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8b0f47bfa4
Wasm has no unified virtual memory space as other object formats and architectures do, so previously WasmObjectFile reported 0 for all section addresses, and until 428cf71ff used section offsets for function symbols. Now we use file offsets for function symbols, and this change switches section addresses to do the same (in linked files). The main result of this is that objdump now reports VMAs in section listings, and also uses file offets rather than section offsets when disassembling linked binaries (matching the behavior of other disassemblers and stack traces produced by browwsers). To make this work, this PR also updates objdump's generation of synthetics fallback symbols to match lib/Object and also correctly plumbs symbol types for regular and dummy symbols through to the backend to avoid needing special knowledge of address 0. This also paves the way for generating symbols from name sections rather than symbol tables or imports (see #76107) by allowing the disassembler's synthetic fallback symbols match the name-section generated symbols (in a followup PR).