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runtime: syscall to return both AX and DX for windows/386

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Fixes #2181.

R=golang-dev, jp
CC=golang-dev
https://golang.org/cl/5000042
This commit is contained in:
Alex Brainman 2011-09-14 16:19:45 +10:00
parent 2b3b5cf4de
commit 7406379fff
7 changed files with 138 additions and 41 deletions
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3
src/pkg/runtime/runtime.h
View File

@ -307,7 +307,8 @@ struct WinCall
void (*fn)(void*);
uintptr n; // number of parameters
void* args; // parameters
uintptr r; // return value
uintptr r1; // return values
uintptr r2;
uintptr err; // error number
};

71
src/pkg/runtime/syscall_windows_test.go
View File

@ -39,6 +39,77 @@ func TestStdCall(t *testing.T) {
}
}
func Test64BitReturnStdCall(t *testing.T) {
const (
VER_BUILDNUMBER = 0x0000004
VER_MAJORVERSION = 0x0000002
VER_MINORVERSION = 0x0000001
VER_PLATFORMID = 0x0000008
VER_PRODUCT_TYPE = 0x0000080
VER_SERVICEPACKMAJOR = 0x0000020
VER_SERVICEPACKMINOR = 0x0000010
VER_SUITENAME = 0x0000040
VER_EQUAL = 1
VER_GREATER = 2
VER_GREATER_EQUAL = 3
VER_LESS = 4
VER_LESS_EQUAL = 5
ERROR_OLD_WIN_VERSION = 1150
)
type OSVersionInfoEx struct {
OSVersionInfoSize uint32
MajorVersion uint32
MinorVersion uint32
BuildNumber uint32
PlatformId uint32
CSDVersion [128]uint16
ServicePackMajor uint16
ServicePackMinor uint16
SuiteMask uint16
ProductType byte
Reserve byte
}
kernel32, e := syscall.LoadLibrary("kernel32.dll")
if e != 0 {
t.Fatalf("LoadLibrary(kernel32.dll) failed: %s", syscall.Errstr(e))
}
setMask, e := syscall.GetProcAddress(kernel32, "VerSetConditionMask")
if e != 0 {
t.Fatalf("GetProcAddress(kernel32.dll, VerSetConditionMask) failed: %s", syscall.Errstr(e))
}
verifyVersion, e := syscall.GetProcAddress(kernel32, "VerifyVersionInfoW")
if e != 0 {
t.Fatalf("GetProcAddress(kernel32.dll, VerifyVersionInfoW) failed: %s", syscall.Errstr(e))
}
var m1, m2 uintptr
m1, m2, _ = syscall.Syscall6(setMask, 4, m1, m2, VER_MAJORVERSION, VER_GREATER_EQUAL, 0, 0)
m1, m2, _ = syscall.Syscall6(setMask, 4, m1, m2, VER_MINORVERSION, VER_GREATER_EQUAL, 0, 0)
m1, m2, _ = syscall.Syscall6(setMask, 4, m1, m2, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL, 0, 0)
m1, m2, _ = syscall.Syscall6(setMask, 4, m1, m2, VER_SERVICEPACKMINOR, VER_GREATER_EQUAL, 0, 0)
vi := OSVersionInfoEx{
MajorVersion: 5,
MinorVersion: 1,
ServicePackMajor: 2,
ServicePackMinor: 0,
}
vi.OSVersionInfoSize = uint32(unsafe.Sizeof(vi))
r, _, e2 := syscall.Syscall6(verifyVersion,
4,
uintptr(unsafe.Pointer(&vi)),
VER_MAJORVERSION|VER_MINORVERSION|VER_SERVICEPACKMAJOR|VER_SERVICEPACKMINOR,
m1, m2, 0, 0)
if r == 0 && e2 != ERROR_OLD_WIN_VERSION {
t.Errorf("VerifyVersionInfo failed: (%d) %s", e2, syscall.Errstr(int(e2)))
}
}
func TestCDecl(t *testing.T) {
h, e := syscall.LoadLibrary("user32.dll")
if e != 0 {

24
src/pkg/runtime/windows/386/sys.s
View File

@ -6,35 +6,35 @@
// void runtime·asmstdcall(void *c);
TEXT runtime·asmstdcall(SB),7,$0
MOVL c+0(FP), DX
MOVL c+0(FP), BX
// SetLastError(0).
MOVL $0, 0x34(FS)
// Copy args to the stack.
MOVL SP, BP
MOVL wincall_n(DX), CX // words
MOVL CX, BX
SALL $2, BX
SUBL BX, SP // room for args
MOVL wincall_n(BX), CX // words
MOVL CX, AX
SALL $2, AX
SUBL AX, SP // room for args
MOVL SP, DI
MOVL wincall_args(DX), SI
MOVL wincall_args(BX), SI
CLD
REP; MOVSL
// Call stdcall or cdecl function.
// DI SI BP BX are preserved, SP is not
MOVL wincall_fn(DX), AX
CALL AX
CALL wincall_fn(BX)
MOVL BP, SP
// Return result.
MOVL c+0(FP), DX
MOVL AX, wincall_r(DX)
MOVL c+0(FP), BX
MOVL AX, wincall_r1(BX)
MOVL DX, wincall_r2(BX)
// GetLastError().
MOVL 0x34(FS), BX
MOVL BX, wincall_err(DX)
MOVL 0x34(FS), AX
MOVL AX, wincall_err(BX)
RET

