go-sandbox/ptracer/context_linux_amd64.go
2020-02-18 21:55:32 -05:00

60 lines
1.1 KiB
Go

package ptracer
import (
"syscall"
unix "golang.org/x/sys/unix"
)
// SyscallNo get current syscall no
func (c *Context) SyscallNo() uint {
return uint(c.regs.Orig_rax)
}
// Arg0 gets the arg0 for the current syscall
func (c *Context) Arg0() uint {
return uint(c.regs.Rdi)
}
// Arg1 gets the arg1 for the current syscall
func (c *Context) Arg1() uint {
return uint(c.regs.Rsi)
}
// Arg2 gets the arg2 for the current syscall
func (c *Context) Arg2() uint {
return uint(c.regs.Rdx)
}
// Arg3 gets the arg3 for the current syscall
func (c *Context) Arg3() uint {
return uint(c.regs.R10)
}
// Arg4 gets the arg4 for the current syscall
func (c *Context) Arg4() uint {
return uint(c.regs.R8)
}
// Arg5 gets the arg5 for the current syscall
func (c *Context) Arg5() uint {
return uint(c.regs.R9)
}
// SetReturnValue set the return value if skip the syscall
func (c *Context) SetReturnValue(retval int) {
c.regs.Rax = uint64(retval)
}
func (c *Context) skipSyscall() error {
c.regs.Orig_rax = ^uint64(0) //-1
return syscall.PtraceSetRegs(c.Pid, &c.regs)
}
func getIovec(base *byte, l int) unix.Iovec {
return unix.Iovec{
Base: base,
Len: uint64(l),
}
}