2011-08-29 08:42:16 -06:00
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//
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// System calls and other sys.stuff for 386, OpenBSD
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// /usr/src/sys/kern/syscalls.master for syscall numbers.
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//
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[dev.cc] runtime: convert assembly files for C to Go transition
The main change is that #include "zasm_GOOS_GOARCH.h"
is now #include "go_asm.h" and/or #include "go_tls.h".
Also, because C StackGuard is now Go _StackGuard,
the assembly name changes from const_StackGuard to
const__StackGuard.
In asm_$GOARCH.s, add new function getg, formerly
implemented in C.
The renamed atomics now have Go wrappers, to get
escape analysis annotations right. Those wrappers
are in CL 174860043.
LGTM=r, aram
R=r, aram
CC=austin, dvyukov, golang-codereviews, iant, khr
https://golang.org/cl/168510043
2014-11-11 15:06:22 -07:00
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#include "go_asm.h"
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#include "go_tls.h"
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2014-09-04 21:05:18 -06:00
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#include "textflag.h"
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2011-08-29 08:42:16 -06:00
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2014-02-25 19:20:36 -07:00
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#define CLOCK_MONOTONIC $3
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2011-08-29 08:42:16 -06:00
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// Exit the entire program (like C exit)
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2013-08-07 13:20:05 -06:00
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TEXT runtime·exit(SB),NOSPLIT,$-4
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2011-08-29 08:42:16 -06:00
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MOVL $1, AX
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INT $0x80
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2012-04-11 06:02:08 -06:00
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MOVL $0xf1, 0xf1 // crash
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2011-08-29 08:42:16 -06:00
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RET
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runtime: make it possible to exit Go-created threads
Currently, threads created by the runtime exist until the whole
program exits. For #14592 and #20395, we want to be able to exit and
clean up threads created by the runtime. This commit implements that
mechanism.
The main difficulty is how to clean up the g0 stack. In cgo mode and
on Solaris and Windows where the OS manages thread stacks, we simply
arrange to return from mstart and let the system clean up the thread.
If the runtime allocated the g0 stack, then we use a new exitThread
syscall wrapper that arranges to clear a flag in the M once the stack
can safely be reaped and call the thread termination syscall.
exitThread is based on the existing exit1 wrapper, which was always
meant to terminate the calling thread. However, exit1 has never been
used since it was introduced 9 years ago, so it was broken on several
platforms. exitThread also has the additional complication of having
to flag that the stack is unused, which requires some tricks on
platforms that use the stack for syscalls.
This still leaves the problem of how to reap the unused g0 stacks. For
this, we move the M from allm to a new freem list as part of the M
exiting. Later, allocm scans the freem list, finds Ms that are marked
as done with their stack, removes these from the list and frees their
g0 stacks. This also allows these Ms to be garbage collected.
This CL does not yet use any of this functionality. Follow-up CLs
will. Likewise, there are no new tests in this CL because we'll need
follow-up functionality to test it.
Change-Id: Ic851ee74227b6d39c6fc1219fc71b45d3004bc63
Reviewed-on: https://go-review.googlesource.com/46037
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2017-06-16 13:54:21 -06:00
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// func exitThread(wait *uint32)
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TEXT runtime·exitThread(SB),NOSPLIT,$0-4
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2012-04-11 06:02:08 -06:00
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MOVL $302, AX // sys___threxit
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2011-08-29 08:42:16 -06:00
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INT $0x80
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2012-04-11 06:02:08 -06:00
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MOVL $0xf1, 0xf1 // crash
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runtime: make it possible to exit Go-created threads
Currently, threads created by the runtime exist until the whole
program exits. For #14592 and #20395, we want to be able to exit and
clean up threads created by the runtime. This commit implements that
mechanism.
The main difficulty is how to clean up the g0 stack. In cgo mode and
on Solaris and Windows where the OS manages thread stacks, we simply
arrange to return from mstart and let the system clean up the thread.
If the runtime allocated the g0 stack, then we use a new exitThread
syscall wrapper that arranges to clear a flag in the M once the stack
can safely be reaped and call the thread termination syscall.
exitThread is based on the existing exit1 wrapper, which was always
meant to terminate the calling thread. However, exit1 has never been
used since it was introduced 9 years ago, so it was broken on several
platforms. exitThread also has the additional complication of having
to flag that the stack is unused, which requires some tricks on
platforms that use the stack for syscalls.
This still leaves the problem of how to reap the unused g0 stacks. For
this, we move the M from allm to a new freem list as part of the M
exiting. Later, allocm scans the freem list, finds Ms that are marked
as done with their stack, removes these from the list and frees their
g0 stacks. This also allows these Ms to be garbage collected.
