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add API for side modules

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vms 2019-08-20 10:37:55 +02:00
parent 51acd7a28a
commit cf0d0fa94b
2 changed files with 62 additions and 0 deletions
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1
main.c
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@ -1,5 +1,6 @@
#include "sdk/allocator.h"
#include "sdk/logger.h"
#include "sdk/side_module_api.h"
char *invoke(const char *str, int length) {

61
sdk/side_module_api.h Normal file
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#ifndef C_TEMPLATE_SIDE_MODULE_API_H
#define C_TEMPLATE_SIDE_MODULE_API_H
#include <stdlib.h>
#include <string.h>
/*
* Concatenate preprocessor tokens A and B without expanding macro definitions
* (however, if invoked from a macro, macro arguments are expanded).
*/
#define PPCAT_NX(A, B) A ## B
/*
* Concatenate preprocessor tokens A and B after macro-expanding them.
*/
#define PPCAT(A, B) PPCAT_NX(A, B)
/*
* Turn A into a string literal without expanding macro definitions
* (however, if invoked from a macro, macro arguments are expanded).
*/
#define STRINGIZE_NX(A) #A
/*
* Turn A into a string literal after macro-expanding it.
*/
#define STRINGIZE(A) STRINGIZE_NX(A)
#define __MODULE_IMPORT(module_name) \
void module_name ## _store(char *ptr, char byte) __attribute__((__import_module__(#module_name), __import_name__(STRINGIZE(PPCAT(module_name, _store))))); \
unsigned char module_name ## _load(char *ptr) __attribute__((__import_module__(#module_name), __import_name__(STRINGIZE(PPCAT(module_name, _load))))); \
char* module_name ## _allocate(unsigned int size) __attribute__((__import_module__(#module_name), __import_name__(STRINGIZE(PPCAT(module_name, _allocate))))); \
void module_name ## _deallocate(char *ptr, unsigned int size) __attribute__((__import_module__(#module_name), __import_name__(STRINGIZE(PPCAT(module_name, _deallocate))))); \
char* module_name ## _invoke(char *ptr, int size) __attribute__((__import_module__(#module_name), __import_name__(STRINGIZE(PPCAT(module_name, _invoke))))); \
\
char * module_name ## _call(const char *ptr, int length) { \
char *request_ptr = module_name ## _allocate(length); \
\
for(int i = 0; i < length; ++i) { \
module_name ## _store(request_ptr + i, ptr[i]); \
} \
char *result = module_name ## _invoke(request_ptr, length); \
\
unsigned int result_size = 0; \
char *result_out = malloc(result_size + 4);\
for (int i = 0; i < 4; ++i) { \
result_out[i] = result[i]; \
result_size = result_size | ((unsigned int)result[i] << 8*i); \
} \
\
for(int i = 0; i < result_size; ++i) {\
result_out[i] = module_name ## _load(result + 4 + i);\
}\
\
module_name ## _deallocate(result, result_size); \
\
return result_out;\
}
#endif //C_TEMPLATE_SIDE_MODULE_API_H