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MFi386: use %rip - 1 for the symbol search address (for noreturn funcs)

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This commit is contained in:
peter 2005-01-21 05:54:05 +00:00
parent 353c32f9f8
commit 5558cc24b7
1 changed files with 8 additions and 2 deletions
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10
sys/amd64/amd64/db_trace.c
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@ -302,10 +302,16 @@ db_nextframe(struct amd64_frame **fp, db_addr_t *ip, struct thread *td)
rbp = db_get_value((long) &(*fp)->f_frame, 8, FALSE);
/*
* Figure out frame type.
* Figure out frame type. We look at the address just before
* the saved instruction pointer as the saved EIP is after the
* call function, and if the function being called is marked as
* dead (such as panic() at the end of dblfault_handler()), then
* the instruction at the saved EIP will be part of a different
* function (syscall() in this example) rather than the one that
* actually made the call.
*/
frame_type = NORMAL;
sym = db_search_symbol(rip, DB_STGY_ANY, &offset);
sym = db_search_symbol(rip - 1, DB_STGY_ANY, &offset);
db_symbol_values(sym, &name, NULL);
if (name != NULL) {
if (strcmp(name, "calltrap") == 0 ||