This CL does not yet use any of this functionality. Follow-up CLs
will. Likewise, there are no new tests in this CL because we'll need
follow-up functionality to test it.
Change-Id: Ic851ee74227b6d39c6fc1219fc71b45d3004bc63
Reviewed-on: https://go-review.googlesource.com/46037
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2017-06-16 13:54:21 -06:00
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JMP 0(PC)
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2011-08-29 08:42:16 -06:00
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2013-08-07 13:20:05 -06:00
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TEXT runtime·open(SB),NOSPLIT,$-4
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2013-03-12 11:47:44 -06:00
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MOVL $5, AX
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INT $0x80
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2015-03-02 21:16:48 -07:00
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JAE 2(PC)
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MOVL $-1, AX
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cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
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MOVL AX, ret+12(FP)
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2013-03-12 11:47:44 -06:00
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RET
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2015-04-13 17:37:04 -06:00
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TEXT runtime·closefd(SB),NOSPLIT,$-4
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2013-03-12 11:47:44 -06:00
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MOVL $6, AX
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INT $0x80
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2015-03-02 21:16:48 -07:00
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JAE 2(PC)
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MOVL $-1, AX
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cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
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MOVL AX, ret+4(FP)
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2013-03-12 11:47:44 -06:00
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RET
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2013-08-07 13:20:05 -06:00
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TEXT runtime·read(SB),NOSPLIT,$-4
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2013-03-12 11:47:44 -06:00
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MOVL $3, AX
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INT $0x80
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2015-03-02 21:16:48 -07:00
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JAE 2(PC)
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MOVL $-1, AX
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cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
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MOVL AX, ret+12(FP)
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2013-03-12 11:47:44 -06:00
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RET
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2013-08-07 13:20:05 -06:00
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TEXT runtime·write(SB),NOSPLIT,$-4
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2011-08-29 08:42:16 -06:00
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MOVL $4, AX // sys_write
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INT $0x80
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2015-03-02 21:16:48 -07:00
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JAE 2(PC)
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MOVL $-1, AX
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cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
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MOVL AX, ret+12(FP)
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2011-08-29 08:42:16 -06:00
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RET
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2014-01-11 01:00:32 -07:00
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TEXT runtime·usleep(SB),NOSPLIT,$24
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2011-10-01 12:58:36 -06:00
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MOVL $0, DX
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MOVL usec+0(FP), AX
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MOVL $1000000, CX
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DIVL CX
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2014-01-11 01:00:32 -07:00
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MOVL AX, 12(SP) // tv_sec - l32
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MOVL $0, 16(SP) // tv_sec - h32
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2011-10-01 12:58:36 -06:00
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MOVL $1000, AX
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MULL DX
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2014-01-11 01:00:32 -07:00
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MOVL AX, 20(SP) // tv_nsec
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2011-10-01 12:58:36 -06:00
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MOVL $0, 0(SP)
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LEAL 12(SP), AX
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MOVL AX, 4(SP) // arg 1 - rqtp
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MOVL $0, 8(SP) // arg 2 - rmtp
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2014-01-11 01:00:32 -07:00
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MOVL $91, AX // sys_nanosleep
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2011-10-01 12:58:36 -06:00
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INT $0x80
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RET
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2016-12-07 06:22:09 -07:00
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TEXT runtime·raise(SB),NOSPLIT,$16
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2011-08-29 08:42:16 -06:00
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MOVL $299, AX // sys_getthrid
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2011-09-05 11:05:57 -06:00
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INT $0x80
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2011-08-29 08:42:16 -06:00
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MOVL $0, 0(SP)
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2016-12-07 06:22:09 -07:00
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MOVL AX, 4(SP) // arg 1 - tid
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2013-03-14 23:11:03 -06:00
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MOVL sig+0(FP), AX
