13 /* to be found in fpu.S */
23  * using a va_list as va_start() may copy the FPU registers that could be
24  * used to pass float arguments, and that would trigger an FPU access trap.
82 		 "must be called with FPU access disabled");  in z_riscv_fpu_load()
94  * Flush FPU content and clear ownership. If the saved FPU state is "clean"
95  * then we know the in-memory copy is up to date and skip the FPU content
96  * transfer. The saved FPU state is updated upon disabling FPU access so
97  * we require that this be called only when the FPU is disabled.
106 		 "must be called with FPU access disabled");  in arch_flush_local_fpu()
114 			/* turn on FPU access */  in arch_flush_local_fpu()
123 		/* disable FPU access */  in arch_flush_local_fpu()
155 		/* the FPU context is live on another CPU */  in flush_owned_fpu()
169 		 * two CPUs want to pull each other's FPU context.  in flush_owned_fpu()
186 	/* always deny FPU access whenever an exception is entered */  in z_riscv_fpu_enter_exc()
191  * Process the FPU trap.
197  * is always disabled by default in that case. If so we save the FPU content
198  * to the owning thread and simply enable FPU access. Exceptions should be
211 		 "called despite FPU being accessible");  in z_riscv_fpu_trap()
218 		 * We were already in exception when the FPU access trapped.  in z_riscv_fpu_trap()
221 		 * interrupted exception's FPU context.  in z_riscv_fpu_trap()
233 	 * Make sure the FPU context we need isn't live on another CPU.  in z_riscv_fpu_trap()
234 	 * The current CPU's FPU context is NULL at this point.  in z_riscv_fpu_trap()
247  * Perform lazy FPU context switching by simply granting or denying
248  * access to FP regs based on FPU ownership before leaving the last
252  * first access and then the actual FPU context switching will occur.
268 			 * it made active use of the FPU, but someone else  in fpu_access_allowed()
285 	 * Any new exception level should always trap on FPU  in fpu_access_allowed()
307  * This is called from z_riscv_context_switch(). FPU access may be granted
309  * some exception context then FPU access would be re-evaluated at exception