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authorAmbroise Vincent <ambroise.vincent@arm.com>2019-02-11 13:34:41 +0000
committerAmbroise Vincent <ambroise.vincent@arm.com>2019-03-04 11:17:40 +0000
commit4128f9f887ed0ef0c511d2299c75ca71335b3cf1 (patch)
tree9c1624075ae2a7af810df40d527d46195d55ee26
parent2eafdf2c74cf00b9bc3dbeccac794a433acc0c16 (diff)
downloadtf-a-tests-4128f9f887ed0ef0c511d2299c75ca71335b3cf1.tar.gz
libc: Import from TF-A
Based on arm-trusted-firware commit 873e394b3bf93214a441f9f98237b58fbbea55aa Change-Id: I510e092f2b9ff333e9461bdde8d80ed1fab1460c Signed-off-by: Ambroise Vincent <ambroise.vincent@arm.com>
-rw-r--r--include/lib/libc/aarch32/endian_.h146
-rw-r--r--include/lib/libc/aarch32/limits_.h26
-rw-r--r--include/lib/libc/aarch32/stddef_.h20
-rw-r--r--include/lib/libc/aarch32/stdint_.h118
-rw-r--r--include/lib/libc/aarch32/stdio_.h20
-rw-r--r--include/lib/libc/aarch32/stdlib_.h18
-rw-r--r--include/lib/libc/aarch32/string_.h15
-rw-r--r--include/lib/libc/aarch32/time_.h17
-rw-r--r--include/lib/libc/aarch64/endian_.h128
-rw-r--r--include/lib/libc/aarch64/limits_.h26
-rw-r--r--include/lib/libc/aarch64/setjmp_.h30
-rw-r--r--include/lib/libc/aarch64/stddef_.h20
-rw-r--r--include/lib/libc/aarch64/stdint_.h118
-rw-r--r--include/lib/libc/aarch64/stdio_.h20
-rw-r--r--include/lib/libc/aarch64/stdlib_.h18
-rw-r--r--include/lib/libc/aarch64/string_.h15
-rw-r--r--include/lib/libc/aarch64/time_.h17
-rw-r--r--include/lib/libc/assert.h41
-rw-r--r--include/lib/libc/cdefs.h37
-rw-r--r--include/lib/libc/endian.h191
-rw-r--r--include/lib/libc/errno.h169
-rw-r--r--include/lib/libc/limits.h19
-rw-r--r--include/lib/libc/setjmp.h20
-rw-r--r--include/lib/libc/stdarg.h20
-rw-r--r--include/lib/libc/stdbool.h17
-rw-r--r--include/lib/libc/stddef.h22
-rw-r--r--include/lib/libc/stdint.h16
-rw-r--r--include/lib/libc/stdio.h33
-rw-r--r--include/lib/libc/stdlib.h26
-rw-r--r--include/lib/libc/string.h33
-rw-r--r--include/lib/libc/time.h20
-rw-r--r--lib/libc/aarch64/setjmp.S61
-rw-r--r--lib/libc/abort.c15
-rw-r--r--lib/libc/assert.c43
-rw-r--r--lib/libc/exit.c26
-rw-r--r--lib/libc/libc.mk34
-rw-r--r--lib/libc/memchr.c20
-rw-r--r--lib/libc/memcmp.c24
-rw-r--r--lib/libc/memcpy.c18
-rw-r--r--lib/libc/memmove.c31
-rw-r--r--lib/libc/memset.c17
-rw-r--r--lib/libc/printf.c197
-rw-r--r--lib/libc/putchar.c20
-rw-r--r--lib/libc/puts.c24
-rw-r--r--lib/libc/snprintf.c143
-rw-r--r--lib/libc/strchr.c53
-rw-r--r--lib/libc/strcmp.c52
-rw-r--r--lib/libc/strlcpy.c52
-rw-r--r--lib/libc/strlen.c17
-rw-r--r--lib/libc/strncmp.c53
-rw-r--r--lib/libc/strnlen.c46
-rw-r--r--lib/libc/strrchr.c49
52 files changed, 2431 insertions, 0 deletions
diff --git a/include/lib/libc/aarch32/endian_.h b/include/lib/libc/aarch32/endian_.h
new file mode 100644
index 00000000..0cf2c755
--- /dev/null
+++ b/include/lib/libc/aarch32/endian_.h
@@ -0,0 +1,146 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2001 David E. O'Brien
+ *
+ * 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. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ * @(#)endian.h 8.1 (Berkeley) 6/10/93
+ * $NetBSD: endian.h,v 1.7 1999/08/21 05:53:51 simonb Exp $
+ * $FreeBSD$
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef ENDIAN__H
+#define ENDIAN__H
+
+#include <stdint.h>
+
+/*
+ * Definitions for byte order, according to byte significance from low
+ * address to high.
+ */
+#define _LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define _BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define _PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */
+
+#ifdef __ARMEB__
+#define _BYTE_ORDER _BIG_ENDIAN
+#else
+#define _BYTE_ORDER _LITTLE_ENDIAN
+#endif /* __ARMEB__ */
+
+#if __BSD_VISIBLE
+#define LITTLE_ENDIAN _LITTLE_ENDIAN
+#define BIG_ENDIAN _BIG_ENDIAN
+#define PDP_ENDIAN _PDP_ENDIAN
+#define BYTE_ORDER _BYTE_ORDER
+#endif
+
+#ifdef __ARMEB__
+#define _QUAD_HIGHWORD 0
+#define _QUAD_LOWWORD 1
+#define __ntohl(x) ((uint32_t)(x))
+#define __ntohs(x) ((uint16_t)(x))
+#define __htonl(x) ((uint32_t)(x))
+#define __htons(x) ((uint16_t)(x))
+#else
+#define _QUAD_HIGHWORD 1
+#define _QUAD_LOWWORD 0
+#define __ntohl(x) (__bswap32(x))
+#define __ntohs(x) (__bswap16(x))
+#define __htonl(x) (__bswap32(x))
+#define __htons(x) (__bswap16(x))
+#endif /* __ARMEB__ */
+
+static __inline uint64_t
+__bswap64(uint64_t _x)
+{
+
+ return ((_x >> 56) | ((_x >> 40) & 0xff00) | ((_x >> 24) & 0xff0000) |
+ ((_x >> 8) & 0xff000000) | ((_x << 8) & ((uint64_t)0xff << 32)) |
+ ((_x << 24) & ((uint64_t)0xff << 40)) |
+ ((_x << 40) & ((uint64_t)0xff << 48)) | ((_x << 56)));
+}
+
+static __inline uint32_t
+__bswap32_var(uint32_t v)
+{
+ uint32_t t1;
+
+ __asm __volatile("eor %1, %0, %0, ror #16\n"
+ "bic %1, %1, #0x00ff0000\n"
+ "mov %0, %0, ror #8\n"
+ "eor %0, %0, %1, lsr #8\n"
+ : "+r" (v), "=r" (t1));
+
+ return (v);
+}
+
+static __inline uint16_t
+__bswap16_var(uint16_t v)
+{
+ uint32_t ret = v & 0xffff;
+
+ __asm __volatile(
+ "mov %0, %0, ror #8\n"
+ "orr %0, %0, %0, lsr #16\n"
+ "bic %0, %0, %0, lsl #16"
+ : "+r" (ret));
+
+ return ((uint16_t)ret);
+}
+
+#ifdef __OPTIMIZE__
+
+#define __bswap32_constant(x) \
+ ((((x) & 0xff000000U) >> 24) | \
+ (((x) & 0x00ff0000U) >> 8) | \
+ (((x) & 0x0000ff00U) << 8) | \
+ (((x) & 0x000000ffU) << 24))
+
+#define __bswap16_constant(x) \
+ ((((x) & 0xff00) >> 8) | \
+ (((x) & 0x00ff) << 8))
+
+#define __bswap16(x) \
+ ((uint16_t)(__builtin_constant_p(x) ? \
+ __bswap16_constant(x) : \
+ __bswap16_var(x)))
+
+#define __bswap32(x) \
+ ((uint32_t)(__builtin_constant_p(x) ? \
+ __bswap32_constant(x) : \
+ __bswap32_var(x)))
+
+#else
+#define __bswap16(x) __bswap16_var(x)
+#define __bswap32(x) __bswap32_var(x)
+
+#endif /* __OPTIMIZE__ */
+#endif /* ENDIAN__H */
diff --git a/include/lib/libc/aarch32/limits_.h b/include/lib/libc/aarch32/limits_.h
new file mode 100644
index 00000000..26cec172
--- /dev/null
+++ b/include/lib/libc/aarch32/limits_.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#define SCHAR_MAX 0x7F
+#define SCHAR_MIN (-SCHAR_MIN - 1)
+#define CHAR_MAX 0x7F
+#define CHAR_MIN (-CHAR_MAX - 1)
+#define UCHAR_MAX 0xFFU
+#define SHRT_MAX 0x7FFF
+#define SHRT_MIN (-SHRT_MAX - 1)
