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/*
* gdb server stub
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*
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* Copyright ( c ) 2003 - 2005 Fabrice Bellard
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*
* This library is free software ; you can redistribute it and / or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation ; either
* version 2 of the License , or ( at your option ) any later version .
*
* This library is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
* Lesser General Public License for more details .
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library ; if not , write to the Free Software
* Foundation , Inc ., 59 Temple Place , Suite 330 , Boston , MA 02111 - 1307 USA
*/
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# include "config.h"
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# ifdef CONFIG_USER_ONLY
# include < stdlib . h >
# include < stdio . h >
# include < stdarg . h >
# include < string . h >
# include < errno . h >
# include < unistd . h >
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# include < fcntl . h >
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# include "qemu.h"
# else
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# include "vl.h"
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# endif
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# include "qemu_socket.h"
# ifdef _WIN32
/* XXX: these constants may be independent of the host ones even for Unix */
# ifndef SIGTRAP
# define SIGTRAP 5
# endif
# ifndef SIGINT
# define SIGINT 2
# endif
# else
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# include < signal . h >
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# endif
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// # define DEBUG_GDB
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enum RSState {
RS_IDLE ,
RS_GETLINE ,
RS_CHKSUM1 ,
RS_CHKSUM2 ,
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RS_SYSCALL ,
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};
typedef struct GDBState {
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CPUState * env ; /* current CPU */
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enum RSState state ; /* parsing state */
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char line_buf [ 4096 ];
int line_buf_index ;
int line_csum ;
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char last_packet [ 4100 ];
int last_packet_len ;
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# ifdef CONFIG_USER_ONLY
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int fd ;
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int running_state ;
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# else
CharDriverState * chr ;
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# endif
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} GDBState ;
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# ifdef CONFIG_USER_ONLY
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/* XXX: This is not thread safe. Do we care? */
static int gdbserver_fd = - 1 ;
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/* XXX: remove this hack. */
static GDBState gdbserver_state ;
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static int get_char ( GDBState * s )
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{
uint8_t ch ;
int ret ;
for (;;) {
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ret = recv ( s -> fd , & ch , 1 , 0 );
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if ( ret < 0 ) {
if ( errno != EINTR && errno != EAGAIN )
return - 1 ;
} else if ( ret == 0 ) {
return - 1 ;
} else {
break ;
}
}
return ch ;
}
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# endif
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/* GDB stub state for use by semihosting syscalls. */
static GDBState * gdb_syscall_state ;
static gdb_syscall_complete_cb gdb_current_syscall_cb ;
enum {
GDB_SYS_UNKNOWN ,
GDB_SYS_ENABLED ,
GDB_SYS_DISABLED ,
} gdb_syscall_mode ;
/* If gdb is connected when the first semihosting syscall occurs then use
remote gdb syscalls . Otherwise use native file IO . */
int use_gdb_syscalls ( void )
{
if ( gdb_syscall_mode == GDB_SYS_UNKNOWN ) {
gdb_syscall_mode = ( gdb_syscall_state ? GDB_SYS_ENABLED
: GDB_SYS_DISABLED );
}
return gdb_syscall_mode == GDB_SYS_ENABLED ;
}
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static void put_buffer ( GDBState * s , const uint8_t * buf , int len )
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{
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# ifdef CONFIG_USER_ONLY
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int ret ;
while ( len > 0 ) {
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ret = send ( s -> fd , buf , len , 0 );
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if ( ret < 0 ) {
if ( errno != EINTR && errno != EAGAIN )
return ;
} else {
buf += ret ;
len -= ret ;
}
}
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# else
qemu_chr_write ( s -> chr , buf , len );
# endif
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}
static inline int fromhex ( int v )
{
if ( v >= '0' && v <= '9' )
return v - '0' ;
else if ( v >= 'A' && v <= 'F' )
return v - 'A' + 10 ;
else if ( v >= 'a' && v <= 'f' )
return v - 'a' + 10 ;
else
return 0 ;
}
static inline int tohex ( int v )
{
if ( v < 10 )
return v + '0' ;
else
return v - 10 + 'a' ;
}
static void memtohex ( char * buf , const uint8_t * mem , int len )
{
int i , c ;
char * q ;
q = buf ;
for ( i = 0 ; i < len ; i ++ ) {
c = mem [ i ];
* q ++ = tohex ( c >> 4 );
* q ++ = tohex ( c & 0xf );
}
* q = '\0' ;
}
static void hextomem ( uint8_t * mem , const char * buf , int len )
{
int i ;
for ( i = 0 ; i < len ; i ++ ) {
mem [ i ] = ( fromhex ( buf [ 0 ]) << 4 ) | fromhex ( buf [ 1 ]);
buf += 2 ;
}
}
/* return -1 if error, 0 if OK */
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static int put_packet ( GDBState * s , char * buf )
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{
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int len , csum , i ;
char * p ;
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# ifdef DEBUG_GDB
printf ( "reply='%s' \n " , buf );
# endif
for (;;) {
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p = s -> last_packet ;
* ( p ++ ) = '$' ;
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len = strlen ( buf );
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memcpy ( p , buf , len );
p += len ;
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csum = 0 ;
for ( i = 0 ; i < len ; i ++ ) {
csum += buf [ i ];
}
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* ( p ++ ) = '#' ;
* ( p ++ ) = tohex (( csum >> 4 ) & 0xf );
* ( p ++ ) = tohex (( csum ) & 0xf );
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s -> last_packet_len = p - s -> last_packet ;
put_buffer ( s , s -> last_packet , s -> last_packet_len );
