libffi/libffi-3.4.2-ppc.patch

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From 83ce80f3194bbf95c39764d075b070389c0f8522 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dan=20Hor=C3=A1k?= <dan@danny.cz>
Date: Mon, 31 Jan 2022 09:21:53 +0000
Subject: [PATCH] powerpc64: fix handling of homogeneous float128 structs
If there is a homogeneous struct with float128 members, they should be
copied to vector register save area. The current code incorrectly copies
only the value of the first member, not increasing the pointer with each
iteration. Fix this.
---
src/powerpc/ffi_linux64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/powerpc/ffi_linux64.c b/src/powerpc/ffi_linux64.c
index 4d50878e4..3454dacd3 100644
--- a/src/powerpc/ffi_linux64.c
+++ b/src/powerpc/ffi_linux64.c
@@ -680,7 +680,7 @@ ffi_prep_args64 (extended_cif *ecif, unsigned long *const stack)
{
if (vecarg_count < NUM_VEC_ARG_REGISTERS64
&& i < nfixedargs)
- memcpy (vec_base.f128++, arg.f128, sizeof (float128));
+ memcpy (vec_base.f128++, arg.f128++, sizeof (float128));
else
memcpy (next_arg.f128, arg.f128++, sizeof (float128));
if (++next_arg.f128 == gpr_end.f128)