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MOVL AX, 8(SP) // arg 2 - signum
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2016-12-07 06:22:09 -07:00
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MOVL $0, 12(SP) // arg 3 - tcb
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MOVL $119, AX // sys_thrkill
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2011-08-29 08:42:16 -06:00
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INT $0x80
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RET
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2015-07-24 17:16:39 -06:00
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TEXT runtime·raiseproc(SB),NOSPLIT,$12
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MOVL $20, AX // sys_getpid
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INT $0x80
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MOVL $0, 0(SP)
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MOVL AX, 4(SP) // arg 1 - pid
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MOVL sig+0(FP), AX
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MOVL AX, 8(SP) // arg 2 - signum
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2016-12-07 06:22:09 -07:00
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MOVL $122, AX // sys_kill
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2015-07-24 17:16:39 -06:00
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INT $0x80
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RET
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2013-08-07 13:20:05 -06:00
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TEXT runtime·mmap(SB),NOSPLIT,$36
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cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
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LEAL addr+0(FP), SI
|
2011-08-29 08:42:16 -06:00
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LEAL 4(SP), DI
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|
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CLD
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MOVSL // arg 1 - addr
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MOVSL // arg 2 - len
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MOVSL // arg 3 - prot
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MOVSL // arg 4 - flags
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MOVSL // arg 5 - fd
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MOVL $0, AX
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STOSL // arg 6 - pad
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MOVSL // arg 7 - offset
|
2012-09-20 23:50:02 -06:00
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MOVL $0, AX // top 32 bits of file offset
|
2011-08-29 08:42:16 -06:00
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STOSL
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MOVL $197, AX // sys_mmap
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|
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|
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INT $0x80
|
2017-10-16 18:28:29 -06:00
|
|
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JAE ok
|
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MOVL $0, p+24(FP)
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MOVL AX, err+28(FP)
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RET
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ok:
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MOVL AX, p+24(FP)
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MOVL $0, err+28(FP)
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2011-08-29 08:42:16 -06:00
|
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|
RET
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|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·munmap(SB),NOSPLIT,$-4
|
2011-08-29 08:42:16 -06:00
|
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MOVL $73, AX // sys_munmap
|
|
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|
INT $0x80
|
|
|
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JAE 2(PC)
|
2012-04-11 06:02:08 -06:00
|
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MOVL $0xf1, 0xf1 // crash
|
2011-08-29 08:42:16 -06:00
|
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|
RET
|
|
|
|
|
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·madvise(SB),NOSPLIT,$-4
|
2012-11-26 04:32:59 -07:00
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MOVL $75, AX // sys_madvise
|
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INT $0x80
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JAE 2(PC)
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MOVL $0xf1, 0xf1 // crash
|
|
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|
RET
|
|
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|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·setitimer(SB),NOSPLIT,$-4
|
2014-01-11 01:00:32 -07:00
|
|
|
MOVL $69, AX
|
2011-08-29 08:42:16 -06:00
|
|
|
INT $0x80
|
|
|
|
|
RET
|
|
|
|
|
|
2017-02-02 14:20:58 -07:00
|
|
|
// func walltime() (sec int64, nsec int32)
|
|
|
|
|
TEXT runtime·walltime(SB), NOSPLIT, $32
|
2011-11-30 09:59:44 -07:00
|
|
|
LEAL 12(SP), BX
|
2014-01-11 01:00:32 -07:00
|
|
|
MOVL $0, 4(SP) // arg 1 - clock_id
|
|
|
|
|
MOVL BX, 8(SP) // arg 2 - tp
|
|
|
|
|
MOVL $87, AX // sys_clock_gettime
|
2011-11-30 09:59:44 -07:00
|
|
|
INT $0x80
|
|
|
|
|
|
2014-01-11 01:00:32 -07:00
|
|
|
MOVL 12(SP), AX // sec - l32
|
2017-02-13 10:06:08 -07:00
|
|
|
MOVL AX, sec_lo+0(FP)
|
2014-01-11 01:00:32 -07:00
|
|
|
MOVL 16(SP), AX // sec - h32
|
2017-02-13 10:06:08 -07:00
|
|
|
MOVL AX, sec_hi+4(FP)
|
2014-01-11 01:00:32 -07:00
|
|
|
|
|
|
|
|
MOVL 20(SP), BX // nsec
|
2011-11-30 09:59:44 -07:00
|
|
|
MOVL BX, nsec+8(FP)
|
|
|
|
|
RET
|
|
|
|
|
|
2011-11-03 15:35:28 -06:00
|
|
|
// int64 nanotime(void) so really
|
|
|
|
|
// void nanotime(int64 *nsec)
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·nanotime(SB),NOSPLIT,$32
|
2011-08-29 08:42:16 -06:00
|
|
|
LEAL 12(SP), BX
|
2014-02-25 19:20:36 -07:00
|
|
|
MOVL CLOCK_MONOTONIC, 4(SP) // arg 1 - clock_id
|
2014-01-11 01:00:32 -07:00
|
|
|
MOVL BX, 8(SP) // arg 2 - tp
|
|
|
|
|
MOVL $87, AX // sys_clock_gettime
|
2011-08-29 08:42:16 -06:00
|
|
|
INT $0x80
|
2011-11-03 15:35:28 -06:00
|
|
|
|
2014-01-11 01:00:32 -07:00
|
|
|
MOVL 16(SP), CX // sec - h32
|
|
|
|
|
IMULL $1000000000, CX
|
|
|
|
|
|
|
|
|
|
MOVL 12(SP), AX // sec - l32
|
|
|
|
|
MOVL $1000000000, BX
|
|
|
|
|
MULL BX // result in dx:ax
|
|
|
|
|
|
|
|
|
|
MOVL 20(SP), BX // nsec
|
2011-11-03 15:35:28 -06:00
|
|
|
ADDL BX, AX
|
2014-01-11 01:00:32 -07:00
|
|
|
ADCL CX, DX // add high bits with carry
|
runtime: use clock_gettime to get ns resolution for time.now & runtime.nanotime
For Linux/{386,arm}, FreeBSD/{386,amd64,arm}, NetBSD/{386,amd64}, OpenBSD/{386,amd64}.
