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Update to FreeBSD head 2017-06-01

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Git mirror commit dfb26efac4ce9101dda240e94d9ab53f80a9e131.

Update #3472.
This commit is contained in:
Sebastian Huber
2018-08-07 12:12:37 +02:00
parent a25e6a9d18
commit de261e0404
257 changed files with 3909 additions and 2604 deletions
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16
freebsd/sys/libkern/crc32.c
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@@ -56,6 +56,10 @@ __FBSDID("$FreeBSD$");
#include <machine/specialreg.h>
#endif
#if defined(__aarch64__)
#include <machine/cpu.h>
#endif
const uint32_t crc32_tab[] = {
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
@@ -761,6 +765,18 @@ calculate_crc32c(uint32_t crc32c,
if ((cpu_feature2 & CPUID2_SSE42) != 0) {
return (sse42_crc32c(crc32c, buffer, length));
} else
#endif
#if defined(__aarch64__)
uint64_t reg;
/*
* We only test for CRC32 support on the CPU with index 0 assuming that
* this applies to all CPUs.
*/
reg = READ_SPECIALREG(id_aa64isar0_el1);
if (ID_AA64ISAR0_CRC32(reg) != ID_AA64ISAR0_CRC32_NONE) {
return (armv8_crc32c(crc32c, buffer, length));
} else
#endif
if (length < 4) {
return (singletable_crc32c(crc32c, buffer, length));