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dosbox_debmod.cpp
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/*
*/
#include <ida.hpp>
#include <err.h>
#include <idp.hpp>
#include <srarea.hpp>
#include <diskio.hpp>
#include <segment.hpp>
#include "consts.h"
#include "dosbox_debmod.h"
#include "dosbox.h"
#include "cpu.h"
#include "mem.h"
inline ea_t find_app_base();
//defined in debug.cpp
Bit32u GetAddress(Bit16u seg, Bit32u offset);
bool DEBUG_AddBreakPoint(Bit32u address, bool once);
bool DEBUG_AddMemBreakPoint(Bit32u address);
bool DEBUG_DelBreakPoint(PhysPt address);
int DEBUG_Continue(void);
Bits DEBUG_RemoteStep(void);
//server.cpp
void idados_running();
void idados_stopped();
extern debugger_t debugger;
bool debug_debugger;
//--------------------------------------------------------------------------
// Initialize static members
// TODO: Can we support this?
bool dosbox_debmod_t::reuse_broken_connections = false;
static const int T = 20;
//--------------------------------------------------------------------------
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable : 4355)
#endif
dosbox_debmod_t::dosbox_debmod_t(void)
{
}
#ifdef _MSC_VER
#pragma warning(pop)
#endif
//--------------------------------------------------------------------------
dosbox_debmod_t::~dosbox_debmod_t(void)
{
}
//--------------------------------------------------------------------------
bool idaapi dosbox_debmod_t::close_remote(void)
{
// trk.term();
return true;
}
//--------------------------------------------------------------------------
bool idaapi dosbox_debmod_t::open_remote(const char * /*hostname*/, int port_number, const char * /*password*/)
{
// if ( trk.init(port_number) )
return true;
// warning("Could not open serial port: %s", winerr(GetLastError()));
// return false;
}
//--------------------------------------------------------------------------
void dosbox_debmod_t::cleanup(void)
{
inherited::cleanup();
//proclist.clear();
dlls_to_import.clear();
dlls.clear();
stepping.clear();
//threads.clear();
events.clear();
bpts.clear();
process_name.clear();
exited = false;
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_add_bpt(bpttype_t type, ea_t ea, int len)
{
bpts_t::iterator p = bpts.find(ea);
if ( p != bpts.end() )
{
// already has a bpt at the specified address
// unfortunately the kernel may ask to set several bpts at the same addr
// FIXME: Handle 'type' here too
p->second.cnt++;
return 1;
}
printf("new breakpoint at 0x%x.\n", ea);
//ea += r_debug.base;
switch(type)
{
case BPT_EXEC :
case BPT_SOFT : DEBUG_AddBreakPoint((Bit32u)ea, false); break;
case BPT_RDWR :
case BPT_WRITE : DEBUG_AddMemBreakPoint((Bit32u)ea); break;
case BPT_READ :
// Unsupported
return 0; // failed
}
bpts.insert(std::make_pair(ea, bpt_info_t(1, 1)));
return 1; // ok
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_del_bpt(bpttype_t /*type*/, ea_t ea, const uchar * /*orig_bytes*/, int /*len*/)
{
// FIXME: Handle 'type' argument!
