trap_retval ReqSplit_cmd( void )
{
char *cmd;
char *start;
split_cmd_ret *ret;
unsigned len;
cmd = GetInPtr( sizeof( split_cmd_req ) );
ret = GetOutPtr( 0 );
ret->parm_start = 0;
start = cmd;
len = GetTotalSize() - sizeof( split_cmd_req );
while( len != 0 ) {
switch( *cmd ) {
case '\0':
case ' ':
case '\t':
ret->parm_start = 1;
len = 0;
continue;
}
++cmd;
--len;
}
ret->parm_start += cmd - start;
ret->cmd_end = cmd - start;
CONV_LE_16( ret->cmd_end );
CONV_LE_16( ret->parm_start );
return( sizeof( *ret ) );
}
trap_retval RemoteGet( void *data, trap_elen len )
{
unsigned_16 rec_len;
len = len;
_DBG_NET(("RemoteGet\r\n"));
if( IS_VALID_SOCKET( data_socket ) ) {
int size;
size = recvData( &rec_len, sizeof( rec_len ) );
#ifdef __RDOS__
while( size == 0 ) {
if( !IS_VALID_SOCKET( data_socket ) )
return( REQUEST_FAILED );
size = recvData( &rec_len, sizeof( rec_len ) );
}
#endif
if( size == sizeof( rec_len ) ) {
CONV_LE_16( rec_len );
#ifdef __RDOS__
if( rec_len && recvData( data, rec_len ) == rec_len ) {
#else
if( rec_len == 0 || recvData( data, rec_len ) == rec_len ) {
#endif
_DBG_NET(("Got a packet - size=%d\r\n", rec_len));
return( rec_len );
}
}
}
return( REQUEST_FAILED );
}
trap_retval RemotePut( void *data, trap_elen len )
{
unsigned_16 send_len;
int snd;
_DBG_NET(("RemotePut\r\n"));
if( IS_VALID_SOCKET( data_socket ) ) {
send_len = len;
CONV_LE_16( send_len );
snd = send( data_socket, (void *)&send_len, sizeof( send_len ), 0 );
if( IS_RET_OK( snd ) ) {
if( len != 0 )
snd = send( data_socket, data, len, 0 );
if( len == 0 || IS_RET_OK( snd ) ) {
#ifdef __RDOS__
RdosPushTcpConnection( data_socket );
#endif
_DBG_NET(("RemotePut...OK\r\n"));
return( len );
}
}
}
return( REQUEST_FAILED );
}
unsigned ReqRead_mem( void )
{
read_mem_req *acc;
unsigned len;
acc = GetInPtr( 0 );
CONV_LE_32( acc->mem_addr.offset );
CONV_LE_16( acc->mem_addr.segment );
CONV_LE_16( acc->len );
len = ReadMem( pid, GetOutPtr( 0 ), acc->mem_addr.offset, acc->len );
return( len );
}
unsigned ReqWrite_mem( void )
{
write_mem_req *acc;
write_mem_ret *ret;
unsigned len;
acc = GetInPtr( 0 );
CONV_LE_32( acc->mem_addr.offset );
CONV_LE_16( acc->mem_addr.segment );
ret = GetOutPtr( 0 );
len = GetTotalSize() - sizeof( *acc );
ret->len = WriteMem( pid, GetInPtr( sizeof( *acc ) ), acc->mem_addr.offset, len );
CONV_LE_16( ret->len );
return( sizeof( *ret ) );
}
static unsigned DoAWrite( unsigned req, sys_handle hdl, void *ptr, unsigned len )
{
mx_entry in[2];
mx_entry out[1];
union {
file_write_req file;
file_write_console_req con;
} acc;
file_write_ret ret;
SUPP_FILE_SERVICE( acc.file, req );
if( req == REQ_FILE_WRITE_CONSOLE ) {
in[0].len = sizeof( acc.con );
} else {
acc.file.handle = hdl;
CONV_LE_32( acc.file.handle );
in[0].len = sizeof( acc.file );
