d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix last commit so that it actually works:

Browse Source 
- Get test for valid trace request contents right.
- You don't use 'stq' to move a value from one register to another,
  use 'mov' to read sp.  Also, can't use nice names for registers
  in in-line asm in gcc.
- pc is not a publically accessible register, instead, create a label
  in the asm code and use 'lda' to load the address of that label into
  the pc field of the trace request.
- Use correction function name for db_print_backtrace().
This commit is contained in:
jhb 2002-09-19 20:40:26 +00:00
parent 8fb250553b
commit f239fd4894
1 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
sys/alpha/alpha/db_trace.c
View File

@ -268,7 +268,7 @@ db_stack_trace_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count, char *m
struct trace_request *tr;
tr = (struct trace_request *)addr;
if (tr->ksp >= KERNBASE && tr->pc >= KERNBASE) {
if (tr->ksp < KERNBASE || tr->pc < KERNBASE) {
db_printf("alpha trace requires known PC =eject=\n");
return;
}
@ -391,15 +391,16 @@ db_stack_trace_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count, char *m
}
void
db_stack_trace_cmd(void)
db_print_backtrace(void)
{
struct trace_request tr;
__asm __volatile(
" stq sp,%0 \n"
" stq pc,%1 \n"
" mov $30,%0 \n"
" lda %1,1f \n"
"1:\n"
: "=r" (tr.ksp), "=r" (tr.pc));
db_stack_trace_cmd(&tr, 1, -1, NULL);
db_stack_trace_cmd((db_addr_t)&tr, 1, -1, NULL);
}
int