函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\lib\insn-eval.c Create Date:2022-07-27 08:24:30
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：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

函数原型：static short get_segment_selector(struct pt_regs *regs, int seg_reg_idx)

返回类型：short

参数：

类型参数名称
struct pt_regs *regs
intseg_reg_idx
326  当:seg_reg_idx恒等于Identifiers for segment registers
327  返回:0
328  当:seg_reg_idx恒等于INAT_SEG_REG_CS
329  返回:cs按位与0xffff
330  当:seg_reg_idx恒等于INAT_SEG_REG_SS
331  返回:ss按位与0xffff
332  当:seg_reg_idx恒等于INAT_SEG_REG_DS
333  Save a segment register away:(ds, sel)
334  返回:sel
335  当:seg_reg_idx恒等于INAT_SEG_REG_ES
336  Save a segment register away:(es, sel)
337  返回:sel
338  当:seg_reg_idx恒等于INAT_SEG_REG_FS
339  Save a segment register away:(fs, sel)
340  返回:sel
341  当:seg_reg_idx恒等于INAT_SEG_REG_GS
342  Save a segment register away:(gs, sel)
343  返回:sel
344  默认
345  返回:负EINVAL
调用者
名称描述
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