clang/test/Sema/attr-naked.c

   1 // RUN: %clang_cc1 %s -verify -fsyntax-only -triple i686-pc-linux
   2
   3 int a __attribute__((naked)); // expected-warning {{'naked' attribute only applies to functions}}
   4
   5 __attribute__((naked)) int t0(void) {
   6   __asm__ volatile("mov r0, #0");
   7 }
   8
   9 void t1(void) __attribute__((naked));
  10
  11 void t2(void) __attribute__((naked(2))); // expected-error {{'naked' attribute takes no arguments}}
  12
  13 __attribute__((naked)) int t3(void) { // expected-note{{attribute is here}}
  14   return 42; // expected-error{{non-ASM statement in naked function is not supported}}
  15 }
  16
  17 __attribute__((naked)) int t4(void) {
  18   asm("movl $42, %eax");
  19   asm("retl");
  20 }
  21
  22 __attribute__((naked)) int t5(int x) {
  23   asm("movl x, %eax");
  24   asm("retl");
  25 }
  26
  27 __attribute__((naked)) void t6(void) {
  28   ;
  29 }
  30
  31 __attribute__((naked)) void t7(void) {
  32   asm("movl $42, %eax");
  33   ;
  34 }
  35
  36 extern int x, y;
  37
  38 __attribute__((naked)) void t8(int z) { // expected-note{{attribute is here}}
  39   __asm__ ("movl $42, %1"
  40            : "=r"(x),
  41              "=r"(z) // expected-error{{parameter references not allowed in naked functions}}
  42            );
  43 }
  44
  45 __attribute__((naked)) void t9(int z) { // expected-note{{attribute is here}}
  46   __asm__ ("movl %eax, %1"
  47            : : "r"(x),
  48                "r"(z) // expected-error{{parameter references not allowed in naked functions}}
  49            );
  50 }
  51
  52 __attribute__((naked)) void t10(void) {  // expected-note{{attribute is here}}
  53   int a; // expected-error{{non-ASM statement in naked function is not supported}}
  54 }
  55
  56 __attribute__((naked)) void t11(void) {  // expected-note{{attribute is here}}
  57   register int a asm("eax") = x; // expected-error{{non-ASM statement in naked function is not supported}}
  58 }
  59
  60 __attribute__((naked)) void t12(void) {  // expected-note{{attribute is here}}
  61   register int a asm("eax"), b asm("ebx") = x; // expected-error{{non-ASM statement in naked function is not supported}}
  62 }
  63
  64 __attribute__((naked)) void t13(void) {
  65   register int a asm("eax");
  66   register int b asm("ebx"), c asm("ecx");
  67 }
  68