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tcg: Move TLB_FLAGS_MASK check out of get_alignment_bits

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The replacement isn't ideal, as the raw count of bits
is not easily synced with exec/cpu-all.h, but it does
remove from tcg.h the target dependency on TARGET_PAGE_BITS_MIN
which is built into TLB_FLAGS_MASK.

Reviewed-by: Anton Johansson <anjo@rev.ng>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-04-01 09:26:35 -07:00
parent 28ea568a03
commit 3a80bde37b
3 changed files with 19 additions and 6 deletions
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3
include/exec/cpu-all.h
View file

@ -314,6 +314,9 @@ CPUArchState *cpu_copy(CPUArchState *env);
*
* Use TARGET_PAGE_BITS_MIN so that these bits are constant
* when TARGET_PAGE_BITS_VARY is in effect.
*
* The count, if not the placement of these bits is known
* to tcg/tcg-op-ldst.c, check_max_alignment().
*/
/* Zero if TLB entry is valid. */
#define TLB_INVALID_MASK (1 << (TARGET_PAGE_BITS_MIN - 1))

4
include/tcg/tcg.h
View file

@ -305,10 +305,6 @@ static inline unsigned get_alignment_bits(MemOp memop)
/* A specific alignment requirement. */
a = a >> MO_ASHIFT;
}
#if defined(CONFIG_SOFTMMU)
/* The requested alignment cannot overlap the TLB flags. */
tcg_debug_assert((TLB_FLAGS_MASK & ((1 << a) - 1)) == 0);
#endif
return a;
}