bpts_t::iterator p = bpts.find(ea);
if ( p == bpts.end() )
return 0; // failed
if ( --p->second.cnt == 0 )
{
int bid = p->second.bid;
bpts.erase(p);
// if ( !trk.del_bpt(bid) )
// return 0; // failed? odd
DEBUG_DelBreakPoint((PhysPt)ea);
}
return 1; // ok
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_init(bool _debug_debugger)
{
cleanup();
debug_debugger = ::debug_debugger = _debug_debugger;
return 1; //trk.ping() && trk.connect();
}
//--------------------------------------------------------------------------
void idaapi dosbox_debmod_t::dbg_term(void)
{
//trk.disconnect();
return; //trk.term();
}
//--------------------------------------------------------------------------
// input is valid only if n==0
int idaapi dosbox_debmod_t::dbg_process_get_info(int n, const char * /*input*/, process_info_t *info)
{
if ( n == 0 ) // initialize the list
{
// if ( !trk.get_process_list(proclist) )
return 0;
#if 0 // commented out because we can not match file names with process names
if ( input != NULL )
{ // remove all unmatching processes from the list
qstring inpbuf;
input = qbasename(input);
const char *end = strchr(input, '.');
if ( end != NULL )
{ // ignore everything after '.' (remove extension)
inpbuf = qstring(input, end-input);
input = inpbuf.c_str();
}
for ( int i=proclist.size()-1; i >= 0; i-- )
if ( strstr(proclist[i].name.c_str(), input) == NULL )
proclist.erase(proclist.begin()+i);
}
#endif
}
/*
if ( n >= proclist.size() )
return 0;
if ( info != NULL )
{
proclist_entry_t &pe = proclist[n];
info->pid = pe.pid;
qstrncpy(info->name, pe.name.c_str(), sizeof(info->name));
}
*/
return 1;
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_detach_process(void)
{
return 0; // can not detach
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_start_process(
const char *path,
const char *args,
const char * /*startdir*/,
int /* flags */,
const char * /*input_path*/,
uint32 /* input_file_crc32 */)
{
entry_point = (ea_t)GetAddress(SegValue(cs), reg_eip);
printf("entry_point = %x\n", entry_point);
app_base = find_app_base();
printf("app_base = %x\n", app_base);
stack = SegValue(ss);
printf("name %s \n",path);
create_process_start_event(path);
return 1;
}
//--------------------------------------------------------------------------
void dosbox_debmod_t::create_process_start_event(const char *path)
{
ea_t base;
debug_event_t ev;
base = find_app_base();
ev.eid = PROCESS_START;
ev.pid = NO_PROCESS;//pi.pid;
ev.tid = NO_PROCESS;//pi.tid;
ev.ea = BADADDR;
ev.handled = false;
qstrncpy(ev.modinfo.name, path, sizeof(ev.modinfo.name));
process_name = path;
ev.modinfo.base = app_base + 0x100; //base + PSP //entry_point; //pi.codeaddr;
ev.modinfo.size = 0;
ev.modinfo.rebase_to = app_base + 0x100; //base + PSP //entry_point;
events.enqueue(ev, IN_BACK);
}
//--------------------------------------------------------------------------
const exception_info_t *dosbox_debmod_t::find_exception_by_desc(const char *desc) const
{
qvector<exception_info_t>::const_iterator p;
for ( p=exceptions.begin(); p != exceptions.end(); ++p )
{
const char *tpl = p->desc.c_str();
size_t len = p->desc.length();
if ( strstr(tpl, "panic") != NULL )
len = strchr(tpl, ' ') - tpl; // just first word
if ( strnicmp(tpl, desc, len) == 0 )
return &*p;
}
return NULL;
}
