FreeBSD-specific porting work.

cgo/libmach remain unimplemented. However, compilers, runtime,
and packages are 100%. I still need to go through and implement
missing syscalls (at least make sure they're all listed), but
for all shipped functionality, this is done. Ship! ;)

R=rsc, VenkateshSrinivas
https://golang.org/cl/152142

misc/cgo/stdio/test.bash

@@ -4,7 +4,7 @@
 # license that can be found in the LICENSE file.
 
 set -e
-make hello fib chain
+gomake hello fib chain
 echo '*' hello >run.out
 ./hello >>run.out
 echo '*' fib >>run.out
@@ -12,4 +12,4 @@ echo '*' fib >>run.out
 echo '*' chain >>run.out
 ./chain >>run.out
 diff run.out golden.out
-make clean
+gomake clean

src/cmd/6l/asm.c

@@ -38,6 +38,7 @@
 #define PADDR(a)	((uint32)(a) & ~0x80000000)
 
 char linuxdynld[] = "/lib64/ld-linux-x86-64.so.2";
+char freebsddynld[] = "/libexec/ld-elf.so.1";
 
 char	zeroes[32];
 
@@ -284,7 +285,7 @@ doelf(void)
 	Sym *s, *shstrtab, *dynamic, *dynstr, *d;
 	int h, nsym, t;
 
-	if(HEADTYPE != 7)
+	if(HEADTYPE != 7 && HEADTYPE != 9)
 		return;
 
 	/* predefine strings we need for section headers */
@@ -317,7 +318,14 @@ doelf(void)
 		s = lookup(".interp", 0);
 		s->reachable = 1;
 		s->type = SDATA;	// TODO: rodata
-		addstring(lookup(".interp", 0), linuxdynld);
+		switch(HEADTYPE) {
+		case 7:
+			addstring(lookup(".interp", 0), linuxdynld);
+			break;
+		case 9:
+			addstring(lookup(".interp", 0), freebsddynld);
+			break;
+		}
 
 		/*
 		 * hash table.
@@ -512,6 +520,7 @@ asmb(void)
 		break;
 
 	case 7:
+	case 9:
 		debug['8'] = 1;	/* 64-bit addresses */
 		v = rnd(HEADR+textsize, INITRND);
 		seek(cout, v, 0);
@@ -565,6 +574,7 @@ asmb(void)
 			symo = rnd(HEADR+textsize, INITRND)+rnd(datsize, INITRND)+machlink;
 			break;
 		case 7:
+		case 9:
 			symo = rnd(HEADR+textsize, INITRND)+datsize;
 			symo = rnd(symo, INITRND);
 			break;
@@ -649,6 +659,7 @@ asmb(void)
 		asmbmacho(symdatva, symo);
 		break;
 	case 7:
+	case 9:
 		/* elf amd-64 */
 
 		eh = getElfEhdr();
@@ -871,6 +882,8 @@ asmb(void)
 		eh->ident[EI_MAG1] = 'E';
 		eh->ident[EI_MAG2] = 'L';
 		eh->ident[EI_MAG3] = 'F';
+		if(HEADTYPE == 9)
+			eh->ident[EI_OSABI] = 9;
 		eh->ident[EI_CLASS] = ELFCLASS64;
 		eh->ident[EI_DATA] = ELFDATA2LSB;
 		eh->ident[EI_VERSION] = EV_CURRENT;

src/cmd/6l/obj.c

@@ -46,6 +46,7 @@ char*	paramspace	= "FP";
  *	-H5 -T0x80110000 -R4096		is ELF32
  *	-H6 -Tx -Rx			is apple MH-exec
  *	-H7 -Tx -Rx			is linux elf-exec
+ *      -H9 -Tx -Rx			is FreeBSD elf-exec
  *
  *	options used: 189BLQSWabcjlnpsvz
  */
@@ -149,6 +150,10 @@ main(int argc, char *argv[])
 		if(strcmp(goos, "darwin") == 0)
 			HEADTYPE = 6;
 		else
+		if(strcmp(goos, "freebsd") == 0) {
+			debug['d'] = 1;	/* no dynamic syms for now */
+			HEADTYPE = 9;
+		} else
 			print("goos is not known: %s\n", goos);
 	}
 
@@ -194,6 +199,7 @@ main(int argc, char *argv[])
 			INITDAT = 0;
 		break;
 	case 7:	/* elf64 executable */
+	case 9: /* freebsd */
 		elfinit();
 		HEADR = ELFRESERVE;
 		if(INITTEXT == -1)

src/cmd/cov/Makefile

@@ -24,6 +24,7 @@ clean:
 
 install: install-$(shell uname | tr A-Z a-z)
 install-linux: install-default
+install-freebsd: install-default
 
 # on Darwin, have to install and setgid; see $GOROOT/src/sudo.bash
 install-darwin: $(TARG)

src/cmd/prof/Makefile

@@ -24,6 +24,7 @@ clean:
 
 install: install-$(shell uname | tr A-Z a-z)
 install-linux: install-default
+install-freebsd: install-default
 
 # on Darwin, have to install and setgid; see $GOROOT/src/sudo.bash
 install-darwin: $(TARG)

src/libcgo/Makefile

@@ -16,6 +16,7 @@ CFLAGS_amd64=-m64
 
 LDFLAGS_linux=-shared -lpthread -lm
 LDFLAGS_darwin=-dynamiclib -Wl,-undefined,dynamic_lookup /usr/lib/libpthread.dylib
+LDFLAGS_freebsd=-pthread -shared -lm
 
 %.o: %.c
 	gcc $(CFLAGS_$(GOARCH)) -O2 -fPIC -o $@ -c $*.c

src/libcgo/freebsd_amd64.c

+// 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.
+
+#include <pthread.h>
+#include "libcgo.h"
+
+static void* threadentry(void*);
+
+void
+initcgo(void)
+{
+}
+
+void
+libcgo_sys_thread_start(ThreadStart *ts)
+{
+	pthread_attr_t attr;
+	pthread_t p;
+	size_t size;
+
+	pthread_attr_init(&attr);
+	pthread_attr_getstacksize(&attr, &size);
+	ts->g->stackguard = size;
+	pthread_create(&p, &attr, threadentry, ts);
+}
+
+static void*
+threadentry(void *v)
+{
+	ThreadStart ts;
+
+	ts = *(ThreadStart*)v;
+	free(v);
+
+	ts.g->stackbase = (uintptr)&ts;
+
+	/*
+	 * libcgo_sys_thread_start set stackguard to stack size;
+	 * change to actual guard pointer.
+	 */
+	ts.g->stackguard = (uintptr)&ts - ts.g->stackguard + 4096;
+
+	crosscall_amd64(ts.m, ts.g, ts.fn);
+	return nil;
+}

