diff options
author | Thomas Huth <thuth@redhat.com> | 2016-10-11 08:56:52 +0200 |
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committer | Thomas Huth <thuth@redhat.com> | 2016-12-20 21:52:12 +0100 |
commit | fcf5ef2ab52c621a4617ebbef36bf43b4003f4c0 (patch) | |
tree | 2b450d96b01455df8ed908bf8f26ddc388a03380 /target-openrisc/mmu.c | |
parent | 82ecffa8c050bf5bbc13329e9b65eac1caa5b55c (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> [crisµblaze 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.c | 238 |
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 |