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X-Received-From: 2607:f8b0:400d:c0d::243 Subject: [Qemu-devel] [PULL 26/26] target/alpha: Use goto_tb for fallthru between TBs X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Signed-off-by: Richard Henderson --- target/alpha/translate.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/target/alpha/translate.c b/target/alpha/translate.c index 4523c4c..7c45ae3 100644 --- a/target/alpha/translate.c +++ b/target/alpha/translate.c @@ -89,6 +89,9 @@ typedef enum { updated the PC for the next instruction to be executed. */ EXIT_PC_STALE, =20 + /* We are exiting the TB due to page crossing or space constraints. */ + EXIT_FALLTHRU, + /* We are ending the TB with a noreturn function call, e.g. longjmp. No following code will be executed. */ EXIT_NORETURN, @@ -2984,7 +2987,7 @@ void gen_intermediate_code(CPUAlphaState *env, struct= TranslationBlock *tb) || num_insns >=3D max_insns || singlestep || ctx.singlestep_enabled)) { - ret =3D EXIT_PC_STALE; + ret =3D EXIT_FALLTHRU; } } while (ret =3D=3D NO_EXIT); =20 @@ -2996,6 +2999,13 @@ void gen_intermediate_code(CPUAlphaState *env, struc= t TranslationBlock *tb) case EXIT_GOTO_TB: case EXIT_NORETURN: break; + case EXIT_FALLTHRU: + if (use_goto_tb(&ctx, ctx.pc)) { + tcg_gen_goto_tb(0); + tcg_gen_movi_i64(cpu_pc, ctx.pc); + tcg_gen_exit_tb((uintptr_t)ctx.tb); + } + /* FALLTHRU */ case EXIT_PC_STALE: tcg_gen_movi_i64(cpu_pc, ctx.pc); /* FALLTHRU */ @@ -3007,7 +3017,7 @@ void gen_intermediate_code(CPUAlphaState *env, struct= TranslationBlock *tb) } break; default: - abort(); + g_assert_not_reached(); } =20 gen_tb_end(tb, num_insns); --=20 2.9.4