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# ifdef CONFIG_USER_ONLY
i = get_char ( s );
if ( i < 0 )
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return - 1 ;
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if ( i == '+' )
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break ;
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# else
break ;
# endif
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}
return 0 ;
}
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# if defined ( TARGET_I386 )
static int cpu_gdb_read_registers ( CPUState * env , uint8_t * mem_buf )
{
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uint32_t * registers = ( uint32_t * ) mem_buf ;
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int i , fpus ;
for ( i = 0 ; i < 8 ; i ++ ) {
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registers [ i ] = env -> regs [ i ];
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}
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registers [ 8 ] = env -> eip ;
registers [ 9 ] = env -> eflags ;
registers [ 10 ] = env -> segs [ R_CS ]. selector ;
registers [ 11 ] = env -> segs [ R_SS ]. selector ;
registers [ 12 ] = env -> segs [ R_DS ]. selector ;
registers [ 13 ] = env -> segs [ R_ES ]. selector ;
registers [ 14 ] = env -> segs [ R_FS ]. selector ;
registers [ 15 ] = env -> segs [ R_GS ]. selector ;
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/* XXX: convert floats */
for ( i = 0 ; i < 8 ; i ++ ) {
memcpy ( mem_buf + 16 * 4 + i * 10 , & env -> fpregs [ i ], 10 );
}
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registers [ 36 ] = env -> fpuc ;
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fpus = ( env -> fpus & ~ 0x3800 ) | ( env -> fpstt & 0x7 ) << 11 ;
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registers [ 37 ] = fpus ;
registers [ 38 ] = 0 ; /* XXX: convert tags */
registers [ 39 ] = 0 ; /* fiseg */
registers [ 40 ] = 0 ; /* fioff */
registers [ 41 ] = 0 ; /* foseg */
registers [ 42 ] = 0 ; /* fooff */
registers [ 43 ] = 0 ; /* fop */
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for ( i = 0 ; i < 16 ; i ++ )
tswapls ( & registers [ i ]);
for ( i = 36 ; i < 44 ; i ++ )
tswapls ( & registers [ i ]);
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return 44 * 4 ;
}
static void cpu_gdb_write_registers ( CPUState * env , uint8_t * mem_buf , int size )
{
uint32_t * registers = ( uint32_t * ) mem_buf ;
int i ;
for ( i = 0 ; i < 8 ; i ++ ) {
env -> regs [ i ] = tswapl ( registers [ i ]);
}
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env -> eip = tswapl ( registers [ 8 ]);
env -> eflags = tswapl ( registers [ 9 ]);
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# if defined ( CONFIG_USER_ONLY )
# define LOAD_SEG ( index , sreg ) \
if ( tswapl ( registers [ index ]) != env -> segs [ sreg ]. selector ) \
cpu_x86_load_seg ( env , sreg , tswapl ( registers [ index ]));
LOAD_SEG ( 10 , R_CS );
LOAD_SEG ( 11 , R_SS );
LOAD_SEG ( 12 , R_DS );
LOAD_SEG ( 13 , R_ES );
LOAD_SEG ( 14 , R_FS );
LOAD_SEG ( 15 , R_GS );
# endif
}
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# elif defined ( TARGET_PPC )
static int cpu_gdb_read_registers ( CPUState * env , uint8_t * mem_buf )
{
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uint32_t * registers = ( uint32_t * ) mem_buf , tmp ;
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int i ;
/* fill in gprs */
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for ( i = 0 ; i < 32 ; i ++ ) {
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registers [ i ] = tswapl ( env -> gpr [ i ]);
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}
/* fill in fprs */
for ( i = 0 ; i < 32 ; i ++ ) {
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registers [( i * 2 ) + 32 ] = tswapl ( * (( uint32_t * ) & env -> fpr [ i ]));
registers [( i * 2 ) + 33 ] = tswapl ( * (( uint32_t * ) & env -> fpr [ i ] + 1 ));
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}
/* nip, msr, ccr, lnk, ctr, xer, mq */
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registers [ 96 ] = tswapl ( env -> nip );
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registers [ 97 ] = tswapl ( do_load_msr ( env ));
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tmp = 0 ;
for ( i = 0 ; i < 8 ; i ++ )
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tmp |= env -> crf [ i ] << ( 32 - (( i + 1 ) * 4 ));
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registers [ 98 ] = tswapl ( tmp );
registers [ 99 ] = tswapl ( env -> lr );
registers [ 100 ] = tswapl ( env -> ctr );
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registers [ 101 ] = tswapl ( ppc_load_xer ( env ));
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registers [ 102 ] = 0 ;
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return 103 * 4 ;
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}
static void cpu_gdb_write_registers ( CPUState * env , uint8_t * mem_buf , int size )
{
uint32_t * registers = ( uint32_t * ) mem_buf ;
int i ;
/* fill in gprs */
for ( i = 0 ; i < 32 ; i ++ ) {
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env -> gpr [ i ] = tswapl ( registers [ i ]);
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}
/* fill in fprs */
for ( i = 0 ; i < 32 ; i ++ ) {
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* (( uint32_t * ) & env -> fpr [ i ]) = tswapl ( registers [( i * 2 ) + 32 ]);
* (( uint32_t * ) & env -> fpr [ i ] + 1 ) = tswapl ( registers [( i * 2 ) + 33 ]);
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}
/* nip, msr, ccr, lnk, ctr, xer, mq */
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env -> nip = tswapl ( registers [ 96 ]);
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do_store_msr ( env , tswapl ( registers [ 97 ]));
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registers [ 98 ] = tswapl ( registers [ 98 ]);
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for ( i = 0 ; i < 8 ; i ++ )
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env -> crf [ i ] = ( registers [ 98 ] >> ( 32 - (( i + 1 ) * 4 ))) & 0xF ;
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env -> lr = tswapl ( registers [ 99 ]);
env -> ctr = tswapl ( registers [ 100 ]);
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ppc_store_xer ( env , tswapl ( registers [ 101 ]));
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}
# elif defined ( TARGET_SPARC )
static int cpu_gdb_read_registers ( CPUState * env , uint8_t * mem_buf )
{
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target_ulong * registers = ( target_ulong * ) mem_buf ;
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int i ;
/* fill in g0..g7 */
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for ( i = 0 ; i < 8 ; i ++ ) {
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registers [ i ] = tswapl ( env -> gregs [ i ]);
}
/* fill in register window */
for ( i = 0 ; i < 24 ; i ++ ) {
registers [ i + 8 ] = tswapl ( env -> regwptr [ i ]);
}
