diff options
| -rw-r--r-- | tcg/tcg.c | 32 | ||||
| -rw-r--r-- | tcg/tcg.h | 17 |
2 files changed, 49 insertions, 0 deletions
@@ -450,6 +450,10 @@ static inline int tcg_temp_new_internal(TCGType type, int temp_local) s->nb_temps++; } } + +#if defined(CONFIG_DEBUG_TCG) + s->temps_in_use++; +#endif return idx; } @@ -475,6 +479,13 @@ static inline void tcg_temp_free_internal(int idx) TCGTemp *ts; int k; +#if defined(CONFIG_DEBUG_TCG) + s->temps_in_use--; + if (s->temps_in_use < 0) { + fprintf(stderr, "More temporaries freed than allocated!\n"); + } +#endif + assert(idx >= s->nb_globals && idx < s->nb_temps); ts = &s->temps[idx]; assert(ts->temp_allocated != 0); @@ -528,6 +539,27 @@ TCGv_i64 tcg_const_local_i64(int64_t val) return t0; } +#if defined(CONFIG_DEBUG_TCG) +void tcg_clear_temp_count(void) +{ + TCGContext *s = &tcg_ctx; + s->temps_in_use = 0; +} + +int tcg_check_temp_count(void) +{ + TCGContext *s = &tcg_ctx; + if (s->temps_in_use) { + /* Clear the count so that we don't give another + * warning immediately next time around. + */ + s->temps_in_use = 0; + return 1; + } + return 0; +} +#endif + void tcg_register_helper(void *func, const char *name) { TCGContext *s = &tcg_ctx; @@ -323,6 +323,10 @@ struct TCGContext { int64_t restore_count; int64_t restore_time; #endif + +#ifdef CONFIG_DEBUG_TCG + int temps_in_use; +#endif }; extern TCGContext tcg_ctx; @@ -392,6 +396,19 @@ static inline TCGv_i64 tcg_temp_local_new_i64(void) void tcg_temp_free_i64(TCGv_i64 arg); char *tcg_get_arg_str_i64(TCGContext *s, char *buf, int buf_size, TCGv_i64 arg); +#if defined(CONFIG_DEBUG_TCG) +/* If you call tcg_clear_temp_count() at the start of a section of + * code which is not supposed to leak any TCG temporaries, then + * calling tcg_check_temp_count() at the end of the section will + * return 1 if the section did in fact leak a temporary. + */ +void tcg_clear_temp_count(void); +int tcg_check_temp_count(void); +#else +#define tcg_clear_temp_count() do { } while (0) +#define tcg_check_temp_count() 0 +#endif + void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf); #define TCG_CT_ALIAS 0x80 |