Fennix/Kernel
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Update kernel

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This commit is contained in:
EnderIce2
2024-01-19 06:47:42 +02:00
parent fd15592608
commit 96daa43d38
282 changed files with 25486 additions and 15700 deletions
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78
core/stack_check.cpp
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@ -25,82 +25,82 @@
EXTERNC __weak __no_stack_protector uintptr_t __stack_chk_guard_init(void)
{
int MaxRetries = 0;
int MaxRetries = 0;
#if UINTPTR_MAX == UINT32_MAX
uint32_t num;
uint32_t num;
Retry:
num = Random::rand32();
if (num < 0x1000 && MaxRetries++ < 10)
goto Retry;
return num;
num = Random::rand32();
if (num < 0x1000 && MaxRetries++ < 10)
goto Retry;
return num;
#else
uint64_t num;
uint64_t num;
Retry:
num = Random::rand64();
if (num < 0x100000 && MaxRetries++ < 10)
goto Retry;
return num;
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);
debug("__guard_setup");
if (__stack_chk_guard == 0)
__stack_chk_guard = __stack_chk_guard_init();
debug("Stack guard value: %ld", __stack_chk_guard);
}
EXTERNC __weak __noreturn __no_stack_protector void __stack_chk_fail(void)
{
TaskingPanic();
for (short i = 0; i < 10; i++)
error("Stack smashing detected!");
debug("Current stack check guard value: %#lx", __stack_chk_guard);
KPrint("\eFF0000Stack smashing detected!");
TaskingPanic();
for (short i = 0; i < 10; i++)
error("Stack smashing detected!");
debug("Current stack check guard value: %#lx", __stack_chk_guard);
KPrint("\eFF0000Stack smashing detected!");
void *Stack = nullptr;
void *Stack = nullptr;
#if defined(a86)
#if defined(a64)
asmv("movq %%rsp, %0"
: "=r"(Stack));
asmv("movq %%rsp, %0"
: "=r"(Stack));
#elif defined(a32)
asmv("movl %%esp, %0"
: "=r"(Stack));
asmv("movl %%esp, %0"
: "=r"(Stack));
#endif
#elif defined(aa64)
asmv("mov %%sp, %0"
: "=r"(Stack));
asmv("mov %%sp, %0"
: "=r"(Stack));
#endif
error("Stack address: %#lx", Stack);
error("Stack address: %#lx", Stack);
if (DebuggerIsAttached)
if (DebuggerIsAttached)
#ifdef a86
asmv("int $0x3");
asmv("int $0x3");
#elif defined(aa64)
asmv("brk #0");
asmv("brk #0");
#endif
CPU::Stop();
CPU::Stop();
}
// https://github.com/gcc-mirror/gcc/blob/master/libssp/ssp.c
EXTERNC __weak __noreturn __no_stack_protector void __chk_fail(void)
{
TaskingPanic();
for (short i = 0; i < 10; i++)
error("Buffer overflow detected!");
KPrint("\eFF0000Buffer overflow detected!");
TaskingPanic();
for (short i = 0; i < 10; i++)
error("Buffer overflow detected!");
KPrint("\eFF0000Buffer overflow detected!");
#if defined(a86)
while (1)
asmv("cli; hlt");
while (1)
asmv("cli; hlt");
#elif defined(aa64)
asmv("wfe");
asmv("wfe");
#endif
}