qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: David Gibson <david@gibson.dropbear.id.au>
To: peter.maydell@linaro.org, groug@kaod.org
Cc: "Matheus Ferst" <matheus.ferst@eldorado.org.br>,
	"David Gibson" <david@gibson.dropbear.id.au>,
	qemu-ppc@nongnu.org, qemu-devel@nongnu.org,
	"Philippe Mathieu-Daudé" <philmd@redhat.com>
Subject: [PULL 17/18] include/qemu/int128.h: introduce bswap128s
Date: Fri, 27 Aug 2021 17:09:45 +1000	[thread overview]
Message-ID: <20210827070946.219970-18-david@gibson.dropbear.id.au> (raw)
In-Reply-To: <20210827070946.219970-1-david@gibson.dropbear.id.au>

From: Matheus Ferst <matheus.ferst@eldorado.org.br>

Changes the current bswap128 implementation to use __builtin_bswap128
when available, adds a bswap128 implementation for !CONFIG_INT128
builds, and introduces bswap128s based on bswap128.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20210826145656.2507213-2-matheus.ferst@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 include/qemu/int128.h | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/include/qemu/int128.h b/include/qemu/int128.h
index 17436d851d..2ac0746426 100644
--- a/include/qemu/int128.h
+++ b/include/qemu/int128.h
@@ -1,9 +1,9 @@
 #ifndef INT128_H
 #define INT128_H
 
-#ifdef CONFIG_INT128
 #include "qemu/bswap.h"
 
+#ifdef CONFIG_INT128
 typedef __int128_t Int128;
 
 static inline Int128 int128_make64(uint64_t a)
@@ -155,7 +155,11 @@ static inline void int128_subfrom(Int128 *a, Int128 b)
 
 static inline Int128 bswap128(Int128 a)
 {
+#if __has_builtin(__builtin_bswap128)
+    return __builtin_bswap128(a);
+#else
     return int128_make128(bswap64(int128_gethi(a)), bswap64(int128_getlo(a)));
+#endif
 }
 
 #else /* !CONFIG_INT128 */
@@ -350,5 +354,16 @@ static inline void int128_subfrom(Int128 *a, Int128 b)
     *a = int128_sub(*a, b);
 }
 
+static inline Int128 bswap128(Int128 a)
+{
+    return int128_make128(bswap64(a.hi), bswap64(a.lo));
+}
+
 #endif /* CONFIG_INT128 */
+
+static inline void bswap128s(Int128 *s)
+{
+    *s = bswap128(*s);
+}
+
 #endif /* INT128_H */
-- 
2.31.1



  parent reply	other threads:[~2021-08-27  7:42 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-27  7:09 [PULL 00/18] ppc-for-6.2 queue 20210827 David Gibson
2021-08-27  7:09 ` [PULL 01/18] xive: Remove extra '0x' prefix in trace events David Gibson
2021-08-27  7:09 ` [PULL 02/18] spapr_pci: Fix leak in spapr_phb_vfio_get_loc_code() with g_autofree David Gibson
2021-08-27  7:09 ` [PULL 03/18] target/ppc: divided mmu_helper.c in 2 files David Gibson
2021-08-27  7:09 ` [PULL 04/18] target/ppc: moved ppc_store_sdr1 to mmu_common.c David Gibson
2021-08-27  7:09 ` [PULL 05/18] target/ppc: moved store_40x_sler to helper_regs.c David Gibson
2021-08-27  7:09 ` [PULL 06/18] ppc/pnv: update skiboot to commit 820d43c0a775 David Gibson
2021-08-27  7:09 ` [PULL 07/18] ppc: Add a POWER10 DD2 CPU David Gibson
2021-08-27  7:09 ` [PULL 08/18] ppc/pnv: Change the POWER10 machine to support DD2 only David Gibson
2021-08-27  7:09 ` [PULL 09/18] ppc/pnv: powerpc_excp: Do not discard HDECR exception when entering power-saving mode David Gibson
2021-08-27  7:09 ` [PULL 10/18] ppc/pnv: Use a simple incrementing index for the chip-id David Gibson
2021-08-27  7:09 ` [PULL 11/18] ppc/pnv: Distribute RAM among the chips David Gibson
2021-08-27  7:09 ` [PULL 12/18] ppc/pnv: add a chip topology index for POWER10 David Gibson
2021-08-27  7:09 ` [PULL 13/18] ppc/xive: Export PQ get/set routines David Gibson
2021-08-27  7:09 ` [PULL 14/18] ppc/xive: Export xive_presenter_notify() David Gibson
2021-08-27  7:09 ` [PULL 15/18] include/qemu/int128.h: define struct Int128 according to the host endianness David Gibson
2021-08-27  7:09 ` [PULL 16/18] target/ppc: fix vextu[bhw][lr]x helpers David Gibson
2021-08-27  7:09 ` David Gibson [this message]
2021-08-27  7:09 ` [PULL 18/18] target/ppc: fix vector registers access in gdbstub for little-endian David Gibson
2021-08-28 14:13 ` [PULL 00/18] ppc-for-6.2 queue 20210827 Peter Maydell

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210827070946.219970-18-david@gibson.dropbear.id.au \
    --to=david@gibson.dropbear.id.au \
    --cc=groug@kaod.org \
    --cc=matheus.ferst@eldorado.org.br \
    --cc=peter.maydell@linaro.org \
    --cc=philmd@redhat.com \
    --cc=qemu-devel@nongnu.org \
    --cc=qemu-ppc@nongnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).