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Embryo.h File Reference

Embryo virtual machine library. More...

## Data Structures
struct | _Embryo_Version
union | Embryo_Float_Cell

## Macros
#define | EAPI
#define | EMBRYO_VERSION_MAJOR EFL_VERSION_MAJOR
#define | EMBRYO_VERSION_MINOR EFL_VERSION_MINOR
#define | EMBRYO_CELL_NONE 0x7fffffff
| An invalid cell reference.
#define | EMBRYO_FUNCTION_NONE 0x7fffffff /* An invalid/non existent function */
| An invalid/non-existent function.
#define | EMBRYO_FUNCTION_MAIN -1 /* Start at program entry point */
| Start at program entry point. More...
#define | EMBRYO_FUNCTION_CONT -2 /* Continue from last address */
| Continue from last address. More...
#define | EMBRYO_FLOAT_TO_CELL(f) ((Embryo_Float_Cell) f).c
| Float to Embryo_Cell.
#define | EMBRYO_CELL_TO_FLOAT(c) ((Embryo_Float_Cell) c).f
| Embryo_Cell to float.

## Typedefs
typedef struct _Embryo_Version | Embryo_Version
typedef enum _Embryo_Error | Embryo_Error
typedef enum _Embryo_Status | Embryo_Status
typedef unsigned int | Embryo_UCell
typedef int | Embryo_Cell
typedef struct _Embryo_Program | Embryo_Program
typedef int | Embryo_Function

## Enumerations
enum | _Embryo_Error { EMBRYO_ERROR_NONE, EMBRYO_ERROR_EXIT, EMBRYO_ERROR_ASSERT, EMBRYO_ERROR_STACKERR, EMBRYO_ERROR_BOUNDS, EMBRYO_ERROR_MEMACCESS, EMBRYO_ERROR_INVINSTR, EMBRYO_ERROR_STACKLOW, EMBRYO_ERROR_HEAPLOW, EMBRYO_ERROR_CALLBACK, EMBRYO_ERROR_NATIVE, EMBRYO_ERROR_DIVIDE, EMBRYO_ERROR_SLEEP, EMBRYO_ERROR_MEMORY = 16, EMBRYO_ERROR_FORMAT, EMBRYO_ERROR_VERSION, EMBRYO_ERROR_NOTFOUND, EMBRYO_ERROR_INDEX, EMBRYO_ERROR_DEBUG, EMBRYO_ERROR_INIT, EMBRYO_ERROR_USERDATA, EMBRYO_ERROR_INIT_JIT, EMBRYO_ERROR_PARAMS, EMBRYO_ERROR_DOMAIN }
enum | _Embryo_Status { EMBRYO_PROGRAM_FAIL = 0, EMBRYO_PROGRAM_OK = 1, EMBRYO_PROGRAM_SLEEP = 2, EMBRYO_PROGRAM_BUSY = 3, EMBRYO_PROGRAM_TOOLONG = 4 }