Note: our Darwin implementation already has ns resolution.
Linux/386 (Core i7-2600 @ 3.40GHz, kernel 3.5.2-gentoo)
benchmark old ns/op new ns/op delta
BenchmarkNow 110 118 +7.27%
Linux/ARM (ARM Cortex-A8 @ 800MHz, kernel 2.6.32.28 android)
benchmark old ns/op new ns/op delta
BenchmarkNow 625 542 -13.28%
Linux/ARM (ARM Cortex-A9 @ 1GHz, Pandaboard)
benchmark old ns/op new ns/op delta
BenchmarkNow 992 909 -8.37%
FreeBSD 9-REL-p1/amd64 (Dell R610 Server with Xeon X5650 @ 2.67GHz)
benchmark old ns/op new ns/op delta
BenchmarkNow 699 695 -0.57%
FreeBSD 9-REL-p1/amd64 (Atom D525 @ 1.80GHz)
benchmark old ns/op new ns/op delta
BenchmarkNow 1553 1658 +6.76%
OpenBSD/amd64 (Dell E6410 with i5 CPU M 540 @ 2.53GHz)
benchmark old ns/op new ns/op delta
BenchmarkNow 1262 1236 -2.06%
OpenBSD/i386 (Asus eeePC 701 with Intel Celeron M 900MHz - locked to 631MHz)
benchmark old ns/op new ns/op delta
BenchmarkNow 5089 5043 -0.90%
NetBSD/i386 (VMware VM with Core i5 CPU @ 2.7GHz)
benchmark old ns/op new ns/op delta
BenchmarkNow 277 278 +0.36%
NetBSD/amd64 (VMware VM with Core i5 CPU @ 2.7Ghz)
benchmark old ns/op new ns/op delta
BenchmarkNow 103 105 +1.94%
Thanks Maxim Khitrov, Joel Sing, and Dave Cheney for providing benchmark data.
R=jsing, dave, rsc
CC=golang-dev
https://golang.org/cl/6820120
2012-12-18 07:57:25 -07:00
|
|
|
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL AX, ret_lo+0(FP)
|
|
|
|
|
MOVL DX, ret_hi+4(FP)
|
2011-08-29 08:42:16 -06:00
|
|
|
RET
|
|
|
|
|
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·sigaction(SB),NOSPLIT,$-4
|
2011-08-29 08:42:16 -06:00
|
|
|
MOVL $46, AX // sys_sigaction
|
|
|
|
|
INT $0x80
|
|
|
|
|
JAE 2(PC)
|
2012-04-11 06:02:08 -06:00
|
|
|
MOVL $0xf1, 0xf1 // crash
|
2011-08-29 08:42:16 -06:00
|
|
|
RET
|
|
|
|
|
|
2016-09-23 18:54:51 -06:00
|
|
|
TEXT runtime·obsdsigprocmask(SB),NOSPLIT,$-4
|
2012-04-10 05:57:05 -06:00
|
|
|
MOVL $48, AX // sys_sigprocmask
|
|
|
|
|
INT $0x80
|
|
|
|
|
JAE 2(PC)
|
2012-04-11 06:02:08 -06:00
|
|
|
MOVL $0xf1, 0xf1 // crash
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL AX, ret+8(FP)
|
2012-04-10 05:57:05 -06:00
|
|
|
RET
|
|
|
|
|
|
2015-12-21 23:27:01 -07:00
|
|
|
TEXT runtime·sigfwd(SB),NOSPLIT,$12-16
|
|
|
|
|
MOVL fn+0(FP), AX
|
2016-10-27 15:36:39 -06:00
|
|
|
MOVL sig+4(FP), BX
|
|
|
|
|
MOVL info+8(FP), CX
|
|
|
|
|
MOVL ctx+12(FP), DX
|
|
|
|
|
MOVL SP, SI
|
|
|
|
|
SUBL $32, SP
|
|
|
|
|
ANDL $~15, SP // align stack: handler might be a C function
|
|
|
|
|
MOVL BX, 0(SP)
|
|
|
|
|
MOVL CX, 4(SP)
|
|
|
|
|
MOVL DX, 8(SP)
|
|
|
|
|
MOVL SI, 12(SP) // save SI: handler might be a Go function
|
2013-07-11 14:39:39 -06:00
|
|
|
CALL AX
|
2016-10-27 15:36:39 -06:00
|
|
|
MOVL 12(SP), AX
|
|
|
|
|
MOVL AX, SP
|
2015-12-21 23:27:01 -07:00
|
|
|
RET
|
2011-08-29 08:42:16 -06:00
|
|
|
|
2016-12-15 15:21:13 -07:00
|
|
|
TEXT runtime·sigtramp(SB),NOSPLIT,$28
|
|
|
|
|
// Save callee-saved C registers, since the caller may be a C signal handler.
