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() *mcontextt { return &(*ucontextt)(c.ctxt).uc_mcontext }
17
18func (c *sigctxt) r0() uint32  { return c.regs().__gregs[_REG_R0] }
19func (c *sigctxt) r1() uint32  { return c.regs().__gregs[_REG_R1] }
20func (c *sigctxt) r2() uint32  { return c.regs().__gregs[_REG_R2] }
21func (c *sigctxt) r3() uint32  { return c.regs().__gregs[_REG_R3] }
22func (c *sigctxt) r4() uint32  { return c.regs().__gregs[_REG_R4] }
23func (c *sigctxt) r5() uint32  { return c.regs().__gregs[_REG_R5] }
24func (c *sigctxt) r6() uint32  { return c.regs().__gregs[_REG_R6] }
25func (c *sigctxt) r7() uint32  { return c.regs().__gregs[_REG_R7] }
26func (c *sigctxt) r8() uint32  { return c.regs().__gregs[_REG_R8] }
27func (c *sigctxt) r9() uint32  { return c.regs().__gregs[_REG_R9] }
28func (c *sigctxt) r10() uint32 { return c.regs().__gregs[_REG_R10] }
29func (c *sigctxt) fp() uint32  { return c.regs().__gregs[_REG_R11] }
30func (c *sigctxt) ip() uint32  { return c.regs().__gregs[_REG_R12] }
31func (c *sigctxt) sp() uint32  { return c.regs().__gregs[_REG_R13] }
32func (c *sigctxt) lr() uint32  { return c.regs().__gregs[_REG_R14] }
33
34//go:nosplit
35//go:nowritebarrierrec
36func (c *sigctxt) pc() uint32 { return c.regs().__gregs[_REG_R15] }
37
38func (c *sigctxt) cpsr() uint32    { return c.regs().__gregs[_REG_CPSR] }
39func (c *sigctxt) fault() uintptr  { return uintptr(c.info._reason) }
40func (c *sigctxt) trap() uint32    { return 0 }
41func (c *sigctxt) error() uint32   { return 0 }
42func (c *sigctxt) oldmask() uint32 { return 0 }
43
44func (c *sigctxt) sigcode() uint32 { return uint32(c.info._code) }
45func (c *sigctxt) sigaddr() uint32 { return uint32(c.info._reason) }
46
47func (c *sigctxt) set_pc(x uint32)  { c.regs().__gregs[_REG_R15] = x }
48func (c *sigctxt) set_sp(x uint32)  { c.regs().__gregs[_REG_R13] = x }
49func (c *sigctxt) set_lr(x uint32)  { c.regs().__gregs[_REG_R14] = x }
50func (c *sigctxt) set_r10(x uint32) { c.regs().__gregs[_REG_R10] = x }
51
52func (c *sigctxt) set_sigcode(x uint32) { c.info._code = int32(x) }
53func (c *sigctxt) set_sigaddr(x uint32) {
54	c.info._reason = uintptr(x)
55}
56