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3666a04883
This commits the result of running gdb/copyright.py as per our Start
of New Year procedure...
gdb/ChangeLog
Update copyright year range in copyright header of all GDB files.
288 lines
10 KiB
C
288 lines
10 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2017-2021 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <cpuid.h>
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#include <stdint.h>
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/* 0 if the CPU supports rdrand and non-zero otherwise. */
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static unsigned int supports_rdrand;
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/* 0 if the CPU supports rdseed and non-zero otherwise. */
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static unsigned int supports_rdseed;
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/* Check supported features and set globals accordingly. The globals
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can be used to prevent unsupported tests from running. */
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static void
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check_supported_features (void)
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{
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unsigned int rdrand_mask = (1 << 30);
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unsigned int rdseed_mask = (1 << 18);
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unsigned int eax, ebx, ecx, edx;
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unsigned int vendor;
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unsigned int max_level;
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max_level = __get_cpuid_max (0, &vendor);
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if (max_level < 1)
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return;
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__cpuid (1, eax, ebx, ecx, edx);
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supports_rdrand = ((ecx & rdrand_mask) == rdrand_mask);
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if (max_level >= 7)
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{
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__cpuid_count (7, 0, eax, ebx, ecx, edx);
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supports_rdseed = ((ebx & rdseed_mask) == rdseed_mask);
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}
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}
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/* Test rdrand support for various output registers. */
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void
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rdrand (void)
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{
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/* Get a random number from the rdrand assembly instruction. */
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register uint64_t number;
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if (!supports_rdrand)
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return;
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/* 16-bit random numbers. */
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__asm__ volatile ("rdrand %%ax;" : "=r" (number));
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__asm__ volatile ("rdrand %%bx;" : "=r" (number));
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__asm__ volatile ("rdrand %%cx;" : "=r" (number));
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__asm__ volatile ("rdrand %%dx;" : "=r" (number));
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__asm__ volatile ("mov %%di, %%ax;" : "=r" (number));
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__asm__ volatile ("rdrand %%di;" : "=r" (number));
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__asm__ volatile ("mov %%ax, %%di;" : "=r" (number));
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__asm__ volatile ("mov %%si, %%ax;" : "=r" (number));
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__asm__ volatile ("rdrand %%si;" : "=r" (number));
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__asm__ volatile ("mov %%ax, %%si;" : "=r" (number));
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__asm__ volatile ("mov %%bp, %%ax;" : "=r" (number));
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__asm__ volatile ("rdrand %%bp;" : "=r" (number));
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__asm__ volatile ("mov %%ax, %%bp;" : "=r" (number));
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__asm__ volatile ("mov %%sp, %%ax;" : "=r" (number));
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__asm__ volatile ("rdrand %%sp;" : "=r" (number));
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__asm__ volatile ("mov %%ax, %%sp;" : "=r" (number));
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#ifdef __x86_64__
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__asm__ volatile ("rdrand %%r8w;" : "=r" (number));
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__asm__ volatile ("rdrand %%r9w;" : "=r" (number));
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__asm__ volatile ("rdrand %%r10w;" : "=r" (number));
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__asm__ volatile ("rdrand %%r11w;" : "=r" (number));
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__asm__ volatile ("rdrand %%r12w;" : "=r" (number));
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__asm__ volatile ("rdrand %%r13w;" : "=r" (number));
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__asm__ volatile ("rdrand %%r14w;" : "=r" (number));
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__asm__ volatile ("rdrand %%r15w;" : "=r" (number));
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#endif
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/* 32-bit random numbers. */
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__asm__ volatile ("rdrand %%eax;" : "=r" (number));
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__asm__ volatile ("rdrand %%ebx;" : "=r" (number));
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__asm__ volatile ("rdrand %%ecx;" : "=r" (number));
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__asm__ volatile ("rdrand %%edx;" : "=r" (number));
