add FreeBSD support

Author: cyyever

CMakeLists.txt

@@ -92,7 +92,7 @@ IF(NOT CMAKE_SYSTEM_PROCESSOR)
       "cpuinfo will compile, but cpuinfo_initialize() will always fail.")
     SET(CPUINFO_SUPPORTED_PLATFORM FALSE)
   ENDIF()
-ELSEIF(NOT CPUINFO_TARGET_PROCESSOR MATCHES "^(i[3-6]86|AMD64|x86(_64)?|armv[5-8].*|aarch64|arm64.*|ARM64.*)$")
+ELSEIF(NOT CPUINFO_TARGET_PROCESSOR MATCHES "^(i[3-6]86|AMD64|amd64|x86(_64)?|armv[5-8].*|aarch64|arm64.*|ARM64.*)$")
   MESSAGE(WARNING
     "Target processor architecture \"${CPUINFO_TARGET_PROCESSOR}\" is not supported in cpuinfo. "
     "cpuinfo will compile, but cpuinfo_initialize() will always fail.")
@@ -105,7 +105,7 @@ IF(NOT CMAKE_SYSTEM_NAME)
       "Target operating system is not specified. "
       "cpuinfo will compile, but cpuinfo_initialize() will always fail.")
   SET(CPUINFO_SUPPORTED_PLATFORM FALSE)
-ELSEIF(NOT CMAKE_SYSTEM_NAME MATCHES "^(Windows|WindowsStore|CYGWIN|MSYS|Darwin|Linux|Android)$")
+ELSEIF(NOT CMAKE_SYSTEM_NAME MATCHES "^(Windows|WindowsStore|CYGWIN|MSYS|Darwin|Linux|Android|FreeBSD)$")
   IF(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.14" AND NOT IS_APPLE_OS)
     MESSAGE(WARNING
       "Target operating system \"${CMAKE_SYSTEM_NAME}\" is not supported in cpuinfo. "
@@ -152,7 +152,7 @@ ENDIF()
 SET(CPUINFO_SRCS src/api.c src/cache.c src/init.c src/log.c)
 
 IF(CPUINFO_SUPPORTED_PLATFORM)
-  IF(NOT CMAKE_SYSTEM_NAME STREQUAL "Emscripten" AND (CPUINFO_TARGET_PROCESSOR MATCHES "^(i[3-6]86|AMD64|x86(_64)?)$" OR IOS_ARCH MATCHES "^(i386|x86_64)$"))
+  IF(NOT CMAKE_SYSTEM_NAME STREQUAL "Emscripten" AND (CPUINFO_TARGET_PROCESSOR MATCHES "^(i[3-6]86|AMD64|amd64|x86(_64)?)$" OR IOS_ARCH MATCHES "^(i386|x86_64)$"))
     LIST(APPEND CPUINFO_SRCS
       src/x86/init.c
       src/x86/info.c
@@ -172,6 +172,8 @@ IF(CPUINFO_SUPPORTED_PLATFORM)
       LIST(APPEND CPUINFO_SRCS src/x86/mach/init.c)
     ELSEIF(CMAKE_SYSTEM_NAME MATCHES "^(Windows|WindowsStore|CYGWIN|MSYS)$")
       LIST(APPEND CPUINFO_SRCS src/x86/windows/init.c)
+    ELSEIF(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
+      LIST(APPEND CPUINFO_SRCS src/x86/freebsd/init.c)
     ENDIF()
   ELSEIF(CMAKE_SYSTEM_NAME MATCHES "^Windows" AND CPUINFO_TARGET_PROCESSOR MATCHES "^(ARM64|arm64)$")
     LIST(APPEND CPUINFO_SRCS
@@ -219,9 +221,11 @@ IF(CPUINFO_SUPPORTED_PLATFORM)
       src/linux/processors.c)
   ELSEIF(IS_APPLE_OS)
     LIST(APPEND CPUINFO_SRCS src/mach/topology.c)
+  ELSEIF(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
+    LIST(APPEND CPUINFO_SRCS src/freebsd/topology.c)
   ENDIF()
 
-  IF(CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Android")
+  IF(CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Android" OR CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
     SET(CMAKE_THREAD_PREFER_PTHREAD TRUE)
     SET(THREADS_PREFER_PTHREAD_FLAG TRUE)
     FIND_PACKAGE(Threads REQUIRED)
@@ -286,6 +290,9 @@ IF(CPUINFO_SUPPORTED_PLATFORM)
     TARGET_LINK_LIBRARIES(cpuinfo_internals PUBLIC ${CMAKE_THREAD_LIBS_INIT})
     TARGET_COMPILE_DEFINITIONS(cpuinfo PRIVATE _GNU_SOURCE=1)
     TARGET_COMPILE_DEFINITIONS(cpuinfo_internals PRIVATE _GNU_SOURCE=1)
+  ELSEIF(CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
+    TARGET_LINK_LIBRARIES(cpuinfo PUBLIC ${CMAKE_THREAD_LIBS_INIT})
+    TARGET_LINK_LIBRARIES(cpuinfo_internals PUBLIC ${CMAKE_THREAD_LIBS_INIT})
   ENDIF()
 ELSE()
   TARGET_COMPILE_DEFINITIONS(cpuinfo INTERFACE CPUINFO_SUPPORTED_PLATFORM=0)
@@ -348,7 +355,7 @@ ENDIF()
 # ---[ cpuinfo mock library and mock tests
 IF(CPUINFO_SUPPORTED_PLATFORM AND CPUINFO_BUILD_MOCK_TESTS)
   SET(CPUINFO_MOCK_SRCS "${CPUINFO_SRCS}")
-  IF(CPUINFO_TARGET_PROCESSOR MATCHES "^(i[3-6]86|AMD64|x86(_64)?)$")
+  IF(CPUINFO_TARGET_PROCESSOR MATCHES "^(i[3-6]86|AMD64|amd64|x86_64)$")
     LIST(APPEND CPUINFO_MOCK_SRCS src/x86/mockcpuid.c)
   ENDIF()
   IF(CMAKE_SYSTEM_NAME STREQUAL "Linux" OR CMAKE_SYSTEM_NAME STREQUAL "Android")
@@ -792,7 +799,7 @@ IF(CPUINFO_SUPPORTED_PLATFORM AND CPUINFO_BUILD_UNIT_TESTS)
     ADD_TEST(NAME get-current-test COMMAND get-current-test)
   ENDIF()
 
