qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: laurent@vivier.eu
Subject: [Qemu-devel] [PATCH v2 7/8] linux-user/sparc: Flush register windows before clone
Date: Thu,  9 May 2019 20:27:09 -0700	[thread overview]
Message-ID: <20190510032710.23910-8-richard.henderson@linaro.org> (raw)
In-Reply-To: <20190510032710.23910-1-richard.henderson@linaro.org>

As seen as the very first instruction of sys_clone in the kernel.

Ideally this would be done in or before cpu_copy, and not with a
separate explicit test vs the syscall number, but this is a more
minimal solution.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/sparc/cpu_loop.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c
index 9e357229c0..ff04f67847 100644
--- a/linux-user/sparc/cpu_loop.c
+++ b/linux-user/sparc/cpu_loop.c
@@ -169,6 +169,9 @@ void cpu_loop (CPUSPARCState *env)
         case 0x110:
         case 0x16d:
 #endif
+            if (env->gregs[1] == TARGET_NR_clone) {
+                flush_windows(env);
+            }
             ret = do_syscall (env, env->gregs[1],
                               env->regwptr[0], env->regwptr[1],
                               env->regwptr[2], env->regwptr[3],
-- 
2.17.1



  parent reply	other threads:[~2019-05-10  3:34 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-10  3:27 [Qemu-devel] [PATCH v2 0/8] linux-user sparc fixes Richard Henderson
2019-05-10  3:27 ` [Qemu-devel] [PATCH v2 1/8] linux-user: Disallow setting newsp for fork Richard Henderson
2019-05-15  0:31   ` Richard Henderson
2019-05-10  3:27 ` [Qemu-devel] [PATCH v2 2/8] linux-user: Pass the parent env to cpu_clone_regs Richard Henderson
2019-05-10  3:27 ` [Qemu-devel] [PATCH v2 3/8] target/sparc: Define an enumeration for accessing env->regwptr Richard Henderson
2019-05-15  5:44   ` Philippe Mathieu-Daudé
2019-05-20  3:09     ` Richard Henderson
2019-05-10  3:27 ` [Qemu-devel] [PATCH v2 4/8] linux-user/sparc: Use WREG constants in sparc/target_cpu.h Richard Henderson
2019-05-10  3:27 ` [Qemu-devel] [PATCH v2 5/8] linux-user/sparc: Use WREG constants in sparc/signal.c Richard Henderson
2019-05-10  3:27 ` [Qemu-devel] [PATCH v2 6/8] linux-user/sparc: Fix cpu_clone_regs Richard Henderson
2019-05-10  3:27 ` Richard Henderson [this message]
2019-05-10  3:27 ` [Qemu-devel] [PATCH v2 8/8] scripts/qemu-binfmt-conf: Update for sparc64 Richard Henderson

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=20190510032710.23910-8-richard.henderson@linaro.org \
    --to=richard.henderson@linaro.org \
    --cc=laurent@vivier.eu \
    --cc=qemu-devel@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).