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10ec5117 AG |
1 | /* |
2 | * S/390 helper routines | |
3 | * | |
4 | * Copyright (c) 2009 Alexander Graf | |
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 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, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include "exec.h" | |
22 | ||
23 | /*****************************************************************************/ | |
24 | /* Softmmu support */ | |
25 | #if !defined (CONFIG_USER_ONLY) | |
26 | ||
27 | #define MMUSUFFIX _mmu | |
28 | ||
29 | #define SHIFT 0 | |
30 | #include "softmmu_template.h" | |
31 | ||
32 | #define SHIFT 1 | |
33 | #include "softmmu_template.h" | |
34 | ||
35 | #define SHIFT 2 | |
36 | #include "softmmu_template.h" | |
37 | ||
38 | #define SHIFT 3 | |
39 | #include "softmmu_template.h" | |
40 | ||
41 | /* try to fill the TLB and return an exception if error. If retaddr is | |
42 | NULL, it means that the function was called in C code (i.e. not | |
43 | from generated code or from helper.c) */ | |
44 | /* XXX: fix it to restore all registers */ | |
45 | void tlb_fill (target_ulong addr, int is_write, int mmu_idx, void *retaddr) | |
46 | { | |
47 | TranslationBlock *tb; | |
48 | CPUState *saved_env; | |
49 | unsigned long pc; | |
50 | int ret; | |
51 | ||
52 | /* XXX: hack to restore env in all cases, even if not called from | |
53 | generated code */ | |
54 | saved_env = env; | |
55 | env = cpu_single_env; | |
56 | ret = cpu_s390x_handle_mmu_fault(env, addr, is_write, mmu_idx, 1); | |
57 | if (unlikely(ret != 0)) { | |
58 | if (likely(retaddr)) { | |
59 | /* now we have a real cpu fault */ | |
60 | pc = (unsigned long)retaddr; | |
61 | tb = tb_find_pc(pc); | |
62 | if (likely(tb)) { | |
63 | /* the PC is inside the translated code. It means that we have | |
64 | a virtual CPU fault */ | |
65 | cpu_restore_state(tb, env, pc, NULL); | |
66 | } | |
67 | } | |
68 | /* XXX */ | |
69 | /* helper_raise_exception_err(env->exception_index, env->error_code); */ | |
70 | } | |
71 | env = saved_env; | |
72 | } | |
73 | ||
74 | #endif |