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- Emulator can now test the αcτµαlly pδrταblε εxεcµταblε bootloader

- Whipped up a webserver named redbean. It services 150k requests per
  second on a single core. Bundling assets inside zip enables extremely
  fast serving for two reasons. The first is that zip central directory
  lookups go faster than stat() system calls. The second is that both
  zip and gzip content-encoding use DEFLATE, therefore, compressed
  responses can be served via the sendfile() system call which does an
  in-kernel copy directly from the zip executable structure. Also note
  that red bean zip executables can be deployed easily to all platforms,
  since these native executables work on Linux, Mac, BSD, and Windows.

- Address sanitizer now works very well
This commit is contained in:
Justine Tunney 2020-09-06 21:39:00 -07:00
parent 7327c345f9
commit 416fd86676
230 changed files with 9835 additions and 5682 deletions
Download patch file Download diff file Expand all files Collapse all files

28
tool/build/lib/elfwriter.c
View file

@ -18,6 +18,7 @@
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/alg/arraylist.h"
#include "libc/alg/arraylist2.h"
#include "libc/assert.h"
#include "libc/bits/safemacros.h"
#include "libc/calls/calls.h"
@ -48,7 +49,7 @@ static const Elf64_Ehdr kObjHeader = {
static size_t AppendSection(struct ElfWriter *elf, const char *name,
int sh_type, int sh_flags) {
ssize_t section =
append(elf->shdrs,
APPEND(&elf->shdrs->p, &elf->shdrs->i, &elf->shdrs->n,
(&(Elf64_Shdr){.sh_type = sh_type,
.sh_flags = sh_flags,
.sh_entsize = elf->entsize,
@ -72,12 +73,13 @@ static struct ElfWriterSymRef AppendSymbol(struct ElfWriter *elf,
size_t st_size, size_t st_shndx,
enum ElfWriterSymOrder slg) {
ssize_t sym =
append(elf->syms[slg], (&(Elf64_Sym){.st_info = st_info,
.st_size = st_size,
.st_value = st_value,
.st_other = st_other,
.st_name = intern(elf->strtab, name),
.st_shndx = st_shndx}));
APPEND(&elf->syms[slg]->p, &elf->syms[slg]->i, &elf->syms[slg]->n,
(&(Elf64_Sym){.st_info = st_info,
.st_size = st_size,
.st_value = st_value,
.st_other = st_other,
.st_name = intern(elf->strtab, name),
.st_shndx = st_shndx}));
CHECK_NE(-1, sym);
return (struct ElfWriterSymRef){.slg = slg, .sym = sym};
}
@ -147,7 +149,7 @@ static void FlushTables(struct ElfWriter *elf) {
elf->ehdr->e_shstrndx = FlushStrtab(elf, ".shstrtab", elf->shstrtab);
WriteRelaSections(elf, symtab);
size = elf->shdrs->i * sizeof(elf->shdrs->p[0]);
elfwriter_align(elf, alignof(elf->shdrs->p[0]), sizeof(elf->shdrs->p[0]));
elfwriter_align(elf, alignof(Elf64_Shdr), sizeof(elf->shdrs->p[0]));
elf->ehdr->e_shoff = elf->wrote;
elf->ehdr->e_shnum = elf->shdrs->i;
elf->shdrs->p[symtab].sh_info =
@ -251,9 +253,9 @@ struct ElfWriterSymRef elfwriter_linksym(struct ElfWriter *elf,
void elfwriter_appendrela(struct ElfWriter *elf, uint64_t r_offset,
struct ElfWriterSymRef symkey, uint32_t type,
int64_t r_addend) {
CHECK_NE(-1,
append(elf->relas, (&(struct ElfWriterRela){.type = type,
.symkey = symkey,
.offset = r_offset,
.addend = r_addend})));
CHECK_NE(-1, APPEND(&elf->relas->p, &elf->relas->i, &elf->relas->n,
(&(struct ElfWriterRela){.type = type,
.symkey = symkey,
.offset = r_offset,
.addend = r_addend})));
}