mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-07-07 03:38:31 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Make examples folder somewhat more focused

Browse source
This commit is contained in:
Justine Tunney 2021-03-05 06:09:12 -08:00
parent 5141d00992
commit e26bdbec52
29 changed files with 133 additions and 1225 deletions
Download patch file Download diff file Expand all files Collapse all files

13
libc/nexgen32e/errno.c
View file

@ -16,9 +16,7 @@
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/nexgen32e/nexgen32e.h"
STATIC_YOINK("__errno_location"); /* needed by gdb */
#include "libc/errno.h"
/**
* Global variable for last error.
@ -33,3 +31,12 @@ STATIC_YOINK("__errno_location"); /* needed by gdb */
* @see __errno_location() stable abi
*/
int errno;
/**
* Returns address of errno.
*
* @note this is needed by gdb
*/
int *__errno_location(void) {
return &errno;
}

28
libc/nexgen32e/errnolocation.S
View file

@ -1,28 +0,0 @@
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/macros.internal.h"
.source __FILE__
.keep.text # gdb needs it
// Returns address of errno variable.
// @note this isn't a universal definition
__errno_location:
ezlea errno,ax
ret
.endfn __errno_location,globl,hidden

4
libc/nexgen32e/nexgen32e.mk
View file

@ -47,6 +47,10 @@ o/$(MODE)/libc/nexgen32e/tinystrncmp.ncabi.o: \
OVERRIDE_CFLAGS += \
-Os
o/$(MODE)/libc/nexgen32e/errno.o: \
OVERRIDE_CFLAGS += \
$(NO_MAGIC)
LIBC_NEXGEN32E_LIBS = $(foreach x,$(LIBC_NEXGEN32E_ARTIFACTS),$($(x)))
LIBC_NEXGEN32E_SRCS = $(foreach x,$(LIBC_NEXGEN32E_ARTIFACTS),$($(x)_SRCS))
LIBC_NEXGEN32E_HDRS = $(foreach x,$(LIBC_NEXGEN32E_ARTIFACTS),$($(x)_HDRS))

40
libc/nexgen32e/vcls.S
View file

@ -1,40 +0,0 @@
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "ape/macros.internal.h"
#include "libc/nexgen32e/vidya.internal.h"
#include "libc/notice.inc"
.real
.code16 # ∩ .code32 ∩ .code64
.source __FILE__
// Clears display page.
//
// @param es:di arbitrary address within video page
// @return es:ax starting address
// @mode long,legacy,real
vcls: xchg %di,%ax
bband VIDYA_REWIND,%ah,%al
xchg %di,%ax
push %di
bbmov VIDYA_SIZE,%cx,%ch,%cl
xor %al,%al
rep stosb
pop %ax
ret
.endfn vcls,globl

3
libc/stdio/system.c
View file

@ -53,8 +53,7 @@ int system(const char *cmdline) {
sigemptyset(&chldmask);
sigaddset(&chldmask, SIGCHLD);
sigprocmask(SIG_BLOCK, &chldmask, &savemask);
pid = fork();
if (!pid) {
if (!(pid = fork())) {
sigaction(SIGINT, &saveint, NULL);
sigaction(SIGQUIT, &savequit, NULL);
sigprocmask(SIG_SETMASK, &savemask, NULL);