Subversion Repositories openrisc_2011-10-31

/* { dg-do run { target *-*-linux* } } */

/* { dg-require-effective-target lp64 } */

/* { dg-options "-fexceptions -fnon-call-exceptions -fasynchronous-unwind-tables -O2" } */

/* Test complex CFA value expressions.  */

#include <unwind.h>

#include <stdlib.h>

#include <string.h>

#include <stdio.h>

#include <unistd.h>

static _Unwind_Reason_Code

force_unwind_stop (int version, _Unwind_Action actions,

                   _Unwind_Exception_Class exc_class,

                   struct _Unwind_Exception *exc_obj,

                   struct _Unwind_Context *context,

                   void *stop_parameter)

{

  if (actions & _UA_END_OF_STACK)

    abort ();

  return _URC_NO_REASON;

}

static void

force_unwind ()

{

  struct _Unwind_Exception *exc = malloc (sizeof (*exc));

  memset (&exc->exception_class, 0, sizeof (exc->exception_class));

  exc->exception_cleanup = 0;

  _Unwind_ForcedUnwind (exc, force_unwind_stop, 0);

  abort ();

}

int count;

static void

counter (void *p __attribute__((unused)))

{

  ++count;

}

static void

handler (void *p __attribute__((unused)))

{

  if (count != 2)

    abort ();

  _exit (0);

}

static int __attribute__((noinline))

fn5 (void)

{

  char dummy __attribute__((cleanup (counter)));

  force_unwind ();

  return 0;

}

void

bar (void)

{

  char dummy __attribute__((cleanup (counter)));

  fn5 ();

}

void __attribute__((noinline))

foo (int x)

{

  char buf[256];

#ifdef __x86_64__

  __asm (

        "testl  %0, %0\n\t"

        "jnz    1f\n\t"

        ".subsection 1\n\t"

        ".type  _L_mutex_lock_%=, @function\n"

"_L_mutex_lock_%=:\n"

"1:\t"  "leaq   %1, %%rdi\n"

"2:\t"  "subq   $128, %%rsp\n"

"3:\t"  "call   bar\n"

"4:\t"  "addq   $128, %%rsp\n"

"5:\t"  "jmp    21f\n"

"6:\t"  ".size _L_mutex_lock_%=, .-_L_mutex_lock_%=\n\t"

        ".previous\n\t"

        ".section       .eh_frame,\"a\",@progbits\n"

"7:\t"  ".long  9f-8f   # Length of Common Information Entry\n"

"8:\t"  ".long  0x0     # CIE Identifier Tag\n\t"

        ".byte  0x1     # CIE Version\n\t"

        ".ascii \"zR\\0\"        # CIE Augmentation\n\t"

        ".uleb128 0x1   # CIE Code Alignment Factor\n\t"

        ".sleb128 -8    # CIE Data Alignment Factor\n\t"

        ".byte  0x10    # CIE RA Column\n\t"

        ".uleb128 0x1   # Augmentation size\n\t"

        ".byte  0x1b    # FDE Encoding (pcrel sdata4)\n\t"

        ".byte  0xc     # DW_CFA_def_cfa\n\t"

        ".uleb128 0x7\n\t"

        ".uleb128 0x0\n\t"

        ".align 8\n"

"9:\t"  ".long  20f-10f # FDE Length\n"

"10:\t" ".long  10b-7b  # FDE CIE offset\n\t"

        ".long  1b-.    # FDE initial location\n\t"

        ".long  6b-1b   # FDE address range\n\t"

        ".uleb128 0x0   # Augmentation size\n\t"

        /* This CFA expression computes the address right

           past the jnz instruction above, from %rip somewhere

           within the _L_mutex_lock_%= subsection.  */

        ".byte  0x16    # DW_CFA_val_expression\n\t"

        ".uleb128 0x10\n\t"

        ".uleb128 19f-11f\n"

"11:\t" ".byte  0x80    # DW_OP_breg16\n\t"

        ".sleb128 0\n"

"12:\t" ".byte  0x12    # DW_OP_dup\n\t"

        ".byte  0x94    # DW_OP_deref_size\n\t"