+#define USHRT_MAX 0xFFFFU
+#define INT_MAX 0x7FFFFFFF
+#define INT_MIN (-INT_MAX - 1)
+#define UINT_MAX 0xFFFFFFFFU
+#define LONG_MAX 0x7FFFFFFFL
+#define LONG_MIN (-LONG_MAX - 1L)
+#define ULONG_MAX 0xFFFFFFFFUL
+#define LLONG_MAX 0x7FFFFFFFFFFFFFFFLL
+#define LLONG_MIN (-LLONG_MAX - 1LL)
+#define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL
+
+#define __LONG_BIT 32
+#define __WORD_BIT 32
diff --git a/include/lib/libc/aarch32/stddef_.h b/include/lib/libc/aarch32/stddef_.h
new file mode 100644
index 00000000..1babfade
--- /dev/null
+++ b/include/lib/libc/aarch32/stddef_.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STDDEF__H
+#define STDDEF__H
+
+#ifndef SIZET_
+typedef unsigned int size_t;
+#define SIZET_
+#endif
+
+#ifndef _PTRDIFF_T
+typedef long ptrdiff_t;
+#define _PTRDIFF_T
+#endif
+
+#endif /* STDDEF__H */
diff --git a/include/lib/libc/aarch32/stdint_.h b/include/lib/libc/aarch32/stdint_.h
new file mode 100644
index 00000000..4f494859
--- /dev/null
+++ b/include/lib/libc/aarch32/stdint_.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#define INT8_MAX 0x7F
+#define INT8_MIN (-INT8_MAX - 1)
+#define UINT8_MAX 0xFFU
+
+#define INT16_MAX 0x7FFF
+#define INT16_MIN (-INT16_MAX - 1)
+#define UINT16_MAX 0xFFFFU
+
+#define INT32_MAX 0x7FFFFFFF
+#define INT32_MIN (-INT32_MAX - 1)
+#define UINT32_MAX 0xFFFFFFFFU
+
+#define INT64_MAX 0x7FFFFFFFFFFFFFFFLL
+#define INT64_MIN (-INT64_MAX - 1LL)
+#define UINT64_MAX 0xFFFFFFFFFFFFFFFFULL
+
+#define INT_LEAST8_MIN INT8_MIN
+#define INT_LEAST8_MAX INT8_MAX
+#define UINT_LEAST8_MAX UINT8_MAX
+
+#define INT_LEAST16_MIN INT16_MIN
+#define INT_LEAST16_MAX INT16_MAX
+#define UINT_LEAST16_MAX UINT16_MAX
+
+#define INT_LEAST32_MIN INT32_MIN
+#define INT_LEAST32_MAX INT32_MAX
+#define UINT_LEAST32_MAX UINT32_MAX
+
+#define INT_LEAST64_MIN INT64_MIN
+#define INT_LEAST64_MAX INT64_MAX
+#define UINT_LEAST64_MAX UINT64_MAX
+
+#define INT_FAST8_MIN INT32_MIN
+#define INT_FAST8_MAX INT32_MAX
+#define UINT_FAST8_MAX UINT32_MAX
+
+#define INT_FAST16_MIN INT32_MIN
+#define INT_FAST16_MAX INT32_MAX
+#define UINT_FAST16_MAX UINT32_MAX
+
+#define INT_FAST32_MIN INT32_MIN
+#define INT_FAST32_MAX INT32_MAX
+#define UINT_FAST32_MAX UINT32_MAX
+
+#define INT_FAST64_MIN INT64_MIN
+#define INT_FAST64_MAX INT64_MAX
+#define UINT_FAST64_MAX UINT64_MAX
+
+#define INTPTR_MIN INT32_MIN
+#define INTPTR_MAX INT32_MAX
+#define UINTPTR_MAX UINT32_MAX
+
+#define INTMAX_MIN INT64_MIN
+#define INTMAX_MAX INT64_MAX
+#define UINTMAX_MAX UINT64_MAX
+
+#define PTRDIFF_MIN INT32_MIN
+#define PTRDIFF_MAX INT32_MAX
+
+#define SIZE_MAX UINT32_MAX
+
+#define INT8_C(x) x
+#define INT16_C(x) x
+#define INT32_C(x) x
+#define INT64_C(x) x ## LL
+
+#define UINT8_C(x) x
+#define UINT16_C(x) x
+#define UINT32_C(x) x ## U
+#define UINT64_C(x) x ## ULL
+
+#define INTMAX_C(x) x ## LL
+#define UINTMAX_C(x) x ## ULL
+
+typedef signed char int8_t;
+typedef short int16_t;
+typedef int int32_t;
+typedef long long int64_t;
+
+typedef unsigned char uint8_t;
+typedef unsigned short uint16_t;
+typedef unsigned int uint32_t;
+typedef unsigned long long uint64_t;
+
+typedef signed char int8_least_t;
+typedef short int16_least_t;
+typedef int int32_least_t;
+typedef long long int64_least_t;
+
+typedef unsigned char uint8_least_t;
+typedef unsigned short uint16_least_t;
+typedef unsigned int uint32_least_t;
+typedef unsigned long long uint64_least_t;
+
+typedef int int8_fast_t;
+typedef int int16_fast_t;
+typedef int int32_fast_t;
+typedef long long int64_fast_t;
+
+typedef unsigned int uint8_fast_t;
+typedef unsigned int uint16_fast_t;
+typedef unsigned int uint32_fast_t;
+typedef unsigned long long uint64_fast_t;
+
+typedef long intptr_t;
+typedef unsigned long uintptr_t;
+
+typedef long long intmax_t;
+typedef unsigned long long uintmax_t;
+
+typedef long register_t;
+typedef unsigned long u_register_t;
diff --git a/include/lib/libc/aarch32/stdio_.h b/include/lib/libc/aarch32/stdio_.h
new file mode 100644
index 00000000..50d3cc2e
--- /dev/null
+++ b/include/lib/libc/aarch32/stdio_.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STDIO__H
+#define STDIO__H
+
+#ifndef SIZET_
+typedef unsigned int size_t;
+#define SIZET_
+#endif
+
+#ifndef SSIZET_
+typedef int ssize_t;
+#define SSIZET_
+#endif
+
+#endif /* STDIO__H */
diff --git a/include/lib/libc/aarch32/stdlib_.h b/include/lib/libc/aarch32/stdlib_.h
new file mode 100644
index 00000000..9c07857a
--- /dev/null
+++ b/include/lib/libc/aarch32/stdlib_.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STDLIB__H
+#define STDLIB__H
+
+#ifndef SIZET_
+typedef unsigned int size_t;
+#define SIZET_
+#endif
+
+#define EXIT_FAILURE 1
+#define EXIT_SUCCESS 0
+
+#endif /* STDLIB__H */
diff --git a/include/lib/libc/aarch32/string_.h b/include/lib/libc/aarch32/string_.h
new file mode 100644
index 00000000..4e139b0d
--- /dev/null
+++ b/include/lib/libc/aarch32/string_.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STRING__H
+#define STRING__H
+
+#ifndef SIZET_
+typedef unsigned int size_t;
+#define SIZET_
+#endif
+
+#endif /* STRING__H */
diff --git a/include/lib/libc/aarch32/time_.h b/include/lib/libc/aarch32/time_.h
new file mode 100644
index 00000000..a9169c29
--- /dev/null
+++ b/include/lib/libc/aarch32/time_.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef TIME__H
+#define TIME__H
+
+#ifndef SIZET_
+typedef unsigned int size_t;
+#define SIZET_
+#endif
+
+typedef long int time_t;
+
+#endif /* TIME__H */
diff --git a/include/lib/libc/aarch64/endian_.h b/include/lib/libc/aarch64/endian_.h
new file mode 100644
index 00000000..7c79fd43
--- /dev/null
+++ b/include/lib/libc/aarch64/endian_.h
@@ -0,0 +1,128 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2001 David E. O'Brien
+ *
+ * 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. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ * @(#)endian.h 8.1 (Berkeley) 6/10/93
+ * $NetBSD: endian.h,v 1.7 1999/08/21 05:53:51 simonb Exp $
+ * $FreeBSD$
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef ENDIAN__H
+#define ENDIAN__H
+
+#include <stdint.h>
+
+/*
+ * Definitions for byte order, according to byte significance from low
+ * address to high.
