Add x1 experiments

This commit is contained in:
Takumi Sueda 2021-03-04 02:15:40 +09:00
parent fd655b4839
commit c997a68459
7 changed files with 324 additions and 0 deletions

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/x1/*.bin

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- [read_keys.py](read_keys.py) Initialize the keyboard MCU and poll key code - [read_keys.py](read_keys.py) Initialize the keyboard MCU and poll key code
- [read_keys_SH3.py](read_keys_SH3.py) Scan key matrix and return key name(deprecated) - [read_keys_SH3.py](read_keys_SH3.py) Scan key matrix and return key name(deprecated)
- [read_keys_SH3.c](read_keys_SH3.c) Scan key matrix and return key name rewritten with C. nice performance - [read_keys_SH3.c](read_keys_SH3.c) Scan key matrix and return key name rewritten with C. nice performance
- [x1](x1) Executable to analyze `[JHSBA]1` gen
### License ### License

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x1/Makefile Normal file
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CROSS_COMPILE:=arm-linux-gnueabi-
AS:=$(CROSS_COMPILE)as
.PHONY:
all: return.bin mrc.bin
%.bin: %.S
@$(AS) $<
@./extract.py a.out $@
@rm -f a.out

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#### Code
- `mrc.S` Read SCTLR (MMU etc.) and return
- `return.S` Return immediately
- `extract.py` Extract .text
#### Build
```sh
pip3 install pyelftools
make all
```
#### Run
- Create a directory `/path/to/sd/APP/foo`
- Create index.din `touch /path/to/sd/APP/foo/index.din`
- Copy and rename the raw executable `cp foo.bin /path/to/sd/APP/foo/AppMain.bin`

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x1/extract.py Executable file
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#!/usr/bin/env python3
import sys
from elftools.elf.elffile import ELFFile # pip install pyelftools
def main():
if len(sys.argv) < 3:
print(f'Usage: {sys.argv[0]} in.elf out.bin')
sys.exit(1)
with open(sys.argv[1], 'rb') as f:
extract(ELFFile(f))
def extract(elf):
text = elf.get_section_by_name('.text')
if text is None:
print('Input ELF has no .text section', file=sys.stderr)
with open(sys.argv[2], 'wb') as f:
f.write(text.data())
print(f'Successfully extracted the .text section to "{sys.argv[2]}"')
main()

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x1/mrc.S Normal file
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.text
.align 2
.global _start
_start:
mrc p15, 0, r10, c1, c0, 0
mov pc, lr

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x1/return.S Normal file
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.text
.align 2
.global _start
_start:
mov pc, lr