From f3c1ea6c2d7dca7883985820e46ec536e2d7e8cc Mon Sep 17 00:00:00 2001
From: grischka <grischka>
Date: Sat, 15 Oct 2016 16:01:16 +0200
Subject: [PATCH] #define __GNUC__ = 2.1

__GNUC__ nowadays as macro seems to mean the "GNU C dialect"
rather than the compiler itself.  See also

  http://gcc.gnu.org/ml/gcc/2008-07/msg00026.html

This patch will probably cause problems of various kinds but
maybe we should try nonetheless.
---
 libtcc.c | 25 +++++++++++++++++++------
 tccgen.c |  4 ++++
 tcctok.h |  4 ++++
 3 files changed, 27 insertions(+), 6 deletions(-)

diff --git a/libtcc.c b/libtcc.c
index 591fd79..ecb2242 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -885,15 +885,28 @@ LIBTCCAPI TCCState *tcc_new(void)
     /* wint_t is unsigned int by default, but (signed) int on BSDs
        and unsigned short on windows.  Other OSes might have still
        other conventions, sigh.  */
-#if defined(__FreeBSD__) || defined (__FreeBSD_kernel__) || defined(__NetBSD__) || defined(__OpenBSD__)
+# if defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
+  || defined(__NetBSD__) || defined(__OpenBSD__)
     tcc_define_symbol(s, "__WINT_TYPE__", "int");
-#else
+# else
     tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
-#endif
+# endif
+# if 0
     /* glibc defines */
-    tcc_define_symbol(s, "__REDIRECT(name, proto, alias)", "name proto __asm__ (#alias)");
-    tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)", "name proto __asm__ (#alias) __THROW");
-#endif
+    tcc_define_symbol(s, "__REDIRECT(name, proto, alias)",
+        "name proto __asm__ (#alias)");
+    tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)",
+        "name proto __asm__ (#alias) __THROW");
+# endif
+# if 1
+    /* define __GNUC__ to have some useful stuff from sys/cdefs.h */
+    tcc_define_symbol(s, "__GNUC__", "2");
+    tcc_define_symbol(s, "__GNUC_MINOR__", "1");
+    tcc_define_symbol(s, "__builtin_alloca", "alloca");
+    tcc_define_symbol(s, "__builtin_memcpy", "memcpy");
+    tcc_define_symbol(s, "__USER_LABEL_PREFIX__", "");
+# endif
+#endif /* ndef TCC_TARGET_PE */
 
     return s;
 }
diff --git a/tccgen.c b/tccgen.c
index fda0211..2dcfec5 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -3104,10 +3104,14 @@ static void parse_attribute(AttributeDef *ad)
                 case TOK_MODE_DI:
                     ad->a.mode = VT_LLONG + 1;
                     break;
+                case TOK_MODE_QI:
+                    ad->a.mode = VT_BYTE + 1;
+                    break;
                 case TOK_MODE_HI:
                     ad->a.mode = VT_SHORT + 1;
                     break;
                 case TOK_MODE_SI:
+                case TOK_MODE_word:
                     ad->a.mode = VT_INT + 1;
                     break;
                 default:
diff --git a/tcctok.h b/tcctok.h
index 297a47e..228b055 100644
--- a/tcctok.h
+++ b/tcctok.h
@@ -117,10 +117,14 @@
      DEF(TOK_FASTCALL1, "fastcall")
      DEF(TOK_FASTCALL2, "__fastcall")
      DEF(TOK_FASTCALL3, "__fastcall__")
+
      DEF(TOK_MODE, "__mode__")
+     DEF(TOK_MODE_QI, "__QI__")
      DEF(TOK_MODE_DI, "__DI__")
      DEF(TOK_MODE_HI, "__HI__")
      DEF(TOK_MODE_SI, "__SI__")
+     DEF(TOK_MODE_word, "__word__")
+
      DEF(TOK_DLLEXPORT, "dllexport")
      DEF(TOK_DLLIMPORT, "dllimport")
      DEF(TOK_NORETURN1, "noreturn")