}
in[0].ptr = &acc;
in[1].ptr = ptr;
in[1].len = len;
out[0].ptr = &ret;
out[0].len = sizeof( ret );
TrapAccess( 2, &in, 1, &out );
CONV_LE_32( ret.err );
CONV_LE_16( ret.len );
if( ret.err != 0 ) {
StashErrCode( ret.err, OP_REMOTE );
return( ERR_RETURN );
} else {
return( ret.len );
}
}
static unsigned DoRead( sys_handle hdl, void *ptr, unsigned len )
{
mx_entry in[1];
mx_entry out[2];
file_read_req acc;
file_read_ret ret;
unsigned got;
SUPP_FILE_SERVICE( acc, REQ_FILE_READ );
acc.handle = hdl;
acc.len = len;
in[0].ptr = &acc;
in[0].len = sizeof( acc );
out[0].ptr = &ret;
out[0].len = sizeof( ret );
out[1].ptr = ptr;
out[1].len = len;
CONV_LE_32( acc.handle );
CONV_LE_16( acc.len );
got = TrapAccess( 1, &in, 2, &out );
CONV_LE_32( ret.err );
if( ret.err != 0 ) {
StashErrCode( ret.err, OP_REMOTE );
return( ERR_RETURN );
} else {
return( got - sizeof( ret ) );
}
}
static bool AccConnect( void )
{
connect_req *acc;
char *data;
connect_ret *ret;
trap_elen max;
trap_elen len;
acc = GetInPtr( 0 );
ret = GetOutPtr( 0 );
data = GetOutPtr( sizeof( *ret ) );
if( acc->ver.major != TrapVersion.major || acc->ver.minor > TrapVersion.minor ) {
strcpy( data, TRP_ERR_WRONG_SERVER_VERSION );
PutBuffPacket( RWBuff, sizeof( *acc ) + sizeof( TRP_ERR_WRONG_SERVER_VERSION ) );
} else {
len = TrapAccess( 1, &In[0], 1, &Out[0] );
max = MaxPacketSize();
if( max > sizeof( RWBuff ) )
max = sizeof( RWBuff );
if( ret->max_msg_size > max )
ret->max_msg_size = max;
CONV_LE_16( ret->max_msg_size );
PutBuffPacket( RWBuff, len );
}
if( data[0] != '\0' ) {
ServError( data );
return( FALSE );
}
return( TRUE );
}
unsigned MakeAsyncRun( bool single )
{
async_go_req acc;
async_go_ret ret;
addr_ptr tmp;
if( SuppAsyncId == 0 ) return( 0 );
acc.supp.core_req = REQ_PERFORM_SUPPLEMENTARY_SERVICE;
acc.supp.id = SuppAsyncId;
if( single )
acc.req = REQ_ASYNC_STEP;
else
acc.req = REQ_ASYNC_GO;
OnAnotherThreadSimpAccess( sizeof( acc ), &acc, sizeof( ret ), &ret );
CONV_LE_16( ret.conditions );
if( ret.conditions & COND_RUNNING ) {
ret.stack_pointer.offset = 0;
ret.stack_pointer.segment = 0;
ret.program_counter.offset = 0;
ret.program_counter.segment = 0;
} else {
CONV_LE_32( ret.stack_pointer.offset );
CONV_LE_16( ret.stack_pointer.segment );
CONV_LE_32( ret.program_counter.offset );
CONV_LE_16( ret.program_counter.segment );
if( ret.conditions & COND_CONFIG ) {
GetSysConfig();
CheckMADChange();
}
DbgRegs->mad = SysConfig.mad;
/* Use 'tmp' because of alignment problems */
tmp = ret.stack_pointer;
MADRegSpecialSet( MSR_SP, &DbgRegs->mr, &tmp );
tmp = ret.program_counter;
MADRegSpecialSet( MSR_IP, &DbgRegs->mr, &tmp );
if( ret.conditions & COND_THREAD ) {
DbgRegs->tid = RemoteSetThread( 0 );
}
}
return( ret.conditions );
}
unsigned_16 GetUInt( void )
