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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 ( env -> msr );
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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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ppc_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 = ( int32_t ) tswap32 ( env -> CP0_Status );
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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
17 years ago
578
* ( target_ulong * ) ptr = ( int32_t ) tswap32 ( env -> CP0_Cause );
ths
authored
18 years ago
579
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
17 years ago
588
589
590
591
if ( env -> CP0_Status & ( 1 << CP0St_FR ))
* ( target_ulong * ) ptr = tswapl ( env -> fpu -> fpr [ i ]. d );
else
* ( target_ulong * ) ptr = tswap32 ( env -> fpu -> fpr [ i ]. w [ FP_ENDIAN_IDX ]);
ths
authored
18 years ago
592
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
593
}
ths
authored
18 years ago
594
ths
authored
17 years ago
595
* ( target_ulong * ) ptr = ( int32_t ) tswap32 ( env -> fpu -> fcr31 );
ths
authored
18 years ago
596
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
597
ths
authored
17 years ago
598
* ( target_ulong * ) ptr = ( int32_t ) tswap32 ( env -> fpu -> fcr0 );
ths
authored
18 years ago
599
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
600
}
ths
authored
18 years ago
601
ths
authored
17 years ago
602
603
604
605
606
607
608
609
610
611
612
613
614
615
/* "fp", pseudo frame pointer. Not yet implemented in gdb. */
* ( target_ulong * ) ptr = 0 ;
ptr += sizeof ( target_ulong );
/* Registers for embedded use, we just pad them. */
for ( i = 0 ; i < 16 ; i ++ )
{
* ( target_ulong * ) ptr = 0 ;
ptr += sizeof ( target_ulong );
}
/* Processor ID. */
* ( target_ulong * ) ptr = ( int32_t ) tswap32 ( env -> CP0_PRid );
ptr += sizeof ( target_ulong );
616
617
618
619
return ptr - mem_buf ;
}
ths
authored
18 years ago
620
621
622
623
624
625
626
627
628
/* 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
629
set_float_rounding_mode ( ieee_rm [ env -> fpu -> fcr31 & 3 ], & env -> fpu -> fp_status )
ths
authored
18 years ago
630
631
632
633
634
635
636
637
638
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
639
env -> gpr [ i ][ env -> current_tc ] = tswapl ( * ( target_ulong * ) ptr );
ths
authored
18 years ago
640
ptr += sizeof ( target_ulong );
641
642
}
ths
authored
18 years ago
643
644
env -> CP0_Status = tswapl ( * ( target_ulong * ) ptr );
ptr += sizeof ( target_ulong );
645
ths
authored
18 years ago
646
env -> LO [ 0 ][ env -> current_tc ] = tswapl ( * ( target_ulong * ) ptr );
ths
authored
18 years ago
647
ptr += sizeof ( target_ulong );
648
ths
authored
18 years ago
649
env -> HI [ 0 ][ env -> current_tc ] = tswapl ( * ( target_ulong * ) ptr );
ths
authored
18 years ago
650
ptr += sizeof ( target_ulong );
651
ths
authored
18 years ago
652
653
env -> CP0_BadVAddr = tswapl ( * ( target_ulong * ) ptr );
ptr += sizeof ( target_ulong );
654
ths
authored
18 years ago
655
656
env -> CP0_Cause = tswapl ( * ( target_ulong * ) ptr );
ptr += sizeof ( target_ulong );
657
ths
authored
18 years ago
658
env -> PC [ env -> current_tc ] = tswapl ( * ( target_ulong * ) ptr );
ths
authored
18 years ago
659
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
660
ths
authored
18 years ago
661
if ( env -> CP0_Config1 & ( 1 << CP0C1_FP ))
ths
authored
18 years ago
662
{
ths
authored
18 years ago
663
664
for ( i = 0 ; i < 32 ; i ++ )
{
ths
authored
17 years ago
665
666
667
668
if ( env -> CP0_Status & ( 1 << CP0St_FR ))
env -> fpu -> fpr [ i ]. d = tswapl ( * ( target_ulong * ) ptr );
else
env -> fpu -> fpr [ i ]. w [ FP_ENDIAN_IDX ] = tswapl ( * ( target_ulong * ) ptr );
ths
authored
18 years ago
669
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
670
}
ths
authored
18 years ago
671
ths
authored
17 years ago
672
