LXR uboot/examples/standalone/x86-testapp.c

   1#include <stddef.h>
   2#include <stdio.h>
   3#include <string.h>
   4
   5void *func[8], **pfunc;
   6
   7typedef struct xxx xxx_t;
   8struct xxx {
   9        int dummy;
  10        void **pfunc;
  11} q;
  12
  13#define XF_strcpy 3
  14#define XF_printf 4
  15
  16#define LABEL(x)                                        \
  17asm volatile (                                          \
  18
  19#if defined(__i386__)
  20#define EXPORT_FUNC(x)                                  \
  21asm volatile (                                          \
  22"       .globl mon_" #x "\n"                            \
  23"mon_" #x ":\n"                                         \
  24"       movl    %0, %%eax\n"                            \
  25"       movl    pfunc, %%ecx\n"                         \
  26"       jmp     *(%%ecx,%%eax)\n"                       \
  27        : : "i"(XF_ ## x * sizeof(void *)) : "eax", "ecx");
  28#elif defined(__powerpc__)
  29#define EXPORT_FUNC(x)                                  \
  30asm volatile (                                          \
  31"       .globl mon_" #x "\n"                            \
  32"mon_" #x ":\n"                                         \
  33"       lwz     %%r11, %0(%%r2)\n"                      \
  34"       lwz     %%r11, %1(%%r11)\n"                     \
  35"       mtctr   %%r11\n"                                \
  36"       bctr\n"                                 \
  37        : : "i"(offsetof(xxx_t, pfunc)), "i"(XF_ ## x * sizeof(void *)) : "r11", "r2");
  38#elif defined(__arm__)
  39#define EXPORT_FUNC(x)                                  \
  40asm volatile (                                          \
  41"       .globl mon_" #x "\n"                            \
  42"mon_" #x ":\n"                                         \
  43"       ldr     ip, [r8, %0]\n"                         \
  44"       ldr     pc, [ip, %1]\n"                         \
  45        : : "i"(offsetof(xxx_t, pfunc)), "i"(XF_ ## x * sizeof(void *)) : "ip");
  46#elif defined(__mips__)
  47#define EXPORT_FUNC(x)                                  \
  48asm volatile (                                          \
  49"       .globl mon_" #x "\n"                            \
  50"mon_" #x ":\n"                                         \
  51"       lw      $25, %0($26)\n"                         \
  52"       lw      $25, %1($25)\n"                         \
  53"       jr      $25\n"                                  \
  54        : : "i"(offsetof(xxx_t, pfunc)), "i"(XF_ ## x * sizeof(void *)) : "t9");
  55#else
  56#error [No stub code for this arch]
  57#endif
  58
  59void dummy(void)
  60{
  61EXPORT_FUNC(printf)
  62EXPORT_FUNC(strcpy)
  63}
  64
  65int main(void)
  66{
  67#if defined(__i386__)
  68        xxx_t *pq;
  69#elif defined(__powerpc__)
  70        register volatile xxx_t *pq asm("r2");
  71#elif defined(__arm__)
  72        register volatile xxx_t *pq asm("r8");
  73#elif defined(__mips__)
  74        register volatile xxx_t *pq asm("k0");
  75#endif
  76        char buf[32];
  77
  78        func[XF_strcpy] = strcpy;
  79        func[XF_printf] = printf;
  80        pq = &q;
  81        pq->pfunc = pfunc = func;
  82
  83        mon_strcpy(buf, "test");
  84        mon_printf("hi %s %d z\n", buf, 444);
  85
  86        return 0;
  87}
  88