## Functions
EAPI int | embryo_init (void)
| Initialises the Embryo library. More...
EAPI int | embryo_shutdown (void)
| Shuts down the Embryo library. More...
EAPI Embryo_Program * | embryo_program_new (void *data, int size)
| Creates a new Embryo program, with bytecode data that can be freed. More...
EAPI Embryo_Program * | embryo_program_const_new (void *data, int size)
| Creates a new Embryo program, with bytecode data that cannot be freed. More...
EAPI Embryo_Program * | embryo_program_load (const char *file)
| Creates a new Embryo program based on the bytecode data stored in the given file. More...
EAPI void | embryo_program_free (Embryo_Program *ep)
| Frees the given Embryo program. More...
EAPI void | embryo_program_native_call_add (Embryo_Program *ep, const char *name, Embryo_Cell(*func)(Embryo_Program *ep, Embryo_Cell *params))
EAPI void | embryo_program_vm_reset (Embryo_Program *ep)
EAPI void | embryo_program_vm_push (Embryo_Program *ep)
| Starts a new virtual machine session for the given program. More...
EAPI void | embryo_program_vm_pop (Embryo_Program *ep)
| Frees the current virtual machine session associated with the given program. More...
EAPI void | embryo_swap_16 (unsigned short *v)
EAPI void | embryo_swap_32 (unsigned int *v)
| Ensures that the given unsigned integer is in the small endian format. More...
EAPI Embryo_Function | embryo_program_function_find (Embryo_Program *ep, const char *name)
| Returns the function in the given program with the given name. More...
EAPI Embryo_Cell | embryo_program_variable_find (Embryo_Program *ep, const char *name)
EAPI int | embryo_program_variable_count_get (Embryo_Program *ep)
| Retrieves the number of public variables in the given program. More...
EAPI Embryo_Cell | embryo_program_variable_get (Embryo_Program *ep, int num)
| Retrieves the location of the public variable in the given program with the given identifier. More...
EAPI void | embryo_program_error_set (Embryo_Program *ep, Embryo_Error error)
EAPI Embryo_Error | embryo_program_error_get (Embryo_Program *ep)
| Retrieves the current error code for the given program. More...
EAPI void | embryo_program_data_set (Embryo_Program *ep, void *data)
EAPI void * | embryo_program_data_get (Embryo_Program *ep)
| Retrieves the data associated to the given program. More...
EAPI const char * | embryo_error_string_get (Embryo_Error error)
| Retrieves a string describing the given error code. More...
EAPI int | embryo_data_string_length_get (Embryo_Program *ep, Embryo_Cell *str_cell)
EAPI void | embryo_data_string_get (Embryo_Program *ep, Embryo_Cell *str_cell, char *dst)
| Copies the string starting at the given cell to the given buffer. More...
EAPI void | embryo_data_string_set (Embryo_Program *ep, const char *src, Embryo_Cell *str_cell)
| Copies string in the given buffer into the virtual machine memory starting at the given cell. More...
EAPI Embryo_Cell * | embryo_data_address_get (Embryo_Program *ep, Embryo_Cell addr)
| Retreives a pointer to the address in the virtual machine given by the given cell. More...
EAPI Embryo_Cell | embryo_data_heap_push (Embryo_Program *ep, int cells)
EAPI void | embryo_data_heap_pop (Embryo_Program *ep, Embryo_Cell down_to)
| Decreases the size of the heap of the given virtual machine down to the given size. More...
EAPI int | embryo_program_recursion_get (Embryo_Program *ep)
EAPI Embryo_Status | embryo_program_run (Embryo_Program *ep, Embryo_Function func)
| Runs the given function of the given Embryo program in the current virtual machine. More...
EAPI Embryo_Cell | embryo_program_return_value_get (Embryo_Program *ep)
| Retreives the return value of the last called function of the given program. More...
EAPI void | embryo_program_max_cycle_run_set (Embryo_Program *ep, int max)
| Sets the maximum number of abstract machine cycles any given program run can execute before being put to sleep and returning. More...
EAPI int | embryo_program_max_cycle_run_get (Embryo_Program *ep)
| Retreives the maximum number of abstract machine cycles a program is allowed to run. More...
EAPI int | embryo_parameter_cell_push (Embryo_Program *ep, Embryo_Cell cell)
EAPI int | embryo_parameter_string_push (Embryo_Program *ep, const char *str)
| Pushes a string onto the function stack to use as a parameter for the next function that is called in the given program. More...
EAPI int | embryo_parameter_cell_array_push (Embryo_Program *ep, Embryo_Cell *cells, int num)
| Pushes an array of Embryo_Cells onto the function stack to be used as parameters for the next function that is called in the given program. More...

## Variables
EAPI Embryo_Version * | embryo_version

## Detailed Description

Embryo virtual machine library.

This file includes the routines needed for Embryo library interaction. This is the only file you need to include.

## Macro Definition Documentation

#define EMBRYO_FUNCTION_MAIN -1 /* Start at program entry point */

Start at program entry point.

For use with embryo_program_run.

Referenced by embryo_program_run().

#define EMBRYO_FUNCTION_CONT -2 /* Continue from last address */

Continue from last address.

For use with embryo_program_run.

Referenced by embryo_program_run().

## Enumeration Type Documentation

enum _Embryo_Error

Enumerator
EMBRYO_ERROR_ASSERT | Forced exit.
EMBRYO_ERROR_STACKERR | Assertion failed.
EMBRYO_ERROR_BOUNDS | Stack/heap collision.
EMBRYO_ERROR_MEMACCESS | Index out of bounds.
EMBRYO_ERROR_INVINSTR | Invalid memory access.
EMBRYO_ERROR_STACKLOW | Invalid instruction.
EMBRYO_ERROR_HEAPLOW | Stack underflow.
EMBRYO_ERROR_CALLBACK | Heap underflow.
EMBRYO_ERROR_NATIVE | No callback, or invalid callback.
EMBRYO_ERROR_DIVIDE | Native function failed.
EMBRYO_ERROR_SLEEP | Divide by zero.
EMBRYO_ERROR_MEMORY | Go into sleepmode - code can be restarted.
EMBRYO_ERROR_FORMAT | Out of memory.
EMBRYO_ERROR_VERSION | Invalid file format.
EMBRYO_ERROR_NOTFOUND | File is for a newer version of the Embryo_Program.
EMBRYO_ERROR_INDEX | Function not found.
EMBRYO_ERROR_DEBUG | Invalid index parameter (bad entry point)
EMBRYO_ERROR_INIT | Debugger cannot run.
EMBRYO_ERROR_USERDATA | Embryo_Program not initialized (or doubly initialized)
EMBRYO_ERROR_INIT_JIT | Unable to set user data field (table full)
EMBRYO_ERROR_PARAMS | Cannot initialize the JIT.
EMBRYO_ERROR_DOMAIN | Parameter error.