hw/ppc: Take QEMU lock when calling ppc_dcr_read/write()
[qemu.git] / scripts / tracetool / transform.py
1 # -*- coding: utf-8 -*-
2
3 """
4 Type-transformation rules.
5 """
6
7 __author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
8 __copyright__ = "Copyright 2012-2016, Lluís Vilanova <vilanova@ac.upc.edu>"
9 __license__ = "GPL version 2 or (at your option) any later version"
10
11 __maintainer__ = "Stefan Hajnoczi"
12 __email__ = "stefanha@linux.vnet.ibm.com"
13
14
15 def _transform_type(type_, trans):
16 if isinstance(trans, str):
17 return trans
18 elif isinstance(trans, dict):
19 if type_ in trans:
20 return _transform_type(type_, trans[type_])
21 elif None in trans:
22 return _transform_type(type_, trans[None])
23 else:
24 return type_
25 elif callable(trans):
26 return trans(type_)
27 else:
28 raise ValueError("Invalid type transformation rule: %s" % trans)
29
30
31 def transform_type(type_, *trans):
32 """Return a new type transformed according to the given rules.
33
34 Applies each of the transformation rules in trans in order.
35
36 If an element of trans is a string, return it.
37
38 If an element of trans is a function, call it with type_ as its only
39 argument.
40
41 If an element of trans is a dict, search type_ in its keys. If type_ is
42 a key, use the value as a transformation rule for type_. Otherwise, if
43 None is a key use the value as a transformation rule for type_.
44
45 Otherwise, return type_.
46
47 Parameters
48 ----------
49 type_ : str
50 Type to transform.
51 trans : list of function or dict
52 Type transformation rules.
53 """
54 if len(trans) == 0:
55 raise ValueError
56 res = type_
57 for t in trans:
58 res = _transform_type(res, t)
59 return res
60
61
62 ##################################################
63 # tcg -> host
64
65 def _tcg_2_host(type_):
66 if type_ == "TCGv":
67 # force a fixed-size type (target-independent)
68 return "uint64_t"
69 else:
70 return type_
71
72 TCG_2_HOST = {
73 "TCGv_i32": "uint32_t",
74 "TCGv_i64": "uint64_t",
75 "TCGv_ptr": "void *",
76 None: _tcg_2_host,
77 }
78
79
80 ##################################################
81 # host -> host compatible with tcg sizes
82
83 HOST_2_TCG_COMPAT = {
84 "uint8_t": "uint32_t",
85 "uint16_t": "uint32_t",
86 }
87
88
89 ##################################################
90 # host/tcg -> tcg
91
92 def _host_2_tcg(type_):
93 if type_.startswith("TCGv"):
94 return type_
95 raise ValueError("Don't know how to translate '%s' into a TCG type\n" % type_)
96
97 HOST_2_TCG = {
98 "uint32_t": "TCGv_i32",
99 "uint64_t": "TCGv_i64",
100 "void *" : "TCGv_ptr",
101 "CPUArchState *": "TCGv_env",
102 None: _host_2_tcg,
103 }
104
105
106 ##################################################
107 # tcg -> tcg helper definition
108
109 def _tcg_2_helper_def(type_):
110 if type_ == "TCGv":
111 return "target_ulong"
112 else:
113 return type_
114
115 TCG_2_TCG_HELPER_DEF = {
116 "TCGv_i32": "uint32_t",
117 "TCGv_i64": "uint64_t",
118 "TCGv_ptr": "void *",
119 None: _tcg_2_helper_def,
120 }
121
122
123 ##################################################
124 # tcg -> tcg helper declaration
125
126 def _tcg_2_tcg_helper_decl_error(type_):
127 raise ValueError("Don't know how to translate type '%s' into a TCG helper declaration type\n" % type_)
128
129 TCG_2_TCG_HELPER_DECL = {
130 "TCGv" : "tl",
131 "TCGv_ptr": "ptr",
132 "TCGv_i32": "i32",
133 "TCGv_i64": "i64",
134 "TCGv_env": "env",
135 None: _tcg_2_tcg_helper_decl_error,
136 }
137
138
139 ##################################################
140 # host/tcg -> tcg temporal constant allocation
141
142 def _host_2_tcg_tmp_new(type_):
143 if type_.startswith("TCGv"):
144 return "tcg_temp_new_nop"
145 raise ValueError("Don't know how to translate type '%s' into a TCG temporal allocation" % type_)
146
147 HOST_2_TCG_TMP_NEW = {
148 "uint32_t": "tcg_const_i32",
149 "uint64_t": "tcg_const_i64",
150 "void *" : "tcg_const_ptr",
151 None: _host_2_tcg_tmp_new,
152 }
153
154
155 ##################################################
156 # host/tcg -> tcg temporal constant deallocation
157
158 def _host_2_tcg_tmp_free(type_):
159 if type_.startswith("TCGv"):
160 return "tcg_temp_free_nop"
161 raise ValueError("Don't know how to translate type '%s' into a TCG temporal deallocation" % type_)
162
163 HOST_2_TCG_TMP_FREE = {
164 "uint32_t": "tcg_temp_free_i32",
165 "uint64_t": "tcg_temp_free_i64",
166 "void *" : "tcg_temp_free_ptr",
167 None: _host_2_tcg_tmp_free,
168 }