Removed superfluous htons()/htonl() functions (we already have the

standard byte order functions in the kernel).
Small cleanup.


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@7705 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2004-05-31 22:49:06 +00:00
parent 78f42e3f33
commit 38e937ca8e

View File

@ -29,35 +29,20 @@ static char safe_mem[512];
/*
* utility functions
*/
static
int
htons(short value)
{
return ((value>>8)&0xff) | ((value&0xff)<<8);
}
static
int
htonl(int value)
{
return htons((value>>16)&0xffff) | (htons(value&0xffff)<<16);
}
static
int
static int
parse_nibble(int input)
{
int nibble= 0xff;
int nibble = 0xff;
if((input>= '0') && (input<= '9')) {
nibble= input-'0';
}
if((input>= 'A') && (input<= 'F')) {
nibble= 0x0a+(input-'A');
}
if((input>= 'a') && (input<= 'f')) {
nibble= 0x0a+(input-'a');
}
if (input >= '0' && input <= '9')
nibble = input - '0';
if (input >= 'A' && input <= 'F')
nibble = 0x0a + input - 'A';
if (input >= 'a' && input <= 'f')
nibble = 0x0a + input - 'a';
return nibble;
}
@ -68,29 +53,29 @@ parse_nibble(int input)
* GDB protocol ACK & NAK & Reply
*
*/
static
void
static void
gdb_ack(void)
{
dbg_putch('+');
}
static
void
static void
gdb_nak(void)
{
dbg_putch('-');
}
static
void
static void
gdb_resend_reply(void)
{
dbg_puts(reply);
}
static
void
static void
gdb_reply(char const *fmt, ...)
{
int i;
@ -99,68 +84,68 @@ gdb_reply(char const *fmt, ...)
va_list args;
va_start(args, fmt);
reply[0]= '$';
vsprintf(reply+1, fmt, args);
reply[0] = '$';
vsprintf(reply + 1, fmt, args);
va_end(args);
len= strlen(reply);
sum= 0;
for(i= 1; i< len; i++) {
sum+= reply[i];
len = strlen(reply);
sum = 0;
for (i = 1; i < len; i++) {
sum += reply[i];
}
sum%= 256;
sum %= 256;
sprintf(reply+len, "#%02x", sum);
sprintf(reply + len, "#%02x", sum);
gdb_resend_reply();
}
static
void
static void
gdb_regreply(int const *regs, int numregs)
{
int i;
int len;
int sum;
reply[0]= '$';
for(i= 0; i< numregs; i++) {
sprintf(reply+1+8*i, "%08x", htonl(regs[i]));
reply[0] = '$';
for (i = 0; i < numregs; i++) {
sprintf(reply+1+8*i, "%08lx", B_HOST_TO_BENDIAN_INT32(regs[i]));
}
len= strlen(reply);
sum= 0;
for(i= 1; i< len; i++) {
sum+= reply[i];
len = strlen(reply);
sum = 0;
for (i = 1; i < len; i++) {
sum += reply[i];
}
sum%= 256;
sum %= 256;
sprintf(reply+len, "#%02x", sum);
sprintf(reply + len, "#%02x", sum);
gdb_resend_reply();
}
static
void
static void
gdb_memreply(char const *bytes, int numbytes)
{
int i;
int len;
int sum;
reply[0]= '$';
for(i= 0; i< numbytes; i++) {
sprintf(reply+1+2*i, "%02x", (unsigned char)bytes[i]);
reply[0] = '$';
for (i = 0; i < numbytes; i++) {
sprintf(reply+1+2*i, "%02x", (uint8)bytes[i]);
}
len= strlen(reply);
sum= 0;
for(i= 1; i< len; i++) {
sum+= reply[i];
len = strlen(reply);
sum = 0;
for (i = 1; i < len; i++) {
sum += reply[i];
}
sum%= 256;
sum %= 256;
sprintf(reply+len, "#%02x", sum);
sprintf(reply + len, "#%02x", sum);
gdb_resend_reply();
}
@ -170,57 +155,51 @@ gdb_memreply(char const *bytes, int numbytes)
/*
* checksum verification
*/
static
int
static int
gdb_verify_checksum(void)
{
int i;
int len;
int sum;
len= strlen(cmd);
sum= 0;
for(i= 0; i< len; i++) {
sum+= cmd[i];
len = strlen(cmd);
sum = 0;
for (i = 0; i < len; i++) {
sum += cmd[i];
}
sum%= 256;
sum %= 256;
return (sum==checksum)?1:0;
return (sum == checksum) ? 1 : 0;
}
/*
* command parsing an dispatching
*/
static
int
static int
gdb_parse_command(void)
{
// int retval;
if(!gdb_verify_checksum()) {
if (!gdb_verify_checksum()) {
gdb_nak();
return INIT;
} else {
} else
gdb_ack();
}
switch(cmd[0]) {
switch (cmd[0]) {
case 'H':
{
/*
* Command H (actually Hct) is used to select
* the current thread (-1 meaning all threads)
* We just fake we recognize the the command
* and send an 'OK' response.
