[llgo] Roll gofrontend forward

Switch gofrontend to using go.googlesource.com, and
update to 81eb6a3f425b2158c67ee32c0cc973a72ce9d6be.

There are various changes required to update to the
go 1.5 runtime:

typemap.go is changed to accommodate the change in representation for equal/hash algorithms, and the removal of the zero value/type.
CMakeLists.txt is updated to add the build tree to the package search path, so internal packages, which are not installed, are found.
various files changes due to removal of __go_new_nopointers; the same change as in D11863, but with NoUnwindAttribute added to the added runtime functions which are called with "callOnly".
minor cleanups in ssa.go while investigating issues with unwinding/panic handling.

Differential Revisision: http://reviews.llvm.org/D15188

llvm-svn: 263536

1 files changed, 29 insertions, 6 deletions

diff --git a/llgo/third_party/gofrontend/libgo/go/syscall/exec_unix.go b/llgo/third_party/gofrontend/libgo/go/syscall/exec_unix.go
index a49d95bc94c..d1927de9b4b 100644
--- a/llgo/third_party/gofrontend/libgo/go/syscall/exec_unix.go
+++ b/llgo/third_party/gofrontend/libgo/go/syscall/exec_unix.go
@@ -17,6 +17,12 @@ import (
 //sysnb	raw_fork() (pid Pid_t, err Errno)
 //fork() Pid_t
 
+//sysnb	raw_getpid() (pid Pid_t)
+//getpid() Pid_t
+
+//sysnb	raw_getppid() (pid Pid_t)
+//getppid() Pid_t
+
 //sysnb raw_setsid() (err Errno)
 //setsid() Pid_t
 
@@ -35,8 +41,11 @@ import (
 //sysnb	raw_close(fd int) (err Errno)
 //close(fd _C_int) _C_int
 
-//sysnb	raw_ioctl(fd int, cmd int, val int) (rval int, err Errno)
-//ioctl(fd _C_int, cmd _C_int, val _C_int) _C_int
+//sysnb	raw_ioctl(fd int, cmd uintptr, val int) (rval int, err Errno)
+//__go_ioctl(fd _C_int, cmd _C_int, val _C_int) _C_int
+
+//sysnb raw_ioctl_ptr(fd int, cmd uintptr, val unsafe.Pointer) (rval int, err Errno)
+//__go_ioctl_ptr(fd _C_int, cmd _C_int, val unsafe.Pointer) _C_int
 
 //sysnb	raw_execve(argv0 *byte, argv **byte, envv **byte) (err Errno)
 //execve(argv0 *byte, argv **byte, envv **byte) _C_int
@@ -50,6 +59,18 @@ import (
 //sysnb raw_dup2(oldfd int, newfd int) (err Errno)
 //dup2(oldfd _C_int, newfd _C_int) _C_int
 
+//sysnb raw_kill(pid Pid_t, sig Signal) (err Errno)
+//kill(pid Pid_t, sig _C_int) _C_int
+
+//sysnb raw_setgroups(size int, list unsafe.Pointer) (err Errno)
+//setgroups(size Size_t, list *Gid_t) _C_int
+
+//sysnb raw_setuid(uid int) (err Errno)
+//setuid(uid Uid_t) _C_int
+
+//sysnb raw_setgid(gid int) (err Errno)
+//setgid(gid Gid_t) _C_int
+
 // Lock synchronizing creation of new file descriptors with fork.
 //
 // We want the child in a fork/exec sequence to inherit only the
@@ -99,9 +120,11 @@ import (
 
 var ForkLock sync.RWMutex
 
-// StringSlicePtr is deprecated. Use SlicePtrFromStrings instead.
-// If any string contains a NUL byte this function panics instead
-// of returning an error.
+// StringSlicePtr converts a slice of strings to a slice of pointers
+// to NUL-terminated byte arrays. If any string contains a NUL byte
+// this function panics instead of returning an error.
+//
+// Deprecated: Use SlicePtrFromStrings instead.
 func StringSlicePtr(ss []string) []*byte {
 	bb := make([]*byte, len(ss)+1)
 	for i := 0; i < len(ss); i++ {
@@ -112,7 +135,7 @@ func StringSlicePtr(ss []string) []*byte {
 }
 
 // SlicePtrFromStrings converts a slice of strings to a slice of
-// pointers to NUL-terminated byte slices. If any string contains
+// pointers to NUL-terminated byte arrays. If any string contains
 // a NUL byte, it returns (nil, EINVAL).
 func SlicePtrFromStrings(ss []string) ([]*byte, error) {
 	var err error