forked from Imagelibrary/binutils-gdb
d01e823438
This updates the copyright headers to include 2025. I did this by running gdb/copyright.py and then manually modifying a few files as noted by the script. Approved-By: Eli Zaretskii <eliz@gnu.org>
299 lines
8.7 KiB
C
299 lines
8.7 KiB
C
/* This testcase is part of GDB, the GNU debugger.
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Copyright 2017-2025 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;": : : "%ax");
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__asm__ volatile ("rdrand %%bx;": : : "%bx");
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__asm__ volatile ("rdrand %%cx;": : : "%cx");
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__asm__ volatile ("rdrand %%dx;": : : "%dx");
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__asm__ volatile ("mov %%di, %%ax;\n\
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rdrand %%di;\n\
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mov %%ax, %%di;" : : : "%ax");
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__asm__ volatile ("mov %%si, %%ax;\n\
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rdrand %%si;\n\
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mov %%ax, %%si;" : : : "%ax");
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__asm__ volatile ("mov %%bp, %%ax;\n\
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rdrand %%bp;\n\
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mov %%ax, %%bp;" : : : "%ax");
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__asm__ volatile ("mov %%sp, %%ax;\n\
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rdrand %%sp;\n\
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mov %%ax, %%sp;" : : : "%ax");
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#ifdef __x86_64__
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__asm__ volatile ("rdrand %%r8w;": : : "%r8");
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__asm__ volatile ("rdrand %%r9w;": : : "%r9");
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__asm__ volatile ("rdrand %%r10w;": : : "%r10");
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__asm__ volatile ("rdrand %%r11w;": : : "%r11");
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__asm__ volatile ("rdrand %%r12w;": : : "%r12");
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__asm__ volatile ("rdrand %%r13w;": : : "%r13");
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__asm__ volatile ("rdrand %%r14w;": : : "%r14");
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__asm__ volatile ("rdrand %%r15w;": : : "%r15");
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#endif
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/* 32-bit random numbers. */
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__asm__ volatile ("rdrand %%eax;": : : "%eax");
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__asm__ volatile ("rdrand %%ebx;": : : "%ebx");
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__asm__ volatile ("rdrand %%ecx;": : : "%ecx");
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__asm__ volatile ("rdrand %%edx;": : : "%edx");
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#ifdef __x86_64__
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__asm__ volatile ("mov %%rdi, %%rax;\n\
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rdrand %%edi;\n\
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mov %%rax, %%rdi;" : : : "%rax");
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__asm__ volatile ("mov %%rsi, %%rax;\n\
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rdrand %%esi;\n\
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mov %%rax, %%rsi;" : : : "%rax");
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__asm__ volatile ("mov %%rbp, %%rax;\n\
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rdrand %%ebp;\n\
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mov %%rax, %%rbp;" : : : "%rax");
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__asm__ volatile ("mov %%rsp, %%rax;\n\
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rdrand %%esp;\n\
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mov %%rax, %%rsp;" : : : "%rax");
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__asm__ volatile ("rdrand %%r8d;": : : "%r8");
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__asm__ volatile ("rdrand %%r9d;": : : "%r9");
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__asm__ volatile ("rdrand %%r10d;": : : "%r10");
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__asm__ volatile ("rdrand %%r11d;": : : "%r11");
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__asm__ volatile ("rdrand %%r12d;": : : "%r12");
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__asm__ volatile ("rdrand %%r13d;": : : "%r13");
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__asm__ volatile ("rdrand %%r14d;": : : "%r14");
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__asm__ volatile ("rdrand %%r15d;": : : "%r15");
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/* 64-bit random numbers. */
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__asm__ volatile ("rdrand %%rax;": : : "%rax");
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__asm__ volatile ("rdrand %%rbx;": : : "%rbx");
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__asm__ volatile ("rdrand %%rcx;": : : "%rcx");
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__asm__ volatile ("rdrand %%rdx;": : : "%rdx");
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__asm__ volatile ("mov %%rdi, %%rax;\n\
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rdrand %%rdi;\n\
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mov %%rax, %%rdi;" : : : "%rax");
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__asm__ volatile ("mov %%rsi, %%rax;\n\
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rdrand %%rsi;\n\
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mov %%rax, %%rsi;" : : : "%rax");
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__asm__ volatile ("mov %%rbp, %%rax;\n\
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rdrand %%rbp;\n\
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mov %%rax, %%rbp;" : : : "%rax");
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__asm__ volatile ("mov %%rsp, %%rax;\n\
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rdrand %%rsp;\n\
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mov %%rax, %%rsp;" : : : "%rax");
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__asm__ volatile ("rdrand %%r8;": : : "%r8");
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__asm__ volatile ("rdrand %%r9;": : : "%r9");
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__asm__ volatile ("rdrand %%r10;": : : "%r10");
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__asm__ volatile ("rdrand %%r11;": : : "%r11");
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__asm__ volatile ("rdrand %%r12;": : : "%r12");
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__asm__ volatile ("rdrand %%r13;": : : "%r13");
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__asm__ volatile ("rdrand %%r14;": : : "%r14");
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__asm__ volatile ("rdrand %%r15;": : : "%r15");
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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;": : : "%ax");
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__asm__ volatile ("rdseed %%bx;": : : "%bx");
