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envelope-from=harshpb@linux.ibm.com; helo=mx0b-001b2d01.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_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: "Mukesh Kumar Chaurasiya (IBM)" Move slw and srw to decodetree specification using the @X_rc format. The existing shift-masking logic from gen_slw/gen_srw is preserved verbatim in the new trans_SLW/trans_SRW handlers. Signed-off-by: Mukesh Kumar Chaurasiya (IBM) Reviewed-by: Glenn Miles Reviewed-by: Amit Machhiwal Signed-off-by: Chinmay Rath Tested-by: Aniket Sahu Link: https://lore.kernel.org/qemu-devel/20260827133010.278889-8-rathc@linux.ibm.com Signed-off-by: Harsh Prateek Bora --- target/ppc/insn32.decode | 5 +++ target/ppc/translate.c | 49 ---------------------- target/ppc/translate/fixedpoint-impl.c.inc | 48 +++++++++++++++++++++ 3 files changed, 53 insertions(+), 49 deletions(-) diff --git a/target/ppc/insn32.decode b/target/ppc/insn32.decode index 824181eb4e..189f9c6fe7 100644 --- a/target/ppc/insn32.decode +++ b/target/ppc/insn32.decode @@ -505,6 +505,11 @@ HASHCHK 011111 ..... ..... ..... 1011110010 . @X_DW HASHSTP 011111 ..... ..... ..... 1010010010 . @X_DW HASHCHKP 011111 ..... ..... ..... 1010110010 . @X_DW +# Fixed-Point Shift Instructions + +SLW 011111 ..... ..... ..... 0000011000 . @X_rc +SRW 011111 ..... ..... ..... 1000011000 . @X_rc + ## BCD Assist ADDG6S 011111 ..... ..... ..... - 001001010 - @X diff --git a/target/ppc/translate.c b/target/ppc/translate.c index 821363e7fb..3d26e1144e 100644 --- a/target/ppc/translate.c +++ b/target/ppc/translate.c @@ -2315,29 +2315,6 @@ GEN_PPC64_R4(rldimi, 0x1E, 0x06); /*** Integer shift ***/ -/* slw & slw. */ -static void gen_slw(DisasContext *ctx) -{ - TCGv t0, t1; - - t0 = tcg_temp_new(); - /* AND rS with a mask that is 0 when rB >= 0x20 */ -#if defined(TARGET_PPC64) - tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x3a); - tcg_gen_sari_tl(t0, t0, 0x3f); -#else - tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x1a); - tcg_gen_sari_tl(t0, t0, 0x1f); -#endif - tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0); - t1 = tcg_temp_new(); - tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x1f); - tcg_gen_shl_tl(cpu_gpr[rA(ctx->opcode)], t0, t1); - tcg_gen_ext32u_tl(cpu_gpr[rA(ctx->opcode)], cpu_gpr[rA(ctx->opcode)]); - if (unlikely(Rc(ctx->opcode) != 0)) { - gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]); - } -} /* sraw & sraw. */ static void gen_sraw(DisasContext *ctx) @@ -2379,30 +2356,6 @@ static void gen_srawi(DisasContext *ctx) } } -/* srw & srw. */ -static void gen_srw(DisasContext *ctx) -{ - TCGv t0, t1; - - t0 = tcg_temp_new(); - /* AND rS with a mask that is 0 when rB >= 0x20 */ -#if defined(TARGET_PPC64) - tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x3a); - tcg_gen_sari_tl(t0, t0, 0x3f); -#else - tcg_gen_shli_tl(t0, cpu_gpr[rB(ctx->opcode)], 