projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 60650f2e WT |
1 | /* Test program for MPX registers. |
| 2 | ||
| 3 | Copyright 2013 Free Software Foundation, Inc. | |
| 4 | ||
| 5 | This file is part of GDB. | |
| 6 | ||
| 7 | This program is free software; you can redistribute it and/or modify | |
| 8 | it under the terms of the GNU General Public License as published by | |
| 9 | the Free Software Foundation; either version 3 of the License, or | |
| 10 | (at your option) any later version. | |
| 11 | ||
| 12 | This program is distributed in the hope that it will be useful, | |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | GNU General Public License for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License | |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 19 | ||
| 20 | #include <stdio.h> | |
| 21 | #include "i386-cpuid.h" | |
| 22 | ||
| 23 | #ifndef NOINLINE | |
| 24 | #define NOINLINE __attribute__ ((noinline)) | |
| 25 | #endif | |
| 26 | ||
| 27 | unsigned int have_mpx (void) NOINLINE; | |
| 28 | ||
| 29 | unsigned int NOINLINE | |
| 30 | have_mpx (void) | |
| 31 | { | |
| 32 | unsigned int eax, ebx, ecx, edx; | |
| 33 | ||
| 34 | if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx)) | |
| 35 | return 0; | |
| 36 | ||
| 37 | if ((ecx & bit_OSXSAVE) == bit_OSXSAVE) | |
| 38 | { | |
| 39 | if (__get_cpuid_max (0, NULL) < 7) | |
| 40 | return 0; | |
| 41 | ||
| 42 | __cpuid_count (7, 0, eax, ebx, ecx, edx); | |
| 43 | ||
| 44 | if ((ebx & bit_MPX) == bit_MPX) | |
| 45 | return 1; | |
| 46 | else | |
| 47 | return 0; | |
| 48 | } | |
| 49 | } | |
| 50 | ||
| 51 | int | |
| 52 | main (int argc, char **argv) | |
| 53 | { | |
| 54 | if (have_mpx ()) | |
| 55 | { | |
| 56 | #ifdef __x86_64__ | |
| 57 | asm ("mov $10, %rax\n\t" | |
| 58 | "mov $9, %rdx\n\t" | |
| 59 | "bndmk (%rax,%rdx), %bnd0\n\t" | |
| 60 | "mov $20, %rax\n\t" | |
| 61 | "mov $9, %rdx\n\t" | |
| 62 | "bndmk (%rax,%rdx), %bnd1\n\t" | |
| 63 | "mov $30, %rax\n\t" | |
| 64 | "mov $9, %rdx\n\t" | |
| 65 | "bndmk (%rax,%rdx), %bnd2\n\t" | |
| 66 | "mov $40, %rax\n\t" | |
| 67 | "mov $9, %rdx\n\t" | |
| 68 | "bndmk (%rax,%rdx), %bnd3\n\t" | |
| 69 | "bndstx %bnd3, (%rax) \n\t" | |
| 70 | "nop\n\t" | |
| 71 | ); | |
| 72 | #else | |
| 73 | asm ("mov $10, %eax\n\t" | |
| 74 | "mov $9, %edx\n\t" | |
| 75 | "bndmk (%eax,%edx), %bnd0\n\t" | |
| 76 | "mov $20, %eax\n\t" | |
| 77 | "mov $9, %edx\n\t" | |
| 78 | "bndmk (%eax,%edx), %bnd1\n\t" | |
| 79 | "mov $30, %eax\n\t" | |
| 80 | "mov $9, %edx\n\t" | |
| 81 | "bndmk (%eax,%edx), %bnd2\n\t" | |
| 82 | "mov $40, %eax\n\t" | |
| 83 | "mov $9, %edx\n\t" | |
| 84 | "bndmk (%eax,%edx), %bnd3\n\t" | |
| 85 | "bndstx %bnd3, (%eax)\n\t" | |
| 86 | "nop\n\t" | |
| 87 | ); | |
| 88 | #endif | |
| 89 | asm ("nop\n\t"); /* break here. */ | |
| 90 | } | |
| 91 | return 0; | |
| 92 | } |