add fstat, stat

R=ken
OCL=13497
CL=13497

src/syscall/Makefile

@@ -13,6 +13,7 @@ PKG=syscall.a
 OFILES=\
 	syscall.$O \
 	errstr_$(GOOS).$O \
+	stat_$(GOARCH)_$(GOOS).$O \
 	syscall_$(GOARCH)_$(GOOS).$O \
 
 

src/syscall/stat_amd64_darwin.go

+// Copyright 2009 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package syscall
+
+func stat(*byte, *Stat) (ret int64, errno int64);
+func fstat(int64, *Stat) (ret int64, errno int64);
+
+export Stat
+export stat, fstat
+
+// Stat and relatives for Linux
+
+type dev_t uint32;
+type ino_t uint64;
+type mode_t uint16;
+type nlink_t uint16;
+type uid_t uint32;
+type gid_t uint32;
+type off_t int64;
+type blksize_t int64;
+type blkcnt_t int64;
+type time_t int64;
+
+type Timespec struct {
+	tv_sec	time_t;
+	tv_nsec	int64;
+}
+
+type Stat struct {
+	st_dev	dev_t;     /* ID of device containing file */
+	st_mode	mode_t;    /* protection */
+	st_nlink	nlink_t;   /* number of hard links */
+	st_ino	ino_t;     /* inode number */
+	st_uid	uid_t;     /* user ID of owner */
+	st_gid	gid_t;     /* group ID of owner */
+	st_rdev	dev_t;    /* device ID (if special file) */
+	st_atime	Timespec;   /* time of last access */
+	st_mtime	Timespec;   /* time of last modification */
+	st_ctime	Timespec;   /* time of last status change */
+	st_birthtimespec	Timespec;   /* birth time */
+	st_size	off_t;    /* total size, in bytes */
+	st_blocks	blkcnt_t;  /* number of blocks allocated */
+	st_blksize	blksize_t; /* blocksize for filesystem I/O */
+	st_flags	uint32;
+	st_gen		uint32;
+ 	st_qspare[2]	int64;
+}

src/syscall/stat_amd64_linux.go

+// Copyright 2009 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package syscall
+
+func stat(*byte, *Stat) (ret int64, errno int64);
+func fstat(int64, *Stat) (ret int64, errno int64);
+
+export Stat
+export stat, fstat
+
+// Stat and relatives for Linux
+
+type dev_t uint64;
+type ino_t uint64;
+type mode_t uint32;
+type nlink_t uint64;
+type uid_t uint32;
+type gid_t uint32;
+type off_t int64;
+type blksize_t int64;
+type blkcnt_t int64;
+type time_t int64;
+
+type Timespec struct {
+	tv_sec	time_t;
+	tv_nsec	int64;
+}
+
+type Stat struct {
+	st_dev	dev_t;     /* ID of device containing file */
+	st_ino	ino_t;     /* inode number */
+	st_nlink	nlink_t;   /* number of hard links */
+	st_mode	mode_t;    /* protection */
+	st_uid	uid_t;     /* user ID of owner */
+	st_gid	gid_t;     /* group ID of owner */
+	pad0	int32;
+	st_rdev	dev_t;    /* device ID (if special file) */
+	st_size	off_t;    /* total size, in bytes */
+	st_blksize	blksize_t; /* blocksize for filesystem I/O */
+	st_blocks	blkcnt_t;  /* number of blocks allocated */
+	st_atime	Timespec;   /* time of last access */
+	st_mtime	Timespec;   /* time of last modification */
+	st_ctime	Timespec;   /* time of last status change */
+}
+

src/syscall/syscall.go

@@ -4,8 +4,12 @@
 
 package syscall
 
-// for simplicity of addressing in assembler, all integers are 64 bits
-// in these calling sequences.
+/*
+ * These calls have signatures that are independent of operating system.
+ *
+ * For simplicity of addressing in assembler, all integers are 64 bits
+ * in these calling sequences.
+ */
 
 func open(*byte, int64) (ret int64, errno int64);
 func close(int64) (ret int64, errno int64);

src/syscall/syscall_amd64_darwin.s

@@ -6,13 +6,6 @@
 // System calls for AMD64, Darwin
 //
 
-//TEXT	syscall·exit(SB),1,$-8
-//	MOVL	8(SP), DI		// arg 1 exit status
-//	MOVL	$(0x2000000+1), AX	// syscall entry
-//	SYSCALL
-//	CALL	notok(SB)
-//	RET
-
 TEXT	syscall·open(SB),1,$-8
 	MOVQ	8(SP), DI
 	MOVQ	16(SP), SI
@@ -67,41 +60,28 @@ TEXT	syscall·write(SB),1,$-8
 	MOVQ	$0, 40(SP)
 	RET
 
