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Differential D27362 Diff 80450 head/sys/arm64/arm64/db_trace.c

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head/sys/arm64/arm64/db_trace.c

Show First 20 Lines • Show All 59 Lines • ▼ Show 20 Lines
int int
db_md_set_watchpoint(db_expr_t addr, db_expr_t size) db_md_set_watchpoint(db_expr_t addr, db_expr_t size)
{ {
return (dbg_setup_watchpoint(NULL, addr, size, HW_BREAKPOINT_RW)); return (dbg_setup_watchpoint(NULL, addr, size, HW_BREAKPOINT_RW));
} }
static void static void
db_stack_trace_cmd(struct unwind_state *frame) db_stack_trace_cmd(struct thread *td, struct unwind_state *frame)
{ {
c_db_sym_t sym; c_db_sym_t sym;
const char *name; const char *name;
db_expr_t value; db_expr_t value;
db_expr_t offset; db_expr_t offset;
while (1) { while (1) {
uintptr_t pc = frame->pc; uintptr_t pc = frame->pc;
int ret;
ret = unwind_frame(frame); if (!unwind_frame(td, frame))
if (ret < 0)
break; break;
sym = db_search_symbol(pc, DB_STGY_ANY, &offset); sym = db_search_symbol(pc, DB_STGY_ANY, &offset);
if (sym == C_DB_SYM_NULL) { if (sym == C_DB_SYM_NULL) {
value = 0; value = 0;
name = "(null)"; name = "(null)";
} else } else
db_symbol_values(sym, &name, &value); db_symbol_values(sym, &name, &value);
Show All 18 Linesdb_trace_thread(struct thread *thr, int count)
struct pcb *ctx; struct pcb *ctx;
if (thr != curthread) { if (thr != curthread) {
ctx = kdb_thr_ctx(thr); ctx = kdb_thr_ctx(thr);
frame.sp = (uintptr_t)ctx->pcb_sp; frame.sp = (uintptr_t)ctx->pcb_sp;
frame.fp = (uintptr_t)ctx->pcb_x[29]; frame.fp = (uintptr_t)ctx->pcb_x[29];
frame.pc = (uintptr_t)ctx->pcb_x[30]; frame.pc = (uintptr_t)ctx->pcb_x[30];
db_stack_trace_cmd(&frame); db_stack_trace_cmd(thr, &frame);
} else } else
db_trace_self(); db_trace_self();
return (0); return (0);
} }
void void
db_trace_self(void) db_trace_self(void)
{ {
struct unwind_state frame; struct unwind_state frame;
uintptr_t sp; uintptr_t sp;
__asm __volatile("mov %0, sp" : "=&r" (sp)); __asm __volatile("mov %0, sp" : "=&r" (sp));
frame.sp = sp; frame.sp = sp;
frame.fp = (uintptr_t)__builtin_frame_address(0); frame.fp = (uintptr_t)__builtin_frame_address(0);
frame.pc = (uintptr_t)db_trace_self; frame.pc = (uintptr_t)db_trace_self;
db_stack_trace_cmd(&frame); db_stack_trace_cmd(curthread, &frame);
} }