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#ifdef __x86_64__
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__asm__ volatile ("mov %%rdi, %%rax;" : "=r" (number));
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__asm__ volatile ("rdrand %%edi;" : "=r" (number));
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__asm__ volatile ("mov %%rax, %%rdi;" : "=r" (number));
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__asm__ volatile ("mov %%rsi, %%rax;" : "=r" (number));
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__asm__ volatile ("rdrand %%esi;" : "=r" (number));
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__asm__ volatile ("mov %%rax, %%rsi;" : "=r" (number));
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__asm__ volatile ("mov %%rbp, %%rax;" : "=r" (number));
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__asm__ volatile ("rdrand %%ebp;" : "=r" (number));
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__asm__ volatile ("mov %%rax, %%rbp;" : "=r" (number));
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__asm__ volatile ("mov %%rsp, %%rax;" : "=r" (number));
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__asm__ volatile ("rdrand %%esp;" : "=r" (number));
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__asm__ volatile ("mov %%rax, %%rsp;" : "=r" (number));
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__asm__ volatile ("rdrand %%r8d;" : "=r" (number));
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__asm__ volatile ("rdrand %%r9d;" : "=r" (number));
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__asm__ volatile ("rdrand %%r10d;" : "=r" (number));
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__asm__ volatile ("rdrand %%r11d;" : "=r" (number));
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__asm__ volatile ("rdrand %%r12d;" : "=r" (number));
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__asm__ volatile ("rdrand %%r13d;" : "=r" (number));
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__asm__ volatile ("rdrand %%r14d;" : "=r" (number));
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__asm__ volatile ("rdrand %%r15d;" : "=r" (number));
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/* 64-bit random numbers. */
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__asm__ volatile ("rdrand %%rax;" : "=r" (number));
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__asm__ volatile ("rdrand %%rbx;" : "=r" (number));
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__asm__ volatile ("rdrand %%rcx;" : "=r" (number));
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__asm__ volatile ("rdrand %%rdx;" : "=r" (number));
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__asm__ volatile ("mov %%rdi, %%rax;" : "=r" (number));
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__asm__ volatile ("rdrand %%rdi;" : "=r" (number));
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__asm__ volatile ("mov %%rax, %%rdi;" : "=r" (number));
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__asm__ volatile ("mov %%rsi, %%rax;" : "=r" (number));
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__asm__ volatile ("rdrand %%rsi;" : "=r" (number));
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__asm__ volatile ("mov %%rax, %%rsi;" : "=r" (number));
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__asm__ volatile ("mov %%rbp, %%rax;" : "=r" (number));
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__asm__ volatile ("rdrand %%rbp;" : "=r" (number));
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__asm__ volatile ("mov %%rax, %%rbp;" : "=r" (number));
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__asm__ volatile ("mov %%rsp, %%rax;" : "=r" (number));
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__asm__ volatile ("rdrand %%rsp;" : "=r" (number));
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__asm__ volatile ("mov %%rax, %%rsp;" : "=r" (number));
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__asm__ volatile ("rdrand %%r8;" : "=r" (number));
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__asm__ volatile ("rdrand %%r9;" : "=r" (number));
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__asm__ volatile ("rdrand %%r10;" : "=r" (number));
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__asm__ volatile ("rdrand %%r11;" : "=r" (number));
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__asm__ volatile ("rdrand %%r12;" : "=r" (number));
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__asm__ volatile ("rdrand %%r13;" : "=r" (number));
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__asm__ volatile ("rdrand %%r14;" : "=r" (number));
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__asm__ volatile ("rdrand %%r15;" : "=r" (number));
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#endif
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}
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/* Test rdseed support for various output registers. */
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void
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rdseed (void)
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{
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/* Get a random seed from the rdseed assembly instruction. */
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register long seed;
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if (!supports_rdseed)
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return;
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/* 16-bit random seeds. */
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__asm__ volatile ("rdseed %%ax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%bx;" : "=r" (seed));
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__asm__ volatile ("rdseed %%cx;" : "=r" (seed));
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__asm__ volatile ("rdseed %%dx;" : "=r" (seed));
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__asm__ volatile ("mov %%di, %%ax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%di;" : "=r" (seed));
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__asm__ volatile ("mov %%ax, %%di;" : "=r" (seed));
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__asm__ volatile ("mov %%si, %%ax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%si;" : "=r" (seed));
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__asm__ volatile ("mov %%ax, %%si;" : "=r" (seed));