src/libmach/freebsd.c

+// This is stubbed out for the moment. Will revisit when the time comes.
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <mach.h>
+
+int
+ctlproc(int pid, char *msg)
+{
+	sysfatal("ctlproc unimplemented in FreeBSD");
+}
+
+char*
+proctextfile(int pid)
+{
+	sysfatal("proctextfile unimplemented in FreeBSD");
+}
+
+char*
+procstatus(int pid)
+{
+	sysfatal("procstatus unimplemented in FreeBSD");
+}
+
+Map*
+attachproc(int pid, Fhdr *fp)
+{
+	sysfatal("attachproc unimplemented in FreeBSD");
+}
+
+void
+detachproc(Map *m)
+{
+	sysfatal("detachproc unimplemented in FreeBSD");
+}
+
+int
+procthreadpids(int pid, int *p, int np)
+{
+	sysfatal("procthreadpids unimplemented in FreeBSD");
+}

src/pkg/debug/proc/proc_freebsd.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 proc
+
+import "os"
+
+// Process tracing is not supported on FreeBSD yet.
+
+func Attach(pid int) (Process, os.Error) {
+	return nil, os.NewError("debug/proc not implemented on FreeBSD")
+}
+
+func ForkExec(argv0 string, argv []string, envv []string, dir string, fd []*os.File) (Process, os.Error) {
+	return Attach(0)
+}

src/pkg/debug/proc/regs_freebsd_amd64.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 proc

src/pkg/net/fd_freebsd.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.
+
+// Waiting for FDs via kqueue/kevent.
+
+package net
+
+import (
+	"os";
+	"syscall";
+)
+
+type pollster struct {
+	kq		int;
+	eventbuf	[10]syscall.Kevent_t;
+	events		[]syscall.Kevent_t;
+}
+
+func newpollster() (p *pollster, err os.Error) {
+	p = new(pollster);
+	var e int;
+	if p.kq, e = syscall.Kqueue(); e != 0 {
+		return nil, os.NewSyscallError("kqueue", e)
+	}
+	p.events = p.eventbuf[0:0];
+	return p, nil;
+}
+
+func (p *pollster) AddFD(fd int, mode int, repeat bool) os.Error {
+	var kmode int;
+	if mode == 'r' {
+		kmode = syscall.EVFILT_READ
+	} else {
+		kmode = syscall.EVFILT_WRITE
+	}
+	var events [1]syscall.Kevent_t;
+	ev := &events[0];
+	// EV_ADD - add event to kqueue list
+	// EV_ONESHOT - delete the event the first time it triggers
+	flags := syscall.EV_ADD;
+	if !repeat {
+		flags |= syscall.EV_ONESHOT
+	}
+	syscall.SetKevent(ev, fd, kmode, flags);
+
+	n, e := syscall.Kevent(p.kq, &events, nil, nil);
+	if e != 0 {
+		return os.NewSyscallError("kevent", e)
+	}
+	if n != 1 || (ev.Flags&syscall.EV_ERROR) == 0 || int(ev.Ident) != fd || int(ev.Filter) != kmode {
+		return os.NewSyscallError("kqueue phase error", e)
+	}
+	if ev.Data != 0 {
+		return os.Errno(int(ev.Data))
+	}
+	return nil;
+}
+
+func (p *pollster) DelFD(fd int, mode int) {
+	var kmode int;
+	if mode == 'r' {
+		kmode = syscall.EVFILT_READ
+	} else {
+		kmode = syscall.EVFILT_WRITE
+	}
+	var events [1]syscall.Kevent_t;
+	ev := &events[0];
+	// EV_DELETE - delete event from kqueue list
+	syscall.SetKevent(ev, fd, kmode, syscall.EV_DELETE);
+	syscall.Kevent(p.kq, &events, nil, nil);
+}
+
+func (p *pollster) WaitFD(nsec int64) (fd int, mode int, err os.Error) {
+	var t *syscall.Timespec;
+	for len(p.events) == 0 {
+		if nsec > 0 {
+			if t == nil {
+				t = new(syscall.Timespec)
+			}
+			*t = syscall.NsecToTimespec(nsec);
+		}
+		nn, e := syscall.Kevent(p.kq, nil, &p.eventbuf, t);
+		if e != 0 {
+			if e == syscall.EINTR {
+				continue
+			}
+			return -1, 0, os.NewSyscallError("kevent", e);
+		}
+		if nn == 0 {
+			return -1, 0, nil
+		}
+		p.events = p.eventbuf[0:nn];
+	}
+	ev := &p.events[0];
+	p.events = p.events[1:len(p.events)];
+	fd = int(ev.Ident);
+	if ev.Filter == syscall.EVFILT_READ {
+		mode = 'r'
+	} else {
+		mode = 'w'
+	}
+	return fd, mode, nil;
+}
+
+func (p *pollster) Close() os.Error	{ return os.NewSyscallError("close", syscall.Close(p.kq)) }

src/pkg/net/ipsock.go

@@ -18,6 +18,10 @@ import (
 // Unfortunately, we need to run on kernels built without IPv6 support too.
 // So probe the kernel to figure it out.
 func kernelSupportsIPv6() bool {
+	// FreeBSD does not support this sort of interface.
+	if syscall.OS == "freebsd" {
+		return false
+	}
 	fd, e := syscall.Socket(syscall.AF_INET6, syscall.SOCK_STREAM, syscall.IPPROTO_TCP);
 	if fd >= 0 {
 		syscall.Close(fd)

src/pkg/os/dir_freebsd.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 os
+
+import (
+	"syscall";
+	"unsafe";
+)
+
+const (
+	blockSize = 4096;	// TODO(r): use statfs
+)
+
+func (file *File) Readdirnames(count int) (names []string, err Error) {
+	// If this file has no dirinfo, create one.
+	if file.dirinfo == nil {
+		file.dirinfo = new(dirInfo);
+		// The buffer must be at least a block long.
+		// TODO(r): use fstatfs to find fs block size.
+		file.dirinfo.buf = make([]byte, blockSize);
+	}
+	d := file.dirinfo;
+	size := count;
+	if size < 0 {
+		size = 100
+	}
+	names = make([]string, 0, size);	// Empty with room to grow.
+	for count != 0 {
+		// Refill the buffer if necessary
+		if d.bufp >= d.nbuf {
+			var errno int;
+			d.bufp = 0;
+			// Final argument is (basep *uintptr) and the syscall doesn't take nil.
+			d.nbuf, errno = syscall.Getdirentries(file.fd, d.buf, new(uintptr));
+			if errno != 0 {
+				d.nbuf = 0;
+				return names, NewSyscallError("getdirentries", errno);
+			}
+			if d.nbuf <= 0 {
+				break	// EOF
+			}
+		}
+		// Drain the buffer
+		for count != 0 && d.bufp < d.nbuf {
+			dirent := (*syscall.Dirent)(unsafe.Pointer(&d.buf[d.bufp]));
+			if dirent.Reclen == 0 {
+				d.bufp = d.nbuf;
+				break;
+			}
+			d.bufp += int(dirent.Reclen);
+			if dirent.Fileno == 0 {	// File absent in directory.
+				continue
+			}
+			bytes := (*[len(dirent.Name)]byte)(unsafe.Pointer(&dirent.Name[0]));
+			var name = string(bytes[0:dirent.Namlen]);
+			if name == "." || name == ".." {	// Useless names
+				continue
+			}
+			count--;
+			if len(names) == cap(names) {
+				nnames := make([]string, len(names), 2*len(names));
+				for i := 0; i < len(names); i++ {
+					nnames[i] = names[i]
+				}
+				names = nnames;
+			}
+			names = names[0 : len(names)+1];
+			names[len(names)-1] = name;
+		}
+	}
+	return names, nil;
+}

