runtime: rewrite panic/defer code from C to Go

    
    The actual stack unwind code is still in C, but the rest of the code,
    notably all the memory allocation, is now in Go.  The names are changed
    to the names used in the Go 1.7 runtime, but the code is necessarily
    somewhat different.
    
    The __go_makefunc_can_recover function is dropped, as the uses of it
    were removed in https://golang.org/cl/198770044.
    
    Reviewed-on: https://go-review.googlesource.com/33414


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242715 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 3 insertions, 40 deletions

diff --git a/libgo/Makefile.in b/libgo/Makefile.in
index cf5a0e2022df..9b87db009823 100644
--- a/libgo/Makefile.in
+++ b/libgo/Makefile.in
@@ -191,10 +191,9 @@ libgo_llgo_la_DEPENDENCIES = $(am__DEPENDENCIES_4)
 @LIBGO_IS_LINUX_TRUE@am__objects_4 = getncpu-linux.lo
 am__objects_5 = go-assert.lo go-breakpoint.lo go-caller.lo \
 	go-callers.lo go-cdiv.lo go-cgo.lo go-construct-map.lo \
-	go-defer.lo go-deferred-recover.lo go-ffi.lo go-fieldtrack.lo \
-	go-matherr.lo go-memclr.lo go-memcmp.lo go-memequal.lo \
-	go-memmove.lo go-nanotime.lo go-now.lo go-new.lo go-nosys.lo \
-	go-panic.lo go-recover.lo go-reflect-call.lo \
+	go-ffi.lo go-fieldtrack.lo go-matherr.lo go-memclr.lo \
+	go-memcmp.lo go-memequal.lo go-memmove.lo go-nanotime.lo \
+	go-now.lo go-new.lo go-nosys.lo go-reflect-call.lo \
 	go-runtime-error.lo go-setenv.lo go-signal.lo go-strslice.lo \
 	go-type-complex.lo go-type-float.lo go-type-identity.lo \
 	go-type-string.lo go-typedesc-equal.lo go-unsafe-new.lo \
@@ -775,8 +774,6 @@ runtime_files = \
 	runtime/go-cdiv.c \
 	runtime/go-cgo.c \
 	runtime/go-construct-map.c \
-	runtime/go-defer.c \
-	runtime/go-deferred-recover.c \
 	runtime/go-ffi.c \
 	runtime/go-fieldtrack.c \
 	runtime/go-matherr.c \
@@ -788,8 +785,6 @@ runtime_files = \
 	runtime/go-now.c \
 	runtime/go-new.c \
 	runtime/go-nosys.c \
-	runtime/go-panic.c \
-	runtime/go-recover.c \
 	runtime/go-reflect-call.c \
 	runtime/go-runtime-error.c \
 	runtime/go-setenv.c \
@@ -1464,8 +1459,6 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-cdiv.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-cgo.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-construct-map.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-defer.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-deferred-recover.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-ffi.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-fieldtrack.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-matherr.Plo@am__quote@
@@ -1477,8 +1470,6 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-new.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-nosys.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-now.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-panic.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-recover.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-reflect-call.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-runtime-error.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/go-setenv.Plo@am__quote@
@@ -1631,20 +1622,6 @@ go-construct-map.lo: runtime/go-construct-map.c
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(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) $(CFLAGS) -c -o go-construct-map.lo `test -f 'runtime/go-construct-map.c' || echo '$(srcdir)/'`runtime/go-construct-map.c
 
-go-defer.lo: runtime/go-defer.c
-@am__fastdepCC_TRUE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT go-defer.lo -MD -MP -MF $(DEPDIR)/go-defer.Tpo -c -o go-defer.lo `test -f 'runtime/go-defer.c' || echo '$(srcdir)/'`runtime/go-defer.c
-@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/go-defer.Tpo $(DEPDIR)/go-defer.Plo
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='runtime/go-defer.c' object='go-defer.lo' libtool=yes @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(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) $(CFLAGS) -c -o go-defer.lo `test -f 'runtime/go-defer.c' || echo '$(srcdir)/'`runtime/go-defer.c
-
-go-deferred-recover.lo: runtime/go-deferred-recover.c
-@am__fastdepCC_TRUE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT go-deferred-recover.lo -MD -MP -MF $(DEPDIR)/go-deferred-recover.Tpo -c -o go-deferred-recover.lo `test -f 'runtime/go-deferred-recover.c' || echo '$(srcdir)/'`runtime/go-deferred-recover.c
-@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/go-deferred-recover.Tpo $(DEPDIR)/go-deferred-recover.Plo
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='runtime/go-deferred-recover.c' object='go-deferred-recover.lo' libtool=yes @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(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) $(CFLAGS) -c -o go-deferred-recover.lo `test -f 'runtime/go-deferred-recover.c' || echo '$(srcdir)/'`runtime/go-deferred-recover.c
-
 go-ffi.lo: runtime/go-ffi.c
 @am__fastdepCC_TRUE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT go-ffi.lo -MD -MP -MF $(DEPDIR)/go-ffi.Tpo -c -o go-ffi.lo `test -f 'runtime/go-ffi.c' || echo '$(srcdir)/'`runtime/go-ffi.c
 @am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/go-ffi.Tpo $(DEPDIR)/go-ffi.Plo
@@ -1722,20 +1699,6 @@ go-nosys.lo: runtime/go-nosys.c
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(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) $(CFLAGS) -c -o go-nosys.lo `test -f 'runtime/go-nosys.c' || echo '$(srcdir)/'`runtime/go-nosys.c
 
-go-panic.lo: runtime/go-panic.c
-@am__fastdepCC_TRUE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT go-panic.lo -MD -MP -MF $(DEPDIR)/go-panic.Tpo -c -o go-panic.lo `test -f 'runtime/go-panic.c' || echo '$(srcdir)/'`runtime/go-panic.c
-@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/go-panic.Tpo $(DEPDIR)/go-panic.Plo
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='runtime/go-panic.c' object='go-panic.lo' libtool=yes @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(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) $(CFLAGS) -c -o go-panic.lo `test -f 'runtime/go-panic.c' || echo '$(srcdir)/'`runtime/go-panic.c
-
-go-recover.lo: runtime/go-recover.c
-@am__fastdepCC_TRUE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT go-recover.lo -MD -MP -MF $(DEPDIR)/go-recover.Tpo -c -o go-recover.lo `test -f 'runtime/go-recover.c' || echo '$(srcdir)/'`runtime/go-recover.c
-@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/go-recover.Tpo $(DEPDIR)/go-recover.Plo
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='runtime/go-recover.c' object='go-recover.lo' libtool=yes @AMDEPBACKSLASH@
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(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) $(CFLAGS) -c -o go-recover.lo `test -f 'runtime/go-recover.c' || echo '$(srcdir)/'`runtime/go-recover.c
-
 go-reflect-call.lo: runtime/go-reflect-call.c
 @am__fastdepCC_TRUE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT go-reflect-call.lo -MD -MP -MF $(DEPDIR)/go-reflect-call.Tpo -c -o go-reflect-call.lo `test -f 'runtime/go-reflect-call.c' || echo '$(srcdir)/'`runtime/go-reflect-call.c
 @am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/go-reflect-call.Tpo $(DEPDIR)/go-reflect-call.Plo