函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\debug\gdbstub.c Create Date:2022-07-27 12:42:50
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：Handle the 'q' query packets

函数原型：static void gdb_cmd_query(struct kgdb_state *ks)

返回类型：void

参数：

类型参数名称
struct kgdb_state *ks
706  finished等于0
709  当:Our I/O buffers. [1]恒等于's'
710  当:Our I/O buffers. [1]恒等于'f'
711  如果内存比较则退出
714  i等于0
715  remcom_out_buffer[0]等于'm'
716  ptr等于remcom_out_buffer加1
717  如果Our I/O buffers. [1]恒等于'f'则
719  遍历在线CPU(cpu)
720  thr_query等于0
721  int_to_threadref(thref, - cpu - 2)
722  ptr等于pack_threadid(ptr, thref)
723  *ptr自加等于','
724  i自加
728  Careful: do_each_thread/while_each_thread is a double loop so* 'break' will not work as expected - use goto instead.(g, p)
729  如果i大于等于thr_query且非finished则
730  int_to_threadref(thref, 进程ID)
731  ptr等于pack_threadid(ptr, thref)
732  *ptr自加等于','
733  thr_query自加
734  如果thr_query取模KGDB_MAX_THREAD_QUERY恒等于0则finished等于1
737  i自加
740  *ptr先自减等于'\0'
741  退出
743  当:Our I/O buffers. [1]恒等于'C'
745  strcpy(remcom_out_buffer, "QC")
746  threadid等于Remap normal tasks to their real PID,* CPU shadow threads are mapped to -CPU - 2
747  int_to_threadref(thref, threadid)
748  pack_threadid(remcom_out_buffer + 2, thref)
749  退出
750  当:Our I/O buffers. [1]恒等于'T'
751  如果内存比较则退出
754  threadid等于0
755  ptr等于Our I/O buffers. 加17
756  While we find nice hex chars, build a long_val.* Return number of chars processed.
757  如果非getthread(linux_regs, threadid)则
761  如果threadid大于0则
765  否则
772  退出
774  当:Our I/O buffers. [1]恒等于'R'
775  如果字符串指定长度比较恒等于0则
793  退出
调用者
名称描述
gdb_serial_stubThis function performs all gdbserial command procesing