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tcg: define tcg_init_ctx and make tcg_ctx a pointer

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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 <rth@twiddle.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Emilio G. Cota
2017-07-12 17:15:52 -04:00
committed by Richard Henderson
parent 44ded3d048
commit b1311c4acf
29 changed files with 130 additions and 126 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
include/exec/gen-icount.h
View File

@@ -19,7 +19,7 @@ static inline void gen_tb_start(TranslationBlock *tb)
count = tcg_temp_new_i32();
}
tcg_gen_ld_i32(count, tcg_ctx.tcg_env,
tcg_gen_ld_i32(count, tcg_ctx->tcg_env,
-ENV_OFFSET + offsetof(CPUState, icount_decr.u32));
if (tb_cflags(tb) & CF_USE_ICOUNT) {
@@ -37,7 +37,7 @@ static inline void gen_tb_start(TranslationBlock *tb)
tcg_gen_brcondi_i32(TCG_COND_LT, count, 0, exitreq_label);
if (tb_cflags(tb) & CF_USE_ICOUNT) {
tcg_gen_st16_i32(count, tcg_ctx.tcg_env,
tcg_gen_st16_i32(count, tcg_ctx->tcg_env,
-ENV_OFFSET + offsetof(CPUState, icount_decr.u16.low));
}
@@ -56,13 +56,13 @@ static inline void gen_tb_end(TranslationBlock *tb, int num_insns)
tcg_gen_exit_tb((uintptr_t)tb + TB_EXIT_REQUESTED);
/* Terminate the linked list. */
tcg_ctx.gen_op_buf[tcg_ctx.gen_op_buf[0].prev].next = 0;
tcg_ctx->gen_op_buf[tcg_ctx->gen_op_buf[0].prev].next = 0;
}
static inline void gen_io_start(void)
{
TCGv_i32 tmp = tcg_const_i32(1);
tcg_gen_st_i32(tmp, tcg_ctx.tcg_env,
tcg_gen_st_i32(tmp, tcg_ctx->tcg_env,
-ENV_OFFSET + offsetof(CPUState, can_do_io));
tcg_temp_free_i32(tmp);
}
@@ -70,7 +70,7 @@ static inline void gen_io_start(void)
static inline void gen_io_end(void)
{
TCGv_i32 tmp = tcg_const_i32(0);
tcg_gen_st_i32(tmp, tcg_ctx.tcg_env,
tcg_gen_st_i32(tmp, tcg_ctx->tcg_env,
-ENV_OFFSET + offsetof(CPUState, can_do_io));
tcg_temp_free_i32(tmp);
}