From 6d4c18a4af447dab97c10e4bd6c8ce5fbb3bcb13 Mon Sep 17 00:00:00 2001
From: Alex Brainman <alex.brainman@gmail.com>
Date: Tue, 29 Nov 2011 10:24:19 +1100
Subject: [PATCH] syscall: implement Syscall15

Fixes #2251.

R=golang-dev, rsc
CC=golang-dev, jp
https://golang.org/cl/5440050
---
 src/pkg/runtime/windows/amd64/sys.s  |  2 +-
 src/pkg/runtime/windows/syscall.goc  | 26 ++++++++++++++++++++++++++
 src/pkg/syscall/dll_windows.go       |  7 +++++++
 src/pkg/syscall/mksyscall_windows.pl |  5 +++++
 4 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/src/pkg/runtime/windows/amd64/sys.s b/src/pkg/runtime/windows/amd64/sys.s
index 113db2004bb..04e36855466 100644
--- a/src/pkg/runtime/windows/amd64/sys.s
+++ b/src/pkg/runtime/windows/amd64/sys.s
@@ -4,7 +4,7 @@
 
 #include "amd64/asm.h"
 
-#define maxargs 12
+#define maxargs 15
 
 // void runtime·asmstdcall(void *c);
 TEXT runtime·asmstdcall(SB),7,$0
diff --git a/src/pkg/runtime/windows/syscall.goc b/src/pkg/runtime/windows/syscall.goc
index 8997fd3a44d..d97a6cafd6d 100644
--- a/src/pkg/runtime/windows/syscall.goc
+++ b/src/pkg/runtime/windows/syscall.goc
@@ -117,3 +117,29 @@ func Syscall12(fn uintptr, nargs uintptr, a1 uintptr, a2 uintptr, a3 uintptr, a4
 	r1 = c.r1;
 	r2 = c.r2;
 }
+
+func Syscall15(fn uintptr, nargs uintptr, a1 uintptr, a2 uintptr, a3 uintptr, a4 uintptr, a5 uintptr, a6 uintptr, a7 uintptr, a8 uintptr, a9 uintptr, a10 uintptr, a11 uintptr, a12 uintptr, a13 uintptr, a14 uintptr, a15 uintptr) (r1 uintptr, r2 uintptr, err uintptr) {
+	WinCall c;
+
+	USED(a2);
+	USED(a3);
+	USED(a4);
+	USED(a5);
+	USED(a6);
+	USED(a7);
+	USED(a8);
+	USED(a9);
+	USED(a10);
+	USED(a11);
+	USED(a12);
+	USED(a13);
+	USED(a14);
+	USED(a15);
+	c.fn = (void*)fn;
+	c.n = nargs;
+	c.args = &a1;
+	runtime·cgocall(runtime·asmstdcall, &c);
+	err = c.err;
+	r1 = c.r1;
+	r2 = c.r2;
+}
diff --git a/src/pkg/syscall/dll_windows.go b/src/pkg/syscall/dll_windows.go
index c6acdfce2c3..88f5a75777b 100644
--- a/src/pkg/syscall/dll_windows.go
+++ b/src/pkg/syscall/dll_windows.go
@@ -37,6 +37,7 @@ func Syscall(trap, nargs, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
 func Syscall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
 func Syscall9(trap, nargs, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno)
 func Syscall12(trap, nargs, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12 uintptr) (r1, r2 uintptr, err Errno)
+func Syscall15(trap, nargs, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13, a14, a15 uintptr) (r1, r2 uintptr, err Errno)
 func loadlibrary(filename *uint16) (handle, err Errno)
 func getprocaddress(handle uintptr, procname *uint8) (proc uintptr, err Errno)
 
@@ -147,6 +148,12 @@ func (p *Proc) Call(a ...uintptr) (r1, r2 uintptr, err error) {
 		return Syscall12(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], 0)
 	case 12:
 		return Syscall12(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], a[11])
+	case 13:
+		return Syscall15(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], a[11], a[12], 0, 0)
+	case 14:
+		return Syscall15(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], a[11], a[12], a[13], 0)
+	case 15:
+		return Syscall15(p.Addr(), uintptr(len(a)), a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7], a[8], a[9], a[10], a[11], a[12], a[13], a[14])
 	default:
 		panic("Call " + p.Name + " with too many arguments " + itoa(len(a)) + ".")
 	}
diff --git a/src/pkg/syscall/mksyscall_windows.pl b/src/pkg/syscall/mksyscall_windows.pl
index 7ea227e6318..3b3df92bb72 100755
--- a/src/pkg/syscall/mksyscall_windows.pl
+++ b/src/pkg/syscall/mksyscall_windows.pl
@@ -190,6 +190,11 @@ while(<>) {
 		while(@args < 12) {
 			push @args, "0";
 		}
+	} elsif(@args <= 15) {
+		$asm = "${syscalldot}Syscall15";
+		while(@args < 15) {
+			push @args, "0";
+		}
 	} else {
 		print STDERR "$ARGV:$.: too many arguments to system call\n";
 	}