| Message ID | 20201215225757.764263-3-f4bug@amsat.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | target/mips: Convert MSA ASE to decodetree | expand |
Hi, ping for code review? :) Due to the "Simplify ISA definitions" https://www.mail-archive.com/qemu-devel@nongnu.org/msg770056.html patch #3 is not necessary. This is the last patch unreviewed. On 12/15/20 11:57 PM, Philippe Mathieu-Daudé wrote: > To allow compiling 64-bit specific translation code more > generically (and removing #ifdef'ry), allow compiling > check_mips_64() on 32-bit targets. > If ever called on 32-bit, we obviously emit a reserved > instruction exception. > > Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> > --- > target/mips/translate.h | 2 -- > target/mips/translate.c | 8 +++----- > 2 files changed, 3 insertions(+), 7 deletions(-) > > diff --git a/target/mips/translate.h b/target/mips/translate.h > index a9eab69249f..942d803476c 100644 > --- a/target/mips/translate.h > +++ b/target/mips/translate.h > @@ -127,9 +127,7 @@ void generate_exception_err(DisasContext *ctx, int excp, int err); > void generate_exception_end(DisasContext *ctx, int excp); > void gen_reserved_instruction(DisasContext *ctx); > void check_insn(DisasContext *ctx, uint64_t flags); > -#ifdef TARGET_MIPS64 > void check_mips_64(DisasContext *ctx); > -#endif > void check_cp1_enabled(DisasContext *ctx); > > void gen_base_offset_addr(DisasContext *ctx, TCGv addr, int base, int offset); > diff --git a/target/mips/translate.c b/target/mips/translate.c > index 5c62b32c6ae..af543d1f375 100644 > --- a/target/mips/translate.c > +++ b/target/mips/translate.c > @@ -2972,18 +2972,16 @@ static inline void check_ps(DisasContext *ctx) > check_cp1_64bitmode(ctx); > } > > -#ifdef TARGET_MIPS64 > /* > - * This code generates a "reserved instruction" exception if 64-bit > - * instructions are not enabled. > + * This code generates a "reserved instruction" exception if cpu is not > + * 64-bit or 64-bit instructions are not enabled. > */ > void check_mips_64(DisasContext *ctx) > { > - if (unlikely(!(ctx->hflags & MIPS_HFLAG_64))) { > + if (unlikely((TARGET_LONG_BITS != 64) || !(ctx->hflags & MIPS_HFLAG_64))) { Since TARGET_LONG_BITS is known at build time, this can be simplified as: if ((TARGET_LONG_BITS != 64) || unlikely!(ctx->hflags & MIPS_HFLAG_64))) > gen_reserved_instruction(ctx); > } > } > -#endif > > #ifndef CONFIG_USER_ONLY > static inline void check_mvh(DisasContext *ctx) >
On Wed, Jan 6, 2021 at 7:20 PM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote: > > Hi, > > ping for code review? :) FWIW the full series (rebased on mips-next) is available here: https://gitlab.com/philmd/qemu/-/commits/mips_msa_decodetree > > Due to the "Simplify ISA definitions" > https://www.mail-archive.com/qemu-devel@nongnu.org/msg770056.html > patch #3 is not necessary. > > This is the last patch unreviewed. > > On 12/15/20 11:57 PM, Philippe Mathieu-Daudé wrote: > > To allow compiling 64-bit specific translation code more > > generically (and removing #ifdef'ry), allow compiling > > check_mips_64() on 32-bit targets. > > If ever called on 32-bit, we obviously emit a reserved > > instruction exception. > > > > Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> > > --- > > target/mips/translate.h | 2 -- > > target/mips/translate.c | 8 +++----- > > 2 files changed, 3 insertions(+), 7 deletions(-) > > > > diff --git a/target/mips/translate.h b/target/mips/translate.h > > index a9eab69249f..942d803476c 100644 > > --- a/target/mips/translate.h > > +++ b/target/mips/translate.h > > @@ -127,9 +127,7 @@ void generate_exception_err(DisasContext *ctx, int excp, int err); > > void generate_exception_end(DisasContext *ctx, int excp); > > void gen_reserved_instruction(DisasContext *ctx); > > void check_insn(DisasContext *ctx, uint64_t flags); > > -#ifdef TARGET_MIPS64 > > void check_mips_64(DisasContext *ctx); > > -#endif > > void check_cp1_enabled(DisasContext *ctx); > > > > void gen_base_offset_addr(DisasContext *ctx, TCGv addr, int base, int offset); > > diff --git a/target/mips/translate.c b/target/mips/translate.c > > index 5c62b32c6ae..af543d1f375 100644 > > --- a/target/mips/translate.c > > +++ b/target/mips/translate.c > > @@ -2972,18 +2972,16 @@ static inline void check_ps(DisasContext *ctx) > > check_cp1_64bitmode(ctx); > > } > > > > -#ifdef TARGET_MIPS64 > > /* > > - * This code generates a "reserved instruction" exception if 64-bit > > - * instructions are not enabled. > > + * This code generates a "reserved instruction" exception if cpu is not > > + * 64-bit or 64-bit instructions are not enabled. > > */ > > void check_mips_64(DisasContext *ctx) > > { > > - if (unlikely(!(ctx->hflags & MIPS_HFLAG_64))) { > > + if (unlikely((TARGET_LONG_BITS != 64) || !(ctx->hflags & MIPS_HFLAG_64))) { > > Since TARGET_LONG_BITS is known at build time, this can be simplified > as: > > if ((TARGET_LONG_BITS != 64) || unlikely!(ctx->hflags & MIPS_HFLAG_64))) > > > gen_reserved_instruction(ctx); > > } > > } > > -#endif > > > > #ifndef CONFIG_USER_ONLY > > static inline void check_mvh(DisasContext *ctx) > >
