make readfile work on darwin

parameterize the system interface a bit

SVN=124981

src/runtime/Makefile

@@ -19,7 +19,8 @@ LIBOFILES=\
 	sys_file.$O\
 
 OFILES=$(RT0OFILES) $(LIBOFILES)
-HFILES=runtime.h
+OS_H=$(GOARCH)_$(GOOS).h
+HFILES=runtime.h $(OS_H_)
 
 install: rt0 $(LIB)
 	cp $(RT0OFILES) $(GOROOT)/lib
@@ -38,5 +39,8 @@ clean:
 %.$O:	%.c
 	$(CC) $<
 
+sys_file.$O:	sys_file.c $(OS_H)
+	$(CC) -D$(GOARCH)_$(GOOS) $<
+
 %.$O:	%.s
 	$(AS) $<

src/runtime/amd64_darwin.h

@@ -0,0 +1,43 @@
+// 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.
+
+/*
+ *  System structs for Darwin, amd64
+ */
+
+typedef uint32 dev_t;
+typedef uint64 ino_t;
+typedef uint16 mode_t;
+typedef uint16 nlink_t;
+typedef uint32 uid_t;
+typedef uint32 gid_t;
+typedef int64 off_t;
+typedef int32 blksize_t;
+typedef int64 blkcnt_t;
+typedef int64 time_t;
+
+struct timespec {
+	time_t tv_sec;
+	int64 tv_nsec;
+};
+
+struct stat {	// really a stat64
+	dev_t st_dev;
+	mode_t st_mode;
+	nlink_t st_nlink;
+	ino_t st_ino;
+	uid_t st_uid;
+	gid_t st_gid;
+	dev_t st_rdev;
+	struct timespec st_atimespec;
+	struct timespec st_mtimespec;
+	struct timespec st_ctimespec;
+	struct timespec st_birthtimespec;
+	off_t st_size;
+	blkcnt_t st_blocks;
+	blksize_t st_blksize;
+	uint32 st_flags;
+	uint32 st_gen;
+ 	int64 st_qspare[2];
+};

src/runtime/amd64_linux.h

@@ -0,0 +1,40 @@
+// 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.
+
+/*
+ *  System structs for Darwin, amd64
+ */
+
+typedef uint64 dev_t;
+typedef uint64 ino_t;
+typedef uint32 mode_t;
+typedef uint64 nlink_t;
+typedef uint32 uid_t;
+typedef uint32 gid_t;
+typedef int64 off_t;
+typedef int64 blksize_t;
+typedef int64 blkcnt_t;
+typedef int64 time_t;
+
+struct timespec {
+	time_t tv_sec;
+	int64 tv_nsec;
+};
+
+struct stat {
+	dev_t	st_dev;     /* ID of device containing file */
+	ino_t	st_ino;     /* inode number */
+	mode_t	st_mode;    /* protection */
+	nlink_t	st_nlink;   /* number of hard links */
+	uid_t	st_uid;     /* user ID of owner */
+	gid_t	st_gid;     /* group ID of owner */
+	dev_t	st_rdev;
+	dev_t	st_rdev;    /* device ID (if special file) */
+	struct timespec	st_atime;   /* time of last access */
+	struct timespec	st_mtime;   /* time of last modification */
+	struct timespec	st_ctime;   /* time of last status change */
+	off_t	st_size;    /* total size, in bytes */
+	blkcnt_t	st_blocks;  /* number of blocks allocated */
+	blksize_t st_blksize; /* blocksize for filesystem I/O */
+};

src/runtime/rt0_amd64_darwin.s

@@ -60,20 +60,21 @@ TEXT	sys·write(SB),1,$-8
 TEXT	open(SB),1,$-8
 	MOVQ	8(SP), DI
 	MOVL	16(SP), SI
-	MOVL	$5, AX			// syscall entry
+	MOVQ	$0, R10
+	MOVL	$(0x2000000+5), AX	// syscall entry
 	SYSCALL
 	RET
 
 TEXT	close(SB),1,$-8
 	MOVL	8(SP), DI
-	MOVL	$6, AX			// syscall entry
+	MOVL	$(0x2000000+6), AX	// syscall entry
 	SYSCALL
 	RET
 
 TEXT	fstat(SB),1,$-8
 	MOVL	8(SP), DI
 	MOVQ	16(SP), SI
-	MOVL	$189, AX			// syscall entry
+	MOVL	$(0x2000000+339), AX	// syscall entry; really fstat64
 	SYSCALL
 	RET
 
@@ -81,7 +82,7 @@ TEXT	read(SB),1,$-8
 	MOVL	8(SP), DI
 	MOVQ	16(SP), SI
 	MOVL	24(SP), DX
-	MOVL	$3, AX			// syscall entry
+	MOVL	$(0x2000000+3), AX	// syscall entry
 	SYSCALL
 	RET
 

src/runtime/sys_file.c

@@ -3,39 +3,7 @@
 // license that can be found in the LICENSE file.
 
 #include "runtime.h"
-
-typedef uint64 dev_t;
-typedef uint64 ino_t;
-typedef uint32 mode_t;
-typedef uint64 nlink_t;
-typedef uint32 uid_t;
-typedef uint32 gid_t;
-typedef int64 off_t;
-typedef int64 blksize_t;
-typedef int64 blkcnt_t;
-typedef int64 time_t;
-
-struct timespec {
-	time_t tv_sec;
-	int64 tv_nsec;
-};
-
-struct stat {
-	dev_t	st_dev;     /* ID of device containing file */
-	ino_t	st_ino;     /* inode number */
-	nlink_t	st_nlink;   /* number of hard links */
-	mode_t	st_mode;    /* protection */
-	uid_t	st_uid;     /* user ID of owner */
-	gid_t	st_gid;     /* group ID of owner */
-	int32	pad0;
-	dev_t	st_rdev;    /* device ID (if special file) */
-	off_t	st_size;    /* total size, in bytes */
-	blksize_t st_blksize; /* blocksize for filesystem I/O */
-	blkcnt_t	st_blocks;  /* number of blocks allocated */
-	struct timespec	st_atime;   /* time of last access */
-	struct timespec	st_mtime;   /* time of last modification */
-	struct timespec	st_ctime;   /* time of last status change */
-};
+#include "sys_structs.h"
 
 void
 sys·readfile(string filein, string fileout, bool okout)

src/runtime/sys_structs.h

@@ -0,0 +1,13 @@
+// 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.
+
+#ifdef amd64_linux
+	#include "amd64_linux.h"
+#else
+	#ifdef amd64_darwin
+		#include "amd64_darwin.h"
+	#endif
+#else
+	You_need_to_write_the_syscall_header
+#endif