*/
gdb_reply("OK");
} break;
/*
* Command H (actually Hct) is used to select
* the current thread (-1 meaning all threads)
* We just fake we recognize the the command
* and send an 'OK' response.
*/
gdb_reply("OK");
break;
case 'q':
{
// extern unsigned _start;
extern unsigned __data_start;
extern unsigned __bss_start;
@ -242,28 +221,24 @@ gdb_parse_command(void)
* pre-links at 0x80000000. To keep gdb
* gdb happy we just substract that amount.
*/
if(strcmp(cmd+1, "Offsets")== 0) {
gdb_reply(
"Text=%x;Data=%x;Bss=%x",
0,
if (strcmp(cmd+1, "Offsets") == 0) {
gdb_reply("Text=%x;Data=%x;Bss=%x", 0,
((unsigned)(&__data_start))-0x80000000,
((unsigned)(&__bss_start))-0x80000000
);
} else {
((unsigned)(&__bss_start))-0x80000000);
} else
gdb_reply("ENS");
}
} break;
}
break;
case '?':
{
/*
* command '?' is used for retrieving the signal
* that stopped the program. Fully implemeting
* this command requires help from the debugger,
* by now we just fake a SIGKILL
*/
gdb_reply("S09"); /* SIGKILL = 9 */
} break;
/*
* command '?' is used for retrieving the signal
* that stopped the program. Fully implemeting
* this command requires help from the debugger,
* by now we just fake a SIGKILL
*/
gdb_reply("S09"); /* SIGKILL = 9 */
break;
case 'g':
{
@ -286,9 +261,10 @@ gdb_parse_command(void)
* reason (unknown to me) gdb wants the register
* dump in *big endian* format.
*/
cpu= smp_get_current_cpu();
cpu = smp_get_current_cpu();
gdb_regreply(dbg_register_file[cpu], 14);
} break;
}
break;
case 'm':
{
@ -301,26 +277,25 @@ gdb_parse_command(void)
* where AAA is the address and LLL is the
* number of bytes.
*/
ptr= cmd+1;
address= 0;
len= 0;
while(ptr && *ptr && (*ptr!= ',')) {
address<<= 4;
address+= parse_nibble(*ptr);
ptr+= 1;
ptr = cmd+1;
address = 0;
len = 0;
while (ptr && *ptr && (*ptr != ',')) {
address <<= 4;
address += parse_nibble(*ptr);
ptr += 1;
}
if(*ptr== ',') {
ptr+= 1;
}
while(ptr && *ptr) {
len<<= 4;
len+= parse_nibble(*ptr);
if (*ptr == ',')
ptr+= 1;
while (ptr && *ptr) {
len <<= 4;
len += parse_nibble(*ptr);
ptr += 1;
}
if(len> 128) {
len= 128;
}
if (len> 128)
len = 128;
/*
* We cannot directly access the requested memory
@ -328,31 +303,28 @@ gdb_parse_command(void)
* We copy the memory to a safe buffer using
* the bulletproof user_memcpy().
