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From: Chinmay Rath <rathc@linux.vnet.ibm.com>
To: Nicholas Piggin <npiggin@gmail.com>,
	Chinmay Rath <rathc@linux.ibm.com>,
	qemu-ppc@nongnu.org, qemu-devel@nongnu.org
Cc: danielhb413@gmail.com, clg@kaod.org,
	richard.henderson@linaro.org, harshpb@linux.ibm.com,
	sbhat@linux.ibm.com
Subject: Re: [PATCH] target/ppc: Move floating-point arithmetic instructions to decodetree.
Date: Wed, 13 Mar 2024 17:22:22 +0530	[thread overview]
Message-ID: <a69ae066-defb-4a73-8867-bd582de04bf8@linux.vnet.ibm.com> (raw)
In-Reply-To: <CZRONZ09DV9X.22XWTY7M4VBHO@wheely>



On 3/12/24 15:31, Nicholas Piggin wrote:
> On Thu Mar 7, 2024 at 9:03 PM AEST, Chinmay Rath wrote:
>> diff --git a/target/ppc/translate/fp-impl.c.inc b/target/ppc/translate/fp-impl.c.inc
>> index 189cd8c979..03b84ba79b 100644
>> --- a/target/ppc/translate/fp-impl.c.inc
>> +++ b/target/ppc/translate/fp-impl.c.inc
>> @@ -30,96 +30,73 @@ static void gen_set_cr1_from_fpscr(DisasContext *ctx)
>>   #endif
>>   
>>   /***                       Floating-Point arithmetic                       ***/
>> -#define _GEN_FLOAT_ACB(name, op1, op2, set_fprf, type)                        \
>> -static void gen_f##name(DisasContext *ctx)                                    \
>> -{                                                                             \
>> -    TCGv_i64 t0;                                                              \
>> -    TCGv_i64 t1;                                                              \
>> -    TCGv_i64 t2;                                                              \
>> -    TCGv_i64 t3;                                                              \
>> -    if (unlikely(!ctx->fpu_enabled)) {                                        \
>> -        gen_exception(ctx, POWERPC_EXCP_FPU);                                 \
>> -        return;                                                               \
>> -    }                                                                         \
>> -    t0 = tcg_temp_new_i64();                                                  \
>> -    t1 = tcg_temp_new_i64();                                                  \
>> -    t2 = tcg_temp_new_i64();                                                  \
>> -    t3 = tcg_temp_new_i64();                                                  \
>> -    gen_reset_fpstatus();                                                     \
>> -    get_fpr(t0, rA(ctx->opcode));                                             \
>> -    get_fpr(t1, rC(ctx->opcode));                                             \
>> -    get_fpr(t2, rB(ctx->opcode));                                             \
>> -    gen_helper_f##name(t3, tcg_env, t0, t1, t2);                              \
>> -    set_fpr(rD(ctx->opcode), t3);                                             \
>> -    if (set_fprf) {                                                           \
>> -        gen_compute_fprf_float64(t3);                                         \
>> -    }                                                                         \
>> -    if (unlikely(Rc(ctx->opcode) != 0)) {                                     \
>> -        gen_set_cr1_from_fpscr(ctx);                                          \
>> -    }                                                                         \
>> +static bool do_helper_acb(DisasContext *ctx, arg_A *a,
>> +                          void (*helper)(TCGv_i64, TCGv_ptr, TCGv_i64,
>> +                                         TCGv_i64, TCGv_i64))
>> +{
>> +    REQUIRE_INSNS_FLAGS(ctx, FLOAT);
>> +    REQUIRE_FPU(ctx);
>> +    TCGv_i64 t0, t1, t2, t3;
> Existing style prefers the variable declarations first I think.