+ */
+#define _LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define _BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define _PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */
+
+#define _BYTE_ORDER _LITTLE_ENDIAN
+
+#if __BSD_VISIBLE
+#define LITTLE_ENDIAN _LITTLE_ENDIAN
+#define BIG_ENDIAN _BIG_ENDIAN
+#define PDP_ENDIAN _PDP_ENDIAN
+#define BYTE_ORDER _BYTE_ORDER
+#endif
+
+#define _QUAD_HIGHWORD 1
+#define _QUAD_LOWWORD 0
+#define __ntohl(x) (__bswap32(x))
+#define __ntohs(x) (__bswap16(x))
+#define __htonl(x) (__bswap32(x))
+#define __htons(x) (__bswap16(x))
+
+static __inline uint64_t
+__bswap64(uint64_t x)
+{
+ uint64_t ret;
+
+ __asm __volatile("rev %0, %1\n"
+ : "=&r" (ret), "+r" (x));
+
+ return (ret);
+}
+
+static __inline uint32_t
+__bswap32_var(uint32_t v)
+{
+ uint32_t ret;
+
+ __asm __volatile("rev32 %x0, %x1\n"
+ : "=&r" (ret), "+r" (v));
+
+ return (ret);
+}
+
+static __inline uint16_t
+__bswap16_var(uint16_t v)
+{
+ uint32_t ret;
+
+ __asm __volatile("rev16 %w0, %w1\n"
+ : "=&r" (ret), "+r" (v));
+
+ return ((uint16_t)ret);
+}
+
+#ifdef __OPTIMIZE__
+
+#define __bswap32_constant(x) \
+ ((((x) & 0xff000000U) >> 24) | \
+ (((x) & 0x00ff0000U) >> 8) | \
+ (((x) & 0x0000ff00U) << 8) | \
+ (((x) & 0x000000ffU) << 24))
+
+#define __bswap16_constant(x) \
+ ((((x) & 0xff00) >> 8) | \
+ (((x) & 0x00ff) << 8))
+
+#define __bswap16(x) \
+ ((uint16_t)(__builtin_constant_p(x) ? \
+ __bswap16_constant((uint16_t)(x)) : \
+ __bswap16_var(x)))
+
+#define __bswap32(x) \
+ ((uint32_t)(__builtin_constant_p(x) ? \
+ __bswap32_constant((uint32_t)(x)) : \
+ __bswap32_var(x)))
+
+#else
+#define __bswap16(x) __bswap16_var(x)
+#define __bswap32(x) __bswap32_var(x)
+
+#endif /* __OPTIMIZE__ */
+#endif /* ENDIAN__H */
diff --git a/include/lib/libc/aarch64/limits_.h b/include/lib/libc/aarch64/limits_.h
new file mode 100644
index 00000000..e36cfe7d
--- /dev/null
+++ b/include/lib/libc/aarch64/limits_.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#define SCHAR_MAX 0x7F
+#define SCHAR_MIN (-SCHAR_MIN - 1)
+#define CHAR_MAX 0x7F
+#define CHAR_MIN (-CHAR_MAX - 1)
+#define UCHAR_MAX 0xFFU
+#define SHRT_MAX 0x7FFF
+#define SHRT_MIN (-SHRT_MAX - 1)
+#define USHRT_MAX 0xFFFFU
+#define INT_MAX 0x7FFFFFFF
+#define INT_MIN (-INT_MAX - 1)
+#define UINT_MAX 0xFFFFFFFFU
+#define LONG_MAX 0x7FFFFFFFFFFFFFFFL
+#define LONG_MIN (-LONG_MAX - 1L)
+#define ULONG_MAX 0xFFFFFFFFFFFFFFFFUL
+#define LLONG_MAX 0x7FFFFFFFFFFFFFFFLL
+#define LLONG_MIN (-LLONG_MAX - 1LL)
+#define ULLONG_MAX 0xFFFFFFFFFFFFFFFFULL
+
+#define __LONG_BIT 64
+#define __WORD_BIT 32
diff --git a/include/lib/libc/aarch64/setjmp_.h b/include/lib/libc/aarch64/setjmp_.h
new file mode 100644
index 00000000..174b3eb1
--- /dev/null
+++ b/include/lib/libc/aarch64/setjmp_.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef SETJMP__H
+#define SETJMP__H
+
+#define JMP_CTX_X19 0x0
+#define JMP_CTX_X21 0x10
+#define JMP_CTX_X23 0x20
+#define JMP_CTX_X25 0x30
+#define JMP_CTX_X27 0x40
+#define JMP_CTX_X29 0x50
+#define JMP_CTX_SP 0x60
+#define JMP_CTX_END 0x70 /* Aligned to 16 bytes */
+
+#define JMP_SIZE (JMP_CTX_END >> 3)
+
+#ifndef __ASSEMBLY__
+
+#include <cdefs.h>
+
+/* Jump buffer hosting x18 - x30 and sp_el0 registers */
+typedef uint64_t jmp_buf[JMP_SIZE] __aligned(16);
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* SETJMP__H */
diff --git a/include/lib/libc/aarch64/stddef_.h b/include/lib/libc/aarch64/stddef_.h
new file mode 100644
index 00000000..b7d8209a
--- /dev/null
+++ b/include/lib/libc/aarch64/stddef_.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STDDEF__H
+#define STDDEF__H
+
+#ifndef SIZET_
+typedef unsigned long size_t;
+#define SIZET_
+#endif
+
+#ifndef _PTRDIFF_T
+typedef long ptrdiff_t;
+#define _PTRDIFF_T
+#endif
+
+#endif /* STDDEF__H */
diff --git a/include/lib/libc/aarch64/stdint_.h b/include/lib/libc/aarch64/stdint_.h
new file mode 100644
index 00000000..b99be304
--- /dev/null
+++ b/include/lib/libc/aarch64/stdint_.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#define INT8_MAX 0x7F
+#define INT8_MIN (-INT8_MAX - 1)
+#define UINT8_MAX 0xFFU
+
+#define INT16_MAX 0x7FFF
+#define INT16_MIN (-INT16_MAX - 1)
+#define UINT16_MAX 0xFFFFU
+
+#define INT32_MAX 0x7FFFFFFF
+#define INT32_MIN (-INT32_MAX - 1)
+#define UINT32_MAX 0xFFFFFFFFU
+
+#define INT64_MAX 0x7FFFFFFFFFFFFFFFLL
+#define INT64_MIN (-INT64_MAX - 1LL)
+#define UINT64_MAX 0xFFFFFFFFFFFFFFFFULL
+
+#define INT_LEAST8_MIN INT8_MIN
+#define INT_LEAST8_MAX INT8_MAX
+#define UINT_LEAST8_MAX UINT8_MAX
+
+#define INT_LEAST16_MIN INT16_MIN
+#define INT_LEAST16_MAX INT16_MAX
+#define UINT_LEAST16_MAX UINT16_MAX
+
+#define INT_LEAST32_MIN INT32_MIN
+#define INT_LEAST32_MAX INT32_MAX
+#define UINT_LEAST32_MAX UINT32_MAX
+
+#define INT_LEAST64_MIN INT64_MIN
+#define INT_LEAST64_MAX INT64_MAX
+#define UINT_LEAST64_MAX UINT64_MAX
+
+#define INT_FAST8_MIN INT32_MIN
+#define INT_FAST8_MAX INT32_MAX
+#define UINT_FAST8_MAX UINT32_MAX
+
+#define INT_FAST16_MIN INT32_MIN
+#define INT_FAST16_MAX INT32_MAX
+#define UINT_FAST16_MAX UINT32_MAX
+
+#define INT_FAST32_MIN INT32_MIN
+#define INT_FAST32_MAX INT32_MAX
+#define UINT_FAST32_MAX UINT32_MAX
+
+#define INT_FAST64_MIN INT64_MIN
+#define INT_FAST64_MAX INT64_MAX
+#define UINT_FAST64_MAX UINT64_MAX
+
+#define INTPTR_MIN INT64_MIN
+#define INTPTR_MAX INT64_MAX
+#define UINTPTR_MAX UINT64_MAX
+
+#define INTMAX_MIN INT64_MIN
+#define INTMAX_MAX INT64_MAX
+#define UINTMAX_MAX UINT64_MAX
+
+#define PTRDIFF_MIN INT64_MIN
+#define PTRDIFF_MAX INT64_MAX
+
+#define SIZE_MAX UINT64_MAX
+
+#define INT8_C(x) x
+#define INT16_C(x) x
+#define INT32_C(x) x
+#define INT64_C(x) x ## LL
+
+#define UINT8_C(x) x
+#define UINT16_C(x) x
+#define UINT32_C(x) x ## U
+#define UINT64_C(x) x ## ULL
+
+#define INTMAX_C(x) x ## L
+#define UINTMAX_C(x) x ## ULL
+
+typedef signed char int8_t;
+typedef short int16_t;
+typedef int int32_t;
+typedef long long int64_t;
+
+typedef unsigned char uint8_t;
+typedef unsigned short uint16_t;
+typedef unsigned int uint32_t;
+typedef unsigned long long uint64_t;
+
+typedef signed char int8_least_t;
+typedef short int16_least_t;
+typedef int int32_least_t;
+typedef long long int64_least_t;
+
+typedef unsigned char uint8_least_t;
+typedef unsigned short uint16_least_t;
+typedef unsigned int uint32_least_t;
+typedef unsigned long long uint64_least_t;
+
+typedef int int8_fast_t;
+typedef int int16_fast_t;
+typedef int int32_fast_t;
+typedef long long int64_fast_t;
+
+typedef unsigned int uint8_fast_t;
+typedef unsigned int uint16_fast_t;
+typedef unsigned int uint32_fast_t;
+typedef unsigned long long uint64_fast_t;
+
+typedef long intptr_t;
+typedef unsigned long uintptr_t;
+
+typedef long intmax_t;
+typedef unsigned long uintmax_t;
+
+typedef long register_t;
+typedef unsigned long u_register_t;
diff --git a/include/lib/libc/aarch64/stdio_.h b/include/lib/libc/aarch64/stdio_.h
new file mode 100644
index 00000000..09b0172d
--- /dev/null
+++ b/include/lib/libc/aarch64/stdio_.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STDIO__H
+#define STDIO__H
+
+#ifndef SIZET_
+typedef unsigned long size_t;
+#define SIZET_
+#endif
+
+#ifndef SSIZET_
+typedef long ssize_t;
+#define SSIZET_
+#endif
+
+#endif /* STDIO__H */
diff --git a/include/lib/libc/aarch64/stdlib_.h b/include/lib/libc/aarch64/stdlib_.h
new file mode 100644
index 00000000..81a39d14
