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From: Sven Schnelle <svens@stackframe.org>
To: Richard Henderson <richard.henderson@linaro.org>
Cc: qemu-devel@nongnu.org, Helge Deller <deller@gmx.de>,
	Sven Schnelle <svens@stackframe.org>
Subject: [PATCH 4/7] target/hppa: exit tb on flush cache instructions
Date: Sun, 17 Mar 2024 23:14:28 +0100	[thread overview]
Message-ID: <20240317221431.251515-5-svens@stackframe.org> (raw)
In-Reply-To: <20240317221431.251515-1-svens@stackframe.org>

When the guest modifies the tb it is currently executing from,
it executes a fic instruction. Exit the tb on such instruction,
otherwise we might execute stale code.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
---
 target/hppa/translate.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/hppa/translate.c b/target/hppa/translate.c
index 8ba31567e8..58d7ec1ade 100644
--- a/target/hppa/translate.c
+++ b/target/hppa/translate.c
@@ -1940,6 +1940,7 @@ static void do_page_zero(DisasContext *ctx)
 static bool trans_nop(DisasContext *ctx, arg_nop *a)
 {
     cond_free(&ctx->null_cond);
+    ctx->base.is_jmp = DISAS_IAQ_N_STALE;
     return true;
 }
 
@@ -2290,6 +2291,7 @@ static bool trans_nop_addrx(DisasContext *ctx, arg_ldst *a)
         save_gpr(ctx, a->b, dest);
     }
     cond_free(&ctx->null_cond);
+    ctx->base.is_jmp = DISAS_IAQ_N_STALE;
     return true;
 }
 
-- 
2.43.2



  parent reply	other threads:[~2024-03-17 22:16 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-17 22:14 [PATCH 0/7] few fixes for hppa target Sven Schnelle
2024-03-17 22:14 ` [PATCH 1/7] target/hppa: ldcw,s uses static shift of 3 Sven Schnelle
2024-03-18 20:31   ` Richard Henderson
2024-03-17 22:14 ` [PATCH 2/7] target/hppa: fix shrp for wide mode Sven Schnelle
2024-03-18 20:28   ` Helge Deller
2024-03-18 20:35   ` Richard Henderson
2024-03-17 22:14 ` [PATCH 3/7] target/hppa: fix access_id check Sven Schnelle
2024-03-18 20:37   ` Helge Deller
2024-03-18 21:12   ` Richard Henderson
2024-03-19  7:10     ` Sven Schnelle
2024-03-17 22:14 ` Sven Schnelle [this message]
2024-03-18 20:42   ` [PATCH 4/7] target/hppa: exit tb on flush cache instructions Helge Deller
2024-03-18 21:16   ` Richard Henderson
2024-03-17 22:14 ` [PATCH 5/7] target/hppa: copy new_spc to iasq_f on be,n instruction Sven Schnelle
2024-03-18 21:27   ` Richard Henderson
2024-03-19  7:08     ` Sven Schnelle
2024-03-17 22:14 ` [PATCH 6/7] target/hppa: mask privilege bits in mfia Sven Schnelle
2024-03-18 20:45   ` Helge Deller
2024-03-18 21:32   ` Richard Henderson
2024-03-17 22:14 ` [PATCH 7/7] target/hppa: fix do_stdby_e() Sven Schnelle
2024-03-18 21:38   ` Richard Henderson

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