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From 9fe7c5b6eb373d859390dd5a7844a666d8b7818b Mon Sep 17 00:00:00 2001
From: Torbjörn Granlund <tg@gmplib.org>
Date: Mon, 04 Mar 2013 17:57:33 +0000
Subject: build: fix factor build failure on aarch64
* src/longlong.h (__aarch64__): Make add_ssaaaa and sub_ddmmss work.
* NEWS: Mention the build fix.
Reported at https://bugzilla.redhat.com/917735
---
(limited to 'src/longlong.h')
--- a/src/longlong.h
+++ b/src/longlong.h
@@ -529,23 +529,16 @@
#endif /* __arm__ */
#if defined (__aarch64__) && W_TYPE_SIZE == 64
+/* FIXME: Extend the immediate range for the low word by using both
+ ADDS and SUBS, since they set carry in the same way. */
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
- __asm__ ("adds\t%1, %4, %5\n\tadc\t%0, %2, %3" \
- : "=r" (sh), "=&r" (sl) \
- : "r" (ah), "rZ" (bh), "%r" (al), "rI" (bl) __CLOBBER_CC)
+ __asm__ ("adds\t%1, %x4, %5\n\tadc\t%0, %x2, %x3" \
+ : "=r" (sh), "=&r" (sl) \
+ : "rZ" (ah), "rZ" (bh), "%r" (al), "rI" (bl) __CLOBBER_CC)
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
- do { \
- if (__builtin_constant_p (bl)) \
- { \
- __asm__ ("subs\t%1, %4, %5\n\tsbc\t%0, %2, %3" \
- : "=r" (sh), "=&r" (sl) \
- : "r" (ah), "r" (bh), "r" (al), "rI" (bl) __CLOBBER_CC); \
- } \
- else /* only bh might be a constant */ \
- __asm__ ("subs\t%1, %4, %5\n\tsbc\t%0, %2, %3" \
- : "=r" (sh), "=&r" (sl) \
- : "r" (ah), "rZ" (bh), "r" (al), "rI" (bl) __CLOBBER_CC);\
- } while (0)
+ __asm__ ("subs\t%1, %x4, %5\n\tsbc\t%0, %x2, %x3" \
+ : "=r,r" (sh), "=&r,&r" (sl) \
+ : "rZ,rZ" (ah), "rZ,rZ" (bh), "r,Z" (al), "rI,r" (bl) __CLOBBER_CC)
#define umul_ppmm(ph, pl, m0, m1) \
do { \
UDItype __m0 = (m0), __m1 = (m1); \
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