Add linux headers for macos

example/map-op/Makefile

@@ -1,16 +1,22 @@
 CXX = clang
-
-CXXFLAGS = -I../../runtime/include \
-           -I../../vm/compat/include \
-		   -I../../third_party/spdlog/include \
-		   -I../../vm/vm-core/include
+CFLAGS = -nostdinc \
+         -I../../third_party/macos \
+         -I../../runtime/include \
+         -I../../vm/compat/include \
+         -I../../third_party/spdlog/include \
+         -I../../vm/vm-core/include \
+         -D__KERNEL__ \
+         -D__BPF_TRACING__ \
+         -D__TARGET_ARCH_bpf \
+         -DCONFIG_64BIT
 
 SRC = mapop.bpf.c
 TGT = main
 
 main: $(SRC)
-	$(CXX) $(SRC) -g --target=bpf -o $(TGT) $(CXXFLAGS) 
+	$(CXX) -g $(CFLAGS) -target bpf -Wall -O2 -c $(SRC) -o $(TGT)
 
 .PHONY: clean
+
 clean:
 	rm -rf $(TGT)

example/map-op/mapop.bpf.c

@@ -1,13 +1,8 @@
-#include <stdint.h>
 
-#ifdef __linux__
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
-#elif defined(__APPLE__)
-#include "bpftime_epoll.h"
-#else
-#error "Unsupported platform"
-#endif
+#include <linux/types.h>
+
 
 struct bpf_map_def {
     unsigned int type;

third_party/macos/asm/byteorder.h

@@ -0,0 +1,7 @@
+#include <libkern/OSByteOrder.h>
+
+#if defined(__LITTLE_ENDIAN__)
+#define __LITTLE_ENDIAN_BITFIELD
+#else
+#define __BIG_ENDIAN_BITFIELD
+#endif

third_party/macos/asm/errno.h

@@ -0,0 +1,3 @@
+#include <errno.h>
+
+#define	EUCLEAN		117	/* Structure needs cleaning */

third_party/macos/asm/types.h

@@ -0,0 +1,11 @@
+typedef __signed__ char __s8;
+typedef unsigned char __u8;
+
+typedef __signed__ short __s16;
+typedef unsigned short __u16;
+
+typedef __signed__ int __s32;
+typedef unsigned int __u32;
+
+__extension__ typedef __signed__ long long __s64;
+__extension__ typedef unsigned long long __u64;

third_party/macos/asm/unistd.h

@@ -0,0 +1,2 @@
+#define __NR_perf_event_open -1
+#define __NR_bpf -1

third_party/macos/byteswap.h

@@ -0,0 +1,11 @@
+#define bswap_16(value) \
+((((value) & 0xff) << 8) | ((value) >> 8))
+
+#define bswap_32(value) \
+(((uint32_t)bswap_16((uint16_t)((value) & 0xffff)) << 16) | \
+(uint32_t)bswap_16((uint16_t)((value) >> 16)))
+
+#define bswap_64(value) \
+(((uint64_t)bswap_32((uint32_t)((value) & 0xffffffff)) \
+<< 32) | \
+(uint64_t)bswap_32((uint32_t)((value) >> 32)))