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https://github.com/Fennix-Project/Kernel.git
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Architecture
Core
Crash
Driver
Memory
Time
Video
CPU.cpp
Debugger.cpp
Disk.cpp
InterruptsManager.cpp
Lock.cpp
PeripheralComponentInterconnect.cpp
Power.cpp
README.md
Random.cpp
StackCheck.cpp
Symbols.cpp
SystemManagementBIOS.cpp
UndefinedBehaviorSanitization.c
UniversalAsynchronousReceiverTransmitter.cpp
crashhandler.hpp
smbios.hpp
ubsan.h
Execute
FileSystem
Files
GUI
Library
Network
Profiling
Recovery
SystemCalls
Tasking
Tests
include
include_std
.gitignore
DAPI.hpp
Doxyfile
Fex.hpp
Kernel.cpp
KernelConfig.cpp
KernelThread.cpp
LICENSE
Makefile
README.md
dump.sh
ipc.h
kernel.h
syscalls.h
97 lines
2.4 KiB
C++
97 lines
2.4 KiB
C++
/*
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This file is part of Fennix Kernel.
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Fennix Kernel is free software: you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation, either version 3 of
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the License, or (at your option) any later version.
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Fennix Kernel is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <types.h>
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#include <debug.h>
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#include <rand.hpp>
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#include "../kernel.h"
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/* EXTERNC */ __weak uintptr_t __stack_chk_guard = 0;
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EXTERNC __weak __no_stack_protector uintptr_t __stack_chk_guard_init(void)
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{
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int MaxRetries = 0;
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#if UINTPTR_MAX == UINT32_MAX
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uint32_t num;
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Retry:
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num = Random::rand32();
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if (num < 0x1000 && MaxRetries++ < 10)
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goto Retry;
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return num;
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#else
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uint64_t num;
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Retry:
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num = Random::rand64();
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if (num < 0x100000 && MaxRetries++ < 10)
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goto Retry;
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return num;
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#endif
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}
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EXTERNC __constructor __no_stack_protector void __guard_setup(void)
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{
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debug("__guard_setup");
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if (__stack_chk_guard == 0)
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__stack_chk_guard = __stack_chk_guard_init();
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debug("Stack guard value: %ld", __stack_chk_guard);
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}
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EXTERNC __weak __noreturn __no_stack_protector void __stack_chk_fail(void)
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{
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TaskingPanic();
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for (short i = 0; i < 10; i++)
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error("Stack smashing detected!");
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debug("Current stack check guard value: %#lx", __stack_chk_guard);
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KPrint("\eFF0000Stack smashing detected!");
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#if defined(a86)
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void *Stack = nullptr;
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#if defined(a64)
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asmv("movq %%rsp, %0"
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: "=r"(Stack));
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#elif defined(a32)
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asmv("movl %%esp, %0"
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: "=r"(Stack));
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#endif
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error("Stack address: %#lx", Stack);
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while (1)
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asmv("cli; hlt");
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#elif defined(aa64)
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asmv("wfe");
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#endif
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CPU::Stop();
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}
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// https://github.com/gcc-mirror/gcc/blob/master/libssp/ssp.c
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EXTERNC __weak __noreturn __no_stack_protector void __chk_fail(void)
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{
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TaskingPanic();
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for (short i = 0; i < 10; i++)
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error("Buffer overflow detected!");
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KPrint("\eFF0000Buffer overflow detected!");
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#if defined(a86)
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while (1)
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asmv("cli; hlt");
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#elif defined(aa64)
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asmv("wfe");
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#endif
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}
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