Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\lib\insn-eval.c Create Date:2022-07-28 07:25:27
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:get_segment_selector() - obtain segment selector*@regs: Register values as seen when entering kernel mode*@seg_reg_idx: Segment register index to use* Obtain the segment selector from any of the CS, SS, DS, ES, FS, GS segment* registers

Proto:static short get_segment_selector(struct pt_regs *regs, int seg_reg_idx)

Type:short

Parameter:

TypeParameterName
struct pt_regs *regs
intseg_reg_idx
326  Case seg_reg_idx == Identifiers for segment registers
327  Return 0
328  Case seg_reg_idx == INAT_SEG_REG_CS
329  Return cs & 0xffff
330  Case seg_reg_idx == INAT_SEG_REG_SS
331  Return ss & 0xffff
332  Case seg_reg_idx == INAT_SEG_REG_DS
333  Save a segment register away:(ds, sel)
334  Return sel
335  Case seg_reg_idx == INAT_SEG_REG_ES
336  Save a segment register away:(es, sel)
337  Return sel
338  Case seg_reg_idx == INAT_SEG_REG_FS
339  Save a segment register away:(fs, sel)
340  Return sel
341  Case seg_reg_idx == INAT_SEG_REG_GS
342  Save a segment register away:(gs, sel)
343  Return sel
344  Default
345  Return -EINVAL
Caller
NameDescribe
insn_get_seg_basesn_get_seg_base() - Obtain base address of segment descriptor
get_seg_limitget_seg_limit() - Obtain the limit of a segment descriptor*@regs: Register values as seen when entering kernel mode*@seg_reg_idx: Index of the segment register pointing to seg descriptor* Obtain the limit of the segment as indicated by the segment
insn_get_code_seg_paramssn_get_code_seg_params() - Obtain code segment parameters*@regs: Structure with register values as seen when entering kernel mode* Obtain address and operand sizes of the code segment. It is obtained from the* selector contained in the CS register in regs