runtime: fix build (panic) for FreeBSD

R=adg
CC=golang-dev
https://golang.org/cl/867046

src/pkg/runtime/freebsd/386/defs.h

-// godefs freebsd/defs.c
+// godefs defs.c
 
 // MACHINE GENERATED - DO NOT EDIT.
 
@@ -16,6 +16,50 @@ enum {
 	UMTX_OP_WAIT = 0x2,
 	UMTX_OP_WAKE = 0x3,
 	EINTR = 0x4,
+	SIGHUP = 0x1,
+	SIGINT = 0x2,
+	SIGQUIT = 0x3,
+	SIGILL = 0x4,
+	SIGTRAP = 0x5,
+	SIGABRT = 0x6,
+	SIGEMT = 0x7,
+	SIGFPE = 0x8,
+	SIGKILL = 0x9,
+	SIGBUS = 0xa,
+	SIGSEGV = 0xb,
+	SIGSYS = 0xc,
+	SIGPIPE = 0xd,
+	SIGALRM = 0xe,
+	SIGTERM = 0xf,
+	SIGURG = 0x10,
+	SIGSTOP = 0x11,
+	SIGTSTP = 0x12,
+	SIGCONT = 0x13,
+	SIGCHLD = 0x14,
+	SIGTTIN = 0x15,
+	SIGTTOU = 0x16,
+	SIGIO = 0x17,
+	SIGXCPU = 0x18,
+	SIGXFSZ = 0x19,
+	SIGVTALRM = 0x1a,
+	SIGPROF = 0x1b,
+	SIGWINCH = 0x1c,
+	SIGINFO = 0x1d,
+	SIGUSR1 = 0x1e,
+	SIGUSR2 = 0x1f,
+	FPE_INTDIV = 0x2,
+	FPE_INTOVF = 0x1,
+	FPE_FLTDIV = 0x3,
+	FPE_FLTOVF = 0x4,
+	FPE_FLTUND = 0x5,
+	FPE_FLTRES = 0x6,
+	FPE_FLTINV = 0x7,
+	FPE_FLTSUB = 0x8,
+	BUS_ADRALN = 0x1,
+	BUS_ADRERR = 0x2,
+	BUS_OBJERR = 0x3,
+	SEGV_MAPERR = 0x1,
+	SEGV_ACCERR = 0x2,
 };
 
 // Types
@@ -109,9 +153,7 @@ struct Mcontext {
 	int32 mc_ownedfp;
 	int32 mc_spare1[1];
 	int32 mc_fpstate[128];
-	int32 mc_fsbase;
-	int32 mc_gsbase;
-	int32 mc_spare2[6];
+	int32 mc_spare2[8];
 };
 
 typedef struct Ucontext Ucontext;

src/pkg/runtime/freebsd/386/signal.c

@@ -49,6 +49,8 @@ sighandler(int32 sig, Siginfo* info, void* context)
 {
 	Ucontext *uc;
 	Mcontext *r;
+	G *gp;
+	uintptr *sp;
 
 	uc = context;
 	r = &uc->uc_mcontext;

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

@@ -16,6 +16,50 @@ enum {
 	UMTX_OP_WAIT = 0x2,
 	UMTX_OP_WAKE = 0x3,
 	EINTR = 0x4,
+	SIGHUP = 0x1,
+	SIGINT = 0x2,
+	SIGQUIT = 0x3,
+	SIGILL = 0x4,
+	SIGTRAP = 0x5,
+	SIGABRT = 0x6,
+	SIGEMT = 0x7,
+	SIGFPE = 0x8,
+	SIGKILL = 0x9,
+	SIGBUS = 0xa,
+	SIGSEGV = 0xb,
+	SIGSYS = 0xc,
+	SIGPIPE = 0xd,
+	SIGALRM = 0xe,
+	SIGTERM = 0xf,
+	SIGURG = 0x10,
+	SIGSTOP = 0x11,
+	SIGTSTP = 0x12,
+	SIGCONT = 0x13,
+	SIGCHLD = 0x14,
+	SIGTTIN = 0x15,
+	SIGTTOU = 0x16,
+	SIGIO = 0x17,
+	SIGXCPU = 0x18,
+	SIGXFSZ = 0x19,
+	SIGVTALRM = 0x1a,
+	SIGPROF = 0x1b,
+	SIGWINCH = 0x1c,
+	SIGINFO = 0x1d,
+	SIGUSR1 = 0x1e,
+	SIGUSR2 = 0x1f,
+	FPE_INTDIV = 0x2,
+	FPE_INTOVF = 0x1,
+	FPE_FLTDIV = 0x3,
+	FPE_FLTOVF = 0x4,
+	FPE_FLTUND = 0x5,
+	FPE_FLTRES = 0x6,
+	FPE_FLTINV = 0x7,
+	FPE_FLTSUB = 0x8,
+	BUS_ADRALN = 0x1,
+	BUS_ADRERR = 0x2,
+	BUS_OBJERR = 0x3,
+	SEGV_MAPERR = 0x1,
+	SEGV_ACCERR = 0x2,
 };
 
 // Types

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

@@ -57,6 +57,8 @@ sighandler(int32 sig, Siginfo* info, void* context)
 {
 	Ucontext *uc;
 	Mcontext *r;
+	G *gp;
+	uintptr *sp;
 
 	uc = context;
 	r = &uc->uc_mcontext;
@@ -98,7 +100,7 @@ sighandler(int32 sig, Siginfo* info, void* context)
 	if(gotraceback()){
 		traceback((void*)r->mc_rip, (void*)r->mc_rsp, 0, (void*)r->mc_r15);
 		tracebackothers((void*)r->mc_r15);
-		dumpregs(mc);
+		dumpregs(r);
 	}
 
 	breakpoint();

src/pkg/runtime/freebsd/os.h

 int32 thr_new(ThrParam*, int32);
+void sigpanic(void);
+void sigaltstack(Sigaltstack*, Sigaltstack*);
+struct sigaction;
+void sigaction(int32, struct sigaction*, struct sigaction*);

src/pkg/runtime/freebsd/thread.c

@@ -3,10 +3,10 @@
 
 #include "runtime.h"
 #include "defs.h"
-#include "signals.h"
 #include "os.h"
 
 extern SigTab sigtab[];
+extern int32 sys_umtx_op(uint32*, int32, uint32, void*, void*);
 
 // 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.
@@ -102,7 +102,7 @@ unlock(Lock *l)
 }
 
 void
-destroylock(Lock *l)
+destroylock(Lock*)
 {
 }
 

src/pkg/runtime/runtime.c

@@ -22,8 +22,6 @@ gotraceback(void)
 void
 panic(int32 unused)
 {
-	uint8 *sp;
-
 	fd = 2;
 	if(panicking) {
 		printf("double panic\n");