env -> fpu -> fcr31 = tswapl ( * ( target_ulong * ) ptr ) & 0xFF83FFFF ;
ths
authored
18 years ago
673
ptr += sizeof ( target_ulong );
ths
authored
18 years ago
674
ths
authored
17 years ago
675
/* The remaining registers are assumed to be read-only. */
ths
authored
18 years ago
676
ths
authored
18 years ago
677
678
/* set rounding mode */
RESTORE_ROUNDING_MODE ;
ths
authored
18 years ago
679
680
# ifndef CONFIG_SOFTFLOAT
ths
authored
18 years ago
681
682
/* no floating point exception for native float */
SET_FP_ENABLE ( env -> fcr31 , 0 );
ths
authored
18 years ago
683
# endif
ths
authored
18 years ago
684
}
685
}
686
# elif defined ( TARGET_SH4 )
ths
authored
18 years ago
687
688
689
/* Hint: Use "set architecture sh4" in GDB to see fpu registers */
690
691
692
693
694
695
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 )
696
697
698
699
700
701
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 ]);
702
703
704
705
706
707
708
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
709
710
711
712
713
714
715
716
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 ]);
717
718
719
720
721
722
723
724
725
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 ++ ;
726
727
728
729
730
731
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 ]);
732
733
734
735
736
737
738
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
739
740
741
742
743
744
745
746
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 ]);
747
}
ths
authored
17 years ago
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
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
# 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 );
}
808
# else
809
810
811
812
813
814
815
816
817
818
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
819
820
static int gdb_handle_packet ( GDBState * s , CPUState * env , const char * line_buf )
821
822
{
const char * p ;
823
int ch , reg_size , type ;
824
char buf [ 4096 ];
ths
authored
17 years ago
825
uint8_t mem_buf [ 4096 ];
826
uint32_t * registers ;
827
target_ulong addr , len ;
ths
authored
18 years ago
828
829
830
831
832
833
834
835
# ifdef DEBUG_GDB
printf ( "command='%s' \n " , line_buf );
# endif
p = line_buf ;
ch = * p ++ ;
switch ( ch ) {
case '?' :
836
/* TODO: Make this return the correct value for user-mode. */
837
838
839
840
841
snprintf ( buf , sizeof ( buf ), "S%02x" , SIGTRAP );
put_packet ( s , buf );
break ;
case 'c' :
if ( * p != '\0' ) {
842
addr = strtoull ( p , ( char ** ) & p , 16 );
843
# if defined ( TARGET_I386 )
844
env -> eip = addr ;
845
# elif defined ( TARGET_PPC )
846
env -> nip = addr ;
847
848
849
# elif defined ( TARGET_SPARC )
env -> pc = addr ;
env -> npc = addr + 4 ;
850
851
# elif defined ( TARGET_ARM )
env -> regs [ 15 ] = addr ;
852
# elif defined ( TARGET_SH4 )
ths
authored
18 years ago
853
854
env -> pc = addr ;
# elif defined ( TARGET_MIPS )
ths
authored
18 years ago
855
env -> PC [ env -> current_tc ] = addr ;
ths
authored
17 years ago
856
857
# elif defined ( TARGET_CRIS )
env -> pc = addr ;
858
# endif
859
}
860
861
862
863
864
865
# ifdef CONFIG_USER_ONLY
s -> running_state = 1 ;
# else
vm_start ();
# endif
return RS_IDLE ;
866
867
case 's' :
if ( * p != '\0' ) {
ths
authored
18 years ago
868
addr = strtoull ( p , ( char ** ) & p , 16 );
869
# if defined ( TARGET_I386 )
870
env -> eip = addr ;
871
# elif defined ( TARGET_PPC )
872
env -> nip = addr ;
873
874
875
# elif defined ( TARGET_SPARC )
env -> pc = addr ;
env -> npc = addr + 4 ;
876
877
# elif defined ( TARGET_ARM )
env -> regs [ 15 ] = addr ;
878
# elif defined ( TARGET_SH4 )
ths
authored
18 years ago
879
880
env -> pc = addr ;
# elif defined ( TARGET_MIPS )
ths
authored
18 years ago
881
env -> PC [ env -> current_tc ] = addr ;
ths
authored
17 years ago
882
883
# elif defined ( TARGET_CRIS )
env -> pc = addr ;
884
# endif
885
886
}
cpu_single_step ( env , 1 );
887
888
889
890
891
892
# ifdef CONFIG_USER_ONLY
s -> running_state = 1 ;