>
>> +    t0 = tcg_temp_new_i64();
>> +    t1 = tcg_temp_new_i64();
>> +    t2 = tcg_temp_new_i64();
>> +    t3 = tcg_temp_new_i64();
>> +    gen_reset_fpstatus();
>> +    get_fpr(t0, a->fra);
>> +    get_fpr(t1, a->frc);
>> +    get_fpr(t2, a->frb);
>> +    helper(t3, tcg_env, t0, t1, t2);
>> +    set_fpr(a->frt, t3);
>> +    gen_compute_fprf_float64(t3);
>> +    if (unlikely(a->rc != false)) {
> This reads better without the double negative. I.e., just
>    if (unlikely(a->rc)) {
>
> Otherwise the decodetree parts look good, with those updated
> and split out from the helper generation:
>
> Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Thanks Nick, I shall post v2 with suggested updates.

Regards,
Chinmay
>
> Thanks,
> Nick
>
>> +        gen_set_cr1_from_fpscr(ctx);
>> +    }
>> +    return true;
>>   }
>
>>   
>> -#define GEN_FLOAT_ACB(name, op2, set_fprf, type)                              \
>> -_GEN_FLOAT_ACB(name, 0x3F, op2, set_fprf, type);                              \
>> -_GEN_FLOAT_ACB(name##s, 0x3B, op2, set_fprf, type);
>> -
>> -#define _GEN_FLOAT_AB(name, op1, op2, inval, set_fprf, type)                  \
>> -static void gen_f##name(DisasContext *ctx)                                    \
>> -{                                                                             \
>> -    TCGv_i64 t0;                                                              \
>> -    TCGv_i64 t1;                                                              \
>> -    TCGv_i64 t2;                                                              \
>> -    if (unlikely(!ctx->fpu_enabled)) {                                        \
>> -        gen_exception(ctx, POWERPC_EXCP_FPU);                                 \
>> -        return;                                                               \
>> -    }                                                                         \
>> -    t0 = tcg_temp_new_i64();                                                  \
>> -    t1 = tcg_temp_new_i64();                                                  \
>> -    t2 = tcg_temp_new_i64();                                                  \
>> -    gen_reset_fpstatus();                                                     \
>> -    get_fpr(t0, rA(ctx->opcode));                                             \
>> -    get_fpr(t1, rB(ctx->opcode));                                             \
>> -    gen_helper_f##name(t2, tcg_env, t0, t1);                                  \
>> -    set_fpr(rD(ctx->opcode), t2);                                             \
>> -    if (set_fprf) {                                                           \
>> -        gen_compute_fprf_float64(t2);                                         \
>> -    }                                                                         \
>> -    if (unlikely(Rc(ctx->opcode) != 0)) {                                     \
>> -        gen_set_cr1_from_fpscr(ctx);                                          \
>> -    }                                                                         \
