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 (
8	"internal/goarch"
9	"unsafe"
10)
11
12type sigctxt struct {
13	info *siginfo
14	ctxt unsafe.Pointer
15}
16
17//go:nosplit
18//go:nowritebarrierrec
19func (c *sigctxt) regs() *sigcontext { return &(*ucontext)(c.ctxt).uc_mcontext }
20
21func (c *sigctxt) r0() uint32  { return c.regs().r0 }
22func (c *sigctxt) r1() uint32  { return c.regs().r1 }
23func (c *sigctxt) r2() uint32  { return c.regs().r2 }
24func (c *sigctxt) r3() uint32  { return c.regs().r3 }
25func (c *sigctxt) r4() uint32  { return c.regs().r4 }
26func (c *sigctxt) r5() uint32  { return c.regs().r5 }
27func (c *sigctxt) r6() uint32  { return c.regs().r6 }
28func (c *sigctxt) r7() uint32  { return c.regs().r7 }
29func (c *sigctxt) r8() uint32  { return c.regs().r8 }
30func (c *sigctxt) r9() uint32  { return c.regs().r9 }
31func (c *sigctxt) r10() uint32 { return c.regs().r10 }
32func (c *sigctxt) fp() uint32  { return c.regs().fp }
33func (c *sigctxt) ip() uint32  { return c.regs().ip }
34func (c *sigctxt) sp() uint32  { return c.regs().sp }
35func (c *sigctxt) lr() uint32  { return c.regs().lr }
36
37//go:nosplit
38//go:nowritebarrierrec
39func (c *sigctxt) pc() uint32 { return c.regs().pc }
40
41func (c *sigctxt) cpsr() uint32    { return c.regs().cpsr }
42func (c *sigctxt) fault() uintptr  { return uintptr(c.regs().fault_address) }
43func (c *sigctxt) trap() uint32    { return c.regs().trap_no }
44func (c *sigctxt) error() uint32   { return c.regs().error_code }
45func (c *sigctxt) oldmask() uint32 { return c.regs().oldmask }
46
47func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
48func (c *sigctxt) sigaddr() uint32 { return c.info.si_addr }
49
50func (c *sigctxt) set_pc(x uint32)  { c.regs().pc = x }
51func (c *sigctxt) set_sp(x uint32)  { c.regs().sp = x }
52func (c *sigctxt) set_lr(x uint32)  { c.regs().lr = x }
53func (c *sigctxt) set_r10(x uint32) { c.regs().r10 = x }
54
55func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) }
56func (c *sigctxt) set_sigaddr(x uint32) {
57	*(*uintptr)(add(unsafe.Pointer(c.info), 2*goarch.PtrSize)) = uintptr(x)
58}
59