src/pkg/os/stat_freebsd.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 os
+
+import "syscall"
+
+func isSymlink(stat *syscall.Stat_t) bool {
+	return stat.Mode&syscall.S_IFMT == syscall.S_IFLNK
+}
+
+func dirFromStat(name string, dir *Dir, lstat, stat *syscall.Stat_t) *Dir {
+	dir.Dev = uint64(stat.Dev);
+	dir.Ino = uint64(stat.Ino);
+	dir.Nlink = uint64(stat.Nlink);
+	dir.Mode = uint32(stat.Mode);
+	dir.Uid = stat.Uid;
+	dir.Gid = stat.Gid;
+	dir.Rdev = uint64(stat.Rdev);
+	dir.Size = uint64(stat.Size);
+	dir.Blksize = uint64(stat.Blksize);
+	dir.Blocks = uint64(stat.Blocks);
+	dir.Atime_ns = uint64(syscall.TimespecToNsec(stat.Atimespec));
+	dir.Mtime_ns = uint64(syscall.TimespecToNsec(stat.Mtimespec));
+	dir.Ctime_ns = uint64(syscall.TimespecToNsec(stat.Ctimespec));
+	for i := len(name) - 1; i >= 0; i-- {
+		if name[i] == '/' {
+			name = name[i+1 : len(name)];
+			break;
+		}
+	}
+	dir.Name = name;
+	if isSymlink(lstat) && !isSymlink(stat) {
+		dir.FollowedSymlink = true
+	}
+	return dir;
+}

src/pkg/os/sys_freebsd.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 os
+
+import "syscall"
+
+func Hostname() (name string, err Error) {
+	var errno int;
+	name, errno = syscall.Sysctl("kern.hostname");
+	if errno != 0 {
+		return "", NewSyscallError("sysctl kern.hostname", errno)
+	}
+	return name, nil;
+}

src/pkg/runtime/amd64/asm.s

@@ -5,10 +5,9 @@
 #include "amd64/asm.h"
 
 TEXT	_rt0_amd64(SB),7,$-8
-
 	// copy arguments forward on an even stack
-	MOVQ	0(SP), AX		// argc
-	LEAQ	8(SP), BX		// argv
+	MOVQ	0(DI), AX		// argc
+	LEAQ	8(DI), BX		// argv
 	SUBQ	$(4*8+7), SP		// 2args 2auto
 	ANDQ	$~7, SP
 	MOVQ	AX, 16(SP)

src/pkg/runtime/darwin/amd64/rt0.s

@@ -6,4 +6,5 @@
 
 TEXT	_rt0_amd64_darwin(SB),7,$-8
 	MOVQ	$_rt0_amd64(SB), AX
+	MOVQ	SP, DI
 	JMP	AX

src/pkg/runtime/freebsd/amd64/defs.h

+// godefs -f -m64 freebsd/defs.c
+
+// MACHINE GENERATED - DO NOT EDIT.
+
+// Constants
+enum {
+	PROT_NONE = 0,
+	PROT_READ = 0x1,
+	PROT_WRITE = 0x2,
+	PROT_EXEC = 0x4,
+	MAP_ANON = 0x1000,
+	MAP_PRIVATE = 0x2,
+	SA_SIGINFO = 0x40,
+	SA_RESTART = 0x2,
+	SA_ONSTACK = 0x1,
+	UMTX_OP_WAIT = 0x2,
+	UMTX_OP_WAKE = 0x3,
+	EINTR = 0x4,
+};
+
+// Types
+#pragma pack on
+
+typedef struct Sigaltstack Sigaltstack;
+struct Sigaltstack {
+	int8 *ss_sp;
+	uint64 ss_size;
+	int32 ss_flags;
+	byte pad0[4];
+};
+
+typedef struct Sigset Sigset;
+struct Sigset {
+	uint32 __bits[4];
+};
+
+typedef union Sigval Sigval;
+union Sigval {
+	int32 sival_int;
+	void *sival_ptr;
+	int32 sigval_int;
+	void *sigval_ptr;
+};
+
+typedef struct StackT StackT;
+struct StackT {
+	int8 *ss_sp;
+	uint64 ss_size;
+	int32 ss_flags;
+	byte pad0[4];
+};
+
+typedef struct Siginfo Siginfo;
+struct Siginfo {
+	int32 si_signo;
+	int32 si_errno;
+	int32 si_code;
+	int32 si_pid;
+	uint32 si_uid;
+	int32 si_status;
+	void *si_addr;
+	Sigval si_value;
+	byte _reason[40];
+};
+
+typedef struct Mcontext Mcontext;
+struct Mcontext {
+	int64 mc_onstack;
+	int64 mc_rdi;
+	int64 mc_rsi;
+	int64 mc_rdx;
+	int64 mc_rcx;
+	int64 mc_r8;
+	int64 mc_r9;
+	int64 mc_rax;
+	int64 mc_rbx;
+	int64 mc_rbp;
+	int64 mc_r10;
+	int64 mc_r11;
+	int64 mc_r12;
+	int64 mc_r13;
+	int64 mc_r14;
+	int64 mc_r15;
+	uint32 mc_trapno;
+	uint16 mc_fs;
+	uint16 mc_gs;
+	int64 mc_addr;
+	uint32 mc_flags;
+	uint16 mc_es;
+	uint16 mc_ds;
+	int64 mc_err;
+	int64 mc_rip;
+	int64 mc_cs;
+	int64 mc_rflags;
+	int64 mc_rsp;
+	int64 mc_ss;
+	int64 mc_len;
+	int64 mc_fpformat;
+	int64 mc_ownedfp;
+	int64 mc_fpstate[64];
+	int64 mc_fsbase;
+	int64 mc_gsbase;
+	int64 mc_spare[6];
+};
+
+typedef struct Ucontext Ucontext;
+struct Ucontext {
+	Sigset uc_sigmask;
+	Mcontext uc_mcontext;
+	Ucontext *uc_link;
+	StackT uc_stack;
+	int32 uc_flags;
+	int32 __spare__[4];
+	byte pad0[12];
+};
+
+typedef struct Sigcontext Sigcontext;
+struct Sigcontext {
+	Sigset sc_mask;
+	int64 sc_onstack;
+	int64 sc_rdi;
+	int64 sc_rsi;
+	int64 sc_rdx;
+	int64 sc_rcx;
+	int64 sc_r8;
+	int64 sc_r9;
+	int64 sc_rax;
+	int64 sc_rbx;
+	int64 sc_rbp;
+	int64 sc_r10;
+	int64 sc_r11;
+	int64 sc_r12;
+	int64 sc_r13;
+	int64 sc_r14;
+	int64 sc_r15;
+	int32 sc_trapno;
+	int16 sc_fs;
+	int16 sc_gs;
+	int64 sc_addr;
+	int32 sc_flags;
+	int16 sc_es;
+	int16 sc_ds;
+	int64 sc_err;
+	int64 sc_rip;
+	int64 sc_cs;
+	int64 sc_rflags;
+	int64 sc_rsp;
+	int64 sc_ss;
+	int64 sc_len;
+	int64 sc_fpformat;
+	int64 sc_ownedfp;
+	int64 sc_fpstate[64];
+	int64 sc_fsbase;
+	int64 sc_gsbase;
+	int64 sc_spare[6];
+};
+#pragma pack off

