diff --git a/libtcc.c b/libtcc.c
index 8a6fa0c..bfa6839 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -191,7 +191,7 @@ static int put_elf_str(Section *s, const char *sym);
 static int put_elf_sym(Section *s, 
                        unsigned long value, unsigned long size,
                        int info, int other, int shndx, const char *name);
-static int add_elf_sym(Section *s, unsigned long value, unsigned long size,
+static int add_elf_sym(Section *s, uplong value, unsigned long size,
                        int info, int other, int sh_num, const char *name);
 static void put_elf_reloc(Section *symtab, Section *s, unsigned long offset,
                           int type, int symbol);
@@ -1183,7 +1183,7 @@ BufferedFile *tcc_open(TCCState *s1, const char *filename)
         fd = open(filename, O_RDONLY | O_BINARY);
     if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3)
         printf("%s %*s%s\n", fd < 0 ? "nf":"->",
-               (s1->include_stack_ptr - s1->include_stack), "", filename);
+               (int)(s1->include_stack_ptr - s1->include_stack), "", filename);
     if (fd < 0)
         return NULL;
     bf = tcc_malloc(sizeof(BufferedFile));
@@ -1656,7 +1656,8 @@ static void sig_error(int signum, siginfo_t *siginf, void *puc)
 int tcc_relocate(TCCState *s1, void *ptr)
 {
     Section *s;
-    unsigned long offset, length, mem;
+    unsigned long offset, length;
+    uplong mem;
     int i;
 
     if (0 == s1->runtime_added) {
@@ -1674,7 +1675,7 @@ int tcc_relocate(TCCState *s1, void *ptr)
             return -1;
     }
 
-    offset = 0, mem = (unsigned long)ptr;
+    offset = 0, mem = (uplong)ptr;
     for(i = 1; i < s1->nb_sections; i++) {
         s = s1->sections[i];
         if (0 == (s->sh_flags & SHF_ALLOC))
@@ -1715,7 +1716,7 @@ int tcc_relocate(TCCState *s1, void *ptr)
             continue;
         length = s->data_offset;
         // printf("%-12s %08x %04x\n", s->name, s->sh_addr, length);
-        ptr = (void*)s->sh_addr;
+        ptr = (void*)(uplong)s->sh_addr;
         if (NULL == s->data || s->sh_type == SHT_NOBITS)
             memset(ptr, 0, length);
         else
@@ -2155,7 +2156,7 @@ int tcc_add_library(TCCState *s, const char *libraryname)
 
 int tcc_add_symbol(TCCState *s, const char *name, void *val)
 {
-    add_elf_sym(symtab_section, (unsigned long)val, 0, 
+    add_elf_sym(symtab_section, (uplong)val, 0,
                 ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
                 SHN_ABS, name);
     return 0;
diff --git a/tcc.h b/tcc.h
index ab95f8d..74761f0 100644
--- a/tcc.h
+++ b/tcc.h
@@ -47,6 +47,9 @@
 #define inline __inline
 #define inp next_inp
 #define dlclose FreeLibrary
+#ifdef _WIN64
+#define uplong unsigned long long
+#endif
 #endif
 
 #ifndef _WIN32
@@ -58,6 +61,10 @@
 
 #endif /* !CONFIG_TCCBOOT */
 
+#ifndef uplong
+#define uplong unsigned long
+#endif
+
 #ifndef PAGESIZE
 #define PAGESIZE 4096
 #endif
@@ -204,7 +211,10 @@ typedef struct Sym {
         int *d;   /* define token stream */
     };
     CType type;    /* associated type */
-    struct Sym *next; /* next related symbol */
+    union {
+        struct Sym *next; /* next related symbol */
+        long jnext; /* next jump label */
+    };
     struct Sym *prev; /* prev symbol in stack */
     struct Sym *prev_tok; /* previous symbol for this token */
 } Sym;
diff --git a/tccelf.c b/tccelf.c
index 5981d68..69f94c4 100644
--- a/tccelf.c
+++ b/tccelf.c
@@ -177,7 +177,7 @@ void *tcc_get_symbol(TCCState *s, const char *name)
     if (!sym_index)
         return NULL;
     sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
-    return (void*)(long)sym->st_value;
+    return (void*)(uplong)sym->st_value;
 }
 
 void *tcc_get_symbol_err(TCCState *s, const char *name)
@@ -191,7 +191,7 @@ void *tcc_get_symbol_err(TCCState *s, const char *name)
 