>> +static bool do_helper_ab(DisasContext *ctx, arg_A_tab *a,
>> +                         void (*helper)(TCGv_i64, TCGv_ptr, TCGv_i64,
>> +                                        TCGv_i64))
>> +{
>> +    REQUIRE_INSNS_FLAGS(ctx, FLOAT);
>> +    REQUIRE_FPU(ctx);
>> +    TCGv_i64 t0, t1, t2;
>> +    t0 = tcg_temp_new_i64();
>> +    t1 = tcg_temp_new_i64();
>> +    t2 = tcg_temp_new_i64();
>> +    gen_reset_fpstatus();
>> +    get_fpr(t0, a->fra);
>> +    get_fpr(t1, a->frb);
>> +    helper(t2, tcg_env, t0, t1);
>> +    set_fpr(a->frt, t2);
>> +    gen_compute_fprf_float64(t2);
>> +    if (unlikely(a->rc) != false) {
>> +        gen_set_cr1_from_fpscr(ctx);
>> +    }
>> +    return true;
>>   }
>> -#define GEN_FLOAT_AB(name, op2, inval, set_fprf, type)                        \
>> -_GEN_FLOAT_AB(name, 0x3F, op2, inval, set_fprf, type);                        \
>> -_GEN_FLOAT_AB(name##s, 0x3B, op2, inval, set_fprf, type);
>>   
>> -#define _GEN_FLOAT_AC(name, op1, op2, inval, set_fprf, type)                  \
>> -static void gen_f##name(DisasContext *ctx)                                    \
>> -{                                                                             \
>> -    TCGv_i64 t0;                                                              \
>> -    TCGv_i64 t1;                                                              \
>> -    TCGv_i64 t2;                                                              \
>> -    if (unlikely(!ctx->fpu_enabled)) {                                        \
>> -        gen_exception(ctx, POWERPC_EXCP_FPU);                                 \
>> -        return;                                                               \
>> -    }                                                                         \
>> -    t0 = tcg_temp_new_i64();                                                  \
>> -    t1 = tcg_temp_new_i64();                                                  \
>> -    t2 = tcg_temp_new_i64();                                                  \
>> -    gen_reset_fpstatus();                                                     \
>> -    get_fpr(t0, rA(ctx->opcode));                                             \
>> -    get_fpr(t1, rC(ctx->opcode));                                             \
>> -    gen_helper_f##name(t2, tcg_env, t0, t1);                                  \
>> -    set_fpr(rD(ctx->opcode), t2);                                             \
>> -    if (set_fprf) {                                                           \
>> -        gen_compute_fprf_float64(t2);                                         \
>> -    }                                                                         \
>> -    if (unlikely(Rc(ctx->opcode) != 0)) {                                     \
>> -        gen_set_cr1_from_fpscr(ctx);                                          \
>> -    }                                                                         \
>> +static bool do_helper_ac(DisasContext *ctx, arg_A_tac *a,
>> +                         void (*helper)(TCGv_i64, TCGv_ptr, TCGv_i64,
