mirror of
https://github.com/google/cpu_features.git
synced 2025-04-28 07:23:37 +02:00
981fbe3914
* support for s390x * added z15 T01, T02 model checking * removed z15 checking * removed empty strings * added s390x unit tests * added reference url for hwcaps * moved documentation to S390XFeatures struct, updated copyright date, removed unused include statement * changed num_processors to int * removed newlines from test inputs * scripts: Add bootlin s390x support * cmake(ci): Add s390x support * ci: Add s390x workflow Co-authored-by: Marcos <marcos.araque.fiallos@ibm.com> Co-authored-by: Corentin Le Molgat <corentinl@google.com>
121 lines
5.0 KiB
C
121 lines
5.0 KiB
C
// Copyright 2022 IBM.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "cpu_features_macros.h"
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#ifdef CPU_FEATURES_ARCH_S390X
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#ifdef CPU_FEATURES_OS_LINUX
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#include "cpuinfo_s390x.h"
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////////////////////////////////////////////////////////////////////////////////
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// Definitions for introspection.
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////////////////////////////////////////////////////////////////////////////////
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#define INTROSPECTION_TABLE \
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LINE(S390_ESAN3, esan3, "esan3", HWCAP_S390_ESAN3, 0) \
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LINE(S390_ZARCH, zarch, "zarch", HWCAP_S390_ZARCH, 0) \
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LINE(S390_STFLE, stfle, "stfle", HWCAP_S390_STFLE, 0) \
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LINE(S390_MSA, msa, "msa", HWCAP_S390_MSA, 0) \
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LINE(S390_LDISP, ldisp, "ldisp", HWCAP_S390_LDISP, 0) \
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LINE(S390_EIMM, eimm, "eimm", HWCAP_S390_EIMM, 0) \
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LINE(S390_DFP, dfp, "dfp", HWCAP_S390_DFP, 0) \
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LINE(S390_EDAT, edat, "edat", HWCAP_S390_HPAGE, 0) \
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LINE(S390_ETF3EH, etf3eh, "etf3eh", HWCAP_S390_ETF3EH, 0) \
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LINE(S390_HIGHGPRS, highgprs, "highgprs", HWCAP_S390_HIGH_GPRS, 0) \
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LINE(S390_TE, te, "te", HWCAP_S390_TE, 0) \
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LINE(S390_VX, vx, "vx", HWCAP_S390_VXRS, 0) \
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LINE(S390_VXD, vxd, "vxd", HWCAP_S390_VXRS_BCD, 0) \
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LINE(S390_VXE, vxe, "vxe", HWCAP_S390_VXRS_EXT, 0) \
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LINE(S390_GS, gs, "gs", HWCAP_S390_GS, 0) \
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LINE(S390_VXE2, vxe2, "vxe2", HWCAP_S390_VXRS_EXT2, 0) \
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LINE(S390_VXP, vxp, "vxp", HWCAP_S390_VXRS_PDE, 0) \
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LINE(S390_SORT, sort, "sort", HWCAP_S390_SORT, 0) \
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LINE(S390_DFLT, dflt, "dflt", HWCAP_S390_DFLT, 0) \
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LINE(S390_VXP2, vxp2, "vxp2", HWCAP_S390_VXRS_PDE2, 0) \
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LINE(S390_NNPA, nnpa, "nnpa", HWCAP_S390_NNPA, 0) \
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LINE(S390_PCIMIO, pcimio, "pcimio", HWCAP_S390_PCI_MIO, 0) \
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LINE(S390_SIE, sie, "sie", HWCAP_S390_SIE, 0)
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#define INTROSPECTION_PREFIX S390X
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#define INTROSPECTION_ENUM_PREFIX S390X
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#include "define_introspection_and_hwcaps.inl"
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////////////////////////////////////////////////////////////////////////////////
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// Implementation.
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////////////////////////////////////////////////////////////////////////////////
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#include <stdbool.h>
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#include "internal/bit_utils.h"
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#include "internal/filesystem.h"
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#include "internal/hwcaps.h"
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#include "internal/stack_line_reader.h"
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#include "internal/string_view.h"
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static bool HandleS390XLine(const LineResult result,
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S390XPlatformStrings* const strings) {
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StringView line = result.line;
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StringView key, value;
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if (CpuFeatures_StringView_GetAttributeKeyValue(line, &key, &value)) {
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if (CpuFeatures_StringView_IsEquals(key, str("# processors"))) {
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strings->num_processors = CpuFeatures_StringView_ParsePositiveNumber(value);
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}
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}
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return !result.eof;
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}
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static void FillProcCpuInfoData(S390XPlatformStrings* const strings) {
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const int fd = CpuFeatures_OpenFile("/proc/cpuinfo");
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if (fd >= 0) {
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StackLineReader reader;
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StackLineReader_Initialize(&reader, fd);
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for (;;) {
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if (!HandleS390XLine(StackLineReader_NextLine(&reader), strings)) {
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break;
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}
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}
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CpuFeatures_CloseFile(fd);
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}
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}
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static const S390XInfo kEmptyS390XInfo;
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S390XInfo GetS390XInfo(void) {
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S390XInfo info = kEmptyS390XInfo;
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const HardwareCapabilities hwcaps = CpuFeatures_GetHardwareCapabilities();
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for (size_t i = 0; i < S390X_LAST_; ++i) {
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if (CpuFeatures_IsHwCapsSet(kHardwareCapabilities[i], hwcaps)) {
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kSetters[i](&info.features, true);
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}
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}
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return info;
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}
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static const S390XPlatformStrings kEmptyS390XPlatformStrings;
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S390XPlatformStrings GetS390XPlatformStrings(void) {
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S390XPlatformStrings strings = kEmptyS390XPlatformStrings;
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const char* platform = CpuFeatures_GetPlatformPointer();
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FillProcCpuInfoData(&strings);
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if (platform != NULL)
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CpuFeatures_StringView_CopyString(str(platform), strings.type.platform,
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sizeof(strings.type.platform));
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return strings;
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}
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#endif // CPU_FEATURES_OS_LINUX
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#endif // CPU_FEATURES_ARCH_S390X
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