libffi intel icc and src/x86/ffi64.c

libffi intel icc and src/x86/ffi64.c

[Aaron Webster]

I've seen some things on the internet about people trying to build libffi
with intel icc, which doesn't define __int128_t. 

I've found that you can just use 

long long sse[MAX_SSE_REGS];

instead of __int128_t in src/x86/ffi64.c, and everything will compile fine.
I think the real intel type is something like __m128, but I'm not 100%
sure.

--
Aaron Webster
	

Re: libffi intel icc and src/x86/ffi64.c

[Anthony Green]

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On Tue, Apr 3, 2012 at 9:31 AM, Aaron Webster <awebster@falsecolour.com> wrote:
> I've seen some things on the internet about people trying to build libffi
> with intel icc, which doesn't define __int128_t.
>
> I've found that you can just use
>
> long long sse[MAX_SSE_REGS];
>
> instead of __int128_t in src/x86/ffi64.c, and everything will compile fine.
> I think the real intel type is something like __m128, but I'm not 100%
> sure.

Hi Aaron,

  Could you please try this patch out with the intel compiler?

Thanks,

AG


>
> --
> Aaron Webster
>

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Index: libffi/ChangeLog
===================================================================
--- libffi.orig/ChangeLog
+++ libffi/ChangeLog
@@ -1,5 +1,10 @@
 2012-04-06  Anthony Green  <green@moxielogic.com>
 
+	* src/x86/ffi64.c (UINT128): Define differently for Intel and GNU
+	compilers, then use it.
+
+2012-04-06  Anthony Green  <green@moxielogic.com>
+
 	* testsuite/Makefile.am (EXTRA_DIST): Add missing test cases.
 	* testsuite/Makefile.in: Rebuilt.
 
Index: libffi/src/x86/ffi64.c
===================================================================
--- libffi.orig/src/x86/ffi64.c
+++ libffi/src/x86/ffi64.c
@@ -37,11 +37,17 @@
 #define MAX_GPR_REGS 6
 #define MAX_SSE_REGS 8
 
+#ifdef __INTEL_COMPILER
+#define UINT128 __m128
+#else
+#define UINT128 __int128_t
+#endif
+
 struct register_args
 {
   /* Registers for argument passing.  */
   UINT64 gpr[MAX_GPR_REGS];
-  __int128_t sse[MAX_SSE_REGS];
+  UINT128 sse[MAX_SSE_REGS];
 };
 
 extern void ffi_call_unix64 (void *args, unsigned long bytes, unsigned flags,