/*************************/
{
unsigned_16 word;
word = *(unsigned_16 *)RecPtr;
CONV_LE_16( word );
RecPtr += 2;
return( word );
}
trap_retval ReqFile_write_console( void )
{
file_write_console_ret *ret;
ret = GetOutPtr( 0 );
ret->len = DoWrite( 2, GetInPtr( sizeof( file_write_console_req ) ),
GetTotalSize() - sizeof( file_write_console_req ) );
ret->err = errno;
CONV_LE_32( ret->err );
CONV_LE_16( ret->len );
return( sizeof( *ret ) );
}
trap_retval ReqFile_write( void )
{
file_write_req *acc;
file_write_ret *ret;
acc = GetInPtr( 0 );
CONV_LE_32( acc->handle );
ret = GetOutPtr( 0 );
ret->len = DoWrite( acc->handle, GetInPtr( sizeof( *acc ) ),
GetTotalSize() - sizeof( *acc ) );
ret->err = errno;
CONV_LE_32( ret->err );
CONV_LE_16( ret->len );
return( sizeof( *ret ) );
}
static void fix_sym64_byte_order( elf_file_handle elf_file_hnd, Elf64_Sym *e_sym )
{
// note that one of the branches will always get compiled out,
// depending on host endianness
if( elf_file_hnd->flags & ORL_FILE_FLAG_BIG_ENDIAN ) {
CONV_BE_32( e_sym->st_name );
SCONV_BE_64( e_sym->st_value );
SCONV_BE_64( e_sym->st_size );
CONV_BE_16( e_sym->st_shndx );
} else {
CONV_LE_32( e_sym->st_name );
SCONV_LE_64( e_sym->st_value );
SCONV_LE_64( e_sym->st_size );
CONV_LE_16( e_sym->st_shndx );
}
}
unsigned ReqClear_break( void )
{
clear_break_req *acc;
bp_t opcode;
acc = GetInPtr( 0 );
CONV_LE_32( acc->break_addr.offset );
CONV_LE_16( acc->break_addr.segment );
opcode = acc->old;
WriteMem( pid, &opcode, acc->break_addr.offset, sizeof( opcode ) );
Out( "ReqClear_break at " );
OutNum( acc->break_addr.offset );
Out( " (setting to " );
OutNum( opcode );
Out( ")\n" );
return( 0 );
}
unsigned ReqGet_sys_config( void )
{
get_sys_config_ret *ret;
ret = GetOutPtr( 0 );
ret->sys.os = OS_LINUX;
// TODO: Detect OS version (kernel version?)!
ret->sys.osmajor = 1;
ret->sys.osminor = 0;
ret->sys.cpu = MIPS_R3000;
ret->sys.fpu = 0;
ret->sys.huge_shift = 3;
ret->sys.mad = MAD_MIPS;
CONV_LE_16( ret->sys.mad );
return( sizeof( *ret ) );
}
static unsigned ReadSection( handle filehndl, unsigned off )
{
unsigned_16 len;
unsigned last;
void *new;
if( ReadStream( filehndl, &len, sizeof( len ) ) != sizeof( len ) ) {
return( 0 );
}
CONV_LE_16( len );
last = off + len;
if( last > ParseTableSize ) {
new = ParseTable;
_Realloc( new, last );
if( new == NULL ) return( 0 );
ParseTable = new;
ParseTableSize = last;
}
static unsigned_32 GetOffset( void )
/**********************************/
{
if( isMS386 ) {
unsigned_32 dword;
dword = *(unsigned_32 *)RecPtr;
CONV_LE_32( dword );
RecPtr += 4;
return( dword );
} else {
unsigned_16 word;
word = *(unsigned_16 *)RecPtr;
CONV_LE_16( word );
RecPtr += 2;
return( word );
}
}
unsigned ReqSet_break( void )
{
set_break_req *acc;
