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([2605:ef80:80f6:61fa:9bc2:5095:d612:5e22]) by smtp.gmail.com with ESMTPSA id y23-20020a056870b01700b0010ef8ccde67sm2285220oae.13.2022.08.16.13.35.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Aug 2022 13:35:01 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, alex.bennee@linaro.org, iii@linux.ibm.com Subject: [PATCH v2 28/33] target/arm: Change gen_exception_insn* to work on displacements Date: Tue, 16 Aug 2022 15:33:55 -0500 Message-Id: <20220816203400.161187-29-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220816203400.161187-1-richard.henderson@linaro.org> References: <20220816203400.161187-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::233; envelope-from=richard.henderson@linaro.org; helo=mail-oi1-x233.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, T_SCC_BODY_TEXT_LINE=-0.01 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" In preparation for TARGET_TB_PCREL, reduce reliance on absolute values. Signed-off-by: Richard Henderson --- target/arm/translate.h | 4 ++-- target/arm/translate-a64.c | 28 +++++++++++-------------- target/arm/translate-m-nocp.c | 6 +++--- target/arm/translate-mve.c | 2 +- target/arm/translate-vfp.c | 6 +++--- target/arm/translate.c | 39 +++++++++++++++++------------------ 6 files changed, 40 insertions(+), 45 deletions(-) diff --git a/target/arm/translate.h b/target/arm/translate.h index 33b94a18bb..d42059aa1d 100644 --- a/target/arm/translate.h +++ b/target/arm/translate.h @@ -281,9 +281,9 @@ void arm_jump_cc(DisasCompare *cmp, TCGLabel *label); void arm_gen_test_cc(int cc, TCGLabel *label); MemOp pow2_align(unsigned i); void unallocated_encoding(DisasContext *s); -void gen_exception_insn_el(DisasContext *s, uint64_t pc, int excp, +void gen_exception_insn_el(DisasContext *s, int pc_diff, int excp, uint32_t syn, uint32_t target_el); -void gen_exception_insn(DisasContext *s, uint64_t pc, int excp, uint32_t syn); +void gen_exception_insn(DisasContext *s, int pc_diff, int excp, uint32_t syn); /* Return state of Alternate Half-precision flag, caller frees result */ static inline TCGv_i32 get_ahp_flag(void) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 90f31b1dff..422ce9288d 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -1163,7 +1163,7 @@ static bool fp_access_check_only(DisasContext *s) assert(!s->fp_access_checked); s->fp_access_checked = true; - gen_exception_insn_el(s, s->pc_curr, EXCP_UDEF, + gen_exception_insn_el(s, 0, EXCP_UDEF, syn_fp_access_trap(1, 0xe, false, 0), s->fp_excp_el); return false; @@ -1178,7 +1178,7 @@ static bool fp_access_check(DisasContext *s) return false; } if (s->sme_trap_nonstreaming && s->is_nonstreaming) { - gen_exception_insn(s, s->pc_curr, EXCP_UDEF, + gen_exception_insn(s, 0, EXCP_UDEF, syn_smetrap(SME_ET_Streaming, false)); return false; } @@ -1198,7 +1198,7 @@ bool sve_access_check(DisasContext *s) goto fail_exit; } } else if (s->sve_excp_el) { - gen_exception_insn_el(s, s->pc_curr, EXCP_UDEF, + gen_exception_insn_el(s, 0, EXCP_UDEF, syn_sve_access_trap(), s->sve_excp_el); goto fail_exit; } @@ -1220,7 +1220,7 @@ bool sve_access_check(DisasContext *s) static bool sme_access_check(DisasContext *s) { if (s->sme_excp_el) { - gen_exception_insn_el(s, s->pc_curr, EXCP_UDEF, + gen_exception_insn_el(s, 