//--------------------------------------------------------------------------
void dosbox_debmod_t::add_dll(const image_info_t &ii)
{
//dlls.insert(std::make_pair(ii.codeaddr, ii));
//dlls_to_import.insert(ii.codeaddr);
}
//--------------------------------------------------------------------------
void dosbox_debmod_t::del_dll(const char *name)
{
/*
for ( images_t::iterator p=dlls.begin(); p != dlls.end(); ++p )
{
if ( strcmp(p->second.name.c_str(), name) == 0 )
{
dlls_to_import.erase(p->first);
dlls.erase(p);
return;
}
}
msg("Unknown DLL %s got unloaded\n", name);
*/
}
//--------------------------------------------------------------------------
/*
bool metrotrk_t::handle_notification(uchar seq, void *ud) // plugin version
{
dosbox_debmod_t &dm = *(dosbox_debmod_t *)ud;
int i = 0;
bool suspend = true;
debug_event_t ev;
uchar type = extract_byte(i);
switch ( type )
{
case TrkOSNotifyCreated:
{
image_info_t ii;
uint16 item = extract_int16(i);
QASSERT(item == TrkOSDLLItem);
qnotused(item);
ii.pid = extract_int32(i);
ii.tid = extract_int32(i);
ii.codeaddr = extract_int32(i);
ii.dataaddr = extract_int32(i);
ii.name = extract_pstr(i);
ev.eid = LIBRARY_LOAD;
ev.pid = ii.pid;
ev.tid = ii.tid;
ev.ea = BADADDR;
ev.handled = false;
qstrncpy(ev.modinfo.name, ii.name.c_str(), sizeof(ev.modinfo.name));
ev.modinfo.base = ii.codeaddr;
ev.modinfo.size = 0;
ev.modinfo.rebase_to = BADADDR;
dm.add_dll(ii);
}
break;
case TrkOSNotifyDeleted:
{
uint16 item = extract_int16(i);
if ( debug_debugger )
msg("NotifyDeleted Item: %s\n", get_os_item_name(item));
switch ( item )
{
case TrkOSProcessItem:
{
uint32 exitcode = extract_int32(i);
uint32 pid = extract_int32(i);
ev.eid = PROCESS_EXIT;
ev.pid = pid;
ev.tid = -1;
ev.ea = BADADDR;
ev.handled = false;
ev.exit_code = exitcode;
tpi.pid = -1;
dm.exited = true;
}
break;
case TrkOSDLLItem:
{
int32 pid = extract_int32(i);
int32 tid = extract_int32(i);
qstring name = extract_pstr(i);
ev.eid = LIBRARY_UNLOAD;
ev.pid = pid;
ev.tid = tid;
ev.ea = BADADDR;
ev.handled = false;
qstrncpy(ev.info, name.c_str(), sizeof(ev.info));
dm.del_dll(name.c_str());
}
break;
default:
INTERR(); // not implemented
}
}
break;
case TrkNotifyStopped:
{
ev.ea = extract_int32(i);
ev.pid = extract_int32(i);
ev.tid = extract_int32(i);
qstring desc = extract_pstr(i);
if ( debug_debugger )
{
msg(" Current PC: %08X\n", ev.ea);
msg(" Process ID: %08X\n", ev.pid);
msg(" Thread ID : %08X\n", ev.tid);
msg(" Name : %s\n", desc.c_str());
}
ev.handled = false;
// there are various reasons why the app may stop
if ( desc.empty() ) // bpt
{
// bpt exists?
if ( dm.bpts.find(ev.ea) != dm.bpts.end() )
{
ev.eid = BREAKPOINT;
ev.bpt.hea = BADADDR;
ev.bpt.kea = BADADDR;
}
else // no, this must be a single step
{
ev.eid = STEP;
}
break;
}
// an exception
ev.eid = EXCEPTION;
ev.exc.ea = BADADDR;
qstrncpy(ev.exc.info, desc.c_str(), sizeof(ev.exc.info));
// trk returns the exception description, but no code.
// convert the description to the code
const exception_info_t *ei = dm.find_exception_by_desc(desc.c_str());
if ( ei != NULL )
{
int code = ei->code;
ev.exc.code = code;
ev.exc.can_cont = code != 20 // abort
&& code != 21 // kill
&& code < 25; // regular exception
ev.handled = ei->handle();
suspend = ei->break_on();
}
else
{
ev.exc.code = 25; // just something
ev.exc.can_cont = true;
}
}
break;
default:
// unexpected packet?!
