espressif/binutils-gdb
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import gdb-1999-08-30 snapshot

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This commit is contained in:
Jason Molenda
1999-08-31 01:14:27 +00:00
parent fd485a97b1
commit 104c1213b4
132 changed files with 8907 additions and 3077 deletions
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127
gdb/i386-stub.c
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@ -456,65 +456,82 @@ char ch;
return (-1);
}
/* scan for the sequence $<data>#<checksum> */
void getpacket(buffer)
char * buffer;
unsigned char *
getpacket (buffer)
unsigned char *buffer;
{
unsigned char checksum;
unsigned char xmitcsum;
int i;
int count;
int count;
char ch;
do {
/* wait around for the start character, ignore all other characters */
while ((ch = (getDebugChar() & 0x7f)) != '$');
checksum = 0;
xmitcsum = -1;
while (1)
{
/* wait around for the start character, ignore all other characters */
while ((ch = getDebugChar ()) != '$')
;
count = 0;
retry:
checksum = 0;
xmitcsum = -1;
count = 0;
/* now, read until a # or end of buffer is found */
while (count < BUFMAX) {
ch = getDebugChar() & 0x7f;
if (ch == '#') break;
checksum = checksum + ch;
buffer[count] = ch;
count = count + 1;
}
buffer[count] = 0;
/* now, read until a # or end of buffer is found */
while (count < BUFMAX)
{
ch = getDebugChar ();
if (ch == '$')
goto retry;
if (ch == '#')
break;
checksum = checksum + ch;
buffer[count] = ch;
count = count + 1;
}
buffer[count] = 0;
if (ch == '#') {
xmitcsum = hex(getDebugChar() & 0x7f) << 4;
xmitcsum += hex(getDebugChar() & 0x7f);
if ((remote_debug ) && (checksum != xmitcsum)) {
fprintf (stderr ,"bad checksum. My count = 0x%x, sent=0x%x. buf=%s\n",
checksum,xmitcsum,buffer);
}
if (ch == '#')
{
ch = getDebugChar ();
xmitcsum = hex (ch) << 4;
ch = getDebugChar ();
xmitcsum += hex (ch);
if (checksum != xmitcsum) putDebugChar('-'); /* failed checksum */
else {
putDebugChar('+'); /* successful transfer */
/* if a sequence char is present, reply the sequence ID */
if (buffer[2] == ':') {
putDebugChar( buffer[0] );
putDebugChar( buffer[1] );
/* remove sequence chars from buffer */
count = strlen(buffer);
for (i=3; i <= count; i++) buffer[i-3] = buffer[i];
}
}
if (checksum != xmitcsum)
{
if (remote_debug)
{
fprintf (stderr,
"bad checksum. My count = 0x%x, sent=0x%x. buf=%s\n",
checksum, xmitcsum, buffer);
}
putDebugChar ('-'); /* failed checksum */
}
else
{
putDebugChar ('+'); /* successful transfer */
/* if a sequence char is present, reply the sequence ID */
if (buffer[2] == ':')
{
putDebugChar (buffer[0]);
putDebugChar (buffer[1]);
return &buffer[3];
}
return &buffer[0];
}
}
}
} while (checksum != xmitcsum);
}
/* send the packet in buffer. */
void putpacket(buffer)
char * buffer;
unsigned char *buffer;
{
unsigned char checksum;
int count;
@ -536,7 +553,7 @@ char * buffer;
putDebugChar(hexchars[checksum >> 4]);
putDebugChar(hexchars[checksum % 16]);
} while ((getDebugChar() & 0x7f) != '+');
} while (getDebugChar() != '+');
}
@ -698,7 +715,7 @@ int hexToInt(char **ptr, int *intValue)
*/
void handle_exception(int exceptionVector)
{
int sigval;
int sigval, stepping;
int addr, length;
char * ptr;
int newPC;
@ -719,11 +736,14 @@ void handle_exception(int exceptionVector)
putpacket(remcomOutBuffer);
stepping = 0;
while (1==1) {
error = 0;
remcomOutBuffer[0] = 0;
getpacket(remcomInBuffer);
switch (remcomInBuffer[0]) {
ptr = getpacket(remcomInBuffer);
switch (*ptr++) {
case '?' : remcomOutBuffer[0] = 'S';
remcomOutBuffer[1] = hexchars[sigval >> 4];
remcomOutBuffer[2] = hexchars[sigval % 16];
@ -735,14 +755,13 @@ void handle_exception(int exceptionVector)
mem2hex((char*) registers, remcomOutBuffer, NUMREGBYTES, 0);
break;
case 'G' : /* set the value of the CPU registers - return OK */
hex2mem(&remcomInBuffer[1], (char*) registers, NUMREGBYTES, 0);
hex2mem(ptr, (char*) registers, NUMREGBYTES, 0);
strcpy(remcomOutBuffer,"OK");
break;
case 'P' : /* set the value of a single CPU register - return OK */
{
int regno;
ptr = &remcomInBuffer[1];
if (hexToInt (&ptr, &regno) && *ptr++ == '=')
if (regno >= 0 && regno < NUMREGS)
{
@ -758,7 +777,6 @@ void handle_exception(int exceptionVector)
/* mAA..AA,LLLL Read LLLL bytes at address AA..AA */
case 'm' :
/* TRY TO READ %x,%x. IF SUCCEED, SET PTR = 0 */
ptr = &remcomInBuffer[1];
if (hexToInt(&ptr,&addr))
if (*(ptr++) == ',')
if (hexToInt(&ptr,&length))
@ -775,14 +793,12 @@ void handle_exception(int exceptionVector)
if (ptr)
{
strcpy(remcomOutBuffer,"E01");
debug_error("malformed read memory command: %s",remcomInBuffer);
}
break;
/* MAA..AA,LLLL: Write LLLL bytes at address AA.AA return OK */
case 'M' :
/* TRY TO READ '%x,%x:'. IF SUCCEED, SET PTR = 0 */
ptr = &remcomInBuffer[1];
if (hexToInt(&ptr,&addr))
if (*(ptr++) == ',')
if (hexToInt(&ptr,&length))
@ -803,16 +819,15 @@ void handle_exception(int exceptionVector)
if (ptr)
{
strcpy(remcomOutBuffer,"E02");
debug_error("malformed write memory command: %s",remcomInBuffer);
}
break;
/* cAA..AA Continue at address AA..AA(optional) */
/* sAA..AA Step one instruction from AA..AA(optional) */
case 'c' :
case 's' :
stepping = 1;
case 'c' :
/* try to read optional parameter, pc unchanged if no parm */
ptr = &remcomInBuffer[1];
if (hexToInt(&ptr,&addr))
registers[ PC ] = addr;
@ -822,7 +837,7 @@ void handle_exception(int exceptionVector)
registers[ PS ] &= 0xfffffeff;
/* set the trace bit if we're stepping */
if (remcomInBuffer[0] == 's') registers[ PS ] |= 0x100;
if (stepping) registers[ PS ] |= 0x100;
/*
* If we found a match for the PC AND we are not returning