28 lines
707 B
Bash
28 lines
707 B
Bash
#!/bin/sh
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# Print out the KASAN_SHADOW_OFFSETS required to place the KASAN SHADOW
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# start address at the mid-point of the kernel VA space
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print_kasan_offset () {
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printf "%02d\t" $1
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printf "0x%08x00000000\n" $(( (0xffffffff & (-1 << ($1 - 1 - 32))) \
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+ (1 << ($1 - 32 - $2)) \
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- (1 << (64 - 32 - $2)) ))
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}
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echo KASAN_SHADOW_SCALE_SHIFT = 3
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printf "VABITS\tKASAN_SHADOW_OFFSET\n"
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print_kasan_offset 48 3
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print_kasan_offset 47 3
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print_kasan_offset 42 3
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print_kasan_offset 39 3
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print_kasan_offset 36 3
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echo
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echo KASAN_SHADOW_SCALE_SHIFT = 4
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printf "VABITS\tKASAN_SHADOW_OFFSET\n"
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print_kasan_offset 48 4
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print_kasan_offset 47 4
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print_kasan_offset 42 4
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print_kasan_offset 39 4
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print_kasan_offset 36 4
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