 /* add an elf symbol : check if it is already defined and patch
    it. Return symbol index. NOTE that sh_num can be SHN_UNDEF. */
-static int add_elf_sym(Section *s, unsigned long value, unsigned long size,
+static int add_elf_sym(Section *s, uplong value, unsigned long size,
                        int info, int other, int sh_num, const char *name)
 {
     ElfW(Sym) *esym;
@@ -442,11 +442,11 @@ static void relocate_syms(TCCState *s1, int do_resolve)
             name = strtab_section->data + sym->st_name;
             if (do_resolve) {
 #ifndef _WIN32
-                unsigned long addr;
+                void *addr;
                 name = symtab_section->link->data + sym->st_name;
-                addr = (unsigned long)resolve_sym(s1, name);
+                addr = resolve_sym(s1, name);
                 if (addr) {
-                    sym->st_value = addr;
+                    sym->st_value = (uplong)addr;
                     goto found;
                 }
 #endif
@@ -1884,7 +1884,7 @@ int elf_output_file(TCCState *s1, const char *filename)
 
         /* get entry point address */
         if (file_type == TCC_OUTPUT_EXE)
-            ehdr.e_entry = (unsigned long)tcc_get_symbol_err(s1, "_start");
+            ehdr.e_entry = (uplong)tcc_get_symbol_err(s1, "_start");
         else
             ehdr.e_entry = text_section->sh_addr; /* XXX: is it correct ? */
     }
diff --git a/tccgen.c b/tccgen.c
index c59613b..0ff7ac3 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -4088,9 +4088,9 @@ static void block(int *bsym, int *csym, int *case_sym, int *def_sym,
             }
             /* label already defined */
             if (s->r & LABEL_FORWARD) 
-                s->next = (void *)gjmp((long)s->next);
+                s->jnext = gjmp(s->jnext);
             else
-                gjmp_addr((long)s->next);
+                gjmp_addr(s->jnext);
             next();
         } else {
             expect("label identifier");
@@ -4106,12 +4106,12 @@ static void block(int *bsym, int *csym, int *case_sym, int *def_sym,
             if (s) {
                 if (s->r == LABEL_DEFINED)
                     error("duplicate label '%s'", get_tok_str(s->v, NULL));
-                gsym((long)s->next);
+                gsym(s->jnext);
                 s->r = LABEL_DEFINED;
             } else {
                 s = label_push(&global_label_stack, b, LABEL_DEFINED);
             }
-            s->next = (void *)ind;
+            s->jnext = ind;
             /* we accept this, but it is a mistake */
         block_after_label:
             if (tok == '}') {
diff --git a/tccpe.c b/tccpe.c
index 55b23b0..ac3688f 100644
--- a/tccpe.c
+++ b/tccpe.c
@@ -1548,7 +1548,7 @@ ST_FN void pe_add_runtime_ex(TCCState *s1, struct pe_info *pe)
     }
 
     if (start_symbol) {
-        addr = (ADDR3264)tcc_get_symbol_err(s1, start_symbol);
+        addr = (uplong)tcc_get_symbol_err(s1, start_symbol);
         if (s1->output_type == TCC_OUTPUT_MEMORY && addr)
             /* for -run GUI's, put '_runwinmain' instead of 'main' */
             add_elf_sym(symtab_section,
diff --git a/tccpp.c b/tccpp.c
index 1a9242b..505ba52 100644
--- a/tccpp.c
+++ b/tccpp.c
@@ -129,7 +129,11 @@ char *get_tok_str(int v, CValue *cv)
     case TOK_CLLONG:
     case TOK_CULLONG:
         /* XXX: not quite exact, but only useful for testing  */
+#ifdef _WIN32
+        sprintf(p, "%u", (unsigned)cv->ull);
+#else
         sprintf(p, "%Lu", cv->ull);
+#endif
         break;
     case TOK_LCHAR:
         cstr_ccat(&cstr_buf, 'L');
@@ -947,7 +951,7 @@ static void label_pop(Sym **ptop, Sym *slast)
             if (s->c) {
                 /* define corresponding symbol. A size of
                    1 is put. */
-                put_extern_sym(s, cur_text_section, (long)s->next, 1);
+                put_extern_sym(s, cur_text_section, s->jnext, 1);
             }
         }
         /* remove label */