set_break_ret *ret;
bp_t opcode;
acc = GetInPtr( 0 );
ret = GetOutPtr( 0 );
CONV_LE_32( acc->break_addr.offset );
CONV_LE_16( acc->break_addr.segment );
ReadMem( pid, &opcode, acc->break_addr.offset, sizeof( opcode ) );
ret->old = opcode;
opcode = BRK_POINT;
WriteMem( pid, &opcode, acc->break_addr.offset, sizeof( opcode ) );
Out( "ReqSet_break at " );
OutNum( acc->break_addr.offset );
Out( " (was " );
OutNum( ret->old );
Out( ")\n" );
return( sizeof( *ret ) );
}
trap_retval ReqFile_read( void )
{
unsigned total;
unsigned len;
char *ptr;
size_t curr;
ssize_t rv;
file_read_req *acc;
file_read_ret *ret;
acc = GetInPtr( 0 );
CONV_LE_32( acc->handle );
CONV_LE_16( acc->len );
ret = GetOutPtr( 0 );
ptr = GetOutPtr( sizeof( *ret ) );
len = acc->len;
total = 0;
for( ;; ) {
if( len == 0 ) break;
curr = len;
if( curr > INT_MAX ) curr = INT_MAX;
rv = read( acc->handle, ptr, curr );
if( rv < 0 ) {
total = -1;
break;
}
total += rv;
if( rv != curr ) break;
ptr += rv;
len -= rv;
}
if( total == -1 ) {
total = 0;
} else {
errno = 0;
}
ret->err = errno;
CONV_LE_32( ret->err );
return( sizeof( *ret ) + total );
}
void RemotePollRunThread( void )
{
run_thread_poll_req acc;
run_thread_poll_ret ret;
if( SuppRunThreadId == 0 ) return;
acc.supp.core_req = REQ_PERFORM_SUPPLEMENTARY_SERVICE;
acc.supp.id = SuppRunThreadId;
acc.req = REQ_RUN_THREAD_POLL;
OnAnotherThreadSimpAccess( sizeof( acc ), &acc, sizeof( ret ), &ret );
CONV_LE_16( ret.conditions );
if( ret.conditions & COND_CONFIG ) {
GetSysConfig();
CheckMADChange();
}
if( ret.conditions & COND_THREAD ) {
CheckForNewThreads( TRUE );
}
}
/*
* AccMapAddr - map address in image from link-time virtual address to
* actual linear address as loaded in memory. For executables, this will
* in effect return the address unchanged (image base 0x08048100 equals
* linear 0x08048100), for shared libs this will typically add the offset
* from zero (link time VA) to actual load base.
*/
trap_retval ReqMap_addr( void )
{
map_addr_req *acc;
map_addr_ret *ret;
unsigned long val;
lib_load_info *lli;
// Note: Info about the process address space is stored in the user register
// for GDB, so we can use that to find out what we need to convert these
// values in here...
acc = GetInPtr( 0 );
CONV_LE_32( acc->in_addr.offset );
CONV_LE_16( acc->in_addr.segment );
CONV_LE_32( acc->mod_handle );
ret = GetOutPtr( 0 );
ret->lo_bound = 0;
ret->hi_bound = ~(addr_off)0;
errno = 0;
if( (val = ptrace( PTRACE_PEEKUSER, pid, (void *)(offsetof( user_struct, start_code )), 0 )) == -1 ) {
if( errno ) {
Out( "ReqMap_addr: first PTRACE_PEEKUSER failed!\n" );
val = 0;
}
}
#ifdef __MIPS__
// Hack for MIPS - the above call seems to be failing but isn't returning
// an error; it's possible that the call just isn't valid.
