src/runtime/signal_fuchsia_amd64.go

// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package runtime

const (
	// Bogus definitions to allow signal_amd64 to build.
	_SIGFPE     = 0x1
	_FPE_INTDIV = 0x01
)

type sigctxt struct {
	regs generalRegs
}

func (c *sigctxt) rax() uint64 { return c.regs.rax }
func (c *sigctxt) rbx() uint64 { return c.regs.rbx }
func (c *sigctxt) rcx() uint64 { return c.regs.rcx }
func (c *sigctxt) rdx() uint64 { return c.regs.rdx }
func (c *sigctxt) rdi() uint64 { return c.regs.rdi }
func (c *sigctxt) rsi() uint64 { return c.regs.rsi }
func (c *sigctxt) rbp() uint64 { return c.regs.rbp }
func (c *sigctxt) rsp() uint64 { return c.regs.rsp }
func (c *sigctxt) r8() uint64  { return c.regs.r8 }
func (c *sigctxt) r9() uint64  { return c.regs.r9 }
func (c *sigctxt) r10() uint64 { return c.regs.r10 }
func (c *sigctxt) r11() uint64 { return c.regs.r11 }
func (c *sigctxt) r12() uint64 { return c.regs.r12 }
func (c *sigctxt) r13() uint64 { return c.regs.r13 }
func (c *sigctxt) r14() uint64 { return c.regs.r14 }
func (c *sigctxt) r15() uint64 { return c.regs.r15 }

//go:nosplit
//go:nowritebarrierrec
func (c *sigctxt) rip() uint64 { return c.regs.rip }

func (c *sigctxt) rflags() uint64 { return c.regs.rflags }

// TODO brunodalbo these only seem to be used to dump regs, what's the right
// value here?
func (c *sigctxt) cs() uint64      { return c.regs.fs_base }
func (c *sigctxt) fs() uint64      { return c.regs.fs_base }
func (c *sigctxt) gs() uint64      { return c.regs.fs_base }
func (c *sigctxt) sigaddr() uint64 { return 0 }

func (c *sigctxt) set_rip(x uint64) { c.regs.rip = x }
func (c *sigctxt) set_rsp(x uint64) { c.regs.rsp = x }

func (c *sigctxt) prepareExceptionPanic() {
	// NOTE(brunodalbo) we're passing the wrong g into preparePanic here for
	// simplicity. This is not entirely correct, as prepare panic wants the g
	// from the panicking thread. It should be fine for amd64 though, as g is
	// only used in preparePanic to improve the traceback in case we're in a cgo
	// call.
	c.preparePanic(0, getg())
}