--- /dev/null
+++ b/include/lib/libc/aarch64/stdlib_.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STDLIB__H
+#define STDLIB__H
+
+#ifndef SIZET_
+typedef unsigned long size_t;
+#define SIZET_
+#endif
+
+#define EXIT_FAILURE 1
+#define EXIT_SUCCESS 0
+
+#endif /* STDLIB__H */
diff --git a/include/lib/libc/aarch64/string_.h b/include/lib/libc/aarch64/string_.h
new file mode 100644
index 00000000..71c51a6c
--- /dev/null
+++ b/include/lib/libc/aarch64/string_.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STRING__H
+#define STRING__H
+
+#ifndef SIZET_
+typedef unsigned long size_t;
+#define SIZET_
+#endif
+
+#endif /* STRING__H */
diff --git a/include/lib/libc/aarch64/time_.h b/include/lib/libc/aarch64/time_.h
new file mode 100644
index 00000000..68ab1b8d
--- /dev/null
+++ b/include/lib/libc/aarch64/time_.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef TIME__H
+#define TIME__H
+
+#ifndef SIZET_
+typedef unsigned long size_t;
+#define SIZET_
+#endif
+
+typedef long int time_t;
+
+#endif /* TIME__H */
diff --git a/include/lib/libc/assert.h b/include/lib/libc/assert.h
new file mode 100644
index 00000000..d04f9dc0
--- /dev/null
+++ b/include/lib/libc/assert.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef ASSERT_H
+#define ASSERT_H
+
+#include <cdefs.h>
+
+#include <platform_def.h>
+
+#include <common/debug.h>
+
+#ifndef PLAT_LOG_LEVEL_ASSERT
+#define PLAT_LOG_LEVEL_ASSERT LOG_LEVEL
+#endif
+
+#if ENABLE_ASSERTIONS
+# if PLAT_LOG_LEVEL_ASSERT >= LOG_LEVEL_VERBOSE
+# define assert(e) ((e) ? (void)0 : __assert(__FILE__, __LINE__, #e))
+# elif PLAT_LOG_LEVEL_ASSERT >= LOG_LEVEL_INFO
+# define assert(e) ((e) ? (void)0 : __assert(__FILE__, __LINE__))
+# else
+# define assert(e) ((e) ? (void)0 : __assert())
+# endif
+#else
+#define assert(e) ((void)0)
+#endif /* ENABLE_ASSERTIONS */
+
+#if PLAT_LOG_LEVEL_ASSERT >= LOG_LEVEL_VERBOSE
+__dead2 void __assert(const char *file, unsigned int line,
+ const char *assertion);
+#elif PLAT_LOG_LEVEL_ASSERT >= LOG_LEVEL_INFO
+__dead2 void __assert(const char *file, unsigned int line);
+#else
+__dead2 void __assert(void);
+#endif
+
+#endif /* ASSERT_H */
diff --git a/include/lib/libc/cdefs.h b/include/lib/libc/cdefs.h
new file mode 100644
index 00000000..0d007225
--- /dev/null
+++ b/include/lib/libc/cdefs.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef CDEFS_H
+#define CDEFS_H
+
+#define __dead2 __attribute__((__noreturn__))
+#define __deprecated __attribute__((__deprecated__))
+#define __packed __attribute__((__packed__))
+#define __used __attribute__((__used__))
+#define __unused __attribute__((__unused__))
+#define __aligned(x) __attribute__((__aligned__(x)))
+#define __section(x) __attribute__((__section__(x)))
+#if RECLAIM_INIT_CODE
+/*
+ * Add each function to a section that is unique so the functions can still
+ * be garbage collected
+ */
+#define __init __section(".text.init." __FILE__ "." __XSTRING(__LINE__))
+#else
+#define __init
+#endif
+
+#define __printflike(fmtarg, firstvararg) \
+ __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
+
+#define __weak_reference(sym, alias) \
+ __asm__(".weak alias"); \
+ __asm__(".equ alias, sym")
+
+#define __STRING(x) #x
+#define __XSTRING(x) __STRING(x)
+
+#endif /* CDEFS_H */
diff --git a/include/lib/libc/endian.h b/include/lib/libc/endian.h
new file mode 100644
index 00000000..4100f573
--- /dev/null
+++ b/include/lib/libc/endian.h
@@ -0,0 +1,191 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2002 Thomas Moestl <tmm@FreeBSD.org>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ * $FreeBSD$
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef ENDIAN_H
+#define ENDIAN_H
+
+#include <cdefs.h>
+#include <stdint.h>
+#include <endian_.h>
+
+/*
+ * General byte order swapping functions.
+ */
+#define bswap16(x) __bswap16(x)
+#define bswap32(x) __bswap32(x)
+#define bswap64(x) __bswap64(x)
+
+/*
+ * Host to big endian, host to little endian, big endian to host, and little
+ * endian to host byte order functions as detailed in byteorder(9).
+ */
+#if _BYTE_ORDER == _LITTLE_ENDIAN
+#define htobe16(x) bswap16((x))
+#define htobe32(x) bswap32((x))
+#define htobe64(x) bswap64((x))
+#define htole16(x) ((uint16_t)(x))
+#define htole32(x) ((uint32_t)(x))
+#define htole64(x) ((uint64_t)(x))
+
+#define be16toh(x) bswap16((x))
+#define be32toh(x) bswap32((x))
+#define be64toh(x) bswap64((x))
+#define le16toh(x) ((uint16_t)(x))
+#define le32toh(x) ((uint32_t)(x))
+#define le64toh(x) ((uint64_t)(x))
+#else /* _BYTE_ORDER != _LITTLE_ENDIAN */
+#define htobe16(x) ((uint16_t)(x))
+#define htobe32(x) ((uint32_t)(x))
+#define htobe64(x) ((uint64_t)(x))
+#define htole16(x) bswap16((x))
+#define htole32(x) bswap32((x))
+#define htole64(x) bswap64((x))
+
+#define be16toh(x) ((uint16_t)(x))
+#define be32toh(x) ((uint32_t)(x))
+#define be64toh(x) ((uint64_t)(x))
+#define le16toh(x) bswap16((x))
+#define le32toh(x) bswap32((x))
+#define le64toh(x) bswap64((x))
+#endif /* _BYTE_ORDER == _LITTLE_ENDIAN */
+
+/* Alignment-agnostic encode/decode bytestream to/from little/big endian. */
+
+static __inline uint16_t
+be16dec(const void *pp)
+{
+ uint8_t const *p = (uint8_t const *)pp;
+
+ return ((p[0] << 8) | p[1]);
+}
+
+static __inline uint32_t
+be32dec(const void *pp)
+{
+ uint8_t const *p = (uint8_t const *)pp;
+
+ return (((unsigned)p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]);
+}
+
+static __inline uint64_t
+be64dec(const void *pp)
+{
+ uint8_t const *p = (uint8_t const *)pp;
+
+ return (((uint64_t)be32dec(p) << 32) | be32dec(p + 4));
+}
+
+static __inline uint16_t
+le16dec(const void *pp)
+{
+ uint8_t const *p = (uint8_t const *)pp;
+
+ return ((p[1] << 8) | p[0]);
+}
+
+static __inline uint32_t
+le32dec(const void *pp)
+{
+ uint8_t const *p = (uint8_t const *)pp;
+
+ return (((unsigned)p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0]);
+}
+
+static __inline uint64_t
+le64dec(const void *pp)
+{
+ uint8_t const *p = (uint8_t const *)pp;
+
+ return (((uint64_t)le32dec(p + 4) << 32) | le32dec(p));
+}
+
+static __inline void
+be16enc(void *pp, uint16_t u)
+{
+ uint8_t *p = (uint8_t *)pp;
+
+ p[0] = (u >> 8) & 0xff;
+ p[1] = u & 0xff;
+}
+
+static __inline void
+be32enc(void *pp, uint32_t u)
+{
+ uint8_t *p = (uint8_t *)pp;
+
+ p[0] = (u >> 24) & 0xff;
+ p[1] = (u >> 16) & 0xff;
+ p[2] = (u >> 8) & 0xff;
+ p[3] = u & 0xff;
+}
+
+static __inline void
+be64enc(void *pp, uint64_t u)
+{
+ uint8_t *p = (uint8_t *)pp;
+
+ be32enc(p, (uint32_t)(u >> 32));
+ be32enc(p + 4, (uint32_t)(u & 0xffffffffU));
+}
+
+static __inline void
+le16enc(void *pp, uint16_t u)
+{
+ uint8_t *p = (uint8_t *)pp;
+
+ p[0] = u & 0xff;
+ p[1] = (u >> 8) & 0xff;
+}
+
+static __inline void
+le32enc(void *pp, uint32_t u)
+{
+ uint8_t *p = (uint8_t *)pp;
+
+ p[0] = u & 0xff;
+ p[1] = (u >> 8) & 0xff;
+ p[2] = (u >> 16) & 0xff;
+ p[3] = (u >> 24) & 0xff;
+}
+
+static __inline void
+le64enc(void *pp, uint64_t u)
+{
+ uint8_t *p = (uint8_t *)pp;
+
+ le32enc(p, (uint32_t)(u & 0xffffffffU));
+ le32enc(p + 4, (uint32_t)(u >> 32));
+}
+
+#endif /* ENDIAN_H */
diff --git a/include/lib/libc/errno.h b/include/lib/libc/errno.h
new file mode 100644
index 00000000..029912f6
--- /dev/null
+++ b/include/lib/libc/errno.h
@@ -0,0 +1,169 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1982, 1986, 1989, 1993
+ * The Regents of the University of California. All rights reserved.