src/pkg/runtime/freebsd/amd64/rt0.s

+// 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.
+
+// Darwin and Linux use the same linkage to main
+
+TEXT	_rt0_amd64_freebsd(SB),7,$-8
+	MOVQ	$_rt0_amd64(SB), DX
+	JMP	DX

src/pkg/runtime/freebsd/amd64/signal.c

+#include "runtime.h"
+#include "defs.h"
+#include "signals.h"
+#include "os.h"
+
+extern void sigtramp(void);
+
+typedef struct sigaction {
+	union {
+		void    (*__sa_handler)(int32);
+		void    (*__sa_sigaction)(int32, Siginfo*, void *);
+	} __sigaction_u;		/* signal handler */
+	int32	sa_flags;		/* see signal options below */
+	int64	sa_mask;		/* signal mask to apply */
+} Sigaction;
+
+void
+dumpregs(Sigcontext *r)
+{
+	printf("rax     %X\n", r->sc_rax);
+	printf("rbx     %X\n", r->sc_rbx);
+	printf("rcx     %X\n", r->sc_rcx);
+	printf("rdx     %X\n", r->sc_rdx);
+	printf("rdi     %X\n", r->sc_rdi);
+	printf("rsi     %X\n", r->sc_rsi);
+	printf("rbp     %X\n", r->sc_rbp);
+	printf("rsp     %X\n", r->sc_rsp);
+	printf("r8      %X\n", r->sc_r8 );
+	printf("r9      %X\n", r->sc_r9 );
+	printf("r10     %X\n", r->sc_r10);
+	printf("r11     %X\n", r->sc_r11);
+	printf("r12     %X\n", r->sc_r12);
+	printf("r13     %X\n", r->sc_r13);
+	printf("r14     %X\n", r->sc_r14);
+	printf("r15     %X\n", r->sc_r15);
+	printf("rip     %X\n", r->sc_rip);
+	printf("rflags  %X\n", r->sc_flags);
+	printf("cs      %X\n", (uint64)r->sc_cs);
+	printf("fs      %X\n", (uint64)r->sc_fsbase);
+	printf("gs      %X\n", (uint64)r->sc_gsbase);
+}
+
+void
+sighandler(int32 sig, Siginfo* info, void* context)
+{
+	Ucontext *uc;
+	Mcontext *mc;
+	Sigcontext *sc;
+
+	if(panicking)	// traceback already printed
+		exit(2);
+	panicking = 1;
+
+	uc = context;
+	mc = &uc->uc_mcontext;
+	sc = (Sigcontext*)mc;	// same layout, more conveient names
+
+	if(sig < 0 || sig >= NSIG)
+		printf("Signal %d\n", sig);
+	else
+		printf("%s\n", sigtab[sig].name);
+
+	printf("Faulting address: %p\n", info->si_addr);
+	printf("PC=%X\n", sc->sc_rip);
+	printf("\n");
+
+	if(gotraceback()){
+		traceback((void*)sc->sc_rip, (void*)sc->sc_rsp, (void*)sc->sc_r15);
+		tracebackothers((void*)sc->sc_r15);
+		dumpregs(sc);
+	}
+
+	breakpoint();
+	exit(2);
+}
+
+void
+sigignore(void)
+{
+}
+
+void
+signalstack(byte *p, int32 n)
+{
+	Sigaltstack st;
+
+	st.ss_sp = (int8*)p;
+	st.ss_size = n;
+	st.ss_flags = 0;
+	sigaltstack(&st, nil);
+}
+
+void
+initsig(void)
+{
+	static Sigaction sa;
+
+	int32 i;
+	sa.sa_flags |= SA_ONSTACK | SA_SIGINFO;
+	sa.sa_mask = ~0x0ull;
+	
+	for(i = 0; i < NSIG; i++) {
+		if(sigtab[i].flags) {
+			if(sigtab[i].flags & SigCatch)
+				sa.__sigaction_u.__sa_handler = (void*) sigtramp;
+			else
+				sa.__sigaction_u.__sa_handler = (void*) sigignore;
+
+			if(sigtab[i].flags & SigRestart)
+				sa.sa_flags |= SA_RESTART;
+			else
+				sa.sa_flags &= ~SA_RESTART;
+
+			sigaction(i, &sa, nil);
+		}
+	}
+}

