From patchwork Tue Dec 5 19:46:22 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Maydell X-Patchwork-Id: 844896 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3yrsnP3nSpz9t2c for ; Wed, 6 Dec 2017 06:51:21 +1100 (AEDT) Received: from localhost ([::1]:51791 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eMJFP-0005AM-GM for incoming@patchwork.ozlabs.org; Tue, 05 Dec 2017 14:51:19 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56814) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eMJBA-0001Ak-GZ for qemu-devel@nongnu.org; Tue, 05 Dec 2017 14:47:00 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eMJB9-0002Pi-HQ for qemu-devel@nongnu.org; Tue, 05 Dec 2017 14:46:56 -0500 Received: from orth.archaic.org.uk ([2001:8b0:1d0::2]:38776) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eMJB6-0002CW-ST; Tue, 05 Dec 2017 14:46:53 -0500 Received: from pm215 by orth.archaic.org.uk with local (Exim 4.89) (envelope-from ) id 1eMJAp-000597-1N; Tue, 05 Dec 2017 19:46:35 +0000 From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Date: Tue, 5 Dec 2017 19:46:22 +0000 Message-Id: <1512503192-2239-3-git-send-email-peter.maydell@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1512503192-2239-1-git-send-email-peter.maydell@linaro.org> References: <1512503192-2239-1-git-send-email-peter.maydell@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2001:8b0:1d0::2 Subject: [Qemu-devel] [PATCH 02/12] target/arm: Remove fsr argument from arm_ld*_ptw() 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: "Edgar E . Iglesias" , Stefano Stabellini , patches@linaro.org Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" All the callers of arm_ldq_ptw() and arm_ldl_ptw() ignore the value that those functions store in the fsr argument on failure: if they return failure to their callers they will always overwrite the fsr value with something else. Remove the argument from these functions and S1_ptw_translate(). This will simplify removing fsr from the calling functions. Signed-off-by: Peter Maydell --- target/arm/helper.c | 24 +++++++++++------------- 1 file changed, 11 insertions(+), 13 deletions(-) diff --git a/target/arm/helper.c b/target/arm/helper.c index 5368ad8..30616d9 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -8269,7 +8269,6 @@ static bool get_level1_table_address(CPUARMState *env, ARMMMUIdx mmu_idx, /* Translate a S1 pagetable walk through S2 if needed. */ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx, hwaddr addr, MemTxAttrs txattrs, - uint32_t *fsr, ARMMMUFaultInfo *fi) { if ((mmu_idx == ARMMMUIdx_S1NSE0 || mmu_idx == ARMMMUIdx_S1NSE1) && @@ -8278,9 +8277,10 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx, hwaddr s2pa; int s2prot; int ret; + uint32_t fsr; ret = get_phys_addr_lpae(env, addr, 0, ARMMMUIdx_S2NS, &s2pa, - &txattrs, &s2prot, &s2size, fsr, fi, NULL); + &txattrs, &s2prot, &s2size, &fsr, fi, NULL); if (ret) { fi->s2addr = addr; fi->stage2 = true; @@ -8300,8 +8300,7 @@ static hwaddr S1_ptw_translate(CPUARMState *env, ARMMMUIdx mmu_idx, * (but not if it was for a debug access). */ static uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure, - ARMMMUIdx mmu_idx, uint32_t *fsr, - ARMMMUFaultInfo *fi) + ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi) { ARMCPU *cpu = ARM_CPU(cs); CPUARMState *env = &cpu->env; @@ -8310,7 +8309,7 @@ static uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure, attrs.secure = is_secure; as = arm_addressspace(cs, attrs); - addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fsr, fi); + addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fi); if (fi->s1ptw) { return 0; } @@ -8322,8 +8321,7 @@ static uint32_t arm_ldl_ptw(CPUState *cs, hwaddr addr, bool is_secure, } static uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure, - ARMMMUIdx mmu_idx, uint32_t *fsr, - ARMMMUFaultInfo *fi) + ARMMMUIdx mmu_idx, ARMMMUFaultInfo *fi) { ARMCPU *cpu = ARM_CPU(cs); CPUARMState *env = &cpu->env; @@ -8332,7 +8330,7 @@ static uint64_t arm_ldq_ptw(CPUState *cs, hwaddr addr, bool is_secure, attrs.secure = is_secure; as = arm_addressspace(cs, attrs); - addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fsr, fi); + addr = S1_ptw_translate(env, mmu_idx, addr, attrs, fi); if (fi->s1ptw) { return 0; } @@ -8368,7 +8366,7 @@ static bool get_phys_addr_v5(CPUARMState *env, uint32_t address, goto do_fault; } desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), - mmu_idx, fsr, fi); + mmu_idx, fi); type = (desc & 3); domain = (desc >> 5) & 0x0f; if (regime_el(env, mmu_idx) == 1) { @@ -8405,7 +8403,7 @@ static bool get_phys_addr_v5(CPUARMState *env, uint32_t address, table = (desc & 0xfffff000) | ((address >> 8) & 0xffc); } desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), - mmu_idx, fsr, fi); + mmu_idx, fi); switch (desc & 3) { case 0: /* Page translation fault. */ code = 7; @@ -8487,7 +8485,7 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address, goto do_fault; } desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), - mmu_idx, fsr, fi); + mmu_idx, fi); type = (desc & 3); if (type == 0 || (type == 3 && !arm_feature(env, ARM_FEATURE_PXN))) { /* Section translation fault, or attempt to use the encoding @@ -8539,7 +8537,7 @@ static bool get_phys_addr_v6(CPUARMState *env, uint32_t address, /* Lookup l2 entry. */ table = (desc & 0xfffffc00) | ((address >> 10) & 0x3fc); desc = arm_ldl_ptw(cs, table, regime_is_secure(env, mmu_idx), - mmu_idx, fsr, fi); + mmu_idx, fi); ap = ((desc >> 4) & 3) | ((desc >> 7) & 4); switch (desc & 3) { case 0: /* Page translation fault. */ @@ -8950,7 +8948,7 @@ static bool get_phys_addr_lpae(CPUARMState *env, target_ulong address, descaddr |= (address >> (stride * (4 - level))) & indexmask; descaddr &= ~7ULL; nstable = extract32(tableattrs, 4, 1); - descriptor = arm_ldq_ptw(cs, descaddr, !nstable, mmu_idx, fsr, fi); + descriptor = arm_ldq_ptw(cs, descaddr, !nstable, mmu_idx, fi); if (fi->s1ptw) { goto do_fault; }