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core: hle: kernel: KThread: X18 should be a cryptographically random number.

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- This was added with firmware 11.0.0 (https://switchbrew.org/wiki/11.0.0).
    - X18 is OR'd by kernel with 1, to make sure it is odd.
This commit is contained in:
bunnei 2021-12-23 00:03:39 -08:00
parent b85f5b1332
commit a0c7d93b84
1 changed files with 2 additions and 0 deletions
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2
src/core/hle/kernel/k_thread.cpp
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@ -26,6 +26,7 @@
#include "core/hle/kernel/k_resource_limit.h" #include "core/hle/kernel/k_resource_limit.h"
#include "core/hle/kernel/k_scheduler.h" #include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h" #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
#include "core/hle/kernel/k_system_control.h"
#include "core/hle/kernel/k_thread.h" #include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/k_thread_queue.h" #include "core/hle/kernel/k_thread_queue.h"
#include "core/hle/kernel/kernel.h" #include "core/hle/kernel/kernel.h"
@ -50,6 +51,7 @@ static void ResetThreadContext64(Core::ARM_Interface::ThreadContext64& context,
VAddr entry_point, u64 arg) { VAddr entry_point, u64 arg) {
context = {}; context = {};
context.cpu_registers[0] = arg; context.cpu_registers[0] = arg;
context.cpu_registers[18] = Kernel::KSystemControl::GenerateRandomU64() | 1;
context.pc = entry_point; context.pc = entry_point;
context.sp = stack_top; context.sp = stack_top;
// TODO(merry): Perform a hardware test to determine the below value. // TODO(merry): Perform a hardware test to determine the below value.