From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39471) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f97dF-0006Kw-5T for qemu-devel@nongnu.org; Thu, 19 Apr 2018 07:21:42 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1f97dE-0008AW-BB for qemu-devel@nongnu.org; Thu, 19 Apr 2018 07:21:41 -0400 Received: from mail-lf0-x244.google.com ([2a00:1450:4010:c07::244]:38928) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1f97dE-00088e-3a for qemu-devel@nongnu.org; Thu, 19 Apr 2018 07:21:40 -0400 Received: by mail-lf0-x244.google.com with SMTP id p142-v6so256929lfd.6 for ; Thu, 19 Apr 2018 04:21:40 -0700 (PDT) From: "Edgar E. Iglesias" Date: Thu, 19 Apr 2018 13:21:30 +0200 Message-Id: <20180419112131.16932-5-edgar.iglesias@gmail.com> In-Reply-To: <20180419112131.16932-1-edgar.iglesias@gmail.com> References: <20180419112131.16932-1-edgar.iglesias@gmail.com> Subject: [Qemu-devel] [PATCH v1 4/5] target-microblaze: mmu: Make TLBSX write-only List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, sai.pavan.boddu@xilinx.com, alistair@alistair23.me, frasse.iglesias@gmail.com, edgar.iglesias@xilinx.com From: "Edgar E. Iglesias" Make TLBSX write-only and guest-error log reads from it. Signed-off-by: Edgar E. Iglesias --- target/microblaze/mmu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/target/microblaze/mmu.c b/target/microblaze/mmu.c index a0f06758f8..8391811900 100644 --- a/target/microblaze/mmu.c +++ b/target/microblaze/mmu.c @@ -182,7 +182,7 @@ done: uint32_t mmu_read(CPUMBState *env, uint32_t rn) { unsigned int i; - uint32_t r; + uint32_t r = 0; if (env->mmu.c_mmu < 2 || !env->mmu.c_mmu_tlb_access) { qemu_log_mask(LOG_GUEST_ERROR, "MMU access on MMU-less system\n"); @@ -211,6 +211,9 @@ uint32_t mmu_read(CPUMBState *env, uint32_t rn) } r = env->mmu.regs[rn]; break; + case MMU_R_TLBSX: + qemu_log_mask(LOG_GUEST_ERROR, "TLBSX is write-only.\n"); + break; default: r = env->mmu.regs[rn]; break; -- 2.14.1