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Re: [Qemu-ppc] [Qemu-devel] [PATCH] PPC: Fix compilation with TCG debug


From: Alexander Graf
Subject: Re: [Qemu-ppc] [Qemu-devel] [PATCH] PPC: Fix compilation with TCG debug
Date: Sun, 22 Dec 2013 18:16:44 +0100

On 22.12.2013, at 17:37, Aurelien Jarno <address@hidden> wrote:

> On Fri, Dec 20, 2013 at 11:01:50AM +0100, Alexander Graf wrote:
>> The recent VSX patches broken compilation of QEMU when configurated
>> with --enable-debug, as it was treating "target long" TCG variables
>> as "i64" which is not true for 32bit targets.
>> 
>> This patch fixes all the places that the compiler has found to use
>> the correct variable type and if necessary manually cast.
>> 
>> Reported-by: Stefan Weil <address@hidden>
>> Signed-off-by: Alexander Graf <address@hidden>
>> ---
>> target-ppc/translate.c | 143 
>> ++++++++++++++++++++++++++++---------------------
>> 1 file changed, 81 insertions(+), 62 deletions(-)
>> 
>> diff --git a/target-ppc/translate.c b/target-ppc/translate.c
>> index ea58dc9..c5c1108 100644
>> --- a/target-ppc/translate.c
>> +++ b/target-ppc/translate.c
>> @@ -2567,6 +2567,14 @@ static inline void gen_qemu_ld32u(DisasContext *ctx, 
>> TCGv arg1, TCGv arg2)
>>     }
>> }
>> 
>> +static void gen_qemu_ld32u_i64(DisasContext *ctx, TCGv_i64 val, TCGv addr)
>> +{
>> +    TCGv tmp = tcg_temp_new();
>> +    gen_qemu_ld32u(ctx, tmp, addr);
>> +    tcg_gen_extu_tl_i64(val, tmp);
>> +    tcg_temp_free(tmp);
>> +}
>> +
>> static inline void gen_qemu_ld32s(DisasContext *ctx, TCGv arg1, TCGv arg2)
>> {
>>     if (unlikely(ctx->le_mode)) {
>> @@ -2616,6 +2624,14 @@ static inline void gen_qemu_st32(DisasContext *ctx, 
>> TCGv arg1, TCGv arg2)
>>     }
>> }
>> 
>> +static void gen_qemu_st32_i64(DisasContext *ctx, TCGv_i64 val, TCGv addr)
>> +{
>> +    TCGv tmp = tcg_temp_new();
>> +    tcg_gen_trunc_i64_tl(tmp, val);
>> +    gen_qemu_st32(ctx, tmp, addr);
>> +    tcg_temp_free(tmp);
>> +}
>> +
>> static inline void gen_qemu_st64(DisasContext *ctx, TCGv_i64 arg1, TCGv arg2)
>> {
>>     if (unlikely(ctx->le_mode)) {
>> @@ -7048,13 +7064,14 @@ static void gen_lxvdsx(DisasContext *ctx)
>>     EA = tcg_temp_new();
>>     gen_addr_reg_index(ctx, EA);
>>     gen_qemu_ld64(ctx, cpu_vsrh(xT(ctx->opcode)), EA);
>> -    tcg_gen_mov_tl(cpu_vsrl(xT(ctx->opcode)), cpu_vsrh(xT(ctx->opcode)));
>> +    tcg_gen_mov_i64(cpu_vsrl(xT(ctx->opcode)), cpu_vsrh(xT(ctx->opcode)));
>>     tcg_temp_free(EA);
>> }
>> 
>> static void gen_lxvw4x(DisasContext *ctx)
>> {
>> -    TCGv EA, tmp;
>> +    TCGv EA;
>> +    TCGv_i64 tmp;
>>     TCGv_i64 xth = cpu_vsrh(xT(ctx->opcode));
>>     TCGv_i64 xtl = cpu_vsrl(xT(ctx->opcode));
>>     if (unlikely(!ctx->vsx_enabled)) {
>> @@ -7063,21 +7080,22 @@ static void gen_lxvw4x(DisasContext *ctx)
>>     }
>>     gen_set_access_type(ctx, ACCESS_INT);
>>     EA = tcg_temp_new();
>> -    tmp = tcg_temp_new();
>> +    tmp = tcg_temp_new_i64();
>> +
>>     gen_addr_reg_index(ctx, EA);
>> -    gen_qemu_ld32u(ctx, tmp, EA);
>> +    gen_qemu_ld32u_i64(ctx, tmp, EA);
>>     tcg_gen_addi_tl(EA, EA, 4);
>> -    gen_qemu_ld32u(ctx, xth, EA);
>> +    gen_qemu_ld32u_i64(ctx, xth, EA);
>>     tcg_gen_deposit_i64(xth, xth, tmp, 32, 32);
>> 
>>     tcg_gen_addi_tl(EA, EA, 4);
>> -    gen_qemu_ld32u(ctx, tmp, EA);
>> +    gen_qemu_ld32u_i64(ctx, tmp, EA);
>>     tcg_gen_addi_tl(EA, EA, 4);
