void
generic_push_dummy_frame (void)
{
struct dummy_frame *dummy_frame;
CORE_ADDR fp = (get_current_frame ())->frame;
/* check to see if there are stale dummy frames,
perhaps left over from when a longjump took us out of a
function that was called by the debugger */
dummy_frame = dummy_frame_stack;
while (dummy_frame)
if (INNER_THAN (dummy_frame->fp, fp)) /* stale -- destroy! */
{
dummy_frame_stack = dummy_frame->next;
xfree (dummy_frame->registers);
xfree (dummy_frame);
dummy_frame = dummy_frame_stack;
}
else
dummy_frame = dummy_frame->next;
dummy_frame = xmalloc (sizeof (struct dummy_frame));
dummy_frame->registers = xmalloc (REGISTER_BYTES);
dummy_frame->pc = read_pc ();
dummy_frame->sp = read_sp ();
dummy_frame->top = dummy_frame->sp;
dummy_frame->fp = fp;
read_register_bytes (0, dummy_frame->registers, REGISTER_BYTES);
dummy_frame->next = dummy_frame_stack;
dummy_frame_stack = dummy_frame;
}
void
m68k_push_dummy_frame ()
{
register CORE_ADDR sp = read_register (SP_REGNUM);
register int regnum;
char raw_buffer[12];
sp = push_word (sp, read_register (PC_REGNUM));
sp = push_word (sp, read_register (FP_REGNUM));
write_register (FP_REGNUM, sp);
#if defined (HAVE_68881)
for (regnum = FP0_REGNUM + 7; regnum >= FP0_REGNUM; regnum--)
{
read_register_bytes (REGISTER_BYTE (regnum), raw_buffer, 12);
sp = push_bytes (sp, raw_buffer, 12);
}
#endif
for (regnum = FP_REGNUM - 1; regnum >= 0; regnum--)
{
sp = push_word (sp, read_register (regnum));
}
sp = push_word (sp, read_register (PS_REGNUM));
write_register (SP_REGNUM, sp);
}
