i386_seg_regs Struct Reference

A segment register dump. More...

#include <registers.h>

Data Fields
uint16_t	cs
uint16_t	ss
uint16_t	ds
uint16_t	es
uint16_t	fs
uint16_t	gs

Detailed Description

A segment register dump.

The i386 has no equivalent of the pushal or popal instructions for the segment registers. We adopt the convention of always using the sequences

pushw %gs ; pushw %fs ; pushw %es ; pushw %ds ; pushw %ss ; pushw %cs

and

addw $4, %sp ; popw %ds ; popw %es ; popw %fs ; popw %gs

This is the data structure that is created and read back by these instruction sequences.

Definition at line 138 of file registers.h.

Field Documentation

cs

uint16_t i386_seg_regs::cs

Definition at line 139 of file registers.h.

Referenced by _dump_regs().

ss

uint16_t i386_seg_regs::ss

Definition at line 140 of file registers.h.

Referenced by _dump_regs().

ds

uint16_t i386_seg_regs::ds

Definition at line 141 of file registers.h.

Referenced by _dump_regs(), int13_cdrom_read_boot_catalog(), int13_cdrom_status_terminate(), int13_extended_rw(), int13_extended_seek(), int13_extended_verify(), int13_get_extended_parameters(), int21(), int22(), and pxe_loader_call().

es

uint16_t i386_seg_regs::es

Definition at line 142 of file registers.h.

Referenced by _dump_regs(), int13_get_parameters(), int13_rw_sectors(), int22(), pxe_api_call(), and pxe_loader_call().

fs

uint16_t i386_seg_regs::fs

Definition at line 143 of file registers.h.

Referenced by _dump_regs().

gs

uint16_t i386_seg_regs::gs

Definition at line 144 of file registers.h.

Referenced by _dump_regs().

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The documentation for this struct was generated from the following file:

• arch/x86/include/registers.h