github.com/aergoio/aergo@v1.3.1/libtool/src/gmp-6.1.2/tests/x86check.c (about)

     1  /* x86 calling conventions checking. */
     2  
     3  /*
     4  Copyright 2000, 2001, 2010 Free Software Foundation, Inc.
     5  
     6  This file is part of the GNU MP Library test suite.
     7  
     8  The GNU MP Library test suite is free software; you can redistribute it
     9  and/or modify it under the terms of the GNU General Public License as
    10  published by the Free Software Foundation; either version 3 of the License,
    11  or (at your option) any later version.
    12  
    13  The GNU MP Library test suite is distributed in the hope that it will be
    14  useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
    15  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
    16  Public License for more details.
    17  
    18  You should have received a copy of the GNU General Public License along with
    19  the GNU MP Library test suite.  If not, see https://www.gnu.org/licenses/.  */
    20  
    21  #include <stdio.h>
    22  #include "gmp.h"
    23  #include "gmp-impl.h"
    24  #include "tests.h"
    25  
    26  
    27  /* Vector if constants and register values.  We use one vector to allow access
    28     via a base pointer, very beneficial for the PIC-enabled amd64call.asm.  */
    29  mp_limb_t calling_conventions_values[17] =
    30  {
    31    CNST_LIMB(0x12345678),	/* want_ebx */
    32    CNST_LIMB(0x89ABCDEF),	/* want_ebp */
    33    CNST_LIMB(0xDEADBEEF),	/* want_esi */
    34    CNST_LIMB(0xFFEEDDCC),	/* want_edi */
    35  
    36    CNST_LIMB(0xFEEDABBA),	/* JUNK_EAX */
    37    CNST_LIMB(0xAB78DE89),	/* JUNK_ECX */
    38    CNST_LIMB(0x12389018)		/* JUNK_EDX */
    39  
    40    /* rest of array used for dynamic values.  */
    41  };
    42  
    43  /* Index starts for various regions in above vector.  */
    44  #define WANT	0
    45  #define JUNK	4
    46  #define SAVE	7
    47  #define RETADDR	11
    48  #define VAL	12
    49  #define EFLAGS	16
    50  
    51  
    52  /* values to check */
    53  #ifdef __cplusplus
    54  extern "C" {
    55  #endif
    56  struct {
    57    unsigned  control;
    58    unsigned  status;
    59    unsigned  tag;
    60    unsigned  other[4];
    61  } calling_conventions_fenv;
    62  #ifdef __cplusplus
    63  }
    64  #endif
    65  
    66  /* expected values, as per x86call.asm */
    67  #define VALUE_EBX   0x01234567
    68  #define VALUE_ESI   0x89ABCDEF
    69  #define VALUE_EDI   0xFEDCBA98
    70  #define VALUE_EBP   0x76543210
    71  
    72  
    73  const char *regname[] = {"ebx", "ebp", "esi", "edi"};
    74  
    75  #define DIR_BIT(eflags)   (((eflags) & (1<<10)) != 0)
    76  
    77  
    78  /* Return 1 if ok, 0 if not */
    79  
    80  int
    81  calling_conventions_check (void)
    82  {
    83    const char  *header = "Violated calling conventions:\n";
    84    int  ret = 1;
    85    int i;
    86  
    87  #define CHECK(callreg, regstr, value)                   \
    88    if (callreg != value)                                 \
    89      {                                                   \
    90        printf ("%s   %s  got 0x%08X want 0x%08X\n",      \
    91                header, regstr, callreg, value);          \
    92        header = "";                                      \
    93        ret = 0;                                          \
    94      }
    95  
    96    for (i = 0; i < 4; i++)
    97      {
    98        CHECK (calling_conventions_values[VAL+i], regname[i], calling_conventions_values[WANT+i]);
    99      }
   100  
   101    if (DIR_BIT (calling_conventions_values[EFLAGS]) != 0)
   102      {
   103        printf ("%s   eflags dir bit  got %d want 0\n",
   104                header, DIR_BIT (calling_conventions_values[EFLAGS]));
   105        header = "";
   106        ret = 0;
   107      }
   108  
   109    if ((calling_conventions_fenv.tag & 0xFFFF) != 0xFFFF)
   110      {
   111        printf ("%s   fpu tags  got 0x%X want 0xFFFF\n",
   112                header, calling_conventions_fenv.tag & 0xFFFF);
   113        header = "";
   114        ret = 0;
   115      }
   116  
   117    return ret;
   118  }