Lines Matching full:fpu

29 .Nd "facility to use the FPU in the kernel"
47 family of functions allows the use of FPU hardware in kernel code.
51 These facilities share registers with the FPU hardware.
53 Typical kernel code does not need access to the FPU.
56 When kernel code uses the FPU, the current FPU state must be saved to
60 The processor catches accesses to the FPU registers
63 the notification of the start and end of the code using the FPU.
69 to track the use of the FPU hardware state and the related software state.
95 use of the FPU is allowed.
110 Indicates that the caller intends to access the full FPU state.
113 Indicates that no saving of the current FPU state should be performed,
130 It avoids the need to allocate the FPU context by the cost
136 It could cause an FPU trap during execution, and on the first FPU access
146 It is erroneous to use the FPU in the kernel before
167 The current thread will reuse the usermode save area for the kernel FPU state
175 is required to be called and the fpu is available for use in the calling thread.
183 value is true if the current thread have the permanent FPU save area,
200 set of the FPU hardware state used by the code region.