8b845ac5ed
This recommitsf665e80c02which was reverted in1cbd1b8f69for breaking TestFoundationDisassembly.py. The fix is to use --force in the test to avoid bailing out on large functions. I have also doubled the large function limit to 8000 bytes (~~ 2000 insns), as the foundation library contains a lot of large-ish functions. The intent of this feature is to prevent accidental disassembling of enormous (multi-megabyte) "functions", not to get in people's way. The original commit message follows: If we have a binary without symbol information (and without LC_FUNCTION_STARTS, if on a mac), then we have to resort to using heuristics to determine the function boundaries. However, these don't always work, and so we can easily end up thinking we have functions which are several megabytes in size. Attempting to (accidentally) disassemble these can take a very long time spam the terminal with thousands of lines of disassembly. This patch works around that problem by adding a sanity check to the disassemble command. If we are about to disassemble a function which is larger than a certain threshold, we will refuse to disassemble such a function unless the user explicitly specifies the number of instructions to disassemble, uses start/stop addresses for disassembly, or passes the (new) --force argument. The threshold is currently fairly aggressive (4000 bytes ~~ 1000 instructions). If needed, we can increase it, or even make it configurable. Differential Revision: https://reviews.llvm.org/D79789
19 lines
571 B
Plaintext
19 lines
571 B
Plaintext
disassemble
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disassemble --line
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disassemble --frame
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disassemble --pc
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disassemble --start-address 0x0
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disassemble --start-address 0x4 --end-address 0x8
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disassemble --start-address 0x8 --end-address 0x4
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disassemble --address 0x0
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disassemble --address 0xdeadb
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disassemble --address 0x100
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disassemble --address 0x100 --count 3
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disassemble --address 0x100 --force
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disassemble --start-address 0x0 --count 7
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disassemble --start-address 0x0 --end-address 0x20 --count 7
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disassemble --name case1
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disassemble --name case2
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disassemble --name case3
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disassemble --name case3 --count 3
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