>> -    gen_qemu_ld32u(ctx, xtl, EA);
>> +    gen_qemu_ld32u_i64(ctx, xtl, EA);
>>     tcg_gen_deposit_i64(xtl, xtl, tmp, 32, 32);
>> 
>>     tcg_temp_free(EA);
>> -    tcg_temp_free(tmp);
>> +    tcg_temp_free_i64(tmp);
>> }
>> 
>> static void gen_stxsdx(DisasContext *ctx)
>> @@ -7112,7 +7130,8 @@ static void gen_stxvd2x(DisasContext *ctx)
>> 
>> static void gen_stxvw4x(DisasContext *ctx)
>> {
>> -    TCGv EA, tmp;
>> +    TCGv_i64 tmp;
>> +    TCGv EA;
>>     if (unlikely(!ctx->vsx_enabled)) {
>>         gen_exception(ctx, POWERPC_EXCP_VSXU);
>>         return;
>> @@ -7120,21 +7139,21 @@ static void gen_stxvw4x(DisasContext *ctx)
>>     gen_set_access_type(ctx, ACCESS_INT);
>>     EA = tcg_temp_new();
>>     gen_addr_reg_index(ctx, EA);
>> -    tmp = tcg_temp_new();
>> +    tmp = tcg_temp_new_i64();
>> 
>>     tcg_gen_shri_i64(tmp, cpu_vsrh(xS(ctx->opcode)), 32);
>> -    gen_qemu_st32(ctx, tmp, EA);
>> +    gen_qemu_st32_i64(ctx, tmp, EA);
>>     tcg_gen_addi_tl(EA, EA, 4);
>> -    gen_qemu_st32(ctx, cpu_vsrh(xS(ctx->opcode)), EA);
>> +    gen_qemu_st32_i64(ctx, cpu_vsrh(xS(ctx->opcode)), EA);
>> 
>>     tcg_gen_shri_i64(tmp, cpu_vsrl(xS(ctx->opcode)), 32);
>>     tcg_gen_addi_tl(EA, EA, 4);
>> -    gen_qemu_st32(ctx, tmp, EA);
>> +    gen_qemu_st32_i64(ctx, tmp, EA);
>>     tcg_gen_addi_tl(EA, EA, 4);
>> -    gen_qemu_st32(ctx, cpu_vsrl(xS(ctx->opcode)), EA);
>> +    gen_qemu_st32_i64(ctx, cpu_vsrl(xS(ctx->opcode)), EA);
>> 
>>     tcg_temp_free(EA);
>> -    tcg_temp_free(tmp);
>> +    tcg_temp_free_i64(tmp);
>> }
>> 
>> static void gen_xxpermdi(DisasContext *ctx)
>> @@ -7171,8 +7190,8 @@ static void glue(gen_, name)(DisasContext * ctx)       
>>            \
>>             gen_exception(ctx, POWERPC_EXCP_VSXU);                \
>>             return;                                               \
>>         }                                                         \
>> -        xb = tcg_temp_new();                                      \
>> -        sgm = tcg_temp_new();                                     \
>> +        xb = tcg_temp_new_i64();                                  \
>> +        sgm = tcg_temp_new_i64();                                 \
>>         tcg_gen_mov_i64(xb, cpu_vsrh(xB(ctx->opcode)));           \
>>         tcg_gen_movi_i64(sgm, sgn_mask);                          \
>>         switch (op) {                                             \
>> @@ -7189,18 +7208,18 @@ static void glue(gen_, name)(DisasContext * ctx)     
>>              \
>>                 break;                                            \
>>             }                                                     \
>>             case OP_CPSGN: {                                      \
>> -                TCGv_i64 xa = tcg_temp_new();                     \
>> +                TCGv_i64 xa = tcg_temp_new_i64();                 \
>>                 tcg_gen_mov_i64(xa, cpu_vsrh(xA(ctx->opcode)));   \
>>                 tcg_gen_and_i64(xa, xa, sgm);                     \
>>                 tcg_gen_andc_i64(xb, xb, sgm);                    \
>>                 tcg_gen_or_i64(xb, xb, xa);                       \
>> -                tcg_temp_free(xa);                                \
>> +                tcg_temp_free_i64(xa);                            \
>>                 break;                                            \
>>             }                                                     \
