From b1311c4acf503dc9c1a310cc40b64f05b08833dc Mon Sep 17 00:00:00 2001 From: "Emilio G. Cota" Date: Wed, 12 Jul 2017 17:15:52 -0400 Subject: tcg: define tcg_init_ctx and make tcg_ctx a pointer Groundwork for supporting multiple TCG contexts. The core of this patch is this change to tcg/tcg.h: > -extern TCGContext tcg_ctx; > +extern TCGContext tcg_init_ctx; > +extern TCGContext *tcg_ctx; Note that for now we set *tcg_ctx to whatever TCGContext is passed to tcg_context_init -- in this case &tcg_init_ctx. Reviewed-by: Richard Henderson Signed-off-by: Emilio G. Cota Signed-off-by: Richard Henderson --- tcg/tcg.h | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) (limited to 'tcg/tcg.h') diff --git a/tcg/tcg.h b/tcg/tcg.h index 76324c9..17fd146 100644 --- a/tcg/tcg.h +++ b/tcg/tcg.h @@ -688,12 +688,13 @@ struct TCGContext { target_ulong gen_insn_data[TCG_MAX_INSNS][TARGET_INSN_START_WORDS]; }; -extern TCGContext tcg_ctx; +extern TCGContext tcg_init_ctx; +extern TCGContext *tcg_ctx; static inline size_t temp_idx(TCGTemp *ts) { - ptrdiff_t n = ts - tcg_ctx.temps; - tcg_debug_assert(n >= 0 && n < tcg_ctx.nb_temps); + ptrdiff_t n = ts - tcg_ctx->temps; + tcg_debug_assert(n >= 0 && n < tcg_ctx->nb_temps); return n; } @@ -713,7 +714,7 @@ static inline TCGTemp *arg_temp(TCGArg a) static inline TCGTemp *tcgv_i32_temp(TCGv_i32 v) { uintptr_t o = (uintptr_t)v; - TCGTemp *t = (void *)&tcg_ctx + o; + TCGTemp *t = (void *)tcg_ctx + o; tcg_debug_assert(offsetof(TCGContext, temps[temp_idx(t)]) == o); return t; } @@ -746,7 +747,7 @@ static inline TCGArg tcgv_ptr_arg(TCGv_ptr v) static inline TCGv_i32 temp_tcgv_i32(TCGTemp *t) { (void)temp_idx(t); /* trigger embedded assert */ - return (TCGv_i32)((void *)t - (void *)&tcg_ctx); + return (TCGv_i32)((void *)t - (void *)tcg_ctx); } static inline TCGv_i64 temp_tcgv_i64(TCGTemp *t) @@ -773,13 +774,13 @@ static inline TCGv_i32 TCGV_HIGH(TCGv_i64 t) static inline void tcg_set_insn_param(int op_idx, int arg, TCGArg v) { - tcg_ctx.gen_op_buf[op_idx].args[arg] = v; + tcg_ctx->gen_op_buf[op_idx].args[arg] = v; } /* The number of opcodes emitted so far. */ static inline int tcg_op_buf_count(void) { - return tcg_ctx.gen_next_op_idx; + return tcg_ctx->gen_next_op_idx; } /* Test for whether to terminate the TB for using too many opcodes. */ @@ -798,7 +799,7 @@ TranslationBlock *tcg_tb_alloc(TCGContext *s); /* Called with tb_lock held. */ static inline void *tcg_malloc(int size) { - TCGContext *s = &tcg_ctx; + TCGContext *s = tcg_ctx; uint8_t *ptr, *ptr_end; /* ??? This is a weak placeholder for minimum malloc alignment. */ @@ -807,7 +808,7 @@ static inline void *tcg_malloc(int size) ptr = s->pool_cur; ptr_end = ptr + size; if (unlikely(ptr_end > s->pool_end)) { - return tcg_malloc_internal(&tcg_ctx, size); + return tcg_malloc_internal(tcg_ctx, size); } else { s->pool_cur = ptr_end; return ptr; @@ -1147,7 +1148,7 @@ static inline unsigned get_mmuidx(TCGMemOpIdx oi) uintptr_t tcg_qemu_tb_exec(CPUArchState *env, uint8_t *tb_ptr); #else # define tcg_qemu_tb_exec(env, tb_ptr) \ - ((uintptr_t (*)(void *, void *))tcg_ctx.code_gen_prologue)(env, tb_ptr) + ((uintptr_t (*)(void *, void *))tcg_ctx->code_gen_prologue)(env, tb_ptr) #endif void tcg_register_jit(void *buf, size_t buf_size); -- cgit v1.1