// msg("Unexpected packet %d\n", type);
return false;
}
// send reply
if ( !dm.exited )
send_reply_ok(seq);
if ( !suspend )
dm.dbg_continue_after_event(&ev);
else
dm.events.enqueue(ev, IN_BACK);
return true;
}
*/
//--------------------------------------------------------------------------
gdecode_t idaapi dosbox_debmod_t::dbg_get_debug_event(debug_event_t *event, int timeout_ms)
{
if ( event == NULL )
return GDE_NO_EVENT;
while ( true )
{
// are there any pending events?
if ( events.retrieve(event) )
{
debdeb("GDE: %s\n", debug_event_str(event));
return GDE_ONE_EVENT;
}
// no pending events, check the target
// trk.poll_for_event(ida_is_idle ? TIMEOUT : 0);
if ( events.empty() )
break;
}
return GDE_NO_EVENT;
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_attach_process(pid_t pid, int /*event_id*/, int /* flags */)
{
/*
if ( !trk.attach_process(pid) )
return 0;
// get information on the existing threads
thread_list_t tlist;
trk.get_thread_list(pid, tlist);
if ( tlist.empty() )
{
trk.disconnect();
return 0; // something is wrong
}
pi.pid = pid;
pi.tid = tlist[0].tid;
pi.codeaddr = (uint32)BADADDR; // unknown :(
pi.dataaddr = (uint32)BADADDR;
trk.tpi = pi;
create_process_start_event(tlist[0].name.c_str());
// create fake PROCESS_ATTACH/THREAD_START event for each thread
for ( ssize_t i=tlist.size()-1; i >= 0; i-- )
{
debug_event_t ev;
ev.eid = THREAD_START;
ev.pid = pid;
ev.tid = tlist[i].tid;
ev.ea = BADADDR;
ev.handled = false;
if ( i == 0 )
{
ev.eid = PROCESS_ATTACH;
qstrncpy(ev.modinfo.name, tlist[i].name.c_str(), sizeof(ev.modinfo.name));
process_name = ev.modinfo.name;
ev.modinfo.base = BADADDR; // unknown :(
ev.modinfo.size = 0;
ev.modinfo.rebase_to = BADADDR;
}
events.enqueue(ev, IN_BACK);
}
*/
return 1;
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_prepare_to_pause_process(void)
{
debug_event_t ev;
ev.eid = NO_EVENT;
ev.pid = NO_PROCESS;
ev.tid = NO_PROCESS;
ev.bpt.hea = BADADDR; //addr; //BADADDR; //r_debug.base - addr; //BADADDR; //addr;//r_debug.base - addr;
ev.bpt.kea = BADADDR;//(ea_t)reg_eip;
ev.ea = (ea_t)GetAddress(SegValue(cs), reg_eip);
ev.handled = true;
ev.exc.code = 0;
ev.exc.can_cont = true;
ev.exc.ea = BADADDR;
events.enqueue(ev, IN_BACK);
idados_stopped();
return 1; //trk.suspend_thread(pi.pid, pi.tid);
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_exit_process(void)
{
// if ( trk.current_pid() == -1 )
// return true; // already terminated
debug_event_t ev;
ev.eid = PROCESS_EXIT;
ev.tid = NO_PROCESS;
ev.pid = NO_PROCESS;
ev.ea = BADADDR;
ev.handled = false;
ev.exit_code = 0;
events.enqueue(ev, IN_BACK);
return 1; //trk.terminate_process(pi.pid);
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_continue_after_event(const debug_event_t *event)
{
if ( exited
|| event->eid == LIBRARY_UNLOAD // TRK doesn't need this?
|| event->eid == THREAD_START // fake event - btw, how do we detect thread creation?
|| event->eid == PROCESS_EXIT ) // After EXIT TRK does not accept 'continue'
{
printf("bad event->eid\n");
return 1;
}
// if there are pending events, do not resume the app
// in fact, the whole debugger logic is flawed.
// it must be ready for a bunch of events, process all of them
// and only after that resume the whole application or part of it.
