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      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 
      5 package runtime
      6 
      7 import "unsafe"
      8 
      9 type sigctxt struct {
     10 	info *siginfo
     11 	ctxt unsafe.Pointer
     12 }
     13 
     14 func (c *sigctxt) regs() *mcontextt { return &(*ucontextt)(c.ctxt).uc_mcontext }
     15 func (c *sigctxt) eax() uint32      { return c.regs().__gregs[_REG_EAX] }
     16 func (c *sigctxt) ebx() uint32      { return c.regs().__gregs[_REG_EBX] }
     17 func (c *sigctxt) ecx() uint32      { return c.regs().__gregs[_REG_ECX] }
     18 func (c *sigctxt) edx() uint32      { return c.regs().__gregs[_REG_EDX] }
     19 func (c *sigctxt) edi() uint32      { return c.regs().__gregs[_REG_EDI] }
     20 func (c *sigctxt) esi() uint32      { return c.regs().__gregs[_REG_ESI] }
     21 func (c *sigctxt) ebp() uint32      { return c.regs().__gregs[_REG_EBP] }
     22 func (c *sigctxt) esp() uint32      { return c.regs().__gregs[_REG_UESP] }
     23 func (c *sigctxt) eip() uint32      { return c.regs().__gregs[_REG_EIP] }
     24 func (c *sigctxt) eflags() uint32   { return c.regs().__gregs[_REG_EFL] }
     25 func (c *sigctxt) cs() uint32       { return uint32(c.regs().__gregs[_REG_CS]) }
     26 func (c *sigctxt) fs() uint32       { return uint32(c.regs().__gregs[_REG_FS]) }
     27 func (c *sigctxt) gs() uint32       { return uint32(c.regs().__gregs[_REG_GS]) }
     28 func (c *sigctxt) sigcode() uint32  { return uint32(c.info._code) }
     29 func (c *sigctxt) sigaddr() uint32 {
     30 	return uint32(*(*uint32)(unsafe.Pointer(&c.info._reason[0])))
     31 }
     32 
     33 func (c *sigctxt) set_eip(x uint32)     { c.regs().__gregs[_REG_EIP] = x }
     34 func (c *sigctxt) set_esp(x uint32)     { c.regs().__gregs[_REG_UESP] = x }
     35 func (c *sigctxt) set_sigcode(x uint32) { c.info._code = int32(x) }
     36 func (c *sigctxt) set_sigaddr(x uint32) {
     37 	*(*uint32)(unsafe.Pointer(&c.info._reason[0])) = x
     38 }
     39