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tcg: Initialize cpu_env generically

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This is identical for each target.  So, move the initialization to
common code.  Move the variable itself out of tcg_ctx and name it
cpu_env to minimize changes within targets.

This also means we can remove tcg_global_reg_new_{ptr,i32,i64},
since there are no longer global-register temps created by targets.

Reviewed-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2017-10-10 14:34:37 -07:00
parent 3468b59e18
commit 1c2adb958f
26 changed files with 28 additions and 133 deletions
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10
include/exec/gen-icount.h
View file

@ -18,7 +18,7 @@ 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, cpu_env,
-ENV_OFFSET + offsetof(CPUState, icount_decr.u32));
if (tb_cflags(tb) & CF_USE_ICOUNT) {
@ -36,7 +36,7 @@ static inline void gen_tb_start(TranslationBlock *tb)
tcg_gen_brcondi_i32(TCG_COND_LT, count, 0, tcg_ctx->exitreq_label);
if (tb_cflags(tb) & CF_USE_ICOUNT) {
tcg_gen_st16_i32(count, tcg_ctx->tcg_env,
tcg_gen_st16_i32(count, cpu_env,
-ENV_OFFSET + offsetof(CPUState, icount_decr.u16.low));
}
@ -61,16 +61,14 @@ static inline void gen_tb_end(TranslationBlock *tb, int num_insns)
static inline void gen_io_start(void)
{
TCGv_i32 tmp = tcg_const_i32(1);
tcg_gen_st_i32(tmp, tcg_ctx->tcg_env,
-ENV_OFFSET + offsetof(CPUState, can_do_io));
tcg_gen_st_i32(tmp, cpu_env, -ENV_OFFSET + offsetof(CPUState, can_do_io));
tcg_temp_free_i32(tmp);
}
static inline void gen_io_end(void)
{
TCGv_i32 tmp = tcg_const_i32(0);
tcg_gen_st_i32(tmp, tcg_ctx->tcg_env,
-ENV_OFFSET + offsetof(CPUState, can_do_io));
tcg_gen_st_i32(tmp, cpu_env, -ENV_OFFSET + offsetof(CPUState, can_do_io));
tcg_temp_free_i32(tmp);
}