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// syscall_aix_ppc.go -- AIX 32-bit specific support
// Copyright 2017 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 syscall
import "unsafe"
//sys ptrace(request int, id int, addr uintptr, data int, buff uintptr) (val int)
//ptrace(request _C_int, id int, addr uintptr, data _C_int, buff *byte) _C_int
// AIX does not define a specific structure but instead uses separate
// ptrace calls for the different registers.
type PtraceRegs struct {
Gpr [32]uint32
Iar uint32
Msr uint32
Cr uint32
Lr uint32
Ctr uint32
Xer uint32
}
func (r *PtraceRegs) PC() uint64 { return uint64(r.Iar) }
func (r *PtraceRegs) SetPC(pc uint64) { r.Iar = uint32(pc) }
func PtraceGetRegs(pid int, regsout *PtraceRegs) (err error) {
ptrace(_PT_REGSET, pid, uintptr(unsafe.Pointer(®sout.Gpr[0])), 0, 0)
regsout.Iar = uint32(ptrace(_PT_READ_GPR, pid, 128, 0, 0))
regsout.Msr = uint32(ptrace(_PT_READ_GPR, pid, 129, 0, 0))
regsout.Cr = uint32(ptrace(_PT_READ_GPR, pid, 130, 0, 0))
regsout.Lr = uint32(ptrace(_PT_READ_GPR, pid, 131, 0, 0))
regsout.Ctr = uint32(ptrace(_PT_READ_GPR, pid, 132, 0, 0))
regsout.Xer = uint32(ptrace(_PT_READ_GPR, pid, 133, 0, 0))
return nil
}
func PtraceSetRegs(pid int, regs *PtraceRegs) (err error) {
for i := 0; i < len(regs.Gpr); i++ {
ptrace(_PT_WRITE_GPR, pid, uintptr(i), int(regs.Gpr[i]), 0)
}
ptrace(_PT_WRITE_GPR, pid, 128, int(regs.Iar), 0)
ptrace(_PT_WRITE_GPR, pid, 129, int(regs.Msr), 0)
ptrace(_PT_WRITE_GPR, pid, 130, int(regs.Cr), 0)
ptrace(_PT_WRITE_GPR, pid, 131, int(regs.Lr), 0)
ptrace(_PT_WRITE_GPR, pid, 132, int(regs.Ctr), 0)
ptrace(_PT_WRITE_GPR, pid, 133, int(regs.Xer), 0)
return nil
}
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