build: MSVC compatibility

Signed-off-by: Anatol Belski <ab@php.net>

ir.c

@@ -18,7 +18,12 @@
 # define _GNU_SOURCE
 #endif
 
+#ifndef _WIN32
 # include <sys/mman.h>
+#else
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+#endif
 
 #include "ir.h"
 #include "ir_private.h"
@@ -1125,7 +1130,7 @@ void ir_hashtab_init(ir_hashtab *tab, uint32_t size)
 void ir_hashtab_free(ir_hashtab *tab)
 {
 	uint32_t hash_size = (uint32_t)(-(int32_t)tab->mask);
-	char *data = tab->data - (hash_size * sizeof(uint32_t));
+	char *data = (char*)tab->data - (hash_size * sizeof(uint32_t));
 	ir_mem_free(data);
 	tab->data = NULL;
 }
@@ -1209,6 +1214,49 @@ void ir_hashtab_key_sort(ir_hashtab *tab)
 }
 
 /* Memory API */
+#ifdef _WIN32
+void *ir_mem_mmap(size_t size)
+{
+	void *ret;
+
+#ifdef _M_X64
+	DWORD size_hi = size >> 32, size_lo = size & 0xffffffff;
+#else
+	DWORD size_hi = size, size_lo = 0;
+#endif
+
+	HANDLE h = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_EXECUTE_READWRITE, size_hi, size_lo, NULL);
+
+	ret = MapViewOfFile(h, FILE_MAP_COPY | FILE_MAP_EXECUTE, size_hi, size_lo, size);
+	if (!ret) {
+		CloseHandle(h);
+	}
+
+	return ret;
+}
+
+int ir_mem_unmap(void *ptr, size_t size)
+{
+	/* XXX file handle is leaked. */
+	UnmapViewOfFile(ptr);
+	return 1;
+}
+
+int ir_mem_protect(void *ptr, size_t size)
+{
+	return 1;
+}
+
+int ir_mem_unprotect(void *ptr, size_t size)
+{
+	return 1;
+}
+
+int ir_mem_flush(void *ptr, size_t size)
+{
+	return 1;
+}
+#else
 void *ir_mem_mmap(size_t size)
 {
 	return mmap(NULL, size, PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
@@ -1242,6 +1290,7 @@ int ir_mem_flush(void *ptr, size_t size)
 #endif
 	return 1;
 }
+#endif
 
 /* Alias Analyses */
 typedef enum _ir_alias {

ir.h

@@ -16,6 +16,20 @@
 
 #define IR_VERSION "0.0.1"
 
+#ifdef _WIN32
+/* TODO Handle ARM, too. */
+# if defined(_M_X64)
+#  define __SIZEOF_SIZE_T__ 8
+# elif defined(_M_IX86)
+#  define __SIZEOF_SIZE_T__ 4
+# endif
+/* Only supported is little endian for any arch on Windows,
+   so just fake the same for all. */
+# define __ORDER_LITTLE_ENDIAN__ 1
+# define __BYTE_ORDER__ __ORDER_LITTLE_ENDIAN__
+# define __has_builtin(arg) (0)
+#endif
+
 #if defined(IR_TARGET_X86)
 # define IR_TARGET "x86"
 #elif defined(IR_TARGET_X64)
@@ -326,6 +340,11 @@ typedef int32_t ir_ref;
 #define IR_LAST_FOLDABLE_OP  IR_COPY
 
 /* IR Constant Value */
+#ifndef IR_64
+# define ADDR_MEMBER            uintptr_t                  addr;
+#else
+# define ADDR_MEMBER
+#endif
 typedef union _ir_val {
 	double                             d;
 	uint64_t                           u64;
@@ -338,9 +357,7 @@ typedef union _ir_val {
 			uint32_t                   u32;
 			int32_t                    i32;
 			float                      f;
-#ifndef IR_64
+			ADDR_MEMBER
-            uintptr_t                  addr;
-#endif
 			IR_STRUCT_LOHI(
 				union {
 					uint16_t           u16;
@@ -361,6 +378,7 @@ typedef union _ir_val {
 		uint32_t                       u32_hi
 	);
 } ir_val;
+#undef ADDR_MEMBER
 