>> +                                        TCGv_i64))
>> +{
>> +    REQUIRE_INSNS_FLAGS(ctx, FLOAT);
>> +    REQUIRE_FPU(ctx);
>> +    TCGv_i64 t0, t1, t2;
>> +    t0 = tcg_temp_new_i64();
>> +    t1 = tcg_temp_new_i64();
>> +    t2 = tcg_temp_new_i64();
>> +    gen_reset_fpstatus();
>> +    get_fpr(t0, a->fra);
>> +    get_fpr(t1, a->frc);
>> +    helper(t2, tcg_env, t0, t1);
>> +    set_fpr(a->frt, t2);
>> +    gen_compute_fprf_float64(t2);
>> +    if (unlikely(a->rc) != false) {
>> +        gen_set_cr1_from_fpscr(ctx);
>> +    }
>> +    return true;
>>   }
>> -#define GEN_FLOAT_AC(name, op2, inval, set_fprf, type)                        \
>> -_GEN_FLOAT_AC(name, 0x3F, op2, inval, set_fprf, type);                        \
>> -_GEN_FLOAT_AC(name##s, 0x3B, op2, inval, set_fprf, type);
>>   
>>   #define GEN_FLOAT_B(name, op2, op3, set_fprf, type)                           \
>>   static void gen_f##name(DisasContext *ctx)                                    \
>> @@ -145,64 +122,22 @@ static void gen_f##name(DisasContext *ctx)                                    \
>>       }                                                                         \
>>   }
>>   
>> -#define GEN_FLOAT_BS(name, op1, op2, set_fprf, type)                          \
>> -static void gen_f##name(DisasContext *ctx)                                    \
>> -{                                                                             \
>> -    TCGv_i64 t0;                                                              \
>> -    TCGv_i64 t1;                                                              \
>> -    if (unlikely(!ctx->fpu_enabled)) {                                        \
>> -        gen_exception(ctx, POWERPC_EXCP_FPU);                                 \
>> -        return;                                                               \
>> -    }                                                                         \
>> -    t0 = tcg_temp_new_i64();                                                  \
>> -    t1 = tcg_temp_new_i64();                                                  \
>> -    gen_reset_fpstatus();                                                     \
>> -    get_fpr(t0, rB(ctx->opcode));                                             \
>> -    gen_helper_f##name(t1, tcg_env, t0);                                      \
>> -    set_fpr(rD(ctx->opcode), t1);                                             \
>> -    if (set_fprf) {                                                           \
>> -        gen_compute_fprf_float64(t1);                                         \
>> -    }                                                                         \
>> -    if (unlikely(Rc(ctx->opcode) != 0)) {                                     \
>> -        gen_set_cr1_from_fpscr(ctx);                                          \
>> -    }                                                                         \
>> -}
>> -
>> -/* fadd - fadds */
>> -GEN_FLOAT_AB(add, 0x15, 0x000007C0, 1, PPC_FLOAT);
>> -/* fdiv - fdivs */
>> -GEN_FLOAT_AB(div, 0x12, 0x000007C0, 1, PPC_FLOAT);