*/
if(user_memcpy(safe_mem, (char*)address, len)< 0) {
if (user_memcpy(safe_mem, (char *)address, len) < 0)
gdb_reply("E02");
} else {
else
gdb_memreply(safe_mem, len);
}
} break;
}
break;
case 'k':
{
/*
* Command 'k' actual semantics is 'kill the damn thing'.
* However gdb sends that command when you disconnect
* from a debug session. I guess that 'kill' for the
* kernel would map to reboot... however that's a
* a very mean thing to do, instead we just quit
* the gdb state machine and fallback to the regular
* kernel debugger command prompt.
*/
return QUIT;
} break;
/*
* Command 'k' actual semantics is 'kill the damn thing'.
* However gdb sends that command when you disconnect
* from a debug session. I guess that 'kill' for the
* kernel would map to reboot... however that's a
* a very mean thing to do, instead we just quit
* the gdb state machine and fallback to the regular
* kernel debugger command prompt.
*/
return QUIT;
default:
{
gdb_reply("E01");
} break;
gdb_reply("E01");
break;
}
return WAITACK;
@ -363,15 +335,16 @@ gdb_parse_command(void)
/*
* GDB protocol state machine
*/
static
int
static int
gdb_init_handler(int input)
{
switch(input) {
switch (input) {
case '$':
memset(cmd, 0, sizeof(cmd));
cmd_ptr= 0;
cmd_ptr = 0;
return CMDREAD;
default:
#if 0
gdb_nak();
@ -387,27 +360,28 @@ gdb_init_handler(int input)
}
}
static
int
static int
gdb_cmdread_handler(int input)
{
switch(input) {
switch (input) {
case '#':
return CKSUM1;
default:
cmd[cmd_ptr]= input;
cmd_ptr+= 1;
cmd[cmd_ptr] = input;
cmd_ptr += 1;
return CMDREAD;
}
}
static
int
static int
gdb_cksum1_handler(int input)
{
int nibble= parse_nibble(input);
int nibble = parse_nibble(input);
if(nibble== 0xff) {
if (nibble == 0xff) {
#if 0
gdb_nak();
return INIT;
@ -421,18 +395,18 @@ gdb_cksum1_handler(int input)
#endif
}
checksum= nibble<< 4;
checksum = nibble << 4;
return CKSUM2;
}
static
int
static int
gdb_cksum2_handler(int input)
{
int nibble= parse_nibble(input);
int nibble = parse_nibble(input);
if(nibble== 0xff) {
if (nibble == 0xff) {
#if 0
gdb_nak();
return INIT;
@ -446,21 +420,22 @@ gdb_cksum2_handler(int input)
#endif
}
checksum+= nibble;
checksum += nibble;
return gdb_parse_command();
}
static
int
static int
gdb_waitack_handler(int input)
{
switch(input) {
switch (input) {
case '+':
return INIT;
case '-':
gdb_resend_reply();
return WAITACK;
default:
/*
* looks like gdb and us are out of synch,
@ -471,8 +446,8 @@ gdb_waitack_handler(int input)
}
}
static
int
static int
gdb_quit_handler(int input)
{
(void)(input);
@ -483,8 +458,8 @@ gdb_quit_handler(int input)
return QUIT;
}
static int (*dispatch_table[GDBSTATES])(int)=
{
static int (*dispatch_table[GDBSTATES])(int) = {
&gdb_init_handler,
&gdb_cmdread_handler,
&gdb_cksum1_handler,
@ -493,35 +468,32 @@ static int (*dispatch_table[GDBSTATES])(int)=
&gdb_quit_handler
};
static
int
static int
gdb_state_dispatch(int curr, int input)
{
if(curr< INIT) {
if (curr < INIT || curr >= GDBSTATES)
return QUIT;
}
if(curr>= GDBSTATES) {
return QUIT;
}
return dispatch_table[curr](input);
}
static
int
static int
gdb_state_machine(void)
{
int state= INIT;
int state = INIT;
int c;
while(state!= QUIT) {
c= arch_dbg_con_read();
state= gdb_state_dispatch(state, c);
while (state != QUIT) {
c = arch_dbg_con_read();
state = gdb_state_dispatch(state, c);
}
return 0;
}
int
cmd_gdb(int argc, char **argv)
{