val = 0;
#endif
ret->out_addr.offset = acc->in_addr.offset + val;
if( acc->mod_handle > ModuleTop ) {
Out( "ReqMap_addr: Invalid handle passed!\n" );
return( sizeof( *ret ) );
} else {
lli = &moduleInfo[acc->mod_handle];
}
Out( "ReqMap_addr: addr " );
OutNum( acc->in_addr.segment );
Out( ":" );
OutNum( acc->in_addr.offset );
Out( " in module " );
OutNum( acc->mod_handle );
if( acc->in_addr.segment == MAP_FLAT_DATA_SELECTOR ||
acc->in_addr.segment == flatDS ) {
if( (val = ptrace( PTRACE_PEEKUSER, pid, (void *)offsetof( user_struct, u_tsize ), 0 )) == -1 ) {
if( errno ) {
Out( "ReqMap_addr: second PTRACE_PEEKUSER failed!\n" );
val = 0;
}
}
ret->out_addr.offset += val;
ret->out_addr.segment = flatDS;
} else {
ret->out_addr.segment = flatCS;
}
ret->out_addr.offset += lli->offset;
Out( " to " );
OutNum( ret->out_addr.offset );
Out( "\n" );
CONV_LE_32( ret->out_addr.offset );
CONV_LE_16( ret->out_addr.segment );
CONV_LE_32( ret->lo_bound );
CONV_LE_32( ret->hi_bound );
return( sizeof( *ret ) );
}
trap_retval RemoteGet( byte *rec, trap_elen len )
{
unsigned_16 rec_len;
len = len;
_DBG_NET(("RemoteGet\r\n"));
#ifdef __RDOS__
if( !IS_INVALID_SOCKET( data_socket ) && !RdosIsTcpConnectionClosed( data_socket ) ) {
#else
if( !IS_INVALID_SOCKET( data_socket ) ) {
#endif
if( FullGet( &rec_len, sizeof( rec_len ) ) == sizeof( rec_len ) ) {
CONV_LE_16( rec_len );
if( rec_len == 0 || FullGet( rec, rec_len ) == rec_len ) {
_DBG_NET(("Got a packet - size=%d\r\n", rec_len));
return( rec_len );
}
}
}
return( REQUEST_FAILED );
}
trap_retval RemotePut( byte *rec, trap_elen len )
{
unsigned_16 send_len;
_DBG_NET(("RemotePut\r\n"));
#ifdef __RDOS__
if( !IS_INVALID_SOCKET( data_socket ) && !RdosIsTcpConnectionClosed( data_socket ) ) {
#else
if( !IS_INVALID_SOCKET( data_socket ) ) {
#endif
send_len = len;
CONV_LE_16( send_len );
if( !IS_SOCK_ERROR( send( data_socket, (void *)&send_len, sizeof( send_len ), 0 ) ) ) {
if( len == 0 || !IS_SOCK_ERROR( send( data_socket, (void *)rec, len, 0 ) ) ) {
#ifdef __RDOS__
RdosPushTcpConnection( data_socket );
#endif
_DBG_NET(("RemotePut...OK\r\n"));
return( len );
}
}
}
return( REQUEST_FAILED );
}
#ifndef __RDOS__
static void nodelay( void )
{
struct protoent *proto;
int delayoff;
int p;
delayoff = 1;
proto = getprotobyname( "tcp" );
p = proto ? proto->p_proto : IPPROTO_TCP;
setsockopt( data_socket, p, TCP_NODELAY, (void *)&delayoff, sizeof( delayoff ) );
}
#endif
bool RemoteConnect( void )
{
#ifdef SERVER
#ifdef __RDOS__
void *obj;
obj = RdosWaitTimeout( wait_handle, 250 );
if( obj != NULL ) {
data_socket = RdosGetTcpListen( listen_handle );
if( !IS_INVALID_SOCKET( data_socket ) ) {
_DBG_NET(("Found a connection\r\n"));
return( TRUE );
}
}
#else
struct timeval timeout;
fd_set ready;
struct sockaddr dummy;
trp_socklen dummy_len = sizeof( dummy );
FD_ZERO( &ready );
FD_SET( control_socket, &ready );
timeout.tv_sec = 0;
timeout.tv_usec = 10000;
if( select( control_socket + 1, &ready, 0, 0, &timeout ) > 0 ) {
data_socket = accept( control_socket, &dummy, &dummy_len );
if( !IS_INVALID_SOCKET( data_socket ) ) {
nodelay();
_DBG_NET(("Found a connection\r\n"));
return( TRUE );
}
}
#endif
#else
#ifdef __RDOS__
// todo: Add code for connect!
