amd64check.c
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上传日期:2022-08-06
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文件大小:3k
- /* AMD64 calling conventions checking.
- Copyright 2000, 2001, 2004, 2007 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"
- /* Vector if constants and register values. We use one vector to allow access
- via a base pointer, very beneficial for the PIC-enabled amd64call.asm. */
- mp_limb_t calling_conventions_values[23] =
- {
- CNST_LIMB(0x1234567887654321), /* want_rbx */
- CNST_LIMB(0x89ABCDEFFEDCBA98), /* want_rbp */
- CNST_LIMB(0xDEADBEEFBADECAFE), /* want_r12 */
- CNST_LIMB(0xFFEEDDCCBBAA9988), /* want_r13 */
- CNST_LIMB(0x0011223344556677), /* want_r14 */
- CNST_LIMB(0x1234432156788765), /* want_r15 */
- CNST_LIMB(0xFEEDABBACAAFBEED), /* JUNK_RAX */
- CNST_LIMB(0xAB78DE89FF5125BB), /* JUNK_R10 */
- CNST_LIMB(0x1238901890189031) /* JUNK_R11 */
- /* rest of array used for dynamic values. */
- };
- /* Index starts for various regions in above vector. */
- #define WANT 0
- #define JUNK 6
- #define SAVE 9
- #define RETADDR 15
- #define VAL 16
- #define RFLAGS 22
- /* values to check */
- struct {
- int control;
- int status;
- int tag;
- int other[4];
- } calling_conventions_fenv;
- char *regname[6] = {"rbx", "rbp", "r12", "r13", "r14", "r15"};
- #define DIR_BIT(rflags) (((rflags) & (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;
- int i;
- #define CHECK(callreg, regstr, value)
- if (callreg != value)
- {
- printf ("%s %s got 0x%016lX want 0x%016lXn",
- header, regstr, callreg, value);
- header = "";
- ret = 0;
- }
- for (i = 0; i < 6; i++)
- {
- CHECK (calling_conventions_values[VAL+i], regname[i], calling_conventions_values[WANT+i]);
- }
- if (DIR_BIT (calling_conventions_values[RFLAGS]) != 0)
- {
- printf ("%s rflags dir bit got %d want 0n",
- header, DIR_BIT (calling_conventions_values[RFLAGS]));
- 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;
- }