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# ifndef TARGET_SPARC64
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/* fill in fprs */
for ( i = 0 ; i < 32 ; i ++ ) {
registers [ i + 32 ] = tswapl ( * (( uint32_t * ) & env -> fpr [ i ]));
}
/* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
registers [ 64 ] = tswapl ( env -> y );
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{
target_ulong tmp ;
tmp = GET_PSR ( env );
registers [ 65 ] = tswapl ( tmp );
}
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registers [ 66 ] = tswapl ( env -> wim );
registers [ 67 ] = tswapl ( env -> tbr );
registers [ 68 ] = tswapl ( env -> pc );
registers [ 69 ] = tswapl ( env -> npc );
registers [ 70 ] = tswapl ( env -> fsr );
registers [ 71 ] = 0 ; /* csr */
registers [ 72 ] = 0 ;
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return 73 * sizeof ( target_ulong );
# else
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/* fill in fprs */
for ( i = 0 ; i < 64 ; i += 2 ) {
uint64_t tmp ;
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tmp = (( uint64_t ) * ( uint32_t * ) & env -> fpr [ i ]) << 32 ;
tmp |= * ( uint32_t * ) & env -> fpr [ i + 1 ];
registers [ i / 2 + 32 ] = tswap64 ( tmp );
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}
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registers [ 64 ] = tswapl ( env -> pc );
registers [ 65 ] = tswapl ( env -> npc );
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registers [ 66 ] = tswapl ((( uint64_t ) GET_CCR ( env ) << 32 ) |
(( env -> asi & 0xff ) << 24 ) |
(( env -> pstate & 0xfff ) << 8 ) |
GET_CWP64 ( env ));
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registers [ 67 ] = tswapl ( env -> fsr );
registers [ 68 ] = tswapl ( env -> fprs );
registers [ 69 ] = tswapl ( env -> y );
return 70 * sizeof ( target_ulong );
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# endif
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}
static void cpu_gdb_write_registers ( CPUState * env , uint8_t * mem_buf , int size )
{
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target_ulong * registers = ( target_ulong * ) mem_buf ;
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int i ;
/* fill in g0..g7 */
for ( i = 0 ; i < 7 ; i ++ ) {
env -> gregs [ i ] = tswapl ( registers [ i ]);
}
/* fill in register window */
for ( i = 0 ; i < 24 ; i ++ ) {
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env -> regwptr [ i ] = tswapl ( registers [ i + 8 ]);
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}
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# ifndef TARGET_SPARC64
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/* fill in fprs */
for ( i = 0 ; i < 32 ; i ++ ) {
* (( uint32_t * ) & env -> fpr [ i ]) = tswapl ( registers [ i + 32 ]);
}
/* Y, PSR, WIM, TBR, PC, NPC, FPSR, CPSR */
env -> y = tswapl ( registers [ 64 ]);
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PUT_PSR ( env , tswapl ( registers [ 65 ]));
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env -> wim = tswapl ( registers [ 66 ]);
env -> tbr = tswapl ( registers [ 67 ]);
env -> pc = tswapl ( registers [ 68 ]);
env -> npc = tswapl ( registers [ 69 ]);
env -> fsr = tswapl ( registers [ 70 ]);
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# else
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for ( i = 0 ; i < 64 ; i += 2 ) {
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uint64_t tmp ;
tmp = tswap64 ( registers [ i / 2 + 32 ]);
* (( uint32_t * ) & env -> fpr [ i ]) = tmp >> 32 ;
* (( uint32_t * ) & env -> fpr [ i + 1 ]) = tmp & 0xffffffff ;
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}
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env -> pc = tswapl ( registers [ 64 ]);
env -> npc = tswapl ( registers [ 65 ]);
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{
uint64_t tmp = tswapl ( registers [ 66 ]);
PUT_CCR ( env , tmp >> 32 );
env -> asi = ( tmp >> 24 ) & 0xff ;
env -> pstate = ( tmp >> 8 ) & 0xfff ;
PUT_CWP64 ( env , tmp & 0xff );
}
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env -> fsr = tswapl ( registers [ 67 ]);
env -> fprs = tswapl ( registers [ 68 ]);
env -> y = tswapl ( registers [ 69 ]);
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# endif
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}
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# elif defined ( TARGET_ARM )
static int cpu_gdb_read_registers ( CPUState * env , uint8_t * mem_buf )
{
int i ;
uint8_t * ptr ;
ptr = mem_buf ;
/* 16 core integer registers (4 bytes each). */
for ( i = 0 ; i < 16 ; i ++ )
{
* ( uint32_t * ) ptr = tswapl ( env -> regs [ i ]);
ptr += 4 ;
}
/* 8 FPA registers ( 12 bytes each ), FPS ( 4 bytes ).
Not yet implemented . */
memset ( ptr , 0 , 8 * 12 + 4 );
ptr += 8 * 12 + 4 ;
/* CPSR (4 bytes). */
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* ( uint32_t * ) ptr = tswapl ( cpsr_read ( env ));
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ptr += 4 ;
return ptr - mem_buf ;
}
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static void cpu_gdb_write_registers ( CPUState * env , uint8_t * mem_buf , int size )
{
int i ;
uint8_t * ptr ;
ptr = mem_buf ;
/* Core integer registers. */
for ( i = 0 ; i < 16 ; i ++ )
{
env -> regs [ i ] = tswapl ( * ( uint32_t * ) ptr );
ptr += 4 ;
}
/* Ignore FPA regs and scr. */
ptr += 8 * 12 + 4 ;
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cpsr_write ( env , tswapl ( * ( uint32_t * ) ptr ), 0xffffffff );
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}
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# elif defined ( TARGET_M68K )
static int cpu_gdb_read_registers ( CPUState * env , uint8_t * mem_buf )
{
int i ;
uint8_t * ptr ;
CPU_DoubleU u ;
ptr = mem_buf ;
/* D0-D7 */
for ( i = 0 ; i < 8 ; i ++ ) {
* ( uint32_t * ) ptr = tswapl ( env -> dregs [ i ]);
ptr += 4 ;
}
/* A0-A7 */
for ( i = 0 ; i < 8 ; i ++ ) {
* ( uint32_t * ) ptr = tswapl ( env -> aregs [ i ]);
ptr += 4 ;
}
* ( uint32_t * ) ptr = tswapl ( env -> sr );
ptr += 4 ;
* ( uint32_t * ) ptr = tswapl ( env -> pc );
ptr += 4 ;
/* F0 - F7 . The 68881 / 68040 have 12 - bit extended precision registers .
ColdFire has 8 - bit double precision registers . */
for ( i = 0 ; i < 8 ; i ++ ) {
u . d = env -> fregs [ i ];
* ( uint32_t * ) ptr = tswap32 ( u . l . upper );
* ( uint32_t * ) ptr = tswap32 ( u . l . lower );
}
/* FP control regs (not implemented). */
memset ( ptr , 0 , 3 * 4 );
ptr += 3 * 4 ;
return ptr - mem_buf ;
}
static void cpu_gdb_write_registers ( CPUState * env , uint8_t * mem_buf , int size )
{
int i ;
uint8_t * ptr ;
CPU_DoubleU u ;
ptr = mem_buf ;
/* D0-D7 */
for ( i = 0 ; i < 8 ; i ++ ) {
env -> dregs [ i ] = tswapl ( * ( uint32_t * ) ptr );
ptr += 4 ;
}
/* A0-A7 */
for ( i = 0 ; i < 8 ; i ++ ) {
env -> aregs [ i ] = tswapl ( * ( uint32_t * ) ptr );
ptr += 4 ;
}
env -> sr = tswapl ( * ( uint32_t * ) ptr );
ptr += 4 ;
env -> pc = tswapl ( * ( uint32_t * ) ptr );
ptr += 4 ;
/* F0 - F7 . The 68881 / 68040 have 12 - bit extended precision registers .
