radare2/doc/debug
2017-12-25 22:02:19 +01:00

28 lines
875 B
Plaintext

Conditional breakpoints
=========================
conditional breakpoints are implemented in the following way:
- when a breakpoint is hit, the condition is run as a normal command
- if the command returns a value different from zero, execution continue,
- otherwise, execution is stopped at the breakpoint
Examples of conditional breakpoints
======================================
1.) ignore breakpoint at address 0x4000ce for five times:
f times=5
(dec_times,f times=`?vi times-1`,?= times)
db 0x4000ce
dbC 0x4000ce .(dec_times)
dc
2.) execute until rax==0x31c0 at address 0x4000ce
e cmd.hitinfo=0
(break_rax,f reg_rax=`dr rax`,f test=`?vi reg_rax-0x31c0`,?= test)
db 0x4000ce
dbC 0x4000ce .(break_rax)
dc
3.) perform a register tracing dump at address 0x4000ce
e cmd.hitinfo=0
(trace_rax,dr rax,?= 1)
db 0x4000ce
dbC 0x4000ce .(trace_rax)
dc > trace.txt