Fixed bug #76825 (Undefined symbols ___cpuid_count)

Author: laruence

Diff for: NEWS

@@ -3,6 +3,7 @@ PHP                                                                        NEWS
 ?? ??? ????, PHP 7.3.0RC1
 
 - Core:
+  . Fixed bug #76825 (Undefined symbols ___cpuid_count). (Laruence)
   . Fixed bug #76820 (Z_COPYABLE invalid definition). (mvdwerve, cmb)
 
 - intl:

Diff for: Zend/Zend.m4

@@ -58,6 +58,7 @@ sys/time.h \
 signal.h \
 unix.h \
 stdlib.h \
+cpuid.h \
 dlfcn.h)
 
 AC_TYPE_SIZE_T

Diff for: Zend/zend_cpuinfo.c

@@ -29,10 +29,20 @@ typedef struct _zend_cpu_info {
 static zend_cpu_info cpuinfo = {0};
 
 #if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
-#include <cpuid.h>
+# ifdef HAVE_CPUID_H
+# include <cpuid.h>
 static void __zend_cpuid(uint32_t func, uint32_t subfunc, zend_cpu_info *cpuinfo) {
 	__cpuid_count(func, subfunc, cpuinfo->eax, cpuinfo->ebx, cpuinfo->ecx, cpuinfo->edx);
 }
+# else
+static void __zend_cpuid(uint32_t func, uint32_t subfunc, zend_cpu_info *cpuinfo) {
+	__asm__ __volatile__ (
+		"cpuid"
+		: "=a"(cpuinfo->eax), "=b"(cpuinfo->ebx), "=c"(cpuinfo->ecx), "=d"(cpuinfo->edx)
+		: "a"(func), "c"(subfunc)
+	);
+}
+# endif
 #elif defined(ZEND_WIN32) && !defined(__clang__)
 # include <intrin.h>
 static void __zend_cpuid(uint32_t func, uint32_t subfunc, zend_cpu_info *cpuinfo) {