# else
vm_start ();
# endif
return RS_IDLE ;
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
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 ;
921
922
923
924
925
926
927
928
929
930
931
932
933
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' :
934
addr = strtoull ( p , ( char ** ) & p , 16 );
935
936
if ( * p == ',' )
p ++ ;
937
len = strtoull ( p , NULL , 16 );
938
939
940
941
942
943
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 );
}
944
945
break ;
case 'M' :
946
addr = strtoull ( p , ( char ** ) & p , 16 );
947
948
if ( * p == ',' )
p ++ ;
949
len = strtoull ( p , ( char ** ) & p , 16 );
950
if ( * p == ':' )
951
952
953
p ++ ;
hextomem ( mem_buf , p , len );
if ( cpu_memory_rw_debug ( env , addr , mem_buf , len , 1 ) != 0 )
954
put_packet ( s , "E14" );
955
956
957
958
959
960
961
else
put_packet ( s , "OK" );
break ;
case 'Z' :
type = strtoul ( p , ( char ** ) & p , 16 );
if ( * p == ',' )
p ++ ;
962
addr = strtoull ( p , ( char ** ) & p , 16 );
963
964
if ( * p == ',' )
p ++ ;
965
len = strtoull ( p , ( char ** ) & p , 16 );
966
967
968
969
if ( type == 0 || type == 1 ) {
if ( cpu_breakpoint_insert ( env , addr ) < 0 )
goto breakpoint_error ;
put_packet ( s , "OK" );
970
971
972
973
974
975
# ifndef CONFIG_USER_ONLY
} else if ( type == 2 ) {
if ( cpu_watchpoint_insert ( env , addr ) < 0 )
goto breakpoint_error ;
put_packet ( s , "OK" );
# endif
976
977
} else {
breakpoint_error :
978
put_packet ( s , "E22" );
979
980
981
982
983
984
}
break ;
case 'z' :
type = strtoul ( p , ( char ** ) & p , 16 );
if ( * p == ',' )
p ++ ;
985
addr = strtoull ( p , ( char ** ) & p , 16 );
986
987
if ( * p == ',' )
p ++ ;
988
len = strtoull ( p , ( char ** ) & p , 16 );
989
990
991
if ( type == 0 || type == 1 ) {
cpu_breakpoint_remove ( env , addr );
put_packet ( s , "OK" );
992
993
994
995
996
# ifndef CONFIG_USER_ONLY
} else if ( type == 2 ) {
cpu_watchpoint_remove ( env , addr );
put_packet ( s , "OK" );
# endif
997
998
999
1000
} else {
goto breakpoint_error ;
}
break ;
ths
authored
18 years ago
1001
# ifdef CONFIG_LINUX_USER
1002
1003
1004
1005
case 'q' :
if ( strncmp ( p , "Offsets" , 7 ) == 0 ) {
TaskState * ts = env -> opaque ;
ths
authored
18 years ago
1006
1007
1008
1009
1010
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 );
1011
1012
1013
1014
1015
put_packet ( s , buf );
break ;
}
/* Fall through. */
# endif
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
default :
// unknown_command :
/* put empty packet */
buf [ 0 ] = '\0' ;
put_packet ( s , buf );
break ;
}
return RS_IDLE ;
}
1026
1027
extern void tb_flush ( CPUState * env );
1028
# ifndef CONFIG_USER_ONLY
1029
1030
1031
1032
1033
1034
static void gdb_vm_stopped ( void * opaque , int reason )
{
GDBState * s = opaque ;
char buf [ 256 ];
int ret ;
1035
1036
1037
if ( s -> state == RS_SYSCALL )
return ;
1038
/* disable single step if it was enable */
1039
cpu_single_step ( s -> env , 0 );
1040
1041
if ( reason == EXCP_DEBUG ) {
1042
if ( s -> env -> watchpoint_hit ) {
1043
1044
snprintf ( buf , sizeof ( buf ), "T%02xwatch:" TARGET_FMT_lx ";" ,
SIGTRAP ,
1045
1046
1047
1048
1049
s -> env -> watchpoint [ s -> env -> watchpoint_hit - 1 ]. vaddr );
put_packet ( s , buf );
s -> env -> watchpoint_hit = 0 ;
return ;
}
1050
tb_flush ( s -> env );
1051
ret = SIGTRAP ;
1052
1053
1054
} else if ( reason == EXCP_INTERRUPT ) {
ret = SIGINT ;
} else {
1055
ret = 0 ;
1056
}
1057
1058
1059
snprintf ( buf , sizeof ( buf ), "S%02x" , ret );
put_packet ( s , buf );
}
1060
# endif
1061
1062
1063
/* Send a gdb syscall request .
This accepts limited printf - style format specifiers , specifically :
1064
1065
1066
% x - target_ulong argument printed in hex .
% lx - 64 - bit argument printed in hex .
% s - string pointer ( target_ulong ) and length ( int ) pair . */
1067
1068
1069
1070
1071
1072
void gdb_do_syscall ( gdb_syscall_complete_cb cb , char * fmt , ...)
