mirror of
https://github.com/EnderIce2/Fennix.git
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Architecture
Core
Crash
Driver
Interrupts
Memory
Video
CPU.cpp
Debugger.cpp
Disk.cpp
Lock.cpp
PeripheralComponentInterconnect.cpp
Power.cpp
README.md
Random.cpp
StackGuard.cpp
Symbols.cpp
SystemManagementBIOS.cpp
Time.cpp
Timer.cpp
UndefinedBehaviorSanitization.c
UniversalAsynchronousReceiverTransmitter.cpp
crashhandler.hpp
smbios.hpp
ubsan.h
Execute
FileSystem
Files
GUI
Library
Network
Profiling
Recovery
SystemCalls
Tasking
Tests
include
.gitignore
DAPI.hpp
Doxyfile
Fex.hpp
KConfig.cpp
KThread.cpp
Kernel.cpp
LICENSE
Makefile
README.md
dump.sh
ipc.h
kernel.h
syscalls.h
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
#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 */ __attribute__((weak)) uintptr_t __stack_chk_guard = 0;
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EXTERNC __attribute__((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 __attribute__((constructor, no_stack_protector)) void __guard_setup(void)
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{
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debug("StackGuard: __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 __attribute__((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(__amd64__) || defined(__i386__)
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while (1)
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asmv("cli; hlt");
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#elif defined(__aarch64__)
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asmv("wfe");
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#endif
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}
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// https://github.com/gcc-mirror/gcc/blob/master/libssp/ssp.c
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EXTERNC __attribute__((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(__amd64__) || defined(__i386__)
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while (1)
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asmv("cli; hlt");
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#elif defined(__aarch64__)
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asmv("wfe");
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#endif
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}
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