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159 lines (132 loc) · 4.44 KB
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#ifndef _CTF_H
#define _CTF_H
/*
SPDX-License-Identifier: GPL-2.0-only
Copyright (C) 2019 Arnaldo Carvalho de Melo <acme@redhat.com>
*/
#include <stdint.h>
struct ctf_header {
uint16_t ctf_magic; /* Header magic value */
#define CTF_MAGIC 0xcff1
#define CTF_MAGIC_SWAP 0xf1cf
uint8_t ctf_version; /* Header version */
#define CTF_VERSION 2
uint8_t ctf_flags; /* Header flags */
#define CTF_FLAGS_COMPR 0x01
uint32_t ctf_parent_label; /* Label of parent CTF object */
uint32_t ctf_parent_name; /* Name of parent CTF object */
/* All offsets are in bytes are relative to the end of
* this header.
*/
uint32_t ctf_label_off; /* Offset of label section */
uint32_t ctf_object_off; /* Offset of data object section */
uint32_t ctf_func_off; /* Offset of function section */
uint32_t ctf_type_off; /* Offset of type section */
uint32_t ctf_str_off; /* Offset of string section */
uint32_t ctf_str_len; /* Length of string section */
};
#define CTF_REF_OFFSET(REF) ((REF) & 0x7fffffff)
#define CTF_REF_TBL_ID(REF) (((REF) >> 31) & 0x1)
#define CTF_STR_TBL_ID_0 0
#define CTF_STR_TBL_ID_1 1
#define CTF_REF_ENCODE(TBL, OFF) (((TBL) << 31) | (OFF))
struct ctf_label_ent {
uint32_t ctf_label_ref;
uint32_t ctf_type_index;
};
/* Types are encoded with ctf_short_type so long as the ctf_size
* field can be fully represented in a uint16_t. If not, then
* the ctf_size is given the value 0xffff and ctf_full_type is
* used.
*/
struct ctf_short_type {
uint32_t ctf_name;
uint16_t ctf_info;
union {
uint16_t ctf_size;
uint16_t ctf_type;
};
};
struct ctf_full_type {
struct ctf_short_type base;
uint32_t ctf_size_high;
uint32_t ctf_size_low;
};
#define CTF_GET_KIND(VAL) (((VAL) >> 11) & 0x1f)
#define CTF_GET_VLEN(VAL) ((VAL) & 0x3ff)
#define CTF_ISROOT(VAL) (((VAL) & 0x400) != 0)
#define CTF_INFO_ENCODE(KIND, VLEN, ISROOT) \
(((ISROOT) ? 0x400 : 0) | ((KIND) << 11) | (VLEN))
#define CTF_TYPE_KIND_UNKN 0 /* Unknown */
#define CTF_TYPE_KIND_INT 1 /* Integer */
#define CTF_TYPE_KIND_FLT 2 /* Float */
#define CTF_TYPE_KIND_PTR 3 /* Pointer */
#define CTF_TYPE_KIND_ARR 4 /* Array */
#define CTF_TYPE_KIND_FUNC 5 /* Function */
#define CTF_TYPE_KIND_STR 6 /* Struct */
#define CTF_TYPE_KIND_UNION 7 /* Union */
#define CTF_TYPE_KIND_ENUM 8 /* Enumeration */
#define CTF_TYPE_KIND_FWD 9 /* Forward */
#define CTF_TYPE_KIND_TYPDEF 10 /* Typedef */
#define CTF_TYPE_KIND_VOLATILE 11 /* Volatile */
#define CTF_TYPE_KIND_CONST 12 /* Const */
#define CTF_TYPE_KIND_RESTRICT 13 /* Restrict */
#define CTF_TYPE_KIND_MAX 31
#define CTF_TYPE_INT_ATTRS(VAL) ((VAL) >> 24)
#define CTF_TYPE_INT_OFFSET(VAL) (((VAL) >> 16) & 0xff)
#define CTF_TYPE_INT_BITS(VAL) ((VAL) & 0xffff)
#define CTF_TYPE_INT_ENCODE(ATTRS, OFF, BITS) \
(((ATTRS) << 24) | ((OFF) << 16) | (BITS))
/* Integer type attributes */
#define CTF_TYPE_INT_SIGNED 0x1
#define CTF_TYPE_INT_CHAR 0x2
#define CTF_TYPE_INT_BOOL 0x4
#define CTF_TYPE_INT_VARARGS 0x8
#define CTF_TYPE_FP_ATTRS(VAL) ((VAL) >> 24)
#define CTF_TYPE_FP_OFFSET(VAL) (((VAL) >> 16) & 0xff)
#define CTF_TYPE_FP_BITS(VAL) ((VAL) & 0xffff)
#define CTF_TYPE_FP_ENCODE(ATTRS, OFF, BITS) \
(((ATTRS) << 24) | ((OFF) << 16) | (BITS))
/* Possible values for the float type attribute field */
#define CTF_TYPE_FP_SINGLE 1
#define CTF_TYPE_FP_DOUBLE 2
#define CTF_TYPE_FP_CMPLX 3
#define CTF_TYPE_FP_CMPLX_DBL 4
#define CTF_TYPE_FP_CMPLX_LDBL 5
#define CTF_TYPE_FP_LDBL 6
#define CTF_TYPE_FP_INTVL 7
#define CTF_TYPE_FP_INTVL_DBL 8
#define CTF_TYPE_FP_INTVL_LDBL 9
#define CTF_TYPE_FP_IMGRY 10
#define CTF_TYPE_FP_IMGRY_DBL 11
#define CTF_TYPE_FP_IMGRY_LDBL 12
#define CTF_TYPE_FP_MAX 12
struct ctf_enum {
uint32_t ctf_enum_name;
uint32_t ctf_enum_val;
};
struct ctf_array {
uint16_t ctf_array_type;
uint16_t ctf_array_index_type;
uint32_t ctf_array_nelems;
};
/* Struct members are encoded with either ctf_short_member or
* ctf_full_member, depending upon the 'size' of the struct or
* union being defined. If it is less than CTF_SHORT_MEMBER_LIMIT
* then ctf_short_member objects are used to encode, else
* ctf_full_member is used.
*/
#define CTF_SHORT_MEMBER_LIMIT 8192
struct ctf_short_member {
uint32_t ctf_member_name;
uint16_t ctf_member_type;
uint16_t ctf_member_offset;
};
struct ctf_full_member {
uint32_t ctf_member_name;
uint16_t ctf_member_type;
uint16_t ctf_member_unused;
uint32_t ctf_member_offset_high;
uint32_t ctf_member_offset_low;
};
#endif /* _CTF_H */