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Add glob and some finer tuning of documentation

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This commit is contained in:
Justine Tunney 2020-06-21 00:10:11 -07:00
parent 799e24a87b
commit d51409ccd9
77 changed files with 1321 additions and 736 deletions
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30
libc/elf/elf.h
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@ -18,12 +18,10 @@ COSMOPOLITAN_C_START_
struct MappedFile;
Elf64_Ehdr *mapelfread(const char *filename, struct MappedFile *mf);
char *getelfstringtable(const Elf64_Ehdr *elf, size_t mapsize);
Elf64_Sym *getelfsymboltable(const Elf64_Ehdr *elf, size_t mapsize,
Elf64_Xword *out_count);
Elf64_Shdr *getelfsectionbyaddress(const Elf64_Ehdr *elf, size_t mapsize,
void *addr);
Elf64_Ehdr *mapelfread(const char *, struct MappedFile *);
char *getelfstringtable(const Elf64_Ehdr *, size_t);
Elf64_Sym *getelfsymboltable(const Elf64_Ehdr *, size_t, Elf64_Xword *);
Elf64_Shdr *getelfsectionbyaddress(const Elf64_Ehdr *, size_t, void *);
forceinline void checkelfaddress(const Elf64_Ehdr *elf, size_t mapsize,
intptr_t addr, size_t addrsize) {
@ -66,8 +64,9 @@ static inline Elf64_Shdr *getelfsectionheaderaddress(const Elf64_Ehdr *elf,
static inline void *getelfsectionaddress(const Elf64_Ehdr *elf, size_t mapsize,
const Elf64_Shdr *shdr) {
intptr_t addr = (intptr_t)elf + (intptr_t)shdr->sh_offset;
intptr_t size = (intptr_t)shdr->sh_size;
intptr_t addr, size;
addr = (intptr_t)elf + (intptr_t)shdr->sh_offset;
size = (intptr_t)shdr->sh_size;
checkelfaddress(elf, mapsize, addr, size);
return (void *)addr;
}
@ -83,13 +82,16 @@ static inline void getelfvirtualaddressrange(const Elf64_Ehdr *elf,
size_t elfsize,
intptr_t *out_start,
intptr_t *out_end) {
intptr_t start = INTPTR_MAX;
intptr_t end = 0;
for (unsigned i = 0; i < elf->e_phnum; ++i) {
Elf64_Phdr *phdr = getelfsegmentheaderaddress(elf, elfsize, i);
unsigned i;
Elf64_Phdr *phdr;
intptr_t start, end, pstart, pend;
start = INTPTR_MAX;
end = 0;
for (i = 0; i < elf->e_phnum; ++i) {
phdr = getelfsegmentheaderaddress(elf, elfsize, i);
if (phdr->p_type != PT_LOAD) continue;
intptr_t pstart = phdr->p_vaddr;
intptr_t pend = phdr->p_vaddr + phdr->p_memsz;
pstart = phdr->p_vaddr;
pend = phdr->p_vaddr + phdr->p_memsz;
if (pstart < start) start = pstart;
if (pend > end) end = pend;
}