move darwin specific code into runtime/darwin/

move darwin-amd64 specific code into runtime/darwin/amd64/
repeat for linux.

move rt0 into runtime.a instead of keeping a separate .6 file.
6l seems to have no problem with that.

TBR=r
OCL=26680
CL=26680

1 files changed, 48 insertions, 0 deletions

diff --git a/src/runtime/darwin/signals.h b/src/runtime/darwin/signals.h
new file mode 100644
index 000000000..c4d586049
--- /dev/null
+++ b/src/runtime/darwin/signals.h
@@ -0,0 +1,48 @@
+// 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",	/* used by panic and array out of bounds, etc. */
+	/* 6 */	C, "SIGABRT: abort",
+	/* 7 */	C, "SIGEMT: emulate instruction executed",
+	/* 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 */	0, "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",
+	/* 18 */	0, "SIGTSTP: keyboard stop",
+	/* 19 */	0, "SIGCONT: continue after stop",
+	/* 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: status request from keyboard",
+	/* 30 */	0, "SIGUSR1: user-defined signal 1",
+	/* 31 */	0, "SIGUSR2: user-defined signal 2",
+};
+#undef C
+#undef I
+#undef R
+
+#define	NSIG 32