Basic loongarch64 support

Just wire things up to make the project buildable
on LoongArch64.

opensslconf.h is taken form riscv64 folder as is,
and is the same as on some other 64 bit architectures.

Refs: https://github.com/libressl/portable/issues/1123
Signed-off-by: Ivan A. Melnikov <iv@altlinux.org>

13 files changed, 239 insertions, 10 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 437570b..3673922 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -389,6 +389,8 @@ elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "(x86_64|amd64|AMD64)")
 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "(i[3-6]86|[xX]86)")
         set(ENABLE_ASM false)
         set(HOST_I386 true)
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "loongarch64")
+        set(HOST_LOONGARCH64 true)
 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "mips64")
         set(HOST_MIPS64 true)
 elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "mips")
diff --git a/configure.ac b/configure.ac
index 864a4ad..7a88f27 100644
--- a/configure.ac
+++ b/configure.ac
@@ -86,16 +86,17 @@ AS_CASE([$host_cpu],
 )
 AM_CONDITIONAL([HOST_CPU_IS_INTEL], [test "x$HOSTARCH" = "xintel"])
 
-AM_CONDITIONAL([HOST_AARCH64],   [test "$host_cpu" = "aarch64"])
-AM_CONDITIONAL([HOST_ARM],       [test "$host_cpu" = "arm"])
-AM_CONDITIONAL([HOST_I386],      [test "$host_cpu" = "i386"])
-AM_CONDITIONAL([HOST_MIPS],      [test "$host_cpu" = "mips"])
-AM_CONDITIONAL([HOST_MIPS64],    [test "$host_cpu" = "mips64"])
-AM_CONDITIONAL([HOST_POWERPC],   [test "$host_cpu" = "powerpc"])
-AM_CONDITIONAL([HOST_POWERPC64], [test "$host_cpu" = "ppc64"])
-AM_CONDITIONAL([HOST_RISCV64],   [test "$host_cpu" = "riscv64"])
-AM_CONDITIONAL([HOST_SPARC64],   [test "$host_cpu" = "sparc64"])
-AM_CONDITIONAL([HOST_X86_64],    [test "$host_cpu" = "x86_64"])
+AM_CONDITIONAL([HOST_AARCH64],      [test "$host_cpu" = "aarch64"])
+AM_CONDITIONAL([HOST_ARM],          [test "$host_cpu" = "arm"])
+AM_CONDITIONAL([HOST_I386],         [test "$host_cpu" = "i386"])
+AM_CONDITIONAL([HOST_LOONGARCH64],  [test "$host_cpu" = "loongarch64"])
+AM_CONDITIONAL([HOST_MIPS],         [test "$host_cpu" = "mips"])
+AM_CONDITIONAL([HOST_MIPS64],       [test "$host_cpu" = "mips64"])
+AM_CONDITIONAL([HOST_POWERPC],      [test "$host_cpu" = "powerpc"])
+AM_CONDITIONAL([HOST_POWERPC64],    [test "$host_cpu" = "ppc64"])
+AM_CONDITIONAL([HOST_RISCV64],      [test "$host_cpu" = "riscv64"])
+AM_CONDITIONAL([HOST_SPARC64],      [test "$host_cpu" = "sparc64"])
+AM_CONDITIONAL([HOST_X86_64],       [test "$host_cpu" = "x86_64"])
 
 AC_MSG_CHECKING([if .gnu.warning accepts long strings])
 AC_LINK_IFELSE([AC_LANG_SOURCE([[
diff --git a/crypto/CMakeLists.txt b/crypto/CMakeLists.txt
index e642b01..a714059 100644
--- a/crypto/CMakeLists.txt
+++ b/crypto/CMakeLists.txt
@@ -774,6 +774,9 @@ elseif(HOST_ARM)
 elseif(HOST_I386)
         target_include_directories(crypto_obj PRIVATE arch/i386/)
         target_include_directories(crypto_obj PRIVATE bn/arch/i386/)
+elseif(HOST_LOONGARCH64)
+        target_include_directories(crypto_obj PRIVATE arch/loongarch64)
+        target_include_directories(crypto_obj PRIVATE bn/arch/loongarch64)
 elseif(HOST_MIPS64)
         target_include_directories(crypto_obj PRIVATE arch/mips64)
         target_include_directories(crypto_obj PRIVATE bn/arch/mips64)
diff --git a/crypto/Makefile.am b/crypto/Makefile.am
index 438da8b..0952494 100644
--- a/crypto/Makefile.am
+++ b/crypto/Makefile.am
@@ -396,6 +396,13 @@ endif
 noinst_HEADERS += arch/i386/crypto_arch.h
 noinst_HEADERS += bn/arch/i386/bn_arch.h
 