>>         }                                                         \
>>         tcg_gen_mov_i64(cpu_vsrh(xT(ctx->opcode)), xb);           \
>> -        tcg_temp_free(xb);                                        \
>> -        tcg_temp_free(sgm);                                       \
>> +        tcg_temp_free_i64(xb);                                    \
>> +        tcg_temp_free_i64(sgm);                                   \
>>     }
>> 
>> VSX_SCALAR_MOVE(xsabsdp, OP_ABS, SGN_MASK_DP)
>> @@ -7216,9 +7235,9 @@ static void glue(gen_, name)(DisasContext * ctx)       
>>           \
>>             gen_exception(ctx, POWERPC_EXCP_VSXU);               \
>>             return;                                              \
>>         }                                                        \
>> -        xbh = tcg_temp_new();                                    \
>> -        xbl = tcg_temp_new();                                    \
>> -        sgm = tcg_temp_new();                                    \
>> +        xbh = tcg_temp_new_i64();                                \
>> +        xbl = tcg_temp_new_i64();                                \
>> +        sgm = tcg_temp_new_i64();                                \
>>         tcg_gen_mov_i64(xbh, cpu_vsrh(xB(ctx->opcode)));         \
>>         tcg_gen_mov_i64(xbl, cpu_vsrl(xB(ctx->opcode)));         \
>>         tcg_gen_movi_i64(sgm, sgn_mask);                         \
>> @@ -7239,8 +7258,8 @@ static void glue(gen_, name)(DisasContext * ctx)       
>>           \
>>                 break;                                           \
>>             }                                                    \
>>             case OP_CPSGN: {                                     \
>> -                TCGv_i64 xah = tcg_temp_new();                   \
>> -                TCGv_i64 xal = tcg_temp_new();                   \
>> +                TCGv_i64 xah = tcg_temp_new_i64();               \
>> +                TCGv_i64 xal = tcg_temp_new_i64();               \
>>                 tcg_gen_mov_i64(xah, cpu_vsrh(xA(ctx->opcode))); \
>>                 tcg_gen_mov_i64(xal, cpu_vsrl(xA(ctx->opcode))); \
>>                 tcg_gen_and_i64(xah, xah, sgm);                  \
>> @@ -7249,16 +7268,16 @@ static void glue(gen_, name)(DisasContext * ctx)     
>>             \
>>                 tcg_gen_andc_i64(xbl, xbl, sgm);                 \
>>                 tcg_gen_or_i64(xbh, xbh, xah);                   \
>>                 tcg_gen_or_i64(xbl, xbl, xal);                   \
>> -                tcg_temp_free(xah);                              \
>> -                tcg_temp_free(xal);                              \
>> +                tcg_temp_free_i64(xah);                          \
>> +                tcg_temp_free_i64(xal);                          \
>>                 break;                                           \
>>             }                                                    \
>>         }                                                        \
>>         tcg_gen_mov_i64(cpu_vsrh(xT(ctx->opcode)), xbh);         \
>>         tcg_gen_mov_i64(cpu_vsrl(xT(ctx->opcode)), xbl);         \
>> -        tcg_temp_free(xbh);                                      \
>> -        tcg_temp_free(xbl);                                      \
>> -        tcg_temp_free(sgm);                                      \
