aboutsummaryrefslogtreecommitdiff
path: root/target/moxie/helper.c
diff options
context:
space:
mode:
Diffstat (limited to 'target/moxie/helper.c')
-rw-r--r--target/moxie/helper.c120
1 files changed, 0 insertions, 120 deletions
diff --git a/target/moxie/helper.c b/target/moxie/helper.c
deleted file mode 100644
index b1919f6..0000000
--- a/target/moxie/helper.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * Moxie helper routines.
- *
- * Copyright (c) 2008, 2009, 2010, 2013 Anthony Green
- *
- * 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 2.1 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 program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "qemu/osdep.h"
-
-#include "cpu.h"
-#include "mmu.h"
-#include "exec/exec-all.h"
-#include "exec/cpu_ldst.h"
-#include "qemu/host-utils.h"
-#include "exec/helper-proto.h"
-
-void helper_raise_exception(CPUMoxieState *env, int ex)
-{
- CPUState *cs = env_cpu(env);
-
- cs->exception_index = ex;
- /* Stash the exception type. */
- env->sregs[2] = ex;
- /* Stash the address where the exception occurred. */
- cpu_restore_state(cs, GETPC(), true);
- env->sregs[5] = env->pc;
- /* Jump to the exception handline routine. */
- env->pc = env->sregs[1];
- cpu_loop_exit(cs);
-}
-
-uint32_t helper_div(CPUMoxieState *env, uint32_t a, uint32_t b)
-{
- if (unlikely(b == 0)) {
- helper_raise_exception(env, MOXIE_EX_DIV0);
- return 0;
- }
- if (unlikely(a == INT_MIN && b == -1)) {
- return INT_MIN;
- }
-
- return (int32_t)a / (int32_t)b;
-}
-
-uint32_t helper_udiv(CPUMoxieState *env, uint32_t a, uint32_t b)
-{
- if (unlikely(b == 0)) {
- helper_raise_exception(env, MOXIE_EX_DIV0);
- return 0;
- }
- return a / b;
-}
-
-void helper_debug(CPUMoxieState *env)
-{
- CPUState *cs = env_cpu(env);
-
- cs->exception_index = EXCP_DEBUG;
- cpu_loop_exit(cs);
-}
-
-bool moxie_cpu_tlb_fill(CPUState *cs, vaddr address, int size,
- MMUAccessType access_type, int mmu_idx,
- bool probe, uintptr_t retaddr)
-{
- MoxieCPU *cpu = MOXIE_CPU(cs);
- CPUMoxieState *env = &cpu->env;
- MoxieMMUResult res;
- int prot, miss;
-
- address &= TARGET_PAGE_MASK;
- prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
- miss = moxie_mmu_translate(&res, env, address, access_type, mmu_idx);
- if (likely(!miss)) {
- tlb_set_page(cs, address, res.phy, prot, mmu_idx, TARGET_PAGE_SIZE);
- return true;
- }
- if (probe) {
- return false;
- }
-
- cs->exception_index = MOXIE_EX_MMU_MISS;
- cpu_loop_exit_restore(cs, retaddr);
-}
-
-void moxie_cpu_do_interrupt(CPUState *cs)
-{
- switch (cs->exception_index) {
- case MOXIE_EX_BREAK:
- break;
- default:
- break;
- }
-}
-
-hwaddr moxie_cpu_get_phys_page_debug(CPUState *cs, vaddr addr)
-{
- MoxieCPU *cpu = MOXIE_CPU(cs);
- uint32_t phy = addr;
- MoxieMMUResult res;
- int miss;
-
- miss = moxie_mmu_translate(&res, &cpu->env, addr, 0, 0);
- if (!miss) {
- phy = res.phy;
- }
- return phy;
-}