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, 30 insertions, 5 deletions

diff --git a/libgo/go/os/file_unix.go b/libgo/go/os/file_unix.go
index 7959091..b25e62f 100644
--- a/libgo/go/os/file_unix.go
+++ b/libgo/go/os/file_unix.go
@@ -29,6 +29,7 @@ type file struct {
 }
 
 // Fd returns the integer Unix file descriptor referencing the open file.
+// The file descriptor is valid only until f.Close is called or f is garbage collected.
 func (f *File) Fd() uintptr {
 	if f == nil {
 		return ^(uintptr(0))
@@ -198,7 +199,7 @@ func (f *File) read(b []byte) (n int, err error) {
 	if needsMaxRW && len(b) > maxRW {
 		b = b[:maxRW]
 	}
-	return syscall.Read(f.fd, b)
+	return fixCount(syscall.Read(f.fd, b))
 }
 
 // pread reads len(b) bytes from the File starting at byte offset off.
@@ -208,7 +209,7 @@ func (f *File) pread(b []byte, off int64) (n int, err error) {
 	if needsMaxRW && len(b) > maxRW {
 		b = b[:maxRW]
 	}
-	return syscall.Pread(f.fd, b, off)
+	return fixCount(syscall.Pread(f.fd, b, off))
 }
 
 // write writes len(b) bytes to the File.
@@ -219,7 +220,7 @@ func (f *File) write(b []byte) (n int, err error) {
 		if needsMaxRW && len(bcap) > maxRW {
 			bcap = bcap[:maxRW]
 		}
-		m, err := syscall.Write(f.fd, bcap)
+		m, err := fixCount(syscall.Write(f.fd, bcap))
 		n += m
 
 		// If the syscall wrote some data but not all (short write)
@@ -245,7 +246,7 @@ func (f *File) pwrite(b []byte, off int64) (n int, err error) {
 	if needsMaxRW && len(b) > maxRW {
 		b = b[:maxRW]
 	}
-	return syscall.Pwrite(f.fd, b, off)
+	return fixCount(syscall.Pwrite(f.fd, b, off))
 }
 
 // seek sets the offset for the next Read or Write on file to offset, interpreted
@@ -319,7 +320,31 @@ func basename(name string) string {
 func TempDir() string {
 	dir := Getenv("TMPDIR")
 	if dir == "" {
-		dir = "/tmp"
+		if runtime.GOOS == "android" {
+			dir = "/data/local/tmp"
+		} else {
+			dir = "/tmp"
+		}
 	}
 	return dir
 }
+
+// Link creates newname as a hard link to the oldname file.
+// If there is an error, it will be of type *LinkError.
+func Link(oldname, newname string) error {
+	e := syscall.Link(oldname, newname)
+	if e != nil {
+		return &LinkError{"link", oldname, newname, e}
+	}
+	return nil
+}
+
+// Symlink creates newname as a symbolic link to oldname.
+// If there is an error, it will be of type *LinkError.
+func Symlink(oldname, newname string) error {
+	e := syscall.Symlink(oldname, newname)
+	if e != nil {
+		return &LinkError{"symlink", oldname, newname, e}
+	}
+	return nil
+}