>> -/* fmul - fmuls */
>> -GEN_FLOAT_AC(mul, 0x19, 0x0000F800, 1, PPC_FLOAT);
>> -
>> -/* fre */
>> -GEN_FLOAT_BS(re, 0x3F, 0x18, 1, PPC_FLOAT_EXT);
>> -
>> -/* fres */
>> -GEN_FLOAT_BS(res, 0x3B, 0x18, 1, PPC_FLOAT_FRES);
>> -
>> -/* frsqrte */
>> -GEN_FLOAT_BS(rsqrte, 0x3F, 0x1A, 1, PPC_FLOAT_FRSQRTE);
>> -
>> -/* frsqrtes */
>> -static void gen_frsqrtes(DisasContext *ctx)
>> +static bool do_helper_bs(DisasContext *ctx, arg_A_tb *a,
>> +                         void (*helper)(TCGv_i64, TCGv_ptr, TCGv_i64))
>>   {
>> -    TCGv_i64 t0;
>> -    TCGv_i64 t1;
>> -    if (unlikely(!ctx->fpu_enabled)) {
>> -        gen_exception(ctx, POWERPC_EXCP_FPU);
>> -        return;
>> -    }
>> +    REQUIRE_FPU(ctx);
>> +    TCGv_i64 t0, t1;
>>       t0 = tcg_temp_new_i64();
>>       t1 = tcg_temp_new_i64();
>>       gen_reset_fpstatus();
>> -    get_fpr(t0, rB(ctx->opcode));
>> -    gen_helper_frsqrtes(t1, tcg_env, t0);
>> -    set_fpr(rD(ctx->opcode), t1);
>> +    get_fpr(t0, a->frb);
>> +    helper(t1, tcg_env, t0);
>> +    set_fpr(a->frt, t1);
>>       gen_compute_fprf_float64(t1);
>> -    if (unlikely(Rc(ctx->opcode) != 0)) {
>> +    if (unlikely(a->rc != false)) {
>>           gen_set_cr1_from_fpscr(ctx);
>>       }
>> +    return true;
>>   }
>>   
>>   static bool trans_FSEL(DisasContext *ctx, arg_A *a)
>> @@ -228,10 +163,6 @@ static bool trans_FSEL(DisasContext *ctx, arg_A *a)
>>       return true;
>>   }
>>   
>> -/* fsub - fsubs */
>> -GEN_FLOAT_AB(sub, 0x14, 0x000007C0, 1, PPC_FLOAT);
>> -/* Optional: */
>> -
>>   static bool do_helper_fsqrt(DisasContext *ctx, arg_A_tb *a,
>>                               void (*helper)(TCGv_i64, TCGv_ptr, TCGv_i64))
>>   {
>> @@ -254,19 +185,33 @@ static bool do_helper_fsqrt(DisasContext *ctx, arg_A_tb *a,
>>       return true;
>>   }
>>   
>> +TRANS(FADD, do_helper_ab, gen_helper_FADD);
>> +TRANS(FADDS, do_helper_ab, gen_helper_FADDS);
>> +TRANS(FSUB, do_helper_ab, gen_helper_FSUB);
>> +TRANS(FSUBS, do_helper_ab, gen_helper_FSUBS);
>> +TRANS(FDIV, do_helper_ab, gen_helper_FDIV);
>> +TRANS(FDIVS, do_helper_ab, gen_helper_FDIVS);
>> +TRANS(FMUL, do_helper_ac, gen_helper_FMUL);
>> +TRANS(FMULS, do_helper_ac, gen_helper_FMULS);
>> +
>> +TRANS(FMADD, do_helper_acb, gen_helper_FMADD);
>> +TRANS(FMADDS, do_helper_acb, gen_helper_FMADDS);
>> +TRANS(FMSUB, do_helper_acb, gen_helper_FMSUB);
>> +TRANS(FMSUBS, do_helper_acb, gen_helper_FMSUBS);
>> +
>> +TRANS(FNMADD, do_helper_acb, gen_helper_FNMADD);
>> +TRANS(FNMADDS, do_helper_acb, gen_helper_FNMADDS);
>> +TRANS(FNMSUB, do_helper_acb, gen_helper_FNMSUB);
>> +TRANS(FNMSUBS, do_helper_acb, gen_helper_FNMSUBS);
>> +
>> +TRANS_FLAGS(FLOAT_EXT, FRE, do_helper_bs, gen_helper_FRE);
>> +TRANS_FLAGS(FLOAT_FRES, FRES, do_helper_bs, gen_helper_FRES);
>> +TRANS_FLAGS(FLOAT_FRSQRTE, FRSQRTE, do_helper_bs, gen_helper_FRSQRTE);
>> +TRANS_FLAGS(FLOAT_FRSQRTES, FRSQRTES, do_helper_bs, gen_helper_FRSQRTES);
>> +
>>   TRANS(FSQRT, do_helper_fsqrt, gen_helper_FSQRT);
>>   TRANS(FSQRTS, do_helper_fsqrt, gen_helper_FSQRTS);
>>   
>> -/***                     Floating-Point multiply-and-add                   ***/
