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go/src/pkg/runtime/rt0_plan9_386.s

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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
2010-10-18 10:32:55 -06:00
// 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.
runtime: convert .s textflags from numbers to symbolic constants. Remove NOPROF/DUPOK from everything. Edits done with a script, except pclinetest.asm which depended on the DUPOK flag on main(). R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/12613044
2013-08-07 13:20:05 -06:00
#include "../../cmd/ld/textflag.h"
TEXT _rt0_386_plan9(SB),NOSPLIT, $0
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
2010-10-18 10:32:55 -06:00
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 $4, BP
LOOP argv_fix
runtime: fix floating point exception on Plan 9 Change 5660047 moved an FLDCW instruction that disables invalid operand traps into runtime·asminit, which is called from runtime·mstart. Thus, runtime·check is being called prior to setting the appropriate control bits, which on any QNaN comparison will cause Plan 9 to take an invalid operand trap. This change loads the control bits (for Plan 9) prior to runtime·check. Ideally, this should be done before the QNaN checks on any system, but possibly other kernels simply don't ever trap on invalid operands. R=golang-dev, rminnich CC=golang-dev, john, rsc https://golang.org/cl/5939045
2012-04-10 13:14:10 -06:00
CALL runtime·asminit(SB)
runtime: change 386 startup convention Now the default startup is that the program begins at _rt0_386_$GOOS, which behaves as if calling main(argc, argv). Main jumps to _rt0_386. This makes the _rt0_386 entry match the expected semantics for the standard C "main" function, which we can now provide for use when linking against a standard C library. 386 analogue of https://golang.org/cl/7525043 R=golang-dev, r CC=golang-dev https://golang.org/cl/7551045
2013-03-07 20:57:10 -07:00
MOVL 0(SP), AX
LEAL 4(SP), BX
PUSHL BX
PUSHL AX
PUSHL $-1
runtime: rename _rt0_$GOARCH to _rt0_go There's no reason to use a different name on each architecture, and doing so makes it impossible for portable code to refer to the original Go runtime entry point. Rename it _rt0_go everywhere. This is a global search and replace only. R=golang-dev, bradfitz, minux.ma CC=golang-dev https://golang.org/cl/10196043
2013-06-11 14:49:24 -06:00
JMP _rt0_go(SB)
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
2010-10-18 10:32:55 -06:00
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost Prefix all external symbols in runtime by runtime·, to avoid conflicts with possible symbols of the same name in linked-in C libraries. The obvious conflicts are printf, malloc, and free, but hide everything to avoid future pain. The symbols left alone are: ** known to cgo ** _cgo_free _cgo_malloc libcgo_thread_start initcgo ncgocall ** known to linker ** _rt0_$GOARCH _rt0_$GOARCH_$GOOS text etext data end pclntab epclntab symtab esymtab ** known to C compiler ** _divv _modv _div64by32 etc (arch specific) Tested on darwin/386, darwin/amd64, linux/386, linux/amd64. Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386. R=r, PeterGo CC=golang-dev https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
DATA runtime·isplan9(SB)/4, $1
GLOBL runtime·isplan9(SB), $4
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
2010-10-18 10:32:55 -06:00
GLOBL _tos(SB), $4
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