mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-06-28 07:18:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Revert "Rewrite ZipOS"

Browse source 
This reverts commit b01282e23e. Some tests
are broken. It's not clear how it'll impact metal yet. Let's revisit the
memory optimization benefits of this change again sometime soon.
This commit is contained in:
Justine Tunney 2023-10-03 14:40:03 -07:00
parent ee8a861635
commit ff250a0c10
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
21 changed files with 420 additions and 407 deletions
Download patch file Download diff file Expand all files Collapse all files

14
libc/intrin/getmainstack.c
View file

@ -28,14 +28,9 @@
#include "libc/sysv/consts/rlim.h"
#include "libc/sysv/consts/rlimit.h"
// Hack for guessing the unknowable boundaries of _start()'s stack
// Hack for guessing boundaries of _start()'s stack
//
// This code always guesses correctly on Windows because WinMain()
// is written to allocate a stack ourself. Local testing on Linux,
// XNU, FreeBSD, OpenBSD, and NetBSD says that accuracy is ±1 page
// and that error rate applies to both beginning and end addresses
//
// Every UNIX system in our support vector creates arg blocks like
// Every UNIX system in our support vector creates arg blocks like:
//
// <HIGHEST-STACK-ADDRESS>
// last environ string
@ -60,6 +55,11 @@
// up to the microprocessor page size (this computes the top addr)
// and the bottom is computed by subtracting RLIMIT_STACK rlim_cur
// It's simple but gets tricky if we consider environ can be empty
//
// This code always guesses correctly on Windows because WinMain()
// is written to allocate a stack ourself. Local testing on Linux,
// XNU, FreeBSD, OpenBSD, and NetBSD says that accuracy is ±1 page
// and that error rate applies to both beginning and end addresses
static char *__get_last(char **list) {
char *res = 0;