>> -/* fmadd - fmadds */
>> -GEN_FLOAT_ACB(madd, 0x1D, 1, PPC_FLOAT);
>> -/* fmsub - fmsubs */
>> -GEN_FLOAT_ACB(msub, 0x1C, 1, PPC_FLOAT);
>> -/* fnmadd - fnmadds */
>> -GEN_FLOAT_ACB(nmadd, 0x1F, 1, PPC_FLOAT);
>> -/* fnmsub - fnmsubs */
>> -GEN_FLOAT_ACB(nmsub, 0x1E, 1, PPC_FLOAT);
>> -
>>   /***                     Floating-Point round & convert                    ***/
>>   /* fctiw */
>>   GEN_FLOAT_B(ctiw, 0x0E, 0x00, 0, PPC_FLOAT);
>> @@ -304,35 +249,29 @@ GEN_FLOAT_B(rip, 0x08, 0x0E, 1, PPC_FLOAT_EXT);
>>   /* frim */
>>   GEN_FLOAT_B(rim, 0x08, 0x0F, 1, PPC_FLOAT_EXT);
>>   
>> -static void gen_ftdiv(DisasContext *ctx)
>> +static bool trans_FTDIV(DisasContext *ctx, arg_X_bf *a)
>>   {
>> -    TCGv_i64 t0;
>> -    TCGv_i64 t1;
>> -    if (unlikely(!ctx->fpu_enabled)) {
>> -        gen_exception(ctx, POWERPC_EXCP_FPU);
>> -        return;
>> -    }
>> +    REQUIRE_INSNS_FLAGS2(ctx, FP_TST_ISA206);
>> +    REQUIRE_FPU(ctx);
>> +    TCGv_i64 t0, t1;
>>       t0 = tcg_temp_new_i64();
>>       t1 = tcg_temp_new_i64();
>> -    get_fpr(t0, rA(ctx->opcode));
>> -    get_fpr(t1, rB(ctx->opcode));
>> -    gen_helper_ftdiv(cpu_crf[crfD(ctx->opcode)], t0, t1);
>> +    get_fpr(t0, a->ra);
>> +    get_fpr(t1, a->rb);
>> +    gen_helper_FTDIV(cpu_crf[a->bf], t0, t1);
>> +    return true;
>>   }
>>   
>> -static void gen_ftsqrt(DisasContext *ctx)
>> +static bool trans_FTSQRT(DisasContext *ctx, arg_X_bf_b *a)
>>   {
>> -    TCGv_i64 t0;
>> -    if (unlikely(!ctx->fpu_enabled)) {
>> -        gen_exception(ctx, POWERPC_EXCP_FPU);
>> -        return;
>> -    }
>> -    t0 = tcg_temp_new_i64();
>> -    get_fpr(t0, rB(ctx->opcode));
>> -    gen_helper_ftsqrt(cpu_crf[crfD(ctx->opcode)], t0);
>> +    REQUIRE_INSNS_FLAGS2(ctx, FP_TST_ISA206);
>> +    REQUIRE_FPU(ctx);
>> +    TCGv_i64 t0 = tcg_temp_new_i64();
>> +    get_fpr(t0, a->rb);
>> +    gen_helper_FTSQRT(cpu_crf[a->bf], t0);
>> +    return true;
>>   }
>>   
>> -
>> -
>>   /***                         Floating-Point compare                        ***/
>>   
>>   /* fcmpo */
>> @@ -1111,14 +1050,7 @@ TRANS(STFDX, do_lsfp_X, false, true, false)
>>   TRANS(STFDUX, do_lsfp_X, true, true, false)
>>   TRANS(PSTFD, do_lsfp_PLS_D, false, true, false)
>>   
>> -#undef _GEN_FLOAT_ACB
>> -#undef GEN_FLOAT_ACB
>> -#undef _GEN_FLOAT_AB
>> -#undef GEN_FLOAT_AB
>> -#undef _GEN_FLOAT_AC
>> -#undef GEN_FLOAT_AC
>>   #undef GEN_FLOAT_B
>> -#undef GEN_FLOAT_BS
>>   
>>   #undef GEN_LDF
>>   #undef GEN_LDUF
>> diff --git a/target/ppc/translate/fp-ops.c.inc b/target/ppc/translate/fp-ops.c.inc
>> index d4c6c4bed1..cef4b5dfcb 100644
>> --- a/target/ppc/translate/fp-ops.c.inc
>> +++ b/target/ppc/translate/fp-ops.c.inc
>> @@ -1,36 +1,6 @@
>> -#define _GEN_FLOAT_ACB(name, op, op1, op2, isfloat, set_fprf, type)           \
>> -GEN_HANDLER(f##name, op1, op2, 0xFF, 0x00000000, type)
>> -#define GEN_FLOAT_ACB(name, op2, set_fprf, type)                              \
>> -_GEN_FLOAT_ACB(name, name, 0x3F, op2, 0, set_fprf, type),                     \
>> -_GEN_FLOAT_ACB(name##s, name, 0x3B, op2, 1, set_fprf, type)