+ * (c) UNIX System Laboratories, Inc.
+ * All or some portions of this file are derived from material licensed
+ * to the University of California by American Telephone and Telegraph
+ * Co. or Unix System Laboratories, Inc. and are reproduced herein with
+ * the permission of UNIX System Laboratories, Inc.
+ *
+ * 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. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ *
+ * @(#)errno.h 8.5 (Berkeley) 1/21/94
+ * $FreeBSD$
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef ERRNO_H
+#define ERRNO_H
+
+#define EPERM 1 /* Operation not permitted */
+#define ENOENT 2 /* No such file or directory */
+#define ESRCH 3 /* No such process */
+#define EINTR 4 /* Interrupted system call */
+#define EIO 5 /* Input/output error */
+#define ENXIO 6 /* Device not configured */
+#define E2BIG 7 /* Argument list too long */
+#define ENOEXEC 8 /* Exec format error */
+#define EBADF 9 /* Bad file descriptor */
+#define ECHILD 10 /* No child processes */
+#define EDEADLK 11 /* Resource deadlock avoided */
+ /* 11 was EAGAIN */
+#define ENOMEM 12 /* Cannot allocate memory */
+#define EACCES 13 /* Permission denied */
+#define EFAULT 14 /* Bad address */
+#define ENOTBLK 15 /* Block device required */
+#define EBUSY 16 /* Device busy */
+#define EEXIST 17 /* File exists */
+#define EXDEV 18 /* Cross-device link */
+#define ENODEV 19 /* Operation not supported by device */
+#define ENOTDIR 20 /* Not a directory */
+#define EISDIR 21 /* Is a directory */
+#define EINVAL 22 /* Invalid argument */
+#define ENFILE 23 /* Too many open files in system */
+#define EMFILE 24 /* Too many open files */
+#define ENOTTY 25 /* Inappropriate ioctl for device */
+#define ETXTBSY 26 /* Text file busy */
+#define EFBIG 27 /* File too large */
+#define ENOSPC 28 /* No space left on device */
+#define ESPIPE 29 /* Illegal seek */
+#define EROFS 30 /* Read-only filesystem */
+#define EMLINK 31 /* Too many links */
+#define EPIPE 32 /* Broken pipe */
+
+/* math software */
+#define EDOM 33 /* Numerical argument out of domain */
+#define ERANGE 34 /* Result too large */
+
+/* non-blocking and interrupt i/o */
+#define EAGAIN 35 /* Resource temporarily unavailable */
+#define EWOULDBLOCK EAGAIN /* Operation would block */
+#define EINPROGRESS 36 /* Operation now in progress */
+#define EALREADY 37 /* Operation already in progress */
+
+/* ipc/network software -- argument errors */
+#define ENOTSOCK 38 /* Socket operation on non-socket */
+#define EDESTADDRREQ 39 /* Destination address required */
+#define EMSGSIZE 40 /* Message too long */
+#define EPROTOTYPE 41 /* Protocol wrong type for socket */
+#define ENOPROTOOPT 42 /* Protocol not available */
+#define EPROTONOSUPPORT 43 /* Protocol not supported */
+#define ESOCKTNOSUPPORT 44 /* Socket type not supported */
+#define EOPNOTSUPP 45 /* Operation not supported */
+#define ENOTSUP EOPNOTSUPP /* Operation not supported */
+#define EPFNOSUPPORT 46 /* Protocol family not supported */
+#define EAFNOSUPPORT 47 /* Address family not supported by protocol family */
+#define EADDRINUSE 48 /* Address already in use */
+#define EADDRNOTAVAIL 49 /* Can't assign requested address */
+
+/* ipc/network software -- operational errors */
+#define ENETDOWN 50 /* Network is down */
+#define ENETUNREACH 51 /* Network is unreachable */
+#define ENETRESET 52 /* Network dropped connection on reset */
+#define ECONNABORTED 53 /* Software caused connection abort */
+#define ECONNRESET 54 /* Connection reset by peer */
+#define ENOBUFS 55 /* No buffer space available */
+#define EISCONN 56 /* Socket is already connected */
+#define ENOTCONN 57 /* Socket is not connected */
+#define ESHUTDOWN 58 /* Can't send after socket shutdown */
+#define ETOOMANYREFS 59 /* Too many references: can't splice */
+#define ETIMEDOUT 60 /* Operation timed out */
+#define ECONNREFUSED 61 /* Connection refused */
+
+#define ELOOP 62 /* Too many levels of symbolic links */
+#define ENAMETOOLONG 63 /* File name too long */
+
+/* should be rearranged */
+#define EHOSTDOWN 64 /* Host is down */
+#define EHOSTUNREACH 65 /* No route to host */
+#define ENOTEMPTY 66 /* Directory not empty */
+
+/* quotas & mush */
+#define EPROCLIM 67 /* Too many processes */
+#define EUSERS 68 /* Too many users */
+#define EDQUOT 69 /* Disc quota exceeded */
+
+/* Network File System */
+#define ESTALE 70 /* Stale NFS file handle */
+#define EREMOTE 71 /* Too many levels of remote in path */
+#define EBADRPC 72 /* RPC struct is bad */
+#define ERPCMISMATCH 73 /* RPC version wrong */
+#define EPROGUNAVAIL 74 /* RPC prog. not avail */
+#define EPROGMISMATCH 75 /* Program version wrong */
+#define EPROCUNAVAIL 76 /* Bad procedure for program */
+
+#define ENOLCK 77 /* No locks available */
+#define ENOSYS 78 /* Function not implemented */
+
+#define EFTYPE 79 /* Inappropriate file type or format */
+#define EAUTH 80 /* Authentication error */
+#define ENEEDAUTH 81 /* Need authenticator */
+#define EIDRM 82 /* Identifier removed */
+#define ENOMSG 83 /* No message of desired type */
+#define EOVERFLOW 84 /* Value too large to be stored in data type */
+#define ECANCELED 85 /* Operation canceled */
+#define EILSEQ 86 /* Illegal byte sequence */
+#define ENOATTR 87 /* Attribute not found */
+
+#define EDOOFUS 88 /* Programming error */
+
+#define EBADMSG 89 /* Bad message */
+#define EMULTIHOP 90 /* Multihop attempted */
+#define ENOLINK 91 /* Link has been severed */
+#define EPROTO 92 /* Protocol error */
+
+#define ENOTCAPABLE 93 /* Capabilities insufficient */
+#define ECAPMODE 94 /* Not permitted in capability mode */
+#define ENOTRECOVERABLE 95 /* State not recoverable */
+#define EOWNERDEAD 96 /* Previous owner died */
+
+#define ELAST 96 /* Must be equal largest errno */
+
+#endif /* ERRNO_H */
diff --git a/include/lib/libc/limits.h b/include/lib/libc/limits.h
new file mode 100644
index 00000000..41bb6584
--- /dev/null
+++ b/include/lib/libc/limits.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2012-2017 Roberto E. Vargas Caballero
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef LIMITS_H
+#define LIMITS_H
+
+#include <limits_.h>
+
+#define CHAR_BIT 8
+#define MB_LEN_MAX 1
+
+#endif /* LIMITS_H */
diff --git a/include/lib/libc/setjmp.h b/include/lib/libc/setjmp.h
new file mode 100644
index 00000000..5661201a
--- /dev/null
+++ b/include/lib/libc/setjmp.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef SETJMP_H
+#define SETJMP_H
+
+#include <setjmp_.h>
+
+#ifndef __ASSEMBLY__
+
+#include <cdefs.h>
+
+int setjmp(jmp_buf env);
+__dead2 void longjmp(jmp_buf env, int val);
+