ColdFire has 8 - bit double precision registers . */
for ( i = 0 ; i < 8 ; i ++ ) {
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u . l . upper = tswap32 ( * ( uint32_t * ) ptr );
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u . l . lower = tswap32 ( * ( uint32_t * ) ptr );
env -> fregs [ i ] = u . d ;
}
/* FP control regs (not implemented). */
ptr += 3 * 4 ;
}
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# elif defined ( TARGET_MIPS )
static int cpu_gdb_read_registers ( CPUState * env , uint8_t * mem_buf )
{
int i ;
uint8_t * ptr ;
ptr = mem_buf ;
for ( i = 0 ; i < 32 ; i ++ )
{
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* ( target_ulong * ) ptr = tswapl ( env -> gpr [ i ][ env -> current_tc ]);
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ptr += sizeof ( target_ulong );
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}
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* ( target_ulong * ) ptr = tswapl ( env -> CP0_Status );
ptr += sizeof ( target_ulong );
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* ( target_ulong * ) ptr = tswapl ( env -> LO [ 0 ][ env -> current_tc ]);
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ptr += sizeof ( target_ulong );
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* ( target_ulong * ) ptr = tswapl ( env -> HI [ 0 ][ env -> current_tc ]);
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ptr += sizeof ( target_ulong );
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* ( target_ulong * ) ptr = tswapl ( env -> CP0_BadVAddr );
ptr += sizeof ( target_ulong );
577
ths
authored
18 years ago
578
579
* ( target_ulong * ) ptr = tswapl ( env -> CP0_Cause );
ptr += sizeof ( target_ulong );
580
ths
authored
18 years ago
581
* ( target_ulong * ) ptr = tswapl ( env -> PC [ env -> current_tc ]);
ths
authored
18 years ago
582
ptr += sizeof ( target_ulong );
583
ths
authored
18 years ago
584
if ( env -> CP0_Config1 & ( 1 << CP0C1_FP ))
ths
authored
18 years ago
585
{
ths
authored
18 years ago
586
587
for ( i = 0 ; i < 32 ; i ++ )
{
ths
authored
18 years ago
588
* ( target_ulong * ) ptr = tswapl ( env -> fpu -> fpr [ i ]. fs [ FP_ENDIAN_IDX ]);
ths
authored
18 years ago
589
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
590
}
ths
authored
18 years ago
591
ths
authored
18 years ago
592
* ( target_ulong * ) ptr = tswapl ( env -> fpu -> fcr31 );
ths
authored
18 years ago
593
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
594
ths
authored
18 years ago
595
* ( target_ulong * ) ptr = tswapl ( env -> fpu -> fcr0 );
ths
authored
18 years ago
596
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
597
}
ths
authored
18 years ago
598
599
/* 32 FP registers, fsr, fir, fp. Not yet implemented. */
ths
authored
18 years ago
600
/* what's 'fp' mean here? */
601
602
603
604
return ptr - mem_buf ;
}
ths
authored
18 years ago
605
606
607
608
609
610
611
612
613
/* convert MIPS rounding mode in FCR31 to IEEE library */
static unsigned int ieee_rm [] =
{
float_round_nearest_even ,
float_round_to_zero ,
float_round_up ,
float_round_down
};
# define RESTORE_ROUNDING_MODE \
ths
authored
18 years ago
614
set_float_rounding_mode ( ieee_rm [ env -> fpu -> fcr31 & 3 ], & env -> fpu -> fp_status )
ths
authored
18 years ago
615
616
617
618
619
620
621
622
623
static void cpu_gdb_write_registers ( CPUState * env , uint8_t * mem_buf , int size )
{
int i ;
uint8_t * ptr ;
ptr = mem_buf ;
for ( i = 0 ; i < 32 ; i ++ )
{
ths
authored
18 years ago
624
env -> gpr [ i ][ env -> current_tc ] = tswapl ( * ( target_ulong * ) ptr );
ths
authored
18 years ago
625
ptr += sizeof ( target_ulong );
626
627
}
ths
authored
18 years ago
628
629
env -> CP0_Status = tswapl ( * ( target_ulong * ) ptr );
ptr += sizeof ( target_ulong );
630
ths
authored
18 years ago
631
env -> LO [ 0 ][ env -> current_tc ] = tswapl ( * ( target_ulong * ) ptr );
ths
authored
18 years ago
632
ptr += sizeof ( target_ulong );
633
ths
authored
18 years ago
634
env -> HI [ 0 ][ env -> current_tc ] = tswapl ( * ( target_ulong * ) ptr );
ths
authored
18 years ago
635
ptr += sizeof ( target_ulong );
636
ths
authored
18 years ago
637
638
env -> CP0_BadVAddr = tswapl ( * ( target_ulong * ) ptr );
ptr += sizeof ( target_ulong );
639
ths
authored
18 years ago
640
641
env -> CP0_Cause = tswapl ( * ( target_ulong * ) ptr );
ptr += sizeof ( target_ulong );
642
ths
authored
18 years ago
643
env -> PC [ env -> current_tc ] = tswapl ( * ( target_ulong * ) ptr );
ths
authored
18 years ago
644
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
645
ths
authored
18 years ago
646
if ( env -> CP0_Config1 & ( 1 << CP0C1_FP ))
ths
authored
18 years ago
647
{
ths
authored
18 years ago
648
649
for ( i = 0 ; i < 32 ; i ++ )
{
ths
authored
18 years ago
650
env -> fpu -> fpr [ i ]. fs [ FP_ENDIAN_IDX ] = tswapl ( * ( target_ulong * ) ptr );
ths
authored
18 years ago
651
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
652
}
ths
authored
18 years ago
653
ths
authored
18 years ago
654
env -> fpu -> fcr31 = tswapl ( * ( target_ulong * ) ptr ) & 0x0183FFFF ;
