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annotate arm7dis/README @ 227:bb86424f78e6

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current-draw: checking in experiment results
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 17 Dec 2017 19:30:22 +0000
parents c883e60df239
children
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107
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 The present package is a basic standalone disassembler for the ARMv4T
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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2 instruction set implemented on the ARM7TDMI CPU core, commonly used in classic
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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3 cellular phone baseband processors. The armdis utility interprets an arbitrary
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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4 raw binary image (i.e., one being reverse-engineered) as 32-bit ARM
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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5 instructions; thumbdis interprets the same image as 16-bit Thumb instructions.
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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6
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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7 The form in which the disassembly output is presented is a look-and-feel copycat
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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8 of GNU objdump: armdis is meant to replace
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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9
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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10 objdump -b binary -m arm -EL -M reg-names-std -D unknown-firmware.bin
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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11
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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12 and thumbdis is meant to replace
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
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13
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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14 objdump -b binary -m arm -EL -M reg-names-std -M force-thumb -D unknown-fw.bin
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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15
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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16 Aside from sparing the operator from having to remember all those options
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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17 every single time, and aside from being an independent from-scratch
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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18 implementation (lean and mean, only knows how to disassemble those instructions
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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19 which are meaningful on ARM7TDMI), these tools have one other feature which
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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20 partly prompted me to write them: whenever *dis disassembles a PC-relative
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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21 ldr instruction, it shows the value pulled from the literal pool on that ldr
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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22 line. In the reverse engineering jobs I've had to do, it has been a very
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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23 valuable feature for me.
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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24
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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25 Happy hacking,
c883e60df239 arm7dis: README and header comments added
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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26 Spacefalcon the Outlaw