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https://github.com/jart/cosmopolitan.git
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0c630d95b5
The build/bootstrap/ar.com program is now tinier. This change reduces its size from 140kb to 53kb. Nothing was traded away. Cosmopolitan Ar performance is now 2x better than llvm-ar largely thanks to using the copy_file_range() system call. This change homebrews a new allocation API that addresses the shortcomings of the C standard library design. Using these new balloc() and reballoc() functions I managed to reduce memory consumption so much that Cosmpolitan Ar should now use roughly 100x fewer bytes of peak resident memory compared to llvm-ar. Correct behavior with better compatibility has been assured. Binary output is now pretty much bit-identical to llvm-ar, as of this change. This can and should be the living proof we need to show that a better world is possible for software.
29 lines
1.7 KiB
C
29 lines
1.7 KiB
C
#ifndef COSMOPOLITAN_LIBC_ELF_H_
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#define COSMOPOLITAN_LIBC_ELF_H_
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#include "libc/elf/struct/ehdr.h"
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#include "libc/elf/struct/phdr.h"
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#include "libc/elf/struct/shdr.h"
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#include "libc/elf/struct/sym.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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#ifdef COSMO
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § executable linkable format ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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bool IsElfSymbolContent(const Elf64_Sym *);
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bool IsElf64Binary(const Elf64_Ehdr *, size_t);
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char *GetElfStringTable(const Elf64_Ehdr *, size_t, const char *);
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Elf64_Sym *GetElfSymbols(const Elf64_Ehdr *, size_t, int, Elf64_Xword *);
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Elf64_Shdr *GetElfSymbolTable(const Elf64_Ehdr *, size_t, int, Elf64_Xword *);
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Elf64_Phdr *GetElfProgramHeaderAddress(const Elf64_Ehdr *, size_t, Elf64_Half);
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Elf64_Shdr *GetElfSectionHeaderAddress(const Elf64_Ehdr *, size_t, Elf64_Half);
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const char *GetElfString(const Elf64_Ehdr *, size_t, const char *, Elf64_Word);
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void *GetElfSectionAddress(const Elf64_Ehdr *, size_t, const Elf64_Shdr *);
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const char *GetElfSectionName(const Elf64_Ehdr *, size_t, Elf64_Shdr *);
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char *GetElfSectionNameStringTable(const Elf64_Ehdr *, size_t);
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#endif /* COSMO */
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_ELF_H_ */
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