在 2021/1/7 上午2:37, Philippe Mathieu-Daudé 写道: > On Wed, Jan 6, 2021 at 7:20 PM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote: >> Hi, >> >> ping for code review? :) > FWIW the full series (rebased on mips-next) is available here: > https://gitlab.com/philmd/qemu/-/commits/mips_msa_decodetree Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> - Jiaxun > >> Due to the "Simplify ISA definitions" >> https://www.mail-archive.com/qemu-devel@nongnu.org/msg770056.html >> patch #3 is not necessary. >> >> This is the last patch unreviewed. >> >> On 12/15/20 11:57 PM, Philippe Mathieu-Daudé wrote: >>> To allow compiling 64-bit specific translation code more >>> generically (and removing #ifdef'ry), allow compiling >>> check_mips_64() on 32-bit targets. >>> If ever called on 32-bit, we obviously emit a reserved >>> instruction exception. >>> >>> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> >>> --- >>> target/mips/translate.h | 2 -- >>> target/mips/translate.c | 8 +++----- >>> 2 files changed, 3 insertions(+), 7 deletions(-) >>> >>> diff --git a/target/mips/translate.h b/target/mips/translate.h >>> index a9eab69249f..942d803476c 100644 >>> --- a/target/mips/translate.h >>> +++ b/target/mips/translate.h >>> @@ -127,9 +127,7 @@ void generate_exception_err(DisasContext *ctx, int excp, int err); >>> void generate_exception_end(DisasContext *ctx, int excp); >>> void gen_reserved_instruction(DisasContext *ctx); >>> void check_insn(DisasContext *ctx, uint64_t flags); >>> -#ifdef TARGET_MIPS64 >>> void check_mips_64(DisasContext *ctx); >>> -#endif >>> void check_cp1_enabled(DisasContext *ctx); >>> >>> void gen_base_offset_addr(DisasContext *ctx, TCGv addr, int base, int offset); >>> diff --git a/target/mips/translate.c b/target/mips/translate.c >>> index 5c62b32c6ae..af543d1f375 100644 >>> --- a/target/mips/translate.c >>> +++ b/target/mips/translate.c >>> @@ -2972,18 +2972,16 @@ static inline void check_ps(DisasContext *ctx) >>> check_cp1_64bitmode(ctx); >>> } >>> >>> -#ifdef TARGET_MIPS64 >>> /* >>> - * This code generates a "reserved instruction" exception if 64-bit >>> - * instructions are not enabled. >>> + * This code generates a "reserved instruction" exception if cpu is not >>> + * 64-bit or 64-bit instructions are not enabled. >>> */ >>> void check_mips_64(DisasContext *ctx) >>> { >>> - if (unlikely(!(ctx->hflags & MIPS_HFLAG_64))) { >>> + if (unlikely((TARGET_LONG_BITS != 64) || !(ctx->hflags & MIPS_HFLAG_64))) { >> Since TARGET_LONG_BITS is known at build time, this can be simplified >> as: >> >> if ((TARGET_LONG_BITS != 64) || unlikely!(ctx->hflags & MIPS_HFLAG_64))) >> >>> gen_reserved_instruction(ctx); >>> } >>> } >>> -#endif >>> >>> #ifndef CONFIG_USER_ONLY >>> static inline void check_mvh(DisasContext *ctx) >>>
diff --git a/target/mips/translate.h b/target/mips/translate.h index a9eab69249f..942d803476c 100644 --- a/target/mips/translate.h +++ b/target/mips/translate.h @@ -127,9 +127,7 @@ void generate_exception_err(DisasContext *ctx, int excp, int err); void generate_exception_end(DisasContext *ctx, int excp); void gen_reserved_instruction(DisasContext *ctx); void check_insn(DisasContext *ctx, uint64_t flags); -#ifdef TARGET_MIPS64 void check_mips_64(DisasContext *ctx); -#endif void check_cp1_enabled(DisasContext *ctx); void gen_base_offset_addr(DisasContext *ctx, TCGv addr, int base, int offset); diff --git a/target/mips/translate.c b/target/mips/translate.c index 5c62b32c6ae..af543d1f375 100644 --- a/target/mips/translate.c +++ b/target/mips/translate.c @@ -2972,18 +2972,16 @@ static inline void check_ps(DisasContext *ctx) check_cp1_64bitmode(ctx); } -#ifdef TARGET_MIPS64 /* - * This code generates a "reserved instruction" exception if 64-bit - * instructions are not enabled. + * This code generates a "reserved instruction" exception if cpu is not + * 64-bit or 64-bit instructions are not enabled. */ void check_mips_64(DisasContext *ctx) { - if (unlikely(!(ctx->hflags & MIPS_HFLAG_64))) { + if (unlikely((TARGET_LONG_BITS != 64) || !(ctx->hflags & MIPS_HFLAG_64))) { gen_reserved_instruction(ctx); } } -#endif #ifndef CONFIG_USER_ONLY static inline void check_mvh(DisasContext *ctx)
To allow compiling 64-bit specific translation code more generically (and removing #ifdef'ry), allow compiling check_mips_64() on 32-bit targets. If ever called on 32-bit, we obviously emit a reserved instruction exception. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> --- target/mips/translate.h | 2 -- target/mips/translate.c | 8 +++----- 2 files changed, 3 insertions(+), 7 deletions(-)