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https://github.com/torvalds/linux
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c12d3362a7
In order to use 128-bit integer arithmetic in C code, the architecture needs to have declared support for it by setting ARCH_SUPPORTS_INT128, and it requires a version of the toolchain that supports this at build time. This is why all existing tests for ARCH_SUPPORTS_INT128 also test whether __SIZEOF_INT128__ is defined, since this is only the case for compilers that can support 128-bit integers. Let's fold this additional test into the Kconfig declaration of ARCH_SUPPORTS_INT128 so that we can also use the symbol in Makefiles, e.g., to decide whether a certain object needs to be included in the first place. Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
89 lines
1.6 KiB
C
89 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LIB_UBSAN_H
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#define _LIB_UBSAN_H
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enum {
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type_kind_int = 0,
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type_kind_float = 1,
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type_unknown = 0xffff
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};
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struct type_descriptor {
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u16 type_kind;
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u16 type_info;
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char type_name[1];
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};
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struct source_location {
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const char *file_name;
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union {
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unsigned long reported;
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struct {
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u32 line;
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u32 column;
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};
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};
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};
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struct overflow_data {
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struct source_location location;
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struct type_descriptor *type;
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};
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struct type_mismatch_data {
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struct source_location location;
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struct type_descriptor *type;
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unsigned long alignment;
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unsigned char type_check_kind;
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};
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struct type_mismatch_data_v1 {
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struct source_location location;
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struct type_descriptor *type;
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unsigned char log_alignment;
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unsigned char type_check_kind;
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};
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struct type_mismatch_data_common {
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struct source_location *location;
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struct type_descriptor *type;
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unsigned long alignment;
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unsigned char type_check_kind;
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};
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struct nonnull_arg_data {
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struct source_location location;
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struct source_location attr_location;
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int arg_index;
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};
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struct out_of_bounds_data {
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struct source_location location;
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struct type_descriptor *array_type;
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struct type_descriptor *index_type;
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};
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struct shift_out_of_bounds_data {
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struct source_location location;
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struct type_descriptor *lhs_type;
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struct type_descriptor *rhs_type;
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};
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struct unreachable_data {
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struct source_location location;
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};
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struct invalid_value_data {
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struct source_location location;
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struct type_descriptor *type;
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};
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#if defined(CONFIG_ARCH_SUPPORTS_INT128)
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typedef __int128 s_max;
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typedef unsigned __int128 u_max;
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#else
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typedef s64 s_max;
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typedef u64 u_max;
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#endif
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#endif
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