Define PRIVATE and add it to all global symbols so we don't export assembly functions.

libvpx/source/libvpx/vp8/common/x86/idctllm_sse2.asm

 ;
 ;  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
 ;
 ;  Use of this source code is governed by a BSD-style license
 ;  that can be found in the LICENSE file in the root of the source
 ;  tree. An additional intellectual property rights grant can be found
 ;  in the file PATENTS.  All contributing project authors may
 ;  be found in the AUTHORS file in the root of the source tree.
 ;
 
 
 %include "vpx_ports/x86_abi_support.asm"
 
 ;void idct_dequant_0_2x_sse2
 ; (
 ;   short *qcoeff       - 0
 ;   short *dequant      - 1
 ;   unsigned char *pre  - 2
 ;   unsigned char *dst  - 3
 ;   int dst_stride      - 4
 ;   int blk_stride      - 5
 ; )
 
-global sym(idct_dequant_0_2x_sse2)
+global sym(idct_dequant_0_2x_sse2) PRIVATE
 sym(idct_dequant_0_2x_sse2):
     push        rbp
     mov         rbp, rsp
     SHADOW_ARGS_TO_STACK 6
     GET_GOT     rbx
     ; end prolog
 
         mov         rdx,            arg(1) ; dequant
         mov         rax,            arg(0) ; qcoeff
 
@@ skipping 55 matching lines @@
 
         movq        [rax],          xmm2
         movq        [rax + rdx],    xmm3
 
     ; begin epilog
     RESTORE_GOT
     UNSHADOW_ARGS
     pop         rbp
     ret
 
-global sym(idct_dequant_full_2x_sse2)
+global sym(idct_dequant_full_2x_sse2) PRIVATE
 sym(idct_dequant_full_2x_sse2):
     push        rbp
     mov         rbp, rsp
     SHADOW_ARGS_TO_STACK 7
     GET_GOT     rbx
     push        rsi
     push        rdi
     ; end prolog
 
     ; special case when 2 blocks have 0 or 1 coeffs
@@ skipping 242 matching lines @@
 
 ;void idct_dequant_dc_0_2x_sse2
 ; (
 ;   short *qcoeff       - 0
 ;   short *dequant      - 1
 ;   unsigned char *pre  - 2
 ;   unsigned char *dst  - 3
 ;   int dst_stride      - 4
 ;   short *dc           - 5
 ; )
-global sym(idct_dequant_dc_0_2x_sse2)
+global sym(idct_dequant_dc_0_2x_sse2) PRIVATE
 sym(idct_dequant_dc_0_2x_sse2):
     push        rbp
     mov         rbp, rsp
     SHADOW_ARGS_TO_STACK 7
     GET_GOT     rbx
     push        rsi
     push        rdi
     ; end prolog
 
     ; special case when 2 blocks have 0 or 1 coeffs
@@ skipping 55 matching lines @@
         movq        [rdi + rdx],    xmm3
 
     ; begin epilog
     pop         rdi
     pop         rsi
     RESTORE_GOT
     UNSHADOW_ARGS
     pop         rbp
     ret
 
-global sym(idct_dequant_dc_full_2x_sse2)
+global sym(idct_dequant_dc_full_2x_sse2) PRIVATE
 sym(idct_dequant_dc_full_2x_sse2):
     push        rbp
     mov         rbp, rsp
     SHADOW_ARGS_TO_STACK 7
     GET_GOT     rbx
     push        rsi
     push        rdi
     ; end prolog
 
     ; special case when 2 blocks have 0 or 1 coeffs
@@ skipping 249 matching lines @@
 SECTION_RODATA
 align 16
 fours:
     times 8 dw 0x0004
 align 16
 x_s1sqr2:
     times 8 dw 0x8A8C
 align 16
 x_c1sqr2less1:
     times 8 dw 0x4E7B