#else
data_socket = socket( AF_INET, SOCK_STREAM, 0 );
if( !IS_INVALID_SOCKET( data_socket ) ) {
if( connect( data_socket, (struct sockaddr TRAPFAR *)&socket_address, sizeof( socket_address ) ) >= 0 ) {
nodelay();
return( TRUE );
}
}
#endif
#endif
return( FALSE );
}
static unsigned ProgRun( int step )
{
static int ptrace_sig = 0;
static int ld_state = 0;
user_regs_struct regs;
int status;
prog_go_ret *ret;
void (*old)(int);
int debug_continue;
if( pid == 0 )
return( 0 );
ret = GetOutPtr( 0 );
if( at_end ) {
ptrace_sig = 0;
ret->conditions = COND_TERMINATE;
goto end;
}
/* we only want child-generated SIGINTs now */
do {
old = setsig( SIGINT, SIG_IGN );
if( step ) {
Out( "PTRACE_SINGLESTEP\n" );
if( ptrace( PTRACE_SINGLESTEP, pid, NULL, (void *)ptrace_sig ) == -1 )
perror( "PTRACE_SINGLESTEP" );
} else {
Out( "PTRACE_CONT\n" );
if( ptrace( PTRACE_CONT, pid, NULL, (void *)ptrace_sig ) == -1 )
perror( "PTRACE_CONT" );
}
waitpid( pid, &status, 0 );
setsig( SIGINT, old );
#if defined( MD_x86 )
ptrace( PTRACE_GETREGS, pid, NULL, ®s );
#elif defined( MD_ppc )
regs.eip = ptrace( PTRACE_PEEKUSER, pid, REGSIZE * PT_NIP, NULL );
regs.esp = ptrace( PTRACE_PEEKUSER, pid, REGSIZE * PT_R1, NULL );
#elif defined( MD_mips )
regs.eip = ptrace( PTRACE_PEEKUSER, pid, (void *)PC, NULL );
regs.esp = ptrace( PTRACE_PEEKUSER, pid, (void *)29, NULL );
#endif
Out( " eip " );
OutNum( regs.eip );
Out( "\n" );
debug_continue = FALSE;
if( WIFSTOPPED( status ) ) {
switch( ( ptrace_sig = WSTOPSIG( status ) ) ) {
case SIGSEGV:
case SIGILL:
case SIGFPE:
case SIGABRT:
case SIGBUS:
case SIGQUIT:
case SIGSYS:
last_sig = ptrace_sig;
ret->conditions = COND_EXCEPTION;
ptrace_sig = 0;
break;
case SIGINT:
ret->conditions = COND_USER;
ptrace_sig = 0;
break;
case SIGTRAP:
ret->conditions = step ? COND_TRACE : COND_BREAK;
Out( "sigtrap\n" );
ptrace_sig = 0;
break;
default:
/* For signals that we do not wish to handle, we need
* to continue the debuggee until we get a signal
* that we need to handle
*/
Out( "Unknown signal " );
OutNum( ptrace_sig );
Out( "\n" );
debug_continue = TRUE;
break;
}
} else if( WIFEXITED( status ) ) {
Out( "WIFEXITED\n" );
at_end = TRUE;
ret->conditions = COND_TERMINATE;
ptrace_sig = 0;
goto end;
}
} while( debug_continue );
if( ret->conditions == COND_BREAK ) {
#if defined( MD_x86 )
if( regs.eip == rdebug.r_brk + sizeof( old_ld_bp ) ) {
#elif defined( MD_ppc ) || defined( MD_mips )
if( regs.eip == rdebug.r_brk ) {
#endif
int psig = 0;
void (*oldsig)(int);
bp_t opcode = BRK_POINT;
/* The dynamic linker breakpoint was hit, meaning that
* libraries are being loaded or unloaded. This gets a bit
* tricky because we must restore the original code that was
* at the breakpoint and execute it, but we still want to
* keep the breakpoint.
