要移植的代码 重难点
#if !defined(CONFIG_NIOS)
__asm__
(
"mov r1, #193\n"
"mov ip, #0\n"
"mcr p15, 0, ip, c13, c0, 0\n" /*zero PID*/
"mcr p15, 0, ip, c7, c7, 0\n" /*invalidate I,D caches*/
"mcr p15, 0, ip, c7, c10, 4\n" /*drain write buffer*/
"mcr p15, 0, ip, c8, c7, 0\n" /*invalidate I,D TLBs*/
"mrc p15, 0, ip, c1, c0, 0\n" /*get control register*/
"bic ip, ip, #0x0001\n" /*disable MMU*/
"mov pc, %0\n"
"nop\n"
:
:"r"(addr)
);
rc = ((ulong (*)(int, char *[]))addr) (--argc, &argv[1]);
#else
/*
* Nios function pointers are address >> 1
*/
rc = ((ulong (*)(int, char *[]))(addr>>1)) (--argc, &argv[1]);
#endif
if (rc != 0) rcode = 1;
printf ("## Application terminated, rc = 0x%lX\n", rc);
return rcode;
} |