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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: Peter Maydell <peter.maydell@linaro.org>
Subject: [PATCH v3 08/28] target/avr: Use translator_use_goto_tb
Date: Thu,  8 Jul 2021 09:40:30 -0700	[thread overview]
Message-ID: <20210708164050.711967-9-richard.henderson@linaro.org> (raw)
In-Reply-To: <20210708164050.711967-1-richard.henderson@linaro.org>

Single stepping is not the only reason not to use goto_tb.
If goto_tb is disallowed, and single-stepping is not enabled,
then use tcg_gen_lookup_and_goto_tb to indirectly chain.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/avr/translate.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/target/avr/translate.c b/target/avr/translate.c
index c06ce45bc7..8237a03c23 100644
--- a/target/avr/translate.c
+++ b/target/avr/translate.c
@@ -1083,14 +1083,17 @@ static void gen_goto_tb(DisasContext *ctx, int n, target_ulong dest)
 {
     const TranslationBlock *tb = ctx->base.tb;
 
-    if (!ctx->base.singlestep_enabled) {
+    if (translator_use_goto_tb(&ctx->base, dest)) {
         tcg_gen_goto_tb(n);
         tcg_gen_movi_i32(cpu_pc, dest);
         tcg_gen_exit_tb(tb, n);
     } else {
         tcg_gen_movi_i32(cpu_pc, dest);
-        gen_helper_debug(cpu_env);
-        tcg_gen_exit_tb(NULL, 0);
+        if (ctx->base.singlestep_enabled) {
+            gen_helper_debug(cpu_env);
+        } else {
+            tcg_gen_lookup_and_goto_ptr();
+        }
     }
     ctx->base.is_jmp = DISAS_NORETURN;
 }
-- 
2.25.1



  parent reply	other threads:[~2021-07-08 16:59 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-08 16:40 [PATCH v3 00/28] accel/tcg: Introduce translator_use_goto_tb Richard Henderson
2021-07-08 16:40 ` [PATCH v3 01/28] " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 02/28] target/alpha: Remove use_exit_tb Richard Henderson
2021-07-08 16:40 ` [PATCH v3 03/28] target/alpha: Remove in_superpage Richard Henderson
2021-07-08 16:40 ` [PATCH v3 04/28] target/alpha: Use translator_use_goto_tb Richard Henderson
2021-07-08 16:40 ` [PATCH v3 05/28] target/arm: Use DISAS_TOO_MANY for ISB and SB Richard Henderson
2021-07-08 16:40 ` [PATCH v3 06/28] target/arm: Use translator_use_goto_tb for aarch64 Richard Henderson
2021-07-08 16:40 ` [PATCH v3 07/28] target/arm: Use translator_use_goto_tb for aarch32 Richard Henderson
2021-07-08 16:40 ` Richard Henderson [this message]
2021-07-08 16:40 ` [PATCH v3 09/28] target/avr: Mark some helpers noreturn Richard Henderson
2021-07-08 16:40 ` [PATCH v3 10/28] target/cris: Use translator_use_goto_tb Richard Henderson
2021-07-08 16:40 ` [PATCH v3 11/28] target/hppa: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 12/28] target/i386: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 13/28] target/m68k: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 14/28] target/microblaze: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 15/28] target/mips: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 16/28] target/mips: Fix missing else in gen_goto_tb Richard Henderson
2021-07-08 16:40 ` [PATCH v3 17/28] target/nios2: Use translator_use_goto_tb Richard Henderson
2021-07-08 16:40 ` [PATCH v3 18/28] target/openrisc: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 19/28] target/ppc: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 20/28] target/riscv: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 21/28] target/rx: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 22/28] target/s390x: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 23/28] target/s390x: Remove use_exit_tb Richard Henderson
2021-07-08 16:40 ` [PATCH v3 24/28] target/sh4: Use translator_use_goto_tb Richard Henderson
2021-07-08 16:40 ` [PATCH v3 25/28] target/sparc: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 26/28] target/tricore: " Richard Henderson
2021-07-08 16:40 ` [PATCH v3 27/28] target/tricore: Use tcg_gen_lookup_and_goto_ptr Richard Henderson
2021-07-08 16:40 ` [PATCH v3 28/28] target/xtensa: Use translator_use_goto_tb Richard Henderson

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