|
|
|
|
|
MOVL BX, bx-4(SP)
|
|
|
|
|
MOVL BP, bp-8(SP)
|
|
|
|
|
MOVL SI, si-12(SP)
|
|
|
|
|
MOVL DI, di-16(SP)
|
|
|
|
|
// We don't save mxcsr or the x87 control word because sigtrampgo doesn't
|
|
|
|
|
// modify them.
|
|
|
|
|
|
2011-08-29 08:42:16 -06:00
|
|
|
MOVL signo+0(FP), BX
|
|
|
|
|
MOVL BX, 0(SP)
|
|
|
|
|
MOVL info+4(FP), BX
|
|
|
|
|
MOVL BX, 4(SP)
|
|
|
|
|
MOVL context+8(FP), BX
|
|
|
|
|
MOVL BX, 8(SP)
|
2015-12-21 23:27:01 -07:00
|
|
|
CALL runtime·sigtrampgo(SB)
|
2016-12-15 15:21:13 -07:00
|
|
|
|
|
|
|
|
MOVL di-16(SP), DI
|
|
|
|
|
MOVL si-12(SP), SI
|
|
|
|
|
MOVL bp-8(SP), BP
|
|
|
|
|
MOVL bx-4(SP), BX
|
2011-08-29 08:42:16 -06:00
|
|
|
RET
|
|
|
|
|
|
2012-12-18 09:30:29 -07:00
|
|
|
// int32 tfork(void *param, uintptr psize, M *mp, G *gp, void (*fn)(void));
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·tfork(SB),NOSPLIT,$12
|
2011-08-29 08:42:16 -06:00
|
|
|
|
2012-12-18 09:30:29 -07:00
|
|
|
// Copy mp, gp and fn from the parent stack onto the child stack.
|
2014-08-28 15:23:25 -06:00
|
|
|
MOVL param+0(FP), AX
|
2012-11-21 07:25:53 -07:00
|
|
|
MOVL 8(AX), CX // tf_stack
|
2011-08-29 08:42:16 -06:00
|
|
|
SUBL $16, CX
|
2012-11-21 07:25:53 -07:00
|
|
|
MOVL CX, 8(AX)
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL mm+8(FP), SI
|
2011-08-29 08:42:16 -06:00
|
|
|
MOVL SI, 0(CX)
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL gg+12(FP), SI
|
2011-08-29 08:42:16 -06:00
|
|
|
MOVL SI, 4(CX)
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL fn+16(FP), SI
|
2011-08-29 08:42:16 -06:00
|
|
|
MOVL SI, 8(CX)
|
|
|
|
|
MOVL $1234, 12(CX)
|
|
|
|
|
|
|
|
|
|
MOVL $0, 0(SP) // syscall gap
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL param+0(FP), AX
|
2012-04-25 08:08:02 -06:00
|
|
|
MOVL AX, 4(SP) // arg 1 - param
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL psize+4(FP), AX
|
2012-11-21 07:25:53 -07:00
|
|
|
MOVL AX, 8(SP) // arg 2 - psize
|
|
|
|
|
MOVL $8, AX // sys___tfork
|
2011-08-29 08:42:16 -06:00
|
|
|
INT $0x80
|
|
|
|
|
|
2012-04-25 08:08:02 -06:00
|
|
|
// Return if tfork syscall failed.
|
2014-08-28 15:23:25 -06:00
|
|
|
JCC 4(PC)
|
2011-08-29 08:42:16 -06:00
|
|
|
NEGL AX
|
2014-08-28 15:23:25 -06:00
|
|
|
MOVL AX, ret+20(FP)
|
2011-08-29 08:42:16 -06:00
|
|
|
RET
|
|
|
|
|
|
|
|
|
|
// In parent, return.
|
|
|
|
|
CMPL AX, $0
|
2014-08-28 15:23:25 -06:00
|
|
|
JEQ 3(PC)
|
|
|
|
|
MOVL AX, ret+20(FP)
|
2011-08-29 08:42:16 -06:00
|
|
|
RET
|
|
|
|
|
|
|
|
|
|
// Paranoia: check that SP is as we expect.
