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UnicronNLandClaude Opus 5.5
4f042f7225
Interpreter + JIT for ARM, Thumb-2, VFPv4 and NEON, ARM EABI syscall translation, signals, threads and self-modifying code. Runs static bionic programs on the Frame. Tests: A64 encoders vs llvm-mc, a differential instruction fuzzer and program tests against qemu-arm. Not shipped; the README lists the steps towards running 32-bit-only APKs. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
41 lines
1.7 KiB
Python
41 lines
1.7 KiB
Python
#!/usr/bin/env python3
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"""Generates src/arm_syscalls.h (guest ARM EABI syscall numbers + names) from the NDK's arm asm/unistd-eabi.h.
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python tools/gen_syscalls.py [--ndk native/.cache/ndk-27.2.12479018]
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"""
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import argparse
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import re
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from pathlib import Path
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HERE = Path(__file__).resolve().parent.parent
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def main():
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ap = argparse.ArgumentParser()
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ap.add_argument("--ndk", default=str(HERE.parent / ".cache/ndk-27.2.12479018"))
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a = ap.parse_args()
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inc = Path(a.ndk) / "toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/arm-linux-androideabi/asm"
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nums = {}
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for line in (inc / "unistd-eabi.h").read_text().splitlines():
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m = re.match(r"#define __NR_(\w+) \(__NR_SYSCALL_BASE \+ (\d+)\)", line)
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if m:
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nums[m.group(1)] = int(m.group(2))
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for line in (inc / "unistd.h").read_text().splitlines():
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m = re.match(r"#define __ARM_NR_(\w+) \(__ARM_NR_BASE \+ (\d+)\)", line)
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if m and m.group(1) != "BASE":
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nums["ARM_" + m.group(1)] = 0x0F0000 + int(m.group(2))
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out = ["/* Generated by tools/gen_syscalls.py from the NDK's arm asm/unistd-eabi.h: guest syscall numbers. */",
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"#ifndef A32_ARM_SYSCALLS_H", "#define A32_ARM_SYSCALLS_H", ""]
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for name, n in sorted(nums.items(), key=lambda kv: kv[1]):
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out.append(f"#define G_NR_{name} {n}")
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out += ["", "static const struct { int nr; const char *name; } g_syscall_names[] = {"]
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for name, n in sorted(nums.items(), key=lambda kv: kv[1]):
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out.append(f' {{{n}, "{name}"}},')
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out += ["};", "", "#endif", ""]
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(HERE / "src/arm_syscalls.h").write_text("\n".join(out))
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print(f"{len(nums)} syscalls")
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if __name__ == "__main__":
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main()
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