signal_linux_arm.go

     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 (
     8  	"internal/goarch"
     9  	"unsafe"
    10  )
    11  
    12  type sigctxt struct {
    13  	info *siginfo
    14  	ctxt unsafe.Pointer
    15  }
    16  
    17  //go:nosplit
    18  //go:nowritebarrierrec
    19  func (c *sigctxt) regs() *sigcontext { return &(*ucontext)(c.ctxt).uc_mcontext }
    20  
    21  func (c *sigctxt) r0() uint32  { return c.regs().r0 }
    22  func (c *sigctxt) r1() uint32  { return c.regs().r1 }
    23  func (c *sigctxt) r2() uint32  { return c.regs().r2 }
    24  func (c *sigctxt) r3() uint32  { return c.regs().r3 }
    25  func (c *sigctxt) r4() uint32  { return c.regs().r4 }
    26  func (c *sigctxt) r5() uint32  { return c.regs().r5 }
    27  func (c *sigctxt) r6() uint32  { return c.regs().r6 }
    28  func (c *sigctxt) r7() uint32  { return c.regs().r7 }
    29  func (c *sigctxt) r8() uint32  { return c.regs().r8 }
    30  func (c *sigctxt) r9() uint32  { return c.regs().r9 }
    31  func (c *sigctxt) r10() uint32 { return c.regs().r10 }
    32  func (c *sigctxt) fp() uint32  { return c.regs().fp }
    33  func (c *sigctxt) ip() uint32  { return c.regs().ip }
    34  func (c *sigctxt) sp() uint32  { return c.regs().sp }
    35  func (c *sigctxt) lr() uint32  { return c.regs().lr }
    36  
    37  //go:nosplit
    38  //go:nowritebarrierrec
    39  func (c *sigctxt) pc() uint32 { return c.regs().pc }
    40  
    41  func (c *sigctxt) cpsr() uint32    { return c.regs().cpsr }
    42  func (c *sigctxt) fault() uintptr  { return uintptr(c.regs().fault_address) }
    43  func (c *sigctxt) trap() uint32    { return c.regs().trap_no }
    44  func (c *sigctxt) error() uint32   { return c.regs().error_code }
    45  func (c *sigctxt) oldmask() uint32 { return c.regs().oldmask }
    46  
    47  func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
    48  func (c *sigctxt) sigaddr() uint32 { return c.info.si_addr }
    49  
    50  func (c *sigctxt) set_pc(x uint32)  { c.regs().pc = x }
    51  func (c *sigctxt) set_sp(x uint32)  { c.regs().sp = x }
    52  func (c *sigctxt) set_lr(x uint32)  { c.regs().lr = x }
    53  func (c *sigctxt) set_r10(x uint32) { c.regs().r10 = x }
    54  
    55  func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) }
    56  func (c *sigctxt) set_sigaddr(x uint32) {
    57  	*(*uintptr)(add(unsafe.Pointer(c.info), 2*goarch.PtrSize)) = uintptr(x)
    58  }
    59
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