runtime: copy signal code from Go 1.7 runtime

    
    Add a little shell script to auto-generate runtime.sigtable from the
    known signal names.
    
    Force the main package to always import the runtime package.  Otherwise
    some runtime package global variables may never be initialized.
    
    Set the syscallsp and syscallpc fields of g when entering a syscall, so
    that the runtime package knows when a g is executing a syscall.
    
    Fix runtime.funcPC to avoid dead store elimination of the interface
    value when the function is inlined.
    
    Reviewed-on: https://go-review.googlesource.com/33025

From-SVN: r242060

1 files changed, 9 insertions, 19 deletions

diff --git a/libgo/Makefile.in b/libgo/Makefile.in
index 908e660..44a6999c 100644
--- a/libgo/Makefile.in
+++ b/libgo/Makefile.in
@@ -203,9 +203,8 @@ am__objects_5 = go-assert.lo go-breakpoint.lo go-caller.lo \
 	go-unwind.lo go-varargs.lo env_posix.lo heapdump.lo mcache.lo \
 	mcentral.lo $(am__objects_1) mfixalloc.lo mgc0.lo mheap.lo \
 	msize.lo panic.lo parfor.lo print.lo proc.lo runtime_c.lo \
-	signal_unix.lo thread.lo $(am__objects_2) yield.lo \
-	$(am__objects_3) malloc.lo runtime1.lo sigqueue.lo \
-	$(am__objects_4)
+	thread.lo $(am__objects_2) yield.lo $(am__objects_3) malloc.lo \
+	runtime1.lo $(am__objects_4)
 am_libgo_llgo_la_OBJECTS = $(am__objects_5)
 libgo_llgo_la_OBJECTS = $(am_libgo_llgo_la_OBJECTS)
 libgo_llgo_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
@@ -828,14 +827,12 @@ runtime_files = \
 	runtime/print.c \
 	runtime/proc.c \
 	runtime/runtime_c.c \
-	runtime/signal_unix.c \
 	runtime/thread.c \
 	$(runtime_thread_files) \
 	runtime/yield.c \
 	$(rtems_task_variable_add_file) \
 	malloc.c \
 	runtime1.c \
-	sigqueue.c \
 	$(runtime_getncpu_file)
 
 noinst_DATA = zstdpkglist.go
@@ -1141,7 +1138,7 @@ CHECK_DEPS = $(toolexeclibgo_DATA) $(toolexeclibgoarchive_DATA) \
 math_lo_GOCFLAGS = $(MATH_FLAG)
 
 # Add the generated file runtime_sysinfo.go to the runtime package.
-extra_go_files_runtime = runtime_sysinfo.go
+extra_go_files_runtime = runtime_sysinfo.go sigtab.go
 
 # Add generated files to the syscall package.
 extra_go_files_syscall = \
@@ -1525,8 +1522,6 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/rtems-task-variable-add.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/runtime1.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/runtime_c.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/signal_unix.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/sigqueue.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/thread-linux.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/thread-sema.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/thread.Plo@am__quote@
@@ -1966,13 +1961,6 @@ runtime_c.lo: runtime/runtime_c.c
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o runtime_c.lo `test -f 'runtime/runtime_c.c' || echo '$(srcdir)/'`runtime/runtime_c.c
 
-signal_unix.lo: runtime/signal_unix.c
-@am__fastdepCC_TRUE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT signal_unix.lo -MD -MP -MF $(DEPDIR)/signal_unix.Tpo -c -o signal_unix.lo `test -f 'runtime/signal_unix.c' || echo '$(srcdir)/'`runtime/signal_unix.c
-@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/signal_unix.Tpo $(DEPDIR)/signal_unix.Plo
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='runtime/signal_unix.c' object='signal_unix.lo' libtool=yes @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o signal_unix.lo `test -f 'runtime/signal_unix.c' || echo '$(srcdir)/'`runtime/signal_unix.c
-
 thread.lo: runtime/thread.c
 @am__fastdepCC_TRUE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT thread.lo -MD -MP -MF $(DEPDIR)/thread.Tpo -c -o thread.lo `test -f 'runtime/thread.c' || echo '$(srcdir)/'`runtime/thread.c
 @am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/thread.Tpo $(DEPDIR)/thread.Plo
@@ -3177,10 +3165,6 @@ runtime1.c: $(srcdir)/runtime/runtime1.goc goc2c
 	./goc2c $< > $@.tmp
 	mv -f $@.tmp $@
 
-sigqueue.c: $(srcdir)/runtime/sigqueue.goc goc2c
-	./goc2c --go-pkgpath os_signal $< > $@.tmp
-	mv -f $@.tmp $@
-
 %.c: $(srcdir)/runtime/%.goc goc2c
 	./goc2c $< > $@.tmp
 	mv -f $@.tmp $@
@@ -3245,6 +3229,12 @@ s-runtime_sysinfo: $(srcdir)/mkrsysinfo.sh gen-sysinfo.go
 	$(SHELL) $(srcdir)/mvifdiff.sh tmp-runtime_sysinfo.go runtime_sysinfo.go
 	$(STAMP) $@
 
+sigtab.go: s-sigtab; @true
+s-sigtab: $(srcdir)/mksigtab.sh gen-sysinfo.go
+	GOOS=$(GOOS) $(SHELL) $(srcdir)/mksigtab.sh > tmp-sigtab.go
+	$(SHELL) $(srcdir)/mvifdiff.sh tmp-sigtab.go sigtab.go
+	$(STAMP) $@
+
 runtime.inc: s-runtime-inc; @true
 s-runtime-inc: runtime.lo Makefile
 	rm -f runtime.inc.tmp2