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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/alpha/mem_helper.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/alpha/mem_helper.c')
-rw-r--r--target/alpha/mem_helper.c89
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 */