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Annotation of OpenXM_contrib/gmp/mpn/tests/x86call.asm, Revision 1.1.1.1

1.1       maekawa     1: dnl  x86 calling conventions checking.
                      2:
                      3: dnl  Copyright (C) 2000 Free Software Foundation, Inc.
                      4: dnl
                      5: dnl  This file is part of the GNU MP Library.
                      6: dnl
                      7: dnl  The GNU MP Library is free software; you can redistribute it and/or
                      8: dnl  modify it under the terms of the GNU Lesser General Public License as
                      9: dnl  published by the Free Software Foundation; either version 2.1 of the
                     10: dnl  License, or (at your option) any later version.
                     11: dnl
                     12: dnl  The GNU MP Library is distributed in the hope that it will be useful,
                     13: dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
                     14: dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     15: dnl  Lesser General Public License for more details.
                     16: dnl
                     17: dnl  You should have received a copy of the GNU Lesser General Public
                     18: dnl  License along with the GNU MP Library; see the file COPYING.LIB.  If
                     19: dnl  not, write to the Free Software Foundation, Inc., 59 Temple Place -
                     20: dnl  Suite 330, Boston, MA 02111-1307, USA.
                     21:
                     22:
                     23: include(`../config.m4')
                     24:
                     25:
                     26: C int calling_conventions (...);
                     27: C
                     28: C The global variable "calling_conventions_function" is the function to
                     29: C call, with the arguments as passed here.
                     30: C
                     31: C Perhaps the finit should be done only if the tags word isn't clear, but
                     32: C nothing uses the rounding mode or anything at the moment.
                     33:
                     34: define(G,
                     35: m4_assert_numargs(1)
                     36: `GSYM_PREFIX`'$1')
                     37:
                     38:        .text
                     39:        ALIGN(8)
                     40: PROLOGUE(calling_conventions)
                     41:        movl    (%esp), %eax
                     42:        movl    %eax, G(calling_conventions_retaddr)
                     43:
                     44:        movl    $L(return), (%esp)
                     45:
                     46:        movl    %ebx, G(calling_conventions_save_ebx)
                     47:        movl    %esi, G(calling_conventions_save_esi)
                     48:        movl    %edi, G(calling_conventions_save_edi)
                     49:        movl    %ebp, G(calling_conventions_save_ebp)
                     50:
                     51:        movl    $0x01234567, %ebx
                     52:        movl    $0x89ABCDEF, %esi
                     53:        movl    $0xFEDCBA98, %edi
                     54:        movl    $0x76543210, %ebp
                     55:
                     56:        C try to provoke a problem by starting with junk in the registers,
                     57:        C especially in %eax and %edx which will be return values
                     58:        movl    $0x70246135, %eax
                     59:        movl    $0x8ACE9BDF, %ecx
                     60:        movl    $0xFDB97531, %edx
                     61:
                     62:        jmp     *G(calling_conventions_function)
                     63:
                     64: L(return):
                     65:        movl    %ebx, G(calling_conventions_ebx)
                     66:        movl    %esi, G(calling_conventions_esi)
                     67:        movl    %edi, G(calling_conventions_edi)
                     68:        movl    %ebp, G(calling_conventions_ebp)
                     69:
                     70:        pushf
                     71:        popl    %ebx
                     72:        movl    %ebx, G(calling_conventions_eflags)
                     73:
                     74:        fstenv  G(calling_conventions_fenv)
                     75:        finit
                     76:
                     77:        movl    G(calling_conventions_save_ebx), %ebx
                     78:        movl    G(calling_conventions_save_esi), %esi
                     79:        movl    G(calling_conventions_save_edi), %edi
                     80:        movl    G(calling_conventions_save_ebp), %ebp
                     81:
                     82:        jmp     *G(calling_conventions_retaddr)
                     83:
                     84: EPILOGUE()
                     85: