mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
0da47c51de
* [metal] Copy program pages to extended memory at startup * [metal] Reclaim base memory pages for later app use * [metal] Load program pages beyond 1st 440 KiB to extended memory o//examples/hellolua.com now runs correctly under QEMU (in legacy BIOS mode). * [metal] Place GDT in read/write segment The CPU absolutely needs to alter the GDT when loading the task register (via ltr). To account for this, I move the GDT into a read/write data section. There is still a "rump" read-only GDT in the text section that is used by the real mode bootloader. We also delay the loading of the task register (ltr) until after the IDT and TSS are finally set up. * [metal] Get examples/vga2.c serial output working for UEFI boot * [metal] Get examples/vga2.c VGA output working for UEFI boot * [metal] Allow munmap() to reclaim dynamically allocated pages * Place TLS sections right after .text, not after embedded zip file Co-authored-by: tkchia <tkchia-cosmo@gmx.com>
117 lines
3.5 KiB
ArmAsm
117 lines
3.5 KiB
ArmAsm
/*-*- 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. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
|
|
// Traditional executable boundaries defined by linker.
|
|
// @see man etext
|
|
_etext = 0
|
|
_edata = 0
|
|
_end = 0
|
|
|
|
// Cosmopolitan executable boundaries defined by linker script.
|
|
// @see libc/elf/elf.lds
|
|
// @see ape/ape.lds
|
|
_base = 0
|
|
ape_xlm = 0
|
|
_ehead = 0
|
|
_ezip = 0
|
|
_ereal = 0
|
|
__privileged_start = 0
|
|
__privileged_end = 0
|
|
__privileged_addr = 0
|
|
__privileged_size = 0
|
|
__test_start = 0
|
|
__ro = 0
|
|
__relo_start = 0
|
|
__relo_end = 0
|
|
__data_start = 0
|
|
__data_end = 0
|
|
__bss_start = 0
|
|
__bss_end = 0
|
|
|
|
// Thread local boundaries defined by linker script
|
|
// @see ape/ape.lds
|
|
_tdata_start = 0
|
|
_tdata_end = 0
|
|
_tdata_size = 0
|
|
_tbss_start = 0
|
|
_tbss_end = 0
|
|
_tbss_offset = 0
|
|
_tbss_size = 0
|
|
_tls_size = 0
|
|
_tls_content = 0
|
|
|
|
.globl _base
|
|
.globl ape_xlm
|
|
.globl __relo_start
|
|
.globl __relo_end
|
|
.globl __privileged_size
|
|
.globl __privileged_addr
|
|
.globl __privileged_start
|
|
.globl __privileged_end
|
|
.globl __ro
|
|
.globl __test_start
|
|
.globl _edata
|
|
.globl _ehead
|
|
.globl _end
|
|
.globl _ezip
|
|
.globl _ereal
|
|
.globl _etext
|
|
.globl _tdata_start
|
|
.globl _tdata_end
|
|
.globl _tdata_size
|
|
.globl _tbss_start
|
|
.globl _tbss_end
|
|
.globl _tbss_size
|
|
.globl _tbss_offset
|
|
.globl _tls_size
|
|
.globl _tls_content
|
|
.globl __data_start
|
|
.globl __data_end
|
|
.globl __bss_start
|
|
.globl __bss_end
|
|
|
|
.weak _base
|
|
.weak ape_xlm
|
|
.weak __relo_start
|
|
.weak __relo_end
|
|
.weak __privileged_size
|
|
.weak __privileged_addr
|
|
.weak __privileged_start
|
|
.weak __privileged_end
|
|
.weak __ro
|
|
.weak __test_start
|
|
.weak _edata
|
|
.weak _ehead
|
|
.weak _end
|
|
.weak _ezip
|
|
.weak _ereal
|
|
.weak _etext
|
|
.weak _tdata_start
|
|
.weak _tdata_end
|
|
.weak _tdata_size
|
|
.weak _tbss_start
|
|
.weak _tbss_end
|
|
.weak _tbss_size
|
|
.weak _tls_size
|
|
.weak _tls_content
|
|
.weak _tbss_offset
|
|
.weak __data_start
|
|
.weak __data_end
|
|
.weak __bss_start
|
|
.weak __bss_end
|