-//TEXT	fstat(SB),1,$-8
-//	MOVL	8(SP), DI
-//	MOVQ	16(SP), SI
-//	MOVL	$(0x2000000+339), AX	// syscall entry; really fstat64
-//	SYSCALL
-//	RET
-//
-//TEXT	syscall·sigaction(SB),1,$-8
-//	MOVL	8(SP), DI		// arg 1 sig
-//	MOVQ	16(SP), SI		// arg 2 act
-//	MOVQ	24(SP), DX		// arg 3 oact
-//	MOVQ	24(SP), CX		// arg 3 oact
-//	MOVQ	24(SP), R10		// arg 3 oact
-//	MOVL	$(0x2000000+46), AX	// syscall entry
-//	SYSCALL
-//	JCC	2(PC)
-//	CALL	notok(SB)
-//	RET
-//
-//TEXT sigtramp(SB),1,$24
-//	MOVL	DX,0(SP)
-//	MOVQ	CX,8(SP)
-//	MOVQ	R8,16(SP)
-//	CALL	sighandler(SB)
-//	RET
-//
-//TEXT	syscall·mmap(SB),1,$-8
-//	MOVQ	8(SP), DI		// arg 1 addr
-//	MOVL	16(SP), SI		// arg 2 len
-//	MOVL	20(SP), DX		// arg 3 prot
-//	MOVL	24(SP), R10		// arg 4 flags
-//	MOVL	28(SP), R8		// arg 5 fid
-//	MOVL	32(SP), R9		// arg 6 offset
-//	MOVL	$(0x2000000+197), AX	// syscall entry
-//	SYSCALL
-//	JCC	2(PC)
-//	CALL	notok(SB)
-//	RET
+TEXT	syscall·stat(SB),1,$-8
+	MOVQ	8(SP), DI
+	MOVQ	16(SP), SI
+	MOVL	$(0x2000000+338), AX	// syscall entry
+	SYSCALL
+	JCC	4(PC)
+	MOVQ	$-1, 24(SP)
+	MOVQ	AX, 32(SP)
+	RET
+	MOVQ	AX, 24(SP)
+	MOVQ	$0, 32(SP)
+	RET
+
+TEXT	syscall·fstat(SB),1,$-8
+	MOVQ	8(SP), DI
+	MOVQ	16(SP), SI
+	MOVL	$(0x2000000+339), AX	// syscall entry
+	SYSCALL
+	JCC	4(PC)
+	MOVQ	$-1, 24(SP)
+	MOVQ	AX, 32(SP)
+	RET
+	MOVQ	AX, 24(SP)
+	MOVQ	$0, 32(SP)
+	RET

src/syscall/syscall_amd64_linux.s

@@ -6,12 +6,6 @@
 // System calls for AMD64, Linux
 //
 
-//TEXT	sys·exit(SB),1,$0-8
-//	MOVL	8(SP), DI
-//	MOVL	$60, AX
-//	SYSCALL
-//	RET
-
 TEXT	syscall·open(SB),1,$0-16
 	MOVQ	8(SP), DI
 	MOVQ	16(SP), SI
@@ -42,13 +36,6 @@ TEXT	syscall·close(SB),1,$0-16
 	MOVQ	$0, 24(SP)
 	RET
 
-//TEXT	fstat(SB),1,$0-16
-//	MOVL	8(SP), DI
-//	MOVQ	16(SP), SI
-//	MOVL	$5, AX			// syscall entry
-//	SYSCALL
-//	RET
-
 TEXT	syscall·read(SB),1,$0-16
 	MOVL	8(SP), DI
 	MOVQ	16(SP), SI
@@ -81,43 +68,34 @@ TEXT	syscall·write(SB),1,$0-16
 	MOVQ	$0, 40(SP)
 	RET
 
-//TEXT	sys·rt_sigaction(SB),1,$0-32
-//	MOVL	8(SP), DI
-//	MOVQ	16(SP), SI
-//	MOVQ	24(SP), DX
-//	MOVQ	32(SP), CX
-//	MOVL	CX, R10
-//	MOVL	$13, AX			// syscall entry
-//	SYSCALL
-//	RET
-//
-//TEXT	sigtramp(SB),1,$24-16
-//	MOVQ	DI,0(SP)
-//	MOVQ	SI,8(SP)
-//	MOVQ	DX,16(SP)
-//	CALL	sighandler(SB)
-//	RET
-//
-//TEXT	sys·mmap(SB),1,$0-32
-//	MOVQ	8(SP), DI
-//	MOVL	16(SP), SI
-//	MOVL	20(SP), DX
-//	MOVL	24(SP), CX
-//	MOVL	28(SP), R8
-//	MOVL	32(SP), R9
-//
-///* flags arg for ANON is 1000 but sb 20 */
-//	MOVL	CX, AX
-//	ANDL	$~0x1000, CX
-//	ANDL	$0x1000, AX
-//	SHRL	$7, AX
-//	ORL	AX, CX
-//
-//	MOVL	CX, R10
-//	MOVL	$9, AX			// syscall entry
-//	SYSCALL
-//	CMPQ	AX, $0xfffffffffffff001
-//	JLS	2(PC)
-//	CALL	notok(SB)
-//	RET
-//
+TEXT	syscall·stat(SB),1,$0-16
+	MOVQ	8(SP), DI
+	MOVQ	16(SP), SI
+	MOVQ	$0, DX
+	MOVQ	$5, AX			// syscall entry
+	SYSCALL
+	CMPQ	AX, $0xfffffffffffff001
+	JLS	5(PC)
+	MOVQ	$-1, 24(SP)
+	NEGQ	AX
+	MOVQ	AX, 32(SP)
+	RET
+	MOVQ	AX, 24(SP)
+	MOVQ	$0, 32(SP)
+	RET
+
+TEXT	syscall·fstat(SB),1,$0-16
+	MOVL	8(SP), DI
+	MOVQ	16(SP), SI
+	MOVQ	$0, DX
+	MOVQ	$5, AX			// syscall entry
+	SYSCALL
+	CMPQ	AX, $0xfffffffffffff001
+	JLS	5(PC)
+	MOVQ	$-1, 24(SP)
+	NEGQ	AX
+	MOVQ	AX, 32(SP)
+	RET
+	MOVQ	AX, 24(SP)
+	MOVQ	$0, 32(SP)
+	RET