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unit FpDbgLinuxExtra;
{$mode objfpc}{$H+}
interface
uses
Classes,
BaseUnix,
SysUtils;
const
PTRACE_TRACEME = 0;
PTRACE_PEEKTEXT = 1;
PTRACE_PEEKDATA = 2;
PTRACE_PEEKUSR = 3;
PTRACE_POKETEXT = 4;
PTRACE_POKEDATA = 5;
PTRACE_POKEUSR = 6;
PTRACE_CONT = 7;
PTRACE_KILL = 8;
PTRACE_SINGLESTEP = 9;
{$ifdef linux}
PTRACE_GETREGS = 12;
PTRACE_SETREGS = 13;
PTRACE_GETFPREGS = 14;
PTRACE_SETFPREGS = 15;
PTRACE_SETOPTIONS = $4200;
PTRACE_GETEVENTMSG = $4201;
PTRACE_GETREGSET = $4204;
PTRACE_SETREGSET = $4205;
PTRACE_EVENT_FORK = 1;
PTRACE_EVENT_VFORK = 2;
PTRACE_EVENT_CLONE = 3;
PTRACE_EVENT_EXEC = 4;
PTRACE_EVENT_VFORK_DONE = 5;
PTRACE_EVENT_EXIT = 6;
PTRACE_EVENT_SECCOMP = 7;
PTRACE_EVENT_STOP = 128;
PTRACE_O_TRACEFORK = 1 << PTRACE_EVENT_FORK;
PTRACE_O_TRACEVFORK = 1 << PTRACE_EVENT_VFORK;
PTRACE_O_TRACECLONE = 1 << PTRACE_EVENT_CLONE;
{$endif linux}
PTRACE_ATTACH = 16;
RIP = 16;
function fpPTrace(ptrace_request: cint; pid: TPid; addr: Pointer; data: pointer): PtrInt;
implementation
type
// all platforms, cint=32-bit.
// On platforms with off_t =64-bit, people should
// use int64, and typecast all calls that don't
// return off_t to cint.
{$ifdef cpux86_64}
TSysResult = int64;
TSysParam = int64;
{$else}
TSysResult = cint32;
TSysParam = cint32;
{$endif cpux86_64}
{$ifdef darwin}
Function ptrace(ptrace_request: cInt; pid: TPid; addr:pointer; data:pointer): cint; cdecl; external clib name 'ptrace';
{$endif darwin}
{$ifdef linux}
function Do_SysCall(sysnr,param1,param2,param3,param4:TSysParam):TSysResult; {$ifdef cpui386}register;{$endif} external name 'FPC_SYSCALL4';
const
{$ifdef cpux86_64}
syscall_nr_ptrace = 101;
{$else}
syscall_nr_ptrace = 26;
{$endif}
{$endif linux}
function fpPTrace(ptrace_request: cint; pid: TPid; addr: Pointer; data: pointer): PtrInt;
{$ifdef linux}
var
res : TSysResult;
ret : PtrInt;
{$endif linux}
begin
{$ifdef darwin}
result := ptrace(ptrace_request, pid, addr, data);
{$endif}
{$ifdef linux}
if (ptrace_request > 0) and (ptrace_request < 4) then
data := @ret;
res := do_syscall(TSysParam(syscall_nr_ptrace), TSysParam(ptrace_request), TSysParam(pid), TSysParam(addr), TSysParam(data));
if (res >= 0) and (ptrace_request > 0) and (ptrace_request < 4) then
begin
errno:=0;
result := ret;
end
else
result := res;
{$endif linux}
end;
end.
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