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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 //go:nosplit
     15 //go:nowritebarrierrec
     16 func (c *sigctxt) regs() *mcontextt { return &(*ucontextt)(c.ctxt).uc_mcontext }
     17 
     18 func (c *sigctxt) r0() uint32  { return c.regs().__gregs[_REG_R0] }
     19 func (c *sigctxt) r1() uint32  { return c.regs().__gregs[_REG_R1] }
     20 func (c *sigctxt) r2() uint32  { return c.regs().__gregs[_REG_R2] }
     21 func (c *sigctxt) r3() uint32  { return c.regs().__gregs[_REG_R3] }
     22 func (c *sigctxt) r4() uint32  { return c.regs().__gregs[_REG_R4] }
     23 func (c *sigctxt) r5() uint32  { return c.regs().__gregs[_REG_R5] }
     24 func (c *sigctxt) r6() uint32  { return c.regs().__gregs[_REG_R6] }
     25 func (c *sigctxt) r7() uint32  { return c.regs().__gregs[_REG_R7] }
     26 func (c *sigctxt) r8() uint32  { return c.regs().__gregs[_REG_R8] }
     27 func (c *sigctxt) r9() uint32  { return c.regs().__gregs[_REG_R9] }
     28 func (c *sigctxt) r10() uint32 { return c.regs().__gregs[_REG_R10] }
     29 func (c *sigctxt) fp() uint32  { return c.regs().__gregs[_REG_R11] }
     30 func (c *sigctxt) ip() uint32  { return c.regs().__gregs[_REG_R12] }
     31 func (c *sigctxt) sp() uint32  { return c.regs().__gregs[_REG_R13] }
     32 func (c *sigctxt) lr() uint32  { return c.regs().__gregs[_REG_R14] }
     33 
     34 //go:nosplit
     35 //go:nowritebarrierrec
     36 func (c *sigctxt) pc() uint32 { return c.regs().__gregs[_REG_R15] }
     37 
     38 func (c *sigctxt) cpsr() uint32    { return c.regs().__gregs[_REG_CPSR] }
     39 func (c *sigctxt) fault() uintptr  { return uintptr(c.info._reason) }
     40 func (c *sigctxt) trap() uint32    { return 0 }
     41 func (c *sigctxt) error() uint32   { return 0 }
     42 func (c *sigctxt) oldmask() uint32 { return 0 }
     43 
     44 func (c *sigctxt) sigcode() uint32 { return uint32(c.info._code) }
     45 func (c *sigctxt) sigaddr() uint32 { return uint32(c.info._reason) }
     46 
     47 func (c *sigctxt) set_pc(x uint32)  { c.regs().__gregs[_REG_R15] = x }
     48 func (c *sigctxt) set_sp(x uint32)  { c.regs().__gregs[_REG_R13] = x }
     49 func (c *sigctxt) set_lr(x uint32)  { c.regs().__gregs[_REG_R14] = x }
     50 func (c *sigctxt) set_r10(x uint32) { c.regs().__gregs[_REG_R10] = x }
     51 
     52 func (c *sigctxt) set_sigcode(x uint32) { c.info._code = int32(x) }
     53 func (c *sigctxt) set_sigaddr(x uint32) {
     54 	c.info._reason = uintptr(x)
     55 }
     56