Extended state information in signal handler.
Source position: sighndh.inc line 35
| type tfpx_sw_bytes = record | ||
| magic1: DWord; | 
 | Extended context area (of size extended_size) present if equal to $46505853U. | 
| extended_size: DWord; | 
 | Size of extended context area. | 
| xfeatures: QWord; | 
 | Feature bit mask. | 
| xstate_size: DWord; | 
 | Size of extended state. | 
| padding: array [0..6] of DWord; | 
 | Padding bytes. | 
| end; |