>From a commit:

author

 
<http://repo.or.cz/tinycc.git/search/9d679e391660e411d676b847ff4ce72beda6092
7?s=seyko;st=author> seyko
<http://repo.or.cz/tinycc.git/search/9d679e391660e411d676b847ff4ce72beda6092
7?s=sey...@gmail.com;st=author> <sey...@gmail.com>

        
        
Sun, 15 May 2016 20:07:05 +0200 (15 21:07 +0300)


committer

 
<http://repo.or.cz/tinycc.git/search/9d679e391660e411d676b847ff4ce72beda6092
7?s=seyko;st=committer> seyko
<http://repo.or.cz/tinycc.git/search/9d679e391660e411d676b847ff4ce72beda6092
7?s=sey...@gmail.com;st=committer> <sey...@gmail.com>

        
        
Sun, 15 May 2016 20:07:05 +0200 (15 21:07 +0300)

    a patch from tcc bugzilla.
    From: Reuben Thomas
    Date: Thu, 31 Jul 2014 13:50:13 +0100
    Subject: [PATCH] libtcc.c: add memory model macros __{L,}LP64__


 
<http://repo.or.cz/tinycc.git/blob/9d679e391660e411d676b847ff4ce72beda60927:
/libtcc.c> libtcc.c

        patch
<http://repo.or.cz/tinycc.git/commitdiff/9d679e391660e411d676b847ff4ce72beda
60927?hp=7cfd21440b1b75c5ac78351ba02427983d1d20e6#patch1>  | blob
<http://repo.or.cz/tinycc.git/blob/9d679e391660e411d676b847ff4ce72beda60927:
/libtcc.c>  | blame
<http://repo.or.cz/tinycc.git/blame_incremental/9d679e391660e411d676b847ff4c
e72beda60927:/libtcc.c>  | history
<http://repo.or.cz/tinycc.git/history/9d679e391660e411d676b847ff4ce72beda609
27:/libtcc.c> 

 

diff --git a/libtcc.c
<http://repo.or.cz/tinycc.git/blob/7cfd21440b1b75c5ac78351ba02427983d1d20e6:
/libtcc.c>  b/libtcc.c
<http://repo.or.cz/tinycc.git/blob/9d679e391660e411d676b847ff4ce72beda60927:
/libtcc.c> 

index d63b86f
<http://repo.or.cz/tinycc.git/blob/7cfd21440b1b75c5ac78351ba02427983d1d20e6:
/libtcc.c> ..b0fcdf9
<http://repo.or.cz/tinycc.git/blob/9d679e391660e411d676b847ff4ce72beda60927:
/libtcc.c>  100644 (file)

--- a/libtcc.c
<http://repo.or.cz/tinycc.git/blob/7cfd21440b1b75c5ac78351ba02427983d1d20e6:
/libtcc.c> 

+++ b/libtcc.c
<http://repo.or.cz/tinycc.git/blob/9d679e391660e411d676b847ff4ce72beda60927:
/libtcc.c> 

@@
<http://repo.or.cz/tinycc.git/blob/7cfd21440b1b75c5ac78351ba02427983d1d20e6:
/libtcc.c#l1146> -1146,9
<http://repo.or.cz/tinycc.git/blob/9d679e391660e411d676b847ff4ce72beda60927:
/libtcc.c#l1146> +1146,11 @@ LIBTCCAPI TCCState *tcc_new(void)

 #if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64

     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");

     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");

+    tcc_define_symbol(s, "__LLP64__", NULL);

 #else

     tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");

     tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");

+    tcc_define_symbol(s, "__LP64__", NULL);

 #endif

 

 

From: Tinycc-devel [mailto:tinycc-devel-bounces+eligis=orange...@nongnu.org]
On Behalf Of Christian Jullien
Sent: dimanche 18 septembre 2016 14:06
To: tinycc-devel@nongnu.org
Subject: [Tinycc-devel] Why is __LP64__ defined for targets for 32bits
targets?

 

    /* TinyCC & gcc defines */

#if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64

    tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");

    tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");

    tcc_define_symbol(s, "__LLP64__", NULL);

#else

    tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");

    tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");

    tcc_define_symbol(s, "__LP64__", NULL);               // <= here?

#endif

 

Compiling tcc on native 32BITS Windows for example, it defines __LP64__

This variable is specified as (see
https://gcc.gnu.org/onlinedocs/gcc-4.9.2/cpp/Common-Predefined-Macros.html)

 

__LP64__

_LP64

These macros are defined, with value 1, if (and only if) the compilation is
for a target where long int and pointer both use 64-bits and int uses
32-bit. 

 

Testing this macro in programs compiled with tcc 32bits returns wrong
behavior

 

#if defined(__LP64__)

#define MYPTR_SIZE_IN_BYTES 8

// Assume void* is a 64bits pointer which is false on Windows 32bit

#endif

 

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