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([2602:ae:1541:f901:1d41:7730:d7dd:6f41]) by smtp.gmail.com with ESMTPSA id nl5-20020a17090b384500b00233ccd04a15sm11562013pjb.24.2023.04.04.08.52.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Apr 2023 08:52:24 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, =?UTF-8?q?Alex=20Benn=C3=A9e?= Subject: [PULL 4/4] tcg/sparc64: Disable direct linking for goto_tb Date: Tue, 4 Apr 2023 08:52:20 -0700 Message-Id: <20230404155220.1572650-5-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230404155220.1572650-1-richard.henderson@linaro.org> References: <20230404155220.1572650-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::631; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x631.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Something is wrong with this code, and also wrong with gdb on the sparc systems to which I have access, so I cannot debug it either. Disable for now, so the release is not broken. Reviewed-by: Alex Bennée Signed-off-by: Richard Henderson --- tcg/sparc64/tcg-target.c.inc | 30 ++++-------------------------- 1 file changed, 4 insertions(+), 26 deletions(-) diff --git a/tcg/sparc64/tcg-target.c.inc b/tcg/sparc64/tcg-target.c.inc index ccc4144f7c..694f2b9dd4 100644 --- a/tcg/sparc64/tcg-target.c.inc +++ b/tcg/sparc64/tcg-target.c.inc @@ -1445,12 +1445,12 @@ static void tcg_out_goto_tb(TCGContext *s, int which) { ptrdiff_t off = tcg_tbrel_diff(s, (void *)get_jmp_target_addr(s, which)); - /* Direct branch will be patched by tb_target_set_jmp_target. */ + /* Load link and indirect branch. */ set_jmp_insn_offset(s, which); - tcg_out32(s, CALL); - /* delay slot */ - tcg_debug_assert(check_fit_ptr(off, 13)); tcg_out_ld(s, TCG_TYPE_PTR, TCG_REG_TB, TCG_REG_TB, off); + tcg_out_arithi(s, TCG_REG_G0, TCG_REG_TB, 0, JMPL); + /* delay slot */ + tcg_out_nop(s); set_jmp_reset_offset(s, which); /* @@ -1469,28 +1469,6 @@ static void tcg_out_goto_tb(TCGContext *s, int which) void tb_target_set_jmp_target(const TranslationBlock *tb, int n, uintptr_t jmp_rx, uintptr_t jmp_rw) { - uintptr_t addr = tb->jmp_target_addr[n]; - intptr_t br_disp = (intptr_t)(addr - jmp_rx) >> 2; - tcg_insn_unit insn; - - br_disp >>= 2; - if (check_fit_ptr(br_disp, 19)) { - /* ba,pt %icc, addr */ - insn = deposit32(INSN_OP(0) | INSN_OP2(1) | INSN_COND(COND_A) - | BPCC_ICC | BPCC_PT, 0, 19, br_disp); - } else if (check_fit_ptr(br_disp, 22)) { - /* ba addr */ - insn = deposit32(INSN_OP(0) | INSN_OP2(2) | INSN_COND(COND_A), - 0, 22, br_disp); - } else { - /* The code_gen_buffer can't be larger than 2GB. */ - tcg_debug_assert(check_fit_ptr(br_disp, 30)); - /* call addr */ - insn = deposit32(CALL, 0, 30, br_disp); - } - - qatomic_set((uint32_t *)jmp_rw, insn); - flush_idcache_range(jmp_rx, jmp_rw, 4); } static void tcg_out_op(TCGContext *s, TCGOpcode opc, -- 2.34.1