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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() *mcontext {
     15 	return (*mcontext)(unsafe.Pointer(&(*ucontext)(c.ctxt).uc_mcontext))
     16 }
     17 func (c *sigctxt) rax() uint64     { return c.regs().mc_rax }
     18 func (c *sigctxt) rbx() uint64     { return c.regs().mc_rbx }
     19 func (c *sigctxt) rcx() uint64     { return c.regs().mc_rcx }
     20 func (c *sigctxt) rdx() uint64     { return c.regs().mc_rdx }
     21 func (c *sigctxt) rdi() uint64     { return c.regs().mc_rdi }
     22 func (c *sigctxt) rsi() uint64     { return c.regs().mc_rsi }
     23 func (c *sigctxt) rbp() uint64     { return c.regs().mc_rbp }
     24 func (c *sigctxt) rsp() uint64     { return c.regs().mc_rsp }
     25 func (c *sigctxt) r8() uint64      { return c.regs().mc_r8 }
     26 func (c *sigctxt) r9() uint64      { return c.regs().mc_r9 }
     27 func (c *sigctxt) r10() uint64     { return c.regs().mc_r10 }
     28 func (c *sigctxt) r11() uint64     { return c.regs().mc_r11 }
     29 func (c *sigctxt) r12() uint64     { return c.regs().mc_r12 }
     30 func (c *sigctxt) r13() uint64     { return c.regs().mc_r13 }
     31 func (c *sigctxt) r14() uint64     { return c.regs().mc_r14 }
     32 func (c *sigctxt) r15() uint64     { return c.regs().mc_r15 }
     33 func (c *sigctxt) rip() uint64     { return c.regs().mc_rip }
     34 func (c *sigctxt) rflags() uint64  { return c.regs().mc_rflags }
     35 func (c *sigctxt) cs() uint64      { return uint64(c.regs().mc_cs) }
     36 func (c *sigctxt) fs() uint64      { return uint64(c.regs().mc_fs) }
     37 func (c *sigctxt) gs() uint64      { return uint64(c.regs().mc_gs) }
     38 func (c *sigctxt) sigcode() uint64 { return uint64(c.info.si_code) }
     39 func (c *sigctxt) sigaddr() uint64 { return uint64(c.info.si_addr) }
     40 
     41 func (c *sigctxt) set_rip(x uint64)     { c.regs().mc_rip = x }
     42 func (c *sigctxt) set_rsp(x uint64)     { c.regs().mc_rsp = x }
     43 func (c *sigctxt) set_sigcode(x uint64) { c.info.si_code = int32(x) }
     44 func (c *sigctxt) set_sigaddr(x uint64) { c.info.si_addr = x }
     45