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kern: push code through call to kernelldr

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This commit is contained in:
Michael Scire
2020-01-23 21:12:36 -08:00
parent bce7133128
commit 24d41ce55e
2 changed files with 311 additions and 14 deletions
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10
mesosphere/build_mesosphere.py
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@@ -15,10 +15,10 @@ def main(argc, argv):
kernel_ldr = f.read()
with open('kernel/kernel.bin', 'rb') as f:
kernel = f.read()
kernel_metadata_offset = up('<I', kernel[4:8])[0]
kernel_metadata_offset = 4
assert (kernel_metadata_offset <= len(kernel) - 0x40)
assert (kernel[kernel_metadata_offset:kernel_metadata_offset + 4] == b'MSS0')
kernel_end = up('<I', kernel[kernel_metadata_offset + 0x30:kernel_metadata_offset + 0x34])[0]
kernel_end = up('<I', kernel[kernel_metadata_offset + 0x34:kernel_metadata_offset + 0x38])[0]
assert (kernel_end >= len(kernel))
embedded_ini = b''
@@ -29,9 +29,9 @@ def main(argc, argv):
kernel_ldr_end = kernel_ldr_offset + len(kernel_ldr)
with open('mesosphere.bin', 'wb') as f:
f.write(kernel[:kernel_metadata_offset + 8])
f.write(pk('<II', embedded_ini_offset, kernel_ldr_offset))
f.write(kernel[kernel_metadata_offset + 0x10:])
f.write(kernel[:kernel_metadata_offset + 4])
f.write(pk('<QQ', embedded_ini_offset, kernel_ldr_offset))
f.write(kernel[kernel_metadata_offset + 0x14:])
f.seek(embedded_ini_offset)
f.write(embedded_ini)
f.seek(embedded_ini_end)