ths
authored
18 years ago
655
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
656
ths
authored
18 years ago
657
env -> fpu -> fcr0 = tswapl ( * ( target_ulong * ) ptr );
ths
authored
18 years ago
658
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
659
ths
authored
18 years ago
660
661
/* set rounding mode */
RESTORE_ROUNDING_MODE ;
ths
authored
18 years ago
662
663
# ifndef CONFIG_SOFTFLOAT
ths
authored
18 years ago
664
665
/* no floating point exception for native float */
SET_FP_ENABLE ( env -> fcr31 , 0 );
ths
authored
18 years ago
666
# endif
ths
authored
18 years ago
667
}
668
}
669
# elif defined ( TARGET_SH4 )
ths
authored
18 years ago
670
671
672
/* Hint: Use "set architecture sh4" in GDB to see fpu registers */
673
674
675
676
677
678
static int cpu_gdb_read_registers ( CPUState * env , uint8_t * mem_buf )
{
uint32_t * ptr = ( uint32_t * ) mem_buf ;
int i ;
# define SAVE ( x ) * ptr ++= tswapl ( x )
679
680
681
682
683
684
if (( env -> sr & ( SR_MD | SR_RB )) == ( SR_MD | SR_RB )) {
for ( i = 0 ; i < 8 ; i ++ ) SAVE ( env -> gregs [ i + 16 ]);
} else {
for ( i = 0 ; i < 8 ; i ++ ) SAVE ( env -> gregs [ i ]);
}
for ( i = 8 ; i < 16 ; i ++ ) SAVE ( env -> gregs [ i ]);
685
686
687
688
689
690
691
SAVE ( env -> pc );
SAVE ( env -> pr );
SAVE ( env -> gbr );
SAVE ( env -> vbr );
SAVE ( env -> mach );
SAVE ( env -> macl );
SAVE ( env -> sr );
ths
authored
18 years ago
692
693
694
695
696
697
698
699
SAVE ( env -> fpul );
SAVE ( env -> fpscr );
for ( i = 0 ; i < 16 ; i ++ )
SAVE ( env -> fregs [ i + (( env -> fpscr & FPSCR_FR ) ? 16 : 0 )]);
SAVE ( env -> ssr );
SAVE ( env -> spc );
for ( i = 0 ; i < 8 ; i ++ ) SAVE ( env -> gregs [ i ]);
for ( i = 0 ; i < 8 ; i ++ ) SAVE ( env -> gregs [ i + 16 ]);
700
701
702
703
704
705
706
707
708
return (( uint8_t * ) ptr - mem_buf );
}
static void cpu_gdb_write_registers ( CPUState * env , uint8_t * mem_buf , int size )
{
uint32_t * ptr = ( uint32_t * ) mem_buf ;
int i ;
# define LOAD ( x ) ( x ) =* ptr ++ ;
709
710
711
712
713
714
if (( env -> sr & ( SR_MD | SR_RB )) == ( SR_MD | SR_RB )) {
for ( i = 0 ; i < 8 ; i ++ ) LOAD ( env -> gregs [ i + 16 ]);
} else {
for ( i = 0 ; i < 8 ; i ++ ) LOAD ( env -> gregs [ i ]);
}
for ( i = 8 ; i < 16 ; i ++ ) LOAD ( env -> gregs [ i ]);
715
716
717
718
719
720
721
LOAD ( env -> pc );
LOAD ( env -> pr );
LOAD ( env -> gbr );
LOAD ( env -> vbr );
LOAD ( env -> mach );
LOAD ( env -> macl );
LOAD ( env -> sr );
ths
authored
18 years ago
722
723
724
725
726
727
728
729
LOAD ( env -> fpul );
LOAD ( env -> fpscr );
for ( i = 0 ; i < 16 ; i ++ )
LOAD ( env -> fregs [ i + (( env -> fpscr & FPSCR_FR ) ? 16 : 0 )]);
LOAD ( env -> ssr );
LOAD ( env -> spc );
for ( i = 0 ; i < 8 ; i ++ ) LOAD ( env -> gregs [ i ]);
for ( i = 0 ; i < 8 ; i ++ ) LOAD ( env -> gregs [ i + 16 ]);
730
}
ths
authored
17 years ago
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
# elif defined ( TARGET_CRIS )
static int cris_save_32 ( unsigned char * d , uint32_t value )
{
* d ++ = ( value );
* d ++ = ( value >>= 8 );
* d ++ = ( value >>= 8 );
* d ++ = ( value >>= 8 );
return 4 ;
}
static int cris_save_16 ( unsigned char * d , uint32_t value )
{
* d ++ = ( value );
* d ++ = ( value >>= 8 );
return 2 ;
}
static int cris_save_8 ( unsigned char * d , uint32_t value )
{
* d ++ = ( value );
return 1 ;
}
/* FIXME: this will bug on archs not supporting unaligned word accesses. */
static int cpu_gdb_read_registers ( CPUState * env , uint8_t * mem_buf )
{
uint8_t * ptr = mem_buf ;
uint8_t srs ;
int i ;
for ( i = 0 ; i < 16 ; i ++ )
ptr += cris_save_32 ( ptr , env -> regs [ i ]);
srs = env -> pregs [ SR_SRS ];
ptr += cris_save_8 ( ptr , env -> pregs [ 0 ]);
ptr += cris_save_8 ( ptr , env -> pregs [ 1 ]);
ptr += cris_save_32 ( ptr , env -> pregs [ 2 ]);
ptr += cris_save_8 ( ptr , srs );
ptr += cris_save_16 ( ptr , env -> pregs [ 4 ]);
for ( i = 5 ; i < 16 ; i ++ )
ptr += cris_save_32 ( ptr , env -> pregs [ i ]);
ptr += cris_save_32 ( ptr , env -> pc );
for ( i = 0 ; i < 16 ; i ++ )
ptr += cris_save_32 ( ptr , env -> sregs [ srs ][ i ]);
return (( uint8_t * ) ptr - mem_buf );
}
static void cpu_gdb_write_registers ( CPUState * env , uint8_t * mem_buf , int size )
{
uint32_t * ptr = ( uint32_t * ) mem_buf ;
int i ;
# define LOAD ( x ) ( x ) =* ptr ++ ;
for ( i = 0 ; i < 16 ; i ++ ) LOAD ( env -> regs [ i ]);
LOAD ( env -> pc );
}
791
# else
792
793
794
795
796
797
798
799
800
801
static int cpu_gdb_read_registers ( CPUState * env , uint8_t * mem_buf )
{
return 0 ;
}
static void cpu_gdb_write_registers ( CPUState * env , uint8_t * mem_buf , int size )
{
}
# endif
802
803
static int gdb_handle_packet ( GDBState * s , CPUState * env , const char * line_buf )
804
805
{
const char * p ;
806
int ch , reg_size , type ;
807
char buf [ 4096 ];
ths
authored
17 years ago
808
uint8_t mem_buf [ 4096 ];
809
uint32_t * registers ;
810
target_ulong addr , len ;
ths
authored
18 years ago
811
812
813
814
815
816
817
818
# ifdef DEBUG_GDB
printf ( "command='%s' \n " , line_buf );
# endif
p = line_buf ;