src/pkg/runtime/freebsd/amd64/sys.s

+// 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 calls and other sys.stuff for AMD64, FreeBSD
+// /usr/src/sys/kern/syscalls.master for syscall numbers.
+//
+
+#include "amd64/asm.h"
+	
+TEXT sys_umtx_op(SB),7,$0
+	MOVQ 8(SP), DI
+	MOVL 16(SP), SI
+	MOVL 20(SP), DX
+	MOVQ 24(SP), R10
+	MOVQ 32(SP), R8
+	MOVL $454, AX
+	SYSCALL
+	RET
+
+TEXT thr_new(SB),7,$0
+	MOVQ 8(SP), DI
+	MOVQ 16(SP), SI
+	MOVL $455, AX
+	SYSCALL
+	RET
+
+TEXT thr_start(SB),7,$0
+	MOVQ DI, m
+	MOVQ m_g0(m), g
+	CALL mstart(SB)
+	MOVQ 0, AX			// crash (not reached)
+
+
+// Exit the entire program (like C exit)
+TEXT	exit(SB),7,$-8
+	MOVL	8(SP), DI		// arg 1 exit status
+	MOVL	$1, AX
+	SYSCALL
+	CALL	notok(SB)
+	RET
+
+TEXT	exit1(SB),7,$-8
+	MOVQ	8(SP), DI		// arg 1 exit status
+	MOVL	$431, AX
+	SYSCALL
+	CALL	notok(SB)
+	RET
+
+TEXT	write(SB),7,$-8
+	MOVL	8(SP), DI		// arg 1 fd
+	MOVQ	16(SP), SI		// arg 2 buf
+	MOVL	24(SP), DX		// arg 3 count
+	MOVL	$4, AX
+	SYSCALL
+	JCC	2(PC)
+	CALL	notok(SB)
+	RET
+
+TEXT	sigaction(SB),7,$-8
+	MOVL	8(SP), DI		// arg 1 sig
+	MOVQ	16(SP), SI		// arg 2 act
+	MOVQ	24(SP), DX		// arg 3 oact
+	MOVL	$416, AX
+	SYSCALL
+	JCC	2(PC)
+	CALL	notok(SB)
+	RET
+
+TEXT	sigtramp(SB),7,$24-16
+	MOVQ	m_gsignal(m), g
+	MOVQ	DI, 0(SP)
+	MOVQ	SI, 8(SP)
+	MOVQ	DX, 16(SP)
+	CALL	sighandler(SB)
+	RET
+
+TEXT	runtime·mmap(SB),7,$-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	$477, AX
+	SYSCALL
+	JCC	2(PC)
+	CALL	notok(SB)
+	RET
+
+TEXT	notok(SB),7,$-8
+	MOVL	$0xf1, BP
+	MOVQ	BP, (BP)
+	RET
+
+TEXT	runtime·memclr(SB),7,$-8
+	MOVQ	8(SP), DI		// arg 1 addr
+	MOVL	16(SP), CX		// arg 2 count
+	ADDL	$7, CX
+	SHRL	$3, CX
+	MOVQ	$0, AX
+	CLD
+	REP
+	STOSQ
+	RET
+
+TEXT	runtime·getcallerpc+0(SB),7,$0
+	MOVQ	x+0(FP),AX		// addr of first arg
+	MOVQ	-8(AX),AX		// get calling pc
+	RET
+
+TEXT	runtime·setcallerpc+0(SB),7,$0
+	MOVQ	x+0(FP),AX		// addr of first arg
+	MOVQ	x+8(FP), BX
+	MOVQ	BX, -8(AX)		// set calling pc
+	RET
+
+TEXT sigaltstack(SB),7,$-8
+	MOVQ	new+8(SP), DI
+	MOVQ	old+16(SP), SI
+	MOVQ	$53, AX
+	SYSCALL
+	JCC	2(PC)
+	CALL	notok(SB)
+	RET

src/pkg/runtime/freebsd/defs.c

+// 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.
+
+/*
+ * Input to godefs.
+ *
+	godefs -f -m64 defs.c >amd64/defs.h
+	godefs defs.c >386/defs.h
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <signal.h>
+#include <errno.h>
+#include <sys/mman.h>
+#include <sys/ucontext.h>
+#include <sys/umtx.h>
+#include <sys/_sigset.h>
+
+enum {
+	$PROT_NONE = PROT_NONE,
+	$PROT_READ = PROT_READ,
+	$PROT_WRITE = PROT_WRITE,
+	$PROT_EXEC = PROT_EXEC,
+
+	$MAP_ANON = MAP_ANON,
+	$MAP_PRIVATE = MAP_PRIVATE,
+
+	$SA_SIGINFO = SA_SIGINFO,
+	$SA_RESTART = SA_RESTART,
+	$SA_ONSTACK = SA_ONSTACK,
+
+	$UMTX_OP_WAIT = UMTX_OP_WAIT,
+	$UMTX_OP_WAKE = UMTX_OP_WAKE,
+
+	$EINTR = EINTR,
+};
+
+typedef struct sigaltstack $Sigaltstack;
+typedef struct __sigset $Sigset;
+typedef union sigval $Sigval;
+typedef stack_t	$StackT;
+
+typedef siginfo_t $Siginfo;
+
+typedef mcontext_t $Mcontext;
+typedef ucontext_t $Ucontext;
+typedef struct sigcontext $Sigcontext;

src/pkg/runtime/freebsd/os.h

+// FreeBSD-specific system calls
+int32 ksem_init(uint64 *, uint32);
+int32 ksem_wait(uint32);
+int32 ksem_destroy(uint32);
+int32 ksem_post(uint32);
+
+struct thr_param {
+    void	(*start_func)(void *);	/* thread entry function. */
+    void	*arg;			/* argument for entry function. */
+    byte	*stack_base;		/* stack base address. */
+    int64	stack_size;		/* stack size. */
+    byte	*tls_base;		/* tls base address. */
+    int64	tls_size;		/* tls size. */
+    int64	*child_tid;		/* address to store new TID. */
+    int64	*parent_tid;		/* parent accesses the new TID here. */
+    int32		flags;			/* thread flags. */
+    void	*spare[4];		/* TODO: cpu affinity mask etc. */
+};
+int32 thr_new(struct thr_param*, uint64);

src/pkg/runtime/freebsd/signals.h

+// 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.
+
+#define C SigCatch
+#define I SigIgnore
+#define R SigRestart
+
+static SigTab sigtab[] = {
+	/* 0 */		0, "SIGNONE: no trap",
+	/* 1 */		0, "SIGHUP: terminal line hangup",
+	/* 2 */		0, "SIGINT: interrupt",
+	/* 3 */		C, "SIGQUIT: quit",
+	/* 4 */		C, "SIGILL: illegal instruction",
+	/* 5 */		C, "SIGTRAP: trace trap",
+	/* 6 */		C, "SIGABRT: abort",
+	/* 7 */		C, "SIGEMT: EMT instruction",
+	/* 8 */		C, "SIGFPE: floating-point exception",
+	/* 9 */		0, "SIGKILL: kill",
+	/* 10 */	C, "SIGBUS: bus error",
+	/* 11 */	C, "SIGSEGV: segmentation violation",
+	/* 12 */	C, "SIGSYS: bad system call",
+	/* 13 */	I, "SIGPIPE: write to broken pipe",
+	/* 14 */	0, "SIGALRM: alarm clock",
+	/* 15 */	0, "SIGTERM: termination",
+	/* 16 */	0, "SIGURG: urgent condition on socket",
+	/* 17 */	0, "SIGSTOP: stop, unblockable",
+	/* 18 */	0, "SIGTSTP: stop from tty",
+	/* 19 */	0, "SIGCONT: continue",
+	/* 20 */	I+R, "SIGCHLD: child status has changed",
+	/* 21 */	0, "SIGTTIN: background read from tty",
+	/* 22 */	0, "SIGTTOU: background write to tty",
+	/* 23 */	0, "SIGIO: i/o now possible",
+	/* 24 */	0, "SIGXCPU: cpu limit exceeded",
+	/* 25 */	0, "SIGXFSZ: file size limit exceeded",
+	/* 26 */	0, "SIGVTALRM: virtual alarm clock",
+	/* 27 */	0, "SIGPROF: profiling alarm clock",
+	/* 28 */	I+R, "SIGWINCH: window size change",
+	/* 29 */	0, "SIGINFO: information request",
+	/* 30 */	0, "SIGUSR1: user-defined signal 1",
+	/* 31 */	0, "SIGUSR2: user-defined signal 2",
+	/* 32 */	0, "SIGTHR: reserved",
+};
+#undef C
+#undef I
+#undef R
+
+#define	NSIG 33

