/*
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/*
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File for analysis of an architecture's instructions in binary format
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File for analysis of an architecture's instructions in binary format
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Julius Baxter, julius.baxter@orsoc.se
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Julius Baxter, julius.baxter@orsoc.se
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*/
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*/
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#include<stdio.h>
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#include<stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <string.h>
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#include <string.h>
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#include <stdint.h>
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#include <stdint.h>
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#include <arpa/inet.h> // for htonl()
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#include <arpa/inet.h> // for htonl()
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#include "insnanalysis.h"
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#include "insnanalysis.h"
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// Access to list management functions
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// Access to list management functions
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#include "insn-lists.h"
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#include "insn-lists.h"
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int analyse_insn(instruction insn,
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int analyse_insn(instruction insn,
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instruction_properties *insn_props)
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instruction_properties *insn_props)
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{
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{
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// For now no other instruction sets supported
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// For now no other instruction sets supported
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return or1k_32_analyse_insn(insn, insn_props);
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return or1k_32_analyse_insn(insn, insn_props);
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}
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}
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void print_insn(instruction_properties *insn_props)
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void print_insn(instruction_properties *insn_props)
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{
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{
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if (insn_props->insn_string != NULL)
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if (insn_props->insn_string != NULL)
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printf("%s", insn_props->insn_string);
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printf("%s", insn_props->insn_string);
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}
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}
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void collect_stats(instruction insn,
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void collect_stats(instruction insn,
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instruction_properties *insn_props)
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instruction_properties *insn_props)
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{
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{
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or1k_32_collect_stats(insn, insn_props);
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or1k_32_collect_stats(insn, insn_props);
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}
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}
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void generate_stats(FILE * stream)
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void generate_stats(FILE * stream)
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{
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{
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or1k_32_generate_stats(stream);
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or1k_32_generate_stats(stream);
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}
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}
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int main(int argc, char *argv[])
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int main(int argc, char *argv[])
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{
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{
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FILE *fp;
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FILE *fp;
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char insn_buff[INSN_SIZE_BYTES]; // Buffer for instruction data
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char insn_buff[INSN_SIZE_BYTES]; // Buffer for instruction data
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int insns_seen_total = 0; // Keep track of total number of instructions read
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int insns_seen_total = 0; // Keep track of total number of instructions read
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// Try to open the file passed as first parameter
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// Try to open the file passed as first parameter
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if((fp = fopen(argv[ 1 ], "rb"))==NULL) {
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if((fp = fopen(argv[ 1 ], "rb"))==NULL) {
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printf("Cannot open file.\n");
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printf("Cannot open file.\n");
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exit(1);
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exit(1);
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}
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}
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int filesize_bytes, filesize_insns;
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// Determine filesize
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if ( fseek(fp, 0, SEEK_END))
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{
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fclose(fp);
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fprintf(stderr, "Error detecting filesize\n");
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return -1;
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}
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filesize_bytes = ftell(fp);
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filesize_insns = filesize_bytes / INSN_SIZE_BYTES;
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// Reset pointer
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rewind(fp);
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instruction * insn = (instruction *)insn_buff;
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instruction * insn = (instruction *)insn_buff;
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instruction_properties insn_props;
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instruction_properties insn_props;
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// Do initial analysis - frequency of each instruction
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// Go through the file, collect stats about instructions
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// What is one-percent of instructions
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float file_one_percent = ((float)filesize_insns / 100.0f );
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float percent_of_percent=0; int percent;
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insn_lists_init();
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insn_lists_init();
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while(!feof(fp)) {
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while(!feof(fp)) {
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if (fread(insn_buff, INSN_SIZE_BYTES, 1, fp) != 1)
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if (fread(insn_buff, INSN_SIZE_BYTES, 1, fp) != 1)
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break;
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break;
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// Endianness is little when read in from binary file created with
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// Endianness is little when read in from binary file created with
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// or32-elf-objcopy, so swap;
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// or32-elf-objcopy, so swap;
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*insn = htonl(*insn);
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*insn = htonl(*insn);
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if (*insn == 0) // most probably dead space in binary, skip
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if (*insn == 0) // most probably dead space in binary, skip
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continue;
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continue;
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reset_instruction_properties(&insn_props);
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reset_instruction_properties(&insn_props);
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if (analyse_insn(*insn, &insn_props) == 0)
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if (analyse_insn(*insn, &insn_props) == 0)
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{
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{
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/*
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print_insn(&insn_props);
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printf("\n");
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*/
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insns_seen_total++;
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insns_seen_total++;
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collect_stats(*insn, &insn_props);
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collect_stats(*insn, &insn_props);
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}
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}
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else
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else
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{
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{
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// Non-zero return from analyse_insn(): problem analysing instruction.
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// Non-zero return from analyse_insn(): problem analysing instruction.
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// Is a NOP for now, but do something here if needed
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// Is a NOP for now, but do something here if needed
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do{ } while(0);
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do{ } while(0);
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}
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}
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// Progress indicator
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percent_of_percent += 1.0f;
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if (percent_of_percent >= file_one_percent)
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{
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percent++;
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fprintf(stderr, "\r%d%%", percent);
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percent_of_percent = 0;
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}
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}
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}
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fclose(fp);
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fclose(fp);
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printf("Saw %d instructions\n", insns_seen_total);
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printf("\rSaw %d instructions\n", insns_seen_total);
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generate_stats(stdout);
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generate_stats(stdout);
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insn_lists_free();
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insn_lists_free();
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return 0;
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return 0;
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}
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}
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