 /* IR constant flags */
 #define IR_CONST_EMIT          (1<<0)
@@ -374,7 +392,7 @@ typedef struct _ir_insn {
 				union {
 					IR_STRUCT_LOHI(
 						uint8_t        op,
-						uint8_t        type;
+						uint8_t        type
 					);
 					uint16_t           opt;
 				},

ir_emit.c

@@ -16,7 +16,13 @@
 #endif
 
 #include "ir_private.h"
+#ifndef _WIN32
 # include <dlfcn.h>
+#else
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+# include <psapi.h>
+#endif
 
 #define DASM_M_GROW(ctx, t, p, sz, need) \
   do { \
@@ -202,10 +208,25 @@ static void *ir_resolve_sym_name(const char *name)
 	void *handle = NULL;
 	void *addr;
 
+#ifndef _WIN32
 # ifdef RTLD_DEFAULT
 	handle = RTLD_DEFAULT;
 # endif
 	addr = dlsym(handle, name);
+#else
+	HMODULE mods[256];
+	DWORD cbNeeded;
+	uint32_t i = 0;
+
+	addr = NULL;
+
+	EnumProcessModules(GetCurrentProcess(), mods, sizeof(mods), &cbNeeded);
+
+	while(!addr && i < (cbNeeded / sizeof(HMODULE))) {
+		addr = GetProcAddress(mods[i], name);
+		i++;
+	}
+#endif
 	IR_ASSERT(addr != NULL);
 	return addr;
 }

ir_gcm.c

@@ -370,7 +370,7 @@ static void ir_xlat_binding(ir_ctx *ctx, ir_ref *_xlat)
 	ir_hashtab *binding = ctx->binding;
 	uint32_t hash_size = (uint32_t)(-(int32_t)binding->mask);
 
-	memset(binding->data - (hash_size * sizeof(uint32_t)), -1, hash_size * sizeof(uint32_t));
+	memset((char*)binding->data - (hash_size * sizeof(uint32_t)), -1, hash_size * sizeof(uint32_t));
 	n1 = binding->count;
 	n2 = 0;
 	pos = 0;

ir_load.c

@@ -15,7 +15,9 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#ifndef _WIN32
 #include <unistd.h>
+#endif
 
 const unsigned char *yy_buf;
 const unsigned char *yy_end;

ir_main.c

@@ -355,7 +355,7 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
-	f = fopen(input, "r");
+	f = fopen(input, "rb");
 	if (!f) {
 		fprintf(stderr, "ERROR: Cannot open input file '%s'\n", input);
 		return 1;
@@ -420,6 +420,7 @@ int main(int argc, char **argv)
 				int (*func)(void) = entry;
 				int ret;
 
+#ifndef _WIN32
 				ir_perf_map_register("test", entry, size);
 				ir_perf_jitdump_open();
 				ir_perf_jitdump_register("test", entry, size);
@@ -427,6 +428,7 @@ int main(int argc, char **argv)
 				ir_mem_unprotect(entry, 4096);
 				ir_gdb_register("test", entry, size, sizeof(void*), 0);
 				ir_mem_protect(entry, 4096);
+#endif
 
 				ret = func();
 				fflush(stdout);

ir_private.h

@@ -17,6 +17,16 @@
 # define IR_ASSERT(x)
 #endif
 
+#ifdef _WIN32
+# include <intrin.h>
+# ifdef _M_X64
+#  pragma intrinsic(_BitScanForward64)
+#  pragma intrinsic(_BitScanReverse64)
+# endif
+# pragma intrinsic(_BitScanForward)
+# pragma intrinsic(_BitScanReverse)
+#endif
+
 #ifdef __has_builtin
 # if __has_builtin(__builtin_expect)
 #   define EXPECTED(condition)   __builtin_expect(!!(condition), 1)
@@ -104,7 +114,7 @@ IR_ALWAYS_INLINE uint32_t ir_ntz(uint32_t num)
 #elif defined(_WIN32)
 	uint32_t index;
 
