From 8ef3e2ec14a464c0905fa54b5b83f956da11e448 Mon Sep 17 00:00:00 2001
From: XMRig <support@xmrig.com>
Date: Sun, 8 Dec 2019 10:20:23 +0700
Subject: [PATCH] Fixed build without hwloc.

---
 src/backend/cpu/platform/AdvancedCpuInfo.cpp | 46 +++++++++++++++++---
 src/backend/cpu/platform/AdvancedCpuInfo.h   |  6 ++-
 src/backend/cpu/platform/BasicCpuInfo.cpp    |  4 +-
 3 files changed, 46 insertions(+), 10 deletions(-)

diff --git a/src/backend/cpu/platform/AdvancedCpuInfo.cpp b/src/backend/cpu/platform/AdvancedCpuInfo.cpp
index 5cae55e28..37a958dbc 100644
--- a/src/backend/cpu/platform/AdvancedCpuInfo.cpp
+++ b/src/backend/cpu/platform/AdvancedCpuInfo.cpp
@@ -22,6 +22,17 @@
  *   along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "backend/cpu/platform/AdvancedCpuInfo.h"
+#include "3rdparty/libcpuid/libcpuid.h"
+
+
+#ifdef _MSC_VER
+#   include <intrin.h>
+#else
+#   include <cpuid.h>
+#endif
+
+
 #include <algorithm>
 #include <cassert>
 #include <cmath>
@@ -29,10 +40,6 @@
 #include <cstring>
 
 
-#include "3rdparty/libcpuid/libcpuid.h"
-#include "backend/cpu/platform/AdvancedCpuInfo.h"
-
-
 namespace xmrig {
 
 
@@ -54,11 +61,38 @@ static inline void cpu_brand_string(char out[64], const char *in) {
 }
 
 
+static inline void cpuid(uint32_t level, int32_t output[4])
+{
+    memset(output, 0, sizeof(int32_t) * 4);
+
+#   ifdef _MSC_VER
+    __cpuid(output, static_cast<int>(level));
+#   else
+    __cpuid_count(level, 0, output[0], output[1], output[2], output[3]);
+#   endif
+}
+
+
+static inline bool has_feature(uint32_t level, uint32_t reg, int32_t bit)
+{
+    int32_t cpu_info[4] = { 0 };
+    cpuid(level, cpu_info);
+
+    return (cpu_info[reg] & bit) != 0;
+}
+
+
+static inline bool has_pdpe1gb()
+{
+    return has_feature(0x80000001, 3, 1 << 26);
+}
+
+
 } // namespace xmrig
 
 
 xmrig::AdvancedCpuInfo::AdvancedCpuInfo() :
-    m_brand()
+    m_pdpe1gb(has_pdpe1gb())
 {
     struct cpu_raw_data_t raw = {};
     struct cpu_id_t data      = {};
@@ -74,7 +108,7 @@ xmrig::AdvancedCpuInfo::AdvancedCpuInfo() :
     m_cores    = static_cast<size_t>(data.num_cores) * m_packages;
     m_L3       = data.l3_cache > 0 ? static_cast<size_t>(data.l3_cache) * m_packages : 0;
 
-    const size_t l2 = static_cast<size_t>(data.l2_cache);
+    const auto l2 = static_cast<size_t>(data.l2_cache);
 
     // Workaround for AMD CPUs https://github.com/anrieff/libcpuid/issues/97
     if (data.vendor == VENDOR_AMD && data.ext_family >= 0x15 && data.ext_family < 0x17) {
diff --git a/src/backend/cpu/platform/AdvancedCpuInfo.h b/src/backend/cpu/platform/AdvancedCpuInfo.h
index e2909a91d..f590ccfb3 100644
--- a/src/backend/cpu/platform/AdvancedCpuInfo.h
+++ b/src/backend/cpu/platform/AdvancedCpuInfo.h
@@ -43,6 +43,7 @@ protected:
     inline Assembly::Id assembly() const override   { return m_assembly; }
     inline bool hasAES() const override             { return m_aes; }
     inline bool hasAVX2() const override            { return m_avx2; }
+    inline bool hasOneGbPages() const override      { return m_pdpe1gb; }
     inline const char *backend() const override     { return m_backend; }
     inline const char *brand() const override       { return m_brand; }
     inline size_t cores() const override            { return m_cores; }
@@ -57,8 +58,9 @@ private:
     bool m_aes            = false;
     bool m_avx2           = false;
     bool m_L2_exclusive   = false;
-    char m_backend[32];
-    char m_brand[64 + 5];
+    char m_backend[32]{};
+    char m_brand[64 + 5]{};
+    const bool m_pdpe1gb  = false;
     size_t m_cores        = 0;
     size_t m_L2           = 0;
     size_t m_L3           = 0;
diff --git a/src/backend/cpu/platform/BasicCpuInfo.cpp b/src/backend/cpu/platform/BasicCpuInfo.cpp
index e6145278c..e2ad19eac 100644
--- a/src/backend/cpu/platform/BasicCpuInfo.cpp
+++ b/src/backend/cpu/platform/BasicCpuInfo.cpp
@@ -113,7 +113,7 @@ static void cpu_brand_string(char out[64 + 6]) {
 }
 
 
-static bool has_feature(uint32_t level, uint32_t reg, int32_t bit)
+static inline bool has_feature(uint32_t level, uint32_t reg, int32_t bit)
 {
     int32_t cpu_info[4] = { 0 };
     cpuid(level, cpu_info);
@@ -191,7 +191,7 @@ const char *xmrig::BasicCpuInfo::backend() const
 }
 
 
-xmrig::CpuThreads xmrig::BasicCpuInfo::threads(const Algorithm &algorithm, uint32_t limit) const
+xmrig::CpuThreads xmrig::BasicCpuInfo::threads(const Algorithm &algorithm, uint32_t) const
 {
     const size_t count = std::thread::hardware_concurrency();