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// syscall_linux_s390x.go -- GNU/Linux s390x specific support
// Copyright 2014 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.
// The PtraceRegs struct generated for go looks like this:
//
// type PtraceRegs struct
// {
// Psw _psw_t;
// Gprs [15+1]uint64;
// Acrs [15+1]uint32;
// Orig_gpr2 uint64;
// Fp_regs _s390_fp_regs;
// Per_info _per_struct;
// Ieee_instruction_pointer uint64;
// }
//
// The GETREGSET/SETREGSET ptrace commands on S/390 only read/write
// the content up to Orig_gpr2. Hence, we use
// PEEKUSR_AREA/POKEUSR_AREA like GDB does.
package syscall
import "unsafe"
func (r *PtraceRegs) PC() uint64 { return r.Psw.addr }
func (r *PtraceRegs) SetPC(pc uint64) { r.Psw.addr = pc }
func PtraceGetRegs(pid int, regs *PtraceRegs) (err error) {
parea := _ptrace_area{
_sizeof_ptrace_area,
0,
uint64(uintptr(unsafe.Pointer(regs))),
}
return ptrace(PTRACE_PEEKUSR_AREA, pid, uintptr(unsafe.Pointer(&parea)), 0)
}
func PtraceSetRegs(pid int, regs *PtraceRegs) (err error) {
parea := _ptrace_area{
_sizeof_ptrace_area,
0,
uint64(uintptr(unsafe.Pointer(regs))),
}
return ptrace(PTRACE_POKEUSR_AREA, pid, uintptr(unsafe.Pointer(&parea)), 0)
}
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