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 { 20 return (*sigcontext)(unsafe.Pointer(&(*ucontext)(c.ctxt).uc_mcontext)) 21 } 22 23 func (c *sigctxt) rax() uint64 { return c.regs().rax } 24 func (c *sigctxt) rbx() uint64 { return c.regs().rbx } 25 func (c *sigctxt) rcx() uint64 { return c.regs().rcx } 26 func (c *sigctxt) rdx() uint64 { return c.regs().rdx } 27 func (c *sigctxt) rdi() uint64 { return c.regs().rdi } 28 func (c *sigctxt) rsi() uint64 { return c.regs().rsi } 29 func (c *sigctxt) rbp() uint64 { return c.regs().rbp } 30 func (c *sigctxt) rsp() uint64 { return c.regs().rsp } 31 func (c *sigctxt) r8() uint64 { return c.regs().r8 } 32 func (c *sigctxt) r9() uint64 { return c.regs().r9 } 33 func (c *sigctxt) r10() uint64 { return c.regs().r10 } 34 func (c *sigctxt) r11() uint64 { return c.regs().r11 } 35 func (c *sigctxt) r12() uint64 { return c.regs().r12 } 36 func (c *sigctxt) r13() uint64 { return c.regs().r13 } 37 func (c *sigctxt) r14() uint64 { return c.regs().r14 } 38 func (c *sigctxt) r15() uint64 { return c.regs().r15 } 39 40 //go:nosplit 41 //go:nowritebarrierrec 42 func (c *sigctxt) rip() uint64 { return c.regs().rip } 43 44 func (c *sigctxt) rflags() uint64 { return c.regs().eflags } 45 func (c *sigctxt) cs() uint64 { return uint64(c.regs().cs) } 46 func (c *sigctxt) fs() uint64 { return uint64(c.regs().fs) } 47 func (c *sigctxt) gs() uint64 { return uint64(c.regs().gs) } 48 func (c *sigctxt) sigcode() uint64 { return uint64(c.info.si_code) } 49 func (c *sigctxt) sigaddr() uint64 { return c.info.si_addr } 50 51 func (c *sigctxt) set_rip(x uint64) { c.regs().rip = x } 52 func (c *sigctxt) set_rsp(x uint64) { c.regs().rsp = x } 53 func (c *sigctxt) set_sigcode(x uint64) { c.info.si_code = int32(x) } 54 func (c *sigctxt) set_sigaddr(x uint64) { 55 *(*uintptr)(add(unsafe.Pointer(c.info), 2*sys.PtrSize)) = uintptr(x) 56 } 57