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__asm__ volatile ("rdseed %%cx;": : : "%cx");
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__asm__ volatile ("rdseed %%dx;": : : "%dx");
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__asm__ volatile ("mov %%di, %%ax;\n\
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rdseed %%di;\n\
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mov %%ax, %%di;" : : : "%ax");
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__asm__ volatile ("mov %%si, %%ax;\n\
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rdseed %%si;\n\
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mov %%ax, %%si;" : : : "%ax");
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__asm__ volatile ("mov %%bp, %%ax;\n\
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rdseed %%bp;\n\
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mov %%ax, %%bp;" : : : "%ax");
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__asm__ volatile ("mov %%sp, %%ax;\n\
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rdseed %%sp;\n\
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mov %%ax, %%sp;" : : : "%ax");
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#ifdef __x86_64__
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__asm__ volatile ("rdseed %%r8w;": : : "%r8");
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__asm__ volatile ("rdseed %%r9w;": : : "%r9");
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__asm__ volatile ("rdseed %%r10w;": : : "%r10");
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__asm__ volatile ("rdseed %%r11w;": : : "%r11");
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__asm__ volatile ("rdseed %%r12w;": : : "%r12");
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__asm__ volatile ("rdseed %%r13w;": : : "%r13");
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__asm__ volatile ("rdseed %%r14w;": : : "%r14");
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__asm__ volatile ("rdseed %%r15w;": : : "%r15");
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#endif
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/* 32-bit random seeds. */
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__asm__ volatile ("rdseed %%eax;": : : "%eax");
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__asm__ volatile ("rdseed %%ebx;": : : "%ebx");
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__asm__ volatile ("rdseed %%ecx;": : : "%ecx");
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__asm__ volatile ("rdseed %%edx;": : : "%edx");
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#ifdef __x86_64__
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__asm__ volatile ("mov %%rdi, %%rax;\n\
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rdseed %%edi;\n\
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mov %%rax, %%rdi;" : : : "%rax");
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__asm__ volatile ("mov %%rsi, %%rax;\n\
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rdseed %%esi;\n\
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mov %%rax, %%rsi;" : : : "%rax");
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__asm__ volatile ("mov %%rbp, %%rax;\n\
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rdseed %%ebp;\n\
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mov %%rax, %%rbp;" : : : "%rax");
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__asm__ volatile ("mov %%rsp, %%rax;\n\
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rdseed %%esp;\n\
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mov %%rax, %%rsp;" : : : "%rax");
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__asm__ volatile ("rdseed %%r8d;": : : "%r8");
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__asm__ volatile ("rdseed %%r9d;": : : "%r9");
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__asm__ volatile ("rdseed %%r10d;": : : "%r10");
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__asm__ volatile ("rdseed %%r11d;": : : "%r11");
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__asm__ volatile ("rdseed %%r12d;": : : "%r12");
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__asm__ volatile ("rdseed %%r13d;": : : "%r13");
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__asm__ volatile ("rdseed %%r14d;": : : "%r14");
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__asm__ volatile ("rdseed %%r15d;": : : "%r15");
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/* 64-bit random seeds. */
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__asm__ volatile ("rdseed %%rax;": : : "%rax");
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__asm__ volatile ("rdseed %%rbx;": : : "%rbx");
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__asm__ volatile ("rdseed %%rcx;": : : "%rcx");
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__asm__ volatile ("rdseed %%rdx;": : : "%rdx");
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__asm__ volatile ("mov %%rdi, %%rax;\n\
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rdseed %%rdi;\n\
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mov %%rax, %%rdi;" : : : "%rax");
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__asm__ volatile ("mov %%rsi, %%rax;\n\
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rdseed %%rsi;\n\
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mov %%rax, %%rsi;" : : : "%rax");
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__asm__ volatile ("mov %%rbp, %%rax;\n\
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rdseed %%rbp;\n\
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mov %%rax, %%rbp;" : : : "%rax");
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__asm__ volatile ("mov %%rsp, %%rax;\n\
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rdseed %%rsp;\n\
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mov %%rax, %%rsp;" : : : "%rax");
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__asm__ volatile ("rdseed %%r8;": : : "%r8");
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__asm__ volatile ("rdseed %%r9;": : : "%r9");
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__asm__ volatile ("rdseed %%r10;": : : "%r10");
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__asm__ volatile ("rdseed %%r11;": : : "%r11");
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__asm__ volatile ("rdseed %%r12;": : : "%r12");
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__asm__ volatile ("rdseed %%r13;": : : "%r13");
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__asm__ volatile ("rdseed %%r14;": : : "%r14");
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__asm__ volatile ("rdseed %%r15;": : : "%r15");
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#endif
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}
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/* Test rdtscp support. */
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void
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rdtscp (void)
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{
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#ifdef __x86_64__
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__asm__ volatile ("rdtscp");
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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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rdtscp
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};
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