arch/alpha/lib/dbg_stackcheck.S

   1 /*
   2  * arch/alpha/lib/stackcheck.S
   3  * Contributed by Richard Henderson (rth@tamu.edu)
   4  *
   5  * Verify that we have not overflowed the stack.  Oops if we have.
   6  */
   7
   8 #include <asm/asm_offsets.h>
   9
  10         .text
  11         .set noat
  12
  13         .align 3
  14         .globl _mcount
  15         .ent _mcount
  16 _mcount:
  17         .frame $30, 0, $28, 0
  18         .prologue 0
  19
  20         lda     $0, TASK_SIZE($8)
  21         cmpult  $30, $0, $0
  22         bne     $0, 1f
  23         ret     ($28)
  24 1:      stq     $31, -8($31)    # oops me, damn it.
  25         br      1b
  26
  27         .end _mcount