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23b72eb617
This change fixes minor bugs and adds a feature, which lets us store the ELF symbol table, inside the ZIP directory. We use the path /zip/.symtab which can be safely removed using a zip editing tool, to make the binary smaller after compilation. This supplements the existing method of using a separate .com.dbg file, which is still supported. The intent is people don't always know that it's a good idea to download the debug file. It's not great having someone's first experience be a crash report, that only has numbers rather than symbols. This will help fix that!
41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
#ifndef COSMOPOLITAN_LIBC_SYMBOLS_H_
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#define COSMOPOLITAN_LIBC_SYMBOLS_H_
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#include "libc/bits/bits.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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#define SYMBOLS_MAGIC READ32LE("SYMT")
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#define SYMBOLS_ABI 1
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struct Symbol {
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unsigned x; /* start (relative to addr_base) */
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unsigned y; /* start + size - 1 (inclusive) */
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};
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struct SymbolTable {
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uint32_t magic; /* 0xFEEDABEE little endian */
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uint32_t abi; /* 1 */
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uint64_t count; /* of `symbols` */
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uint64_t size; /* file size */
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uint64_t mapsize; /* of this object */
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int64_t addr_base; /* IMAGE_BASE_VIRTUAL */
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int64_t addr_end; /* _end - 1 */
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uint32_t *names; /* relative to `name_base` */
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char *name_base; /* double-nul terminated w/ empty first */
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uint32_t names_offset; /* for file loading */
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uint32_t name_base_offset; /* for file loading */
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struct Symbol symbols[]; /* sorted and non-overlapping intervals */
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};
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struct SymbolTable *GetSymbolTable(void);
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const char *FindComBinary(void);
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const char *FindDebugBinary(void);
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struct SymbolTable *OpenSymbolTable(const char *);
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int CloseSymbolTable(struct SymbolTable **);
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int __hook(void *, struct SymbolTable *);
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int __get_symbol(struct SymbolTable *, intptr_t);
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char *__get_symbol_name(struct SymbolTable *, int);
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_SYMBOLS_H_ */
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