35 lines
660 B
C
35 lines
660 B
C
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// SPDX-License-Identifier: GPL-2.0
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#include <linux/bpf.h>
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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SEC("socket")
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__description("scalars: find linked scalars")
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__failure
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__msg("math between fp pointer and 2147483647 is not allowed")
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__naked void scalars(void)
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{
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asm volatile (" \
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r0 = 0; \
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r1 = 0x80000001 ll; \
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r1 /= 1; \
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r2 = r1; \
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r4 = r1; \
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w2 += 0x7FFFFFFF; \
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w4 += 0; \
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if r2 == 0 goto l1; \
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exit; \
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l1: \
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r4 >>= 63; \
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r3 = 1; \
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r3 -= r4; \
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r3 *= 0x7FFFFFFF; \
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r3 += r10; \
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*(u8*)(r3 - 1) = r0; \
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exit; \
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" ::: __clobber_all);
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}
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char _license[] SEC("license") = "GPL";
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