x86: x86-64: add arch_float_en-/dis-able() functions (d33017b4) · Commits · Wenxi XU / zephyr

This adds arch_float_enable() and arch_float_disable() to x86-64. As x86-64 always has FP/SSE enabled, these operations are basically no-ops. These are added just for the completeness of arch interface. Fixes #38022 Signed-off-by:

Daniel Leung <daniel.leung@intel.com>

arch/x86/core/intel64/thread.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -61,3 +61,15 @@ void arch_new_thread(struct k_thread thread, k_thread_stack_t stack,
		thread->arch.flags = X86_THREAD_FLAG_ALL;
		thread->switch_handle = thread;
		}

		int arch_float_disable(struct k_thread *thread)
		{
		/* x86-64 always has FP/SSE enabled so cannot be disabled */
		return -ENOTSUP;
		}

		int arch_float_enable(struct k_thread *thread, unsigned int options)
		{
		/* x86-64 always has FP/SSE enabled so nothing to do here */
		return 0;
		}

Admin message