+if HOST_LOONGARCH64
+libcrypto_la_CPPFLAGS += -I$(top_srcdir)/crypto/arch/loongarch64/
+libcrypto_la_CPPFLAGS += -I$(top_srcdir)/crypto/bn/arch/loongarch64/
+endif
+noinst_HEADERS += arch/loongarch64/crypto_arch.h
+noinst_HEADERS += bn/arch/loongarch64/bn_arch.h
+
 # XXX - do we still need this?
 if HOST_MIPS
 libcrypto_la_CPPFLAGS += -I$(top_srcdir)/crypto/bn/arch/mips/
diff --git a/crypto/arch/loongarch64/crypto_arch.h b/crypto/arch/loongarch64/crypto_arch.h
new file mode 100644
index 0000000..a3dd98d
--- /dev/null
+++ b/crypto/arch/loongarch64/crypto_arch.h
@@ -0,0 +1,21 @@
+/*      $OpenBSD: crypto_arch.h,v 1.1 2024/08/11 13:02:39 jsing Exp $ */
+/*
+ * Copyright (c) 2024 Joel Sing <jsing@openbsd.org>
+ *
+ * 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.
+ */
+
+#ifndef HEADER_CRYPTO_ARCH_H
+#define HEADER_CRYPTO_ARCH_H
+
+#endif
diff --git a/crypto/bn/arch/loongarch64/bn_arch.h b/crypto/bn/arch/loongarch64/bn_arch.h
new file mode 100644
index 0000000..672ac12
--- /dev/null
+++ b/crypto/bn/arch/loongarch64/bn_arch.h
@@ -0,0 +1,23 @@
+/*      $OpenBSD: bn_arch.h,v 1.7 2023/07/09 10:37:32 jsing Exp $ */
+/*
+ * Copyright (c) 2023 Joel Sing <jsing@openbsd.org>
+ *
+ * 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 <openssl/bn.h>
+
+#ifndef HEADER_BN_ARCH_H
+#define HEADER_BN_ARCH_H
+
+#endif
diff --git a/include/CMakeLists.txt b/include/CMakeLists.txt
index 59f5b62..11ab7c2 100644
--- a/include/CMakeLists.txt
+++ b/include/CMakeLists.txt
@@ -24,6 +24,8 @@ elseif(HOST_ARM)
         file(READ arch/arm/opensslconf.h OPENSSLCONF)
 elseif(HOST_I386)
         file(READ arch/i386/opensslconf.h OPENSSLCONF)
+elseif(HOST_LOONGARCH64)
+        file(READ arch/loongarch64/opensslconf.h OPENSSLCONF)
 elseif(HOST_MIPS)
         file(READ arch/mips/opensslconf.h OPENSSLCONF)
 elseif(HOST_MIPS64)
diff --git a/include/arch/loongarch64/opensslconf.h b/include/arch/loongarch64/opensslconf.h
new file mode 100644
index 0000000..731b06a
--- /dev/null
+++ b/include/arch/loongarch64/opensslconf.h
@@ -0,0 +1,154 @@
+#include <openssl/opensslfeatures.h>
+/* crypto/opensslconf.h.in */
+
+#if defined(HEADER_CRYPTO_LOCAL_H) && !defined(OPENSSLDIR)
+#define OPENSSLDIR "/etc/ssl"
+#endif
+
+#undef OPENSSL_EXPORT_VAR_AS_FUNCTION
+
+#ifndef OPENSSL_FILE
+#ifdef OPENSSL_NO_FILENAMES
+#define OPENSSL_FILE ""
+#define OPENSSL_LINE 0
+#else
+#define OPENSSL_FILE __FILE__
+#define OPENSSL_LINE __LINE__
+#endif
+#endif
+
+#if defined(HEADER_IDEA_H) && !defined(IDEA_INT)
+#define IDEA_INT unsigned int
+#endif
+
+#if defined(HEADER_MD2_H) && !defined(MD2_INT)
+#define MD2_INT unsigned int
+#endif
+
+#if defined(HEADER_RC2_H) && !defined(RC2_INT)
+/* I need to put in a mod for the alpha - eay */
+#define RC2_INT unsigned int
+#endif
+
+#if defined(HEADER_RC4_H)
+#if !defined(RC4_INT)
+/* using int types make the structure larger but make the code faster
+ * on most boxes I have tested - up to %20 faster. */
+/*
+ * I don't know what does "most" mean, but declaring "int" is a must on:
