ac_decoder.c File Reference

Creates the decoder for the target ISA. More...

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "ac_decoder.h"

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Defines
#define	BUFFER(index)   ((index<*quant) ? (buffer[index]) : (*quant=ExpandInstrBuffer(index),buffer[index]))
Functions
int	ExpandInstrBuffer (int index)
	External function that updates the instruction buffer pointer, the quantity and the relative index.
unsigned long long	GetBits (unsigned char *buffer, int *quant, int last, int quantity, int sign)
char *	NewString (const char *s)
void	ShowDecField (ac_dec_field *f)
void	ShowDecFormat (ac_dec_format *f)
void	ShowDecodeList (ac_dec_list *l)
void	ShowDecInstr (ac_dec_instr *i)
void	ShowDecoder (ac_decoder *d, unsigned level)
void	MemoryError (char *fileName, long lineNumber, char *functionName)
void	ShowError (char *msg)
int	CompareFields (const void *p1, const void *p2)
	Compare two fields. Used in qsort and bsearch.
int	CheckFields (const ac_dec_field *f1, const ac_dec_field *f2)
void	FreeDecField (ac_dec_field *f)
ac_dec_field *	FindDecField (ac_dec_field *fields, char *name)
ac_dec_field *	PutIDs (ac_dec_format *formats, unsigned nFields)
ac_decoder *	AddToDecoder (ac_decoder *decoder, ac_dec_instr *instruction, ac_dec_field *fields)
ac_decoder_full *	CreateDecoder (ac_dec_format *formats, ac_dec_instr *instructions)
ac_dec_instr *	FindInstruction (ac_decoder_full *decoder, unsigned char *buffer, int quant)
ac_dec_format *	FindFormat (ac_dec_format *formats, char *name)
ac_dec_instr *	GetInstrByID (ac_dec_instr *instr, int id)
unsigned *	DecodeAsInstruction (ac_decoder_full *decoder, ac_dec_instr *instruction, unsigned char *buffer, int quant)
unsigned *	Decode (ac_decoder_full *decoder, unsigned char *buffer, int quant)

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Detailed Description

Creates the decoder for the target ISA.

This file contains the functions needed to create the decoder for the target ISA described in the ArchC file.

Definition in file ac_decoder.c.

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Function Documentation

unsigned* DecodeAsInstruction (  ac_decoder_full *  decoder, ac_dec_instr *  instruction, unsigned char *  buffer, int  quant )

Allocate only the first time Looking for the instruction format structure. Get Format's field list Definition at line 505 of file ac_decoder.c. References ac_dec_field, ac_dec_format, ac_dec_instr, decoder, _ac_dec_instr::format, and GetBits().

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int ExpandInstrBuffer (  int  index  )

External function that updates the instruction buffer pointer, the quantity and the relative index. Function for decoder that updates the instruction buffer pointer, the bytes quantity available and the old relative index. Definition at line 84 of file archc.cpp. References AC_ERROR.

unsigned long long GetBits (  unsigned char *  buffer, int *  quant, int  last, int  quantity, int  sign )

Read the buffer using this macro Definition at line 45 of file ac_decoder.c. Referenced by DecodeAsInstruction().

char* NewString (  const char *  s  )

This function copies a string into a new allocated memory region Parameters: s  The string to be copied Returns: A new copy of the string into a new allocated memory region Definition at line 106 of file ac_decoder.c.

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