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Fri, 20 Mar 2026 06:06:11 -0700 (PDT) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Cc: Alexander Graf , Peter Maydell , qemu-arm@nongnu.org, Pedro Barbuda , Mohamed Mediouni , =?UTF-8?q?Alex=20Benn=C3=A9e?= Subject: [RFC PATCH 06/35] target/arm: migrate PAC trap syndromes to registerfields Date: Fri, 20 Mar 2026 13:05:37 +0000 Message-ID: <20260320130607.2071996-7-alex.bennee@linaro.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260320130607.2071996-1-alex.bennee@linaro.org> References: <20260320130607.2071996-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::535; envelope-from=alex.bennee@linaro.org; helo=mail-ed1-x535.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1774012176355158500 syn_pactrap is fairly simple as the ISS is all RES0. Signed-off-by: Alex Benn=C3=A9e --- target/arm/syndrome.h | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/target/arm/syndrome.h b/target/arm/syndrome.h index abec0a4908e..19c7659fb4f 100644 --- a/target/arm/syndrome.h +++ b/target/arm/syndrome.h @@ -398,15 +398,32 @@ static inline uint32_t syn_smetrap(SMEExceptionType e= type, bool is_16bit) return res; } =20 +/* + * ISS encoding for a PAC Fail exceptions + */ +FIELD(PACFAIL_ISS, BnA, 0, 1) /* B key or A key */ +FIELD(PACFAIL_ISS, DnI, 1, 1) /* Data or Instruction */ + static inline uint32_t syn_pacfail(bool data, int keynumber) { - int error_code =3D (data << 1) | keynumber; - return (EC_PACFAIL << ARM_EL_EC_SHIFT) | ARM_EL_IL | error_code; + uint32_t res =3D syn_set_ec(0, EC_PACFAIL); + res =3D FIELD_DP32(res, SYNDROME, IL, 1); + + res =3D FIELD_DP32(res, PACFAIL_ISS, DnI, data); + res =3D FIELD_DP32(res, PACFAIL_ISS, BnA, keynumber); + + return res; } =20 +/* + * ISS encoding for an exception from a trapped Pointer + * Authentication instruction is RES0 + */ static inline uint32_t syn_pactrap(void) { - return (EC_PACTRAP << ARM_EL_EC_SHIFT) | ARM_EL_IL; + uint32_t res =3D syn_set_ec(0, EC_PACTRAP); + res =3D FIELD_DP32(res, SYNDROME, IL, 1); + return res; } =20 static inline uint32_t syn_btitrap(int btype) --=20 2.47.3