mirror of
https://github.com/AsahiLinux/m1n1
synced 2024-11-22 22:53:04 +00:00
92 lines
2.3 KiB
Python
92 lines
2.3 KiB
Python
from setup import *
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import asm
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p.iodev_set_usage(IODEV.FB, 0)
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code_len = 12 * 16 * 8 + 4
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data_len = 8 * 16 * 8
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code_buffer = p.malloc(code_len)
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data_buffer = p.malloc(data_len)
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template = asm.ARMAsm("""
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mov x2, x0
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mrs x2, s3_0_c0_c0_0
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str x2, [x1], #8
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ret
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""", code_buffer)
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mov, mrs, st, ret = struct.unpack("4I", template.data)
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data = []
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BAD = 0xacce5515abad1dea
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def find_regs(call=None):
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if not call:
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call = p.call
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regs = set()
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for op1 in range(1 << 3):
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for CRn in (0b1011, 0b1111):
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mrs0 = mrs | (op1 << 16) | (CRn << 12)
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insns = []
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for CRm in range(1 << 4):
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for op2 in range(1 << 3):
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insns.extend((mov, mrs0 | (CRm << 8) | (op2 << 5), st))
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insns.append(ret)
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iface.writemem(code_buffer, struct.pack("<385I", *insns))
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p.dc_cvau(code_buffer, code_len)
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p.ic_ivau(code_buffer, code_len)
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p.set_exc_guard(GUARD.SILENT | GUARD.SKIP)
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call(code_buffer, BAD, data_buffer)
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cnt = p.get_exc_count()
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data = iface.readmem(data_buffer, data_len)
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d = struct.unpack("<128Q", data)
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i = 0
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for CRm in range(1 << 4):
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for op2 in range(1 << 3):
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v = d[i]
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if v != BAD:
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regs.add((3, op1, CRn, CRm, op2))
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i += 1
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return regs
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p.set_exc_guard(GUARD.SILENT | GUARD.SKIP)
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all_regs = set()
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with u.mmu_disabled():
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for reg in [(3, 6, 15, 1, 0), (3, 6, 15, 1, 2)]: # , (3, 6, 15, 1, 4)]:
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old_regs = find_regs()
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u.msr(reg, 1)
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new_regs = find_regs()
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all_regs = all_regs.union(new_regs)
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diff_regs = new_regs - old_regs
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print(reg)
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for r in sorted(diff_regs):
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print(" %s --> %lx" % (list(r), u.mrs(r)))
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#u.msr((3, 6, 15, 1, 4), 0)
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u.msr((3, 6, 15, 1, 2), 0)
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u.msr((3, 6, 15, 1, 0), 0)
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gxf_regs = find_regs(call=p.gl2_call)
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print("GL2")
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for r in sorted(gxf_regs - all_regs):
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print(" %s -> %lx" % (list(r), u.mrs(r, call=p.gl2_call)))
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gxf_regs = find_regs(call=p.gl1_call)
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print("GL1")
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for r in sorted(gxf_regs - all_regs):
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print(" %s -> %lx" % (list(r), u.mrs(r, call=p.gl1_call)))
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