        ".byte  1\n\t"

        ".byte  0x12    # DW_OP_dup\n\t"

        ".byte  0x08    # DW_OP_const1u\n\t"

        ".byte  0x48\n\t"

        ".byte  0x2e    # DW_OP_ne\n\t"

        ".byte  0x28    # DW_OP_bra\n\t"

        ".2byte 16f-13f\n"

"13:\t" ".byte  0x13    # DW_OP_drop\n\t"

        ".byte  0x23    # DW_OP_plus_uconst\n\t"

        ".uleb128 1\n\t"

        ".byte  0x12    # DW_OP_dup\n\t"

        ".byte  0x94    # DW_OP_deref_size\n\t"

        ".byte  1\n\t"

        ".byte  0x08    # DW_OP_const1u\n\t"

        ".byte  0x81\n\t"

        ".byte  0x2e    # DW_OP_ne\n\t"

        ".byte  0x28    # DW_OP_bra\n\t"

        ".2byte 15f-14f\n"

"14:\t" ".byte  0x23    # DW_OP_plus_uconst\n\t"

        ".uleb128 3b-2b-1\n\t"

        ".byte  0x2f    # DW_OP_skip\n\t"

        ".2byte 12b-15f\n"

"15:\t" ".byte  0x23    # DW_OP_plus_uconst\n\t"

        ".uleb128 2b-1b-1\n\t"

        ".byte  0x2f    # DW_OP_skip\n\t"

        ".2byte 12b-16f\n"

"16:\t" ".byte  0x08    # DW_OP_const1u\n\t"

        ".byte  0xe8\n\t"

        ".byte  0x2e    # DW_OP_ne\n\t"

        ".byte  0x28    # DW_OP_bra\n\t"

        ".2byte 18f-17f\n"

"17:\t" ".byte  0x23    # DW_OP_plus_uconst\n\t"

        ".uleb128 4b-3b\n\t"

        ".byte  0x2f    # DW_OP_skip\n\t"

        ".2byte 12b-18f\n"

"18:\t" ".byte  0x23    # DW_OP_plus_uconst\n\t"

        ".uleb128 1\n\t"

        ".byte  0x12    # DW_OP_dup\n\t"

        ".byte  0x94    # DW_OP_deref_size\n\t"

        ".byte  4\n\t"

        ".byte  0x08    # DW_OP_const1u\n\t"

        ".byte  72 - (6b-5b) * 8 # (6b-5b) == 5 ? 32 : 56\n\t"

        ".byte  0x24    # DW_OP_shl\n\t"

        ".byte  0x08    # DW_OP_const1u\n\t"

        ".byte  72 - (6b-5b) * 8 # (6b-5b) == 5 ? 32 : 56\n\t"

        ".byte  0x26    # DW_OP_shra\n\t"

        ".byte  0x22    # DW_OP_plus\n\t"

        ".byte  0x23    # DW_OP_plus_uconst\n\t"

        ".uleb128 6b-5b-1\n"

"19:\t" ".byte  0x40 + (3b-1b) # DW_CFA_advance_loc\n\t"

        ".byte  0xe     # DW_CFA_def_cfa_offset\n\t"

        ".uleb128 128\n\t"

        ".byte  0x40 + (5b-3b) # DW_CFA_advance_loc\n\t"

        ".byte  0xe     # DW_CFA_def_cfa_offset\n\t"

        ".uleb128 0\n\t"

        ".align 8\n"

"20:\t" ".previous\n"

"21:"

        : : "r" (x), "m" (x), "r" (buf)

        : "memory", "rax", "rdx", "rcx", "rsi", "rdi",

          "r8", "r9", "r10", "r11");

#else

# error Unsupported test architecture

#endif

}

static int __attribute__((noinline))

fn2 (void)

{

  foo (3);

  return 0;

}

static int __attribute__((noinline))

fn1 (void)

{

  fn2 ();

  return 0;

}

static void *

fn0 (void)

{

  char dummy __attribute__((cleanup (handler)));

  fn1 ();

  return 0;

}

int

main (void)

{

  fn0 ();

  return 0;

}