gcc/config/bpf/core-builtins.h

   1 #ifndef BPF_CORE_BUILTINS_H
   2 #define BPF_CORE_BUILTINS_H
   3
   4 #include "btfext-out.h"
   5
   6 enum bpf_builtins
   7 {
   8   BPF_BUILTIN_UNUSED = 0,
   9   /* Built-ins for non-generic loads and stores.  */
  10   BPF_BUILTIN_LOAD_BYTE,
  11   BPF_BUILTIN_LOAD_HALF,
  12   BPF_BUILTIN_LOAD_WORD,
  13
  14   /* Compile Once - Run Everywhere (CO-RE) support.  */
  15   BPF_CORE_BUILTINS_MARKER = 10,
  16   BPF_BUILTIN_PRESERVE_ACCESS_INDEX,
  17   BPF_BUILTIN_PRESERVE_FIELD_INFO,
  18   BPF_BUILTIN_BTF_TYPE_ID,
  19   BPF_BUILTIN_PRESERVE_TYPE_INFO,
  20   BPF_BUILTIN_PRESERVE_ENUM_VALUE,
  21
  22   /* CO-RE INTERNAL reloc.  */
  23   BPF_BUILTIN_CORE_RELOC,
  24
  25   BPF_BUILTIN_MAX,
  26 };
  27
  28 enum bpf_field_info_kind {
  29   BPF_FIELD_BYTE_OFFSET = 0,    /* field byte offset */
  30   BPF_FIELD_BYTE_SIZE = 1,
  31   BPF_FIELD_EXISTS = 2,         /* field existence in target kernel */
  32   BPF_FIELD_SIGNED = 3,
  33   BPF_FIELD_LSHIFT_U64 = 4,
  34   BPF_FIELD_RSHIFT_U64 = 5,
  35 };
  36
  37 /* second argument to __builtin_btf_type_id () built-in */
  38 enum bpf_type_id_kind {
  39   BPF_TYPE_ID_LOCAL = 0,                /* BTF type ID in local program */
  40   BPF_TYPE_ID_TARGET = 1,               /* BTF type ID in target kernel */
  41 };
  42
  43 /* second argument to __builtin_preserve_type_info () built-in */
  44 enum bpf_type_info_kind {
  45   BPF_TYPE_EXISTS = 0,          /* type existence in target kernel */
  46   BPF_TYPE_SIZE = 1,            /* type size in target kernel */
  47   BPF_TYPE_MATCHES = 2,         /* type match in target kernel */
  48 };
  49
  50 /* second argument to __builtin_preserve_enum_value () built-in */
  51 enum bpf_enum_value_kind {
  52   BPF_ENUMVAL_EXISTS = 0,               /* enum value existence in kernel */
  53   BPF_ENUMVAL_VALUE = 1,                /* enum value value relocation */
  54 };
  55
  56 extern GTY (()) tree bpf_builtins[(int) BPF_BUILTIN_MAX];
  57
  58 void bpf_init_core_builtins (void);
  59 rtx bpf_expand_core_builtin (tree exp, enum bpf_builtins code);
  60 tree bpf_resolve_overloaded_core_builtin (location_t loc, tree fndecl,
  61                                           void *arglist);
  62 void
  63 bpf_output_core_reloc (rtx *operands, int nr_ops);
  64
  65 #endif