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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include "sdl1rwops.h"
#include "debug.h"
#include "wrapper.h"
#ifdef BOX32
#include "wrapper32.h"
#include "sdl1align32.h"
#endif
#include "box64context.h"
#include "x64emu.h"
#include "emu/x64emu_private.h"
#include "librarian/library_private.h"
#include "bridge.h"
#include "callback.h"
typedef struct SDL1_RWops_s SDL1_RWops_t;
typedef int32_t (*sdl1_seek)(SDL1_RWops_t *context, int32_t offset, int32_t whence);
typedef int32_t (*sdl1_read)(SDL1_RWops_t *context, void *ptr, int32_t size, int32_t maxnum);
typedef int32_t (*sdl1_write)(SDL1_RWops_t *context, const void *ptr, int32_t size, int32_t num);
typedef int32_t (*sdl1_close)(SDL1_RWops_t *context);
#define BOX64RW 0xBECF4572 // random signature value
typedef struct SDL1_RWops_s {
sdl1_seek seek;
sdl1_read read;
sdl1_write write;
sdl1_close close;
uint32_t type;
union {
struct {
int autoclose;
FILE *fp;
} stdio;
struct {
uint8_t *base;
uint8_t *here;
uint8_t *stop;
} mem;
struct {
void *data1;
} unknown;
struct {
SDL1_RWops_t *orig;
sdl1_freerw custom_free;
} my;
} hidden;
} SDL1_RWops_t;
#ifdef BOX32
#define SUPER() \
if (box64_is32bits) { \
GO(seek, iFpii_32) \
GO(read, iFppii_32) \
GO(write, iFppii_32) \
GO(close, iFp_32) \
} else { \
GO(seek, iFpii) \
GO(read, iFppii) \
GO(write, iFppii) \
GO(close, iFp) \
}
#else
#define SUPER() \
GO(seek, iFpii) \
GO(read, iFppii) \
GO(write, iFppii) \
GO(close, iFp)
#endif
EXPORT int32_t my_native_seek(SDL1_RWops_t *context, int32_t offset, int32_t whence)
{
#ifdef BOX32
if(box64_is32bits) {
inplace_SDL_RWops_to_64(context);
int ret = context->hidden.my.orig->seek(context->hidden.my.orig, offset, whence);
inplace_SDL_RWops_to_32(context);
return ret;
}
#endif
return context->hidden.my.orig->seek(context->hidden.my.orig, offset, whence);
}
EXPORT int32_t my_native_read(SDL1_RWops_t *context, void *ptr, int32_t size, int32_t maxnum)
{
#ifdef BOX32
if(box64_is32bits) {
inplace_SDL_RWops_to_64(context);
int ret = context->hidden.my.orig->read(context->hidden.my.orig, ptr, size, maxnum);
inplace_SDL_RWops_to_32(context);
return ret;
}
#endif
return context->hidden.my.orig->read(context->hidden.my.orig, ptr, size, maxnum);
}
EXPORT int32_t my_native_write(SDL1_RWops_t *context, const void *ptr, int32_t size, int32_t num)
{
#ifdef BOX32
if(box64_is32bits) {
inplace_SDL_RWops_to_64(context);
int ret = context->hidden.my.orig->write(context->hidden.my.orig, ptr, size, num);
inplace_SDL_RWops_to_32(context);
return ret;
}
#endif
return context->hidden.my.orig->write(context->hidden.my.orig, ptr, size, num);
}
EXPORT int32_t my_native_close(SDL1_RWops_t *context)
{
#ifdef BOX32
if(box64_is32bits) {
inplace_SDL_RWops_to_64(context);
}
#endif
int32_t ret = context->hidden.my.orig->close(context->hidden.my.orig);
context->hidden.my.custom_free(context);
return ret;
}
EXPORT int32_t my_emulated_seek(SDL1_RWops_t *context, int32_t offset, int32_t whence)
{
return (int32_t)RunFunctionFmt((uintptr_t)context->hidden.my.orig->seek, "pii", context->hidden.my.orig, offset, whence);
}
EXPORT int32_t my_emulated_read(SDL1_RWops_t *context, void *ptr, int32_t size, int32_t maxnum)
{
return (int32_t)RunFunctionFmt((uintptr_t)context->hidden.my.orig->read, "ppii", context->hidden.my.orig, ptr, size, maxnum);
}
EXPORT int32_t my_emulated_write(SDL1_RWops_t *context, const void *ptr, int32_t size, int32_t num)
{
return (int32_t)RunFunctionFmt((uintptr_t)context->hidden.my.orig->write, "ppii", context->hidden.my.orig, ptr, size, num);
}
EXPORT int32_t my_emulated_close(SDL1_RWops_t *context)
{
return (int32_t)RunFunctionFmt((uintptr_t)context->hidden.my.orig->close, "p", context->hidden.my.orig);
}
SDL1_RWops_t* AddNativeRW(x64emu_t* emu, SDL1_RWops_t* ops)
{
if(!ops)
return NULL;
uintptr_t fnc;
bridge_t* system = emu->context->system;
sdl1_allocrw Alloc = (sdl1_allocrw)emu->context->sdl1allocrw;
sdl1_freerw Free = (sdl1_freerw)emu->context->sdl1freerw;
SDL1_RWops_t* newrw = Alloc();
newrw->type = BOX64RW;
newrw->hidden.my.orig = ops;
newrw->hidden.my.custom_free = Free;
// get or create wrapper, add it to map and change to the emulated one if rw
#define GO(A, W) \
fnc = AddCheckBridge(system, W, my_native_##A, 0, NULL); \
newrw->A = (sdl1_##A)fnc;
SUPER()
#undef GO
return newrw;
}
// put Native RW function, wrapping emulated (callback style) ones if needed
SDL1_RWops_t* RWNativeStart(x64emu_t* emu, SDL1_RWops_t* ops)
{
if(!ops)
return NULL;
if(ops->type == BOX64RW)
return ops->hidden.my.orig;
sdl1_allocrw Alloc = (sdl1_allocrw)emu->context->sdl1allocrw;
SDL1_RWops_t* newrw = Alloc();
newrw->type = BOX64RW;
newrw->hidden.my.orig = ops;
newrw->hidden.my.custom_free = (sdl1_freerw)emu->context->sdl1freerw;
// create wrapper
#define GO(A, W) \
newrw->A = my_emulated_##A;
SUPER()
#undef GO
return newrw;
}
// put back emulated function back in place
void RWNativeEnd(SDL1_RWops_t* ops)
{
if(!ops)
return;
if(ops->type != BOX64RW)
return; // do nothing
ops->hidden.my.custom_free(ops);
}
int32_t RWNativeSeek(SDL1_RWops_t *ops, int32_t offset, int32_t whence)
{
return ops->seek(ops, offset, whence);
}
uint32_t RWNativeRead(SDL1_RWops_t* ops, void* ptr, uint32_t size, uint32_t maxnum)
{
return ops->read(ops, ptr, size, maxnum);
}
int32_t RWNativeWrite(SDL1_RWops_t *ops, const void *ptr, int32_t size, int32_t num)
{
return ops->write(ops, ptr, size, num);
}
int32_t RWNativeClose(SDL1_RWops_t* ops)
{
return ops->close(ops);
}
void RWSetType(SDL1_RWops_t* r, int awesome)
{
if(r)
r->type = awesome; // I like shoot'em up :D
}
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