0, EXCP_UDEF, syn_smetrap(SME_ET_AccessTrap, false), s->sme_excp_el); return false; @@ -1250,12 +1250,12 @@ bool sme_enabled_check_with_svcr(DisasContext *s, unsigned req) return false; } if (FIELD_EX64(req, SVCR, SM) && !s->pstate_sm) { - gen_exception_insn(s, s->pc_curr, EXCP_UDEF, + gen_exception_insn(s, 0, EXCP_UDEF, syn_smetrap(SME_ET_NotStreaming, false)); return false; } if (FIELD_EX64(req, SVCR, ZA) && !s->pstate_za) { - gen_exception_insn(s, s->pc_curr, EXCP_UDEF, + gen_exception_insn(s, 0, EXCP_UDEF, syn_smetrap(SME_ET_InactiveZA, false)); return false; } @@ -1915,7 +1915,7 @@ static void gen_sysreg_undef(DisasContext *s, bool isread, } else { syndrome = syn_uncategorized(); } - gen_exception_insn(s, s->pc_curr, EXCP_UDEF, syndrome); + gen_exception_insn(s, 0, EXCP_UDEF, syndrome); } /* MRS - move from system register @@ -2169,8 +2169,7 @@ static void disas_exc(DisasContext *s, uint32_t insn) switch (op2_ll) { case 1: /* SVC */ gen_ss_advance(s); - gen_exception_insn(s, s->base.pc_next, EXCP_SWI, - syn_aa64_svc(imm16)); + gen_exception_insn(s, 4, EXCP_SWI, syn_aa64_svc(imm16)); break; case 2: /* HVC */ if (s->current_el == 0) { @@ -2183,8 +2182,7 @@ static void disas_exc(DisasContext *s, uint32_t insn) gen_a64_update_pc(s, 0); gen_helper_pre_hvc(cpu_env); gen_ss_advance(s); - gen_exception_insn_el(s, s->base.pc_next, EXCP_HVC, - syn_aa64_hvc(imm16), 2); + gen_exception_insn_el(s, 4, EXCP_HVC, syn_aa64_hvc(imm16), 2); break; case 3: /* SMC */ if (s->current_el == 0) { @@ -2194,8 +2192,7 @@ static void disas_exc(DisasContext *s, uint32_t insn) gen_a64_update_pc(s, 0); gen_helper_pre_smc(cpu_env, tcg_constant_i32(syn_aa64_smc(imm16))); gen_ss_advance(s); - gen_exception_insn_el(s, s->base.pc_next, EXCP_SMC, - syn_aa64_smc(imm16), 3); + gen_exception_insn_el(s, 4, EXCP_SMC, syn_aa64_smc(imm16), 3); break; default: unallocated_encoding(s); @@ -14843,7 +14840,7 @@ static void aarch64_tr_translate_insn(DisasContextBase *dcbase, CPUState *cpu) * Illegal execution state. This has priority over BTI * exceptions, but comes after instruction abort exceptions. */ - gen_exception_insn(s, s->pc_curr, EXCP_UDEF, syn_illegalstate()); + gen_exception_insn(s, 0, EXCP_UDEF, syn_illegalstate()); return; } @@ -14874,8 +14871,7 @@ static void aarch64_tr_translate_insn(DisasContextBase *dcbase, CPUState *cpu) if (s->btype != 0 && s->guarded_page && !btype_destination_ok(insn, s->bt, s->btype)) { - gen_exception_insn(s, s->pc_curr, EXCP_UDEF, - syn_btitrap(s->btype)); + gen_exception_insn(s, 0, EXCP_UDEF, syn_btitrap(s->btype)); return; } } else { diff --git a/target/arm/translate-m-nocp.c b/target/arm/translate-m-nocp.c index 4029d7fdd4..694fae7e2e 100644 --- a/target/arm/translate-m-nocp.c +++ b/target/arm/translate-m-nocp.c @@ -143,7 +143,7 @@ static bool trans_VSCCLRM(DisasContext *s, arg_VSCCLRM *a) tcg_gen_brcondi_i32(TCG_COND_EQ, sfpa, 0, s->condlabel); if (s->fp_excp_el != 0) { - gen_exception_insn_el(s, s->pc_curr, EXCP_NOCP, + gen_exception_insn_el(s, 0, EXCP_NOCP, syn_uncategorized(), s->fp_excp_el); return true; } @@ -765,12 +765,12 @@ static bool trans_NOCP(DisasContext *s, arg_nocp *a) } if (a->cp != 10) { - gen_exception_insn(s, s->pc_curr, EXCP_NOCP, syn_uncategorized()); + gen_exception_insn(s, 0, EXCP_NOCP, syn_uncategorized()); return