-  IF(CPUINFO_TARGET_PROCESSOR MATCHES "^(i[3-6]86|AMD64|x86(_64)?)$")
+  IF(CPUINFO_TARGET_PROCESSOR MATCHES "^(i[3-6]86|AMD64|amd64|x86_64)$")
     ADD_EXECUTABLE(brand-string-test test/name/brand-string.cc)
     CPUINFO_TARGET_ENABLE_CXX11(brand-string-test)
     CPUINFO_TARGET_RUNTIME_LIBRARY(brand-string-test)
@@ -859,7 +866,7 @@ IF(CPUINFO_SUPPORTED_PLATFORM AND CPUINFO_BUILD_TOOLS)
     CPUINFO_TARGET_RUNTIME_LIBRARY(cpuinfo-dump)
   ENDIF()
 
-  IF(CPUINFO_TARGET_PROCESSOR MATCHES "^(i[3-6]86|AMD64|x86(_64)?)$")
+  IF(CPUINFO_TARGET_PROCESSOR MATCHES "^(i[3-6]86|AMD64|amd64|x86_64)$")
     ADD_EXECUTABLE(cpuid-dump tools/cpuid-dump.c)
     CPUINFO_TARGET_ENABLE_C99(cpuid-dump)
     CPUINFO_TARGET_RUNTIME_LIBRARY(cpuid-dump)

src/cpuinfo/internal-api.h

@@ -50,6 +50,7 @@ extern CPUINFO_INTERNAL uint32_t cpuinfo_max_cache_size;
 
 CPUINFO_PRIVATE void cpuinfo_x86_mach_init(void);
 CPUINFO_PRIVATE void cpuinfo_x86_linux_init(void);
+CPUINFO_PRIVATE void cpuinfo_x86_freebsd_init(void);
 #if defined(_WIN32) || defined(__CYGWIN__)
 	#if CPUINFO_ARCH_ARM64
 		CPUINFO_PRIVATE BOOL CALLBACK cpuinfo_arm_windows_init(PINIT_ONCE init_once, PVOID parameter, PVOID* context);

src/freebsd/api.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <stdint.h>
+
+
+struct cpuinfo_freebsd_topology {
+	uint32_t packages;
+	uint32_t cores;
+	uint32_t threads;
+};
+
+
+struct cpuinfo_freebsd_topology cpuinfo_freebsd_detect_topology(void);

src/freebsd/topology.c

@@ -0,0 +1,33 @@
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#include <sys/types.h>
+#include <sys/sysctl.h>
+
+#include <cpuinfo/log.h>
+#include <freebsd/api.h>
+
+
+
+struct cpuinfo_freebsd_topology cpuinfo_freebsd_detect_topology(void) {
+	int threads = 1;
+	size_t sizeof_threads = sizeof(threads);
+	if (sysctlbyname("hw.ncpu", &threads, &sizeof_threads, NULL, 0) != 0) {
+		cpuinfo_log_error("sysctlbyname(\"hw.ncpu\") failed: %s", strerror(errno));
+	} else if (threads <= 0) {
+		cpuinfo_log_error("sysctlbyname(\"hw.ncpu\") returned invalid value %d", threads);
+	}
+
+    int cores = threads / 2;
+	int packages = 1;
+
+	cpuinfo_log_debug("freebsd topology: packages = %d, cores = %d, threads = %d", packages, (int) cores, (int) threads);
+	struct cpuinfo_freebsd_topology topology = {
+		.packages = (uint32_t) packages,
+		.cores = (uint32_t) cores,
+		.threads = (uint32_t) threads
+	};
+
+	return topology;
+}

src/init.c

@@ -25,6 +25,8 @@ bool CPUINFO_ABI cpuinfo_initialize(void) {
 #if CPUINFO_ARCH_X86 || CPUINFO_ARCH_X86_64
 	#if defined(__MACH__) && defined(__APPLE__)
 		pthread_once(&init_guard, &cpuinfo_x86_mach_init);
+	#elif defined(__FreeBSD__)
+		pthread_once(&init_guard, &cpuinfo_x86_freebsd_init);
 	#elif defined(__linux__)
 		pthread_once(&init_guard, &cpuinfo_x86_linux_init);
 	#elif defined(_WIN32) || defined(__CYGWIN__)