9d68e9614f
* core/cmd: Adjust math commands * shell: make `?x` commands a parsing failure We have moved the `?x` commands to `%x`, thus now no command should start with `?`. This patch makes the parser fail to parse `?x` strings. * core/tui: use APIs in panels * There's no `%q` anymore, use `%=`
32 lines
924 B
Markdown
32 lines
924 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 .(dec_times) @ 0x4000ce
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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 .(break_rax) @ 0x4000ce
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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 .(trace_rax) @ 0x4000ce
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dc > trace.txt
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