- mark syscall support routines as non-stack-generating

- add unlink, creat
- add constants for open
- fix some comments

R=gri
OCL=13654
CL=13656

src/syscall/file_amd64_darwin.go

@@ -4,16 +4,17 @@
 
 package syscall
 
+// File operations for Darwin
+
 import syscall "syscall"
 
 export Stat
 export stat, fstat, lstat
-export open, close, read, write, pipe
+export open, creat, close, read, write, pipe
+export unlink
 
 func	StatToInt(s *Stat) int64;
 
-// Stat and relatives for Darwin
-
 type dev_t uint32;
 type ino_t uint64;
 type mode_t uint16;
@@ -50,9 +51,43 @@ type Stat struct {
  	st_qspare[2]	int64;
 }
 
-func open(name *byte, mode int64) (ret int64, errno int64) {
+const (
+	O_RDONLY = 0x0;
+	O_WRONLY = 0x1;
+	O_RDWR = 0x2;
+	O_APPEND = 0x8;
+	O_ASYNC = 0x40;
+	O_CREAT = 0x200;
+	O_NOCTTY = 0x20000;
+	O_NONBLOCK = 0x4;
+	O_NDELAY = O_NONBLOCK;
+	O_SYNC = 0x80;
+	O_TRUNC = 0x400;
+)
+
+export (
+	O_RDONLY,
+	O_WRONLY,
+	O_RDWR,
+	O_APPEND,
+	O_ASYNC,
+	O_CREAT,
+	O_NOCTTY,
+	O_NONBLOCK,
+	O_NDELAY,
+	O_SYNC,
+	O_TRUNC
+)
+
+func open(name *byte, mode int64, flags int64) (ret int64, errno int64) {
 	const SYSOPEN = 5;
-	r1, r2, err := syscall.Syscall(SYSOPEN, AddrToInt(name), mode, 0);
+	r1, r2, err := syscall.Syscall(SYSOPEN, AddrToInt(name), mode, flags);
+	return r1, err;
+}
+
+func creat(name *byte, mode int64) (ret int64, errno int64) {
+	const SYSOPEN = 5;
+	r1, r2, err := syscall.Syscall(SYSOPEN, AddrToInt(name), mode, O_CREAT|O_WRONLY|O_TRUNC);
 	return r1, err;
 }
 
@@ -82,7 +117,7 @@ func pipe(fds *[2]int64) (ret int64, errno int64) {
 	}
 	fds[0] = r1;
 	fds[1] = r2;
-	return 0, err;
+	return 0, 0;
 }
 
 func stat(name *byte, buf *Stat) (ret int64, errno int64) {
@@ -102,3 +137,9 @@ func fstat(fd int64, buf *Stat) (ret int64, errno int64) {
 	r1, r2, err := syscall.Syscall(SYSFSTAT, fd, StatToInt(buf), 0);
 	return r1, err;
 }
+
+func unlink(name *byte) (ret int64, errno int64) {
+	const SYSUNLINK = 10;
+	r1, r2, err := syscall.Syscall(SYSUNLINK, AddrToInt(name), 0, 0);
+	return r1, err;
+}

src/syscall/file_amd64_linux.go

@@ -4,17 +4,18 @@
 
 package syscall
 
+// File operations for Linux
+
 import syscall "syscall"
 
 export Stat
 export stat, fstat, lstat
-export open, close, read, write, pipe
+export open, creat, close, read, write, pipe
+export unlink
 
 func	StatToInt(s *Stat) int64;
 func	Addr32ToInt(s *int32) int64;
 
-// Stat and relatives for Linux
-
 type dev_t uint64;
 type ino_t uint64;
 type mode_t uint32;
@@ -51,9 +52,43 @@ type Stat struct {
 	st_unused6	int64;
 }
 
