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authorThomas Huth <thuth@redhat.com>2016-10-11 08:56:52 +0200
committerThomas Huth <thuth@redhat.com>2016-12-20 21:52:12 +0100
commitfcf5ef2ab52c621a4617ebbef36bf43b4003f4c0 (patch)
tree2b450d96b01455df8ed908bf8f26ddc388a03380 /target-openrisc/mmu.c
parent82ecffa8c050bf5bbc13329e9b65eac1caa5b55c (diff)
Move target-* CPU file into a target/ folder
We've currently got 18 architectures in QEMU, and thus 18 target-xxx folders in the root folder of the QEMU source tree. More architectures (e.g. RISC-V, AVR) are likely to be included soon, too, so the main folder of the QEMU sources slowly gets quite overcrowded with the target-xxx folders. To disburden the main folder a little bit, let's move the target-xxx folders into a dedicated target/ folder, so that target-xxx/ simply becomes target/xxx/ instead. Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part] Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part] Acked-by: Michael Walle <michael@walle.cc> [lm32 part] Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part] Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part] Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part] Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part] Acked-by: Richard Henderson <rth@twiddle.net> [alpha part] Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part] Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part] Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [cris&microblaze part] Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part] Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'target-openrisc/mmu.c')
-rw-r--r--target-openrisc/mmu.c238
1 files changed, 0 insertions, 238 deletions
diff --git a/target-openrisc/mmu.c b/target-openrisc/mmu.c
deleted file mode 100644
index 505dcdcdc8..0000000000
--- a/target-openrisc/mmu.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/*
- * OpenRISC MMU.
- *
- * Copyright (c) 2011-2012 Jia Liu <proljc@gmail.com>
- * Zhizhou Zhang <etouzh@gmail.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "qemu/osdep.h"
-#include "cpu.h"
-#include "exec/exec-all.h"
-#include "qemu-common.h"
-#include "exec/gdbstub.h"
-#include "qemu/host-utils.h"
-#ifndef CONFIG_USER_ONLY
-#include "hw/loader.h"
-#endif
-
-#ifndef CONFIG_USER_ONLY
-int cpu_openrisc_get_phys_nommu(OpenRISCCPU *cpu,
- hwaddr *physical,
- int *prot, target_ulong address, int rw)
-{
- *physical = address;
- *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- return TLBRET_MATCH;
-}
-
-int cpu_openrisc_get_phys_code(OpenRISCCPU *cpu,
- hwaddr *physical,
- int *prot, target_ulong address, int rw)
-{
- int vpn = address >> TARGET_PAGE_BITS;
- int idx = vpn & ITLB_MASK;
- int right = 0;
-
- if ((cpu->env.tlb->itlb[0][idx].mr >> TARGET_PAGE_BITS) != vpn) {
- return TLBRET_NOMATCH;
- }
- if (!(cpu->env.tlb->itlb[0][idx].mr & 1)) {
- return TLBRET_INVALID;
- }
-
- if (cpu->env.sr & SR_SM) { /* supervisor mode */
- if (cpu->env.tlb->itlb[0][idx].tr & SXE) {
- right |= PAGE_EXEC;
- }
- } else {
- if (cpu->env.tlb->itlb[0][idx].tr & UXE) {
- right |= PAGE_EXEC;
- }
- }
-
- if ((rw & 2) && ((right & PAGE_EXEC) == 0)) {
- return TLBRET_BADADDR;
- }
-
- *physical = (cpu->env.tlb->itlb[0][idx].tr & TARGET_PAGE_MASK) |
- (address & (TARGET_PAGE_SIZE-1));
- *prot = right;
- return TLBRET_MATCH;
-}
-
-int cpu_openrisc_get_phys_data(OpenRISCCPU *cpu,
- hwaddr *physical,
