libgo/misc/cgo/testcshared/main1.c

   1 // Copyright 2015 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 #include <stdint.h>
   6 #include <stdio.h>
   7 #include <dlfcn.h>
   8
   9 int check_int8(void* handle, const char* fname, int8_t want) {
  10   int8_t (*fn)();
  11   fn = (int8_t (*)())dlsym(handle, fname);
  12   if (!fn) {
  13     fprintf(stderr, "ERROR: missing %s: %s\n", fname, dlerror());
  14     return 1;
  15   }
  16   signed char ret = fn();
  17   if (ret != want) {
  18     fprintf(stderr, "ERROR: %s=%d, want %d\n", fname, ret, want);
  19     return 1;
  20   }
  21   return 0;
  22 }
  23
  24 int check_int32(void* handle, const char* fname, int32_t want) {
  25   int32_t (*fn)();
  26   fn = (int32_t (*)())dlsym(handle, fname);
  27   if (!fn) {
  28     fprintf(stderr, "ERROR: missing %s: %s\n", fname, dlerror());
  29     return 1;
  30   }
  31   int32_t ret = fn();
  32   if (ret != want) {
  33     fprintf(stderr, "ERROR: %s=%d, want %d\n", fname, ret, want);
  34     return 1;
  35   }
  36   return 0;
  37 }
  38
  39 // Tests libgo.so to export the following functions.
  40 //   int8_t DidInitRun() // returns true
  41 //   int8_t DidMainRun() // returns true
  42 //   int32_t FromPkg() // returns 1024
  43 int main(int argc, char** argv) {
  44   void* handle = dlopen(argv[1], RTLD_LAZY | RTLD_GLOBAL);
  45   if (!handle) {
  46     fprintf(stderr, "ERROR: failed to open the shared library: %s\n",
  47                     dlerror());
  48     return 2;
  49   }
  50
  51   int ret = 0;
  52   ret = check_int8(handle, "DidInitRun", 1);
  53   if (ret != 0) {
  54     return ret;
  55   }
  56
  57   ret = check_int8(handle, "DidMainRun", 0);
  58   if (ret != 0) {
  59     return ret;
  60   }
  61
  62   ret = check_int32(handle, "FromPkg", 1024);
  63   if (ret != 0) {
  64    return ret;
  65   }
  66   // test.bash looks for "PASS" to ensure this program has reached the end.
  67   printf("PASS\n");
  68   return 0;
  69 }