>> -#define _GEN_FLOAT_AB(name, op, op1, op2, inval, isfloat, set_fprf, type)     \
>> -GEN_HANDLER(f##name, op1, op2, 0xFF, inval, type)
>> -#define GEN_FLOAT_AB(name, op2, inval, set_fprf, type)                        \
>> -_GEN_FLOAT_AB(name, name, 0x3F, op2, inval, 0, set_fprf, type),               \
>> -_GEN_FLOAT_AB(name##s, name, 0x3B, op2, inval, 1, set_fprf, type)
>> -#define _GEN_FLOAT_AC(name, op, op1, op2, inval, isfloat, set_fprf, type)     \
>> -GEN_HANDLER(f##name, op1, op2, 0xFF, inval, type)
>> -#define GEN_FLOAT_AC(name, op2, inval, set_fprf, type)                        \
>> -_GEN_FLOAT_AC(name, name, 0x3F, op2, inval, 0, set_fprf, type),               \
>> -_GEN_FLOAT_AC(name##s, name, 0x3B, op2, inval, 1, set_fprf, type)
>>   #define GEN_FLOAT_B(name, op2, op3, set_fprf, type)                           \
>>   GEN_HANDLER(f##name, 0x3F, op2, op3, 0x001F0000, type)
>> -#define GEN_FLOAT_BS(name, op1, op2, set_fprf, type)                          \
>> -GEN_HANDLER(f##name, op1, op2, 0xFF, 0x001F07C0, type)
>>   
>> -GEN_FLOAT_AB(add, 0x15, 0x000007C0, 1, PPC_FLOAT),
>> -GEN_FLOAT_AB(div, 0x12, 0x000007C0, 1, PPC_FLOAT),
>> -GEN_FLOAT_AC(mul, 0x19, 0x0000F800, 1, PPC_FLOAT),
>> -GEN_FLOAT_BS(re, 0x3F, 0x18, 1, PPC_FLOAT_EXT),
>> -GEN_FLOAT_BS(res, 0x3B, 0x18, 1, PPC_FLOAT_FRES),
>> -GEN_FLOAT_BS(rsqrte, 0x3F, 0x1A, 1, PPC_FLOAT_FRSQRTE),
>> -GEN_FLOAT_AB(sub, 0x14, 0x000007C0, 1, PPC_FLOAT),
>> -GEN_FLOAT_ACB(madd, 0x1D, 1, PPC_FLOAT),
>> -GEN_FLOAT_ACB(msub, 0x1C, 1, PPC_FLOAT),
>> -GEN_FLOAT_ACB(nmadd, 0x1F, 1, PPC_FLOAT),
>> -GEN_FLOAT_ACB(nmsub, 0x1E, 1, PPC_FLOAT),
>> -GEN_HANDLER_E(ftdiv, 0x3F, 0x00, 0x04, 1, PPC_NONE, PPC2_FP_TST_ISA206),
>> -GEN_HANDLER_E(ftsqrt, 0x3F, 0x00, 0x05, 1, PPC_NONE, PPC2_FP_TST_ISA206),
>>   GEN_FLOAT_B(ctiw, 0x0E, 0x00, 0, PPC_FLOAT),
>>   GEN_HANDLER_E(fctiwu, 0x3F, 0x0E, 0x04, 0, PPC_NONE, PPC2_FP_CVT_ISA206),
>>   GEN_FLOAT_B(ctiwz, 0x0F, 0x00, 0, PPC_FLOAT),
>> @@ -61,7 +31,6 @@ GEN_STXF(stfiw, st32fiw, 0x17, 0x1E, PPC_FLOAT_STFIWX)
>>   GEN_HANDLER_E(stfdepx, 0x1F, 0x1F, 0x16, 0x00000001, PPC_NONE, PPC2_BOOKE206),
>>   GEN_HANDLER_E(stfdpx, 0x1F, 0x17, 0x1C, 0x00200001, PPC_NONE, PPC2_ISA205),
>>   
>> -GEN_HANDLER(frsqrtes, 0x3B, 0x1A, 0xFF, 0x001F07C0, PPC_FLOAT_FRSQRTES),
>>   GEN_HANDLER(fcmpo, 0x3F, 0x00, 0x01, 0x00600001, PPC_FLOAT),
>>   GEN_HANDLER(fcmpu, 0x3F, 0x00, 0x00, 0x00600001, PPC_FLOAT),
>>   GEN_HANDLER(fabs, 0x3F, 0x08, 0x08, 0x001F0000, PPC_FLOAT),
>



      reply	other threads:[~2024-03-13 11:53 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-07 11:03 [PATCH] target/ppc: Move floating-point arithmetic instructions to decodetree Chinmay Rath
2024-03-12  9:36 ` Nicholas Piggin
2024-03-12 14:01   ` Richard Henderson
2024-03-12 14:24     ` Nicholas Piggin
2024-03-12 14:29       ` Peter Maydell
2024-03-13  5:28         ` Nicholas Piggin
2024-03-13 11:50         ` Chinmay Rath
2024-03-12 14:45       ` Richard Henderson
2024-03-12 10:01 ` Nicholas Piggin
2024-03-13 11:52   ` Chinmay Rath [this message]

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