{
va_list va ;
char buf [ 256 ];
char * p ;
target_ulong addr ;
1073
uint64_t i64 ;
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
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 ;
1096
1097
1098
1099
1100
1101
case 'l' :
if ( * ( fmt ++ ) != 'x' )
goto bad_format ;
i64 = va_arg ( va , uint64_t );
p += sprintf ( p , "%" PRIx64 , i64 );
break ;
1102
1103
1104
1105
1106
case 's' :
addr = va_arg ( va , target_ulong );
p += sprintf ( p , TARGET_FMT_lx "/%x" , addr , va_arg ( va , int ));
break ;
default :
1107
bad_format :
1108
1109
1110
1111
1112
1113
1114
1115
fprintf ( stderr , "gdbstub: Bad syscall format string '%s' \n " ,
fmt - 1 );
break ;
}
} else {
* ( p ++ ) = * ( fmt ++ );
}
}
1116
* p = 0 ;
1117
1118
1119
1120
1121
1122
1123
1124
1125
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
}
1126
static void gdb_read_byte ( GDBState * s , int ch )
1127
{
1128
CPUState * env = s -> env ;
1129
1130
1131
int i , csum ;
char reply [ 1 ];
1132
# ifndef CONFIG_USER_ONLY
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
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 != '$' )
return ;
}
1153
1154
1155
1156
if ( vm_running ) {
/* when the CPU is running , we cannot do anything except stop
it when receiving a char */
vm_stop ( EXCP_INTERRUPT );
ths
authored
18 years ago
1157
} else
1158
# endif
1159
{
1160
1161
1162
1163
1164
switch ( s -> state ) {
case RS_IDLE :
if ( ch == '$' ) {
s -> line_buf_index = 0 ;
s -> state = RS_GETLINE ;
1165
}
1166
break ;
1167
1168
1169
1170
1171
case RS_GETLINE :
if ( ch == '#' ) {
s -> state = RS_CHKSUM1 ;
} else if ( s -> line_buf_index >= sizeof ( s -> line_buf ) - 1 ) {
s -> state = RS_IDLE ;
1172
} else {
1173
s -> line_buf [ s -> line_buf_index ++ ] = ch ;
1174
1175
}
break ;
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
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 ;
1191
} else {
1192
1193
reply [ 0 ] = '+' ;
put_buffer ( s , reply , 1 );
1194
s -> state = gdb_handle_packet ( s , env , s -> line_buf );
1195
1196
}
break ;
1197
1198
default :
abort ();
1199
1200
1201
1202
}
}
}
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
# 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 ;
1228
1229
s -> running_state = 0 ;
while ( s -> running_state == 0 ) {
1230
1231
1232
1233
1234
1235
n = read ( s -> fd , buf , 256 );
if ( n > 0 )
{
int i ;
for ( i = 0 ; i < n ; i ++ )
1236
gdb_read_byte ( s , buf [ i ]);
1237
1238
1239
1240
1241
1242
1243
}
else if ( n == 0 || errno != EAGAIN )
{
/* XXX : Connection closed . Should probably wait for annother
connection before continuing . */
return sig ;
}
1244
}
1245
1246
return sig ;
}
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
/* 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 );
}
1263
1264
static void gdb_accept ( void * opaque )
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
{
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 ) {
1278
1279
1280
break ;
}
}
1281
1282
1283
/* set short latency */
val = 1 ;
1284
setsockopt ( fd , IPPROTO_TCP , TCP_NODELAY , ( char * ) & val , sizeof ( val ));
ths
authored
18 years ago
1285
1286
1287
s = & gdbserver_state ;
memset ( s , 0 , sizeof ( GDBState ));
1288
s -> env = first_cpu ; /* XXX: allow to change CPU */
1289
1290
s -> fd = fd ;
1291
1292
gdb_syscall_state = s ;
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
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 ;
1309
setsockopt ( fd , SOL_SOCKET , SO_REUSEADDR , ( char * ) & val , sizeof ( val ));
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
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 */
1333
gdb_accept ( NULL );
1334
1335
return 0 ;
}
1336
# else
ths
authored
18 years ago
1337
static int gdb_chr_can_receive ( void * opaque )
1338
1339
1340
1341
{
return 1 ;
}
ths
authored
18 years ago
1342
static void gdb_chr_receive ( void * opaque , const uint8_t * buf , int size )
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
{
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 );
1357
gdb_syscall_state = opaque ;
1358
1359
1360
1361
1362
1363
break ;
default :
break ;
}
}
1364
int gdbserver_start ( const char * port )
1365
1366
{
GDBState * s ;
1367
1368
1369
1370
1371
1372
1373
char gdbstub_port_name [ 128 ];
int port_num ;
char * p ;
CharDriverState * chr ;
if ( ! port || !* port )
return - 1 ;
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
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 );
1384
1385
1386
1387
1388
1389
1390
1391
1392
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
1393
qemu_chr_add_handlers ( chr , gdb_chr_can_receive , gdb_chr_receive ,
1394
1395
gdb_chr_event , s );
qemu_add_vm_stop_handler ( gdb_vm_stopped , s );
1396
1397
return 0 ;
}
1398
# endif