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adjust demon to correctly produce, & ctrl to correctly process, breakpoint events which cannot be correlated to a high-level UI-defined breakpoint state. this catches, for example, data breakpoints which are programmatically set by the user program.

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This commit is contained in:
Ryan Fleury
2025-07-16 11:54:02 -07:00
parent 26f9e09483
commit fc8b521b2c
3 changed files with 20 additions and 5 deletions
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src/ctrl/ctrl_core.c
+8
View File
@@ -6334,6 +6334,14 @@ ctrl_thread__run(DMN_CtrlCtx *ctrl_ctx, CTRL_Msg *msg)
}
}
// rjf: programmatic user breakpoints (we do not have state for it,
// but the target program(s) did something breakpoint-like, and we
// want to treat it as if we did)
if(event->address != 0)
{
hit_user_bp = 1;
}
// rjf: evaluate hit stop conditions
if(conditions.node_count != 0) ProfScope("evaluate hit stop conditions")
{
src/demon/win32/demon_core_win32.c
+4 -5
View File
@@ -2383,7 +2383,6 @@ dmn_ctrl_run(Arena *arena, DMN_CtrlCtx *ctx, DMN_RunCtrls *ctrls)
// hit - so if we have data breakpoints set, we need to
// check this thread's debug registers, to determine if this
// is a regular single-step or a data breakpoint hit.
if(first_flagged_trap_task != 0)
{
// rjf: first determine the flagged trap index
U64 flagged_trap_idx = 0;
@@ -2398,10 +2397,10 @@ dmn_ctrl_run(Arena *arena, DMN_CtrlCtx *ctx, DMN_RunCtrls *ctrls)
{
e->kind = DMN_EventKind_Breakpoint;
if(0){}
else if(regs.dr7.u64 & (1ull<<0) && regs.dr6.u64 & (1ull<<0)) { flagged_trap_idx = 0; }
else if(regs.dr7.u64 & (1ull<<2) && regs.dr6.u64 & (1ull<<1)) { flagged_trap_idx = 1; }
else if(regs.dr7.u64 & (1ull<<4) && regs.dr6.u64 & (1ull<<2)) { flagged_trap_idx = 2; }
else if(regs.dr7.u64 & (1ull<<8) && regs.dr6.u64 & (1ull<<3)) { flagged_trap_idx = 3; }
else if(regs.dr7.u64 & (1ull<<0) && regs.dr6.u64 & (1ull<<0)) { flagged_trap_idx = 0; e->address = regs.dr0.u64; }
else if(regs.dr7.u64 & (1ull<<2) && regs.dr6.u64 & (1ull<<1)) { flagged_trap_idx = 1; e->address = regs.dr1.u64; }
else if(regs.dr7.u64 & (1ull<<4) && regs.dr6.u64 & (1ull<<2)) { flagged_trap_idx = 2; e->address = regs.dr2.u64; }
else if(regs.dr7.u64 & (1ull<<8) && regs.dr6.u64 & (1ull<<3)) { flagged_trap_idx = 3; e->address = regs.dr3.u64; }
}
}break;
}
src/raddbg/raddbg_core.c
+8
View File
@@ -10405,6 +10405,14 @@ rd_stop_explanation_fstrs_from_ctrl_event(Arena *arena, CTRL_Event *event)
dr_fstrs_push_new(arena, &fstrs, &params, str8_lit(" "));
dr_fstrs_concat_in_place(&fstrs, &thread_fstrs);
dr_fstrs_push_new(arena, &fstrs, &params, str8_lit(" hit a breakpoint"));
if(event->vaddr_rng.min != 0)
{
dr_fstrs_push_new(arena, &fstrs, &params, str8_lit(" (Address: "));
dr_fstrs_push_new(arena, &fstrs, &params, push_str8f(arena, "0x%I64x", event->vaddr_rng.min),
.font = rd_font_from_slot(RD_FontSlot_Code),
.raster_flags = rd_raster_flags_from_slot(RD_FontSlot_Code));
dr_fstrs_push_new(arena, &fstrs, &params, str8_lit(")"));
}
}
}break;