#ifndef _INCL_LX_LOADER_H_

#define _INCL_LX_LOADER_H_ 1

#ifndef _GNU_SOURCE

#define _GNU_SOURCE

#endif

#include <stdio.h>

#include <stdlib.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

#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 *addr;

size_t size;

} LxMmaps;

{

uint32 ordinal;

const char *name; // can be NULL

void *addr;

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;

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;

// We put the 128 bytes of TLS slots after the TIB structs.

#define LXTIBSIZE (sizeof (LxTIB) + sizeof (LxTIB2) + 128)

{

LxModule *loaded_modules;

LxModule *main_module;

int trace_native;

uint16 original_cs;

uint16 original_ds;

uint16 original_es;

uint16 original_ss;

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).

int (*findSelector)(const uint32 addr, uint16 *outselector, uint16 *outoffset);

void (*freeSelector)(const uint16 selector);

void *(*convert1616to32)(const uint32 addr1616);

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 ...