NonSFI mode: Enable compiling exception_test for NonSFI NaCl on ARM

tests/common/register_set.h

 /*
  * Copyright (c) 2012 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef NATIVE_CLIENT_TESTS_COMMON_REGISTER_SET_H_
 #define NATIVE_CLIENT_TESTS_COMMON_REGISTER_SET_H_
 
 #include "native_client/src/include/nacl/nacl_exception.h"
@@ skipping 222 matching lines @@
 
 # define REGS_SAVER_FUNC_NOPROTO(def_func, callee_func) \
     void callee_func(struct NaClSignalContext *regs); \
     __asm__( \
         ".pushsection .text, \"ax\", @progbits\n" \
         ".p2align 5\n" \
         ".global " #def_func "\n"\
         #def_func ":\n" \
         /* Push most of "struct NaClSignalContext" in reverse order. */ \
         "push $0\n"  /* Leave space for flags */ \
-        "push $" #def_func "\n"  /* Fill out prog_ctr with known value */ \
+        "push $" #def_func "@got\n"  /* Fill out prog_ctr with known value */ \

[Junichi Uekawa, 2014/09/09 12:23:58]

This works around having relocation in code, but wondering if this would break
others.

[Junichi Uekawa, 2014/09/09 15:28:03]

Looking at try results of course it does, but then I don't really have a good
solution right now about how to be able to not use a absolute address.

This ends up giving me:
/ssd/nacl2/native_client/toolchain/linux_x86/pnacl_newlib/host_x86_32/bin/le32-nacl-ld.gold:
error: read-only segment has dynamic relocations                    

         "push %edi\n" \
         "push %esi\n" \
         "push %ebp\n" \
         "push %esp\n" \
         "push %ebx\n" \
         "push %edx\n" \
         "push %ecx\n" \
         "push %eax\n" \
         /* Save flags. */ \
         SAVE_X86_FLAGS_INTO_REG("%eax") \
@@ skipping 187 matching lines @@
 void RegsUnsetNonCalleeSavedRegisters(struct NaClSignalContext *regs);
 
 /*
  * For a function called with register state |regs|, extract the first
  * argument.  This is useful for a function entry point defined by
  * REGS_SAVER_FUNC.
  */
 uintptr_t RegsGetArg1(const struct NaClSignalContext *regs);
 
 #endif