diff options
Diffstat (limited to 'include/exec/exec-all.h')
| -rw-r--r-- | include/exec/exec-all.h | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h index 53f1835c43..923ece3e9b 100644 --- a/include/exec/exec-all.h +++ b/include/exec/exec-all.h @@ -22,6 +22,7 @@ #include "qemu-common.h" #include "exec/tb-context.h" +#include "sysemu/cpus.h" /* allow to see translation results - the slowdown should be negligible, so we leave it */ #define DEBUG_DISAS @@ -305,10 +306,14 @@ static inline void tb_invalidate_phys_addr(AddressSpace *as, hwaddr addr) /* * Translation Cache-related fields of a TB. + * This struct exists just for convenience; we keep track of TB's in a binary + * search tree, and the only fields needed to compare TB's in the tree are + * @ptr and @size. + * Note: the address of search data can be obtained by adding @size to @ptr. */ struct tb_tc { void *ptr; /* pointer to the translated code */ - uint8_t *search; /* pointer to search data */ + size_t size; }; struct TranslationBlock { @@ -319,12 +324,15 @@ struct TranslationBlock { size <= TARGET_PAGE_SIZE) */ uint16_t icount; uint32_t cflags; /* compile flags */ -#define CF_COUNT_MASK 0x7fff -#define CF_LAST_IO 0x8000 /* Last insn may be an IO access. */ -#define CF_NOCACHE 0x10000 /* To be freed after execution */ -#define CF_USE_ICOUNT 0x20000 -#define CF_IGNORE_ICOUNT 0x40000 /* Do not generate icount code */ -#define CF_INVALID 0x80000 /* TB is stale. Setters must acquire tb_lock */ +#define CF_COUNT_MASK 0x00007fff +#define CF_LAST_IO 0x00008000 /* Last insn may be an IO access. */ +#define CF_NOCACHE 0x00010000 /* To be freed after execution */ +#define CF_USE_ICOUNT 0x00020000 +#define CF_INVALID 0x00040000 /* TB is stale. Setters need tb_lock */ +#define CF_PARALLEL 0x00080000 /* Generate code for a parallel context */ +/* cflags' mask for hashing/comparison */ +#define CF_HASH_MASK \ + (CF_COUNT_MASK | CF_LAST_IO | CF_USE_ICOUNT | CF_PARALLEL) /* Per-vCPU dynamic tracing state used to generate this TB */ uint32_t trace_vcpu_dstate; @@ -365,11 +373,27 @@ struct TranslationBlock { uintptr_t jmp_list_first; }; -void tb_free(TranslationBlock *tb); +extern bool parallel_cpus; + +/* Hide the atomic_read to make code a little easier on the eyes */ +static inline uint32_t tb_cflags(const TranslationBlock *tb) +{ + return atomic_read(&tb->cflags); +} + +/* current cflags for hashing/comparison */ +static inline uint32_t curr_cflags(void) +{ + return (parallel_cpus ? CF_PARALLEL : 0) + | (use_icount ? CF_USE_ICOUNT : 0); +} + +void tb_remove(TranslationBlock *tb); void tb_flush(CPUState *cpu); void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr); TranslationBlock *tb_htable_lookup(CPUState *cpu, target_ulong pc, - target_ulong cs_base, uint32_t flags); + target_ulong cs_base, uint32_t flags, + uint32_t cf_mask); void tb_set_jmp_target(TranslationBlock *tb, int n, uintptr_t addr); /* GETPC is the true target of the return instruction that we'll execute. */ |