ch = * p ++ ;
switch ( ch ) {
case '?' :
819
/* TODO: Make this return the correct value for user-mode. */
820
821
822
823
824
snprintf ( buf , sizeof ( buf ), "S%02x" , SIGTRAP );
put_packet ( s , buf );
break ;
case 'c' :
if ( * p != '\0' ) {
825
addr = strtoull ( p , ( char ** ) & p , 16 );
826
# if defined ( TARGET_I386 )
827
env -> eip = addr ;
828
# elif defined ( TARGET_PPC )
829
env -> nip = addr ;
830
831
832
# elif defined ( TARGET_SPARC )
env -> pc = addr ;
env -> npc = addr + 4 ;
833
834
# elif defined ( TARGET_ARM )
env -> regs [ 15 ] = addr ;
835
# elif defined ( TARGET_SH4 )
ths
authored
18 years ago
836
837
env -> pc = addr ;
# elif defined ( TARGET_MIPS )
ths
authored
18 years ago
838
env -> PC [ env -> current_tc ] = addr ;
ths
authored
17 years ago
839
840
# elif defined ( TARGET_CRIS )
env -> pc = addr ;
841
# endif
842
}
843
844
845
846
847
848
# ifdef CONFIG_USER_ONLY
s -> running_state = 1 ;
# else
vm_start ();
# endif
return RS_IDLE ;
849
850
case 's' :
if ( * p != '\0' ) {
ths
authored
18 years ago
851
addr = strtoull ( p , ( char ** ) & p , 16 );
852
# if defined ( TARGET_I386 )
853
env -> eip = addr ;
854
# elif defined ( TARGET_PPC )
855
env -> nip = addr ;
856
857
858
# elif defined ( TARGET_SPARC )
env -> pc = addr ;
env -> npc = addr + 4 ;
859
860
# elif defined ( TARGET_ARM )
env -> regs [ 15 ] = addr ;
861
# elif defined ( TARGET_SH4 )
ths
authored
18 years ago
862
863
env -> pc = addr ;
# elif defined ( TARGET_MIPS )
ths
authored
18 years ago
864
env -> PC [ env -> current_tc ] = addr ;
ths
authored
17 years ago
865
866
# elif defined ( TARGET_CRIS )
env -> pc = addr ;
867
# endif
868
869
}
cpu_single_step ( env , 1 );
870
871
872
873
874
875
# ifdef CONFIG_USER_ONLY
s -> running_state = 1 ;
# else
vm_start ();
# endif
return RS_IDLE ;
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
case 'F' :
{
target_ulong ret ;
target_ulong err ;
ret = strtoull ( p , ( char ** ) & p , 16 );
if ( * p == ',' ) {
p ++ ;
err = strtoull ( p , ( char ** ) & p , 16 );
} else {
err = 0 ;
}
if ( * p == ',' )
p ++ ;
type = * p ;
if ( gdb_current_syscall_cb )
gdb_current_syscall_cb ( s -> env , ret , err );
if ( type == 'C' ) {
put_packet ( s , "T02" );
} else {
# ifdef CONFIG_USER_ONLY
s -> running_state = 1 ;
# else
vm_start ();
# endif
}
}
break ;
904
905
906
907
908
909
910
911
912
913
914
915
916
case 'g' :
reg_size = cpu_gdb_read_registers ( env , mem_buf );
memtohex ( buf , mem_buf , reg_size );
put_packet ( s , buf );
break ;
case 'G' :
registers = ( void * ) mem_buf ;
len = strlen ( p ) / 2 ;
hextomem (( uint8_t * ) registers , p , len );
cpu_gdb_write_registers ( env , mem_buf , len );
put_packet ( s , "OK" );
break ;
case 'm' :
917
addr = strtoull ( p , ( char ** ) & p , 16 );
918
919
if ( * p == ',' )
p ++ ;
920
len = strtoull ( p , NULL , 16 );
921
922
923
924
925
926
if ( cpu_memory_rw_debug ( env , addr , mem_buf , len , 0 ) != 0 ) {
put_packet ( s , "E14" );
} else {
memtohex ( buf , mem_buf , len );
put_packet ( s , buf );
}
927
928
break ;
case 'M' :
929
addr = strtoull ( p , ( char ** ) & p , 16 );
930
931
if ( * p == ',' )
p ++ ;
932
len = strtoull ( p , ( char ** ) & p , 16 );
933
if ( * p == ':' )
934
935
936
p ++ ;
hextomem ( mem_buf , p , len );
if ( cpu_memory_rw_debug ( env , addr , mem_buf , len , 1 ) != 0 )
937
put_packet ( s , "E14" );
938
939
940
941
942
943
944
else
put_packet ( s , "OK" );
break ;
case 'Z' :
type = strtoul ( p , ( char ** ) & p , 16 );
if ( * p == ',' )
p ++ ;
945
addr = strtoull ( p , ( char ** ) & p , 16 );
946
947
if ( * p == ',' )
p ++ ;
948
len = strtoull ( p , ( char ** ) & p , 16 );
949
950
951
952
if ( type == 0 || type == 1 ) {
if ( cpu_breakpoint_insert ( env , addr ) < 0 )
goto breakpoint_error ;
put_packet ( s , "OK" );
953
954
955
956
957
958
# ifndef CONFIG_USER_ONLY
} else if ( type == 2 ) {
if ( cpu_watchpoint_insert ( env , addr ) < 0 )
goto breakpoint_error ;
put_packet ( s , "OK" );
# endif
959
960
} else {
breakpoint_error :
961
put_packet ( s , "E22" );
962
963
964
965
966
967
}
break ;
case 'z' :
type = strtoul ( p , ( char ** ) & p , 16 );
if ( * p == ',' )
p ++ ;
968
addr = strtoull ( p , ( char ** ) & p , 16 );
969
970
if ( * p == ',' )
p ++ ;
971
len = strtoull ( p , ( char ** ) & p , 16 );
972
973
974
if ( type == 0 || type == 1 ) {
cpu_breakpoint_remove ( env , addr );
put_packet ( s , "OK" );
975
976
977
978
979
# ifndef CONFIG_USER_ONLY
} else if ( type == 2 ) {
cpu_watchpoint_remove ( env , addr );
put_packet ( s , "OK" );
# endif
980
981
982
983
} else {
goto breakpoint_error ;
}
break ;
ths
authored
18 years ago
984
# ifdef CONFIG_LINUX_USER
985
986
987
988
case 'q' :
if ( strncmp ( p , "Offsets" , 7 ) == 0 ) {
TaskState * ts = env -> opaque ;
ths
authored
18 years ago
989
990
991
992
993
sprintf ( buf ,
"Text=" TARGET_FMT_lx ";Data=" TARGET_FMT_lx ";Bss=" TARGET_FMT_lx ,
ts -> info -> code_offset ,
ts -> info -> data_offset ,
ts -> info -> data_offset );
994
995
996
997
998
put_packet ( s , buf );
break ;
}
/* Fall through. */