// fixme: rewrite event handling in the debugger
if ( !events.empty() )
{
printf("Events in the event queue.\n");
return 1;
}
/*
// was single stepping asked?
stepping_t::iterator p = stepping.find(event->tid);
if ( p != stepping.end() )
{
stepping.erase(p);
ea_t end = event->ea + 0;//get_item_size(event->ea);
printf("stepping.\n");
return 1; //trk.step_thread(event->pid, event->tid, (int32)event->ea, (int32)end, true);
}
//int tid = event->tid == -1 ? pi.tid : event->tid;
*/
//DEBUG_Continue();
idados_running();
return 1; //trk.resume_thread(event->pid, tid);
}
//--------------------------------------------------------------------------
// currently this function doesn't work because the dlls are usually
// not present. besides, we will have to implement the import_dll() function
bool dosbox_debmod_t::import_dll_to_database(ea_t imagebase)
{
/*
images_t::iterator p = dlls.find(imagebase);
if ( p == dlls.end() )
{
derror("import_dll_to_database: can't find dll name");
return false;
}
if ( imagebase >= 0x80000000 )
return false; // we have no access to system memory anyway
const char *dllname = p->second.name.c_str();
linput_t *li = open_linput(dllname, false);
if ( li == NULL )
{
return false;
}
// prepare nice name prefix for exported functions names
char prefix[MAXSTR];
qstrncpy(prefix, qbasename(dllname), sizeof(prefix));
char *ptr = strrchr(prefix, '.');
if (ptr != NULL)
*ptr = '\0';
bool ok = false;
// bool ok = import_dll(prefix, li, imagebase, (void *)this);
close_linput(li);
*/
return false; //ok;
}
//--------------------------------------------------------------------------
void idaapi dosbox_debmod_t::dbg_stopped_at_debug_event(void)
{
// we will take advantage of this event to import information
// about the exported functions from the loaded dlls
/*
clear_debug_names();
for ( easet_t::iterator p=dlls_to_import.begin(); p != dlls_to_import.end(); )
{
import_dll_to_database(*p);
dlls_to_import.erase(p++);
}
*/
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_thread_suspend(thid_t tid)
{
return 1; //trk.suspend_thread(pi.pid, tid);
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_thread_continue(thid_t tid)
{
return 1; //trk.resume_thread(pi.pid, tid);
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_set_resume_mode(thid_t tid, resume_mode_t resmod)
{
if ( resmod != RESMOD_INTO )
return 0; // not supported
stepping[tid] = true;
dosbox_step_ret = DEBUG_RemoteStep(); //fixme step return.
debug_event_t ev;
ev.eid = STEP;
ev.pid = NO_PROCESS;
ev.tid = NO_PROCESS;
ev.ea =(ea_t)GetAddress(SegValue(cs),reg_ip);
ev.handled = false;
events.enqueue(ev, IN_BACK);
return 1;
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_read_registers(thid_t tid, int clsmask, regval_t *values)
{
// uint32 rvals[17];
// QASSERT(n > 0 && n <= qnumber(rvals));
// memset(values, 0, n * sizeof(regval_t)); // force null bytes at the end of floating point registers.
// we need this to properly detect register modifications,
// as we compare the whole regval_t structure !
if ( (clsmask & X86_RC_GENERAL) != 0 ) {
