x86check.c
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上传日期:2022-08-06
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- /* x86 calling conventions checking. */
- /*
- Copyright 2000, 2001 Free Software Foundation, Inc.
- This file is part of the GNU MP Library.
- The GNU MP Library is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 3 of the License, or (at your
- option) any later version.
- The GNU MP Library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
- License for more details.
- You should have received a copy of the GNU Lesser General Public License
- along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
- #include <stdio.h>
- #include "gmp.h"
- #include "gmp-impl.h"
- #include "tests.h"
- /* temporaries */
- int calling_conventions_save_ebx;
- int calling_conventions_save_esi;
- int calling_conventions_save_edi;
- int calling_conventions_save_ebp;
- int calling_conventions_retaddr;
- int calling_conventions_retval;
- /* values to check */
- struct {
- unsigned control;
- unsigned status;
- unsigned tag;
- unsigned other[4];
- } calling_conventions_fenv;
- int calling_conventions_ebx;
- int calling_conventions_esi;
- int calling_conventions_edi;
- int calling_conventions_ebp;
- int calling_conventions_eflags;
- /* expected values, as per x86call.asm */
- #define VALUE_EBX 0x01234567
- #define VALUE_ESI 0x89ABCDEF
- #define VALUE_EDI 0xFEDCBA98
- #define VALUE_EBP 0x76543210
- #define DIR_BIT(eflags) (((eflags) & (1<<10)) != 0)
- /* Return 1 if ok, 0 if not */
- int
- calling_conventions_check (void)
- {
- const char *header = "Violated calling conventions:n";
- int ret = 1;
- #define CHECK(callreg, regstr, value)
- if (callreg != value)
- {
- printf ("%s %s got 0x%08X want 0x%08Xn",
- header, regstr, callreg, value);
- header = "";
- ret = 0;
- }
- CHECK (calling_conventions_ebx, "ebx", VALUE_EBX);
- CHECK (calling_conventions_esi, "esi", VALUE_ESI);
- CHECK (calling_conventions_edi, "edi", VALUE_EDI);
- CHECK (calling_conventions_ebp, "ebp", VALUE_EBP);
- if (DIR_BIT (calling_conventions_eflags) != 0)
- {
- printf ("%s eflags dir bit got %d want 0n",
- header, DIR_BIT (calling_conventions_eflags));
- header = "";
- ret = 0;
- }
- if ((calling_conventions_fenv.tag & 0xFFFF) != 0xFFFF)
- {
- printf ("%s fpu tags got 0x%X want 0xFFFFn",
- header, calling_conventions_fenv.tag & 0xFFFF);
- header = "";
- ret = 0;
- }
- return ret;
- }