+#endif /* __ASSEMBLY__ */
+#endif /* SETJMP_H */
diff --git a/include/lib/libc/stdarg.h b/include/lib/libc/stdarg.h
new file mode 100644
index 00000000..e260b9b5
--- /dev/null
+++ b/include/lib/libc/stdarg.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2012-2017 Roberto E. Vargas Caballero
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef STDARG_H
+#define STDARG_H
+
+#define va_list __builtin_va_list
+#define va_start(ap, last) __builtin_va_start(ap, last)
+#define va_end(ap) __builtin_va_end(ap)
+#define va_copy(to, from) __builtin_va_copy(to, from)
+#define va_arg(to, type) __builtin_va_arg(to, type)
+
+#endif /* STDARG_H */
diff --git a/include/lib/libc/stdbool.h b/include/lib/libc/stdbool.h
new file mode 100644
index 00000000..e39aef7d
--- /dev/null
+++ b/include/lib/libc/stdbool.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STDBOOL_H
+#define STDBOOL_H
+
+#define bool _Bool
+
+#define true 1
+#define false 0
+
+#define __bool_true_false_are_defined 1
+
+#endif /* STDBOOL_H */
diff --git a/include/lib/libc/stddef.h b/include/lib/libc/stddef.h
new file mode 100644
index 00000000..c9957bdb
--- /dev/null
+++ b/include/lib/libc/stddef.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2012-2017 Roberto E. Vargas Caballero
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef STDDEF_H
+#define STDDEF_H
+
+#include <stddef_.h>
+
+#ifndef NULL
+#define NULL ((void *) 0)
+#endif
+
+#define offsetof(st, m) __builtin_offsetof(st, m)
+
+#endif /* STDDEF_H */
diff --git a/include/lib/libc/stdint.h b/include/lib/libc/stdint.h
new file mode 100644
index 00000000..d44a973f
--- /dev/null
+++ b/include/lib/libc/stdint.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2012-2017 Roberto E. Vargas Caballero
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef STDINT_H
+#define STDINT_H
+
+#include <stdint_.h>
+
+#endif /* STDINT_H */
diff --git a/include/lib/libc/stdio.h b/include/lib/libc/stdio.h
new file mode 100644
index 00000000..3d9323ef
--- /dev/null
+++ b/include/lib/libc/stdio.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2012-2017 Roberto E. Vargas Caballero
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef STDIO_H
+#define STDIO_H
+
+#include <cdefs.h>
+#include <stdio_.h>
+
+#ifndef NULL
+#define NULL ((void *) 0)
+#endif
+
+#define EOF -1
+
+int printf(const char *fmt, ...) __printflike(1, 2);
+int snprintf(char *s, size_t n, const char *fmt, ...) __printflike(3, 4);
+
+#ifdef STDARG_H
+int vprintf(const char *fmt, va_list args);
+#endif
+
+int putchar(int c);
+int puts(const char *s);
+
+#endif /* STDIO_H */
diff --git a/include/lib/libc/stdlib.h b/include/lib/libc/stdlib.h
new file mode 100644
index 00000000..edd6265f
--- /dev/null
+++ b/include/lib/libc/stdlib.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2012-2017 Roberto E. Vargas Caballero
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef STDLIB_H
+#define STDLIB_H
+
+#include <stdlib_.h>
+
+#ifndef NULL
+#define NULL ((void *) 0)
+#endif
+
+#define _ATEXIT_MAX 1
+
+extern void abort(void);
+extern int atexit(void (*func)(void));
+extern void exit(int status);
+
+#endif /* STDLIB_H */
diff --git a/include/lib/libc/string.h b/include/lib/libc/string.h
new file mode 100644
index 00000000..ee6eeace
--- /dev/null
+++ b/include/lib/libc/string.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2012-2017 Roberto E. Vargas Caballero
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef STRING_H
+#define STRING_H
+
+#include <string_.h>
+
+#ifndef NULL
+#define NULL ((void *) 0)
+#endif
+
+void *memcpy(void *dst, const void *src, size_t len);
+void *memmove(void *dst, const void *src, size_t len);
+int memcmp(const void *s1, const void *s2, size_t len);
+int strcmp(const char *s1, const char *s2);
+int strncmp(const char *s1, const char *s2, size_t n);
+void *memchr(const void *src, int c, size_t len);
+char *strchr(const char *s, int c);
+void *memset(void *dst, int val, size_t count);
+size_t strlen(const char *s);
+size_t strnlen(const char *s, size_t maxlen);
+char *strrchr(const char *p, int ch);
+size_t strlcpy(char * dst, const char * src, size_t dsize);
+
+#endif /* STRING_H */
diff --git a/include/lib/libc/time.h b/include/lib/libc/time.h
new file mode 100644
index 00000000..71d3e7ec
--- /dev/null
+++ b/include/lib/libc/time.h
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2012-2017 Roberto E. Vargas Caballero
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#ifndef TIME_H
+#define TIME_H
+
+#include <time_.h>
+
+#ifndef NULL
+#define NULL ((void *) 0)
+#endif
+
+#endif /* TIME_H */
diff --git a/lib/libc/aarch64/setjmp.S b/lib/libc/aarch64/setjmp.S
new file mode 100644
index 00000000..9d9eb49b
--- /dev/null
+++ b/lib/libc/aarch64/setjmp.S
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <asm_macros.S>
+#include <assert_macros.S>
+#include <setjmp.h>
+
+ .globl setjmp
+ .globl longjmp
+
+/*
+ * int setjmp(jmp_buf env);
+ */
+func setjmp
+ mov x7, sp
+
+ stp x19, x20, [x0, #JMP_CTX_X19]
+ stp x21, x22, [x0, #JMP_CTX_X21]
+ stp x23, x24, [x0, #JMP_CTX_X23]
+ stp x25, x26, [x0, #JMP_CTX_X25]
+ stp x27, x28, [x0, #JMP_CTX_X27]
+ stp x29, x30, [x0, #JMP_CTX_X29]
+ stp x7, xzr, [x0, #JMP_CTX_SP]
+
+ mov x0, #0
+ ret
+endfunc setjmp
+
+
+/*
+ * void longjmp(jmp_buf env, int val);
+ */
+func longjmp
+ ldp x7, xzr, [x0, #JMP_CTX_SP]
+
+#if ENABLE_ASSERTIONS
+ /*
+ * Since we're unwinding the stack, assert that the stack being reset to
+ * is shallower.
+ */
+ mov x19, sp
+ cmp x7, x19
+ ASM_ASSERT(ge)
+#endif
+
+ ldp x19, x20, [x0, #JMP_CTX_X19]
+ ldp x21, x22, [x0, #JMP_CTX_X21]
+ ldp x23, x24, [x0, #JMP_CTX_X23]
+ ldp x25, x26, [x0, #JMP_CTX_X25]
+ ldp x27, x28, [x0, #JMP_CTX_X27]
+ ldp x29, x30, [x0, #JMP_CTX_X29]
+
+ mov sp, x7
+
+ ands x0, x1, x1 /* Move val to x0 and set flags */
+ cinc x0, x0, eq /* If val is 0, return 1 */
+ ret
+endfunc longjmp
diff --git a/lib/libc/abort.c b/lib/libc/abort.c
new file mode 100644
index 00000000..432b1d07
--- /dev/null
+++ b/lib/libc/abort.c
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdlib.h>
+
+#include <common/debug.h>
+
+void abort(void)
+{
+ ERROR("ABORT\n");
+ panic();
+}
diff --git a/lib/libc/assert.c b/lib/libc/assert.c
new file mode 100644
index 00000000..60f1a866
--- /dev/null
+++ b/lib/libc/assert.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <cdefs.h>
+#include <stdio.h>
+
+#include <common/debug.h>
+#include <drivers/console.h>
+#include <plat/common/platform.h>
+
+/*
+ * Only print the output if PLAT_LOG_LEVEL_ASSERT is higher or equal to
+ * LOG_LEVEL_INFO, which is the default value for builds with DEBUG=1.