values[R_EAX ].ival = (uint64)reg_eax;
values[R_EBX ].ival = (uint64)reg_ebx;
values[R_ECX ].ival = (uint64)reg_ecx;
values[R_EDX ].ival = (uint64)reg_edx;//GetAddress(SegValue(ds), (ulong)reg_edx);//(ulong)reg_edx;
values[R_ESI ].ival = (uint64)reg_esi;
values[R_EDI ].ival = (uint64)reg_edi;
values[R_EBP ].ival = (uint64)reg_ebp;
values[R_ESP ].ival = (uint64)reg_esp;
values[R_EIP ].ival = (uint64)reg_eip;
// values[R_ESP ].ival = GetAddress(SegValue(ss), (Bit32u)reg_esp);
// values[R_EIP ].ival = GetAddress(SegValue(cs), (Bit32u)reg_eip);
values[R_EFLAGS].ival = (uint64)reg_flags;
}
if ( (clsmask & X86_RC_SEGMENTS) != 0 ) {
values[R_CS ].ival = (uint64)SegValue(cs);
values[R_DS ].ival = (uint64)SegValue(ds);
values[R_ES ].ival = (uint64)SegValue(es);
values[R_FS ].ival = (uint64)SegValue(fs);
values[R_GS ].ival = (uint64)SegValue(gs);
values[R_SS ].ival = (uint64)SegValue(ss);
}
// TODO: clear registers for X86_RC_XMM, X86_RC_FPU, X86_RC_MMX
printf("AX = %08x",(uint64)values[R_EAX ].ival);
printf(" BX = %08x",(uint64)values[R_EBX ].ival);
printf(" CX = %08x",(uint64)values[R_ECX ].ival);
printf(" DX = %08x\n",(uint64)values[R_EDX ].ival);
printf("SI = %08x",(uint64)values[R_ESI ].ival);
printf(" DI = %08x",(uint64)values[R_EDI ].ival);
printf(" BP = %08x",(uint64)values[R_EBP ].ival);
printf(" SP = %08x\n",(uint64)values[R_ESP ].ival);
printf("IP = %08x",(uint64)values[R_EIP ].ival);
printf(" Flags = %08x\n",(uint64)values[R_EFLAGS].ival);
printf("CS = %08x",(uint64)values[R_CS ].ival);
printf(" SS = %08x",(uint64)values[R_SS ].ival);
printf(" DS = %08x",(uint64)values[R_DS ].ival);
printf(" ES = %08x\n",(uint64)values[R_ES ].ival);
printf("FS = %08x",(uint64)values[R_FS ].ival);
printf(" GS = %08x\n",(uint64)values[R_GS ].ival);
/*
if ( exited || !trk.read_regs(pi.pid, tid, 0, n, rvals) )
return 0;
for ( int i=0; i < n; i++ )
{
debdeb("%cR%d: %08X", i==8 ? '\n' : ' ', i, rvals[i]);
values[i].ival = rvals[i];
}
debdeb("\n");
// if we read the PC and PSW values, check that our virtual register T
// and real PSW at that address are the same. If not, copy real T to our
// virtual register T
if ( n == qnumber(rvals) ) // PC and PSW are read?
{
ea_t pc = rvals[15];
int real_t = (rvals[16] & 0x20) != 0;
int virt_t = getSR(pc, T) != 0;
if ( real_t != virt_t )
splitSRarea1(pc, T, real_t, SR_autostart);
}
*/
return 1;
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_write_register(thid_t tid, int reg_idx, const regval_t *value)
{
uint32 v = (uint32)value->ival;
printf("write_reg R%d <- %08X\n", reg_idx, v);
switch(reg_idx)
{
case R_EAX : reg_eax = value->ival; break;
case R_EBX : reg_ebx = value->ival; break;
case R_ECX : reg_ecx = value->ival; break;
case R_EDX : reg_edx = value->ival; break;
case R_ESI : reg_esi = value->ival; break;
case R_EDI : reg_edi = value->ival; break;
case R_EBP : reg_ebp = value->ival; break;
case R_ESP : reg_esp = value->ival; break;
//case R_EIP : reg_eip = value->ival; break;
case R_EFLAGS : reg_flags = value->ival; break;
case R_CS : SegSet16(cs, value->ival); break;