src/pkg/runtime/freebsd/thread.c

+// Use of this source file is governed by a BSD-style
+// license that can be found in the LICENSE file.`
+
+#include "runtime.h"
+#include "defs.h"
+#include "signals.h"
+#include "os.h"
+
+// FreeBSD's umtx_op syscall is effectively the same as Linux's futex, and
+// thus the code is largely similar. See linux/thread.c for comments.
+
+static void
+umtx_wait(uint32 *addr, uint32 val)
+{
+	int32 ret;
+
+	ret = sys_umtx_op(addr, UMTX_OP_WAIT, val, nil, nil);
+	if(ret >= 0 || ret == -EINTR)
+		return;
+
+	printf("umtx_wait addr=%p val=%d ret=%d\n", addr, val, ret);
+	*(int32*)0x1005 = 0x1005;
+}
+
+static void
+umtx_wake(uint32 *addr)
+{
+	int32 ret;
+
+	ret = sys_umtx_op(addr, UMTX_OP_WAKE, 1, nil, nil);
+	if(ret >= 0)
+		return;
+
+	printf("umtx_wake addr=%p ret=%d\n", addr, ret);
+	*(int32*)0x1006 = 0x1006;
+}
+
+// See linux/thread.c for comments about the algorithm.
+static void
+umtx_lock(Lock *l)
+{
+	uint32 v;
+
+again:
+	v = l->key;
+	if((v&1) == 0){
+		if(cas(&l->key, v, v|1))
+			return;
+		goto again;
+	}
+
+	if(!cas(&l->key, v, v+2))
+		goto again;
+
+	umtx_wait(&l->key, v+2);
+
+	for(;;){
+		v = l->key;
+		if(v < 2)
+			throw("bad lock key");
+		if(cas(&l->key, v, v-2))
+			break;
+	}
+
+	goto again;
+}
+
+static void
+umtx_unlock(Lock *l)
+{
+	uint32 v;
+
+again:
+	v = l->key;
+	if((v&1) == 0)
+		throw("unlock of unlocked lock");
+	if(!cas(&l->key, v, v&~1))
+		goto again;
+
+	if(v&~1)
+		umtx_wake(&l->key);
+}
+
+void
+lock(Lock *l)
+{
+	if(m->locks < 0)
+		throw("lock count");
+	m->locks++;
+	umtx_lock(l);
+}
+
+void 
+unlock(Lock *l)
+{
+	m->locks--;
+	if(m->locks < 0)
+		throw("lock count");
+	umtx_unlock(l);
+}
+
+// Event notifications.
+void
+noteclear(Note *n)
+{
+	n->lock.key = 0;
+	umtx_lock(&n->lock);
+}
+
+void
+notesleep(Note *n)
+{
+	umtx_lock(&n->lock);
+	umtx_unlock(&n->lock);
+}
+
+void
+notewakeup(Note *n)
+{
+	umtx_unlock(&n->lock);
+}
+
+void thr_start(void*);
+
+void
+newosproc(M *m, G *g, void *stk, void (*fn)(void))
+{
+	struct thr_param param;
+
+	USED(fn);	// thr_start assumes fn == mstart
+	USED(g);	// thr_start assumes g == m->g0
+
+	if(0){
+		printf("newosproc stk=%p m=%p g=%p fn=%p id=%d/%d ostk=%p\n",
+			stk, m, g, fn, m->id, m->tls[0], &m);
+	}
+
+	runtime_memclr((byte*)&param, sizeof param);
+
+	param.start_func = thr_start;
+	param.arg = m;
+	param.stack_base = stk;
+	param.stack_size = g->stackbase - g->stackguard + 256;
+	param.child_tid = (int64*)&m->procid;
+	param.parent_tid = nil;
+
+	thr_new(&param, sizeof param);
+}
+
+void
+osinit(void)
+{
+}
+
+// Called to initialize a new m (including the bootstrap m).
+void
+minit(void)
+{
+	// Initialize signal handling
+	m->gsignal = malg(32*1024);
+	signalstack(m->gsignal->stackguard, 32*1024);
+}

src/pkg/runtime/linux/amd64/rt0.s

@@ -11,6 +11,7 @@ TEXT	_rt0_amd64_linux(SB),7,$-8
 	CALL	AX
 
 	MOVQ	$_rt0_amd64(SB), AX
+	MOVQ	SP, DI
 	JMP	AX
 
 GLOBL initcgo(SB), $8

src/pkg/syscall/asm_freebsd_amd64.s

+// 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 call support for AMD64, FreeBSD
+//
+
+// func Syscall(trap int64, a1, a2, a3 int64) (r1, r2, err int64);
+// func Syscall6(trap int64, a1, a2, a3, a4, a5, a6 int64) (r1, r2, err int64);
+// Trap # in AX, args in DI SI DX, return in AX DX
+
+TEXT	syscall·Syscall(SB),7,$0
+	CALL	runtime·entersyscall(SB)
+	MOVQ	16(SP), DI
+	MOVQ	24(SP), SI
+	MOVQ	32(SP), DX
+	MOVQ	$0, R10
+	MOVQ	$0, R8
+	MOVQ	$0, R9
+	MOVQ	8(SP), AX	// syscall entry
+	SYSCALL
+	JCC	ok
+	MOVQ	$-1, 40(SP)	// r1
+	MOVQ	$0, 48(SP)	// r2
+	MOVQ	AX, 56(SP)  // errno
+	CALL	runtime·exitsyscall(SB)
+	RET
+ok:
+	MOVQ	AX, 40(SP)	// r1
+	MOVQ	DX, 48(SP)	// r2
+	MOVQ	$0, 56(SP)	// errno
+	CALL	runtime·exitsyscall(SB)
+	RET
+
+TEXT	syscall·Syscall6(SB),7,$0
+	CALL	runtime·entersyscall(SB)
+	MOVQ	16(SP), DI
+	MOVQ	24(SP), SI
+	MOVQ	32(SP), DX
+	MOVQ	40(SP), R10
+	MOVQ	48(SP), R8
+	MOVQ	56(SP), R9
+	MOVQ	8(SP), AX	// syscall entry
+	SYSCALL
+	JCC	ok6
+	MOVQ	$-1, 64(SP)	// r1
+	MOVQ	$0, 72(SP)	// r2
+	MOVQ	AX, 80(SP)  // errno
+	CALL	runtime·exitsyscall(SB)
+	RET
+ok6:
+	MOVQ	AX, 64(SP)	// r1
+	MOVQ	DX, 72(SP)	// r2
+	MOVQ	$0, 80(SP)	// errno
+	CALL	runtime·exitsyscall(SB)
+	RET
+
+TEXT syscall·RawSyscall(SB),7,$0
+	MOVQ	16(SP), DI
+	MOVQ	24(SP), SI
+	MOVQ	32(SP), DX
+	MOVQ	$0, R10
+	MOVQ	$0, R8
+	MOVQ	$0, R9
+	MOVQ	8(SP), AX	// syscall entry
+	SYSCALL
+	JCC	ok1
+	MOVQ	$-1, 40(SP)	// r1
+	MOVQ	$0, 48(SP)	// r2
+	MOVQ	AX, 56(SP)  // errno
+	RET
+ok1:
+	MOVQ	AX, 40(SP)	// r1
+	MOVQ	DX, 48(SP)	// r2
+	MOVQ	$0, 56(SP)	// errno
+	RET

