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meso: properly initialize per-thread CFI-value for 11.x

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This commit is contained in:
Michael Scire 2020-12-08 16:16:49 -08:00
parent 3355f97275
commit 98c80d487b
1 changed files with 6 additions and 1 deletions
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7
libmesosphere/source/arch/arm64/kern_k_thread_context.cpp
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@ -51,7 +51,7 @@ namespace ams::kern::arch::arm64 {
cpu::InstructionMemoryBarrier();
}
uintptr_t SetupStackForUserModeThreadStarter(KVirtualAddress pc, KVirtualAddress k_sp, KVirtualAddress u_sp, uintptr_t arg, bool is_64_bit) {
uintptr_t SetupStackForUserModeThreadStarter(KVirtualAddress pc, KVirtualAddress k_sp, KVirtualAddress u_sp, uintptr_t arg, const bool is_64_bit) {
/* NOTE: Stack layout on entry looks like following: */
/* SP */
/* | */
@ -76,6 +76,11 @@ namespace ams::kern::arch::arm64 {
MESOSPHERE_LOG("Creating User 32-Thread, %016lx\n", GetInteger(pc));
}
/* Set CFI-value. */
if (is_64_bit) {
ctx->x[18] = KSystemControl::GenerateRandomU64() | 1;
}
/* Set stack pointer. */
if (is_64_bit) {
ctx->sp = GetInteger(u_sp);