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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id t15-20020a5d49cf000000b00230c9d427f9sm16520192wrs.53.2022.10.20.05.22.11 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Oct 2022 05:22:11 -0700 (PDT) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 18/24] target/arm: Change gen_exception_insn* to work on displacements Date: Thu, 20 Oct 2022 13:21:40 +0100 Message-Id: <20221020122146.3177980-19-peter.maydell@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221020122146.3177980-1-peter.maydell@linaro.org> References: <20221020122146.3177980-1-peter.maydell@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::429; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x429.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+patch=linaro.org@nongnu.org Sender: "Qemu-devel" From: Richard Henderson In preparation for TARGET_TB_PCREL, reduce reliance on absolute values. Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson Message-id: 20221020030641.2066807-5-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- target/arm/translate.h | 5 +++-- 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 | 42 +++++++++++++++++------------------ 6 files changed, 43 insertions(+), 46 deletions(-) diff --git a/target/arm/translate.h b/target/arm/translate.h index d651044855a..4aa239e23cd 100644 --- a/target/arm/translate.h +++ b/target/arm/translate.h @@ -281,9 +281,10 @@ 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, target_long 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, target_long 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 b638d14f2d3..8ed192198fd 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -1155,7 +1155,7 @@ 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; @@ -1170,7 +1170,7 @@ 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; } @@ -1190,7 +1190,7 @@ 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; } @@ -1212,7 +1212,7 @@ 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; @@ -1242,12 +1242,12 @@ 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; } @@ -1907,7 +1907,7 @@ 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 @@ -2161,8 +2161,7 @@ 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) { @@ -2175,8 +2174,7 @@ 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) { @@ -2186,8 +2184,7 @@ 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); @@ -14824,7 +14821,7 @@ 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; } @@ -14855,8 +14852,7 @@ 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 4029d7fdd49..694fae7e2e3 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 0cf1b5ea4f5..db7ea3f6038 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 070f465b172..5c5d58d2c62 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 9863a08f496..350f991649b 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -1099,32 +1099,34 @@ 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, - uint32_t syn, TCGv_i32 tcg_el) +static void gen_exception_insn_el_v(DisasContext *s, target_long 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, target_long 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, target_long 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; @@ -1141,7 +1143,7 @@ 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. */ @@ -2865,7 +2867,7 @@ 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; @@ -2891,7 +2893,7 @@ 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; } @@ -5115,8 +5117,7 @@ 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; } @@ -8498,7 +8499,7 @@ 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; } @@ -8601,7 +8602,7 @@ 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); } @@ -9069,7 +9070,7 @@ 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; } @@ -9078,7 +9079,7 @@ 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; } @@ -9642,7 +9643,7 @@ 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; } @@ -9715,8 +9716,7 @@ 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);