+ */
+
+#if PLAT_LOG_LEVEL_ASSERT >= LOG_LEVEL_VERBOSE
+void __assert(const char *file, unsigned int line, const char *assertion)
+{
+ printf("ASSERT: %s:%d:%s\n", file, line, assertion);
+ backtrace("assert");
+ (void)console_flush();
+ plat_panic_handler();
+}
+#elif PLAT_LOG_LEVEL_ASSERT >= LOG_LEVEL_INFO
+void __assert(const char *file, unsigned int line)
+{
+ printf("ASSERT: %s:%d\n", file, line);
+ backtrace("assert");
+ (void)console_flush();
+ plat_panic_handler();
+}
+#else
+void __assert(void)
+{
+ backtrace("assert");
+ (void)console_flush();
+ plat_panic_handler();
+}
+#endif
diff --git a/lib/libc/exit.c b/lib/libc/exit.c
new file mode 100644
index 00000000..f4ffe27c
--- /dev/null
+++ b/lib/libc/exit.c
@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdlib.h>
+
+static void (*exitfun)(void);
+
+void exit(int status)
+{
+ if (exitfun != NULL)
+ (*exitfun)();
+ for (;;)
+ ;
+}
+
+int atexit(void (*fun)(void))
+{
+ if (exitfun != NULL)
+ return -1;
+ exitfun = fun;
+
+ return 0;
+}
diff --git a/lib/libc/libc.mk b/lib/libc/libc.mk
new file mode 100644
index 00000000..e1b5560f
--- /dev/null
+++ b/lib/libc/libc.mk
@@ -0,0 +1,34 @@
+#
+# Copyright (c) 2016-2019, ARM Limited and Contributors. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+LIBC_SRCS := $(addprefix lib/libc/, \
+ abort.c \
+ assert.c \
+ exit.c \
+ memchr.c \
+ memcmp.c \
+ memcpy.c \
+ memmove.c \
+ memset.c \
+ printf.c \
+ putchar.c \
+ puts.c \
+ snprintf.c \
+ strchr.c \
+ strcmp.c \
+ strlcpy.c \
+ strlen.c \
+ strncmp.c \
+ strnlen.c \
+ strrchr.c)
+
+ifeq (${ARCH},aarch64)
+LIBC_SRCS += $(addprefix lib/libc/aarch64/, \
+ setjmp.S)
+endif
+
+INCLUDES += -Iinclude/lib/libc \
+ -Iinclude/lib/libc/$(ARCH) \
diff --git a/lib/libc/memchr.c b/lib/libc/memchr.c
new file mode 100644
index 00000000..2eba47c9
--- /dev/null
+++ b/lib/libc/memchr.c
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stddef.h>
+
+void *memchr(const void *src, int c, size_t len)
+{
+ const char *s = src;
+
+ while (len--) {
+ if (*s == c)
+ return (void *) s;
+ s++;
+ }
+
+ return NULL;
+}
diff --git a/lib/libc/memcmp.c b/lib/libc/memcmp.c
new file mode 100644
index 00000000..a4c798b0
--- /dev/null
+++ b/lib/libc/memcmp.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stddef.h>
+
+int memcmp(const void *s1, const void *s2, size_t len)
+{
+ const unsigned char *s = s1;
+ const unsigned char *d = s2;
+ unsigned char sc;
+ unsigned char dc;
+
+ while (len--) {
+ sc = *s++;
+ dc = *d++;
+ if (sc - dc)
+ return (sc - dc);
+ }
+
+ return 0;
+}
diff --git a/lib/libc/memcpy.c b/lib/libc/memcpy.c
new file mode 100644
index 00000000..fc0c9fe8
--- /dev/null
+++ b/lib/libc/memcpy.c
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stddef.h>
+
+void *memcpy(void *dst, const void *src, size_t len)
+{
+ const char *s = src;
+ char *d = dst;
+
+ while (len--)
+ *d++ = *s++;
+
+ return dst;
+}
diff --git a/lib/libc/memmove.c b/lib/libc/memmove.c
new file mode 100644
index 00000000..63acf267
--- /dev/null
+++ b/lib/libc/memmove.c
@@ -0,0 +1,31 @@
+/*
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <string.h>
+
+void *memmove(void *dst, const void *src, size_t len)
+{
+ /*
+ * The following test makes use of unsigned arithmetic overflow to
+ * more efficiently test the condition !(src <= dst && dst < str+len).
+ * It also avoids the situation where the more explicit test would give
+ * incorrect results were the calculation str+len to overflow (though
+ * that issue is probably moot as such usage is probably undefined
+ * behaviour and a bug anyway.
+ */
+ if ((size_t)dst - (size_t)src >= len) {
+ /* destination not in source data, so can safely use memcpy */
+ return memcpy(dst, src, len);
+ } else {
+ /* copy backwards... */
+ const char *end = dst;
+ const char *s = (const char *)src + len;
+ char *d = (char *)dst + len;
+ while (d != end)
+ *--d = *--s;
+ }
+ return dst;
+}
diff --git a/lib/libc/memset.c b/lib/libc/memset.c
new file mode 100644
index 00000000..03aa8096
--- /dev/null
+++ b/lib/libc/memset.c
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stddef.h>
+
+void *memset(void *dst, int val, size_t count)
+{
+ char *ptr = dst;
+
+ while (count--)
+ *ptr++ = val;
+
+ return dst;
+}
diff --git a/lib/libc/printf.c b/lib/libc/printf.c
new file mode 100644
index 00000000..2715a72d
--- /dev/null
+++ b/lib/libc/printf.c
@@ -0,0 +1,197 @@
+/*
+ * Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <common/debug.h>
+
+#define get_num_va_args(_args, _lcount) \
+ (((_lcount) > 1) ? va_arg(_args, long long int) : \
+ (((_lcount) == 1) ? va_arg(_args, long int) : \
+ va_arg(_args, int)))
+
+#define get_unum_va_args(_args, _lcount) \
+ (((_lcount) > 1) ? va_arg(_args, unsigned long long int) : \
+ (((_lcount) == 1) ? va_arg(_args, unsigned long int) : \
+ va_arg(_args, unsigned int)))
+
+static int string_print(const char *str)
+{
+ int count = 0;
+
+ assert(str != NULL);
+
+ for ( ; *str != '\0'; str++) {
+ (void)putchar(*str);
+ count++;
+ }
+
+ return count;
+}
+
+static int unsigned_num_print(unsigned long long int unum, unsigned int radix,
+ char padc, int padn)
+{
+ /* Just need enough space to store 64 bit decimal integer */
+ char num_buf[20];
+ int i = 0, count = 0;
+ unsigned int rem;
+
+ do {
+ rem = unum % radix;
+ if (rem < 0xa)
+ num_buf[i] = '0' + rem;
+ else
+ num_buf[i] = 'a' + (rem - 0xa);
+ i++;
+ unum /= radix;
+ } while (unum > 0U);
+
+ if (padn > 0) {
+ while (i < padn) {
+ (void)putchar(padc);
+ count++;
+ padn--;
+ }
+ }
+
+ while (--i >= 0) {
+ (void)putchar(num_buf[i]);
+ count++;
+ }
+
+ return count;
+}
+
+/*******************************************************************
+ * Reduced format print for Trusted firmware.
+ * The following type specifiers are supported by this print
+ * %x - hexadecimal format
+ * %s - string format
+ * %d or %i - signed decimal format
+ * %u - unsigned decimal format
+ * %p - pointer format
+ *
+ * The following length specifiers are supported by this print
+ * %l - long int (64-bit on AArch64)
+ * %ll - long long int (64-bit on AArch64)
+ * %z - size_t sized integer formats (64 bit on AArch64)
+ *
+ * The following padding specifiers are supported by this print
+ * %0NN - Left-pad the number with 0s (NN is a decimal number)
+ *
+ * The print exits on all other formats specifiers other than valid
+ * combinations of the above specifiers.
+ *******************************************************************/
+int vprintf(const char *fmt, va_list args)
+{
+ int l_count;
+ long long int num;
+ unsigned long long int unum;
+ char *str;
+ char padc = '\0'; /* Padding character */
+ int padn; /* Number of characters to pad */
+ int count = 0; /* Number of printed characters */
+
+ while (*fmt != '\0') {
+ l_count = 0;
+ padn = 0;
+
+ if (*fmt == '%') {
+ fmt++;
+ /* Check the format specifier */
+loop:
+ switch (*fmt) {
+ case 'i': /* Fall through to next one */
+ case 'd':
+ num = get_num_va_args(args, l_count);
+ if (num < 0) {
+ (void)putchar('-');
+ unum = (unsigned long long int)-num;
+ padn--;
+ } else
+ unum = (unsigned long long int)num;
+
+ count += unsigned_num_print(unum, 10,
+ padc, padn);
+ break;
+ case 's':
+ str = va_arg(args, char *);
+ count += string_print(str);
+ break;
+ case 'p':
+ unum = (uintptr_t)va_arg(args, void *);
+ if (unum > 0U) {
+ count += string_print("0x");
+ padn -= 2;
+ }
+
+ count += unsigned_num_print(unum, 16,
+ padc, padn);
+ break;
+ case 'x':
+ unum = get_unum_va_args(args, l_count);
+ count += unsigned_num_print(unum, 16,
+ padc, padn);
+ break;
+ case 'z':
+ if (sizeof(size_t) == 8U)
+ l_count = 2;
+
+ fmt++;
+ goto loop;
+ case 'l':
+ l_count++;
+ fmt++;
+ goto loop;
+ case 'u':
+ unum = get_unum_va_args(args, l_count);
+ count += unsigned_num_print(unum, 10,
+ padc, padn);
+ break;
+ case '0':
+ padc = '0';
+ padn = 0;
+ fmt++;
+
+ for (;;) {
+ char ch = *fmt;
+ if ((ch < '0') || (ch > '9')) {
+ goto loop;
+ }
+ padn = (padn * 10) + (ch - '0');
+ fmt++;
+ }
+ assert(0); /* Unreachable */
+ default:
+ /* Exit on any other format specifier */
+ return -1;
+ }
+ fmt++;
+ continue;
+ }
+ (void)putchar(*fmt);
+ fmt++;
+ count++;
+ }
+
+ return count;
+}
+
+int printf(const char *fmt, ...)