-func open(name *byte, mode int64) (ret int64, errno int64) {
+const (
+	O_RDONLY = 0x0;
+	O_WRONLY = 0x1;
+	O_RDWR = 0x2;
+	O_APPEND = 0x400;
+	O_ASYNC = 0x2000;
+	O_CREAT = 0x40;
+	O_NOCTTY = 0x100;
+	O_NONBLOCK = 0x800;
+	O_NDELAY = O_NONBLOCK;
+	O_SYNC = 0x1000;
+	O_TRUNC = 0x200;
+)
+
+export (
+	O_RDONLY,
+	O_WRONLY,
+	O_RDWR,
+	O_APPEND,
+	O_ASYNC,
+	O_CREAT,
+	O_NOCTTY,
+	O_NONBLOCK,
+	O_NDELAY,
+	O_SYNC,
+	O_TRUNC
+)
+
+func open(name *byte, mode int64, flags int64) (ret int64, errno int64) {
 	const SYSOPEN = 2;
-	r1, r2, err := syscall.Syscall(SYSOPEN, AddrToInt(name), mode, 0);
+	r1, r2, err := syscall.Syscall(SYSOPEN, AddrToInt(name), mode, flags);
+	return r1, err;
+}
+
+func creat(name *byte, mode int64) (ret int64, errno int64) {
+	const SYSOPEN = 2;
+	r1, r2, err := syscall.Syscall(SYSOPEN, AddrToInt(name), mode, O_CREAT|O_WRONLY|O_TRUNC);
 	return r1, err;
 }
 
@@ -64,7 +99,6 @@ func close(fd int64) (ret int64, errno int64) {
 }
 
 func read(fd int64, buf *byte, nbytes int64) (ret int64, errno int64) {
-print "READ: ", fd, " ", nbytes, "\n";
 	const SYSREAD = 0;
 	r1, r2, err := syscall.Syscall(SYSREAD, fd, AddrToInt(buf), nbytes);
 	return r1, err;
@@ -85,7 +119,7 @@ func pipe(fds *[2]int64) (ret int64, errno int64) {
 	}
 	fds[0] = int64(t[0]);
 	fds[1] = int64(t[1]);
-	return 0, err;
+	return 0, 0;
 }
 
 func stat(name *byte, buf *Stat) (ret int64, errno int64) {
@@ -106,3 +140,8 @@ func fstat(fd int64, buf *Stat) (ret int64, errno int64) {
 	return r1, err;
 }
 
+func unlink(name *byte) (ret int64, errno int64) {
+	const SYSUNLINK = 87;
+	r1, r2, err := syscall.Syscall(SYSUNLINK, AddrToInt(name), 0, 0);
+	return r1, err;
+}

src/syscall/syscall_amd64_darwin.s

@@ -9,7 +9,7 @@
 // func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64);
 // Trap # in AX, args in DI SI DX, return in AX DX
 
-TEXT	syscall·Syscall(SB),1,$-8
+TEXT	syscall·Syscall(SB),7,$-8
 	MOVQ	16(SP), DI
 	MOVQ	24(SP), SI
 	MOVQ	32(SP), DX
@@ -26,12 +26,13 @@ TEXT	syscall·Syscall(SB),1,$-8
 	MOVQ	$0, 56(SP)	// errno
 	RET
 
-TEXT	syscall·AddrToInt(SB),1,$-8
+// conversion operators - really just casts
+TEXT	syscall·AddrToInt(SB),7,$-8
 	MOVQ	8(SP), AX
 	MOVQ	AX, 16(SP)
 	RET
 
-TEXT	syscall·StatToInt(SB),1,$-8
+TEXT	syscall·StatToInt(SB),7,$-8
 	MOVQ	8(SP), AX
 	MOVQ	AX, 16(SP)
 	RET

src/syscall/syscall_amd64_linux.s

@@ -9,7 +9,7 @@
 // func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64);
 // Trap # in AX, args in DI SI DX, return in AX DX
 
-TEXT	syscall·Syscall(SB),1,$-8
+TEXT	syscall·Syscall(SB),7,$-8
 	MOVQ	16(SP), DI
 	MOVQ	24(SP), SI
 	MOVQ	32(SP), DX
@@ -27,17 +27,18 @@ TEXT	syscall·Syscall(SB),1,$-8
 	MOVQ	$0, 56(SP)	// errno
 	RET
 
-TEXT	syscall·AddrToInt(SB),1,$-8
+// conversion operators - really just casts
+TEXT	syscall·AddrToInt(SB),7,$-8
 	MOVQ	8(SP), AX
 	MOVQ	AX, 16(SP)
 	RET
 
-TEXT	syscall·Addr32ToInt(SB),1,$-8
+TEXT	syscall·Addr32ToInt(SB),7,$-8
 	MOVQ	8(SP), AX
 	MOVQ	AX, 16(SP)
 	RET
 
-TEXT	syscall·StatToInt(SB),1,$-8
+TEXT	syscall·StatToInt(SB),7,$-8
 	MOVQ	8(SP), AX
 	MOVQ	AX, 16(SP)
 	RET