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envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::1029; envelope-from=mchitale@ventanamicro.com; helo=mail-pj1-x1029.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=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+importer2=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @ventanamicro.com) X-ZM-MESSAGEID: 1665925232307100001 Content-Type: text/plain; charset="utf-8" This patch adds a mechanism to generate a virtual instruction instruction exception instead of an illegal instruction exception during instruction decode when virt is enabled. Signed-off-by: Mayuresh Chitale Reviewed-by: Alistair Francis Reviewed-by: Weiwei Li --- target/riscv/translate.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/target/riscv/translate.c b/target/riscv/translate.c index db123da5ec..8b0bd38bb2 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -76,6 +76,7 @@ typedef struct DisasContext { to reset this known value. */ int frm; RISCVMXL ol; + bool virt_inst_excp; bool virt_enabled; const RISCVCPUConfig *cfg_ptr; bool hlsx; @@ -243,7 +244,11 @@ static void gen_exception_illegal(DisasContext *ctx) { tcg_gen_st_i32(tcg_constant_i32(ctx->opcode), cpu_env, offsetof(CPURISCVState, bins)); - generate_exception(ctx, RISCV_EXCP_ILLEGAL_INST); + if (ctx->virt_inst_excp) { + generate_exception(ctx, RISCV_EXCP_VIRT_INSTRUCTION_FAULT); + } else { + generate_exception(ctx, RISCV_EXCP_ILLEGAL_INST); + } } =20 static void gen_exception_inst_addr_mis(DisasContext *ctx) @@ -1062,6 +1067,7 @@ static void decode_opc(CPURISCVState *env, DisasConte= xt *ctx, uint16_t opcode) { has_XVentanaCondOps_p, decode_XVentanaCodeOps }, }; =20 + ctx->virt_inst_excp =3D false; /* Check for compressed insn */ if (insn_len(opcode) =3D=3D 2) { if (!has_ext(ctx, RVC)) { --=20 2.25.1