-	if (!BitScanForward(&index, num)) {
+	if (!_BitScanForward(&index, num)) {
 		/* undefined behavior */
 		return 32;
 	}
@@ -133,9 +143,9 @@ IR_ALWAYS_INLINE uint32_t ir_ntzl(uint64_t num)
 	unsigned long index;
 
 #if defined(_WIN64)
-	if (!BitScanForward64(&index, num)) {
+	if (!_BitScanForward64(&index, num)) {
 #else
-	if (!BitScanForward(&index, num)) {
+	if (!_BitScanForward(&index, num)) {
 #endif
 		/* undefined behavior */
 		return 64;
@@ -165,7 +175,7 @@ IR_ALWAYS_INLINE int ir_nlz(uint32_t num)
 #elif defined(_WIN32)
 	uint32_t index;
 
-	if (!BitScanReverse(&index, num)) {
+	if (!_BitScanReverse(&index, num)) {
 		/* undefined behavior */
 		return 32;
 	}
@@ -192,7 +202,11 @@ IR_ALWAYS_INLINE int ir_nlzl(uint64_t num)
 #elif defined(_WIN32)
 	uint32_t index;
 
-	if (!BitScanReverse64(&index, num)) {
+#if defined(_WIN64)
+	if (!_BitScanReverse64(&index, num)) {
+#else
+	if (!_BitScanReverse(&index, num)) {
+#endif
 		/* undefined behavior */
 		return 64;
 	}
@@ -223,7 +237,11 @@ IR_ALWAYS_INLINE int ir_nlzl(uint64_t num)
 # define ir_bitset_ntz  ir_ntz
 #else
 # define IR_BITSET_BITS   64
+# ifdef _M_X64 /* MSVC*/
+#  define IR_BITSET_ONE    1ui64
+# else
 #  define IR_BITSET_ONE    1UL
+# endif
 # define ir_bitset_base_t uint64_t
 # define ir_bitset_ntz    ir_ntzl
 #endif

ir_ra.c

@@ -862,7 +862,11 @@ static void ir_add_phi_move(ir_ctx *ctx, uint32_t b, ir_ref from, ir_ref to)
 	}
 }
 
+#ifndef _WIN32
 static int ir_block_cmp(const void *b1, const void *b2, void *data)
+#else
+static int ir_block_cmp(void *data, const void *b1, const void *b2)
+#endif
 {
 	ir_ctx *ctx = data;
 	int d1 = ctx->cfg_blocks[*(ir_ref*)b1].loop_depth;
@@ -1047,7 +1051,12 @@ int ir_coalesce(ir_ctx *ctx)
 		}
 	}
 
-	qsort_r(blocks.l.a.refs, ir_worklist_len(&blocks), sizeof(ir_ref), ir_block_cmp, ctx);
+#ifndef _WIN32
+# define qsort_fn qsort_r
+#else
+# define qsort_fn qsort_s
+#endif
+	qsort_fn(blocks.l.a.refs, ir_worklist_len(&blocks), sizeof(ir_ref), ir_block_cmp, ctx);
 
 	while (ir_worklist_len(&blocks)) {
 		uint32_t i;

ir_strtab.c

@@ -206,7 +206,7 @@ const char *ir_strtab_str(ir_strtab *strtab, ir_ref idx)
 void ir_strtab_free(ir_strtab *strtab)
 {
 	uint32_t hash_size = (uint32_t)(-(int32_t)strtab->mask);
-	char *data = strtab->data - (hash_size * sizeof(uint32_t));
+	char *data = (char*)strtab->data - (hash_size * sizeof(uint32_t));
 	ir_mem_free(data);
 	strtab->data = NULL;
 	if (strtab->buf) {