mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-06-27 14:58:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Add syscalls to Blinkenlights and fix bugs

Browse source
This commit is contained in:
Justine Tunney 2022-05-13 13:31:21 -07:00
parent f6df29cc3d
commit 578cb21591
25 changed files with 187 additions and 108 deletions
Download patch file Download diff file Expand all files Collapse all files

11
tool/build/lib/loader.c
View file

@ -25,6 +25,7 @@
#include "libc/log/log.h"
#include "libc/macros.internal.h"
#include "libc/nexgen32e/vendor.internal.h"
#include "libc/runtime/pc.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/sysv/consts/fileno.h"
@ -65,9 +66,12 @@ static void LoadElfLoadSegment(struct Machine *m, void *code, size_t codesize,
CHECK_GE(vend - vstart, fstart - fend);
CHECK_LE(phdr->p_filesz, phdr->p_memsz);
CHECK_EQ(felf + phdr->p_offset - fstart, phdr->p_vaddr - vstart);
CHECK_NE(-1, ReserveVirtual(m, vstart, fend - fstart, 0x0207));
CHECK_NE(-1, ReserveVirtual(m, vstart, fend - fstart,
PAGE_V | PAGE_RW | PAGE_U | PAGE_RSRV));
VirtualRecv(m, vstart, (void *)fstart, fend - fstart);
if (bsssize) CHECK_NE(-1, ReserveVirtual(m, vbss, bsssize, 0x0207));
if (bsssize)
CHECK_NE(-1, ReserveVirtual(m, vbss, bsssize,
PAGE_V | PAGE_RW | PAGE_U | PAGE_RSRV));
if (phdr->p_memsz - phdr->p_filesz > bsssize) {
VirtualSet(m, phdr->p_vaddr + phdr->p_filesz, 0,
phdr->p_memsz - phdr->p_filesz - bsssize);
@ -158,7 +162,8 @@ void LoadProgram(struct Machine *m, const char *prog, char **args, char **vars,
sp = 0x800000000000;
Write64(m->sp, sp);
m->cr3 = AllocateLinearPage(m);
CHECK_NE(-1, ReserveVirtual(m, sp - STACKSIZE, STACKSIZE, 0x0207));
CHECK_NE(-1, ReserveVirtual(m, sp - STACKSIZE, STACKSIZE,
PAGE_V | PAGE_RW | PAGE_U | PAGE_RSRV));
LoadArgv(m, prog, args, vars);
if (memcmp(elf->map, "\177ELF", 4) == 0) {
elf->ehdr = (void *)elf->map;