|
|
|
|
|
MOVL 12(SP), BP
|
|
|
|
|
CMPL BP, $1234
|
|
|
|
|
JEQ 2(PC)
|
|
|
|
|
INT $3
|
|
|
|
|
|
2012-04-25 08:08:02 -06:00
|
|
|
// Reload registers.
|
2011-08-29 08:42:16 -06:00
|
|
|
MOVL 0(SP), BX // m
|
|
|
|
|
MOVL 4(SP), DX // g
|
|
|
|
|
MOVL 8(SP), SI // fn
|
|
|
|
|
|
2012-04-25 08:08:02 -06:00
|
|
|
// Set FS to point at m->tls.
|
2011-08-29 08:42:16 -06:00
|
|
|
LEAL m_tls(BX), BP
|
|
|
|
|
PUSHAL // save registers
|
|
|
|
|
PUSHL BP
|
|
|
|
|
CALL runtime·settls(SB)
|
|
|
|
|
POPL AX
|
|
|
|
|
POPAL
|
|
|
|
|
|
2016-03-01 16:21:55 -07:00
|
|
|
// Now segment is established. Initialize m, g.
|
2011-08-29 08:42:16 -06:00
|
|
|
get_tls(AX)
|
|
|
|
|
MOVL DX, g(AX)
|
all: remove 'extern register M *m' from runtime
The runtime has historically held two dedicated values g (current goroutine)
and m (current thread) in 'extern register' slots (TLS on x86, real registers
backed by TLS on ARM).
This CL removes the extern register m; code now uses g->m.
On ARM, this frees up the register that formerly held m (R9).
This is important for NaCl, because NaCl ARM code cannot use R9 at all.
The Go 1 macrobenchmarks (those with per-op times >= 10 µs) are unaffected:
BenchmarkBinaryTree17 5491374955 5471024381 -0.37%
BenchmarkFannkuch11 4357101311 4275174828 -1.88%
BenchmarkGobDecode 11029957 11364184 +3.03%
BenchmarkGobEncode 6852205 6784822 -0.98%
BenchmarkGzip 650795967 650152275 -0.10%
BenchmarkGunzip 140962363 141041670 +0.06%
BenchmarkHTTPClientServer 71581 73081 +2.10%
BenchmarkJSONEncode 31928079 31913356 -0.05%
BenchmarkJSONDecode 117470065 113689916 -3.22%
BenchmarkMandelbrot200 6008923 5998712 -0.17%
BenchmarkGoParse 6310917 6327487 +0.26%
BenchmarkRegexpMatchMedium_1K 114568 114763 +0.17%
BenchmarkRegexpMatchHard_1K 168977 169244 +0.16%
BenchmarkRevcomp 935294971 914060918 -2.27%
BenchmarkTemplate 145917123 148186096 +1.55%
Minux previous reported larger variations, but these were caused by
run-to-run noise, not repeatable slowdowns.
Actual code changes by Minux.
I only did the docs and the benchmarking.
LGTM=dvyukov, iant, minux
R=minux, josharian, iant, dave, bradfitz, dvyukov
CC=golang-codereviews
https://golang.org/cl/109050043
2014-06-26 09:54:39 -06:00
|
|
|
MOVL BX, g_m(DX)
|
2011-08-29 08:42:16 -06:00
|
|
|
|
|
|
|
|
CALL runtime·stackcheck(SB) // smashes AX, CX
|
|
|
|
|
MOVL 0(DX), DX // paranoia; check they are not nil
|
|
|
|
|
MOVL 0(BX), BX
|
|
|
|
|
|
2012-04-25 08:08:02 -06:00
|
|
|
// More paranoia; check that stack splitting code works.
|
2011-08-29 08:42:16 -06:00
|
|
|
PUSHAL
|
|
|
|
|
CALL runtime·emptyfunc(SB)
|
|
|
|
|
POPAL
|
|
|
|
|
|
2012-04-25 08:08:02 -06:00
|
|
|
// Call fn.
|
2011-08-29 08:42:16 -06:00
|
|
|
CALL SI
|
|
|
|
|
|
runtime: make it possible to exit Go-created threads
Currently, threads created by the runtime exist until the whole
program exits. For #14592 and #20395, we want to be able to exit and
clean up threads created by the runtime. This commit implements that
mechanism.
The main difficulty is how to clean up the g0 stack. In cgo mode and
on Solaris and Windows where the OS manages thread stacks, we simply
arrange to return from mstart and let the system clean up the thread.
