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Rewrite .zip.o file linker

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This change takes an entirely new approach to the incremental linking of
pkzip executables. The assets created by zipobj.com are now treated like
debug data. After a .com.dbg is compiled, fixupobj.com should be run, so
it can apply fixups to the offsets and move the zip directory to the end
of the file. Since debug data doesn't get objcopy'd, a new tool has been
introduced called zipcopy.com which should be run after objcopy whenever
a .com file is created. This is all automated by the `cosmocc` toolchain
which is rapidly becoming the new recommended approach.

This change also introduces the new C23 checked arithmetic macros.
This commit is contained in:
Justine Tunney 2023-06-10 09:15:19 -07:00
parent f6407d5f7c
commit 8ff48201ca
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GPG key ID: BE714B4575D6E328
125 changed files with 1056 additions and 928 deletions
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3
tool/build/lib/elfwriter.h
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@ -64,6 +64,7 @@ void elfwriter_commit(struct ElfWriter *, size_t);
void elfwriter_finishsection(struct ElfWriter *);
void elfwriter_appendrela(struct ElfWriter *, uint64_t, struct ElfWriterSymRef,
uint32_t, int64_t);
uint32_t elfwriter_relatype_pc32(const struct ElfWriter *);
uint32_t elfwriter_relatype_abs32(const struct ElfWriter *);
struct ElfWriterSymRef elfwriter_linksym(struct ElfWriter *, const char *, int,
int);
@ -73,7 +74,7 @@ void elfwriter_yoink(struct ElfWriter *, const char *, int);
void elfwriter_setsection(struct ElfWriter *, struct ElfWriterSymRef, uint16_t);
void elfwriter_zip(struct ElfWriter *, const char *, const char *, size_t,
const void *, size_t, uint32_t, struct timespec,
struct timespec, struct timespec, bool, uint64_t, size_t);
struct timespec, struct timespec, bool);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */