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cpu-defs: Move out TB_JMP defines 

These are not Architecture specific in any way so move them out of
cpu-defs.h. tb-hash.h is an appropriate place as a leading user and
their strong relationship to TB hashing and caching.

Reviewed-by: Richard Henderson <rth@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Message-Id: <43ceca65a3fa240efac49aa0bf604ad0442e1710.1433052532.git.crosthwaite.peter@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Crosthwaite 2015-05-30 23:11:46 -07:00 committed by Paolo Bonzini
parent e1b89321ba
commit 41da4bd642
2 changed files with 8 additions and 8 deletions
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8
include/exec/cpu-defs.h
View File

@ -56,14 +56,6 @@ typedef uint64_t target_ulong;
#error TARGET_LONG_SIZE undefined #error TARGET_LONG_SIZE undefined
#endif #endif
/* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for
addresses on the same page. The top bits are the same. This allows
TLB invalidation to quickly clear a subset of the hash table. */
#define TB_JMP_PAGE_BITS (TB_JMP_CACHE_BITS / 2)
#define TB_JMP_PAGE_SIZE (1 << TB_JMP_PAGE_BITS)
#define TB_JMP_ADDR_MASK (TB_JMP_PAGE_SIZE - 1)
#define TB_JMP_PAGE_MASK (TB_JMP_CACHE_SIZE - TB_JMP_PAGE_SIZE)
#if !defined(CONFIG_USER_ONLY) #if !defined(CONFIG_USER_ONLY)
/* use a fully associative victim tlb of 8 entries */ /* use a fully associative victim tlb of 8 entries */
#define CPU_VTLB_SIZE 8 #define CPU_VTLB_SIZE 8

8
include/exec/tb-hash.h
View File

@ -20,6 +20,14 @@
#ifndef EXEC_TB_HASH #ifndef EXEC_TB_HASH
#define EXEC_TB_HASH #define EXEC_TB_HASH
/* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for
addresses on the same page. The top bits are the same. This allows
TLB invalidation to quickly clear a subset of the hash table. */
#define TB_JMP_PAGE_BITS (TB_JMP_CACHE_BITS / 2)
#define TB_JMP_PAGE_SIZE (1 << TB_JMP_PAGE_BITS)
#define TB_JMP_ADDR_MASK (TB_JMP_PAGE_SIZE - 1)
#define TB_JMP_PAGE_MASK (TB_JMP_CACHE_SIZE - TB_JMP_PAGE_SIZE)
static inline unsigned int tb_jmp_cache_hash_page(target_ulong pc) static inline unsigned int tb_jmp_cache_hash_page(target_ulong pc)
{ {
target_ulong tmp; target_ulong tmp;