If the runtime allocated the g0 stack, then we use a new exitThread
syscall wrapper that arranges to clear a flag in the M once the stack
can safely be reaped and call the thread termination syscall.
exitThread is based on the existing exit1 wrapper, which was always
meant to terminate the calling thread. However, exit1 has never been
used since it was introduced 9 years ago, so it was broken on several
platforms. exitThread also has the additional complication of having
to flag that the stack is unused, which requires some tricks on
platforms that use the stack for syscalls.
This still leaves the problem of how to reap the unused g0 stacks. For
this, we move the M from allm to a new freem list as part of the M
exiting. Later, allocm scans the freem list, finds Ms that are marked
as done with their stack, removes these from the list and frees their
g0 stacks. This also allows these Ms to be garbage collected.
This CL does not yet use any of this functionality. Follow-up CLs
will. Likewise, there are no new tests in this CL because we'll need
follow-up functionality to test it.
Change-Id: Ic851ee74227b6d39c6fc1219fc71b45d3004bc63
Reviewed-on: https://go-review.googlesource.com/46037
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2017-06-16 13:54:21 -06:00
|
|
|
// fn should never return.
|
2011-08-29 08:42:16 -06:00
|
|
|
MOVL $0x1234, 0x1005
|
|
|
|
|
RET
|
|
|
|
|
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·sigaltstack(SB),NOSPLIT,$-8
|
2011-08-29 08:42:16 -06:00
|
|
|
MOVL $288, AX // sys_sigaltstack
|
2016-09-29 22:34:44 -06:00
|
|
|
MOVL new+0(FP), BX
|
|
|
|
|
MOVL old+4(FP), CX
|
2011-08-29 08:42:16 -06:00
|
|
|
INT $0x80
|
|
|
|
|
CMPL AX, $0xfffff001
|
|
|
|
|
JLS 2(PC)
|
|
|
|
|
INT $3
|
|
|
|
|
RET
|
|
|
|
|
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·setldt(SB),NOSPLIT,$4
|
2011-08-29 08:42:16 -06:00
|
|
|
// Under OpenBSD we set the GS base instead of messing with the LDT.
|
2012-11-21 07:25:53 -07:00
|
|
|
MOVL tls0+4(FP), AX
|
2011-08-29 08:42:16 -06:00
|
|
|
MOVL AX, 0(SP)
|
|
|
|
|
CALL runtime·settls(SB)
|
|
|
|
|
RET
|
|
|
|
|
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·settls(SB),NOSPLIT,$8
|
2015-03-03 20:28:45 -07:00
|
|
|
// adjust for ELF: wants to use -4(GS) for g
|
2012-11-21 07:25:53 -07:00
|
|
|
MOVL tlsbase+0(FP), CX
|
2015-03-03 20:28:45 -07:00
|
|
|
ADDL $4, CX
|
2011-08-29 08:42:16 -06:00
|
|
|
MOVL $0, 0(SP) // syscall gap
|
2012-11-21 07:25:53 -07:00
|
|
|
MOVL CX, 4(SP) // arg 1 - tcb
|
|
|
|
|
MOVL $329, AX // sys___set_tcb
|
2011-08-29 08:42:16 -06:00
|
|
|
INT $0x80
|
|
|
|
|
JCC 2(PC)
|
2012-04-11 06:02:08 -06:00
|
|
|
MOVL $0xf1, 0xf1 // crash
|
2011-08-29 08:42:16 -06:00
|
|
|
RET
|
|
|
|
|
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·osyield(SB),NOSPLIT,$-4
|
2011-08-29 08:42:16 -06:00
|
|
|
MOVL $298, AX // sys_sched_yield
|
|
|
|
|
INT $0x80
|
|
|
|
|
RET
|
|
|
|
|
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·thrsleep(SB),NOSPLIT,$-4
|
2014-01-11 01:00:32 -07:00
|
|
|
MOVL $94, AX // sys___thrsleep
|
2011-10-08 07:56:13 -06:00
|
|
|
INT $0x80
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL AX, ret+20(FP)
|
2011-10-08 07:56:13 -06:00
|
|
|
RET
|
|
|
|
|
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·thrwakeup(SB),NOSPLIT,$-4
|
2012-04-11 06:02:08 -06:00
|
|
|
MOVL $301, AX // sys___thrwakeup
|
2011-10-08 07:56:13 -06:00
|
|
|
INT $0x80
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL AX, ret+8(FP)
|
2011-10-08 07:56:13 -06:00
|
|
|
RET
|
|
|
|
|
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·sysctl(SB),NOSPLIT,$28
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
LEAL mib+0(FP), SI
|
2011-10-05 11:16:43 -06:00
|
|
|
LEAL 4(SP), DI
|
|
|
|
|
CLD
|
|
|
|
|
MOVSL // arg 1 - name
|
|
|
|
|
MOVSL // arg 2 - namelen
|
|
|
|
|