>> +        tcg_temp_free_i64(xbh);                                  \
>> +        tcg_temp_free_i64(xbl);                                  \
>> +        tcg_temp_free_i64(sgm);                                  \
>>     }
>> 
>> VSX_VECTOR_MOVE(xvabsdp, OP_ABS, SGN_MASK_DP)
>> @@ -7284,11 +7303,11 @@ static void glue(gen_, name)(DisasContext * ctx)     
>>                 \
>>             cpu_vsrl(xB(ctx->opcode)));                              \
>>     }
>> 
>> -VSX_LOGICAL(xxland, tcg_gen_and_tl)
>> -VSX_LOGICAL(xxlandc, tcg_gen_andc_tl)
>> -VSX_LOGICAL(xxlor, tcg_gen_or_tl)
>> -VSX_LOGICAL(xxlxor, tcg_gen_xor_tl)
>> -VSX_LOGICAL(xxlnor, tcg_gen_nor_tl)
>> +VSX_LOGICAL(xxland, tcg_gen_and_i64)
>> +VSX_LOGICAL(xxlandc, tcg_gen_andc_i64)
>> +VSX_LOGICAL(xxlor, tcg_gen_or_i64)
>> +VSX_LOGICAL(xxlxor, tcg_gen_xor_i64)
>> +VSX_LOGICAL(xxlnor, tcg_gen_nor_i64)
>> 
>> #define VSX_XXMRG(name, high)                               \
>> static void glue(gen_, name)(DisasContext * ctx)            \
>> @@ -7298,10 +7317,10 @@ static void glue(gen_, name)(DisasContext * ctx)     
>>        \
>>             gen_exception(ctx, POWERPC_EXCP_VSXU);          \
>>             return;                                         \
>>         }                                                   \
>> -        a0 = tcg_temp_new();                                \
>> -        a1 = tcg_temp_new();                                \
>> -        b0 = tcg_temp_new();                                \
>> -        b1 = tcg_temp_new();                                \
>> +        a0 = tcg_temp_new_i64();                            \
>> +        a1 = tcg_temp_new_i64();                            \
>> +        b0 = tcg_temp_new_i64();                            \
>> +        b1 = tcg_temp_new_i64();                            \
>>         if (high) {                                         \
>>             tcg_gen_mov_i64(a0, cpu_vsrh(xA(ctx->opcode))); \
>>             tcg_gen_mov_i64(a1, cpu_vsrh(xA(ctx->opcode))); \
>> @@ -7319,10 +7338,10 @@ static void glue(gen_, name)(DisasContext * ctx)     
>>        \
>>                             b0, a0, 32, 32);                \
>>         tcg_gen_deposit_i64(cpu_vsrl(xT(ctx->opcode)),      \
>>                             b1, a1, 32, 32);                \
>> -        tcg_temp_free(a0);                                  \
>> -        tcg_temp_free(a1);                                  \
>> -        tcg_temp_free(b0);                                  \
>> -        tcg_temp_free(b1);                                  \
>> +        tcg_temp_free_i64(a0);                              \
>> +        tcg_temp_free_i64(a1);                              \
>> +        tcg_temp_free_i64(b0);                              \
>> +        tcg_temp_free_i64(b1);                              \
>>     }
>> 
>> VSX_XXMRG(xxmrghw, 1)
>> @@ -7335,9 +7354,9 @@ static void gen_xxsel(DisasContext * ctx)
>>         gen_exception(ctx, POWERPC_EXCP_VSXU);
>>         return;
>>     }
>> -    a = tcg_temp_new();
>> -    b = tcg_temp_new();
>> -    c = tcg_temp_new();
>> +    a = tcg_temp_new_i64();
>> +    b = tcg_temp_new_i64();
>> +    c = tcg_temp_new_i64();
>> 
>>     tcg_gen_mov_i64(a, cpu_vsrh(xA(ctx->opcode)));
>>     tcg_gen_mov_i64(b, cpu_vsrh(xB(ctx->opcode)));
>> @@ -7355,9 +7374,9 @@ static void gen_xxsel(DisasContext * ctx)