src/pkg/syscall/mksysnum_freebsd.sh

+#!/usr/bin/perl
+# 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.
+#
+# Generate system call table for FreeBSD from master list
+# (for example, /usr/src/sys/kern/syscalls.master).
+
+my $command = "mksysnum_freebsd.sh " . join(' ', @ARGV);
+
+print <<EOF;
+// $command
+// MACHINE GENERATED BY THE ABOVE COMMAND; DO NOT EDIT
+
+package syscall
+
+const (
+EOF
+
+while(<>){
+	if(/^([0-9]+)\s+\S+\s+STD\s+({ \S+\s+(\w+).*)$/){
+		my $num = $1;
+		my $proto = $2;
+		my $name = "SYS_$3";
+		$name =~ y/a-z/A-Z/;
+
+		# There are multiple entries for enosys and nosys, so comment them out.
+		if($name =~ /^SYS_E?NOSYS$/){
+			$name = "// $name";
+		}
+		if($name eq 'SYS_SYS_EXIT'){
+			$name = 'SYS_EXIT';
+		}
+
+		print "	$name = $num;  // $proto\n";
+	}
+}
+
+print <<EOF;
+)
+EOF

src/pkg/syscall/syscall_freebsd_amd64.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 Getpagesize() int	{ return 4096 }
+
+func TimespecToNsec(ts Timespec) int64	{ return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
+
+func NsecToTimespec(nsec int64) (ts Timespec) {
+	ts.Sec = nsec / 1e9;
+	ts.Nsec = nsec % 1e9;
+	return;
+}
+
+func TimevalToNsec(tv Timeval) int64	{ return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
+
+func NsecToTimeval(nsec int64) (tv Timeval) {
+	nsec += 999;	// round up to microsecond
+	tv.Usec = nsec % 1e9 / 1e3;
+	tv.Sec = int64(nsec / 1e9);
+	return;
+}
+
+func SetKevent(k *Kevent_t, fd, mode, flags int) {
+	k.Ident = uint64(fd);
+	k.Filter = int16(mode);
+	k.Flags = uint16(flags);
+}

src/pkg/syscall/types_freebsd.c

+// 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.
+
+/*
+Input to godefs.  See also mkerrors.sh and mkall.sh
+ */
+
+#define KERNEL
+#include <sys/cdefs.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <signal.h>
+#include <stdio.h>
+#include <sys/event.h>
+#include <sys/mman.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/ptrace.h>
+#include <sys/resource.h>
+#include <sys/select.h>
+#include <sys/signal.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/un.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+// Machine characteristics; for internal use.
+
+enum
+{
+	$sizeofPtr = sizeof(void*),
+	$sizeofShort = sizeof(short),
+	$sizeofInt = sizeof(int),
+	$sizeofLong = sizeof(long),
+	$sizeofLongLong = sizeof(long long),
+};
+
+
+// Basic types
+
+typedef short $_C_short;
+typedef int $_C_int;
+typedef long $_C_long;
+typedef long long $_C_long_long;
+
+// Time
+
+typedef struct timespec $Timespec;
+typedef struct timeval $Timeval;
+
+// Processes
+
+typedef struct rusage $Rusage;
+typedef struct rlimit $Rlimit;
+
+typedef gid_t $_Gid_t;
+
+// Files
+
+enum
+{
+	$O_CLOEXEC = 0,	// not supported
+};
+
+enum
+{	// Directory mode bits
+	$S_IFMT = S_IFMT,
+	$S_IFIFO = S_IFIFO,
+	$S_IFCHR = S_IFCHR,
+	$S_IFDIR = S_IFDIR,
+	$S_IFBLK = S_IFBLK,
+	$S_IFREG = S_IFREG,
+	$S_IFLNK = S_IFLNK,
+	$S_IFSOCK = S_IFSOCK,
+	$S_ISUID = S_ISUID,
+	$S_ISGID = S_ISGID,
+	$S_ISVTX = S_ISVTX,
+	$S_IRUSR = S_IRUSR,
+	$S_IWUSR = S_IWUSR,
+	$S_IXUSR = S_IXUSR,
+};
+
+typedef struct stat $Stat_t;
+typedef struct statfs $Statfs_t;
+typedef struct flock $Flock_t;
+
+typedef struct dirent $Dirent;
+
+// Wait status.
+
+// Sockets
+
+union sockaddr_all {
+	struct sockaddr s1;	// this one gets used for fields
+	struct sockaddr_in s2;	// these pad it out
+	struct sockaddr_in6 s3;
+	struct sockaddr_un s4;
+};
+
+struct sockaddr_any {
+	struct sockaddr addr;
+	char pad[sizeof(union sockaddr_all) - sizeof(struct sockaddr)];
+};
+
+typedef struct sockaddr_in $RawSockaddrInet4;
+typedef struct sockaddr_in6 $RawSockaddrInet6;
+typedef struct sockaddr_un $RawSockaddrUnix;
+typedef struct sockaddr $RawSockaddr;
+typedef struct sockaddr_any $RawSockaddrAny;
+typedef socklen_t $_Socklen;
+typedef struct linger $Linger;
+typedef struct iovec $Iovec;
+typedef struct msghdr $Msghdr;
+typedef struct cmsghdr $Cmsghdr;
+
+enum {
+	$SizeofSockaddrInet4 = sizeof(struct sockaddr_in),
+	$SizeofSockaddrInet6 = sizeof(struct sockaddr_in6),
+	$SizeofSockaddrAny = sizeof(struct sockaddr_any),
+	$SizeofSockaddrUnix = sizeof(struct sockaddr_un),
+	$SizeofLinger = sizeof(struct linger),
+	$SizeofMsghdr = sizeof(struct msghdr),
+	$SizeofCmsghdr = sizeof(struct cmsghdr),
+};
+
+// Ptrace requests
+enum {
+	$PTRACE_TRACEME = PT_TRACE_ME,
+	$PTRACE_CONT = PT_CONTINUE,
+	$PTRACE_KILL = PT_KILL,
+};
+
+
+// Events (kqueue, kevent)
+
+typedef struct kevent $Kevent_t;
+
+// Select
+
+typedef fd_set $FdSet;

