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Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
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tool/build/lib/elfwriter.h Normal file
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#ifndef COSMOPOLITAN_TOOL_BUILD_LIB_ELFWRITER_H_
#define COSMOPOLITAN_TOOL_BUILD_LIB_ELFWRITER_H_
#include "libc/elf/struct/ehdr.h"
#include "libc/elf/struct/rela.h"
#include "libc/elf/struct/shdr.h"
#include "libc/elf/struct/sym.h"
#include "tool/build/lib/interner.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
struct ElfWriter {
char *path;
char *tmppath;
int fd;
void *map;
size_t mapsize;
size_t wrote;
size_t entsize;
size_t addralign;
struct Elf64_Ehdr *ehdr;
struct {
size_t i, n;
Elf64_Shdr *p;
} shdrs[1];
struct ElfWriterSyms {
size_t i, n;
Elf64_Sym *p;
} syms[3][1];
struct {
size_t i, j, n;
struct ElfWriterRela {
uint64_t offset;
struct ElfWriterSymRef {
enum ElfWriterSymOrder {
kElfWriterSymSection,
kElfWriterSymLocal,
kElfWriterSymGlobal
} slg;
uint32_t sym;
} symkey;
uint32_t type;
int64_t addend;
} * p;
} relas[1];
struct Interner *strtab;
struct Interner *shstrtab;
};
struct ElfWriter *elfwriter_open(const char *, int) nodiscard;
void elfwriter_cargoculting(struct ElfWriter *);
void elfwriter_close(struct ElfWriter *);
void elfwriter_align(struct ElfWriter *, size_t, size_t);
size_t elfwriter_startsection(struct ElfWriter *, const char *, int, int);
void *elfwriter_reserve(struct ElfWriter *, size_t);
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);
struct ElfWriterSymRef elfwriter_linksym(struct ElfWriter *, const char *, int,
int);
struct ElfWriterSymRef elfwriter_appendsym(struct ElfWriter *, const char *,
int, int, size_t, size_t);
void elfwriter_yoink(struct ElfWriter *, const char *);
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_TOOL_BUILD_LIB_ELFWRITER_H_ */