Merge tag 'linux-user-for-8.0-pull-request' of https://gitlab.com/laurent_vivier...
[qemu.git] / target / alpha / mem_helper.c
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 "exec/exec-all.h"
24 #include "exec/cpu_ldst.h"
25
26 static void do_unaligned_access(CPUAlphaState *env, vaddr addr, uintptr_t retaddr)
27 {
28 uint64_t pc;
29 uint32_t insn;
30
31 cpu_restore_state(env_cpu(env), retaddr);
32
33 pc = env->pc;
34 insn = cpu_ldl_code(env, pc);
35
36 env->trap_arg0 = addr;
37 env->trap_arg1 = insn >> 26; /* opcode */
38 env->trap_arg2 = (insn >> 21) & 31; /* dest regno */
39 }
40
41 #ifdef CONFIG_USER_ONLY
42 void alpha_cpu_record_sigbus(CPUState *cs, vaddr addr,
43 MMUAccessType access_type, uintptr_t retaddr)
44 {
45 AlphaCPU *cpu = ALPHA_CPU(cs);
46 CPUAlphaState *env = &cpu->env;
47
48 do_unaligned_access(env, addr, retaddr);
49 }
50 #else
51 void alpha_cpu_do_unaligned_access(CPUState *cs, vaddr addr,
52 MMUAccessType access_type,
53 int mmu_idx, uintptr_t retaddr)
54 {
55 AlphaCPU *cpu = ALPHA_CPU(cs);
56 CPUAlphaState *env = &cpu->env;
57
58 do_unaligned_access(env, addr, retaddr);
59 cs->exception_index = EXCP_UNALIGN;
60 env->error_code = 0;
61 cpu_loop_exit(cs);
62 }
63
64 void alpha_cpu_do_transaction_failed(CPUState *cs, hwaddr physaddr,
65 vaddr addr, unsigned size,
66 MMUAccessType access_type,
67 int mmu_idx, MemTxAttrs attrs,
68 MemTxResult response, uintptr_t retaddr)
69 {
70 AlphaCPU *cpu = ALPHA_CPU(cs);
71 CPUAlphaState *env = &cpu->env;
72
73 env->trap_arg0 = addr;
74 env->trap_arg1 = access_type == MMU_DATA_STORE ? 1 : 0;
75 cs->exception_index = EXCP_MCHK;
76 env->error_code = 0;
77 cpu_loop_exit_restore(cs, retaddr);
78 }
79 #endif /* CONFIG_USER_ONLY */