espressif/binutils-gdb
1
0
Fork 0
mirror of https://github.com/espressif/binutils-gdb.git synced 2025-08-06 06:45:56 +08:00
Code Issues Packages Projects Releases Wiki Activity

import gdb-1999-09-08 snapshot

Browse Source
This commit is contained in:
Stan Shebs
1999-09-09 00:02:17 +00:00
parent 325188ecac
commit d4f3574e77
201 changed files with 8614 additions and 4843 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
gdb/i386-stub.c
View File

@ -43,7 +43,6 @@
* It should use the same privilege level it runs at. It should
* install it as an interrupt gate so that interrupts are masked
* while the handler runs.
* Also, need to assign exceptionHook and oldExceptionHook.
*
* Because gdb will sometimes write to the stack area to execute function
* calls, this program cannot rely on using the supervisor stack so it
@ -97,14 +96,10 @@
*
* external low-level support routines
*/
typedef void (*ExceptionHook)(int); /* pointer to function with int parm */
typedef void (*Function)(); /* pointer to a function */
extern void putDebugChar(); /* write a single character */
extern int getDebugChar(); /* read and return a single char */
extern Function exceptionHandler(); /* assign an exception handler */
extern ExceptionHook exceptionHook; /* hook variable for errors/exceptions */
extern void exceptionHandler(); /* assign an exception handler */
/************************************************************************/
/* BUFMAX defines the maximum number of characters in inbound/outbound buffers*/
@ -138,14 +133,6 @@ int registers[NUMREGS];
int remcomStack[STACKSIZE/sizeof(int)];
static int* stackPtr = &remcomStack[STACKSIZE/sizeof(int) - 1];
/*
* In many cases, the system will want to continue exception processing
* when a continue command is given.
* oldExceptionHook is a function to invoke in this case.
*/
static ExceptionHook oldExceptionHook;
/*************************** ASSEMBLY CODE MACROS *************************/
/* */
@ -456,12 +443,15 @@ char ch;
return (-1);
}
static char remcomInBuffer[BUFMAX];
static char remcomOutBuffer[BUFMAX];
/* scan for the sequence $<data>#<checksum> */
unsigned char *
getpacket (buffer)
unsigned char *buffer;
getpacket ()
{
unsigned char *buffer = &remcomInBuffer[0];
unsigned char checksum;
unsigned char xmitcsum;
int count;
@ -557,11 +547,6 @@ void putpacket(buffer)
}
char remcomInBuffer[BUFMAX];
char remcomOutBuffer[BUFMAX];
static short error;
void debug_error(format, parm)
char * format;
char * parm;
@ -739,9 +724,8 @@ void handle_exception(int exceptionVector)
stepping = 0;
while (1==1) {
error = 0;
remcomOutBuffer[0] = 0;
ptr = getpacket(remcomInBuffer);
ptr = getpacket();
switch (*ptr++) {
case '?' : remcomOutBuffer[0] = 'S';
@ -839,25 +823,7 @@ void handle_exception(int exceptionVector)
/* set the trace bit if we're stepping */
if (stepping) registers[ PS ] |= 0x100;
/*
* If we found a match for the PC AND we are not returning
* as a result of a breakpoint (33),
* trace exception (9), nmi (31), jmp to
* the old exception handler as if this code never ran.
*/
#if 0
/* Don't really think we need this, except maybe for protection
exceptions. */
/*
* invoke the previous handler.
*/
if (oldExceptionHook)
(*oldExceptionHook) (frame->exceptionVector);
newPC = registers[ PC ]; /* pc may have changed */
#endif /* 0 */
_returnFromException(); /* this is a jump */
break;
/* kill the program */
@ -900,12 +866,6 @@ int exception;
exceptionHandler (14, _catchException14);
exceptionHandler (16, _catchException16);
if (exceptionHook != remcomHandler)
{
oldExceptionHook = exceptionHook;
exceptionHook = remcomHandler;
}
initialized = 1;
}