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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::632; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x632.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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1665958661038100001 Content-Type: text/plain; charset="utf-8" In preparation for TARGET_TB_PCREL, reduce reliance on absolute values. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/translate-a64.c | 40 ++++++++++++++++++++------------------ target/arm/translate.c | 10 ++++++---- 2 files changed, 27 insertions(+), 23 deletions(-) diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 5b67375f4e..6a372ed184 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -370,8 +370,10 @@ static inline bool use_goto_tb(DisasContext *s, uint64= _t dest) return translator_use_goto_tb(&s->base, dest); } =20 -static inline void gen_goto_tb(DisasContext *s, int n, uint64_t dest) +static void gen_goto_tb(DisasContext *s, int n, int64_t diff) { + uint64_t dest =3D s->pc_curr + diff; + if (use_goto_tb(s, dest)) { tcg_gen_goto_tb(n); gen_a64_set_pc_im(dest); @@ -1354,7 +1356,7 @@ static inline AArch64DecodeFn *lookup_disas_fn(const = AArch64DecodeTable *table, */ static void disas_uncond_b_imm(DisasContext *s, uint32_t insn) { - uint64_t addr =3D s->pc_curr + sextract32(insn, 0, 26) * 4; + int64_t diff =3D sextract32(insn, 0, 26) * 4; =20 if (insn & (1U << 31)) { /* BL Branch with link */ @@ -1363,7 +1365,7 @@ static void disas_uncond_b_imm(DisasContext *s, uint3= 2_t insn) =20 /* B Branch / BL Branch with link */ reset_btype(s); - gen_goto_tb(s, 0, addr); + gen_goto_tb(s, 0, diff); } =20 /* Compare and branch (immediate) @@ -1375,14 +1377,14 @@ static void disas_uncond_b_imm(DisasContext *s, uin= t32_t insn) static void disas_comp_b_imm(DisasContext *s, uint32_t insn) { unsigned int sf, op, rt; - uint64_t addr; + int64_t diff; TCGLabel *label_match; TCGv_i64 tcg_cmp; =20 sf =3D extract32(insn, 31, 1); op =3D extract32(insn, 24, 1); /* 0: CBZ; 1: CBNZ */ rt =3D extract32(insn, 0, 5); - addr =3D s->pc_curr + sextract32(insn, 5, 19) * 4; + diff =3D sextract32(insn, 5, 19) * 4; =20 tcg_cmp =3D read_cpu_reg(s, rt, sf); label_match =3D gen_new_label(); @@ -1391,9 +1393,9 @@ static void disas_comp_b_imm(DisasContext *s, uint32_= t insn) tcg_gen_brcondi_i64(op ? TCG_COND_NE : TCG_COND_EQ, tcg_cmp, 0, label_match); =20 - gen_goto_tb(s, 0, s->base.pc_next); + gen_goto_tb(s, 0, 4); gen_set_label(label_match); - gen_goto_tb(s, 1, addr); + gen_goto_tb(s, 1, diff); } =20 /* Test and branch (immediate) @@ -1405,13 +1407,13 @@ static void disas_comp_b_imm(DisasContext *s, uint3= 2_t insn) static void disas_test_b_imm(DisasContext *s, uint32_t insn) { unsigned int bit_pos, op, rt; - uint64_t addr; + int64_t diff; TCGLabel *label_match; TCGv_i64 tcg_cmp; =20 bit_pos =3D (extract32(insn, 31, 1) << 5) | extract32(insn, 19, 5); op =3D extract32(insn, 24, 1); /* 0: TBZ; 1: TBNZ */ - addr =3D s->pc_curr + sextract32(insn, 5, 14) * 4; + diff =3D sextract32(insn, 5, 14) * 4; rt =3D extract32(insn, 0, 5); =20 tcg_cmp =3D tcg_temp_new_i64(); @@ -1422,9 +1424,9 @@ static void disas_test_b_imm(DisasContext *s, uint32_= t insn) tcg_gen_brcondi_i64(op ? TCG_COND_NE : TCG_COND_EQ, tcg_cmp, 