true; } if (s->fp_excp_el != 0) { - gen_exception_insn_el(s, s->pc_curr, EXCP_NOCP, + gen_exception_insn_el(s, 0, EXCP_NOCP, syn_uncategorized(), s->fp_excp_el); return true; } diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c index 0cf1b5ea4f..db7ea3f603 100644 --- a/target/arm/translate-mve.c +++ b/target/arm/translate-mve.c @@ -100,7 +100,7 @@ bool mve_eci_check(DisasContext *s) return true; default: /* Reserved value: INVSTATE UsageFault */ - gen_exception_insn(s, s->pc_curr, EXCP_INVSTATE, syn_uncategorized()); + gen_exception_insn(s, 0, EXCP_INVSTATE, syn_uncategorized()); return false; } } diff --git a/target/arm/translate-vfp.c b/target/arm/translate-vfp.c index 070f465b17..5c5d58d2c6 100644 --- a/target/arm/translate-vfp.c +++ b/target/arm/translate-vfp.c @@ -230,7 +230,7 @@ static bool vfp_access_check_a(DisasContext *s, bool ignore_vfp_enabled) int coproc = arm_dc_feature(s, ARM_FEATURE_V8) ? 0 : 0xa; uint32_t syn = syn_fp_access_trap(1, 0xe, false, coproc); - gen_exception_insn_el(s, s->pc_curr, EXCP_UDEF, syn, s->fp_excp_el); + gen_exception_insn_el(s, 0, EXCP_UDEF, syn, s->fp_excp_el); return false; } @@ -240,7 +240,7 @@ static bool vfp_access_check_a(DisasContext *s, bool ignore_vfp_enabled) * appear to be any insns which touch VFP which are allowed. */ if (s->sme_trap_nonstreaming) { - gen_exception_insn(s, s->pc_curr, EXCP_UDEF, + gen_exception_insn(s, 0, EXCP_UDEF, syn_smetrap(SME_ET_Streaming, curr_insn_len(s) == 2)); return false; @@ -272,7 +272,7 @@ bool vfp_access_check_m(DisasContext *s, bool skip_context_update) * the encoding space handled by the patterns in m-nocp.decode, * and for them we may need to raise NOCP here. */ - gen_exception_insn_el(s, s->pc_curr, EXCP_NOCP, + gen_exception_insn_el(s, 0, EXCP_NOCP, syn_uncategorized(), s->fp_excp_el); return false; } diff --git a/target/arm/translate.c b/target/arm/translate.c index 92c52edb7b..d441e31d3a 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -1103,32 +1103,33 @@ static void gen_exception(int excp, uint32_t syndrome) tcg_constant_i32(syndrome)); } -static void gen_exception_insn_el_v(DisasContext *s, uint64_t pc, int excp, +static void gen_exception_insn_el_v(DisasContext *s, int pc_diff, int excp, uint32_t syn, TCGv_i32 tcg_el) { if (s->aarch64) { - gen_a64_update_pc(s, pc - s->pc_curr); + gen_a64_update_pc(s, pc_diff); } else { gen_set_condexec(s); - gen_update_pc(s, pc - s->pc_curr); + gen_update_pc(s, pc_diff); } gen_exception_el_v(excp, syn, tcg_el); s->base.is_jmp = DISAS_NORETURN; } -void gen_exception_insn_el(DisasContext *s, uint64_t pc, int excp, +void gen_exception_insn_el(DisasContext *s, int pc_diff, int excp, uint32_t syn, uint32_t target_el) { - gen_exception_insn_el_v(s, pc, excp, syn, tcg_constant_i32(target_el)); + gen_exception_insn_el_v(s, pc_diff, excp, syn, + tcg_constant_i32(target_el)); } -void gen_exception_insn(DisasContext *s, uint64_t pc, int excp, uint32_t syn) +void gen_exception_insn(DisasContext *s, int pc_diff, int excp, uint32_t syn) { if (s->aarch64) { - gen_a64_update_pc(s, pc - s->pc_curr); + gen_a64_update_pc(s, pc_diff); } else { gen_set_condexec(s); - gen_update_pc(s, pc - s->pc_curr); + gen_update_pc(s, pc_diff); } gen_exception(excp, syn); s->base.is_jmp = DISAS_NORETURN; @@ -1145,7 +1146,7 @@ static void gen_exception_bkpt_insn(DisasContext *s, uint32_t syn) void unallocated_encoding(DisasContext *s) { /* Unallocated and reserved encodings are uncategorized */ - gen_exception_insn(s, s->pc_curr, EXCP_UDEF, syn_uncategorized()); + gen_exception_insn(s, 0, EXCP_UDEF, syn_uncategorized()); } /* Force a TB lookup after an instruction that changes the CPU state. */ @@ -2872,7 +2873,7 @@ static bool msr_banked_access_decode(DisasContext *s, int r, int sysm, int rn, tcg_el = tcg_constant_i32(3); } - gen_exception_insn_el_v(s, s->pc_curr, EXCP_UDEF, + gen_exception_insn_el_v(s, 0, EXCP_UDEF, syn_uncategorized(), tcg_el); tcg_temp_free_i32(tcg_el); return false; @@ -2898,7 +2899,7 @@ static bool msr_banked_access_decode(DisasContext *s, int r, int sysm, int rn, undef: /* If we get here then some access check did not pass */ - gen_exception_insn(s, s->pc_curr, EXCP_UDEF, syn_uncategorized()); + gen_exception_insn(s, 0, EXCP_UDEF, syn_uncategorized()); return false; } @@ -5122,8 +5123,7 @@ static void gen_srs(DisasContext *s, * For the UNPREDICTABLE cases we choose to UNDEF. */ if (s->current_el == 1 && !s->ns && mode == ARM_CPU_MODE_MON) { - gen_exception_insn_el(s, s->pc_curr, EXCP_UDEF, - syn_uncategorized(), 3); + gen_exception_insn_el(s, 0, EXCP_UDEF, syn_uncategorized(), 3); return; } @@ -8508,7 +8508,7 @@ static bool trans_WLS(DisasContext *s, arg_WLS *a) * Do the check-and-raise-exception by hand. */ if (s->fp_excp_el) { - gen_exception_insn_el(s, s->pc_curr, EXCP_NOCP, + gen_exception_insn_el(s, 0, EXCP_NOCP, syn_uncategorized(), s->fp_excp_el); return true; } @@ -8611,7 +8611,7 @@ static bool trans_LE(DisasContext *s, arg_LE *a) tmp = load_cpu_field(v7m.ltpsize); tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, 4, skipexc); tcg_temp_free_i32(tmp); - gen_exception_insn(s, s->pc_curr, EXCP_INVSTATE, syn_uncategorized()); + gen_exception_insn(s, 0, EXCP_INVSTATE, syn_uncategorized()); gen_set_label(skipexc); } @@ -9081,7 +9081,7 @@ static void disas_arm_insn(DisasContext *s, unsigned int insn) * UsageFault exception. */ if (arm_dc_feature(s, ARM_FEATURE_M)) { - gen_exception_insn(s, s->pc_curr, EXCP_INVSTATE, syn_uncategorized()); + gen_exception_insn(s, 0, EXCP_INVSTATE, syn_uncategorized()); return; } @@ -9090,7 +9090,7 @@ static void disas_arm_insn(DisasContext *s, unsigned int insn) * Illegal execution state. This has priority over BTI * exceptions, but comes after instruction abort exceptions. */ - gen_exception_insn(s, s->pc_curr, EXCP_UDEF, syn_illegalstate()); + gen_exception_insn(s, 0, EXCP_UDEF, syn_illegalstate()); return; } @@ -9655,7 +9655,7 @@ static void thumb_tr_translate_insn(DisasContextBase *dcbase, CPUState *cpu) * Illegal execution state. This has priority over BTI * exceptions, but comes after instruction abort exceptions. */ - gen_exception_insn(dc, dc->pc_curr, EXCP_UDEF, syn_illegalstate()); + gen_exception_insn(dc, 0, EXCP_UDEF, syn_illegalstate()); return; } @@ -9728,8 +9728,7 @@ static void thumb_tr_translate_insn(DisasContextBase *dcbase, CPUState *cpu) */ tcg_remove_ops_after(dc->insn_eci_rewind); dc->condjmp = 0; - gen_exception_insn(dc, dc->pc_curr, EXCP_INVSTATE, - syn_uncategorized()); + gen_exception_insn(dc, 0, EXCP_INVSTATE, syn_uncategorized()); } arm_post_translate_insn(dc);