0x1a); - tcg_gen_sari_tl(t0, t0, 0x1f); -#endif - tcg_gen_andc_tl(t0, cpu_gpr[rS(ctx->opcode)], t0); - tcg_gen_ext32u_tl(t0, t0); - t1 = tcg_temp_new(); - tcg_gen_andi_tl(t1, cpu_gpr[rB(ctx->opcode)], 0x1f); - tcg_gen_shr_tl(cpu_gpr[rA(ctx->opcode)], t0, t1); - if (unlikely(Rc(ctx->opcode) != 0)) { - gen_set_Rc0(ctx, cpu_gpr[rA(ctx->opcode)]); - } -} - #if defined(TARGET_PPC64) /* sld & sld. */ static void gen_sld(DisasContext *ctx) @@ -5764,10 +5717,8 @@ GEN_HANDLER_E(paste, 0x1F, 0x06, 0x1C, 0x03C00000, PPC_NONE, PPC2_ISA300), GEN_HANDLER(rlwimi, 0x14, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), GEN_HANDLER(rlwinm, 0x15, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), GEN_HANDLER(rlwnm, 0x17, 0xFF, 0xFF, 0x00000000, PPC_INTEGER), -GEN_HANDLER(slw, 0x1F, 0x18, 0x00, 0x00000000, PPC_INTEGER), GEN_HANDLER(sraw, 0x1F, 0x18, 0x18, 0x00000000, PPC_INTEGER), GEN_HANDLER(srawi, 0x1F, 0x18, 0x19, 0x00000000, PPC_INTEGER), -GEN_HANDLER(srw, 0x1F, 0x18, 0x10, 0x00000000, PPC_INTEGER), #if defined(TARGET_PPC64) GEN_HANDLER(sld, 0x1F, 0x1B, 0x00, 0x00000000, PPC_64B), GEN_HANDLER(srad, 0x1F, 0x1A, 0x18, 0x00000000, PPC_64B), diff --git a/target/ppc/translate/fixedpoint-impl.c.inc b/target/ppc/translate/fixedpoint-impl.c.inc index 91f9c6c391..9d04b96316 100644 --- a/target/ppc/translate/fixedpoint-impl.c.inc +++ b/target/ppc/translate/fixedpoint-impl.c.inc @@ -1406,3 +1406,51 @@ TRANS(HASHST, do_hash, false, gen_helper_HASHST) TRANS(HASHCHK, do_hash, false, gen_helper_HASHCHK) TRANS(HASHSTP, do_hash, true, gen_helper_HASHSTP) TRANS(HASHCHKP, do_hash, true, gen_helper_HASHCHKP) + +static bool trans_SLW(DisasContext *ctx, arg_SLW *a) +{ + TCGv t0, t1; + + t0 = tcg_temp_new(); + /* AND rt with a mask that is 0 when rB >= 0x20 */ +#if defined(TARGET_PPC64) + tcg_gen_shli_tl(t0, cpu_gpr[a->rb], 0x3a); + tcg_gen_sari_tl(t0, t0, 0x3f); +#else + tcg_gen_shli_tl(t0, cpu_gpr[a->rb], 0x1a); + tcg_gen_sari_tl(t0, t0, 0x1f); +#endif + tcg_gen_andc_tl(t0, cpu_gpr[a->rt], t0); + t1 = tcg_temp_new(); + tcg_gen_andi_tl(t1, cpu_gpr[a->rb], 0x1f); + tcg_gen_shl_tl(cpu_gpr[a->ra], t0, t1); + tcg_gen_ext32u_tl(cpu_gpr[a->ra], cpu_gpr[a->ra]); + if (unlikely(a->rc)) { + gen_set_Rc0(ctx, cpu_gpr[a->ra]); + } + return true; +} + +static bool trans_SRW(DisasContext *ctx, arg_SRW *a) +{ + TCGv t0, t1; + + t0 = tcg_temp_new(); + /* AND rt with a mask that is 0 when rB >= 0x20 */ +#if defined(TARGET_PPC64) + tcg_gen_shli_tl(t0, cpu_gpr[a->rb], 0x3a); + tcg_gen_sari_tl(t0, t0, 0x3f); +#else + tcg_gen_shli_tl(t0, cpu_gpr[a->rb], 0x1a); + tcg_gen_sari_tl(t0, t0, 0x1f); +#endif + tcg_gen_andc_tl(t0, cpu_gpr[a->rt], t0); + tcg_gen_ext32u_tl(t0, t0); + t1 = tcg_temp_new(); + tcg_gen_andi_tl(t1, cpu_gpr[a->rb], 0x1f); + tcg_gen_shr_tl(cpu_gpr[a->ra], t0, t1); + if (unlikely(a->rc)) { + gen_set_Rc0(ctx, cpu_gpr[a->ra]); + } + return true; +} -- 2.52.0