mirror of
https://github.com/EnderIce2/Fennix.git
synced 2025-07-15 09:19:16 +00:00
.devcontainer
.github
.vscode
Bootloader
Drivers
Kernel
.vscode
arch
core
driver
memory
panic
time
video
acpi.cpp
console.cpp
cpu.cpp
debugger.cpp
disk.cpp
dsdt.cpp
interrupts_manager.cpp
lock.cpp
pci.cpp
power.cpp
random.cpp
smbios.cpp
smbios.hpp
stack_check.cpp
symbols.cpp
syscalls.cpp
ubsan.c
ubsan.h
drivers
exec
files
include
include_std
kshell
library
network
profiling
storage
subsystem
syscalls
tasking
tests
tty
virtualization
.editorconfig
.gdbinit
.gitignore
ISSUES.md
Makefile
README.md
TODO.md
dump.sh
kernel.cpp
kernel.h
kernel_config.cpp
kernel_thread.cpp
kernel_vfs.cpp
Userspace
initrd
tools
.editorconfig
.gitignore
.gitlab-ci.yml
CHANGELOG.md
CODE_OF_CONDUCT.md
CONTRIBUTING.md
CREDITS.md
Doxyfile
Fennix Bootloader.code-workspace
Fennix Drivers.code-workspace
Fennix Kernel.code-workspace
Fennix Userspace.code-workspace
Fennix Website.code-workspace
Fennix.code-workspace
INSTALL.md
LICENSE.md
LICENSES.md
Makefile
README.md
SECURITY.md
STYLE_GUIDE.md
cliff.toml
config.mk
84 lines
2.0 KiB
C++
84 lines
2.0 KiB
C++
/*
|
|
This file is part of Fennix Kernel.
|
|
|
|
Fennix Kernel is free software: you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation, either version 3 of
|
|
the License, or (at your option) any later version.
|
|
|
|
Fennix Kernel is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <types.h>
|
|
#include <debug.h>
|
|
#include <rand.hpp>
|
|
|
|
#include "../kernel.h"
|
|
|
|
extern __noreturn void HandleStackSmashing();
|
|
extern __noreturn void HandleBufferOverflow();
|
|
|
|
/* EXTERNC */ uintptr_t __stack_chk_guard = 0;
|
|
|
|
EXTERNC __no_stack_protector uintptr_t __stack_chk_guard_init(void)
|
|
{
|
|
int MaxRetries = 0;
|
|
#if UINTPTR_MAX == UINT32_MAX
|
|
uint32_t num;
|
|
Retry:
|
|
num = Random::rand32();
|
|
if (num < 0x1000 && MaxRetries++ < 10)
|
|
goto Retry;
|
|
return num;
|
|
|
|
#else
|
|
uint64_t num;
|
|
Retry:
|
|
num = Random::rand64();
|
|
if (num < 0x100000 && MaxRetries++ < 10)
|
|
goto Retry;
|
|
return num;
|
|
#endif
|
|
}
|
|
|
|
EXTERNC __constructor __no_stack_protector void __guard_setup(void)
|
|
{
|
|
debug("__guard_setup");
|
|
if (__stack_chk_guard == 0)
|
|
__stack_chk_guard = __stack_chk_guard_init();
|
|
debug("Stack guard value: %ld", __stack_chk_guard);
|
|
}
|
|
|
|
EXTERNC __noreturn __no_stack_protector void __stack_chk_fail(void)
|
|
{
|
|
CPU::PageTable(KernelPageTable);
|
|
|
|
void *Stack = nullptr;
|
|
#if defined(__amd64__)
|
|
asmv("movq %%rsp, %0"
|
|
: "=r"(Stack));
|
|
#elif defined(__i386__)
|
|
asmv("movl %%esp, %0"
|
|
: "=r"(Stack));
|
|
#elif defined(__aarch64__)
|
|
#warning "aarch64 not implemented"
|
|
#endif
|
|
error("Stack address: %#lx", Stack);
|
|
|
|
HandleStackSmashing();
|
|
}
|
|
|
|
// https://github.com/gcc-mirror/gcc/blob/master/libssp/ssp.c
|
|
EXTERNC __noreturn nsa void __chk_fail(void)
|
|
{
|
|
CPU::PageTable(KernelPageTable);
|
|
|
|
HandleBufferOverflow();
|
|
}
|