From 49947b33ff2fc3982e6e5e0815d0daf3e46188eb Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Wed, 18 Jan 2017 03:37:52 +0000
Subject: [PATCH] syscall, golang_org/x/net/lif: fixes for gccgo on Solaris

    Reviewed-on: https://go-review.googlesource.com/35390

From-SVN: r244563
---
 gcc/go/gofrontend/MERGE                       |  2 +-
 libgo/go/golang_org/x/net/lif/link.go         |  2 +-
 libgo/go/golang_org/x/net/lif/syscall.go      | 19 ++++---------------
 ...{zsys_solaris_amd64.go => zsys_solaris.go} | 11 +++--------
 libgo/go/syscall/syscall_solaris.go           | 17 +++++++++++++++++
 5 files changed, 26 insertions(+), 25 deletions(-)
 rename libgo/go/golang_org/x/net/lif/{zsys_solaris_amd64.go => zsys_solaris.go} (90%)

diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index 375ce176764..f9897529b73 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-223cba75b947afc1ee5a13a60c15c66f6ff355c1
+2b3d389f961b8461b3fdf42318a628f68b56f8b1
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.
diff --git a/libgo/go/golang_org/x/net/lif/link.go b/libgo/go/golang_org/x/net/lif/link.go
index 76fa6c68756..6a77a8f5d80 100644
--- a/libgo/go/golang_org/x/net/lif/link.go
+++ b/libgo/go/golang_org/x/net/lif/link.go
@@ -84,7 +84,7 @@ func links(eps []endpoint, name string) ([]Link, error) {
 		b := make([]byte, lifn.Count*sizeofLifreq)
 		lifc.Family = uint16(ep.af)
 		lifc.Len = lifn.Count * sizeofLifreq
-		littleEndian.PutUint64(lifc.Lifcu[:], uint64(uintptr(unsafe.Pointer(&b[0]))))
+		lifc.Lifcu = unsafe.Pointer(&b[0])
 		ioc = int64(sysSIOCGLIFCONF)
 		if err := ioctl(ep.s, uintptr(ioc), unsafe.Pointer(&lifc)); err != nil {
 			continue
diff --git a/libgo/go/golang_org/x/net/lif/syscall.go b/libgo/go/golang_org/x/net/lif/syscall.go
index 5fe073620a4..ea7541456bd 100644
--- a/libgo/go/golang_org/x/net/lif/syscall.go
+++ b/libgo/go/golang_org/x/net/lif/syscall.go
@@ -11,23 +11,12 @@ import (
 	"unsafe"
 )
 
-//go:cgo_import_dynamic libc_ioctl ioctl "libc.so"
-
-//go:linkname procIoctl libc_ioctl
-
-var procIoctl uintptr
-
-func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)
-
-// TODO: replace with runtime.KeepAlive when available
-//go:noescape
-func keepAlive(p unsafe.Pointer)
+//extern __go_ioctl_ptr
+func libc_ioctl(int32, int32, unsafe.Pointer) int32
 
 func ioctl(s, ioc uintptr, arg unsafe.Pointer) error {
-	_, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procIoctl)), 3, s, ioc, uintptr(arg), 0, 0, 0)
-	keepAlive(arg)
-	if errno != 0 {
-		return error(errno)
+	if libc_ioctl(int32(s), int32(ioc), arg) < 0 {
+		return syscall.GetErrno()
 	}
 	return nil
 }
diff --git a/libgo/go/golang_org/x/net/lif/zsys_solaris_amd64.go b/libgo/go/golang_org/x/net/lif/zsys_solaris.go
similarity index 90%
rename from libgo/go/golang_org/x/net/lif/zsys_solaris_amd64.go
rename to libgo/go/golang_org/x/net/lif/zsys_solaris.go
index 94231c49c96..6452dd8ebb0 100644
--- a/libgo/go/golang_org/x/net/lif/zsys_solaris_amd64.go
+++ b/libgo/go/golang_org/x/net/lif/zsys_solaris.go
@@ -3,6 +3,8 @@
 
 package lif
 
+import "unsafe"
+
 const (
 	sysAF_UNSPEC = 0x0
 	sysAF_INET   = 0x2
@@ -59,15 +61,11 @@ const (
 )
 
 const (
-	sizeofLifnum       = 0xc
 	sizeofLifreq       = 0x178
-	sizeofLifconf      = 0x18
-	sizeofLifIfinfoReq = 0x10
 )
 
 type sysLifnum struct {
 	Family    uint16
-	Pad_cgo_0 [2]byte
 	Flags     int32
 	Count     int32
 }
@@ -81,16 +79,13 @@ type lifreq struct {
 
 type lifconf struct {
 	Family    uint16
-	Pad_cgo_0 [2]byte
 	Flags     int32
 	Len       int32
-	Pad_cgo_1 [4]byte
-	Lifcu     [8]byte
+	Lifcu     unsafe.Pointer
 }
 
 type lifIfinfoReq struct {
 	Maxhops      uint8
-	Pad_cgo_0    [3]byte
 	Reachtime    uint32
 	Reachretrans uint32
 	Maxmtu       uint32
diff --git a/libgo/go/syscall/syscall_solaris.go b/libgo/go/syscall/syscall_solaris.go
index 0b2d7483e42..673ba8223fc 100644
--- a/libgo/go/syscall/syscall_solaris.go
+++ b/libgo/go/syscall/syscall_solaris.go
@@ -29,3 +29,20 @@ func direntNamlen(buf []byte) (uint64, bool) {
 	}
 	return reclen - uint64(unsafe.Offsetof(Dirent{}.Name)), true
 }
+
+//sysnb getexecname() (execname unsafe.Pointer, err error)
+//getexecname() *byte
+
+func Getexecname() (path string, err error) {
+	ptr, err := getexecname()
+	if err != nil {
+		return "", err
+	}
+	bytes := (*[1 << 29]byte)(ptr)[:]
+	for i, b := range bytes {
+		if b == 0 {
+			return string(bytes[:i]), nil
+		}
+	}
+	panic("unreachable")
+}
-- 
2.30.2