signal_linux_386.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) eax() uint32 { return c.regs().eax }
    22  func (c *sigctxt) ebx() uint32 { return c.regs().ebx }
    23  func (c *sigctxt) ecx() uint32 { return c.regs().ecx }
    24  func (c *sigctxt) edx() uint32 { return c.regs().edx }
    25  func (c *sigctxt) edi() uint32 { return c.regs().edi }
    26  func (c *sigctxt) esi() uint32 { return c.regs().esi }
    27  func (c *sigctxt) ebp() uint32 { return c.regs().ebp }
    28  func (c *sigctxt) esp() uint32 { return c.regs().esp }
    29  
    30  //go:nosplit
    31  //go:nowritebarrierrec
    32  func (c *sigctxt) eip() uint32 { return c.regs().eip }
    33  
    34  func (c *sigctxt) eflags() uint32  { return c.regs().eflags }
    35  func (c *sigctxt) cs() uint32      { return uint32(c.regs().cs) }
    36  func (c *sigctxt) fs() uint32      { return uint32(c.regs().fs) }
    37  func (c *sigctxt) gs() uint32      { return uint32(c.regs().gs) }
    38  func (c *sigctxt) sigcode() uint32 { return uint32(c.info.si_code) }
    39  func (c *sigctxt) sigaddr() uint32 { return c.info.si_addr }
    40  
    41  func (c *sigctxt) set_eip(x uint32)     { c.regs().eip = x }
    42  func (c *sigctxt) set_esp(x uint32)     { c.regs().esp = x }
    43  func (c *sigctxt) set_sigcode(x uint32) { c.info.si_code = int32(x) }
    44  func (c *sigctxt) set_sigaddr(x uint32) {
    45  	*(*uintptr)(add(unsafe.Pointer(c.info), 2*goarch.PtrSize)) = uintptr(x)
    46  }
    47
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