mruby/c VM Source Code release 3.4
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load.c File Reference

mruby bytecode loader. More...

#include "mrubyc.h"
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Enumerations

enum  irep_pool_type {
  IREP_TT_STR = 0 , IREP_TT_SSTR = 2 , IREP_TT_INT32 = 1 , IREP_TT_INT64 = 3 ,
  IREP_TT_FLOAT = 5
}

Functions

static int load_header (struct VM *vm, const uint8_t *bin)
static mrbc_irep * load_irep_1 (struct VM *vm, const uint8_t *bin, int *len)
static mrbc_irep * load_irep (struct VM *vm, const uint8_t *bin, int *len)
int mrbc_load_mrb (struct VM *vm, const void *bytecode)
int mrbc_load_irep (struct VM *vm, const void *bytecode)
void mrbc_irep_free (struct IREP *irep)
mrbc_value mrbc_irep_pool_value (struct VM *vm, int n)

Variables

static const char RITE [4] = "RITE"
static const char RITE_VERSION [4] = "0300"
static const int SIZE_RITE_BINARY_HEADER = 20
static const int SIZE_RITE_SECTION_HEADER = 12
static const int SIZE_RITE_CATCH_HANDLER = 13
static const char IREP [4] = "IREP"
static const char END [4] = "END\0"

Detailed Description

mruby bytecode loader. 

Copyright (C) 2015- Kyushu Institute of Technology.
Copyright (C) 2015- Shimane IT Open-Innovation Center.

This file is distributed under BSD 3-Clause License.

Definition in file load.c.

Enumeration Type Documentation

◆ irep_pool_type

enum irep_pool_type

IREP TT

Enumerator
IREP_TT_STR 
IREP_TT_SSTR 
IREP_TT_INT32 
IREP_TT_INT64 
IREP_TT_FLOAT 

Definition at line 39 of file load.c.

Function Documentation

◆ load_header()

int load_header ( struct VM * vm,
const uint8_t * bin )
static

Parse header section.

Parameters
vmA pointer to VM.
binA pointer to RITE header.
Returns
int zero if no error.
Structure
 "RITE"     identifier
 "03"       major version
 "00"       minor version
 0000_0000  total size
 "MATZ"     compiler name
 "0000"     compiler version

Definition at line 73 of file load.c.

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◆ load_irep()

mrbc_irep * load_irep ( struct VM * vm,
const uint8_t * bin,
int * len )
static

Load IREP section.

Parameters
vmA pointer to VM.
binA pointer to RITE ISEQ.
lenReturns the parsed length.
Returns
Pointer to allocated mrbc_irep or NULL

Definition at line 263 of file load.c.

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◆ load_irep_1()

mrbc_irep * load_irep_1 ( struct VM * vm,
const uint8_t * bin,
int * len )
static

read one irep section.

Parameters
vmA pointer to VM.
binA pointer to RITE ISEQ.
lenReturns the parsed length.
Returns
Pointer to allocated mrbc_irep or NULL
 (loop n of child irep below)
 0000_0000      record size
 0000           n of local variable
 0000           n of register
 0000           n of child irep
 0000           n of catch handler
 0000_0000      n of byte code  (ISEQ BLOCK)
 ...            byte codes

 (CATCH HANDLER 13bytes)
 00             type
 0000_0000      begin
 0000_0000      end
 0000_0000      target

 (POOL BLOCK)
 0000           n of pool
 (loop n of pool)
   00           type
   ...  pool data

 (SYMS BLOCK)
 0000           n of symbol
 (loop n of symbol)
   0000 length
   ...  symbol data

Definition at line 129 of file load.c.

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◆ mrbc_irep_free()

void mrbc_irep_free ( struct IREP * irep)

release mrbc_irep holds memory

Parameters
irepPointer to allocated mrbc_irep.

Definition at line 340 of file load.c.

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◆ mrbc_irep_pool_value()

mrbc_value mrbc_irep_pool_value ( struct VM * vm,
int n )

get a mrbc_value in irep pool.

Parameters
vmPointer to VM.
nn'th
Returns
mrbc_value value

Definition at line 360 of file load.c.

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◆ mrbc_load_irep()

int mrbc_load_irep ( struct VM * vm,
const void * bytecode )

Load the IREP section.

Parameters
vmPointer to VM.
bytecodePointer to IREP section.
Returns
int zero if no error.

Definition at line 324 of file load.c.

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◆ mrbc_load_mrb()

int mrbc_load_mrb ( struct VM * vm,
const void * bytecode )

Load the VM bytecode. (full .mrb file)

Parameters
vmPointer to VM.
bytecodePointer to bytecode.
Returns
int zero if no error.

Definition at line 292 of file load.c.

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Variable Documentation

◆ END

const char END[4] = "END\0"
static

Definition at line 35 of file load.c.

◆ IREP

const char IREP[4] = "IREP"
static

Definition at line 34 of file load.c.

◆ RITE

const char RITE[4] = "RITE"
static

Definition at line 29 of file load.c.

◆ RITE_VERSION

const char RITE_VERSION[4] = "0300"
static

Definition at line 30 of file load.c.

◆ SIZE_RITE_BINARY_HEADER

const int SIZE_RITE_BINARY_HEADER = 20
static

Definition at line 31 of file load.c.

◆ SIZE_RITE_CATCH_HANDLER

const int SIZE_RITE_CATCH_HANDLER = 13
static

Definition at line 33 of file load.c.

◆ SIZE_RITE_SECTION_HEADER

const int SIZE_RITE_SECTION_HEADER = 12
static

Definition at line 32 of file load.c.