src/pkg/syscall/ztypes_freebsd_amd64.go

+// godefs -gsyscall -f-m64 types_freebsd.c
+
+// MACHINE GENERATED - DO NOT EDIT.
+
+package syscall
+
+// Constants
+const (
+	sizeofPtr		= 0x8;
+	sizeofShort		= 0x2;
+	sizeofInt		= 0x4;
+	sizeofLong		= 0x8;
+	sizeofLongLong		= 0x8;
+	O_CLOEXEC		= 0;
+	S_IFMT			= 0xf000;
+	S_IFIFO			= 0x1000;
+	S_IFCHR			= 0x2000;
+	S_IFDIR			= 0x4000;
+	S_IFBLK			= 0x6000;
+	S_IFREG			= 0x8000;
+	S_IFLNK			= 0xa000;
+	S_IFSOCK		= 0xc000;
+	S_ISUID			= 0x800;
+	S_ISGID			= 0x400;
+	S_ISVTX			= 0x200;
+	S_IRUSR			= 0x100;
+	S_IWUSR			= 0x80;
+	S_IXUSR			= 0x40;
+	SizeofSockaddrInet4	= 0x10;
+	SizeofSockaddrInet6	= 0x1c;
+	SizeofSockaddrAny	= 0x6c;
+	SizeofSockaddrUnix	= 0x6a;
+	SizeofLinger		= 0x8;
+	SizeofMsghdr		= 0x30;
+	SizeofCmsghdr		= 0xc;
+	PTRACE_TRACEME		= 0;
+	PTRACE_CONT		= 0x7;
+	PTRACE_KILL		= 0x8;
+)
+
+// Types
+
+type _C_short int16
+
+type _C_int int32
+
+type _C_long int64
+
+type _C_long_long int64
+
+type Timespec struct {
+	Sec	int64;
+	Nsec	int64;
+}
+
+type Timeval struct {
+	Sec	int64;
+	Usec	int64;
+}
+
+type Rusage struct {
+	Utime		Timeval;
+	Stime		Timeval;
+	Maxrss		int64;
+	Ixrss		int64;
+	Idrss		int64;
+	Isrss		int64;
+	Minflt		int64;
+	Majflt		int64;
+	Nswap		int64;
+	Inblock		int64;
+	Oublock		int64;
+	Msgsnd		int64;
+	Msgrcv		int64;
+	Nsignals	int64;
+	Nvcsw		int64;
+	Nivcsw		int64;
+}
+
+type Rlimit struct {
+	Cur	int64;
+	Max	int64;
+}
+
+type _Gid_t uint32
+
+type Stat_t struct {
+	Dev		uint32;
+	Ino		uint32;
+	Mode		uint16;
+	Nlink		uint16;
+	Uid		uint32;
+	Gid		uint32;
+	Rdev		uint32;
+	Atimespec	Timespec;
+	Mtimespec	Timespec;
+	Ctimespec	Timespec;
+	Size		int64;
+	Blocks		int64;
+	Blksize		uint32;
+	Flags		uint32;
+	Gen		uint32;
+	Lspare		int32;
+	Birthtimespec	Timespec;
+	Pad0		uint8;
+	Pad1		uint8;
+}
+
+type Statfs_t struct {
+	Version		uint32;
+	Type		uint32;
+	Flags		uint64;
+	Bsize		uint64;
+	Iosize		uint64;
+	Blocks		uint64;
+	Bfree		uint64;
+	Bavail		int64;
+	Files		uint64;
+	Ffree		int64;
+	Syncwrites	uint64;
+	Asyncwrites	uint64;
+	Syncreads	uint64;
+	Asyncreads	uint64;
+	Spare		[10]uint64;
+	Namemax		uint32;
+	Owner		uint32;
+	Fsid		[8]byte;	/* fsid */
+	Charspare	[80]int8;
+	Fstypename	[16]int8;
+	Mntfromname	[88]int8;
+	Mntonname	[88]int8;
+}
+
+type Flock_t struct {
+	Start	int64;
+	Len	int64;
+	Pid	int32;
+	Type	int16;
+	Whence	int16;
+	Sysid	int32;
+	Pad0	[4]byte;
+}
+
+type Dirent struct {
+	Fileno	uint32;
+	Reclen	uint16;
+	Type	uint8;
+	Namlen	uint8;
+	Name	[256]int8;
+}
+
+type RawSockaddrInet4 struct {
+	Len	uint8;
+	Family	uint8;
+	Port	uint16;
+	Addr	[4]byte;	/* in_addr */
+	Zero	[8]int8;
+}
+
+type RawSockaddrInet6 struct {
+	Len		uint8;
+	Family		uint8;
+	Port		uint16;
+	Flowinfo	uint32;
+	Addr		[16]byte;	/* in6_addr */
+	Scope_id	uint32;
+}
+
+type RawSockaddrUnix struct {
+	Len	uint8;
+	Family	uint8;
+	Path	[104]int8;
+}
+
+type RawSockaddr struct {
+	Len	uint8;
+	Family	uint8;
+	Data	[14]int8;
+}
+
+type RawSockaddrAny struct {
+	Addr	RawSockaddr;
+	Pad	[92]int8;
+}
+
+type _Socklen uint32
+
+type Linger struct {
+	Onoff	int32;
+	Linger	int32;
+}
+
+type Iovec struct {
+	Base	*byte;
+	Len	uint64;
+}
+
+type Msghdr struct {
+	Name		*byte;
+	Namelen		uint32;
+	Pad0		[4]byte;
+	Iov		*Iovec;
+	Iovlen		int32;
+	Pad1		[4]byte;
+	Control		*byte;
+	Controllen	uint32;
+	Flags		int32;
+}
+
+type Cmsghdr struct {
+	Len	uint32;
+	Level	int32;
+	Type	int32;
+}
+
+type Kevent_t struct {
+	Ident	uint64;
+	Filter	int16;
+	Flags	uint16;
+	Fflags	uint32;
+	Data	int64;
+	Udata	*byte;
+}
+
+type FdSet struct {
+	X__fds_bits [16]uint64;
+}

src/pkg/time/time_test.go

@@ -14,7 +14,7 @@ func init() {
 	// Force US Pacific time for daylight-savings
 	// tests below (localtests).  Needs to be set
 	// before the first call into the time library.
-	os.Setenv("TZ", "US/Pacific")
+	os.Setenv("TZ", "America/Los_Angeles")
 }
 
 type TimeTest struct {