From: Andrew Haley <aph@redhat.com>
Date: Wed, 23 Feb 2005 14:05:13 +0000 (+0000)
Subject: re PR libffi/20104 (gij fails on ppc and not on x86)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=962eea0a03f8d2f73937f82b7329e97824677920;p=gcc.git

re PR libffi/20104 (gij fails on ppc and not on x86)

2005-02-22  Andrew Haley  <aph@redhat.com>

	PR libffi/20104
        * src/powerpc/ffi.c (ffi_prep_cif_machdep): Bump alignment to
        odd-numbered register pairs for 64-bit integer types.

From-SVN: r95455
---

diff --git a/libffi/ChangeLog b/libffi/ChangeLog
index 6de6ef538be..83a1c2b5d9e 100644
--- a/libffi/ChangeLog
+++ b/libffi/ChangeLog
@@ -1,3 +1,8 @@
+2005-02-22  Andrew Haley  <aph@redhat.com>
+
+	* src/powerpc/ffi.c (ffi_prep_cif_machdep): Bump alignment to
+	odd-numbered register pairs for 64-bit integer types.
+
 2005-02-23  Andreas Tobler  <a.tobler@schweiz.ch>
 
 	PR libffi/20104
diff --git a/libffi/src/powerpc/ffi.c b/libffi/src/powerpc/ffi.c
index c8d188777c8..67d945bd826 100644
--- a/libffi/src/powerpc/ffi.c
+++ b/libffi/src/powerpc/ffi.c
@@ -573,10 +573,14 @@ ffi_status ffi_prep_cif_machdep(ffi_cif *cif)
 	    /* 'long long' arguments are passed as two words, but
 	       either both words must fit in registers or both go
 	       on the stack.  If they go on the stack, they must
-	       be 8-byte-aligned.  */
+	       be 8-byte-aligned.  
+
+	       Also, only certain register pairs can be used for
+	       passing long long int -- specifically (r3,r4), (r5,r6),
+	       (r7,r8), (r9,r10).
+	    */
 	    if (intarg_count == NUM_GPR_ARG_REGISTERS-1
-		|| (intarg_count >= NUM_GPR_ARG_REGISTERS
-		    && intarg_count%2 != 0))
+		|| intarg_count%2 != 0)
 	      intarg_count++;
 	    intarg_count += 2;
 	    break;