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raddebugger/obsolete/dwarf/dwarf_expr_old.h
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// Copyright (c) Epic Games Tools
// Licensed under the MIT license (https://opensource.org/license/mit/)
#ifndef DWARF_EXPR_H
#define DWARF_EXPR_H
////////////////////////////////
// evaluator
#define DW_ExprValueType_IsSigned(x) ((x) == DW_ExprValueType_S8 || (x) == DW_ExprValueType_S16 || (x) == DW_ExprValueType_S32 || (x) == DW_ExprValueType_S64 || (x) == DW_ExprValueType_S128 || (x) == DW_ExprValueType_S256 || (x) == DW_ExprValueType_S512)
#define DW_ExprValueType_IsUnsigned(x) ((x) == DW_ExprValueType_U8 || (x) == DW_ExprValueType_U16 || (x) == DW_ExprValueType_U32 || (x) == DW_ExprValueType_U64 || (x) == DW_ExprValueType_U128 || (x) == DW_ExprValueType_U256 || (x) == DW_ExprValueType_U512)
#define DW_ExprValueType_IsFloat(x) ((x) == DW_ExprValueType_F32 || (x) == DW_ExprValueType_F64)
#define DW_ExprValueType_IsInt(x) (DW_ExprValueType_IsSigned(x) || DW_ExprValueType_IsUnsigned(x) || (x) == DW_ExprValueType_Addr)
typedef enum
{
DW_ExprValueType_Generic,
DW_ExprValueType_U8,
DW_ExprValueType_U16,
DW_ExprValueType_U32,
DW_ExprValueType_U64,
DW_ExprValueType_U128,
DW_ExprValueType_U256,
DW_ExprValueType_U512,
DW_ExprValueType_S8,
DW_ExprValueType_S16,
DW_ExprValueType_S32,
DW_ExprValueType_S64,
DW_ExprValueType_S128,
DW_ExprValueType_S256,
DW_ExprValueType_S512,
DW_ExprValueType_F32,
DW_ExprValueType_F64,
DW_ExprValueType_Addr,
DW_ExprValueType_Implicit,
DW_ExprValueType_Bool,
} DW_ExprValueType;
typedef S8 DW_ExprBool;
typedef struct DW_ExprValue
{
DW_ExprValueType type;
Rng1U64Array ranges;
U64 *offsets;
union {
U8 u8;
U16 u16;
U32 u32;
U64 u64;
U128 u128;
U256 u256;
U512 u512;
S8 s8;
S16 s16;
S32 s32;
S64 s64;
F32 f32;
F64 f64;
U64 addr;
DW_ExprBool boolean;
String8 implicit;
String8 generic;
};
} DW_ExprValue;
typedef struct DW_ExprValueNode
{
DW_ExprValue v;
struct DW_ExprValueNode *next;
} DW_ExprValueNode;
typedef enum
{
DW_PieceKind_Null,
DW_PieceKind_Value,
DW_PieceKind_Undefined,
} DW_PieceKind;
typedef struct DW_Piece
{
DW_PieceKind kind;
U64 bit_size;
U8 *value;
} DW_Piece;
typedef struct DW_PieceNode
{
DW_Piece v;
struct DW_PieceNode *next;
} DW_PieceNode;
typedef struct DW_PieceList
{
U64 count;
DW_PieceNode *first;
DW_PieceNode *last;
} DW_PieceList;
typedef struct DW_ExprStack
{
U64 count;
DW_ExprValueNode *top;
} DW_ExprStack;
typedef enum
{
DW_ExprEvalResult_Fail,
DW_ExprEvalResult_Ok,
DW_ExprEvalResult_Maybe,
DW_ExprEvalResult_ExecOpLimitReached,
} DW_ExprEvalResult;
////////////////////////////////
// encoder
typedef enum
{
DW_ExprEncType_Null,
DW_ExprEncType_Op,
DW_ExprEncType_U8,
DW_ExprEncType_U16,
DW_ExprEncType_U32,
DW_ExprEncType_U64,
DW_ExprEncType_S8,
DW_ExprEncType_S16,
DW_ExprEncType_S32,
DW_ExprEncType_S64,
DW_ExprEncType_ULEB128,
DW_ExprEncType_SLEB128,
DW_ExprEncType_Addr,
DW_ExprEncType_Block,
DW_ExprEncType_DwarfUInt,
DW_ExprEncType_Label,
DW_ExprEncType_DeclLabel,
} DW_ExprEncType;
typedef struct DW_ExprEnc
{
DW_ExprEncType type;
union {
DW_ExprOp op;
U8 u8;
U16 u16;
U32 u32;
U64 u64;
S8 s8;
S16 s16;
S32 s32;
S64 s64;
U64 addr;
String8 block;
String8 label;
};
} DW_ExprEnc;
#define DW_ExprEnc_Op(v) { .type = DW_ExprEncType_Op, .op = DW_ExprOp_##v }
#define DW_ExprEnc_U8(v) { .type = DW_ExprEncType_U8, .u8 = v }
#define DW_ExprEnc_U16(v) { .type = DW_ExprEncType_U16, .u16 = v }
#define DW_ExprEnc_U32(v) { .type = DW_ExprEncType_U32, .u32 = v }
#define DW_ExprEnc_U64(v) { .type = DW_ExprEncType_U64, .u64 = v }
#define DW_ExprEnc_S8(v) { .type = DW_ExprEncType_S8, .s8 = v }
#define DW_ExprEnc_S16(v) { .type = DW_ExprEncType_S16, .s16 = v }
