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author | Russ Cox <rsc@golang.org> | 2014-11-11 17:05:55 -0500 |
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committer | Russ Cox <rsc@golang.org> | 2014-11-11 17:05:55 -0500 |
commit | 2d917c0c26f9a3ecbb5918839f9cdb4cdc311f16 (patch) | |
tree | 05d1c196d9154f8d2f0386536baa469fd6f128f0 /src/runtime/signal_linux_386.go | |
parent | 9f99d531a05027ea12315a6421edf0aa9f905d70 (diff) | |
download | go-2d917c0c26f9a3ecbb5918839f9cdb4cdc311f16.tar.gz go-2d917c0c26f9a3ecbb5918839f9cdb4cdc311f16.zip |
[dev.cc] runtime: convert signal handlers from C to Go
This code overused macros and could not be
converted automatically. Instead a new sigctxt
type had to be defined for each os/arch combination,
with a common (implicit) interface used by the
arch-specific signal handler code.
[This CL is part of the removal of C code from package runtime.
See golang.org/s/dev.cc for an overview.]
LGTM=r
R=r
CC=austin, dvyukov, golang-codereviews, iant, khr
https://golang.org/cl/168500044
Diffstat (limited to 'src/runtime/signal_linux_386.go')
-rw-r--r-- | src/runtime/signal_linux_386.go | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/runtime/signal_linux_386.go b/src/runtime/signal_linux_386.go new file mode 100644 index 0000000000..41eae80ea2 --- /dev/null +++ b/src/runtime/signal_linux_386.go @@ -0,0 +1,36 @@ +// Copyright 2013 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. + +package runtime + +import "unsafe" + +type sigctxt struct { + info *siginfo + ctxt unsafe.Pointer +} + +func (c *sigctxt) regs() *sigcontext { return &(*ucontext)(c.ctxt).uc_mcontext } +func (c *sigctxt) eax() uint32 { return c.regs().eax } +func (c *sigctxt) ebx() uint32 { return c.regs().ebx } +func (c *sigctxt) ecx() uint32 { return c.regs().ecx } +func (c *sigctxt) edx() uint32 { return c.regs().edx } +func (c *sigctxt) edi() uint32 { return c.regs().edi } +func (c *sigctxt) esi() uint32 { return c.regs().esi } +func (c *sigctxt) ebp() uint32 { return c.regs().ebp } +func (c *sigctxt) esp() uint32 { return c.regs().esp } +func (c *sigctxt) eip() uint32 { return c.regs().eip } +func (c *sigctxt) eflags() uint32 { return c.regs().eflags } +func (c *sigctxt) cs() uint32 { return uint32(c.regs().cs) } +func (c *sigctxt) fs() uint32 { return uint32(c.regs().fs) } +func (c *sigctxt) gs() uint32 { return uint32(c.regs().gs) } +func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) } +func (c *sigctxt) sigaddr() uint32 { return uint32(*(*uintptr)(add(unsafe.Pointer(c.info), 2*ptrSize))) } + +func (c *sigctxt) set_eip(x uint32) { c.regs().eip = x } +func (c *sigctxt) set_esp(x uint32) { c.regs().esp = x } +func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) } +func (c *sigctxt) set_sigaddr(x uint32) { + *(*uintptr)(add(unsafe.Pointer(c.info), 2*ptrSize)) = uintptr(x) +} |