+ * - Intel P6 because partial register stalls are very expensive;
+ * - elder Alpha because it lacks byte load/store instructions;
+ */
+#define RC4_INT unsigned int
+#endif
+#if !defined(RC4_CHUNK)
+/*
+ * This enables code handling data aligned at natural CPU word
+ * boundary. See crypto/rc4/rc4_enc.c for further details.
+ */
+#define RC4_CHUNK unsigned long
+#endif
+#endif
+
+#if (defined(HEADER_NEW_DES_H) || defined(HEADER_DES_H)) && !defined(DES_LONG)
+/* If this is set to 'unsigned int' on a DEC Alpha, this gives about a
+ * %20 speed up (longs are 8 bytes, int's are 4). */
+#ifndef DES_LONG
+#define DES_LONG unsigned int
+#endif
+#endif
+
+#if defined(HEADER_BN_H) && !defined(CONFIG_HEADER_BN_H)
+#define CONFIG_HEADER_BN_H
+#undef BN_LLONG
+
+/* Should we define BN_DIV2W here? */
+
+/* Only one for the following should be defined */
+/* The prime number generation stuff may not work when
+ * EIGHT_BIT but I don't care since I've only used this mode
+ * for debugging the bignum libraries */
+#define SIXTY_FOUR_BIT_LONG
+#undef SIXTY_FOUR_BIT
+#undef THIRTY_TWO_BIT
+#undef SIXTEEN_BIT
+#undef EIGHT_BIT
+#endif
+
+#if defined(HEADER_BF_LOCL_H) && !defined(CONFIG_HEADER_BF_LOCL_H)
+#define CONFIG_HEADER_BF_LOCL_H
+#undef BF_PTR
+#endif /* HEADER_BF_LOCL_H */
+
+#if defined(HEADER_DES_LOCL_H) && !defined(CONFIG_HEADER_DES_LOCL_H)
+#define CONFIG_HEADER_DES_LOCL_H
+#ifndef DES_DEFAULT_OPTIONS
+/* the following is tweaked from a config script, that is why it is a
+ * protected undef/define */
+#ifndef DES_PTR
+#undef DES_PTR
+#endif
+
+/* This helps C compiler generate the correct code for multiple functional
+ * units.  It reduces register dependencies at the expense of 2 more
+ * registers */
+#ifndef DES_RISC1
+#undef DES_RISC1
+#endif
+
+#ifndef DES_RISC2
+#undef DES_RISC2
+#endif
+
+#if defined(DES_RISC1) && defined(DES_RISC2)
+YOU SHOULD NOT HAVE BOTH DES_RISC1 AND DES_RISC2 DEFINED!!!!!
+#endif
+
+/* Unroll the inner loop, this sometimes helps, sometimes hinders.
+ * Very much CPU dependent */
+#ifndef DES_UNROLL
+#define DES_UNROLL
+#endif
+
+/* These default values were supplied by
+ * Peter Gutman <pgut001@cs.auckland.ac.nz>
+ * They are only used if nothing else has been defined */
+#if !defined(DES_PTR) && !defined(DES_RISC1) && !defined(DES_RISC2) && !defined(DES_UNROLL)
+/* Special defines which change the way the code is built depending on the
+   CPU and OS.  For SGI machines you can use _MIPS_SZLONG (32 or 64) to find
+   even newer MIPS CPU's, but at the moment one size fits all for
+   optimization options.  Older Sparc's work better with only UNROLL, but
+   there's no way to tell at compile time what it is you're running on */
+ 
+#if defined( sun )              /* Newer Sparc's */
+#  define DES_PTR
+#  define DES_RISC1
+#  define DES_UNROLL
+#elif defined( __ultrix )       /* Older MIPS */
+#  define DES_PTR
+#  define DES_RISC2
+#  define DES_UNROLL
+#elif defined( __osf1__ )       /* Alpha */
+#  define DES_PTR
+#  define DES_RISC2
