1// Copyright 2013 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5package runtime
6
7import "unsafe"
8
9type sigctxt struct {
10	info *siginfo
11	ctxt unsafe.Pointer
12}
13
14//go:nosplit
15//go:nowritebarrierrec
16func (c *sigctxt) regs() *sigcontext {
17	return (*sigcontext)(c.ctxt)
18}
19
20func (c *sigctxt) eax() uint32 { return c.regs().sc_eax }
21func (c *sigctxt) ebx() uint32 { return c.regs().sc_ebx }
22func (c *sigctxt) ecx() uint32 { return c.regs().sc_ecx }
23func (c *sigctxt) edx() uint32 { return c.regs().sc_edx }
24func (c *sigctxt) edi() uint32 { return c.regs().sc_edi }
25func (c *sigctxt) esi() uint32 { return c.regs().sc_esi }
26func (c *sigctxt) ebp() uint32 { return c.regs().sc_ebp }
27func (c *sigctxt) esp() uint32 { return c.regs().sc_esp }
28
29//go:nosplit
30//go:nowritebarrierrec
31func (c *sigctxt) eip() uint32 { return c.regs().sc_eip }
32
33func (c *sigctxt) eflags() uint32  { return c.regs().sc_eflags }
34func (c *sigctxt) cs() uint32      { return c.regs().sc_cs }
35func (c *sigctxt) fs() uint32      { return c.regs().sc_fs }
36func (c *sigctxt) gs() uint32      { return c.regs().sc_gs }
37func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
38func (c *sigctxt) sigaddr() uint32 {
39	return *(*uint32)(add(unsafe.Pointer(c.info), 12))
40}
41
42func (c *sigctxt) set_eip(x uint32)     { c.regs().sc_eip = x }
43func (c *sigctxt) set_esp(x uint32)     { c.regs().sc_esp = x }
44func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) }
45func (c *sigctxt) set_sigaddr(x uint32) {
46	*(*uint32)(add(unsafe.Pointer(c.info), 12)) = x
47}
48