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|
int global;
static char local;
void hello(int arg)
{
switch (arg) {
case 1:
printf("Inner-module call hello()\n");
break;
case 2:
printf("Inter-module call hello()\n");
break;
#if defined PPC
case 24:
printf("PPC ADDR24 'bla hello' call\n");
break;
case 14:
printf("PPC REL14 'beq cr7, hello' jump\n");
break;
case 15:
printf("PPC ADDR14 'beqa cr7, hello' jump\n");
break;
#elif defined (__sparc__)
case 22:
printf("SPARC WDISP22 'b hello'\n");
break;
case 13:
printf("SPARC 13 'mov hello, %%l4'\n");
break;
#else
#endif
default:
printf("no arg in hello\n");
return;
}
}
#if defined (__arm__)
int rtems_arm(int arg)
{
switch (arg) {
case 24:
printf("R_ARM_JUMP24: arg = 24\n");
break;
}
return 0;
}
int rtems_thumb(int arg)
{
switch (arg) {
case 19:
printf("R_ARM_THM_JUMP19: arg = 19\n");
break;
case 24:
printf("R_ARM_THM_JUMP24: arg = 24\n");
break;
}
return 0;
}
#endif
/* This is the init entry, Because init() use "blx", it is not needed
* to handle arm/thumb switch here
*/
int rtems(int argc, char **argv)
{
local = 1;
printf("In rtems() local = %d\n", local); //inner-module data access
hello(1); //inner-module call
test(argc, argv);
#if defined (__arm__)
#ifdef THUMB_TEST
__asm__ volatile (
"push {r0}\r\n"
"push {lr}\r\n"
"mov r0, #19\r\n"
"cmp r0, #19\r\n"
"mov lr, pc\r\n"
"add lr, #7\r\n"
"beq rtems_thumb\r\n" /*THM_JUMP19*/
"nop\r\n"
"nop\r\n"
"nop\r\n"
"nop\r\n"
"pop {lr}\r\n"
"pop {r0}\r\n"
);
__asm__ volatile (
"push {r0}\r\n"
"push {lr}\r\n"
"mov r0, #24\r\n"
"mov lr, pc\r\n"
"add lr, #7\r\n"
"b.w rtems_thumb\r\n" /*THM_JUMP24*/
"nop\r\n"
"nop\r\n"
"nop\r\n"
"nop\r\n"
"pop {lr}\r\n"
"pop {r0}\r\n"
);
#elif defined ARM_TEST
/*arm instruction test*/
__asm__ volatile (
"push {r0}\r\n"
"push {lr}\r\n"
"mov r0, #24\r\n"
"mov lr, pc\r\n"
"add lr, #4\r\n"
"b rtems_arm\r\n" /*JUMP24*/
"nop\r\n"
"nop\r\n"
"nop\r\n"
"nop\r\n"
"pop {lr}\r\n"
"pop {r0}\r\n"
);
#endif
#elif defined PPC
__asm__ volatile (
"stwu 3, -8(1)\r\n"
"li 3, 24\r\n"
"bla hello\r\n" /*ADDR24*/
"nop\r\n"
"nop\r\n"
"lwz 3, 8(1)\r\n"
"addi 1, 1, 8\r\n"
);
__asm__ volatile (
"stwu 3, -4(1)\r\n"
"li 3, 14\r\n"
"cmpwi cr7, 3, 14\r\n"
"bl 1f\r\n"
"1: mflr 6\r\n"
"addi 6, 6, 20\r\n"
"mtlr 6\r\n"
"beq cr7, hello\r\n" /*REL14*/
"nop\r\n"
"nop\r\n"
"nop\r\n"
"lwz 3, 4(1)\r\n"
"addi 1, 1, 4\r\n"
);
#elif defined (__mips__)
__asm__ volatile (
"addiu $29, $29, -8\n\t"
"sw $24,4($29)\n\t"
"sw $25,0($29)\n\t"
"la $24, 1f\n\t"
"lw $24, 0($24)\n\t"
"li $25, 32\t\n"
"sw $25, 0($24)\n\t"
"j 3f\n\t"
"1:\n\t"
".word global\n\t"
"3:\n\t"
"lw $24,4($29)\n\t"
"lw $25,0($29)\n\t"
"addiu $29, $29, 8\n\t"
);
if (global == 32)
printf("R_MIPS_32: '.word global' pass \n");
#if 1
printf("R_MIPS_32: '.word global' pass \n");
#endif
__asm__ volatile (
"la $31, 1f\n\t"
"b tst_pc16\n\t" /* R_MIPS_PC16 */
"j tst_pc16\n\t"
"1:\n\t"
"nop\n\t"
);
#elif defined (__sparc__)
__asm__ volatile (
"sethi %%hi(1f), %%l5\n\t"
"ld [%%l5 + %%lo(1f)], %%l4\n\t"
"mov 32, %%l5\n\t"
"st %%l5, [%%l4]\n\t"
"b 2f\n\t"
"nop\n\t"
"nop\n\t"
"1:\n\t"
".word global\n\t" /* R_SPARC_32 */
"2:\n\t"
"nop\n\t"
"nop\n\t" : : : "l4", "l5");
if (global == 32)
printf("R_SPARC_32: '.word global' pass\n");
__asm__ volatile (
"mov %%o0, %%l4\n\t"
"mov 22, %%o0\n\t"
"sethi %%hi(3f), %%o7\n\t"
"or %%o7, %%lo(3f), %%o7\n\t"
"b hello\n\t" /* R_SPARC_WDISP22 */
"nop\n\t"
"3:\t\n"
"nop\n\t"
"mov %%l4, %%o0\n\t"
"nop\n\t" : : : "o0", "o7"
);
/* R_SPARC_13: Overflow are not checked, Thus
* should use assemble language to handle this
* to avoid overflow.
*/
__asm__ volatile (
"mov hello, %%l4\n\t"
"and %%l4, 0x3ff, %%l4\n\t"
"sethi %%hi(hello), %%l5\n\t"
"or %%l4, %%l5, %%l4\n\t"
"mov %%o0, %%l5\n\t"
"mov 13, %%o0\n\t"
"call hello\n\t"
"nop\n\t"
"mov %%l5, %%o0\n\t"
"nop\n\t": : :
);
#else
/* other archs */
#endif
return 0;
}
|
