clang/test/Sema/attr-x86-interrupt.c

   1 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu  -fsyntax-only -verify %s
   2 // RUN: %clang_cc1 -triple i386-unknown-linux-gnu  -fsyntax-only -verify %s
   3 // RUN: %clang_cc1 -triple x86_64-pc-win32  -fsyntax-only -verify %s
   4 // RUN: %clang_cc1 -triple i386-pc-win32  -fsyntax-only -verify %s
   5 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnux32  -fsyntax-only -verify %s
   6 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu  -fsyntax-only -verify %s -DNOCALLERSAVE=1
   7
   8 struct a {
   9   int b;
  10 };
  11
  12 struct a test __attribute__((interrupt)); // expected-warning {{'interrupt' attribute only applies to non-K&R-style functions}}
  13
  14 __attribute__((interrupt)) int foo1(void) { return 0; }             // expected-error-re {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'void' return type}}
  15 __attribute__((interrupt)) void foo2(void) {}                       // expected-error-re {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have only a pointer parameter optionally followed by an integer parameter}}
  16 __attribute__((interrupt)) void foo3(void *a, unsigned b, int c) {} // expected-error-re {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have only a pointer parameter optionally followed by an integer parameter}}
  17 __attribute__((interrupt)) void foo4(int a) {}                      // expected-error-re {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a pointer as the first parameter}}
  18 #ifdef _LP64
  19 // expected-error-re@+6 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long' type as the second parameter}}
  20 #elif defined(__x86_64__)
  21 // expected-error-re@+4 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long long' type as the second parameter}}
  22 #else
  23 // expected-error-re@+2 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned int' type as the second parameter}}
  24 #endif
  25 __attribute__((interrupt)) void foo5(void *a, float b) {}
  26 #ifdef _LP64
  27 // expected-error-re@+6 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long' type as the second parameter}}
  28 #elif defined(__x86_64__)
  29 // expected-error-re@+4 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long long' type as the second parameter}}
  30 #else
  31 // expected-error-re@+2 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned int' type as the second parameter}}
  32 #endif
  33 __attribute__((interrupt)) void foo6(float *a, int b) {}
  34
  35 #ifdef _LP64
  36 // expected-error-re@+4 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long' type as the second parameter}}
  37 #elif defined(__x86_64__)
  38 // expected-error-re@+2 {{{{(x86|x86-64)}} 'interrupt' attribute only applies to functions that have a 'unsigned long long' type as the second parameter}}
  39 #endif
  40 __attribute__((interrupt)) void foo7(int *a, unsigned b) {}
  41 __attribute__((interrupt)) void foo8(int *a) {}
  42
  43 void g(void (*fp)(int *));
  44 int main(int argc, char **argv) {
  45   void *ptr = (void *)&foo7;
  46   g(foo8);
  47
  48   (void)ptr;
  49 #ifndef __x86_64__
  50   // expected-error@+2 {{interrupt service routine cannot be called directly}}
  51 #endif
  52   foo7((int *)argv, argc);
  53   foo8((int *)argv);       // expected-error {{interrupt service routine cannot be called directly}}
  54   return 0;
  55 }
  56