MOVSL // arg 3 - oldp
|
|
|
|
|
MOVSL // arg 4 - oldlenp
|
|
|
|
|
MOVSL // arg 5 - newp
|
|
|
|
|
MOVSL // arg 6 - newlen
|
|
|
|
|
MOVL $202, AX // sys___sysctl
|
|
|
|
|
INT $0x80
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
JCC 4(PC)
|
2011-10-05 11:16:43 -06:00
|
|
|
NEGL AX
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL AX, ret+24(FP)
|
2011-10-05 11:16:43 -06:00
|
|
|
RET
|
|
|
|
|
MOVL $0, AX
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL AX, ret+24(FP)
|
2011-10-05 11:16:43 -06:00
|
|
|
RET
|
|
|
|
|
|
2013-05-20 04:25:32 -06:00
|
|
|
// int32 runtime·kqueue(void);
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·kqueue(SB),NOSPLIT,$0
|
2013-08-15 08:22:55 -06:00
|
|
|
MOVL $269, AX
|
2013-05-20 04:25:32 -06:00
|
|
|
INT $0x80
|
|
|
|
|
JAE 2(PC)
|
|
|
|
|
NEGL AX
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL AX, ret+0(FP)
|
2013-05-20 04:25:32 -06:00
|
|
|
RET
|
|
|
|
|
|
|
|
|
|
// int32 runtime·kevent(int kq, Kevent *changelist, int nchanges, Kevent *eventlist, int nevents, Timespec *timeout);
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·kevent(SB),NOSPLIT,$0
|
2014-01-11 01:00:32 -07:00
|
|
|
MOVL $72, AX // sys_kevent
|
2013-05-20 04:25:32 -06:00
|
|
|
INT $0x80
|
|
|
|
|
JAE 2(PC)
|
|
|
|
|
NEGL AX
|
cmd/cc, runtime: convert C compilers to use Go calling convention
To date, the C compilers and Go compilers differed only in how
values were returned from functions. This made it difficult to call
Go from C or C from Go if return values were involved. It also made
assembly called from Go and assembly called from C different.
This CL changes the C compiler to use the Go conventions, passing
results on the stack, after the arguments.
[Exception: this does not apply to C ... functions, because you can't
know where on the stack the arguments end.]
By doing this, the CL makes it possible to rewrite C functions into Go
one at a time, without worrying about which languages call that
function or which languages it calls.
This CL also updates all the assembly files in package runtime to use
the new conventions. Argument references of the form 40(SP) have
been rewritten to the form name+10(FP) instead, and there are now
Go func prototypes for every assembly function called from C or Go.
This means that 'go vet runtime' checks effectively every assembly
function, and go vet's output was used to automate the bulk of the
conversion.
Some functions, like seek and nsec on Plan 9, needed to be rewritten.
Many assembly routines called from C were reading arguments
incorrectly, using MOVL instead of MOVQ or vice versa, especially on
the less used systems like openbsd.
These were found by go vet and have been corrected too.
If we're lucky, this may reduce flakiness on those systems.
Tested on:
darwin/386
darwin/amd64
linux/arm
linux/386
linux/amd64
If this breaks another system, the bug is almost certainly in the
sys_$GOOS_$GOARCH.s file, since the rest of the CL is tested
by the combination of the above systems.
LGTM=dvyukov, iant
R=golang-codereviews, 0intro, dave, alex.brainman, dvyukov, iant
CC=golang-codereviews, josharian, r
https://golang.org/cl/135830043
2014-08-27 09:32:17 -06:00
|
|
|
MOVL AX, ret+24(FP)
|
2013-05-20 04:25:32 -06:00
|
|
|
RET
|
|
|
|
|
|
|
|
|
|
// int32 runtime·closeonexec(int32 fd);
|
2013-08-07 13:20:05 -06:00
|
|
|
TEXT runtime·closeonexec(SB),NOSPLIT,$32
|
2014-01-11 01:00:32 -07:00
|
|
|
MOVL $92, AX // sys_fcntl
|
2013-05-20 04:25:32 -06:00
|
|
|
// 0(SP) is where the caller PC would be; kernel skips it
|
|
|
|
|
MOVL fd+0(FP), BX
|
|
|
|
|
MOVL BX, 4(SP) // fd
|
|
|
|
|
MOVL $2, 8(SP) // F_SETFD
|
|
|
|
|
MOVL $1, 12(SP) // FD_CLOEXEC
|
|
|
|
|
INT $0x80
|
|
|
|
|
JAE 2(PC)
|
|
|
|
|
NEGL AX
|
|
|
|
|
RET
|
|
|
|
|
|
2014-09-24 17:04:06 -06:00
|
|
|
GLOBL runtime·tlsoffset(SB),NOPTR,$4
|
