/
lx_loader.h
240 lines (212 loc) · 5.69 KB
/
lx_loader.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
#ifndef _INCL_LX_LOADER_H_
#define _INCL_LX_LOADER_H_ 1
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
typedef uint8_t uint8;
typedef uint16_t uint16;
typedef uint32_t uint32;
typedef int8_t sint8;
typedef int16_t sint16;
typedef int32_t sint32;
typedef unsigned int uint;
#ifndef _STUBBED
#define _STUBBED(x, what) do { \
static int seen_this = 0; \
if (!seen_this) { \
seen_this = 1; \
fprintf(stderr, "2INE " what ": %s at %s (%s:%d)\n", x, __FUNCTION__, __FILE__, __LINE__); \
} \
} while (0)
#endif
#if 0
#ifndef STUBBED
#define STUBBED(x) _STUBBED(x, "STUBBED")
#endif
#ifndef FIXME
#define FIXME(x) _STUBBED(x, "FIXME")
#endif
#endif
#ifndef STUBBED
#define STUBBED(x) do {} while (0)
#endif
#ifndef FIXME
#define FIXME(x) do {} while (0)
#endif
#pragma pack(push, 1)
typedef struct LxHeader
{
uint8 magic_l;
uint8 magic_x;
uint8 byte_order;
uint8 word_order;
uint32 lx_version;
uint16 cpu_type;
uint16 os_type;
uint32 module_version;
uint32 module_flags;
uint32 module_num_pages;
uint32 eip_object;
uint32 eip;
uint32 esp_object;
uint32 esp;
uint32 page_size;
uint32 page_offset_shift;
uint32 fixup_section_size;
uint32 fixup_section_checksum;
uint32 loader_section_size;
uint32 loader_section_checksum;
uint32 object_table_offset;
uint32 module_num_objects;
uint32 object_page_table_offset;
uint32 object_iter_pages_offset;
uint32 resource_table_offset;
uint32 num_resource_table_entries;
uint32 resident_name_table_offset;
uint32 entry_table_offset;
uint32 module_directives_offset;
uint32 num_module_directives;
uint32 fixup_page_table_offset;
uint32 fixup_record_table_offset;
uint32 import_module_table_offset;
uint32 num_import_mod_entries;
uint32 import_proc_table_offset;
uint32 per_page_checksum_offset;
uint32 data_pages_offset;
uint32 num_preload_pages;
uint32 non_resident_name_table_offset;
uint32 non_resident_name_table_len;
uint32 non_resident_name_table_checksum;
uint32 auto_ds_object_num;
uint32 debug_info_offset;
uint32 debug_info_len;
uint32 num_instance_preload;
uint32 num_instance_demand;
uint32 heapsize;
} LxHeader;
typedef struct LxObjectTableEntry
{
uint32 virtual_size;
uint32 reloc_base_addr;
uint32 object_flags;
uint32 page_table_index;
uint32 num_page_table_entries;
uint32 reserved;
} LxObjectTableEntry;
typedef struct LxObjectPageTableEntry
{
uint32 page_data_offset;
uint16 data_size;
uint16 flags;
} LxObjectPageTableEntry;
typedef struct LxResourceTableEntry
{
uint16 type_id;
uint16 name_id;
uint32 resource_size;
uint16 object;
uint32 offset;
} LxResourceTableEntry;
#pragma pack(pop)
typedef struct LxMmaps
{
void *mapped;
void *addr;
size_t size;
uint16 alias; // 16:16 alias, if one.
} LxMmaps;
typedef struct LxExport
{
uint32 ordinal;
const char *name; // can be NULL
void *addr;
const LxMmaps *object;
} LxExport;
struct LxModule;
typedef struct LxModule LxModule;
struct LxModule
{
LxHeader lx;
uint32 refcount;
char name[256]; // !!! FIXME: allocate this.
LxModule **dependencies;
LxMmaps *mmaps;
const LxExport *exports;
uint32 num_exports;
void *nativelib;
uint32 eip;
uint32 esp;
int initialized;
char *os2path; // absolute path to module, in OS/2 format
// !!! FIXME: put this elsewhere?
uint32 signal_exception_focus_count;
LxModule *prev; // all loaded modules are in a doubly-linked list.
LxModule *next; // all loaded modules are in a doubly-linked list.
};
#pragma pack(push, 1)
typedef struct LxTIB2
{
uint32 tib2_ultid;
uint32 tib2_ulpri;
uint32 tib2_version;
uint16 tib2_usMCCount;
uint16 tib2_fMCForceFlag;
} LxTIB2;
typedef struct LxTIB
{
void *tib_pexchain;
void *tib_pstack;
void *tib_pstacklimit;
LxTIB2 *tib_ptib2;
uint32 tib_version;
uint32 tib_ordinal;
} LxTIB;
typedef struct LxPIB
{
uint32 pib_ulpid;
uint32 pib_ulppid;
void *pib_hmte;
char *pib_pchcmd;
char *pib_pchenv;
uint32 pib_flstatus;
uint32 pib_ultype;
} LxPIB;
#pragma pack(pop)
// We put the 128 bytes of TLS slots after the TIB structs.
#define LXTIBSIZE (sizeof (LxTIB) + sizeof (LxTIB2) + 128)
typedef struct LxLoaderState
{
LxModule *loaded_modules;
LxModule *main_module;
uint8 main_tibspace[LXTIBSIZE];
LxPIB pib;
int subprocess;
int running;
int trace_native;
uint16 original_cs;
uint16 original_ss;
uint16 original_ds;
uint32 ldt[8192];
char *libpath;
uint32 libpathlen;
uint32 *tlspage;
uint32 tlsmask; // one bit for each TLS slot in use.
uint8 tlsallocs[32]; // number of TLS slots allocated in one block, indexed by starting block (zero if not the starting block).
uint16 (*initOs2Tib)(uint8 *tibspace, void *_topOfStack, const size_t stacklen, const uint32 tid);
void (*deinitOs2Tib)(const uint16 selector);
int (*findSelector)(const uint32 addr, uint16 *outselector, uint16 *outoffset);
void (*freeSelector)(const uint16 selector);
void *(*convert1616to32)(const uint32 addr1616);
LxModule *(*loadModule)(const char *modname);
int (*locatePathCaseInsensitive)(char *buf);
char *(*makeUnixPath)(const char *os2path, uint32 *err);
char *(*makeOS2Path)(const char *fname);
} LxLoaderState;
typedef const LxExport *(*LxNativeModuleInitEntryPoint)(LxLoaderState *lx_state, uint32 *lx_num_exports);
typedef void (*LxNativeModuleDeinitEntryPoint)(void);
#endif
// end of lx_loader.h ...