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/alpha/mem_helper.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/alpha/mem_helper.c')
-rw-r--r-- | target/alpha/mem_helper.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/target/alpha/mem_helper.c b/target/alpha/mem_helper.c new file mode 100644 index 0000000000..78a7d45590 --- /dev/null +++ b/target/alpha/mem_helper.c @@ -0,0 +1,89 @@ +/* + * Helpers for loads and stores + * + * Copyright (c) 2007 Jocelyn Mayer + * + * 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/helper-proto.h" +#include "exec/exec-all.h" +#include "exec/cpu_ldst.h" + +/* Softmmu support */ +#ifndef CONFIG_USER_ONLY +void alpha_cpu_do_unaligned_access(CPUState *cs, vaddr addr, + MMUAccessType access_type, + int mmu_idx, uintptr_t retaddr) +{ + AlphaCPU *cpu = ALPHA_CPU(cs); + CPUAlphaState *env = &cpu->env; + uint64_t pc; + uint32_t insn; + + if (retaddr) { + cpu_restore_state(cs, retaddr); + } + + pc = env->pc; + insn = cpu_ldl_code(env, pc); + + env->trap_arg0 = addr; + env->trap_arg1 = insn >> 26; /* opcode */ + env->trap_arg2 = (insn >> 21) & 31; /* dest regno */ + cs->exception_index = EXCP_UNALIGN; + env->error_code = 0; + cpu_loop_exit(cs); +} + +void alpha_cpu_unassigned_access(CPUState *cs, hwaddr addr, + bool is_write, bool is_exec, int unused, + unsigned size) +{ + AlphaCPU *cpu = ALPHA_CPU(cs); + CPUAlphaState *env = &cpu->env; + + env->trap_arg0 = addr; + env->trap_arg1 = is_write ? 1 : 0; + cs->exception_index = EXCP_MCHK; + env->error_code = 0; + + /* ??? We should cpu_restore_state to the faulting insn, but this hook + does not have access to the retaddr value from the original helper. + It's all moot until the QEMU PALcode grows an MCHK handler. */ + + cpu_loop_exit(cs); +} + +/* try to fill the TLB and return an exception if error. If retaddr is + NULL, it means that the function was called in C code (i.e. not + from generated code or from helper.c) */ +/* XXX: fix it to restore all registers */ +void tlb_fill(CPUState *cs, target_ulong addr, MMUAccessType access_type, + int mmu_idx, uintptr_t retaddr) +{ + int ret; + + ret = alpha_cpu_handle_mmu_fault(cs, addr, access_type, mmu_idx); + if (unlikely(ret != 0)) { + if (retaddr) { + cpu_restore_state(cs, retaddr); + } + /* Exception index and error code are already set */ + cpu_loop_exit(cs); + } +} +#endif /* CONFIG_USER_ONLY */ |