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


From: Aurelien Jarno
Subject: Re: [Qemu-ppc] [Qemu-devel] [PATCH] PPC: Fix compilation with TCG debug
Date: Sun, 22 Dec 2013 17:37:31 +0100
User-agent: Mutt/1.5.21 (2010-09-15)

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>

-- 
Aurelien Jarno                          GPG: 1024D/F1BCDB73
address@hidden                 http://www.aurel32.net



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