libc: don't export unnecessary symbols

Symbols associated with the internal implementation of memcpy
like routines should be private.

Change-Id: I2b1d1f59006395c29d518c153928437b08f93d16
diff --git a/libc/arch-arm/krait/bionic/__strcat_chk.S b/libc/arch-arm/krait/bionic/__strcat_chk.S
index 956b461..bb4bb86 100644
--- a/libc/arch-arm/krait/bionic/__strcat_chk.S
+++ b/libc/arch-arm/krait/bionic/__strcat_chk.S
@@ -196,7 +196,7 @@
 #define MEMCPY_BASE_ALIGNED __strcat_chk_memcpy_base_aligned
 #include "memcpy_base.S"
 
-ENTRY(__strcat_chk_failed)
+ENTRY_PRIVATE(__strcat_chk_failed)
     .cfi_startproc
     .save   {r0, lr}
     .save   {r4, r5}
diff --git a/libc/arch-arm/krait/bionic/__strcpy_chk.S b/libc/arch-arm/krait/bionic/__strcpy_chk.S
index 402cac6..1116cf6 100644
--- a/libc/arch-arm/krait/bionic/__strcpy_chk.S
+++ b/libc/arch-arm/krait/bionic/__strcpy_chk.S
@@ -163,7 +163,7 @@
 #define MEMCPY_BASE_ALIGNED __strcpy_chk_memcpy_base_aligned
 #include "memcpy_base.S"
 
-ENTRY(__strcpy_chk_failed)
+ENTRY_PRIVATE(__strcpy_chk_failed)
     .cfi_startproc
     .save   {r0, lr}
     .cfi_def_cfa_offset 8
diff --git a/libc/arch-arm/krait/bionic/memcpy.S b/libc/arch-arm/krait/bionic/memcpy.S
index ea040bc..f7277fc 100644
--- a/libc/arch-arm/krait/bionic/memcpy.S
+++ b/libc/arch-arm/krait/bionic/memcpy.S
@@ -67,7 +67,7 @@
 #define MEMCPY_BASE_ALIGNED __memcpy_base_aligned
 #include "memcpy_base.S"
 
-ENTRY(__memcpy_chk_fail)
+ENTRY_PRIVATE(__memcpy_chk_fail)
         .cfi_startproc
         // Preserve lr for backtrace.
         push    {lr}
diff --git a/libc/arch-arm/krait/bionic/memcpy_base.S b/libc/arch-arm/krait/bionic/memcpy_base.S
index d87a542..cc1ab60 100644
--- a/libc/arch-arm/krait/bionic/memcpy_base.S
+++ b/libc/arch-arm/krait/bionic/memcpy_base.S
@@ -35,7 +35,7 @@
 
 // Assumes neon instructions and a cache line size of 32 bytes.
 
-ENTRY(MEMCPY_BASE)
+ENTRY_PRIVATE(MEMCPY_BASE)
         .cfi_startproc
         .save {r0, lr}
         .cfi_def_cfa_offset 8