Michel2/HxCFloppyEmulator
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Code Issues Releases Activity

WIP : Fix gcc static analysis reports.

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This commit is contained in:
Jean-François DEL NERO
2023-11-06 09:18:32 +01:00
parent 825e546961
commit 6acd3b7110
1 changed files with 32 additions and 20 deletions
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libhxcfe/sources/tracks/track_formats/centurion_mfm_track.c
+32 -20
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@@ -30,7 +30,6 @@ int get_next_Centurion_MFM_sector(HXCFE* floppycontext,HXCFE_SIDE * track,HXCFE_
int sector_extractor_sm;
unsigned char mfm_buffer[32];
unsigned char tmp_buffer[32];
int last_start_offset;
unsigned char CRC16_High;
unsigned char CRC16_Low;
unsigned char crctable[32];
@@ -58,7 +57,6 @@ int get_next_Centurion_MFM_sector(HXCFE* floppycontext,HXCFE_SIDE * track,HXCFE_
if(bit_offset!=-1)
{
last_start_offset = bit_offset;
floppycontext->hxc_printf(MSG_DEBUG, "Found Centurion MFM sector mark at offset %d\n", bit_offset);
sector_extractor_sm=LOOKFOR_ADDM;
}
@@ -141,32 +139,46 @@ int get_next_Centurion_MFM_sector(HXCFE* floppycontext,HXCFE_SIDE * track,HXCFE_
// Read data bytes
sector->input_data = (unsigned char*)malloc(sector->sectorsize);
memset(sector->input_data, 0, sector->sectorsize);
sector->input_data_index = (int*)malloc(sector->sectorsize*sizeof(int));
memset(sector->input_data_index, 0, sector->sectorsize * sizeof(int));
bit_offset = mfmtobin(track->databuffer,sector->input_data_index,track->tracklen,sector->input_data,sector->sectorsize,bit_offset,0);
for(k=0; k < sector->sectorsize; k++)
if( sector->input_data && sector->input_data_index)
{
CRC16_Update(&CRC16_High,&CRC16_Low, sector->input_data[k],(unsigned char*)crctable );
}
memset(sector->input_data, 0, sector->sectorsize);
memset(sector->input_data_index, 0, sector->sectorsize * sizeof(int));
// Data CRC is immediately after
bit_offset = mfmtobin(track->databuffer, NULL, track->tracklen, tmp_buffer, 2, bit_offset, 0);
sector->data_crc = (tmp_buffer[0] << 8) | tmp_buffer[1];
CRC16_Update(&CRC16_High,&CRC16_Low, tmp_buffer[0],(unsigned char*)crctable );
CRC16_Update(&CRC16_High,&CRC16_Low, tmp_buffer[1],(unsigned char*)crctable );
bit_offset = mfmtobin(track->databuffer,sector->input_data_index,track->tracklen,sector->input_data,sector->sectorsize,bit_offset,0);
if(!CRC16_High && !CRC16_Low)
{ // crc ok !!!
floppycontext->hxc_printf(MSG_DEBUG, "Valid Centurion MFM data found - Cyl: %d Sect:%d\n", sector->cylinder, sector->sector);
sector->use_alternate_data_crc = 0;
for(k=0; k < sector->sectorsize; k++)
{
CRC16_Update(&CRC16_High,&CRC16_Low, sector->input_data[k],(unsigned char*)crctable );
}
// Data CRC is immediately after
bit_offset = mfmtobin(track->databuffer, NULL, track->tracklen, tmp_buffer, 2, bit_offset, 0);
sector->data_crc = (tmp_buffer[0] << 8) | tmp_buffer[1];
CRC16_Update(&CRC16_High,&CRC16_Low, tmp_buffer[0],(unsigned char*)crctable );
CRC16_Update(&CRC16_High,&CRC16_Low, tmp_buffer[1],(unsigned char*)crctable );
if(!CRC16_High && !CRC16_Low)
{ // crc ok !!!
floppycontext->hxc_printf(MSG_DEBUG, "Valid Centurion MFM data found - Cyl: %d Sect:%d\n", sector->cylinder, sector->sector);
sector->use_alternate_data_crc = 0;
}
else
{
floppycontext->hxc_printf(MSG_DEBUG, "Bad Centurion MFM data found - Cyl: %d, Sect:%d\n", sector->cylinder, sector->sector);
}
}
else
{
floppycontext->hxc_printf(MSG_DEBUG, "Bad Centurion MFM data found - Cyl: %d, Sect:%d\n", sector->cylinder, sector->sector);
if(sector->input_data)
free(sector->input_data);
if(sector->input_data_index)
free(sector->input_data_index);
floppycontext->hxc_printf(MSG_ERROR, "get_next_Centurion_MFM_sector : Allocation error !\n");
return -1;
}
} else {
floppycontext->hxc_printf(MSG_DEBUG, "Don't know how to decode Centurion MFM sector key %d", sector_key);