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__asm__ volatile ("mov %%bp, %%ax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%bp;" : "=r" (seed));
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__asm__ volatile ("mov %%ax, %%bp;" : "=r" (seed));
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__asm__ volatile ("mov %%sp, %%ax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%sp;" : "=r" (seed));
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__asm__ volatile ("mov %%ax, %%sp;" : "=r" (seed));
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#ifdef __x86_64__
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__asm__ volatile ("rdseed %%r8w;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r9w;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r10w;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r11w;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r12w;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r13w;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r14w;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r15w;" : "=r" (seed));
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#endif
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/* 32-bit random seeds. */
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__asm__ volatile ("rdseed %%eax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%ebx;" : "=r" (seed));
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__asm__ volatile ("rdseed %%ecx;" : "=r" (seed));
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__asm__ volatile ("rdseed %%edx;" : "=r" (seed));
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#ifdef __x86_64__
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__asm__ volatile ("mov %%rdi, %%rax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%edi;" : "=r" (seed));
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__asm__ volatile ("mov %%rax, %%rdi;" : "=r" (seed));
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__asm__ volatile ("mov %%rsi, %%rax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%esi;" : "=r" (seed));
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__asm__ volatile ("mov %%rax, %%rsi;" : "=r" (seed));
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__asm__ volatile ("mov %%rbp, %%rax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%ebp;" : "=r" (seed));
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__asm__ volatile ("mov %%rax, %%rbp;" : "=r" (seed));
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__asm__ volatile ("mov %%rsp, %%rax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%esp;" : "=r" (seed));
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__asm__ volatile ("mov %%rax, %%rsp;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r8d;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r9d;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r10d;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r11d;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r12d;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r13d;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r14d;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r15d;" : "=r" (seed));
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/* 64-bit random seeds. */
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__asm__ volatile ("rdseed %%rax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%rbx;" : "=r" (seed));
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__asm__ volatile ("rdseed %%rcx;" : "=r" (seed));
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__asm__ volatile ("rdseed %%rdx;" : "=r" (seed));
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__asm__ volatile ("mov %%rdi, %%rax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%rdi;" : "=r" (seed));
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__asm__ volatile ("mov %%rax, %%rdi;" : "=r" (seed));
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__asm__ volatile ("mov %%rsi, %%rax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%rsi;" : "=r" (seed));
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__asm__ volatile ("mov %%rax, %%rsi;" : "=r" (seed));
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__asm__ volatile ("mov %%rbp, %%rax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%rbp;" : "=r" (seed));
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__asm__ volatile ("mov %%rax, %%rbp;" : "=r" (seed));
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__asm__ volatile ("mov %%rsp, %%rax;" : "=r" (seed));
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__asm__ volatile ("rdseed %%rsp;" : "=r" (seed));
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__asm__ volatile ("mov %%rax, %%rsp;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r8;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r9;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r10;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r11;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r12;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r13;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r14;" : "=r" (seed));
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__asm__ volatile ("rdseed %%r15;" : "=r" (seed));
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#endif
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}
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/* Initialize arch-specific bits. */
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static void
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initialize (void)
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{
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/* Initialize supported features. */
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check_supported_features ();
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}
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/* Functions testing instruction decodings. GDB will test all of these. */
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static testcase_ftype testcases[] =
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{
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rdrand,
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rdseed
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};
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