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https://bugs.gentoo.org/925284
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=75e9bcccb69a9dea67d90840bd295bbd1749cea3
From 75e9bcccb69a9dea67d90840bd295bbd1749cea3 Mon Sep 17 00:00:00 2001
From: NIIBE Yutaka <gniibe@fsij.org>
Date: Mon, 4 Mar 2024 09:00:59 +0900
Subject: [PATCH] mpi: Fix ECC computation on hppa.
* mpi/ec-inline.h [__hppa] (ADD4_LIMB32, SUB4_LIMB32): New.
* mpi/longlong.h [__hppa] (add_ssaaaa, sub_ddmmss): Add __CLOBBER_CC.
--
Cherry-pick master commit of:
b757f4130af987bdfc769b754b6e9e27882c349c
GnuPG-bug-id: 7022
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
---
mpi/ec-inline.h | 40 ++++++++++++++++++++++++++++++++++++++++
mpi/longlong.h | 12 ++++++------
2 files changed, 46 insertions(+), 6 deletions(-)
diff --git a/mpi/ec-inline.h b/mpi/ec-inline.h
index 0ffdf8eb..c24d5352 100644
--- a/mpi/ec-inline.h
+++ b/mpi/ec-inline.h
@@ -921,6 +921,46 @@ LIMB64_HILO(mpi_limb_t hi, mpi_limb_t lo)
#endif /* HAVE_COMPATIBLE_GCC_ARM_PLATFORM_AS */
+#if defined (__hppa) && __GNUC__ >= 4
+#define ADD4_LIMB32(A3, A2, A1, A0, B3, B2, B1, B0, C3, C2, C1, C0) \
+ __asm__ ("add %7,%11,%3\n\t" \
+ "addc %6,%10,%2\n\t" \
+ "addc %5,%9,%1\n\t" \
+ "addc %4,%8,%0" \
+ : "=r" (A3), \
+ "=&r" (A2), \
+ "=&r" (A1), \
+ "=&r" (A0) \
+ : "rM" ((mpi_limb_t)(B3)), \
+ "rM" ((mpi_limb_t)(B2)), \
+ "rM" ((mpi_limb_t)(B1)), \
+ "rM" ((mpi_limb_t)(B0)), \
+ "rM" ((mpi_limb_t)(C3)), \
+ "rM" ((mpi_limb_t)(C2)), \
+ "rM" ((mpi_limb_t)(C1)), \
+ "rM" ((mpi_limb_t)(C0)) \
+ : "cc")
+
+#define SUB4_LIMB32(A3, A2, A1, A0, B3, B2, B1, B0, C3, C2, C1, C0) \
+ __asm__ ("sub %7,%11,%3\n\t" \
+ "subb %6,%10,%2\n\t" \
+ "subb %5,%9,%1\n\t" \
+ "subb %4,%8,%0\n\t" \
+ : "=r" (A3), \
+ "=&r" (A2), \
+ "=&r" (A1), \
+ "=&r" (A0) \
+ : "rM" ((mpi_limb_t)(B3)), \
+ "rM" ((mpi_limb_t)(B2)), \
+ "rM" ((mpi_limb_t)(B1)), \
+ "rM" ((mpi_limb_t)(B0)), \
+ "rM" ((mpi_limb_t)(C3)), \
+ "rM" ((mpi_limb_t)(C2)), \
+ "rM" ((mpi_limb_t)(C1)), \
+ "rM" ((mpi_limb_t)(C0)) \
+ : "cc")
+
+#endif /* __hppa */
/* Common 32-bit arch addition/subtraction macros. */
diff --git a/mpi/longlong.h b/mpi/longlong.h
index c299534c..1ab70e7e 100644
--- a/mpi/longlong.h
+++ b/mpi/longlong.h
@@ -394,23 +394,23 @@ extern UDItype __udiv_qrnnd ();
***************************************/
#if defined (__hppa) && W_TYPE_SIZE == 32
# define add_ssaaaa(sh, sl, ah, al, bh, bl) \
- __asm__ (" add %4,%5,%1\n" \
- " addc %2,%3,%0" \
+ __asm__ ("add %4,%5,%1\n\t" \
+ "addc %2,%3,%0" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "%rM" ((USItype)(ah)), \
"rM" ((USItype)(bh)), \
"%rM" ((USItype)(al)), \
- "rM" ((USItype)(bl)))
+ "rM" ((USItype)(bl)) __CLOBBER_CC)
# define sub_ddmmss(sh, sl, ah, al, bh, bl) \
- __asm__ (" sub %4,%5,%1\n" \
- " subb %2,%3,%0" \
+ __asm__ ("sub %4,%5,%1\n\t" \
+ "subb %2,%3,%0" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "rM" ((USItype)(ah)), \
"rM" ((USItype)(bh)), \
"rM" ((USItype)(al)), \
- "rM" ((USItype)(bl)))
+ "rM" ((USItype)(bl)) __CLOBBER_CC)
# if defined (_PA_RISC1_1)
# define umul_ppmm(wh, wl, u, v) \
do { \
--
2.30.2
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