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[97.126.112.211]) by smtp.gmail.com with ESMTPSA id y15-v6sm8030489pfm.136.2018.06.27.20.03.39 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 27 Jun 2018 20:03:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=R3p19GQQCpUaCzZ/5gjeFqnHGorzb/Pkw8aTgWN7PMI=; b=MFjR/1/Z2HTMjvEbX8LqNsBcoQ+HVqcS3xsXLni7a4hQqCmmCPTv1UZkOz/FwwmYCo rWRRAY41veTaUhyIGn/wl4o/MhnznqwJBjejpUtGXH0SvmTvJ9ISnLcSwy0kK1uoBN/6 HUP9TFSfmiWhi7r2+2tBRdCg97lMT/8nRjZCo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=R3p19GQQCpUaCzZ/5gjeFqnHGorzb/Pkw8aTgWN7PMI=; b=ScUS4VI8ZcW18YmdEMx8HbXwq+r41hLWcEMt6GDK/N3z6LmrhifW7obYVaBQG9fpXy D0juaFXUp5ndEz+nnhH+ZA+sTdOsaNsrd13BOV6hoPBTGHDwUX86L8meNFWBLUz3sCq3 KTm56JNV4hZqqSHMpKqIvaZ8tJabFwmCGfT8cGYtCvvJCZnemIvqtXdrU4cGKL1ltAxi d3H53G2lu0eYBf1GlOOUqF/vFlKCqbd1EVkxYnbJOZyzdM3MdF99HCWiDHLXBKuA6/Mr /KuwZmUDHN9IKj+oeb0LQP4YpcZTJlMz1ijbLjBQoqk8qTxlrm9vDGNKWXKCrCGE7xfB bTSQ== X-Gm-Message-State: APt69E3VE2fHYZ4Yq/MUDMBwH2VrbLB9+FXAPQ7uDdRGnk80iXjTvNXE rMzu5NDp0LefjaiHaTpAUv35N+WHxvU= X-Google-Smtp-Source: ADUXVKLlv0N8hWpyVkBE8w8PhpOdGfDqEnGw772xAOPAN/EBOo05MGvQoLe8+afWR1kc8j9ffLY7lw== X-Received: by 2002:a17:902:3343:: with SMTP id a61-v6mr8552019plc.241.1530155020967; Wed, 27 Jun 2018 20:03:40 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Wed, 27 Jun 2018 20:03:13 -0700 Message-Id: <20180628030330.15615-7-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180628030330.15615-1-richard.henderson@linaro.org> References: <20180628030330.15615-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:400e:c01::230 Subject: [Qemu-devel] [PATCH v3 06/23] target/openrisc: Fix singlestep_enabled X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: shorne@gmail.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" We failed to store to cpu_pc before raising the exception, which caused us to re-execute the same insn that we stepped. Reviewed-by: Stafford Horne Signed-off-by: Richard Henderson --- target/openrisc/translate.c | 35 +++++++++++++++++------------------ 1 file changed, 17 insertions(+), 18 deletions(-) diff --git a/target/openrisc/translate.c b/target/openrisc/translate.c index 43bdf378eb..22848b17ad 100644 --- a/target/openrisc/translate.c +++ b/target/openrisc/translate.c @@ -1335,31 +1335,30 @@ static void openrisc_tr_tb_stop(DisasContextBase *d= cbase, CPUState *cs) { DisasContext *dc =3D container_of(dcbase, DisasContext, base); =20 + /* If we have already exited the TB, nothing following has effect. */ + if (dc->base.is_jmp =3D=3D DISAS_NORETURN) { + return; + } + if ((dc->tb_flags & TB_FLAGS_DFLAG ? 1 : 0) !=3D (dc->delayed_branch != =3D 0)) { tcg_gen_movi_i32(cpu_dflag, dc->delayed_branch !=3D 0); } =20 tcg_gen_movi_tl(cpu_ppc, dc->base.pc_next - 4); - if (dc->base.is_jmp =3D=3D DISAS_NEXT) { - dc->base.is_jmp =3D DISAS_UPDATE; - tcg_gen_movi_tl(cpu_pc, dc->base.pc_next); - } - if (unlikely(dc->base.singlestep_enabled)) { - gen_exception(dc, EXCP_DEBUG); - } else { - switch (dc->base.is_jmp) { - case DISAS_TOO_MANY: - gen_goto_tb(dc, 0, dc->base.pc_next); - break; - case DISAS_NORETURN: - break; - case DISAS_UPDATE: - case DISAS_EXIT: + switch (dc->base.is_jmp) { + case DISAS_TOO_MANY: + gen_goto_tb(dc, 0, dc->base.pc_next); + break; + case DISAS_UPDATE: + case DISAS_EXIT: + if (unlikely(dc->base.singlestep_enabled)) { + gen_exception(dc, EXCP_DEBUG); + } else { tcg_gen_exit_tb(NULL, 0); - break; - default: - g_assert_not_reached(); } + break; + default: + g_assert_not_reached(); } } =20 --=20 2.17.1