runtime: fix solaris build, part 2

This file was already assigned to another CL
so it didn't make it into the build fix CL. Sigh.

TBR=iant
CC=golang-codereviews
https://golang.org/cl/144850043

src/runtime/os_solaris.go

@@ -31,9 +31,10 @@ var asmsysvicall6 libcFunc
 //go:nosplit
 func sysvicall0(fn *libcFunc) uintptr {
 	libcall := &getg().m.libcall
-	libcall.fn = unsafe.Pointer(fn)
+	libcall.fn = uintptr(unsafe.Pointer(fn))
 	libcall.n = 0
-	libcall.args = unsafe.Pointer(fn) // it's unused but must be non-nil, otherwise crashes
+	// TODO(rsc): Why is noescape necessary here and below?
+	libcall.args = uintptr(noescape(unsafe.Pointer(&fn))) // it's unused but must be non-nil, otherwise crashes
 	asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(libcall))
 	return libcall.r1
 }
@@ -41,9 +42,9 @@ func sysvicall0(fn *libcFunc) uintptr {
 //go:nosplit
 func sysvicall1(fn *libcFunc, a1 uintptr) uintptr {
 	libcall := &getg().m.libcall
-	libcall.fn = unsafe.Pointer(fn)
+	libcall.fn = uintptr(unsafe.Pointer(fn))
 	libcall.n = 1
-	libcall.args = noescape(unsafe.Pointer(&a1))
+	libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
 	asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(libcall))
 	return libcall.r1
 }
@@ -51,9 +52,9 @@ func sysvicall1(fn *libcFunc, a1 uintptr) uintptr {
 //go:nosplit
 func sysvicall2(fn *libcFunc, a1, a2 uintptr) uintptr {
 	libcall := &getg().m.libcall
-	libcall.fn = unsafe.Pointer(fn)
+	libcall.fn = uintptr(unsafe.Pointer(fn))
 	libcall.n = 2
-	libcall.args = noescape(unsafe.Pointer(&a1))
+	libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
 	asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(libcall))
 	return libcall.r1
 }
@@ -61,9 +62,9 @@ func sysvicall2(fn *libcFunc, a1, a2 uintptr) uintptr {
 //go:nosplit
 func sysvicall3(fn *libcFunc, a1, a2, a3 uintptr) uintptr {
 	libcall := &getg().m.libcall
-	libcall.fn = unsafe.Pointer(fn)
+	libcall.fn = uintptr(unsafe.Pointer(fn))
 	libcall.n = 3
-	libcall.args = noescape(unsafe.Pointer(&a1))
+	libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
 	asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(libcall))
 	return libcall.r1
 }
@@ -71,9 +72,9 @@ func sysvicall3(fn *libcFunc, a1, a2, a3 uintptr) uintptr {
 //go:nosplit
 func sysvicall4(fn *libcFunc, a1, a2, a3, a4 uintptr) uintptr {
 	libcall := &getg().m.libcall
-	libcall.fn = unsafe.Pointer(fn)
+	libcall.fn = uintptr(unsafe.Pointer(fn))
 	libcall.n = 4
-	libcall.args = noescape(unsafe.Pointer(&a1))
+	libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
 	asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(libcall))
 	return libcall.r1
 }
@@ -81,9 +82,9 @@ func sysvicall4(fn *libcFunc, a1, a2, a3, a4 uintptr) uintptr {
 //go:nosplit
 func sysvicall5(fn *libcFunc, a1, a2, a3, a4, a5 uintptr) uintptr {
 	libcall := &getg().m.libcall
-	libcall.fn = unsafe.Pointer(fn)
+	libcall.fn = uintptr(unsafe.Pointer(fn))
 	libcall.n = 5
-	libcall.args = noescape(unsafe.Pointer(&a1))
+	libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
 	asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(libcall))
 	return libcall.r1
 }
@@ -91,9 +92,9 @@ func sysvicall5(fn *libcFunc, a1, a2, a3, a4, a5 uintptr) uintptr {
 //go:nosplit
 func sysvicall6(fn *libcFunc, a1, a2, a3, a4, a5, a6 uintptr) uintptr {
 	libcall := &getg().m.libcall
-	libcall.fn = unsafe.Pointer(fn)
+	libcall.fn = uintptr(unsafe.Pointer(fn))
 	libcall.n = 6
-	libcall.args = noescape(unsafe.Pointer(&a1))
+	libcall.args = uintptr(noescape(unsafe.Pointer(&a1)))
 	asmcgocall(unsafe.Pointer(&asmsysvicall6), unsafe.Pointer(libcall))
 	return libcall.r1
 }