*/
WriteMem( pid, &old_ld_bp, rdebug.r_brk, sizeof( old_ld_bp ) );
ReadMem( pid, &rdebug, (addr48_off)dbg_rdebug, sizeof( rdebug ) );
Out( "ld breakpoint hit, state is " );
switch( rdebug.r_state ) {
case RT_ADD:
Out( "RT_ADD\n" );
ld_state = RT_ADD;
AddOneLib( rdebug.r_map );
break;
case RT_DELETE:
Out( "RT_DELETE\n" );
ld_state = RT_DELETE;
break;
case RT_CONSISTENT:
Out( "RT_CONSISTENT\n" );
if( ld_state == RT_DELETE )
DelOneLib( rdebug.r_map );
ld_state = RT_CONSISTENT;
break;
default:
Out( "error!\n" );
break;
}
regs.orig_eax = -1;
#if defined( MD_x86 )
regs.eip--;
ptrace( PTRACE_SETREGS, pid, NULL, ®s );
#endif
oldsig = setsig( SIGINT, SIG_IGN );
ptrace( PTRACE_SINGLESTEP, pid, NULL, (void *)psig );
waitpid( pid, &status, 0 );
setsig( SIGINT, oldsig );
WriteMem( pid, &opcode, rdebug.r_brk, sizeof( old_ld_bp ) );
ret->conditions = COND_LIBRARIES;
} else {
#if defined( MD_x86 )
Out( "decrease eip(sigtrap)\n" );
regs.orig_eax = -1;
regs.eip--;
ptrace( PTRACE_SETREGS, pid, NULL, ®s );
#endif
}
}
orig_eax = regs.orig_eax;
last_eip = regs.eip;
ret->program_counter.offset = regs.eip;
ret->program_counter.segment = regs.cs;
ret->stack_pointer.offset = regs.esp;
ret->stack_pointer.segment = regs.ss;
ret->conditions |= COND_CONFIG;
/* If debuggee has dynamic section, try getting the r_debug struct
* every time the debuggee stops. The r_debug data may not be available
* immediately after the debuggee process loads.
*/
if( !have_rdebug && (dbg_dyn != NULL) ) {
if( Get_ld_info( pid, dbg_dyn, &rdebug, &dbg_rdebug ) ) {
bp_t opcode;
AddInitialLibs( rdebug.r_map );
have_rdebug = TRUE;
ret->conditions |= COND_LIBRARIES;
/* Set a breakpoint in dynamic linker. That way we can be
* informed on dynamic library load/unload events.
*/
ReadMem( pid, &old_ld_bp, rdebug.r_brk, sizeof( old_ld_bp ) );
Out( "Setting ld breakpoint at " );
OutNum( rdebug.r_brk );
Out( " old opcode was " );
OutNum( old_ld_bp );
Out( "\n" );
opcode = BRK_POINT;
WriteMem( pid, &opcode, rdebug.r_brk, sizeof( opcode ) );
}
}
end:
CONV_LE_32( ret->stack_pointer.offset );
CONV_LE_16( ret->stack_pointer.segment );
CONV_LE_32( ret->program_counter.offset );
CONV_LE_16( ret->program_counter.segment );
CONV_LE_16( ret->conditions );
return( sizeof( *ret ) );
}
unsigned ReqProg_step( void )
{
return( ProgRun( TRUE ) );
}
unsigned ReqProg_go( void )
{
return( ProgRun( FALSE ) );
}
unsigned ReqRedirect_stdin( void )
{
redirect_stdin_ret *ret;
ret = GetOutPtr( 0 );
ret->err = 1;
return( sizeof( *ret ) );
}
void WriteLittleEndian16( unsigned_16 num )
{
CONV_LE_16( num );
WriteNew( &num, sizeof( num ) );
}
