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 {
17	return (*mcontextt)(unsafe.Pointer(&(*ucontextt)(c.ctxt).uc_mcontext))
18}
19
20func (c *sigctxt) rax() uint64 { return c.regs().__gregs[_REG_RAX] }
21func (c *sigctxt) rbx() uint64 { return c.regs().__gregs[_REG_RBX] }
22func (c *sigctxt) rcx() uint64 { return c.regs().__gregs[_REG_RCX] }
23func (c *sigctxt) rdx() uint64 { return c.regs().__gregs[_REG_RDX] }
24func (c *sigctxt) rdi() uint64 { return c.regs().__gregs[_REG_RDI] }
25func (c *sigctxt) rsi() uint64 { return c.regs().__gregs[_REG_RSI] }
26func (c *sigctxt) rbp() uint64 { return c.regs().__gregs[_REG_RBP] }
27func (c *sigctxt) rsp() uint64 { return c.regs().__gregs[_REG_RSP] }
28func (c *sigctxt) r8() uint64  { return c.regs().__gregs[_REG_R8] }
29func (c *sigctxt) r9() uint64  { return c.regs().__gregs[_REG_R9] }
30func (c *sigctxt) r10() uint64 { return c.regs().__gregs[_REG_R10] }
31func (c *sigctxt) r11() uint64 { return c.regs().__gregs[_REG_R11] }
32func (c *sigctxt) r12() uint64 { return c.regs().__gregs[_REG_R12] }
33func (c *sigctxt) r13() uint64 { return c.regs().__gregs[_REG_R13] }
34func (c *sigctxt) r14() uint64 { return c.regs().__gregs[_REG_R14] }
35func (c *sigctxt) r15() uint64 { return c.regs().__gregs[_REG_R15] }
36
37//go:nosplit
38//go:nowritebarrierrec
39func (c *sigctxt) rip() uint64 { return c.regs().__gregs[_REG_RIP] }
40
41func (c *sigctxt) rflags() uint64  { return c.regs().__gregs[_REG_RFLAGS] }
42func (c *sigctxt) cs() uint64      { return c.regs().__gregs[_REG_CS] }
43func (c *sigctxt) fs() uint64      { return c.regs().__gregs[_REG_FS] }
44func (c *sigctxt) gs() uint64      { return c.regs().__gregs[_REG_GS] }
45func (c *sigctxt) sigcode() uint64 { return uint64(c.info._code) }
46func (c *sigctxt) sigaddr() uint64 {
47	return *(*uint64)(unsafe.Pointer(&c.info._reason[0]))
48}
49
50func (c *sigctxt) set_rip(x uint64)     { c.regs().__gregs[_REG_RIP] = x }
51func (c *sigctxt) set_rsp(x uint64)     { c.regs().__gregs[_REG_RSP] = x }
52func (c *sigctxt) set_sigcode(x uint64) { c.info._code = int32(x) }
53func (c *sigctxt) set_sigaddr(x uint64) {
54	*(*uint64)(unsafe.Pointer(&c.info._reason[0])) = x
55}
56