>>     tcg_gen_andc_i64(a, a, c);
>>     tcg_gen_or_i64(cpu_vsrl(xT(ctx->opcode)), a, b);
>> 
>> -    tcg_temp_free(a);
>> -    tcg_temp_free(b);
>> -    tcg_temp_free(c);
>> +    tcg_temp_free_i64(a);
>> +    tcg_temp_free_i64(b);
>> +    tcg_temp_free_i64(c);
>> }
>> 
>> static void gen_xxspltw(DisasContext *ctx)
>> @@ -7372,8 +7391,8 @@ static void gen_xxspltw(DisasContext *ctx)
>>         return;
>>     }
>> 
>> -    b = tcg_temp_new();
>> -    b2 = tcg_temp_new();
>> +    b = tcg_temp_new_i64();
>> +    b2 = tcg_temp_new_i64();
>> 
>>     if (UIM(ctx->opcode) & 1) {
>>         tcg_gen_ext32u_i64(b, vsr);
>> @@ -7385,8 +7404,8 @@ static void gen_xxspltw(DisasContext *ctx)
>>     tcg_gen_or_i64(cpu_vsrh(xT(ctx->opcode)), b, b2);
>>     tcg_gen_mov_i64(cpu_vsrl(xT(ctx->opcode)), cpu_vsrh(xT(ctx->opcode)));
>> 
>> -    tcg_temp_free(b);
>> -    tcg_temp_free(b2);
>> +    tcg_temp_free_i64(b);
>> +    tcg_temp_free_i64(b2);
>> }
>> 
>> static void gen_xxsldwi(DisasContext *ctx)
>> @@ -7396,8 +7415,8 @@ static void gen_xxsldwi(DisasContext *ctx)
>>         gen_exception(ctx, POWERPC_EXCP_VSXU);
>>         return;
>>     }
>> -    xth = tcg_temp_new();
>> -    xtl = tcg_temp_new();
>> +    xth = tcg_temp_new_i64();
>> +    xtl = tcg_temp_new_i64();
>> 
>>     switch (SHW(ctx->opcode)) {
>>         case 0: {
>> @@ -7406,7 +7425,7 @@ static void gen_xxsldwi(DisasContext *ctx)
>>             break;
>>         }
>>         case 1: {
>> -            TCGv_i64 t0 = tcg_temp_new();
>> +            TCGv_i64 t0 = tcg_temp_new_i64();
>>             tcg_gen_mov_i64(xth, cpu_vsrh(xA(ctx->opcode)));
>>             tcg_gen_shli_i64(xth, xth, 32);
>>             tcg_gen_mov_i64(t0, cpu_vsrl(xA(ctx->opcode)));
>> @@ -7417,7 +7436,7 @@ static void gen_xxsldwi(DisasContext *ctx)
>>             tcg_gen_mov_i64(t0, cpu_vsrh(xB(ctx->opcode)));
>>             tcg_gen_shri_i64(t0, t0, 32);
>>             tcg_gen_or_i64(xtl, xtl, t0);
>> -            tcg_temp_free(t0);
>> +            tcg_temp_free_i64(t0);
>>             break;
>>         }
>>         case 2: {
>> @@ -7426,7 +7445,7 @@ static void gen_xxsldwi(DisasContext *ctx)
>>             break;
>>         }
>>         case 3: {
>> -            TCGv_i64 t0 = tcg_temp_new();
>> +            TCGv_i64 t0 = tcg_temp_new_i64();
>>             tcg_gen_mov_i64(xth, cpu_vsrl(xA(ctx->opcode)));
>>             tcg_gen_shli_i64(xth, xth, 32);
>>             tcg_gen_mov_i64(t0, cpu_vsrh(xB(ctx->opcode)));
>> @@ -7437,7 +7456,7 @@ static void gen_xxsldwi(DisasContext *ctx)
>>             tcg_gen_mov_i64(t0, cpu_vsrl(xB(ctx->opcode)));
>>             tcg_gen_shri_i64(t0, t0, 32);
>>             tcg_gen_or_i64(xtl, xtl, t0);
>> -            tcg_temp_free(t0);
>> +            tcg_temp_free_i64(t0);
>>             break;
>>         }
>>     }
>> @@ -7445,8 +7464,8 @@ static void gen_xxsldwi(DisasContext *ctx)
>>     tcg_gen_mov_i64(cpu_vsrh(xT(ctx->opcode)), xth);
>>     tcg_gen_mov_i64(cpu_vsrl(xT(ctx->opcode)), xtl);
>> 
>> -    tcg_temp_free(xth);
>> -    tcg_temp_free(xtl);
>> +    tcg_temp_free_i64(xth);
>> +    tcg_temp_free_i64(xtl);
>> }
>> 
> 
> This takes a different approach for the load/store part than in my
> patch, but it is also good. So:
> 
> Reviewed-by: Aurelien Jarno <address@hidden>

Please apply it to the tree straight ahead then :).


Alex




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