Ryan C. Gordon
bee2afe62b
Wanted to do this now before it gets out of hand. Ideally, this can be used for a Winelib-like option eventually, too, where you don't load OS/2 binaries at all but rather compile and link your OS/2-based source code against this API reimplementation.
157 lines
3.5 KiB
C
157 lines
3.5 KiB
C
#ifndef _INCL_LX_LOADER_H_
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#define _INCL_LX_LOADER_H_ 1
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#define _GNU_SOURCE 1
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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typedef uint8_t uint8;
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typedef uint16_t uint16;
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typedef uint32_t uint32;
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typedef int8_t sint8;
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typedef int16_t sint16;
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typedef int32_t sint32;
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typedef unsigned int uint;
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#pragma pack(push, 1)
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typedef struct LxHeader
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{
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uint8 magic_l;
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uint8 magic_x;
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uint8 byte_order;
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uint8 word_order;
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uint32 lx_version;
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uint16 cpu_type;
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uint16 os_type;
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uint32 module_version;
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uint32 module_flags;
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uint32 module_num_pages;
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uint32 eip_object;
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uint32 eip;
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uint32 esp_object;
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uint32 esp;
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uint32 page_size;
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uint32 page_offset_shift;
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uint32 fixup_section_size;
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uint32 fixup_section_checksum;
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uint32 loader_section_size;
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uint32 loader_section_checksum;
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uint32 object_table_offset;
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uint32 module_num_objects;
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uint32 object_page_table_offset;
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uint32 object_iter_pages_offset;
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uint32 resource_table_offset;
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uint32 num_resource_table_entries;
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uint32 resident_name_table_offset;
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uint32 entry_table_offset;
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uint32 module_directives_offset;
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uint32 num_module_directives;
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uint32 fixup_page_table_offset;
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uint32 fixup_record_table_offset;
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uint32 import_module_table_offset;
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uint32 num_import_mod_entries;
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uint32 import_proc_table_offset;
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uint32 per_page_checksum_offset;
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uint32 data_pages_offset;
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uint32 num_preload_pages;
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uint32 non_resident_name_table_offset;
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uint32 non_resident_name_table_len;
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uint32 non_resident_name_table_checksum;
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uint32 auto_ds_object_num;
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uint32 debug_info_offset;
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uint32 debug_info_len;
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uint32 num_instance_preload;
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uint32 num_instance_demand;
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uint32 heapsize;
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} LxHeader;
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typedef struct LxObjectTableEntry
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{
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uint32 virtual_size;
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uint32 reloc_base_addr;
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uint32 object_flags;
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uint32 page_table_index;
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uint32 num_page_table_entries;
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uint32 reserved;
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} LxObjectTableEntry;
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typedef struct LxObjectPageTableEntry
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{
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uint32 page_data_offset;
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uint16 data_size;
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uint16 flags;
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} LxObjectPageTableEntry;
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typedef struct LxResourceTableEntry
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{
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uint16 type_id;
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uint16 name_id;
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uint32 resource_size;
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uint16 object;
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uint32 offset;
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} LxResourceTableEntry;
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#pragma pack(pop)
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typedef struct LxMmaps
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{
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void *addr;
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size_t size;
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} LxMmaps;
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typedef struct LxExportedOrdinal
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{
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uint32 ordinal;
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uint32 addr;
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} LxExportedOrdinal;
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typedef struct LxExportedName
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{
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char name[128]; // !!! FIXME: allocate this.
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uint32 addr;
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} LxExportedName;
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struct LxModule;
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typedef struct LxModule LxModule;
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struct LxModule
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{
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LxHeader lx;
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uint32 refcount;
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char name[256]; // !!! FIXME: allocate this.
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LxModule **dependencies;
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LxMmaps *mmaps;
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uint32 num_ordinals;
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LxExportedOrdinal *exported_ordinals;
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uint32 num_names;
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LxExportedName *exported_names;
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void *nativelib;
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uint32 eip;
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uint32 esp;
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int initialized;
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char *env;
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char *cmd;
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char *os2path; // absolute path to module, in OS/2 format
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uint32 signal_exception_focus_count;
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LxModule *prev; // all loaded modules are in a doubly-linked list.
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LxModule *next; // all loaded modules are in a doubly-linked list.
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};
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typedef struct
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{
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LxModule *loaded_modules;
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LxModule *main_module;
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} LxLoaderState;
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typedef LxModule *(*LxNativeReplacementEntryPoint)(LxLoaderState *state);
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#endif
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// end of lx_loader.h ...
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