| /linux/arch/sparc/kernel/ |
| A D | cpu.c | 82 FPU(-1, NULL)
103 FPU(-1, NULL)
114 FPU(-1, NULL)
123 FPU(-1, NULL)
142 FPU(-1, NULL)
152 FPU(-1, NULL)
161 FPU(-1, NULL)
170 FPU(-1, NULL)
179 FPU(-1, NULL)
193 FPU(-1, NULL)
[all …]
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| /linux/arch/x86/math-emu/ |
| A D | README | 2 | wm-FPU-emu an FPU emulator for 80386 and 80486SX microprocessors. |
25 wm-FPU-emu is an FPU emulator for Linux. It is derived from wm-emu387
31 My target FPU for wm-FPU-emu is that described in the Intel486
33 facets of the functioning of the FPU are not well covered in the
40 wm-FPU-emu does not implement all of the behaviour of the 80486 FPU,
82 emulate each FPU instruction to completion without interruption.
101 There are a number of differences between the current wm-FPU-emu
167 affected by the FPU instruction trap overhead.
203 wm-FPU-emu w original w
229 than that of an Intel 80486 FPU.
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| /linux/arch/sh/ |
| A D | Kconfig.cpu | 21 prompt "FPU support"
25 have FPU units (ie, SH77xx).
27 This option must be set in order to enable the FPU.
31 prompt "FPU emulation support"
34 Selecting this option will enable support for software FPU emulation.
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| /linux/Documentation/locking/ |
| A D | preempt-locking.rst | 46 switch. For example, on x86, entering and exiting FPU mode is now a critical
49 Remember, the kernel does not save FPU state except for user tasks. Therefore,
50 upon preemption, the FPU registers will be sold to the lowest bidder. Thus,
53 Note, some FPU functions are already explicitly preempt safe. For example,
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| /linux/arch/m68k/ |
| A D | Kconfig.cpu | 61 select FPU
72 select FPU
82 select FPU
93 select FPU
272 select FPU if MMU
283 select FPU if MMU
328 depends on M68KCLASSIC && FPU
455 config FPU config
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| /linux/arch/m68k/ifpsp060/ |
| A D | fskeleton.S | 208 | the FPU is disabled, and F-Line Illegal instructions. The 060FPSP module
219 | This is the exit point for the 060FPSP when an FPU disabled exception is
222 | the FPU is disabled, and F-Line Illegal instructions. The 060FPSP module
223 | _fpsp_fline() distinguishes between the three and acts appropriately. FPU disabled
226 | The sample code below enables the FPU, sets the PC field in the exception stack
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| /linux/Documentation/translations/zh_CN/kernel-hacking/ |
| A D | hacking.rst | 116 FPU上下文不会被保存；即使在用户上下文中，FPU状态也可能与当前进程不一致：
117 您会弄乱某些用户进程的FPU状态。如果真的要这样做，就必须显式地保存/恢复
118 完整的FPU状态（并避免上下文切换）。这通常不是个好主意；请优先用定点算法。
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| /linux/Documentation/arch/arm/stm32/ |
| A D | stm32f429-overview.rst | 11 - ARM Cortex-M4 up to 180MHz with FPU
|
| /linux/tools/testing/selftests/powerpc/math/ |
| A D | fpu_asm.S | 132 # On starting will (atomically) decrement not_ready as a signal that the FPU
133 # has been loaded with darray. Will proceed to check the validity of the FPU
|
| /linux/arch/x86/kernel/ |
| A D | head_32.S | 188 andl $~1,%edx # Ignore CPUID.FPU
189 jz .Lenable_paging # No flags or only CPUID.FPU = no CR4
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| /linux/arch/mips/include/asm/fw/arc/ |
| A D | hinv.h | 32 FPU, enumerator
|
| /linux/Documentation/translations/zh_CN/arch/parisc/ |
| A D | registers.rst | 28 CR10 (CCR) FPU延迟保存*
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| /linux/Documentation/translations/zh_TW/arch/parisc/ |
| A D | registers.rst | 28 CR10 (CCR) FPU延遲保存*
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| /linux/arch/mips/dec/ |
| A D | int-handler.S | 144 bnez t2,fpu # handle FPU immediately
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| /linux/arch/openrisc/ |
| A D | Kconfig | 191 config FPU config
192 bool "FPU support"
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| /linux/arch/powerpc/platforms/ |
| A D | Kconfig.cputype | 302 bool "Support for Floating Point Unit (FPU)" if PPC_MPC832x
307 Most 6xx have an FPU but e300c2 core (mpc832x) don't have
308 an FPU, so when building an embedded kernel for that target
309 you can disable FPU support.
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| /linux/Documentation/core-api/ |
| A D | floating-point.rst | 24 both with and without a floating-point unit, FPU availability must be checked
|
| /linux/arch/arc/ |
| A D | Kconfig | 328 bool "Enable FPU state persistence across context switch"
330 ARCompact FPU has internal registers to assist with Double precision
371 bool "Reg Pair ACCL:ACCH (FPU and/or MPY > 6 and/or DSP)"
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| /linux/arch/m68k/fpsp040/ |
| A D | fpsp.h | 28 | | FPU fsave area |
60 | if the FPU state after the exception is idle.
|
| /linux/arch/m68k/ifpsp060/src/ |
| A D | pfpsp.S | 960 # The `060 FPU multiplier hardware is such that if the result of a
1380 # restore exc state (SNAN||OPERR||OVFL||UNFL||DZ||INEX) into the FPU;
1958 # restore exc state (SNAN||OPERR||OVFL||UNFL||DZ||INEX) into the FPU;
2393 # If FPU disabled: #
2394 # - The system stack is changed to an FPU disabled stack frame #
2415 # FPU before exiting. In either the enabled or disabled cases, we #
2459 btst &0x1,%d0 # is FPU disabled?
2943 # The FPU is disabled and so we should really have taken the "Line
3830 # can occur because then FPU is disabled or the instruction is to be #
3839 # check to see if the FPU is disabled. if so, jump to the OS entry
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| /linux/Documentation/arch/parisc/ |
| A D | registers.rst | 18 CR10 (CCR) lazy FPU saving*
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| /linux/arch/nios2/ |
| A D | Kconfig | 43 config FPU config
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| /linux/drivers/zorro/ |
| A D | zorro.ids | 127 1000 DKM 1202 [FPU and RAM Expansion]
353 0100 A1200 [FPU and RAM Expansion]
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| /linux/arch/csky/ |
| A D | Kconfig | 307 bool "CPU has FPU coprocessor"
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| /linux/Documentation/arch/powerpc/ |
| A D | elf_hwcaps.rst | 42 FPU, VMX, VSX, it is not necessary to test those HWCAPs, and it may be
|