case R_DS : SegSet16(ds, value->ival); break;
case R_ES : SegSet16(es, value->ival); break;
case R_FS : SegSet16(fs, value->ival); break;
case R_GS : SegSet16(gs, value->ival); break;
case R_SS : SegSet16(ss, value->ival); break;
default : break;
}
return 1;//trk.write_regs(pi.pid, tid, reg_idx, 1, &v);
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_get_memory_info(meminfo_vec_t &miv)
{
/*
miv->startEA = 0x0; //0;//r_debug.base; //(ea_t)GetAddress(0,0);
miv->endEA = (ea_t)GetAddress(SegValue(ds),0); // 0x1970;
miv->endEA--;
strcpy(miv->name, "ROM");
miv->sclass[0] = '\0';
miv->perm = 0 | SEGPERM_READ;
miv++;
miv->startEA = (ea_t)GetAddress(SegValue(ds),0); // 0x1970;
miv->endEA = (ea_t)GetAddress(SegValue(cs),0); // 0x1a70; //(ea_t)GetAddress(SegValue(ds),0);
miv->endEA--;
strcpy(miv->name, "PSP");
miv->sclass[0] = '\0';
miv->perm = 0 | SEGPERM_READ;
miv++;
miv->startEA = (ea_t)GetAddress(SegValue(cs),0); //0x1a70; //(ea_t)GetAddress(SegValue(ds), 0); //GetAddress(0xa000,0);
miv->endEA = (ea_t)GetAddress(SegValue(ss), 0); // 0x1c20; //GetAddress(0xf000,0) - 1;
miv->endEA--;
strcpy(miv->name, ".text");
miv->sclass[0] = '\0';
miv->perm = 0 | SEGPERM_READ | SEGPERM_WRITE | SEGPERM_EXEC;
miv++;
miv->startEA = (ea_t)GetAddress(SegValue(ss),0); //0x1a70; //(ea_t)GetAddress(SegValue(ds), 0); //GetAddress(0xa000,0);
miv->endEA = (ea_t)GetAddress(SegValue(ss), 0xffff); //reg_sp); // 0x1c20; //GetAddress(0xf000,0) - 1;
miv->endEA--;
strcpy(miv->name, ".stack");
miv->sclass[0] = '\0';
miv->perm = 0 | SEGPERM_READ | SEGPERM_WRITE;
miv++;
miv->startEA = (ea_t)GetAddress(0xf100,0);
miv->endEA = (ea_t)GetAddress(0xf100, 0x1000);
miv->endEA--;
strcpy(miv->name, ".callbacks");
miv->sclass[0] = '\0';
miv->perm = 0 | SEGPERM_READ | SEGPERM_WRITE | SEGPERM_EXEC;
miv++;
*/
static bool first_run = true;
if(!first_run)
return -2;
// Read from PSP
int last_user_seg = mem_readw(GetAddress(app_base>>4, 0x2));
printf("last user seg = %d\n", last_user_seg);
memory_info_t *mi = &miv.push_back();
mi->startEA = 0x0;
mi->endEA = 0x400;
mi->endEA--;
mi->name = "INT_TABLE";
mi->bitness = 0;
mi->perm = 0 | SEGPERM_READ | SEGPERM_WRITE;
mi->sbase = 0;
printf("mi = %x,%x\n",mi->startEA, mi->endEA);
mi = &miv.push_back();
mi->startEA = 0x400;
mi->endEA = 0x600;
mi->endEA--;
mi->name = "BIOS";
mi->bitness = 0;
mi->perm = 0 | SEGPERM_READ;
mi->sbase = 0x40;
printf("mi = %x,%x\n",mi->startEA, mi->endEA);
mi = &miv.push_back();
mi->startEA = 0x600;
mi->endEA = app_base;
mi->endEA--;
mi->name = "DOS?";
mi->bitness = 0;
mi->perm = 0 | SEGPERM_READ;
mi->sbase = 0x60;
printf("mi = %x,%x\n",mi->startEA, mi->endEA);
mi = &miv.push_back();
mi->startEA = app_base;
mi->endEA = app_base + 0x100;
mi->endEA--;
mi->name = "PSP";
mi->bitness = 0;
mi->perm = 0 | SEGPERM_READ;
mi->sbase = app_base>>4;
printf("mi = %x,%x\n",mi->startEA, mi->endEA);
mi = &miv.push_back();
mi->startEA = app_base + 0x200;
mi->endEA = (ea_t)GetAddress(last_user_seg, 0x10);
mi->endEA--;
mi->name = ".text"; // Not the best name; it also covers data/stack/...
