1// Copyright 2019 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() uint64  { return (uint64)(c.regs().sc_x[0]) }
21func (c *sigctxt) r1() uint64  { return (uint64)(c.regs().sc_x[1]) }
22func (c *sigctxt) r2() uint64  { return (uint64)(c.regs().sc_x[2]) }
23func (c *sigctxt) r3() uint64  { return (uint64)(c.regs().sc_x[3]) }
24func (c *sigctxt) r4() uint64  { return (uint64)(c.regs().sc_x[4]) }
25func (c *sigctxt) r5() uint64  { return (uint64)(c.regs().sc_x[5]) }
26func (c *sigctxt) r6() uint64  { return (uint64)(c.regs().sc_x[6]) }
27func (c *sigctxt) r7() uint64  { return (uint64)(c.regs().sc_x[7]) }
28func (c *sigctxt) r8() uint64  { return (uint64)(c.regs().sc_x[8]) }
29func (c *sigctxt) r9() uint64  { return (uint64)(c.regs().sc_x[9]) }
30func (c *sigctxt) r10() uint64 { return (uint64)(c.regs().sc_x[10]) }
31func (c *sigctxt) r11() uint64 { return (uint64)(c.regs().sc_x[11]) }
32func (c *sigctxt) r12() uint64 { return (uint64)(c.regs().sc_x[12]) }
33func (c *sigctxt) r13() uint64 { return (uint64)(c.regs().sc_x[13]) }
34func (c *sigctxt) r14() uint64 { return (uint64)(c.regs().sc_x[14]) }
35func (c *sigctxt) r15() uint64 { return (uint64)(c.regs().sc_x[15]) }
36func (c *sigctxt) r16() uint64 { return (uint64)(c.regs().sc_x[16]) }
37func (c *sigctxt) r17() uint64 { return (uint64)(c.regs().sc_x[17]) }
38func (c *sigctxt) r18() uint64 { return (uint64)(c.regs().sc_x[18]) }
39func (c *sigctxt) r19() uint64 { return (uint64)(c.regs().sc_x[19]) }
40func (c *sigctxt) r20() uint64 { return (uint64)(c.regs().sc_x[20]) }
41func (c *sigctxt) r21() uint64 { return (uint64)(c.regs().sc_x[21]) }
42func (c *sigctxt) r22() uint64 { return (uint64)(c.regs().sc_x[22]) }
43func (c *sigctxt) r23() uint64 { return (uint64)(c.regs().sc_x[23]) }
44func (c *sigctxt) r24() uint64 { return (uint64)(c.regs().sc_x[24]) }
45func (c *sigctxt) r25() uint64 { return (uint64)(c.regs().sc_x[25]) }
46func (c *sigctxt) r26() uint64 { return (uint64)(c.regs().sc_x[26]) }
47func (c *sigctxt) r27() uint64 { return (uint64)(c.regs().sc_x[27]) }
48func (c *sigctxt) r28() uint64 { return (uint64)(c.regs().sc_x[28]) }
49func (c *sigctxt) r29() uint64 { return (uint64)(c.regs().sc_x[29]) }
50func (c *sigctxt) lr() uint64  { return (uint64)(c.regs().sc_lr) }
51func (c *sigctxt) sp() uint64  { return (uint64)(c.regs().sc_sp) }
52
53//go:nosplit
54//go:nowritebarrierrec
55func (c *sigctxt) rip() uint64 { return (uint64)(c.regs().sc_lr) } /* XXX */
56
57func (c *sigctxt) fault() uintptr  { return uintptr(c.sigaddr()) }
58func (c *sigctxt) sigcode() uint64 { return uint64(c.info.si_code) }
59func (c *sigctxt) sigaddr() uint64 {
60	return *(*uint64)(add(unsafe.Pointer(c.info), 16))
61}
62
63//go:nosplit
64//go:nowritebarrierrec
65func (c *sigctxt) pc() uint64 { return uint64(c.regs().sc_elr) }
66
67func (c *sigctxt) set_pc(x uint64)  { c.regs().sc_elr = uintptr(x) }
68func (c *sigctxt) set_sp(x uint64)  { c.regs().sc_sp = uintptr(x) }
69func (c *sigctxt) set_lr(x uint64)  { c.regs().sc_lr = uintptr(x) }
70func (c *sigctxt) set_r28(x uint64) { c.regs().sc_x[28] = uintptr(x) }
71
72func (c *sigctxt) set_sigcode(x uint64) { c.info.si_code = int32(x) }
73func (c *sigctxt) set_sigaddr(x uint64) {
74	*(*uint64)(add(unsafe.Pointer(c.info), 16)) = x
75}
76