/***********************************************************************
* break_add_break_from_lvalue
*
* Add a breakpoint.
*/
BOOL break_add_break_from_lvalue(const struct dbg_lvalue* lvalue, BOOL swbp)
{
ADDRESS64 addr;
types_extract_as_address(lvalue, &addr);
if (!break_add_break(&addr, TRUE, swbp))
{
if (!DBG_IVAR(CanDeferOnBPByAddr))
{
dbg_printf("Invalid address, can't set breakpoint\n"
"You can turn on deferring bp by address by setting $CanDeferOnBPByAddr to 1\n");
return FALSE;
}
dbg_printf("Unable to add breakpoint, will check again any time a new DLL is loaded\n");
dbg_curr_process->delayed_bp =
dbg_heap_realloc(dbg_curr_process->delayed_bp,
sizeof(struct dbg_delayed_bp) * ++dbg_curr_process->num_delayed_bp);
dbg_curr_process->delayed_bp[dbg_curr_process->num_delayed_bp - 1].is_symbol = FALSE;
dbg_curr_process->delayed_bp[dbg_curr_process->num_delayed_bp - 1].software_bp = swbp;
dbg_curr_process->delayed_bp[dbg_curr_process->num_delayed_bp - 1].u.addr = addr;
return TRUE;
}
return FALSE;
}
/***********************************************************************
* break_add_break_from_id
*
* Add a breakpoint from a function name (and eventually a line #)
*/
void break_add_break_from_id(const char *name, int lineno, BOOL swbp)
{
struct dbg_lvalue lvalue;
int i;
switch (symbol_get_lvalue(name, lineno, &lvalue, TRUE))
{
case sglv_found:
break_add_break(&lvalue.addr, TRUE, swbp);
return;
case sglv_unknown:
break;
case sglv_aborted: /* user aborted symbol lookup */
return;
}
dbg_printf("Unable to add breakpoint, will check again when a new DLL is loaded\n");
for (i = 0; i < dbg_curr_process->num_delayed_bp; i++)
{
if (dbg_curr_process->delayed_bp[i].is_symbol &&
!strcmp(name, dbg_curr_process->delayed_bp[i].u.symbol.name) &&
lineno == dbg_curr_process->delayed_bp[i].u.symbol.lineno)
return;
}
dbg_curr_process->delayed_bp = dbg_heap_realloc(dbg_curr_process->delayed_bp,
sizeof(struct dbg_delayed_bp) * ++dbg_curr_process->num_delayed_bp);
dbg_curr_process->delayed_bp[dbg_curr_process->num_delayed_bp - 1].is_symbol = TRUE;
dbg_curr_process->delayed_bp[dbg_curr_process->num_delayed_bp - 1].software_bp = swbp;
dbg_curr_process->delayed_bp[dbg_curr_process->num_delayed_bp - 1].u.symbol.name = strcpy(HeapAlloc(GetProcessHeap(), 0, strlen(name) + 1), name);
dbg_curr_process->delayed_bp[dbg_curr_process->num_delayed_bp - 1].u.symbol.lineno = lineno;
}
/******************************************************************
* stack_fetch_frames
*
* Do a backtrace on the current thread
*/
unsigned stack_fetch_frames(const CONTEXT* _ctx)
{
STACKFRAME64 sf;
unsigned nf = 0;
/* as native stackwalk can modify the context passed to it, simply copy
* it to avoid any damage
*/
CONTEXT ctx = *_ctx, prevctx = ctx;
HeapFree(GetProcessHeap(), 0, dbg_curr_thread->frames);
dbg_curr_thread->frames = NULL;
memset(&sf, 0, sizeof(sf));
be_cpu->get_addr(dbg_curr_thread->handle, &ctx, be_cpu_addr_frame, &sf.AddrFrame);
be_cpu->get_addr(dbg_curr_thread->handle, &ctx, be_cpu_addr_pc, &sf.AddrPC);
be_cpu->get_addr(dbg_curr_thread->handle, &ctx, be_cpu_addr_stack, &sf.AddrStack);
/* don't confuse StackWalk by passing in inconsistent addresses */
if ((sf.AddrPC.Mode == AddrModeFlat) && (sf.AddrFrame.Mode != AddrModeFlat))
{
sf.AddrFrame.Offset = (ULONG_PTR)memory_to_linear_addr(&sf.AddrFrame);
sf.AddrFrame.Mode = AddrModeFlat;
}
while (StackWalk64(be_cpu->machine, dbg_curr_process->handle,
dbg_curr_thread->handle, &sf, &ctx, stack_read_mem,
SymFunctionTableAccess64, SymGetModuleBase64, NULL))
{
dbg_curr_thread->frames = dbg_heap_realloc(dbg_curr_thread->frames,
(nf + 1) * sizeof(dbg_curr_thread->frames[0]));
dbg_curr_thread->frames[nf].addr_pc = sf.AddrPC;
dbg_curr_thread->frames[nf].linear_pc = (DWORD_PTR)memory_to_linear_addr(&sf.AddrPC);
dbg_curr_thread->frames[nf].addr_frame = sf.AddrFrame;
dbg_curr_thread->frames[nf].linear_frame = (DWORD_PTR)memory_to_linear_addr(&sf.AddrFrame);
dbg_curr_thread->frames[nf].addr_stack = sf.AddrStack;
dbg_curr_thread->frames[nf].linear_stack = (DWORD_PTR)memory_to_linear_addr(&sf.AddrStack);
dbg_curr_thread->frames[nf].context = prevctx;
/* FIXME: can this heuristic be improved: we declare first context always valid, and next ones
* if it has been modified by the call to StackWalk...
*/
dbg_curr_thread->frames[nf].is_ctx_valid =
(nf == 0 ||
(dbg_curr_thread->frames[nf - 1].is_ctx_valid &&
memcmp(&dbg_curr_thread->frames[nf - 1].context, &ctx, sizeof(ctx))));
prevctx = ctx;
nf++;
/* we've probably gotten ourselves into an infinite loop so bail */
if (nf > 200) break;
}
dbg_curr_thread->curr_frame = -1;
dbg_curr_thread->num_frames = nf;
stack_set_frame_internal(0);
return nf;
}
