函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:arch\x86\kernel\kgdb.c Create Date:2022-07-27 09:39:53
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：kgdb_correct_hw_break

函数原型：static void kgdb_correct_hw_break(void)

返回类型：void

参数：无

193  以breakno小于Total number of available HW breakpoint registers 循环
197  cpu等于These macros fold the SMP functionality into a single CPU system()
198  如果非enabled则继续下一循环
200  如果dbg_is_early则
201  set_debugreg(addr, breakno)
202  early_dr7或等于Encode the length, type, Exact, and Enable bits for a particular breakpoint* as stored in debug register 7.
205  set_debugreg(early_dr7, 7)
206  继续下一循环
208  bp等于per_cpu_ptr(pev, cpu)
209  info等于counter_arch_bp(bp)
210  如果disabled不等于1则继续下一循环
212  bp_addr等于addr
213  bp_len等于len
214  bp_type等于type
215  address等于addr
216  len等于len
217  type等于type
218  val等于Install a perf counter breakpoint.* We seek a free debug address register and use it for this* breakpoint. Eventually we enable it in the debug control register.* Atomic: we hold the counter->ctx->lock and we only handle variables
219  如果非val则disabled等于0
222  如果非dbg_is_early则hw_breakpoint_restore()