add 32-bit bionic implementation for denver arch
Add 32-bit bionic implementation for denver. Use denver version of memcpy/
memset. Use Cortex-A15 version of strlen/strcat/strcpy/strcmp.
Change-Id: I4c6b675f20cf41a29cadf70a11d1635d7df5b30a
diff --git a/libc/arch-arm/denver/bionic/memcpy.S b/libc/arch-arm/denver/bionic/memcpy.S
new file mode 100644
index 0000000..da4f3dd
--- /dev/null
+++ b/libc/arch-arm/denver/bionic/memcpy.S
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+/*
+ * Copyright (c) 2013 ARM Ltd
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the company may not be used to endorse or promote
+ * products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// Prototype: void *memcpy (void *dst, const void *src, size_t count).
+
+#include <private/bionic_asm.h>
+#include <private/libc_events.h>
+
+ .text
+ .syntax unified
+ .fpu neon
+
+ENTRY(__memcpy_chk)
+ cmp r2, r3
+ bhi __memcpy_chk_fail
+
+ // Fall through to memcpy...
+END(__memcpy_chk)
+
+ENTRY(memcpy)
+ pld [r1, #64]
+ push {r0, lr}
+ .save {r0, lr}
+ .cfi_def_cfa_offset 8
+ .cfi_rel_offset r0, 0
+ .cfi_rel_offset lr, 4
+END(memcpy)
+
+#define MEMCPY_BASE __memcpy_base
+#define MEMCPY_BASE_ALIGNED __memcpy_base_aligned
+#include "memcpy_base.S"
+
+ENTRY_PRIVATE(__memcpy_chk_fail)
+ // Preserve lr for backtrace.
+ push {lr}
+ .save {lr}
+ .cfi_def_cfa_offset 4
+ .cfi_rel_offset lr, 0
+
+ ldr r0, error_message
+ ldr r1, error_code
+1:
+ add r0, pc
+ bl __fortify_chk_fail
+error_code:
+ .word BIONIC_EVENT_MEMCPY_BUFFER_OVERFLOW
+error_message:
+ .word error_string-(1b+8)
+END(__memcpy_chk_fail)
+
+ .data
+error_string:
+ .string "memcpy: prevented write past end of buffer"