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Firmware: allow multiple transient breakpoints

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Change-Id: I7a6e929698ec395eff6e22e2aeb507b3c3146dca
This commit is contained in:
David Banks 2019-10-31 11:49:49 +00:00
parent ceedc701ca
commit 3b90dc82fc
1 changed files with 9 additions and 16 deletions
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25
firmware/AtomBusMon.c
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@ -306,7 +306,7 @@ unsigned int masks[MAXBKPTS];
unsigned int modes[MAXBKPTS];
// The number of different watch/breakpoint modes
#define NUM_MODES 10
#define NUM_MODES 11
// The following watch/breakpoint modes are defined
#define BRKPT_MEM_READ 0
@ -319,6 +319,7 @@ unsigned int modes[MAXBKPTS];
#define WATCH_IO_WRITE 7
#define BRKPT_EXEC 8
#define WATCH_EXEC 9
#define TRANSIENT 10
// Breakpoint Mode Strings, should match the modes above
char *modeStrings[NUM_MODES] = {
@ -331,7 +332,8 @@ char *modeStrings[NUM_MODES] = {
"IO Wr Brkpt",
"IO Wr Watch",
"Ex Brkpt",
"Ex Watch"
"Ex Watch",
"Transient"
};
// For convenience, several masks are defined that group similar types of breakpoint/watch
@ -395,14 +397,10 @@ unsigned int memAddr = 0;
// The address of the next instruction
unsigned int nextAddr = 0;
// The address of the transient breakpoint
unsigned int transientAddr = 0xffff;
// When single stepping, trace (i.e. log) event N instructions
// Setting this to 0 will disable logging
long trace;
/********************************************************
* User Command Processor
********************************************************/
@ -1300,8 +1298,7 @@ void doCmdNext(char *params) {
logTooManyBreakpoints();
return;
}
transientAddr = nextAddr;
setBreakpoint(numbkpts++, nextAddr, 0xffff, 1 << BRKPT_EXEC, TRIGGER_ALWAYS);
setBreakpoint(numbkpts++, nextAddr, 0xffff, (1 << BRKPT_EXEC) | (1 << TRANSIENT), TRIGGER_ALWAYS);
doCmdContinue(params);
}
@ -1372,14 +1369,10 @@ void doCmdContinue(char *params) {
// Show current instruction
logAddr();
// Check if we have hit the transient breakpoint
if (memAddr == transientAddr) {
// Attempt to remove the transient breakpoint
int n = lookupBreakpointN(transientAddr);
if (n >= 0) {
clearBreakpoint(n);
}
transientAddr = 0xFFFF;
// If we have hit the transient breakpoint, clear it
int n = lookupBreakpointN(memAddr);
if ((n >= 0) && (modes[n] & (1 << TRANSIENT))) {
clearBreakpoint(n);
}
}