vm/os-linux-arm.cpp

   1 #include "master.hpp"
   2
   3 void flush_icache(CELL start, CELL len)
   4 {
   5         int result;
   6
   7         /* XXX: why doesn't this work on Nokia n800? It should behave
   8         identically to the below assembly. */
   9         /* result = syscall(__ARM_NR_cacheflush,start,start + len,0); */
  10
  11         /* Assembly swiped from
  12         http://lists.arm.linux.org.uk/pipermail/linux-arm/2002-July/003931.html
  13         */
  14         __asm__ __volatile__ (
  15                 "mov     r0, %1\n"
  16                 "sub     r1, %2, #1\n"
  17                 "mov     r2, #0\n"
  18                 "swi     " __sys1(__ARM_NR_cacheflush) "\n"
  19                 "mov     %0, r0\n"
  20                 : "=r" (result)
  21                 : "r" (start), "r" (start + len)
  22                 : "r0","r1","r2");
  23
  24         if(result < 0)
  25                 critical_error("flush_icache() failed",result);
  26 }