2
src/pkg/runtime/windows/amd64/sys.s
View File

@ -49,7 +49,7 @@ loadregs:
// Return result.
POPQ CX
MOVQ AX, wincall_r(CX)
MOVQ AX, wincall_r1(CX)
// GetLastError().
MOVQ 0x30(GS), DI

1
src/pkg/runtime/windows/os.h
View File

@ -12,7 +12,6 @@ extern void *runtime·GetProcAddress;
#pragma varargck type runtime·stdcall uintptr
void runtime·asmstdcall(void *c);
void *runtime·stdcall(void *fn, int32 count, ...);
uintptr runtime·syscall(void *fn, uintptr nargs, void *args, uintptr *err);
uintptr runtime·getlasterror(void);
void runtime·setlasterror(uintptr err);

61
src/pkg/runtime/windows/syscall.goc
View File

@ -5,15 +5,28 @@
package syscall
#include "runtime.h"
#include "os.h"
#include "cgocall.h"
func loadlibraryex(filename uintptr) (handle uintptr) {
uintptr args[3] = { filename };
handle = runtime·syscall(runtime·LoadLibraryEx, 3, args, nil);
WinCall c;
c.fn = runtime·LoadLibraryEx;
c.n = 3;
c.args = &args[0];
runtime·cgocall(runtime·asmstdcall, &c);
handle = c.r1;
}
func getprocaddress(handle uintptr, procname uintptr) (proc uintptr) {
WinCall c;
USED(procname);
proc = runtime·syscall(runtime·GetProcAddress, 2, &handle, nil);
c.fn = runtime·GetProcAddress;
c.n = 2;
c.args = &handle;
runtime·cgocall(runtime·asmstdcall, &c);
proc = c.r1;
}
func NewCallback(fn Eface) (code uintptr) {
@ -25,23 +38,39 @@ func NewCallbackCDecl(fn Eface) (code uintptr) {
}
func Syscall(fn uintptr, nargs uintptr, a1 uintptr, a2 uintptr, a3 uintptr) (r1 uintptr, r2 uintptr, err uintptr) {
WinCall c;
USED(a2);
USED(a3);
r1 = runtime·syscall((void*)fn, nargs, &a1, &err);
r2 = 0;
c.fn = (void*)fn;
c.n = nargs;
c.args = &a1;
runtime·cgocall(runtime·asmstdcall, &c);
err = c.err;
r1 = c.r1;
r2 = c.r2;
}
func Syscall6(fn uintptr, nargs uintptr, a1 uintptr, a2 uintptr, a3 uintptr, a4 uintptr, a5 uintptr, a6 uintptr) (r1 uintptr, r2 uintptr, err uintptr) {
WinCall c;
USED(a2);
USED(a3);
USED(a4);
USED(a5);
USED(a6);
r1 = runtime·syscall((void*)fn, nargs, &a1, &err);
r2 = 0;
c.fn = (void*)fn;
c.n = nargs;
c.args = &a1;
runtime·cgocall(runtime·asmstdcall, &c);
err = c.err;
r1 = c.r1;
r2 = c.r2;
}
func Syscall9(fn uintptr, nargs uintptr, a1 uintptr, a2 uintptr, a3 uintptr, a4 uintptr, a5 uintptr, a6 uintptr, a7 uintptr, a8 uintptr, a9 uintptr) (r1 uintptr, r2 uintptr, err uintptr) {
WinCall c;
USED(a2);
USED(a3);
USED(a4);
@ -50,11 +79,18 @@ func Syscall9(fn uintptr, nargs uintptr, a1 uintptr, a2 uintptr, a3 uintptr, a4
USED(a7);
USED(a8);
USED(a9);
r1 = runtime·syscall((void*)fn, nargs, &a1, &err);
r2 = 0;
c.fn = (void*)fn;
c.n = nargs;
c.args = &a1;
runtime·cgocall(runtime·asmstdcall, &c);
err = c.err;
r1 = c.r1;
r2 = c.r2;
}
func Syscall12(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) (r1 uintptr, r2 uintptr, err uintptr) {
WinCall c;
USED(a2);
USED(a3);
USED(a4);
@ -66,6 +102,11 @@ func Syscall12(fn uintptr, nargs uintptr, a1 uintptr, a2 uintptr, a3 uintptr, a4
USED(a10);
USED(a11);
USED(a12);
r1 = runtime·syscall((void*)fn, nargs, &a1, &err);
r2 = 0;
c.fn = (void*)fn;
c.n = nargs;
c.args = &a1;
runtime·cgocall(runtime·asmstdcall, &c);
err = c.err;
r1 = c.r1;
r2 = c.r2;
}

17
src/pkg/runtime/windows/thread.c
View File

@ -6,7 +6,6 @@
#include "type.h"
#include "defs.h"
#include "os.h"
#include "cgocall.h"
#pragma dynimport runtime·CloseHandle CloseHandle "kernel32.dll"
#pragma dynimport runtime·CreateEvent CreateEventA "kernel32.dll"
@ -228,21 +227,7 @@ runtime·stdcall(void *fn, int32 count, ...)
c.n = count;
c.args = (uintptr*)&count + 1;
runtime·asmcgocall(runtime·asmstdcall, &c);
return (void*)c.r;
}
uintptr
runtime·syscall(void *fn, uintptr nargs, void *args, uintptr *err)
{
WinCall c;
c.fn = fn;
c.n = nargs;
c.args = args;
runtime·cgocall(runtime·asmstdcall, &c);
if(err)
*err = c.err;
return c.r;
return (void*)c.r1;
}
uint32