// Copyright 2014 The Go Authors.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package runtime

import "unsafe"

type sigctxt struct {
	info *siginfo
	ctxt unsafe.Pointer
}

func (c *sigctxt) regs() *regs32   { return &(*ucontext)(c.ctxt).uc_mcontext.ss }
func (c *sigctxt) r0() uint32      { return c.regs().r[0] }
func (c *sigctxt) r1() uint32      { return c.regs().r[1] }
func (c *sigctxt) r2() uint32      { return c.regs().r[2] }
func (c *sigctxt) r3() uint32      { return c.regs().r[3] }
func (c *sigctxt) r4() uint32      { return c.regs().r[4] }
func (c *sigctxt) r5() uint32      { return c.regs().r[5] }
func (c *sigctxt) r6() uint32      { return c.regs().r[6] }
func (c *sigctxt) r7() uint32      { return c.regs().r[7] }
func (c *sigctxt) r8() uint32      { return c.regs().r[8] }
func (c *sigctxt) r9() uint32      { return c.regs().r[9] }
func (c *sigctxt) r10() uint32     { return c.regs().r[10] }
func (c *sigctxt) fp() uint32      { return c.regs().r[11] }
func (c *sigctxt) ip() uint32      { return c.regs().r[12] }
func (c *sigctxt) sp() uint32      { return c.regs().sp }
func (c *sigctxt) lr() uint32      { return c.regs().lr }
func (c *sigctxt) pc() uint32      { return c.regs().pc }
func (c *sigctxt) cpsr() uint32    { return c.regs().cpsr }
func (c *sigctxt) fault() uint32   { return uint32(uintptr(unsafe.Pointer(c.info.si_addr))) }
func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
func (c *sigctxt) trap() uint32    { return 0 }
func (c *sigctxt) error() uint32   { return 0 }
func (c *sigctxt) oldmask() uint32 { return 0 }

func (c *sigctxt) set_pc(x uint32)  { c.regs().pc = x }
func (c *sigctxt) set_sp(x uint32)  { c.regs().sp = x }
func (c *sigctxt) set_lr(x uint32)  { c.regs().lr = x }
func (c *sigctxt) set_r10(x uint32) { c.regs().r[10] = x }

func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) }
func (c *sigctxt) set_sigaddr(x uint32) { c.info.si_addr = (*byte)(unsafe.Pointer(uintptr(x))) }