Create wrapper library for system call instrumentation

syscall/.gitignore

@@ -1 +1,2 @@
 /.context
+/*.ldcmd

syscall/Makefile

@@ -37,18 +37,27 @@ include $(TOPDIR)/Make.defs
 
 include proxies/Make.defs
 include stubs/Make.defs
+include wraps/Make.defs
 
 MKSYSCALL = "$(TOPDIR)$(DELIM)tools$(DELIM)mksyscall$(HOSTEXEEXT)"
 CSVFILE = "$(TOPDIR)$(DELIM)syscall$(DELIM)syscall.csv"
 
+ifeq ($(CONFIG_SCHED_INSTRUMENTATION_SYSCALL),y)
+ifeq ($(CONFIG_LIB_SYSCALL),y)
+PROXY_SRCS += syscall_names.c
+else
+WRAP_SRCS += syscall_names.c
+endif
+endif
 STUB_SRCS += syscall_stublookup.c
 
 AOBJS = $(ASRCS:.S=$(OBJEXT))
 
 PROXY_OBJS = $(PROXY_SRCS:.c=$(OBJEXT))
 STUB_OBJS = $(STUB_SRCS:.c=$(OBJEXT))
+WRAP_OBJS = $(WRAP_SRCS:.c=$(OBJEXT))
 
-CSRCS = $(PROXY_SRCS) $(STUB_SRCS)
+CSRCS = $(PROXY_SRCS) $(STUB_SRCS) $(WRAP_SRCS)
 COBJS = $(CSRCS:.c=$(OBJEXT))
 
 SRCS = $(ASRCS) $(CSRCS)
@@ -56,12 +65,15 @@ OBJS = $(AOBJS) $(COBJS)
 
 PROXYDEPPATH = --dep-path proxies
 STUBDEPPATH = --dep-path stubs
-VPATH = proxies:stubs
+WRAPDEPPATH = --dep-path wraps
+VPATH = proxies:stubs:wraps
 
 BIN1 = libproxies$(LIBEXT)
 BIN2 = libstubs$(LIBEXT)
+BIN3 = libwraps$(LIBEXT)
+SYSCALLWRAPS = syscall_wraps.ldcmd
 
-all: $(BIN1) $(BIN2)
+all: $(BIN1) $(BIN2) $(BIN3) $(SYSCALLWRAPS)
 .PHONY: context depend clean distclean
 
 $(AOBJS): %$(OBJEXT): %.S
@@ -76,8 +88,13 @@ $(BIN1): $(PROXY_OBJS)
 $(BIN2): $(STUB_OBJS)
 	$(call ARCHIVE, $@, $(STUB_OBJS))
 
+$(BIN3): $(WRAP_OBJS)
+	$(call ARCHIVE, $@, $(WRAP_OBJS))
+
+$(SYSCALLWRAPS): .context
+
 .depend: Makefile $(SRCS)
-	$(Q) $(MKDEP) $(PROXYDEPPATH) $(STUBDEPPATH) \
+	$(Q) $(MKDEP) $(PROXYDEPPATH) $(STUBDEPPATH) $(WRAPDEPPATH) \
 	  "$(CC)" -- $(CFLAGS) -- $(SRCS) >Make.dep
 	$(Q) touch $@
 
@@ -85,8 +102,15 @@ depend: .depend
 
 .context: syscall.csv
 	$(Q) $(MAKE) -C $(TOPDIR)$(DELIM)tools -f Makefile.host mksyscall
+ifeq ($(CONFIG_LIB_SYSCALL),y)
 	$(Q) (cd proxies; $(MKSYSCALL) -p $(CSVFILE);)
 	$(Q) (cd stubs; $(MKSYSCALL) -s $(CSVFILE);)
+endif
+ifeq ($(CONFIG_SCHED_INSTRUMENTATION_SYSCALL),y)
+	$(Q) (cd wraps; $(MKSYSCALL) -w $(CSVFILE);)
+	$(Q) $(CPP) $(CPPFLAGS) $(SYSCALLWRAPS:.ldcmd=.h) | \
+	  sed -e '1,/WRAPOPTSTARTS/d' -e '/^#/d' > $(SYSCALLWRAPS)
+endif
 	$(Q) touch $@
 
 context: .context
@@ -94,9 +118,11 @@ context: .context
 clean:
 	$(call DELFILE, $(BIN1))
 	$(call DELFILE, $(BIN2))
+	$(call DELFILE, $(BIN3))
 ifneq ($(OBJEXT),)
 	$(call DELFILE, proxies$(DELIM)*$(OBJEXT))
 	$(call DELFILE, stubs$(DELIM)*$(OBJEXT))
+	$(call DELFILE, wraps$(DELIM)*$(OBJEXT))
 endif
 	$(call CLEAN)
 
@@ -106,5 +132,7 @@ distclean: clean
 	$(call DELFILE, .depend)
 	$(call DELFILE, proxies$(DELIM)*.c)
 	$(call DELFILE, stubs$(DELIM)*.c)
+	$(call DELFILE, wraps$(DELIM)*.c)
+	$(call DELFILE, $(SYSCALLWRAPS))
 
 -include Make.dep

syscall/syscall_names.c

@@ -0,0 +1,48 @@
+/****************************************************************************
+ * syscall/syscall_names.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#ifndef CONFIG_LIB_SYSCALL
+#define CONFIG_LIB_SYSCALL
+#endif
+#include <syscall.h>
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/* System call name tables.  This table is indexed by the system call numbers
+ * defined above.  Given the system call number, this table provides the
+ * name of the corresponding system function.
+ */
+
+const char *g_funcnames[SYS_nsyscalls] =
+{
+#  define SYSCALL_LOOKUP1(f,n) #f
+#  define SYSCALL_LOOKUP(f,n)  , #f
+#  include <sys/syscall_lookup.h>
+#  undef SYSCALL_LOOKUP1
+#  undef SYSCALL_LOOKUP
+};

syscall/syscall_wraps.h

@@ -0,0 +1,37 @@
+/****************************************************************************
+ * syscall/syscall_wraps.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/arch.h>
+
+#ifndef UP_WRAPOPT
+#define UP_WRAPOPT(f) --wrap f
+#endif
+
+#define SYSCALL_LOOKUP1(f,n) UP_WRAPOPT(f)
+#define SYSCALL_LOOKUP(f,n)  UP_WRAPOPT(f)
+
+WRAPOPTSTARTS
+
+#include <sys/syscall_lookup.h>

syscall/wraps/.gitignore

@@ -0,0 +1 @@
+/*.c

syscall/wraps/Make.defs

@@ -0,0 +1,21 @@
+############################################################################
+# syscall/wraps/Make.defs
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.  The
+# ASF licenses this file to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance with the
+# License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+############################################################################
+
+WRAP_SRCS := ${shell cd wraps; ls *.c 2>/dev/null }