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selftests/bpf: Correct various core_reloc 64-bit assumptions

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Ensure that types are memory layout- and field alignment-compatible regardless
of 32/64-bitness mix of libbpf and BPF architecture.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20200813204945.1020225-8-andriin@fb.com
This commit is contained in:
Andrii Nakryiko
2020-08-13 13:49:43 -07:00
committed by Alexei Starovoitov
parent 4c01925f58
commit 5705d70583
2 changed files with 47 additions and 42 deletions
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20
tools/testing/selftests/bpf/prog_tests/core_reloc.c
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@@ -237,8 +237,8 @@
.union_sz = sizeof(((type *)0)->union_field), \
.arr_sz = sizeof(((type *)0)->arr_field), \
.arr_elem_sz = sizeof(((type *)0)->arr_field[0]), \
.ptr_sz = sizeof(((type *)0)->ptr_field), \
.enum_sz = sizeof(((type *)0)->enum_field), \
.ptr_sz = 8, /* always 8-byte pointer for BPF */ \
.enum_sz = sizeof(((type *)0)->enum_field), \
}
#define SIZE_CASE(name) { \
@@ -432,20 +432,20 @@ static struct core_reloc_test_case test_cases[] = {
.sb4 = -1,
.sb20 = -0x17654321,
.u32 = 0xBEEF,
.s32 = -0x3FEDCBA987654321,
.s32 = -0x3FEDCBA987654321LL,
}),
BITFIELDS_CASE(bitfields___bitfield_vs_int, {
.ub1 = 0xFEDCBA9876543210,
.ub1 = 0xFEDCBA9876543210LL,
.ub2 = 0xA6,
.ub7 = -0x7EDCBA987654321,
.sb4 = -0x6123456789ABCDE,
.sb20 = 0xD00D,
.ub7 = -0x7EDCBA987654321LL,
.sb4 = -0x6123456789ABCDELL,
.sb20 = 0xD00DLL,
.u32 = -0x76543,
.s32 = 0x0ADEADBEEFBADB0B,
.s32 = 0x0ADEADBEEFBADB0BLL,
}),
BITFIELDS_CASE(bitfields___just_big_enough, {
.ub1 = 0xF,
.ub2 = 0x0812345678FEDCBA,
.ub1 = 0xFLL,
.ub2 = 0x0812345678FEDCBALL,
}),
BITFIELDS_ERR_CASE(bitfields___err_too_big_bitfield),