compiler-rt/test/asan/TestCases/Linux/clang_gcc_abi.cpp

   1 // RUN: %clangxx_asan -O0 -x c %s -o %t && not %env_asan_opts=fast_unwind_on_malloc=1 %run %t 2>&1 | FileCheck %s
   2 // RUN: %clangxx_asan -O1 -x c %s -o %t && not %env_asan_opts=fast_unwind_on_malloc=1 %run %t 2>&1 | FileCheck %s
   3 // RUN: %clangxx_asan -O2 -x c %s -o %t && not %env_asan_opts=fast_unwind_on_malloc=1 %run %t 2>&1 | FileCheck %s
   4 // RUN: %clangxx_asan -O3 -x c %s -o %t && not %env_asan_opts=fast_unwind_on_malloc=1 %run %t 2>&1 | FileCheck %s
   5
   6 // REQUIRES: (arm-target-arch || armhf-target-arch), fast-unwinder-works
   7
   8 #include <stdlib.h>
   9
  10 __attribute__((noinline))
  11 int boom() {
  12   volatile int three = 3;
  13   char * volatile s = (char *)malloc(three);
  14 // CHECK: #1 0x{{.*}} in boom {{.*}}clang_gcc_abi.cpp:[[@LINE-1]]
  15   return s[three]; //BOOM
  16 }
  17
  18 __attribute__((naked, noinline)) void gcc_abi() {
  19 // CHECK: #2 0x{{.*}} in gcc_abi {{.*}}clang_gcc_abi.cpp:[[@LINE+1]]
  20   asm volatile("str fp, [sp, #-8]!\n\t"
  21                "str lr, [sp, #4]\n\t"
  22                "add fp, sp, #4\n\t"
  23                "bl  boom\n\t"
  24                "sub sp, fp, #4\n\t"
  25                "ldr fp, [sp]\n\t"
  26                "add sp, sp, #4\n\t"
  27                "ldr pc, [sp], #4\n\t"
  28               );
  29 }
  30
  31 __attribute__((naked, noinline)) void clang_abi() {
  32 // CHECK: #3 0x{{.*}} in clang_abi {{.*}}clang_gcc_abi.cpp:[[@LINE+1]]
  33   asm volatile("push {r11, lr}\n\t"
  34                "mov r11, sp\n\t"
  35                "bl  gcc_abi\n\t"
  36                "add r0, r0, #1\n\t"
  37                "pop {r11, pc}\n\t"
  38               );
  39 }
  40
  41 int main() {
  42   clang_abi();
  43 // CHECK: #4 0x{{.*}} in main {{.*}}clang_gcc_abi.cpp:[[@LINE-1]]
  44 }