# endif
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
default :
// unknown_command :
/* put empty packet */
buf [ 0 ] = '\0' ;
put_packet ( s , buf );
break ;
}
return RS_IDLE ;
}
1009
1010
extern void tb_flush ( CPUState * env );
1011
# ifndef CONFIG_USER_ONLY
1012
1013
1014
1015
1016
1017
static void gdb_vm_stopped ( void * opaque , int reason )
{
GDBState * s = opaque ;
char buf [ 256 ];
int ret ;
1018
1019
1020
if ( s -> state == RS_SYSCALL )
return ;
1021
/* disable single step if it was enable */
1022
cpu_single_step ( s -> env , 0 );
1023
1024
if ( reason == EXCP_DEBUG ) {
1025
if ( s -> env -> watchpoint_hit ) {
1026
1027
snprintf ( buf , sizeof ( buf ), "T%02xwatch:" TARGET_FMT_lx ";" ,
SIGTRAP ,
1028
1029
1030
1031
1032
s -> env -> watchpoint [ s -> env -> watchpoint_hit - 1 ]. vaddr );
put_packet ( s , buf );
s -> env -> watchpoint_hit = 0 ;
return ;
}
1033
tb_flush ( s -> env );
1034
ret = SIGTRAP ;
1035
1036
1037
} else if ( reason == EXCP_INTERRUPT ) {
ret = SIGINT ;
} else {
1038
ret = 0 ;
1039
}
1040
1041
1042
snprintf ( buf , sizeof ( buf ), "S%02x" , ret );
put_packet ( s , buf );
}
1043
# endif
1044
1045
1046
/* Send a gdb syscall request .
This accepts limited printf - style format specifiers , specifically :
1047
1048
1049
% x - target_ulong argument printed in hex .
% lx - 64 - bit argument printed in hex .
% s - string pointer ( target_ulong ) and length ( int ) pair . */
1050
1051
1052
1053
1054
1055
void gdb_do_syscall ( gdb_syscall_complete_cb cb , char * fmt , ...)
{
va_list va ;
char buf [ 256 ];
char * p ;
target_ulong addr ;
1056
uint64_t i64 ;
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
GDBState * s ;
s = gdb_syscall_state ;
if ( ! s )
return ;
gdb_current_syscall_cb = cb ;
s -> state = RS_SYSCALL ;
# ifndef CONFIG_USER_ONLY
vm_stop ( EXCP_DEBUG );
# endif
s -> state = RS_IDLE ;
va_start ( va , fmt );
p = buf ;
* ( p ++ ) = 'F' ;
while ( * fmt ) {
if ( * fmt == '%' ) {
fmt ++ ;
switch ( * fmt ++ ) {
case 'x' :
addr = va_arg ( va , target_ulong );
p += sprintf ( p , TARGET_FMT_lx , addr );
break ;
1079
1080
1081
1082
1083
1084
case 'l' :
if ( * ( fmt ++ ) != 'x' )
goto bad_format ;
i64 = va_arg ( va , uint64_t );
p += sprintf ( p , "%" PRIx64 , i64 );
break ;
1085
1086
1087
1088
1089
case 's' :
addr = va_arg ( va , target_ulong );
p += sprintf ( p , TARGET_FMT_lx "/%x" , addr , va_arg ( va , int ));
break ;
default :
1090
bad_format :
1091
1092
1093
1094
1095
1096
1097
1098
fprintf ( stderr , "gdbstub: Bad syscall format string '%s' \n " ,
fmt - 1 );
break ;
}
} else {
* ( p ++ ) = * ( fmt ++ );
}
}
1099
* p = 0 ;
1100
1101
1102
1103
1104
1105
1106
1107
1108
va_end ( va );
put_packet ( s , buf );
# ifdef CONFIG_USER_ONLY
gdb_handlesig ( s -> env , 0 );
# else
cpu_interrupt ( s -> env , CPU_INTERRUPT_EXIT );
# endif
}
1109
static void gdb_read_byte ( GDBState * s , int ch )
1110
{
1111
CPUState * env = s -> env ;
1112
1113
1114
int i , csum ;
char reply [ 1 ];
1115
# ifndef CONFIG_USER_ONLY
1116
1117
1118
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if ( s -> last_packet_len ) {
/* Waiting for a response to the last packet . If we see the start
of a new command then abandon the previous response . */
if ( ch == '-' ) {
# ifdef DEBUG_GDB
printf ( "Got NACK, retransmitting \n " );
# endif
put_buffer ( s , s -> last_packet , s -> last_packet_len );
}
# ifdef DEBUG_GDB
else if ( ch == '+' )
printf ( "Got ACK \n " );
else
printf ( "Got '%c' when expecting ACK/NACK \n " , ch );
# endif
if ( ch == '+' || ch == '$' )
s -> last_packet_len = 0 ;
if ( ch != '$' )
return ;
}
1136
1137
1138
1139
if ( vm_running ) {
/* when the CPU is running , we cannot do anything except stop
it when receiving a char */
vm_stop ( EXCP_INTERRUPT );
ths
authored
18 years ago
1140
} else
1141
# endif
1142
{
1143
1144
1145
1146
1147
switch ( s -> state ) {
case RS_IDLE :
if ( ch == '$' ) {
s -> line_buf_index = 0 ;
s -> state = RS_GETLINE ;
1148
}
1149
break ;
1150
1151
1152
1153
1154
case RS_GETLINE :
if ( ch == '#' ) {
s -> state = RS_CHKSUM1 ;
} else if ( s -> line_buf_index >= sizeof ( s -> line_buf ) - 1 ) {
s -> state = RS_IDLE ;
1155
} else {
1156
s -> line_buf [ s -> line_buf_index ++ ] = ch ;
1157
1158
}
break ;
1159
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1173
case RS_CHKSUM1 :
s -> line_buf [ s -> line_buf_index ] = '\0' ;
s -> line_csum = fromhex ( ch ) << 4 ;
s -> state = RS_CHKSUM2 ;
break ;
case RS_CHKSUM2 :
s -> line_csum |= fromhex ( ch );
csum = 0 ;
for ( i = 0 ; i < s -> line_buf_index ; i ++ ) {
csum += s -> line_buf [ i ];
}
if ( s -> line_csum != ( csum & 0xff )) {
reply [ 0 ] = '-' ;
put_buffer ( s , reply , 1 );
s -> state = RS_IDLE ;
1174
} else {
1175
1176
reply [ 0 ] = '+' ;
put_buffer ( s , reply , 1 );
1177
s -> state = gdb_handle_packet ( s , env , s -> line_buf );
1178
1179
}
break ;
1180
1181
default :
abort ();
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1185
}
}
}
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1210
# ifdef CONFIG_USER_ONLY
int
gdb_handlesig ( CPUState * env , int sig )
{