mi->bitness = 0;
mi->perm = 0 | SEGPERM_READ | SEGPERM_WRITE | SEGPERM_EXEC;
mi->sbase = app_base>>4;
printf("mi = %x,%x\n",mi->startEA, mi->endEA);
/*
// IDA seems to take care of this itself
mi = &miv.push_back();
mi->startEA = (ea_t)GetAddress(SegValue(ss),0); //0x1a70; //(ea_t)GetAddress(SegValue(ds), 0); //GetAddress(0xa000,0);
mi->endEA = (ea_t)GetAddress(SegValue(ss), 0xffff); //reg_sp); // 0x1c20; //GetAddress(0xf000,0) - 1;
mi->endEA--;
mi->name = ".stack";
mi->bitness = 0;
mi->perm = 0 | SEGPERM_READ | SEGPERM_WRITE;
mi->sbase = SegValue(ss);
printf("mi = %x,%x\n",mi->startEA, mi->endEA);
*/
mi = &miv.push_back();
mi->startEA = 0xA0000;
mi->endEA = 0xB0000;
mi->endEA--;
mi->name = "A000";
mi->bitness = 0;
mi->perm = 0 | SEGPERM_READ;
mi->sbase = 0xa000;
printf("mi = %x,%x\n",mi->startEA, mi->endEA);
mi = &miv.push_back();
mi->startEA = 0xB0000;
mi->endEA = 0xB8000;
mi->endEA--;
mi->name = "B000";
mi->bitness = 0;
mi->perm = 0 | SEGPERM_READ | SEGPERM_WRITE;
mi->sbase = 0xb000;
printf("mi = %x,%x\n",mi->startEA, mi->endEA);
mi = &miv.push_back();
mi->startEA = 0xB8000;
mi->endEA = 0xC0000;
mi->endEA--;
mi->name = "B800";
mi->bitness = 0;
mi->perm = 0 | SEGPERM_READ |SEGPERM_WRITE;
mi->sbase = 0xb800;
printf("mi = %x,%x\n",mi->startEA, mi->endEA);
mi = &miv.push_back();
mi->startEA = 0xC0000;
mi->endEA = 0xC1000;
mi->endEA--;
mi->name = "VIDBIOS";
mi->bitness = 0;
mi->perm = 0 | SEGPERM_READ | SEGPERM_EXEC;
mi->sbase = 0xc000;
printf("mi = %x,%x\n",mi->startEA, mi->endEA);
mi = &miv.push_back();
mi->startEA = (ea_t)GetAddress(0xf100,0);
mi->endEA = (ea_t)GetAddress(0xf100, 0x1000);
mi->endEA--;
mi->name = ".callbacks";
mi->perm = 0 | SEGPERM_READ | SEGPERM_WRITE | SEGPERM_EXEC;
mi->sbase = 0xf100;
printf("mi = %x,%x\n",mi->startEA, mi->endEA);
printf("CS:IP = %04x:%04x\n",SegValue(cs), reg_eip);
first_run = false;
return 1;
}
//--------------------------------------------------------------------------
ssize_t idaapi dosbox_debmod_t::dbg_read_memory(ea_t ea, void *buffer, size_t size)
{
int i;
PhysPt addr = (PhysPt)ea;
uchar *buf;
buf = (uchar *)buffer;
//addr = addr + r_debug.base;
for(i=0;i<size;i++)
{
buf[i] = mem_readb(addr);
// printf("%02x,",buf[i]);
addr++;
}
printf("dbg_read_memory @ %x, size=%d\n", ea, size);
return size;
}
//--------------------------------------------------------------------------
ssize_t idaapi dosbox_debmod_t::dbg_write_memory(ea_t ea, const void *buffer, size_t size)
{
if ( ea == 0 )
return 0;
for(int i=0;i<size;i++)
mem_writeb(ea + i, ((Bit8u *)buffer)[i]);
return size;
}
//--------------------------------------------------------------------------
int idaapi dosbox_debmod_t::dbg_open_file(const char *file, uint32 *fsize, bool readonly)
{
/*
if ( fsize != NULL )
*fsize = 0;
int h = trk.open_file(file, readonly ? TrkFileOpenRead : TrkFileOpenCreate);
if ( h > 0 )