100 lines
3.0 KiB
C
100 lines
3.0 KiB
C
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/* x86 calling conventions checking. */
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/*
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Copyright 2000, 2001 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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*/
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#include <stdio.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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#include "tests.h"
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/* temporaries */
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int calling_conventions_save_ebx;
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int calling_conventions_save_esi;
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int calling_conventions_save_edi;
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int calling_conventions_save_ebp;
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int calling_conventions_retaddr;
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int calling_conventions_retval;
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/* values to check */
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struct {
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unsigned control;
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unsigned status;
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unsigned tag;
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unsigned other[4];
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} calling_conventions_fenv;
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int calling_conventions_ebx;
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int calling_conventions_esi;
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int calling_conventions_edi;
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int calling_conventions_ebp;
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int calling_conventions_eflags;
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/* expected values, as per x86call.asm */
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#define VALUE_EBX 0x01234567
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#define VALUE_ESI 0x89ABCDEF
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#define VALUE_EDI 0xFEDCBA98
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#define VALUE_EBP 0x76543210
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#define DIR_BIT(eflags) (((eflags) & (1<<10)) != 0)
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/* Return 1 if ok, 0 if not */
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int
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calling_conventions_check (void)
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{
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const char *header = "Violated calling conventions:\n";
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int ret = 1;
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#define CHECK(callreg, regstr, value) \
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if (callreg != value) \
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{ \
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printf ("%s %s got 0x%08X want 0x%08X\n", \
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header, regstr, callreg, value); \
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header = ""; \
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ret = 0; \
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}
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CHECK (calling_conventions_ebx, "ebx", VALUE_EBX);
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CHECK (calling_conventions_esi, "esi", VALUE_ESI);
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CHECK (calling_conventions_edi, "edi", VALUE_EDI);
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CHECK (calling_conventions_ebp, "ebp", VALUE_EBP);
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if (DIR_BIT (calling_conventions_eflags) != 0)
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{
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printf ("%s eflags dir bit got %d want 0\n",
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header, DIR_BIT (calling_conventions_eflags));
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header = "";
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ret = 0;
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}
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if ((calling_conventions_fenv.tag & 0xFFFF) != 0xFFFF)
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{
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printf ("%s fpu tags got 0x%X want 0xFFFF\n",
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header, calling_conventions_fenv.tag & 0xFFFF);
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header = "";
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ret = 0;
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}
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return ret;
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}
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