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 "runtime/internal/sys" 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*sys.PtrSize)) = uintptr(x) 46 } 47
