tiny.tldr.formats.elf.addressing.size

1pub const size = @import("size.zig");

1const std = @import("std");2const root = @import("../../../root.zig");3const elf = @import("../root.zig");4const boundary = @import("boundary.zig");56const model = root.model;7const layout = elf.layout;8const section_state = elf.section_state;910const GlobalSymbol = layout.GlobalSymbol;11const ObjectFile = elf.parser.ObjectFile;12const SymbolRef = layout.SymbolRef;13const symbolSectionDiscarded = section_state.symbolSectionDiscarded;1415pub fn symbol(16    objects: []const ObjectFile,17    globals: *const std.StringHashMapUnmanaged(GlobalSymbol),18    object_index: usize,19    symbol_index: usize,20) model.Error!u64 {21    if (symbol_index >= objects[object_index].symbols.len) return error.UndefinedSymbol;22    const symbol_record = objects[object_index].symbols[symbol_index];23    if (symbol_record.isUndefined()) {24        const global = globals.get(symbol_record.name) orelse {25            if (symbol_record.isWeakUndefined()) return 0;26            if (boundary.forSymbol(symbol_record.name) != null) return 0;27            return error.UndefinedSymbol;28        };29        return symbol(objects, globals, global.ref.object_index, global.ref.symbol_index);30    }31    if (symbolSectionDiscarded(objects[object_index], symbol_record) and symbol_record.name.len != 0) {32        const global = globals.get(symbol_record.name) orelse return error.MissingSection;33        const current_ref = SymbolRef{ .object_index = object_index, .symbol_index = symbol_index };34        if (global.ref.eql(current_ref)) return error.MissingSection;35        return symbol(objects, globals, global.ref.object_index, global.ref.symbol_index);36    }37    if (symbol_record.isCommon() and symbol_record.name.len != 0) {38        const global = globals.get(symbol_record.name) orelse return error.UndefinedSymbol;39        const current_ref = SymbolRef{ .object_index = object_index, .symbol_index = symbol_index };40        if (!global.ref.eql(current_ref)) return symbol(objects, globals, global.ref.object_index, global.ref.symbol_index);41    }42    return symbol_record.size;43}