0, label_match); tcg_temp_free_i64(tcg_cmp); - gen_goto_tb(s, 0, s->base.pc_next); + gen_goto_tb(s, 0, 4); gen_set_label(label_match); - gen_goto_tb(s, 1, addr); + gen_goto_tb(s, 1, diff); } =20 /* Conditional branch (immediate) @@ -1436,13 +1438,13 @@ static void disas_test_b_imm(DisasContext *s, uint3= 2_t insn) static void disas_cond_b_imm(DisasContext *s, uint32_t insn) { unsigned int cond; - uint64_t addr; + int64_t diff; =20 if ((insn & (1 << 4)) || (insn & (1 << 24))) { unallocated_encoding(s); return; } - addr =3D s->pc_curr + sextract32(insn, 5, 19) * 4; + diff =3D sextract32(insn, 5, 19) * 4; cond =3D extract32(insn, 0, 4); =20 reset_btype(s); @@ -1450,12 +1452,12 @@ static void disas_cond_b_imm(DisasContext *s, uint3= 2_t insn) /* genuinely conditional branches */ TCGLabel *label_match =3D gen_new_label(); arm_gen_test_cc(cond, label_match); - gen_goto_tb(s, 0, s->base.pc_next); + gen_goto_tb(s, 0, 4); gen_set_label(label_match); - gen_goto_tb(s, 1, addr); + gen_goto_tb(s, 1, diff); } else { /* 0xe and 0xf are both "always" conditions */ - gen_goto_tb(s, 0, addr); + gen_goto_tb(s, 0, diff); } } =20 @@ -1629,7 +1631,7 @@ static void handle_sync(DisasContext *s, uint32_t ins= n, * any pending interrupts immediately. */ reset_btype(s); - gen_goto_tb(s, 0, s->base.pc_next); + gen_goto_tb(s, 0, 4); return; =20 case 7: /* SB */ @@ -1641,7 +1643,7 @@ static void handle_sync(DisasContext *s, uint32_t ins= n, * MB and end the TB instead. */ tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC); - gen_goto_tb(s, 0, s->base.pc_next); + gen_goto_tb(s, 0, 4); return; =20 default: @@ -14947,7 +14949,7 @@ static void aarch64_tr_tb_stop(DisasContextBase *dc= base, CPUState *cpu) switch (dc->base.is_jmp) { case DISAS_NEXT: case DISAS_TOO_MANY: - gen_goto_tb(dc, 1, dc->base.pc_next); + gen_goto_tb(dc, 1, 4); break; default: case DISAS_UPDATE_EXIT: diff --git a/target/arm/translate.c b/target/arm/translate.c index 5752b7af5c..ae30c26ca4 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -2590,8 +2590,10 @@ static void gen_goto_ptr(void) * cpu_loop_exec. Any live exit_requests will be processed as we * enter the next TB. */ -static void gen_goto_tb(DisasContext *s, int n, target_ulong dest) +static void gen_goto_tb(DisasContext *s, int n, int diff) { + target_ulong dest =3D s->pc_curr + diff; + if (translator_use_goto_tb(&s->base, dest)) { tcg_gen_goto_tb(n); gen_set_pc_im(s, dest); @@ -2625,7 +2627,7 @@ static inline void gen_jmp_tb(DisasContext *s, uint32= _t dest, int tbno) * gen_jmp(); * on the second call to gen_jmp(). */ - gen_goto_tb(s, tbno, dest); + gen_goto_tb(s, tbno, dest - s->pc_curr); break; case DISAS_UPDATE_NOCHAIN: case DISAS_UPDATE_EXIT: @@ -9793,7 +9795,7 @@ static void arm_tr_tb_stop(DisasContextBase *dcbase, = CPUState *cpu) switch (dc->base.is_jmp) { case DISAS_NEXT: case DISAS_TOO_MANY: - gen_goto_tb(dc, 1, dc->base.pc_next); + gen_goto_tb(dc, 1, curr_insn_len(dc)); break; case DISAS_UPDATE_NOCHAIN: gen_set_pc_im(dc, dc->base.pc_next); @@ -9845,7 +9847,7 @@ static void arm_tr_tb_stop(DisasContextBase *dcbase, = CPUState *cpu) gen_set_pc_im(dc, dc->base.pc_next); gen_singlestep_exception(dc); } else { - gen_goto_tb(dc, 1, dc->base.pc_next); + gen_goto_tb(dc, 1, curr_insn_len(dc)); } } } --=20 2.34.1