commit: 71505bc8b94796f473b79fc3ef2f5c9250c0bed4
parent e2796e8d57a9701803e97655b927a20946f30db1
Author: fosslinux <fosslinux@aussies.space>
Date: Fri, 12 Feb 2021 17:56:32 +1100
Add fletcher16 impl to mescc-tools-extra
Diffstat:
2 files changed, 140 insertions(+), 0 deletions(-)
diff --git a/sysa/mescc-tools-extra/mescc-tools-extra.kaem b/sysa/mescc-tools-extra/mescc-tools-extra.kaem
@@ -87,4 +87,41 @@ hex2 \
-o ${bindir}/chmod \
--exec_enable
+# fletcher16 command
+M2-Planet \
+ -f /M2-Planet/test/common_x86/functions/file.c \
+ -f /M2-Planet/test/common_x86/functions/exit.c \
+ -f functions/numerate_number.c \
+ -f functions/string.c \
+ -f functions/file_print.c \
+ -f functions/match.c \
+ -f functions/require.c \
+ -f functions/in_set.c \
+ -f /M2-Planet/functions/calloc.c \
+ -f /M2-Planet/test/common_x86/functions/malloc.c \
+ -f fletcher16.c \
+ --architecture x86 \
+ --debug \
+ -o fletcher16.M1
+
+blood-elf -f fletcher16.M1 -o fletcher16-footer.M1
+
+M1 \
+ -f /M2-Planet/test/common_x86/x86_defs.M1 \
+ -f /M2-Planet/test/common_x86/libc-core.M1 \
+ -f fletcher16.M1 \
+ -f fletcher16-footer.M1 \
+ --LittleEndian \
+ --architecture x86 \
+ -o hold
+
+hex2 \
+ -f /M2-Planet/test/common_x86/ELF-i386-debug.hex2 \
+ -f hold \
+ --LittleEndian \
+ --architecture x86 \
+ --BaseAddress 0x8048000 \
+ -o ${bindir}/fletcher16 \
+ --exec_enable
+
cd ..
diff --git a/sysa/mescc-tools-extra/src/fletcher16.c b/sysa/mescc-tools-extra/src/fletcher16.c
@@ -0,0 +1,103 @@
+/*
+ * SPDX-FileCopyrightText: 2021 fosslinux <fosslinux@aussies.space>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#define BUF_SIZE 1024
+// CONSTANT BUF_SIZE 1024
+#define PATH_MAX 512
+// CONSTANT PATH_MAX 512
+
+int fletch16(FILE* fp)
+{
+ long sum1 = 0;
+ long sum2 = 0;
+ int index;
+ int c = fgetc(fp);
+ while(c != EOF)
+ {
+ sum1 = (sum1 + c) % 255;
+ sum2 = (sum2 + sum1) % 255;
+ c = fgetc(fp);
+ }
+
+ return (sum2 << 8) | sum1;
+}
+
+int main(int argc, char** argv)
+{
+ /* Open the file containing the checksums */
+ FILE* check_fp = fopen(argv[1], "r");
+ require(check_fp != NULL, prepend_string(
+ prepend_string("Error opening checksum file ", argv[1]), "\n"));
+ int rc = 0;
+
+ /* Now loop over each one */
+ FILE* fp;
+ char c;
+ char* filename;
+ char* s_rchecksum;
+ char* file;
+ int rchecksum;
+ int i;
+ int csum;
+ /* It's much easier to just break; out of the loop */
+ while(1)
+ {
+ filename = calloc(PATH_MAX, sizeof(char));
+ require(filename != NULL, "Failed to allocate filename\n");
+ s_rchecksum = calloc(16, sizeof(char));
+ require(s_rchecksum != NULL, "Failed to allocate filename\n");
+ /* Read the checksum */
+ c = fgetc(check_fp);
+ i = 0;
+ while (c != ' ' && c != EOF)
+ {
+ require(in_set(c, "0123456789"), "Invalid checksum file\n");
+ s_rchecksum[i] = c;
+ c = fgetc(check_fp);
+ i = i + 1;
+ }
+ if(c == EOF) break;
+ /* Skip the space */
+ c = fgetc(check_fp);
+ /* Read the filename */
+ i = 0;
+ while(c != '\n' && c != EOF)
+ {
+ filename[i] = c;
+ c = fgetc(check_fp);
+ i = i + 1;
+ }
+ /* If we got here and it is EOF, we probably have all the needed data */
+ /* Convert s_rchecksum -> int */
+ rchecksum = numerate_string(s_rchecksum);
+
+ /* Now let's actually calculate the real checksum */
+ /* Read the file into a char* array */
+ fp = fopen(filename, "r");
+ /* Calculate the checksum! */
+ csum = fletch16(fp);
+
+ /* Compare */
+ if(csum == rchecksum)
+ {
+ file_print(prepend_string(filename, ": OK\n"), stdout);
+ }
+ else
+ {
+ /* We failed.. we should fail at the end */
+ rc = 1;
+ file_print(prepend_string(filename, ": FAILED\n"), stdout);
+ }
+
+ /* Now if we finished the last one, leave */
+ if(c == EOF) break;
+ }
+
+ return rc;
+}
