mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-03 09:48:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Rewrite Cosmopolitan Ar

Browse source 
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.
This commit is contained in:
Justine Tunney 2023-07-02 10:19:16 -07:00
parent 197aa0d465
commit 0c630d95b5
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
27 changed files with 916 additions and 341 deletions
Download patch file Download diff file Expand all files Collapse all files

3
tool/build/fixupobj.c
View file

@ -20,6 +20,7 @@
#include "libc/calls/calls.h"
#include "libc/calls/struct/stat.h"
#include "libc/dce.h"
#include "libc/elf/def.h"
#include "libc/elf/elf.h"
#include "libc/elf/scalar.h"
#include "libc/elf/struct/rela.h"
@ -358,7 +359,7 @@ static void FixupObject(void) {
if (!IsElf64Binary(elf, esize)) {
Die("not an elf64 binary");
}
if (!(syms = GetElfSymbolTable(elf, esize, SHT_SYMTAB, &symcount))) {
if (!(syms = GetElfSymbols(elf, esize, SHT_SYMTAB, &symcount))) {
Die("missing elf symbol table");
}
if (!(secstrs = GetElfSectionNameStringTable(elf, esize))) {