libgo, compiler: Upgrade libgo to Go 1.4, except for runtime.

This upgrades all of libgo other than the runtime package to
the Go 1.4 release.  In Go 1.4 much of the runtime was
rewritten into Go.  Merging that code will take more time and
will not change the API, so I'm putting it off for now.

There are a few runtime changes anyhow, to accomodate other
packages that rely on minor modifications to the runtime
support.

The compiler changes slightly to add a one-bit flag to each
type descriptor kind that is stored directly in an interface,
which for gccgo is currently only pointer types.  Another
one-bit flag (gcprog) is reserved because it is used by the gc
compiler, but gccgo does not currently use it.

There is another error check in the compiler since I ran
across it during testing.

gotools/:
	* Makefile.am (go_cmd_go_files): Sort entries.  Add generate.go.
	* Makefile.in: Rebuild.

From-SVN: r219627

1 files changed, 27 insertions, 10 deletions

diff --git a/libgo/runtime/runtime.c b/libgo/runtime/runtime.c
index 496e77b..6e0d164 100644
--- a/libgo/runtime/runtime.c
+++ b/libgo/runtime/runtime.c
@@ -59,8 +59,8 @@ runtime_gotraceback(bool *crash)
 static int32	argc;
 static byte**	argv;
 
-extern Slice os_Args __asm__ (GOSYM_PREFIX "os.Args");
-extern Slice syscall_Envs __asm__ (GOSYM_PREFIX "syscall.Envs");
+static Slice args;
+Slice envs;
 
 void (*runtime_sysargs)(int32, uint8**);
 
@@ -92,9 +92,9 @@ runtime_goargs(void)
 	s = runtime_malloc(argc*sizeof s[0]);
 	for(i=0; i<argc; i++)
 		s[i] = runtime_gostringnocopy((const byte*)argv[i]);
-	os_Args.__values = (void*)s;
-	os_Args.__count = argc;
-	os_Args.__capacity = argc;
+	args.__values = (void*)s;
+	args.__count = argc;
+	args.__capacity = argc;
 }
 
 void
@@ -109,9 +109,26 @@ runtime_goenvs_unix(void)
 	s = runtime_malloc(n*sizeof s[0]);
 	for(i=0; i<n; i++)
 		s[i] = runtime_gostringnocopy(argv[argc+1+i]);
-	syscall_Envs.__values = (void*)s;
-	syscall_Envs.__count = n;
-	syscall_Envs.__capacity = n;
+	envs.__values = (void*)s;
+	envs.__count = n;
+	envs.__capacity = n;
+}
+
+// Called from the syscall package.
+Slice runtime_envs(void) __asm__ (GOSYM_PREFIX "syscall.runtime_envs");
+
+Slice
+runtime_envs()
+{
+	return envs;
+}
+
+Slice os_runtime_args(void) __asm__ (GOSYM_PREFIX "os.runtime_args");
+
+Slice
+os_runtime_args()
+{
+	return args;
 }
 
 int32
@@ -127,8 +144,8 @@ runtime_atoi(const byte *p)
 
 static struct root_list runtime_roots =
 { nil,
-  { { &syscall_Envs, sizeof syscall_Envs },
-    { &os_Args, sizeof os_Args },
+  { { &envs, sizeof envs },
+    { &args, sizeof args },
     { nil, 0 } },
 };