8l, runtime: initial support for Plan 9
No multiple processes/locks, managed to compile
and run a hello.go (with print not fmt). Also test/sieve.go
seems to run until 439 and stops with a
'throw: all goroutines are asleep - deadlock!'
- just like runtime/tiny.
based on Russ's suggestions at:
http://groups.google.com/group/comp.os.plan9/browse_thread/thread/cfda8b82535d2d68/243777a597ec1612
Build instructions:
cd src/pkg/runtime
make clean && GOOS=plan9 make install
this will build and install the runtime.
When linking with 8l, you should pass -s to suppress symbol
generation in the a.out, otherwise the generated executable will not run.
This is runtime only, the porting of the toolchain has already
been done: http://code.google.com/p/go-plan9/source/browse
in the plan9-quanstro branch.
R=rsc
CC=golang-dev
https://golang.org/cl/2273041
diff --git a/src/pkg/runtime/plan9/386/rt0.s b/src/pkg/runtime/plan9/386/rt0.s
new file mode 100644
index 0000000..e8d65d3
--- /dev/null
+++ b/src/pkg/runtime/plan9/386/rt0.s
@@ -0,0 +1,32 @@
+// Copyright 2010 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.
+
+TEXT _rt0_386_plan9(SB),7, $0
+ MOVL AX, _tos(SB)
+
+ // move arguments down to make room for
+ // m and g at top of stack, right before Tos.
+ MOVL SP, SI
+ SUBL $8, SP
+ MOVL SP, DI
+
+ MOVL AX, CX
+ SUBL SI, CX
+ CLD
+ REP; MOVSB
+
+ // adjust argv
+ SUBL SI, DI
+ MOVL newargc+0(SP), CX
+ LEAL newargv+4(SP), BP
+argv_fix:
+ ADDL DI, 0(BP)
+ ADDL $4, BP
+ LOOP argv_fix
+
+ JMP _rt0_386(SB)
+
+DATA isplan9+0(SB)/4, $1
+GLOBL isplan9(SB), $4
+GLOBL _tos(SB), $4