+#elif defined ( _AIX )          /* RS6000 */
+  /* Unknown */
+#elif defined( __hpux )         /* HP-PA */
+  /* Unknown */
+#elif defined( __aux )          /* 68K */
+  /* Unknown */
+#elif defined( __dgux )         /* 88K (but P6 in latest boxes) */
+#  define DES_UNROLL
+#elif defined( __sgi )          /* Newer MIPS */
+#  define DES_PTR
+#  define DES_RISC2
+#  define DES_UNROLL
+#elif defined(i386) || defined(__i386__)        /* x86 boxes, should be gcc */
+#  define DES_PTR
+#  define DES_RISC1
+#  define DES_UNROLL
+#endif /* Systems-specific speed defines */
+#endif
+
+#endif /* DES_DEFAULT_OPTIONS */
+#endif /* HEADER_DES_LOCL_H */
diff --git a/include/openssl/Makefile.am.tpl b/include/openssl/Makefile.am.tpl
index 303d0b9..4bbbd60 100644
--- a/include/openssl/Makefile.am.tpl
+++ b/include/openssl/Makefile.am.tpl
@@ -17,6 +17,9 @@ endif
 if HOST_I386
         -cp $(top_srcdir)/include/arch/i386/opensslconf.h opensslconf.h
 endif
+if HOST_LOONGARCH64
+        -cp $(top_srcdir)/include/arch/loongarch64/opensslconf.h opensslconf.h
+endif
 if HOST_MIPS
         -cp $(top_srcdir)/include/arch/mips/opensslconf.h opensslconf.h
 endif
diff --git a/ssl/CMakeLists.txt b/ssl/CMakeLists.txt
index bdcfbb2..5baa5bc 100644
--- a/ssl/CMakeLists.txt
+++ b/ssl/CMakeLists.txt
@@ -117,6 +117,8 @@ elseif(HOST_ARM)
         target_include_directories(ssl_obj PRIVATE ../crypto/arch/arm/)
 elseif(HOST_I386)
         target_include_directories(ssl_obj PRIVATE ../crypto/arch/i386/)
+elseif(HOST_LOONGARCH64)
+        target_include_directories(ssl_obj PRIVATE ../crypto/arch/loongarch64)
 elseif(HOST_MIPS64)
         target_include_directories(ssl_obj PRIVATE ../crypto/arch/mips64)
 elseif(HOST_MIPS)
diff --git a/ssl/Makefile.am b/ssl/Makefile.am
index f9a66a3..8beb65a 100644
--- a/ssl/Makefile.am
+++ b/ssl/Makefile.am
@@ -131,6 +131,11 @@ libssl_la_CPPFLAGS += -I$(top_srcdir)/crypto/arch/i386/
 endif
 noinst_HEADERS += $(top_srcdir)/crypto/arch/i386/crypto_arch.h
 
+if HOST_LOONGARCH64
+libssl_la_CPPFLAGS += -I$(top_srcdir)/crypto/arch/loongarch64/
+endif
+noinst_HEADERS += $(top_srcdir)/crypto/arch/loongarch64/crypto_arch.h
+
 # XXX - do we still need this?
 if HOST_MIPS
 endif
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 8d6fa9d..f38486c 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -30,6 +30,8 @@ elseif(HOST_I386)
         include_directories(../crypto/arch/i386/)
 elseif(HOST_MIPS64)
         include_directories(../crypto/arch/mips64)
+elseif(HOST_LOONGARCH64)
+        include_directories(../crypto/arch/loongarch64)
 elseif(HOST_MIPS)
         # XXX - can this go away? the directory doesn't exist...
 elseif(HOST_POWERPC)
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 8153fc9..217f445 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -36,6 +36,10 @@ if HOST_I386
 AM_CPPFLAGS += -I$(top_srcdir)/crypto/arch/i386/
 endif
 
+if HOST_LOONGARCH64
+AM_CPPFLAGS += -I$(top_srcdir)/crypto/arch/loongarch64/
+endif
+
 # XXX - do we still need this?
 if HOST_MIPS
 endif