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) r0() uint32  { return c.regs().sc_r0 }
21func (c *sigctxt) r1() uint32  { return c.regs().sc_r1 }
22func (c *sigctxt) r2() uint32  { return c.regs().sc_r2 }
23func (c *sigctxt) r3() uint32  { return c.regs().sc_r3 }
24func (c *sigctxt) r4() uint32  { return c.regs().sc_r4 }
25func (c *sigctxt) r5() uint32  { return c.regs().sc_r5 }
26func (c *sigctxt) r6() uint32  { return c.regs().sc_r6 }
27func (c *sigctxt) r7() uint32  { return c.regs().sc_r7 }
28func (c *sigctxt) r8() uint32  { return c.regs().sc_r8 }
29func (c *sigctxt) r9() uint32  { return c.regs().sc_r9 }
30func (c *sigctxt) r10() uint32 { return c.regs().sc_r10 }
31func (c *sigctxt) fp() uint32  { return c.regs().sc_r11 }
32func (c *sigctxt) ip() uint32  { return c.regs().sc_r12 }
33func (c *sigctxt) sp() uint32  { return c.regs().sc_usr_sp }
34func (c *sigctxt) lr() uint32  { return c.regs().sc_usr_lr }
35
36//go:nosplit
37//go:nowritebarrierrec
38func (c *sigctxt) pc() uint32 { return c.regs().sc_pc }
39
40func (c *sigctxt) cpsr() uint32    { return c.regs().sc_spsr }
41func (c *sigctxt) fault() uintptr  { return uintptr(c.sigaddr()) }
42func (c *sigctxt) trap() uint32    { return 0 }
43func (c *sigctxt) error() uint32   { return 0 }
44func (c *sigctxt) oldmask() uint32 { return 0 }
45
46func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
47func (c *sigctxt) sigaddr() uint32 {
48	return *(*uint32)(add(unsafe.Pointer(c.info), 16))
49}
50
51func (c *sigctxt) set_pc(x uint32)  { c.regs().sc_pc = x }
52func (c *sigctxt) set_sp(x uint32)  { c.regs().sc_usr_sp = x }
53func (c *sigctxt) set_lr(x uint32)  { c.regs().sc_usr_lr = x }
54func (c *sigctxt) set_r10(x uint32) { c.regs().sc_r10 = x }
55
56func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) }
57func (c *sigctxt) set_sigaddr(x uint32) {
58	*(*uint32)(add(unsafe.Pointer(c.info), 16)) = x
59}
60