [r6, #12]\n"
             "ldr r2, [r6, #8]\n"
             "ldr r1, [r6, #4]\n"
@@ skipping 77 matching lines @@
     ret = inout;
   }
 #else
   errno = ENOSYS;
   intptr_t ret = -1;
 #endif
   return ret;
 }
 
 }  // namespace sandbox