mirror of
https://github.com/checkpoint-restore/criu.git
synced 2026-08-04 15:53:44 +00:00
93dd984ca0
Acked-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Adrian Reber <areber@redhat.com>
86 lines
1.3 KiB
C
86 lines
1.3 KiB
C
#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include "zdtmtst.h"
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#if defined(__i386__) || defined(__x86_64__)
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#include "cpuid.h"
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const char *test_doc = "Test preserve of mxcsr in FPU";
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const char *test_author = "Dmitry Safonov <0x7f454c46@gmail.com>";
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static int verify_cpu(void)
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{
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unsigned int eax, ebx, ecx, edx;
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/* Do we have xsave? */
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cpuid(1, &eax, &ebx, &ecx, &edx);
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if (!(ecx & (1u << 27)))
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return -1;
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/* Is YMM here? */
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cpuid_count(0xd, 0, &eax, &ebx, &ecx, &edx);
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if ((eax & (0x4)) != 0x4)
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return -1;
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return 0;
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}
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#define __aligned __attribute__((aligned(64)))
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static int fpu_test(void)
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{
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uint32_t before, after;
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asm volatile("stmxcsr %0\n" : "+m"(before));
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test_daemon();
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test_waitsig();
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asm volatile("stmxcsr %0\n" : "+m"(after));
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test_msg("before: %x, after: %x\n", before, after);
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return (before != after);
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}
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static int bare_run(void)
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{
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test_msg("Your cpu doesn't support ymm registers, skipping\n");
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test_daemon();
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test_waitsig();
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return 0;
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}
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int main(int argc, char *argv[])
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{
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int ret = 0;
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test_init(argc, argv);
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ret = verify_cpu() ? bare_run() : fpu_test();
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if (!ret)
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pass();
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else
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fail();
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return 0;
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}
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#else
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int main(int argc, char *argv[])
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{
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test_init(argc, argv);
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skip("Unsupported arch");
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return 0;
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}
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#endif
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