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imgtool/modules/vzdos.cpp: Use util::sum16_creator

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AJR 2024-01-11 19:35:50 -05:00
parent 9529089576
commit 79afb8d9e5
1 changed files with 3 additions and 14 deletions
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17
src/tools/imgtool/modules/vzdos.cpp
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@ -15,6 +15,7 @@
#include "formats/vt_dsk_legacy.h"
#include "corestr.h"
#include "hashing.h"
#include "multibyte.h"
#include "opresolv.h"
@ -94,18 +95,6 @@ static int vzdos_get_fname_len(const char *fname)
return len;
}
/* calculate checksum-16 of buffer */
static uint16_t chksum16(uint8_t *buffer, int len)
{
int i;
uint16_t sum = 0;
for (i = 0; i < len; i++)
sum += buffer[i];
return sum;
}
/* returns the offset where the actual sector data starts */
static imgtoolerr_t vzdos_get_data_start(imgtool::image &img, int track, int sector, int *start)
{
@ -141,7 +130,7 @@ static imgtoolerr_t vzdos_read_sector_data(imgtool::image &img, int track, int s
if (ret) return (imgtoolerr_t)ret;
/* verify sector checksums */
if (get_u16le(&buffer[DATA_SIZE + 2]) != chksum16(buffer, DATA_SIZE + 2))
if (get_u16le(&buffer[DATA_SIZE + 2]) != util::sum16_creator::simple(buffer, DATA_SIZE + 2))
return IMGTOOLERR_CORRUPTFILE;
memcpy(data, &buffer, DATA_SIZE + 2);
@ -159,7 +148,7 @@ static imgtoolerr_t vzdos_write_sector_data(imgtool::image &img, int track, int
if (ret) return (imgtoolerr_t)ret;
memcpy(buffer, data, DATA_SIZE + 2);
put_u16le(&buffer[DATA_SIZE + 2], chksum16(data, DATA_SIZE + 2));
put_u16le(&buffer[DATA_SIZE + 2], util::sum16_creator::simple(data, DATA_SIZE + 2));
ret = floppy_write_sector(imgtool_floppy(img), 0, track, sector_order[sector], data_start, buffer, sizeof(buffer), 0); /* TODO: pass ddam argument from imgtool */
if (ret) return (imgtoolerr_t)ret;