#define DW_ExprEnc_S32(v) { .type = DW_ExprEncType_S32, .s32 = v }
#define DW_ExprEnc_S64(v) { .type = DW_ExprEncType_S64, .s64 = v }
#define DW_ExprEnc_ULEB128(v) { .type = DW_ExprEncType_ULEB128, .u64 = v }
#define DW_ExprEnc_SLEB128(v) { .type = DW_ExprEncType_SLEB128, .s64 = v }
#define DW_ExprEnc_Addr(v) { .type = DW_ExprEncType_Addr, .addr = v }
#define DW_ExprEnc_Block(v) { .type = DW_ExprEncType_Block, .block = v }
#define DW_ExprEnc_UInt(v) { .type = DW_ExprEncType_DwarfUInt, .u64 = v }
#define DW_ExprEnc_Label(v) { .type = DW_ExprEncType_Label, .label = str8_lit_comp(v) }
#define DW_ExprEnc_DeclLabel(v) { .type = DW_ExprEncType_DeclLabel, .label = str8_lit_comp(v) }
////////////////////////////////
// pieces
internal DW_PieceNode * dw_piece_list_push(Arena *arena, DW_PieceList *list, DW_Piece v);
// size -> type
internal DW_ExprValueType dw_expr_unsigned_value_type_from_bit_size(U64 bit_size);
internal DW_ExprValueType dw_expr_signed_value_type_from_bit_size(U64 bit_size);
internal DW_ExprValueType dw_expr_float_type_from_bit_size(U64 bit_size);
// type -> size
internal U64 dw_expr_byte_size_from_value_type(U64 addr_size, DW_ExprValueType k);
// typer
internal DW_ExprValueType dw_expr_pick_common_value_type(DW_ExprValueType rhs, DW_ExprValueType lhs);
internal DW_ExprValueType dw_expr_pick_common_compar_value_type(DW_ExprValueType rhs, DW_ExprValueType lhs);
internal DW_ExprValue dw_expr_cast(DW_ExprValue value, DW_ExprValueType type);
// arithmetic operators
internal DW_ExprValue dw_expr_add (DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_minus(DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_mul (DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_div (DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_mod (DW_ExprValue rhs, DW_ExprValue lhs);
// comparison operators
internal DW_ExprValue dw_expr_eq(DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_ge(DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_gt(DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_le(DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_lt(DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_ne(DW_ExprValue rhs, DW_ExprValue lhs);
// bitwise operators
internal DW_ExprValue dw_expr_xor (DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_and (DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_or (DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_shl (DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_shr (DW_ExprValue rhs, DW_ExprValue lhs);
internal DW_ExprValue dw_expr_shra(DW_ExprValue rhs, DW_ExprValue lhs);
// unary operators
internal DW_ExprValue dw_expr_abs(DW_ExprValue value);
internal DW_ExprValue dw_expr_neg(DW_ExprValue value);
internal DW_ExprValue dw_expr_not(DW_ExprValue value);
// stack
internal DW_ExprValueNode * dw_expr_stack_push(Arena *arena, DW_ExprStack *stack, DW_ExprValue value);
internal DW_ExprValueNode * dw_expr_stack_push_unsigned(Arena *arena, DW_ExprStack *stack, void *value, U64 value_size);
internal DW_ExprValue dw_expr_stack_pop(DW_ExprStack *stack);
internal DW_ExprValue dw_expr_stack_peek(DW_ExprStack *stack);
internal DW_ExprValueNode * dw_expr_stack_pick(DW_ExprStack *stack, U64 idx);
// value helpers
internal String8 dw_string_from_expr_value(Arena *arena, U64 addr_size, DW_ExprValue v);
// evaluator
internal DW_ExprEvalResult dw_eval_expr(Arena *arena, Arch arch, DW_Format format, U64 frame_base, U64 cfa, U64 tls_base, U64 op_limit, DW_Expr expr, void *reg_block, MachineOp_MemRead *mem_read, void *mem_read_ud, DW_ExprValue *value_out);
#endif //DWARF_EXPR_H
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