+{
+ int count;
+ va_list va;
+
+ va_start(va, fmt);
+ count = vprintf(fmt, va);
+ va_end(va);
+
+ return count;
+}
diff --git a/lib/libc/putchar.c b/lib/libc/putchar.c
new file mode 100644
index 00000000..037e28ac
--- /dev/null
+++ b/lib/libc/putchar.c
@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdio.h>
+
+#include <drivers/console.h>
+
+int putchar(int c)
+{
+ int res;
+ if (console_putc((unsigned char)c) >= 0)
+ res = c;
+ else
+ res = EOF;
+
+ return res;
+}
diff --git a/lib/libc/puts.c b/lib/libc/puts.c
new file mode 100644
index 00000000..2a0ca11c
--- /dev/null
+++ b/lib/libc/puts.c
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdio.h>
+
+int puts(const char *s)
+{
+ int count = 0;
+
+ while (*s != '\0') {
+ if (putchar(*s) == EOF)
+ return EOF;
+ s++;
+ count++;
+ }
+
+ if (putchar('\n') == EOF)
+ return EOF;
+
+ return count + 1;
+}
diff --git a/lib/libc/snprintf.c b/lib/libc/snprintf.c
new file mode 100644
index 00000000..38ad1c71
--- /dev/null
+++ b/lib/libc/snprintf.c
@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <stdarg.h>
+
+#include <common/debug.h>
+#include <plat/common/platform.h>
+
+static void string_print(char **s, size_t n, size_t *chars_printed,
+ const char *str)
+{
+ while (*str != '\0') {
+ if (*chars_printed < n) {
+ *(*s) = *str;
+ (*s)++;
+ }
+
+ (*chars_printed)++;
+ str++;
+ }
+}
+
+static void unsigned_dec_print(char **s, size_t n, size_t *chars_printed,
+ unsigned int unum)
+{
+ /* Enough for a 32-bit unsigned decimal integer (4294967295). */
+ char num_buf[10];
+ int i = 0;
+ unsigned int rem;
+
+ do {
+ rem = unum % 10U;
+ num_buf[i++] = '0' + rem;
+ unum /= 10U;
+ } while (unum > 0U);
+
+ while (--i >= 0) {
+ if (*chars_printed < n) {
+ *(*s) = num_buf[i];
+ (*s)++;
+ }
+
+ (*chars_printed)++;
+ }
+}
+
+/*******************************************************************
+ * Reduced snprintf to be used for Trusted firmware.
+ * The following type specifiers are supported:
+ *
+ * %d or %i - signed decimal format
+ * %s - string format
+ * %u - unsigned decimal format
+ *
+ * The function panics on all other formats specifiers.
+ *
+ * It returns the number of characters that would be written if the
+ * buffer was big enough. If it returns a value lower than n, the
+ * whole string has been written.
+ *******************************************************************/
+int snprintf(char *s, size_t n, const char *fmt, ...)
+{
+ va_list args;
+ int num;
+ unsigned int unum;
+ char *str;
+ size_t chars_printed = 0U;
+
+ if (n == 0U) {
+ /* There isn't space for anything. */
+ } else if (n == 1U) {
+ /* Buffer is too small to actually write anything else. */
+ *s = '\0';
+ n = 0U;
+ } else {
+ /* Reserve space for the terminator character. */
+ n--;
+ }
+
+ va_start(args, fmt);
+ while (*fmt != '\0') {
+
+ if (*fmt == '%') {
+ fmt++;
+ /* Check the format specifier. */
+ switch (*fmt) {
+ case 'i':
+ case 'd':
+ num = va_arg(args, int);
+
+ if (num < 0) {
+ if (chars_printed < n) {
+ *s = '-';
+ s++;
+ }
+ chars_printed++;
+
+ unum = (unsigned int)-num;
+ } else {
+ unum = (unsigned int)num;
+ }
+
+ unsigned_dec_print(&s, n, &chars_printed, unum);
+ break;
+ case 's':
+ str = va_arg(args, char *);
+ string_print(&s, n, &chars_printed, str);
+ break;
+ case 'u':
+ unum = va_arg(args, unsigned int);
+ unsigned_dec_print(&s, n, &chars_printed, unum);
+ break;
+ default:
+ /* Panic on any other format specifier. */
+ ERROR("snprintf: specifier with ASCII code '%d' not supported.",
+ *fmt);
+ plat_panic_handler();
+ assert(0); /* Unreachable */
+ }
+ fmt++;
+ continue;
+ }
+
+ if (chars_printed < n) {
+ *s = *fmt;
+ s++;
+ }
+
+ fmt++;
+ chars_printed++;
+ }
+
+ va_end(args);
+
+ if (n > 0U)
+ *s = '\0';
+
+ return (int)chars_printed;
+}
diff --git a/lib/libc/strchr.c b/lib/libc/strchr.c
new file mode 100644
index 00000000..d94bb9e0
--- /dev/null
+++ b/lib/libc/strchr.c
@@ -0,0 +1,53 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#include <stddef.h>
+#include <string.h>
+
+char *
+strchr(const char *p, int ch)
+{
+ char c;
+
+ c = ch;
+ for (;; ++p) {
+ if (*p == c)
+ return ((char *)p);
+ if (*p == '\0')
+ return (NULL);
+ }
+ /* NOTREACHED */
+}
diff --git a/lib/libc/strcmp.c b/lib/libc/strcmp.c
new file mode 100644
index 00000000..b742f9b9
--- /dev/null
+++ b/lib/libc/strcmp.c
@@ -0,0 +1,52 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * 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. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#include <string.h>
+
+/*
+ * Compare strings.
+ */
+int
+strcmp(const char *s1, const char *s2)
+{
+ while (*s1 == *s2++)
+ if (*s1++ == '\0')
+ return (0);
+ return (*(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1));
+}
diff --git a/lib/libc/strlcpy.c b/lib/libc/strlcpy.c
new file mode 100644
index 00000000..c4f39bb9
--- /dev/null
+++ b/lib/libc/strlcpy.c
@@ -0,0 +1,52 @@
+/* $OpenBSD: strlcpy.c,v 1.12 2015/01/15 03:54:12 millert Exp $ */
+
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 1998, 2015 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <string.h>
+
+/*
+ * Copy string src to buffer dst of size dsize. At most dsize-1
+ * chars will be copied. Always NUL terminates (unless dsize == 0).
+ * Returns strlen(src); if retval >= dsize, truncation occurred.
+ */
+size_t
+strlcpy(char * dst, const char * src, size_t dsize)
+{
+ const char *osrc = src;
+ size_t nleft = dsize;
+
+ /* Copy as many bytes as will fit. */
+ if (nleft != 0) {
+ while (--nleft != 0) {
+ if ((*dst++ = *src++) == '\0')
+ break;
+ }
+ }
+
+ /* Not enough room in dst, add NUL and traverse rest of src. */
+ if (nleft == 0) {
+ if (dsize != 0)
+ *dst = '\0'; /* NUL-terminate dst */
+ while (*src++)
+ ;
+ }
+
+ return(src - osrc - 1); /* count does not include NUL */
+}
diff --git a/lib/libc/strlen.c b/lib/libc/strlen.c
new file mode 100644
index 00000000..3c276300
--- /dev/null
+++ b/lib/libc/strlen.c
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <string.h>
+
+size_t strlen(const char *s)
+{
+ const char *cursor = s;
+
+ while (*cursor)
+ cursor++;
+
+ return cursor - s;
+}
diff --git a/lib/libc/strncmp.c b/lib/libc/strncmp.c
new file mode 100644
index 00000000..ce9e5ed4
--- /dev/null
+++ b/lib/libc/strncmp.c
@@ -0,0 +1,53 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1989, 1993
+ * The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#include <string.h>
+
+int
+strncmp(const char *s1, const char *s2, size_t n)
+{
+
+ if (n == 0)
+ return (0);
+ do {
+ if (*s1 != *s2++)
+ return (*(const unsigned char *)s1 -
+ *(const unsigned char *)(s2 - 1));
+ if (*s1++ == '\0')
+ break;
+ } while (--n != 0);
+ return (0);
+}
diff --git a/lib/libc/strnlen.c b/lib/libc/strnlen.c
new file mode 100644
index 00000000..b944e95b
--- /dev/null
+++ b/lib/libc/strnlen.c
@@ -0,0 +1,46 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2009 David Schultz <das@FreeBSD.org>
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+/*
+ * Portions copyright (c) 2018, ARM Limited and Contributors.
+ * All rights reserved.
+ */
+
+#include <string.h>
+
+size_t
+strnlen(const char *s, size_t maxlen)
+{
+ size_t len;
+
+ for (len = 0; len < maxlen; len++, s++) {
+ if (!*s)
+ break;
+ }
+ return (len);
+}
diff --git a/lib/libc/strrchr.c b/lib/libc/strrchr.c
new file mode 100644
index 00000000..cd435ff3
--- /dev/null
+++ b/lib/libc/strrchr.c
@@ -0,0 +1,49 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. 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. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+#include <stddef.h>
+#include <string.h>
+
+char *
+strrchr(const char *p, int ch)
+{
+ char *save;
+ char c;
+
+ c = ch;
+ for (save = NULL;; ++p) {
+ if (*p == c)
+ save = (char *)p;
+ if (*p == '\0')
+ return (save);
+ }
+ /* NOTREACHED */
+}