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 5package runtime 6 7import "unsafe" 8 9type sigctxt struct { 10 info *siginfo 11 ctxt unsafe.Pointer 12} 13 14//go:nosplit 15//go:nowritebarrierrec 16func (c *sigctxt) regs() *mcontextt { return &(*ucontextt)(c.ctxt).uc_mcontext } 17 18func (c *sigctxt) eax() uint32 { return c.regs().__gregs[_REG_EAX] } 19func (c *sigctxt) ebx() uint32 { return c.regs().__gregs[_REG_EBX] } 20func (c *sigctxt) ecx() uint32 { return c.regs().__gregs[_REG_ECX] } 21func (c *sigctxt) edx() uint32 { return c.regs().__gregs[_REG_EDX] } 22func (c *sigctxt) edi() uint32 { return c.regs().__gregs[_REG_EDI] } 23func (c *sigctxt) esi() uint32 { return c.regs().__gregs[_REG_ESI] } 24func (c *sigctxt) ebp() uint32 { return c.regs().__gregs[_REG_EBP] } 25func (c *sigctxt) esp() uint32 { return c.regs().__gregs[_REG_UESP] } 26 27//go:nosplit 28//go:nowritebarrierrec 29func (c *sigctxt) eip() uint32 { return c.regs().__gregs[_REG_EIP] } 30 31func (c *sigctxt) eflags() uint32 { return c.regs().__gregs[_REG_EFL] } 32func (c *sigctxt) cs() uint32 { return c.regs().__gregs[_REG_CS] } 33func (c *sigctxt) fs() uint32 { return c.regs().__gregs[_REG_FS] } 34func (c *sigctxt) gs() uint32 { return c.regs().__gregs[_REG_GS] } 35func (c *sigctxt) sigcode() uint32 { return uint32(c.info._code) } 36func (c *sigctxt) sigaddr() uint32 { 37 return *(*uint32)(unsafe.Pointer(&c.info._reason[0])) 38} 39 40func (c *sigctxt) set_eip(x uint32) { c.regs().__gregs[_REG_EIP] = x } 41func (c *sigctxt) set_esp(x uint32) { c.regs().__gregs[_REG_UESP] = x } 42func (c *sigctxt) set_sigcode(x uint32) { c.info._code = int32(x) } 43func (c *sigctxt) set_sigaddr(x uint32) { 44 *(*uint32)(unsafe.Pointer(&c.info._reason[0])) = x 45} 46