src/arch/ppc64/boot.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <program_loading.h>
   4
   5 #if ENV_PAYLOAD_LOADER
   6
   7 /*
   8  * Payload's entry point is an offset to the real entry point, not to OPD
   9  * (Official Procedure Descriptor) for entry point.
  10  */
  11 void arch_prog_run(struct prog *prog)
  12 {
  13         asm volatile(
  14             "mtctr %1\n"
  15             "mr 3, %0\n"
  16             "bctr\n"
  17             :: "r"(prog_entry_arg(prog)), "r"(prog_entry(prog)) : "memory");
  18 }
  19
  20 #else
  21
  22 void arch_prog_run(struct prog *prog)
  23 {
  24         void (*doit)(void *) = prog_entry(prog);
  25
  26         doit(prog_entry_arg(prog));
  27 }
  28
  29 #endif