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/* -*- c-file-style: "linux";indent-tabs-mode:t -*- */
/* Copyright (C) 2017 Jeremiah Orians
* Copyright (C) 2017 Jan Nieuwenhuizen <janneke@gnu.org>
* This file is part of mescc-tools
*
* mescc-tools is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* mescc-tools is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with mescc-tools. If not, see <http://www.gnu.org/licenses/>.
*/
#include "hex2_globals.h"
/* The essential functions */
void first_pass(struct input_files* input);
void second_pass(struct input_files* input);
void WordFirstPass(struct input_files* input);
void WordSecondPass(struct input_files* input);
/* Standard C main program */
int main(int argc, char **argv)
{
int InsaneArchitecture = FALSE;
ALIGNED = FALSE;
BigEndian = TRUE;
jump_tables = calloc(65537, sizeof(struct entry*));
require(NULL != jump_tables, "Failed to allocate our jump_tables\n");
Architecture = KNIGHT;
Base_Address = 0;
struct input_files* input = NULL;
output = stdout;
char* output_file = "";
exec_enable = TRUE;
ByteMode = HEX;
scratch = calloc(max_string + 1, sizeof(char));
require(NULL != scratch, "failed to allocate our scratch buffer\n");
char* arch;
struct input_files* temp;
int option_index = 1;
while(option_index <= argc)
{
if(NULL == argv[option_index])
{
option_index = option_index + 1;
}
else if(match(argv[option_index], "--big-endian"))
{
BigEndian = TRUE;
option_index = option_index + 1;
}
else if(match(argv[option_index], "--little-endian"))
{
BigEndian = FALSE;
option_index = option_index + 1;
}
else if(match(argv[option_index], "--non-executable"))
{
exec_enable = FALSE;
option_index = option_index + 1;
}
else if(match(argv[option_index], "-A") || match(argv[option_index], "--architecture"))
{
arch = argv[option_index + 1];
if(match("knight-native", arch) || match("knight-posix", arch)) Architecture = KNIGHT;
else if(match("x86", arch)) Architecture = X86;
else if(match("amd64", arch)) Architecture = AMD64;
else if(match("armv7l", arch)) Architecture = ARMV7L;
else if(match("aarch64", arch)) Architecture = AARM64;
else if(match("ppc64le", arch)) Architecture = PPC64LE;
else if(match("riscv32", arch)) Architecture = RISCV32;
else if(match("riscv64", arch)) Architecture = RISCV64;
else
{
fputs("Unknown architecture: ", stderr);
fputs(arch, stderr);
fputs(" know values are: knight-native, knight-posix, x86, amd64, armv7l, riscv32 and riscv64", stderr);
}
option_index = option_index + 2;
}
else if(match(argv[option_index], "-b") || match(argv[option_index], "--binary"))
{
ByteMode = BINARY;
option_index = option_index + 1;
}
else if(match(argv[option_index], "-B") || match(argv[option_index], "--base-address"))
{
Base_Address = strtoint(argv[option_index + 1]);
option_index = option_index + 2;
}
else if(match(argv[option_index], "-h") || match(argv[option_index], "--help"))
{
fputs("Usage: ", stderr);
fputs(argv[0], stderr);
fputs(" --file FILENAME1 {-f FILENAME2} (--big-endian|--little-endian)", stderr);
fputs(" [--base-address 0x12345] [--architecture name]\nArchitecture:", stderr);
fputs(" knight-native, knight-posix, x86, amd64, armv7l, aarch64, riscv32 and riscv64\n", stderr);
fputs("To leverage octal or binary input: --octal, --binary\n", stderr);
exit(EXIT_SUCCESS);
}
else if(match(argv[option_index], "-f") || match(argv[option_index], "--file"))
{
temp = calloc(1, sizeof(struct input_files));
require(NULL != temp, "failed to allocate file for processing\n");
temp->filename = argv[option_index + 1];
temp->next = input;
input = temp;
option_index = option_index + 2;
}
else if(match(argv[option_index], "-o") || match(argv[option_index], "--output"))
{
output_file = argv[option_index + 1];
output = fopen(output_file, "w");
if(NULL == output)
{
fputs("The file: ", stderr);
fputs(argv[option_index + 1], stderr);
fputs(" can not be opened!\n", stderr);
exit(EXIT_FAILURE);
}
option_index = option_index + 2;
}
else if(match(argv[option_index], "-O") || match(argv[option_index], "--octal"))
{
ByteMode = OCTAL;
option_index = option_index + 1;
}
else if(match(argv[option_index], "-V") || match(argv[option_index], "--version"))
{
fputs("hex2 1.5.0\n", stdout);
exit(EXIT_SUCCESS);
}
else
{
fputs("Unknown option\n", stderr);
exit(EXIT_FAILURE);
}
}
if((Architecture == RISCV32) || (Architecture == RISCV64))
{
/* Forcing me to use words instead of just byting into the problem */
InsaneArchitecture = TRUE;
}
/* Catch a common mistake */
if((KNIGHT != Architecture) && (0 == Base_Address))
{
fputs(">> WARNING <<\n>> WARNING <<\n>> WARNING <<\n", stderr);
fputs("If you are not generating a ROM image this binary will likely not work\n", stderr);
}
/* Catch implicitly false assumptions */
if(BigEndian && ((X86 == Architecture) || ( AMD64 == Architecture) || (ARMV7L == Architecture) || (AARM64 == Architecture) || (RISCV32 == Architecture) || (RISCV64 == Architecture)))
{
fputs(">> WARNING <<\n>> WARNING <<\n>> WARNING <<\n", stderr);
fputs("You have specified big endian output on likely a little endian processor\n", stderr);
fputs("if this is a mistake please pass --little-endian next time\n", stderr);
}
/* Make sure we have a program tape to run */
if (NULL == input)
{
return EXIT_FAILURE;
}
/* Get all of the labels */
ip = Base_Address;
if(InsaneArchitecture) WordFirstPass(input);
else first_pass(input);
/* Fix all the references*/
ip = Base_Address;
if(InsaneArchitecture) WordSecondPass(input);
else second_pass(input);
/* flush all writes */
fflush(output);
/* Set file as executable */
if(exec_enable && (output != stdout))
{
/* Close output file */
fclose(output);
if(0 != chmod(output_file, 0750))
{
fputs("Unable to change permissions\n", stderr);
exit(EXIT_FAILURE);
}
}
return EXIT_SUCCESS;
}
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