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