factor/vm/os-linux-arm.cpp

#include "master.hpp"

namespace factor {

void flush_icache(cell start, cell len) {
  int result;

  /* XXX: why doesn't this work on Nokia n800? It should behave
          identically to the below assembly. */
  /* result = syscall(__ARM_NR_cacheflush,start,start + len,0); */

  /* Assembly swiped from
     http://lists.arm.linux.org.uk/pipermail/linux-arm/2002-July/003931.html */
  __asm__ __volatile__("mov     r0, %1\n"
                       "sub     r1, %2, #1\n"
                       "mov     r2, #0\n"
                       "swi     " __sys1(__ARM_NR_cacheflush) "\n"
                                                              "mov     %0, r0\n"
                       : "=r"(result)
                       : "r"(start), "r"(start + len)
                       : "r0", "r1", "r2");

  if (result < 0)
    critical_error("flush_icache() failed", result);
}

}