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target/ppc: Introduce macros to check isa extensions 

These will be used by the decodetree trans_* functions
to early-exit when the instruction set is not enabled.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Message-Id: <20210601193528.2533031-2-matheus.ferst@eldorado.org.br>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Richard Henderson 2021-06-01 16:35:15 -03:00 committed by David Gibson
parent 51b385db58
commit c9826ae97e
1 changed files with 26 additions and 0 deletions
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26
target/ppc/translate.c
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@ -7664,6 +7664,32 @@ static inline void set_avr64(int regno, TCGv_i64 src, bool high)
tcg_gen_st_i64(src, cpu_env, avr64_offset(regno, high));
}
/*
* Helpers for trans_* functions to check for specific insns flags.
* Use token pasting to ensure that we use the proper flag with the
* proper variable.
*/
#define REQUIRE_INSNS_FLAGS(CTX, NAME) \
do { \
if (((CTX)->insns_flags & PPC_##NAME) == 0) { \
return false; \
} \
} while (0)
#define REQUIRE_INSNS_FLAGS2(CTX, NAME) \
do { \
if (((CTX)->insns_flags2 & PPC2_##NAME) == 0) { \
return false; \
} \
} while (0)
/* Then special-case the check for 64-bit so that we elide code for ppc32. */
#if TARGET_LONG_BITS == 32
# define REQUIRE_64BIT(CTX) return false
#else
# define REQUIRE_64BIT(CTX) REQUIRE_INSNS_FLAGS(CTX, 64B)
#endif
#include "translate/fp-impl.c.inc"
#include "translate/vmx-impl.c.inc"