New platform lia6ll (linux, arm64, clang/llvm).

mps/code/.p4ignore

@@ -8,6 +8,7 @@ fri3gc
 fri3ll
 fri6gc
 fri6ll
+lia6ll
 lii3gc
 lii6gc
 lii6ll

mps/code/lia6ll.gmk

@@ -0,0 +1,55 @@
+# -*- makefile -*-
+#
+# lia6ll.gmk: BUILD FOR LINUX/ARM64/Clang PLATFORM
+#
+# $Id$
+# Copyright (c) 2001-2021 Ravenbrook Limited.  See end of file for license.
+
+PFM = lia6ll
+
+MPMPF = \
+    lockix.c \
+    prmcanan.c \
+    prmcix.c \
+    prmclia6.c \
+    protix.c \
+    protsgix.c \
+    pthrdext.c \
+    span.c \
+    thix.c \
+    vmix.c
+
+LIBS = -lm -lpthread
+
+include ll.gmk
+include comm.gmk
+
+
+# C. COPYRIGHT AND LICENSE
+#
+# Copyright (C) 2001-2021 Ravenbrook Limited <https://www.ravenbrook.com/>.
+#
+# 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 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
+# HOLDER 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.
+

mps/code/ll.gmk

@@ -14,11 +14,11 @@ CFLAGSDEBUG = -O0 -g3
 CFLAGSOPT = -O2 -g3
 
 # Warnings that might be enabled by clients <design/config/#.warning.impl>.
+# TODO: add -Wcomma when all our continuous integration platforms support it.
 CFLAGSCOMPILER := \
 	-Waggregate-return \
 	-Wall \
 	-Wcast-qual \
-	-Wcomma \
 	-Wconversion \
 	-Wduplicate-enum \
 	-Werror \

mps/code/mps.c

@@ -182,6 +182,21 @@
 #include "prmcfri6.c"   /* x86-64 for FreeBSD mutator context */
 #include "span.c"       /* generic stack probe */
 
+/* Linux on ARM64 with Clang */
+
+#elif defined(MPS_PF_LIA6LL)
+
+#include "lockix.c"     /* Posix locks */
+#include "thix.c"       /* Posix threading */
+#include "pthrdext.c"   /* Posix thread extensions */
+#include "vmix.c"       /* Posix virtual memory */
+#include "protix.c"     /* Posix protection */
+#include "protsgix.c"   /* Posix signal handling */
+#include "prmcanan.c"   /* generic architecture mutator context */
+#include "prmcix.c"     /* Posix mutator context */
+#include "prmclia6.c"   /* x86-64 for Linux mutator context */
+#include "span.c"       /* generic stack probe */
+
 /* Linux on IA-32 with GCC */
 
 #elif defined(MPS_PF_LII3GC)

mps/code/mpstd.h

@@ -222,6 +222,25 @@
 #define MPS_PF_ALIGN    8
 
 
+/* Clang/LLVM 10.0, clang -E -dM */
+
+#elif defined(__linux__) && defined(__aarch64__) && defined(__GNUC__) \
+      && defined(__clang__)
+#if defined(CONFIG_PF_STRING) && ! defined(CONFIG_PF_LIA6LL)
+#error "specified CONFIG_PF_... inconsistent with detected lia6ll"
+#endif
+#define MPS_PF_LIA6LL
+#define MPS_PF_STRING   "lia6ll"
+#define MPS_OS_LI
+#define MPS_ARCH_A6
+#define MPS_BUILD_LL
+#define MPS_T_WORD      unsigned long
+#define MPS_T_ULONGEST  unsigned long
+#define MPS_WORD_WIDTH  64
+#define MPS_WORD_SHIFT  6
+#define MPS_PF_ALIGN    8
+
+
 /* GCC 2.6.3, gcc -E -dM
  * The actual granularity of GNU malloc is 8, but field alignments are
  * all 4.

mps/code/prmclia6.c

@@ -0,0 +1,53 @@
+/* prmclia6.c: MUTATOR CONTEXT ARM64 (LINUX)
+ *
+ * $Id$
+ * Copyright (c) 2001-2021 Ravenbrook Limited.  See end of file for license.
+ *
+ * .purpose: Implement the mutator context module. <design/prmc>.
+ */
+
+#include "prmcix.h"
+
+SRCID(prmclia6, "$Id$");
+
+#if !defined(MPS_OS_LI) || !defined(MPS_ARCH_A6)
+#error "prmclia6.c is specific to MPS_OS_LI and MPS_ARCH_A6"
+#endif
+
+
+Addr MutatorContextSP(MutatorContext context)
+{
+  AVERT(MutatorContext, context);
+
+  return (Addr)context->ucontext->uc_mcontext.sp;
+}
+
+
+/* C. COPYRIGHT AND LICENSE
+ *
+ * Copyright (C) 2001-2021 Ravenbrook Limited <https://www.ravenbrook.com/>.
+ *
+ * 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 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
+ * HOLDER 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.
+ */