// BUILD(macos):  $CC a.c -dynamiclib -arch x86_64h -o $BUILD_DIR/libHaswellCheck.dylib -install_name $RUN_DIR/libHaswellCheck.dylib
// BUILD(macos):  $CC main.c -o $BUILD_DIR/dlopen-haswell.exe -DRUN_DIR="$RUN_DIR"

// BUILD(ios,tvos,watchos,bridgeos):

// RUN:  ./dlopen-haswell.exe


#include <stdbool.h>
#include <stdio.h>
#include <dlfcn.h>
#include <mach/host_info.h>
#include <mach/mach.h>
#include <mach/mach_host.h>

#include "test_support.h"

typedef bool (*BoolFunc)(void);


bool isHaswell_dynamic()
{
    struct host_basic_info info;
    mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
    mach_port_t hostPort = mach_host_self();
    kern_return_t result = host_info(hostPort, HOST_BASIC_INFO, (host_info_t)&info, &count);
    mach_port_deallocate(mach_task_self(), hostPort);
    if ( result == KERN_SUCCESS ) {
        return (info.cpu_subtype == CPU_SUBTYPE_X86_64_H);
    }
    return false;
}


int main(int argc, const char* argv[], const char* envp[], const char* apple[]) {
    void* handle = dlopen(RUN_DIR "/libHaswellCheck.dylib", RTLD_LAZY);
    if ( handle == NULL ) {
        FAIL("dlopen(\"" RUN_DIR "/libHaswellCheck.dylib\") error: %s", dlerror());
    }

    BoolFunc libFunc = (BoolFunc)dlsym(handle, "isHaswell");
    if ( libFunc == NULL ) {
        FAIL("dlsym(\"isHaswell\") error: %s", dlerror());
    }

    // check if haswell slice of libHaswellCheck.dylib was loaded on haswell machines
    bool dylibIsHaswellSlice = (*libFunc)();
    bool runtimeIsHaswell = isHaswell_dynamic();

	if ( dylibIsHaswellSlice != runtimeIsHaswell )
        FAIL("dlopen-haswell, dylibIsHaswellSlice=%d, runtimeIsHaswell=%d", dylibIsHaswellSlice, runtimeIsHaswell);
	else
        PASS("Success");
}