GDBState * s ;
char buf [ 256 ];
int n ;
if ( gdbserver_fd < 0 )
return sig ;
s = & gdbserver_state ;
/* disable single step if it was enabled */
cpu_single_step ( env , 0 );
tb_flush ( env );
if ( sig != 0 )
{
snprintf ( buf , sizeof ( buf ), "S%02x" , sig );
put_packet ( s , buf );
}
sig = 0 ;
s -> state = RS_IDLE ;
1211
1212
s -> running_state = 0 ;
while ( s -> running_state == 0 ) {
1213
1214
1215
1216
1217
1218
n = read ( s -> fd , buf , 256 );
if ( n > 0 )
{
int i ;
for ( i = 0 ; i < n ; i ++ )
1219
gdb_read_byte ( s , buf [ i ]);
1220
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1223
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1225
1226
}
else if ( n == 0 || errno != EAGAIN )
{
/* XXX : Connection closed . Should probably wait for annother
connection before continuing . */
return sig ;
}
1227
}
1228
1229
return sig ;
}
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1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
/* Tell the remote gdb that the process has exited. */
void gdb_exit ( CPUState * env , int code )
{
GDBState * s ;
char buf [ 4 ];
if ( gdbserver_fd < 0 )
return ;
s = & gdbserver_state ;
snprintf ( buf , sizeof ( buf ), "W%02x" , code );
put_packet ( s , buf );
}
1246
1247
static void gdb_accept ( void * opaque )
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
{
GDBState * s ;
struct sockaddr_in sockaddr ;
socklen_t len ;
int val , fd ;
for (;;) {
len = sizeof ( sockaddr );
fd = accept ( gdbserver_fd , ( struct sockaddr * ) & sockaddr , & len );
if ( fd < 0 && errno != EINTR ) {
perror ( "accept" );
return ;
} else if ( fd >= 0 ) {
1261
1262
1263
break ;
}
}
1264
1265
1266
/* set short latency */
val = 1 ;
1267
setsockopt ( fd , IPPROTO_TCP , TCP_NODELAY , ( char * ) & val , sizeof ( val ));
ths
authored
18 years ago
1268
1269
1270
s = & gdbserver_state ;
memset ( s , 0 , sizeof ( GDBState ));
1271
s -> env = first_cpu ; /* XXX: allow to change CPU */
1272
1273
s -> fd = fd ;
1274
1275
gdb_syscall_state = s ;
1276
1277
1278
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1280
1281
1282
1283
1284
1285
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1289
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1291
fcntl ( fd , F_SETFL , O_NONBLOCK );
}
static int gdbserver_open ( int port )
{
struct sockaddr_in sockaddr ;
int fd , val , ret ;
fd = socket ( PF_INET , SOCK_STREAM , 0 );
if ( fd < 0 ) {
perror ( "socket" );
return - 1 ;
}
/* allow fast reuse */
val = 1 ;
1292
setsockopt ( fd , SOL_SOCKET , SO_REUSEADDR , ( char * ) & val , sizeof ( val ));
1293
1294
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1297
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1299
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1302
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1304
1305
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1307
1308
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1313
1314
1315
sockaddr . sin_family = AF_INET ;
sockaddr . sin_port = htons ( port );
sockaddr . sin_addr . s_addr = 0 ;
ret = bind ( fd , ( struct sockaddr * ) & sockaddr , sizeof ( sockaddr ));
if ( ret < 0 ) {
perror ( "bind" );
return - 1 ;
}
ret = listen ( fd , 0 );
if ( ret < 0 ) {
perror ( "listen" );
return - 1 ;
}
return fd ;
}
int gdbserver_start ( int port )
{
gdbserver_fd = gdbserver_open ( port );
if ( gdbserver_fd < 0 )
return - 1 ;
/* accept connections */
1316
gdb_accept ( NULL );
1317
1318
return 0 ;
}
1319
# else
ths
authored
18 years ago
1320
static int gdb_chr_can_receive ( void * opaque )
1321
1322
1323
1324
{
return 1 ;
}
ths
authored
18 years ago
1325
static void gdb_chr_receive ( void * opaque , const uint8_t * buf , int size )
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
{
GDBState * s = opaque ;
int i ;
for ( i = 0 ; i < size ; i ++ ) {
gdb_read_byte ( s , buf [ i ]);
}
}
static void gdb_chr_event ( void * opaque , int event )
{
switch ( event ) {
case CHR_EVENT_RESET :
vm_stop ( EXCP_INTERRUPT );
1340
gdb_syscall_state = opaque ;
1341
1342
1343
1344
1345
1346
break ;
default :
break ;
}
}
1347
int gdbserver_start ( const char * port )
1348
1349
{
GDBState * s ;
1350
1351
1352
1353
1354
1355
1356
char gdbstub_port_name [ 128 ];
int port_num ;
char * p ;
CharDriverState * chr ;
if ( ! port || !* port )
return - 1 ;
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
port_num = strtol ( port , & p , 10 );
if ( * p == 0 ) {
/* A numeric value is interpreted as a port number. */
snprintf ( gdbstub_port_name , sizeof ( gdbstub_port_name ),
"tcp::%d,nowait,nodelay,server" , port_num );
port = gdbstub_port_name ;
}
chr = qemu_chr_open ( port );
1367
1368
1369
1370
1371
1372
1373
1374
1375
if ( ! chr )
return - 1 ;
s = qemu_mallocz ( sizeof ( GDBState ));
if ( ! s ) {
return - 1 ;
}
s -> env = first_cpu ; /* XXX: allow to change CPU */
s -> chr = chr ;
ths
authored
18 years ago
1376
qemu_chr_add_handlers ( chr , gdb_chr_can_receive , gdb_chr_receive ,
1377
1378
gdb_chr_event , s );
qemu_add_vm_stop_handler ( gdb_vm_stopped , s );
1379
1380
return 0 ;
}
1381
# endif