gcc/testsuite/g++.dg/torture/stackalign/test-unwind.h

   1 #include "check.h"
   2
   3
   4 #define ASMNAME(cname)  ASMNAME2 (__USER_LABEL_PREFIX__, cname)
   5 #define ASMNAME2(prefix, cname) STRING (prefix) cname
   6 #define STRING(x)    #x
   7
   8 #ifdef  __cplusplus
   9 extern "C" void abort (void);
  10 #else
  11 extern void abort (void);
  12 #endif
  13
  14 extern void foo(void);
  15
  16 #define INIT_EDI 1
  17 #define INIT_ESI 2
  18 #define INIT_EBX 3
  19
  20 /* Set DI/SI/BX to wrong value
  21    Use following template so that RA will save/restore callee
  22    save registers in prologue/epilogue */
  23 #define ALTER_REGS() \
  24   { \
  25         int dummy;      \
  26         __asm__  __volatile__ (\
  27         "movl %1, %0" : "=D" (dummy) : "i" (-INIT_EDI)\
  28         );\
  29         __asm__  __volatile__ (\
  30         "movl %1, %0" : "=S" (dummy) : "i" (-INIT_ESI)\
  31         );\
  32         __asm__  __volatile__ (\
  33         "movl %1, %0" : "=b" (dummy) : "i" (-INIT_EBX)\
  34         );\
  35   }
  36
  37 #if defined __PIC__ || defined __USING_SJLJ_EXCEPTIONS__
  38 int
  39 main ()
  40 {
  41   return 0;
  42 }
  43 #else
  44 void __attribute__ ((noinline))
  45 copy (char *p, int size)
  46 {
  47   __builtin_strncpy (p, "good", size);
  48 }
  49
  50 int g_edi=INIT_EDI, g_esi=INIT_ESI, g_ebx=INIT_EBX;
  51 int g_ebp, g_ebp_save, g_esp, g_esp_save;
  52 int n_error;
  53
  54 int
  55 main()
  56 {
  57         int dummy;
  58         // Init registers to correct value.
  59         // Use following template so that RA will save/restore callee
  60         // save registers in prologue/epilogue
  61         __asm__  __volatile__ (
  62         "movl %1, %0"
  63         : "=D" (dummy)
  64         : "i" (INIT_EDI)
  65         );
  66         __asm__  __volatile__ (
  67         "movl %1, %0"
  68         : "=S" (dummy)
  69         : "i" (INIT_ESI)
  70         );
  71         __asm__  __volatile__ (
  72         "movl %1, %0"
  73         : "=b" (dummy)
  74         : "i" (INIT_EBX)
  75         );
  76         __asm__ __volatile__ (
  77         "movl %ebp," ASMNAME("g_ebp_save")"\n\t"
  78         "movl %esp," ASMNAME("g_esp_save")"\n\t"
  79         );
  80         try {
  81                 foo();
  82         }
  83         catch (...)
  84         {
  85         }
  86
  87         // Get DI/SI/BX register value after exception caught
  88         __asm__ __volatile__ (
  89         "movl %edi," ASMNAME("g_edi")"\n\t"
  90         "movl %esi," ASMNAME("g_esi")"\n\t"
  91         "movl %ebx," ASMNAME("g_ebx")"\n\t"
  92         "movl %ebp," ASMNAME("g_ebp")"\n\t"
  93         "movl %esp," ASMNAME("g_esp")"\n\t"
  94         );
  95
  96         // Check if DI/SI/BX register value are the same as before calling
  97         // foo.
  98         if (g_edi != INIT_EDI)
  99         {
 100                 n_error++;
 101 #ifdef DEBUG
 102                 printf("edi=%d, correct value:%d\n", g_edi, INIT_EDI);
 103 #endif
 104         }
 105         if (g_esi != INIT_ESI)
 106         {
 107                 n_error++;
 108 #ifdef DEBUG
 109                 printf("esi=%d, correct value:%d\n", g_esi, INIT_ESI);
 110 #endif
 111         }
 112         if (g_ebx != INIT_EBX)
 113         {
 114                 n_error++;
 115 #ifdef DEBUG
 116                 printf("ebx=%d, correct value:%d\n", g_ebx, INIT_EBX);
 117 #endif
 118         }
 119         if (g_ebp != g_ebp_save)
 120         {
 121                 n_error++;
 122 #ifdef DEBUG
 123                 printf("ebp=0x%x, correct value:0x%x\n", g_ebp, g_ebp_save);
 124 #endif
 125         }
 126         if (g_esp != g_esp_save)
 127         {
 128                 n_error++;
 129 #ifdef DEBUG
 130                 printf("esp=0x%x, correct value:0x%x\n", g_esp, g_esp_save);
 131 #endif
 132         }
 133         if (n_error !=0)
 134                 abort();
 135         return 0;
 136 }
 137 #endif