static void
create_ppc_elf_stack_frame(device *me,
unsigned_word bottom_of_stack,
char **argv,
char **envp)
{
/* fixme - this is over aligned */
/* information block */
const unsigned sizeof_envp_block = sizeof_argument_strings(envp);
const unsigned_word start_envp_block = bottom_of_stack - sizeof_envp_block;
const unsigned sizeof_argv_block = sizeof_argument_strings(argv);
const unsigned_word start_argv_block = start_envp_block - sizeof_argv_block;
/* auxiliary vector - contains only one entry */
const unsigned sizeof_aux_entry = 2*sizeof(unsigned_word); /* magic */
const unsigned_word start_aux = start_argv_block - ALIGN_8(sizeof_aux_entry);
/* environment points (including null sentinal) */
const unsigned sizeof_envp = sizeof_arguments(envp);
const unsigned_word start_envp = start_aux - sizeof_envp;
/* argument pointers (including null sentinal) */
const int argc = number_of_arguments(argv);
const unsigned sizeof_argv = sizeof_arguments(argv);
const unsigned_word start_argv = start_envp - sizeof_argv;
/* link register save address - alligned to a 16byte boundary */
const unsigned_word top_of_stack = ((start_argv
- 2 * sizeof(unsigned_word))
& ~0xf);
/* install arguments on stack */
write_stack_arguments(me, envp,
start_envp_block, bottom_of_stack,
start_envp, start_aux);
write_stack_arguments(me, argv,
start_argv_block, start_envp_block,
start_argv, start_envp);
/* set up the registers */
psim_write_register(device_system(me), -1,
&top_of_stack, "sp", cooked_transfer);
psim_write_register(device_system(me), -1,
&argc, "r3", cooked_transfer);
psim_write_register(device_system(me), -1,
&start_argv, "r4", cooked_transfer);
psim_write_register(device_system(me), -1,
&start_envp, "r5", cooked_transfer);
psim_write_register(device_system(me), -1,
&start_aux, "r6", cooked_transfer);
}
SIM_RC
sim_create_inferior (SIM_DESC sd,
struct bfd *abfd,
char **argv,
char **envp)
{
unsigned_word entry_point;
TRACE(trace_gdb, ("sim_create_inferior(start_address=0x%x, ...)\n",
entry_point));
if (simulator == NULL)
error ("No program loaded");
if (abfd != NULL)
entry_point = bfd_get_start_address (abfd);
else
entry_point = 0xfff00000; /* ??? */
psim_init(simulator);
psim_stack(simulator, argv, envp);
ASSERT (psim_write_register(simulator, -1 /* all start at same PC */,
&entry_point, "pc", cooked_transfer) > 0);
return SIM_RC_OK;
}
