From: Rich Felker <dalias@aerifal.cx>
Date: Wed, 22 May 2019 22:28:32 +0000 (-0400)
Subject: make powerpc64 vrregset_t logical layout match expected API
X-Git-Tag: v1.1.23~34
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=ac304227bb3ea1787d581f17d76a5f5f3abff51f;p=oweals%2Fmusl.git

make powerpc64 vrregset_t logical layout match expected API

between v2 and v3 of the powerpc64 port patch, the change was made
from a 32x4 array of 32-bit unsigned ints for vrregs[] to a 32-element
array of __int128. this mismatches the API applications working with
mcontext_t expect from glibc, and seems to have been motivated by a
misinterpretation of a comment on how aarch64 did things as a
suggestion to do the same on powerpc64.
---

diff --git a/arch/powerpc64/bits/signal.h b/arch/powerpc64/bits/signal.h
index 94c7a327..2cc0604c 100644
--- a/arch/powerpc64/bits/signal.h
+++ b/arch/powerpc64/bits/signal.h
@@ -16,7 +16,10 @@ typedef struct {
 } fpregset_t;
 
 typedef struct {
-	unsigned __int128 vrregs[32];
+#ifdef __GNUC__
+	__attribute__((__aligned__(16)))
+#endif
+	unsigned vrregs[32][4];
 	struct {
 #if __BIG_ENDIAN__
 		unsigned _pad[3], vscr_word;