| 1 | /* |
| 2 | * Helpers for loads and stores |
| 3 | * |
| 4 | * Copyright (c) 2007 Jocelyn Mayer |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 18 | */ |
| 19 | |
| 20 | #include "qemu/osdep.h" |
| 21 | #include "cpu.h" |
| 22 | #include "exec/helper-proto.h" |
| 23 | #include "accel/tcg/cpu-ldst.h" |
| 24 | #include "accel/tcg/cpu-loop.h" |
| 25 | |
| 26 | static void do_unaligned_access(CPUAlphaState *env, vaddr addr, uintptr_t retaddr) |
| 27 | { |
| 28 | CPUState *cs = env_cpu(env); |
| 29 | MemOpIdx oi = make_memop_idx(MO_LEUL, cpu_mmu_index(cs, true)); |
| 30 | uint64_t pc; |
| 31 | uint32_t insn; |
| 32 | |
| 33 | cpu_restore_state(env_cpu(env), retaddr); |
| 34 | |
| 35 | pc = env->pc; |
| 36 | insn = cpu_ldl_code_mmu(env, pc, oi, retaddr); |
| 37 | |
| 38 | env->trap_arg0 = addr; |
| 39 | env->trap_arg1 = insn >> 26; /* opcode */ |
| 40 | env->trap_arg2 = (insn >> 21) & 31; /* dest regno */ |
| 41 | } |
| 42 | |
| 43 | #ifdef CONFIG_USER_ONLY |
| 44 | void alpha_cpu_record_sigbus(CPUState *cs, vaddr addr, |
| 45 | MMUAccessType access_type, uintptr_t retaddr) |
| 46 | { |
| 47 | do_unaligned_access(cpu_env(cs), addr, retaddr); |
| 48 | } |
| 49 | #else |
| 50 | void alpha_cpu_do_unaligned_access(CPUState *cs, vaddr addr, |
| 51 | MMUAccessType access_type, |
| 52 | int mmu_idx, uintptr_t retaddr) |
| 53 | { |
| 54 | CPUAlphaState *env = cpu_env(cs); |
| 55 | |
| 56 | do_unaligned_access(env, addr, retaddr); |
| 57 | cs->exception_index = EXCP_UNALIGN; |
| 58 | env->error_code = 0; |
| 59 | cpu_loop_exit(cs); |
| 60 | } |
| 61 | |
| 62 | void alpha_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr, |
| 63 | vaddr addr, unsigned size, |
| 64 | MMUAccessType access_type, |
| 65 | int mmu_idx, MemTxAttrs attrs, |
| 66 | MemTxResult response, uintptr_t retaddr) |
| 67 | { |
| 68 | CPUAlphaState *env = cpu_env(cs); |
| 69 | |
| 70 | env->trap_arg0 = addr; |
| 71 | env->trap_arg1 = access_type == MMU_DATA_STORE ? 1 : 0; |
| 72 | cs->exception_index = EXCP_MCHK; |
| 73 | env->error_code = 0; |
| 74 | cpu_loop_exit_restore(cs, retaddr); |
| 75 | } |
| 76 | #endif /* CONFIG_USER_ONLY */ |