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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=205.220.180.131; envelope-from=brian.cain@oss.qualcomm.com; helo=mx0b-0031df01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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 @qualcomm.com) X-ZM-MESSAGEID: 1756785085772116600 From: Brian Cain Reviewed-by: Taylor Simpson Signed-off-by: Brian Cain --- linux-user/hexagon/cpu_loop.c | 7 +++++ target/hexagon/hex_mmu.c | 54 ++++++++++++++++++++++++++++++++++- 2 files changed, 60 insertions(+), 1 deletion(-) diff --git a/linux-user/hexagon/cpu_loop.c b/linux-user/hexagon/cpu_loop.c index 28ad8073f6..7853819f77 100644 --- a/linux-user/hexagon/cpu_loop.c +++ b/linux-user/hexagon/cpu_loop.c @@ -63,6 +63,13 @@ void cpu_loop(CPUHexagonState *env) break; case HEX_EVENT_PRECISE: switch (env->cause_code) { + case HEX_CAUSE_FETCH_NO_UPAGE: + case HEX_CAUSE_PRIV_NO_UREAD: + case HEX_CAUSE_PRIV_NO_UWRITE: + force_sig_fault(TARGET_SIGSEGV, TARGET_SEGV_MAPERR, + env->gpr[HEX_REG_PC]); + + break; case HEX_CAUSE_PRIV_USER_NO_GINSN: case HEX_CAUSE_PRIV_USER_NO_SINSN: case HEX_CAUSE_INVALID_PACKET: diff --git a/target/hexagon/hex_mmu.c b/target/hexagon/hex_mmu.c index 332e7f4029..8f9f16158f 100644 --- a/target/hexagon/hex_mmu.c +++ b/target/hexagon/hex_mmu.c @@ -264,7 +264,59 @@ static inline void hex_tlb_entry_get_perm(CPUHexagonSt= ate *env, uint64_t entry, int mmu_idx, int *prot, int32_t *excp) { - g_assert_not_reached(); + bool perm_x =3D GET_TLB_FIELD(entry, PTE_X); + bool perm_w =3D GET_TLB_FIELD(entry, PTE_W); + bool perm_r =3D GET_TLB_FIELD(entry, PTE_R); + bool perm_u =3D GET_TLB_FIELD(entry, PTE_U); + bool user_idx =3D mmu_idx =3D=3D MMU_USER_IDX; + + if (mmu_idx =3D=3D MMU_KERNEL_IDX) { + *prot =3D PAGE_VALID | PAGE_READ | PAGE_WRITE | PAGE_EXEC; + return; + } + + *prot =3D PAGE_VALID; + switch (access_type) { + case MMU_INST_FETCH: + if (user_idx && !perm_u) { + *excp =3D HEX_EVENT_PRECISE; + env->cause_code =3D HEX_CAUSE_FETCH_NO_UPAGE; + } else if (!perm_x) { + *excp =3D HEX_EVENT_PRECISE; + env->cause_code =3D HEX_CAUSE_FETCH_NO_XPAGE; + } + break; + case MMU_DATA_LOAD: + if (user_idx && !perm_u) { + *excp =3D HEX_EVENT_PRECISE; + env->cause_code =3D HEX_CAUSE_PRIV_NO_UREAD; + } else if (!perm_r) { + *excp =3D HEX_EVENT_PRECISE; + env->cause_code =3D HEX_CAUSE_PRIV_NO_READ; + } + break; + case MMU_DATA_STORE: + if (user_idx && !perm_u) { + *excp =3D HEX_EVENT_PRECISE; + env->cause_code =3D HEX_CAUSE_PRIV_NO_UWRITE; + } else if (!perm_w) { + *excp =3D HEX_EVENT_PRECISE; + env->cause_code =3D HEX_CAUSE_PRIV_NO_WRITE; + } + break; + } + + if (!user_idx || perm_u) { + if (perm_x) { + *prot |=3D PAGE_EXEC; + } + if (perm_r) { + *prot |=3D PAGE_READ; + } + if (perm_w) { + *prot |=3D PAGE_WRITE; + } + } } =20 static inline bool hex_tlb_entry_match(CPUHexagonState *env, uint64_t entr= y, --=20 2.34.1