- int *prot, target_ulong address, int rw)
-{
- int vpn = address >> TARGET_PAGE_BITS;
- int idx = vpn & DTLB_MASK;
- int right = 0;
-
- if ((cpu->env.tlb->dtlb[0][idx].mr >> TARGET_PAGE_BITS) != vpn) {
- return TLBRET_NOMATCH;
- }
- if (!(cpu->env.tlb->dtlb[0][idx].mr & 1)) {
- return TLBRET_INVALID;
- }
-
- if (cpu->env.sr & SR_SM) { /* supervisor mode */
- if (cpu->env.tlb->dtlb[0][idx].tr & SRE) {
- right |= PAGE_READ;
- }
- if (cpu->env.tlb->dtlb[0][idx].tr & SWE) {
- right |= PAGE_WRITE;
- }
- } else {
- if (cpu->env.tlb->dtlb[0][idx].tr & URE) {
- right |= PAGE_READ;
- }
- if (cpu->env.tlb->dtlb[0][idx].tr & UWE) {
- right |= PAGE_WRITE;
- }
- }
-
- if (!(rw & 1) && ((right & PAGE_READ) == 0)) {
- return TLBRET_BADADDR;
- }
- if ((rw & 1) && ((right & PAGE_WRITE) == 0)) {
- return TLBRET_BADADDR;
- }
-
- *physical = (cpu->env.tlb->dtlb[0][idx].tr & TARGET_PAGE_MASK) |
- (address & (TARGET_PAGE_SIZE-1));
- *prot = right;
- return TLBRET_MATCH;
-}
-
-static int cpu_openrisc_get_phys_addr(OpenRISCCPU *cpu,
- hwaddr *physical,
- int *prot, target_ulong address,
- int rw)
-{
- int ret = TLBRET_MATCH;
-
- if (rw == 2) { /* ITLB */
- *physical = 0;
- ret = cpu->env.tlb->cpu_openrisc_map_address_code(cpu, physical,
- prot, address, rw);
- } else { /* DTLB */
- ret = cpu->env.tlb->cpu_openrisc_map_address_data(cpu, physical,
- prot, address, rw);
- }
-
- return ret;
-}
-#endif
-
-static void cpu_openrisc_raise_mmu_exception(OpenRISCCPU *cpu,
- target_ulong address,
- int rw, int tlb_error)
-{
- CPUState *cs = CPU(cpu);
- int exception = 0;
-
- switch (tlb_error) {
- default:
- if (rw == 2) {
- exception = EXCP_IPF;
- } else {
- exception = EXCP_DPF;
- }
- break;
-#ifndef CONFIG_USER_ONLY
- case TLBRET_BADADDR:
- if (rw == 2) {
- exception = EXCP_IPF;
- } else {
- exception = EXCP_DPF;
- }
- break;
- case TLBRET_INVALID:
- case TLBRET_NOMATCH:
- /* No TLB match for a mapped address */
- if (rw == 2) {
- exception = EXCP_ITLBMISS;
- } else {
- exception = EXCP_DTLBMISS;
- }
- break;
-#endif
- }
-
- cs->exception_index = exception;
- cpu->env.eear = address;
-}
-
-#ifndef CONFIG_USER_ONLY
-int openrisc_cpu_handle_mmu_fault(CPUState *cs,
- vaddr address, int rw, int mmu_idx)
-{
- OpenRISCCPU *cpu = OPENRISC_CPU(cs);
- int ret = 0;
- hwaddr physical = 0;
- int prot = 0;
-
- ret = cpu_openrisc_get_phys_addr(cpu, &physical, &prot,
- address, rw);
-
- if (ret == TLBRET_MATCH) {
- tlb_set_page(cs, address & TARGET_PAGE_MASK,
- physical & TARGET_PAGE_MASK, prot,
- mmu_idx, TARGET_PAGE_SIZE);
- ret = 0;
- } else if (ret < 0) {
- cpu_openrisc_raise_mmu_exception(cpu, address, rw, ret);
- ret = 1;
- }
-
- return ret;
-}
-#else
-int openrisc_cpu_handle_mmu_fault(CPUState *cs,
- vaddr address, int rw, int mmu_idx)
-{
- OpenRISCCPU *cpu = OPENRISC_CPU(cs);
- int ret = 0;
-
- cpu_openrisc_raise_mmu_exception(cpu, address, rw, ret);
- ret = 1;
-
- return ret;
-}
-#endif
-
-#ifndef CONFIG_USER_ONLY
-hwaddr openrisc_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
-{
- OpenRISCCPU *cpu = OPENRISC_CPU(cs);
- hwaddr phys_addr;
- int prot;
-
- if (cpu_openrisc_get_phys_addr(cpu, &phys_addr, &prot, addr, 0)) {
- return -1;
- }
-
- return phys_addr;
-}
-
-void cpu_openrisc_mmu_init(OpenRISCCPU *cpu)
-{
- cpu->env.tlb = g_malloc0(sizeof(CPUOpenRISCTLBContext));
-
- cpu->env.tlb->cpu_openrisc_map_address_code = &cpu_openrisc_get_phys_nommu;
- cpu->env.tlb->cpu_openrisc_map_address_data = &cpu_openrisc_get_phys_nommu;
-}
-#endif