diff options
Diffstat (limited to 'nuttx/arch/arm/src/armv7-m/up_fpu.S')
| -rw-r--r-- | nuttx/arch/arm/src/armv7-m/up_fpu.S | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/nuttx/arch/arm/src/armv7-m/up_fpu.S b/nuttx/arch/arm/src/armv7-m/up_fpu.S deleted file mode 100644 index 707420f06..000000000 --- a/nuttx/arch/arm/src/armv7-m/up_fpu.S +++ /dev/null @@ -1,286 +0,0 @@ -/************************************************************************************ - * arch/arm/src/armv7-m/stm32_fpu.S - * - * Copyright (C) 2011-2012 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <gnutt@nuttx.org> - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * 3. Neither the name NuttX nor the names of its contributors may be - * used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN - * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - ************************************************************************************/ -/* - * When this file is assembled, it will require the following GCC options: - * - * -mcpu=cortex-m3 -mfloat-abi=hard -mfpu=vfp -meabi=5 - */ - -/************************************************************************************ - * Included Files - ************************************************************************************/ - -#include <nuttx/config.h> - -#include <arch/irq.h> - -#ifdef CONFIG_ARCH_FPU - -/************************************************************************************ - * Preprocessor Definitions - ************************************************************************************/ - -/************************************************************************************ - * Global Symbols - ************************************************************************************/ - - .globl up_savefpu - .globl up_restorefpu - - .syntax unified - .thumb - .file "up_fpu.S" - -/************************************************************************************ - * Public Functions - ************************************************************************************/ - -/************************************************************************************ - * Name: up_savefpu - * - * Description: - * Given the pointer to a register save area (in R0), save the state of the - * floating point registers. - * - * C Function Prototype: - * void up_savefpu(uint32_t *regs); - * - * Input Parameters: - * regs - A pointer to the register save area in which to save the floating point - * registers - * - * Returned Value: - * None - * - ************************************************************************************/ - - .thumb_func - .type up_savefpu, function -up_savefpu: - - add r1, r0, #(4*REG_S0) /* R1=Address of FP register storage */ - - /* Some older GNU assemblers don't support all the newer UAL mnemonics. */ - -#if 1 /* Use UAL mnemonics */ - /* Store all floating point registers. Registers are stored in numeric order, - * s0, s1, ... in increasing address order. - */ - - vstmia r1!, {s0-s31} /* Save the full FP context */ - - /* Store the floating point control and status register. At the end of the - * vstmia, r1 will point to the FPCSR storage location. - */ - - vmrs r2, fpscr /* Fetch the FPCSR */ - str r2, [r1], #4 /* Save the floating point control and status register */ -#else - /* Store all floating point registers */ - -#if 1 /* Use store multiple */ - fstmias r1!, {s0-s31} /* Save the full FP context */ -#else - vmov r2, r3, d0 /* r2, r3 = d0 */ - str r2, [r1], #4 /* Save S0 and S1 values */ - str r3, [r1], #4 - vmov r2, r3, d1 /* r2, r3 = d1 */ - str r2, [r1], #4 /* Save S2 and S3 values */ - str r3, [r1], #4 - vmov r2, r3, d2 /* r2, r3 = d2 */ - str r2, [r1], #4 /* Save S4 and S5 values */ - str r3, [r1], #4 - vmov r2, r3, d3 /* r2, r3 = d3 */ - str r2, [r1], #4 /* Save S6 and S7 values */ - str r3, [r1], #4 - vmov r2, r3, d4 /* r2, r3 = d4 */ - str r2, [r1], #4 /* Save S8 and S9 values */ - str r3, [r1], #4 - vmov r2, r3, d5 /* r2, r3 = d5 */ - str r2, [r1], #4 /* Save S10 and S11 values */ - str r3, [r1], #4 - vmov r2, r3, d6 /* r2, r3 = d6 */ - str r2, [r1], #4 /* Save S12 and S13 values */ - str r3, [r1], #4 - vmov r2, r3, d7 /* r2, r3 = d7 */ - str r2, [r1], #4 /* Save S14 and S15 values */ - str r3, [r1], #4 - vmov r2, r3, d8 /* r2, r3 = d8 */ - str r2, [r1], #4 /* Save S16 and S17 values */ - str r3, [r1], #4 - vmov r2, r3, d9 /* r2, r3 = d9 */ - str r2, [r1], #4 /* Save S18 and S19 values */ - str r3, [r1], #4 - vmov r2, r3, d10 /* r2, r3 = d10 */ - str r2, [r1], #4 /* Save S20 and S21 values */ - str r3, [r1], #4 - vmov r2, r3, d11 /* r2, r3 = d11 */ - str r2, [r1], #4 /* Save S22 and S23 values */ - str r3, [r1], #4 - vmov r2, r3, d12 /* r2, r3 = d12 */ - str r2, [r1], #4 /* Save S24 and S25 values */ - str r3, [r1], #4 - vmov r2, r3, d13 /* r2, r3 = d13 */ - str r2, [r1], #4 /* Save S26 and S27 values */ - str r3, [r1], #4 - vmov r2, r3, d14 /* r2, r3 = d14 */ - str r2, [r1], #4 /* Save S28 and S29 values */ - str r3, [r1], #4 - vmov r2, r3, d15 /* r2, r3 = d15 */ - str r2, [r1], #4 /* Save S30 and S31 values */ - str r3, [r1], #4 -#endif - - /* Store the floating point control and status register */ - - fmrx r2, fpscr /* Fetch the FPCSR */ - str r2, [r1], #4 /* Save the floating point control and status register */ -#endif - bx lr - - .size up_savefpu, .-up_savefpu - -/************************************************************************************ - * Name: up_restorefpu - * - * Description: - * Given the pointer to a register save area (in R0), restore the state of the - * floating point registers. - * - * C Function Prototype: - * void up_restorefpu(const uint32_t *regs); - * - * Input Parameters: - * regs - A pointer to the register save area containing the floating point - * registers. - * - * Returned Value: - * This function does not return anything explicitly. However, it is called from - * interrupt level assembly logic that assumes that r0 is preserved. - * - ************************************************************************************/ - - .thumb_func - .type up_restorefpu, function -up_restorefpu: - - add r1, r0, #(4*REG_S0) /* R1=Address of FP register storage */ - - /* Some older GNU assemblers don't support all the newer UAL mnemonics. */ - -#if 1 /* Use UAL mnemonics */ - /* Load all floating point registers. Registers are loaded in numeric order, - * s0, s1, ... in increasing address order. - */ - - vldmia r1!, {s0-s31} /* Restore the full FP context */ - - /* Load the floating point control and status register. At the end of the - * vstmia, r1 will point to the FPCSR storage location. - */ - - ldr r2, [r1], #4 /* Fetch the floating point control and status register */ - vmsr fpscr, r2 /* Restore the FPCSR */ -#else - /* Load all floating point registers Registers are loaded in numeric order, - * s0, s1, ... in increasing address order. - */ - -#if 1 /* Use load multiple */ - fldmias r1!, {s0-s31} /* Restore the full FP context */ -#else - ldr r2, [r1], #4 /* Fetch S0 and S1 values */ - ldr r3, [r1], #4 - vmov d0, r2, r3 /* Save as d0 */ - ldr r2, [r1], #4 /* Fetch S2 and S3 values */ - ldr r3, [r1], #4 - vmov d1, r2, r3 /* Save as d1 */ - ldr r2, [r1], #4 /* Fetch S4 and S5 values */ - ldr r3, [r1], #4 - vmov d2, r2, r3 /* Save as d2 */ - ldr r2, [r1], #4 /* Fetch S6 and S7 values */ - ldr r3, [r1], #4 - vmov d3, r2, r3 /* Save as d3 */ - ldr r2, [r1], #4 /* Fetch S8 and S9 values */ - ldr r3, [r1], #4 - vmov d4, r2, r3 /* Save as d4 */ - ldr r2, [r1], #4 /* Fetch S10 and S11 values */ - ldr r3, [r1], #4 - vmov d5, r2, r3 /* Save as d5 */ - ldr r2, [r1], #4 /* Fetch S12 and S13 values */ - ldr r3, [r1], #4 - vmov d6, r2, r3 /* Save as d6 */ - ldr r2, [r1], #4 /* Fetch S14 and S15 values */ - ldr r3, [r1], #4 - vmov d7, r2, r3 /* Save as d7 */ - ldr r2, [r1], #4 /* Fetch S16 and S17 values */ - ldr r3, [r1], #4 - vmov d8, r2, r3 /* Save as d8 */ - ldr r2, [r1], #4 /* Fetch S18 and S19 values */ - ldr r3, [r1], #4 - vmov d9, r2, r3 /* Save as d9 */ - ldr r2, [r1], #4 /* Fetch S20 and S21 values */ - ldr r3, [r1], #4 - vmov d10, r2, r3 /* Save as d10 */ - ldr r2, [r1], #4 /* Fetch S22 and S23 values */ - ldr r3, [r1], #4 - vmov d11, r2, r3 /* Save as d11 */ - ldr r2, [r1], #4 /* Fetch S24 and S25 values */ - ldr r3, [r1], #4 - vmov d12, r2, r3 /* Save as d12 */ - ldr r2, [r1], #4 /* Fetch S26 and S27 values */ - ldr r3, [r1], #4 - vmov d13, r2, r3 /* Save as d13 */ - ldr r2, [r1], #4 /* Fetch S28 and S29 values */ - ldr r3, [r1], #4 - vmov d14, r2, r3 /* Save as d14 */ - ldr r2, [r1], #4 /* Fetch S30 and S31 values */ - ldr r3, [r1], #4 - vmov d15, r2, r3 /* Save as d15 */ -#endif - - /* Load the floating point control and status register. r1 points t - * the address of the FPCSR register. - */ - - ldr r2, [r1], #4 /* Fetch the floating point control and status register */ - fmxr fpscr, r2 /* Restore the FPCSR */ -#endif - bx lr - - .size up_restorefpu, .-up_restorefpu -#endif /* CONFIG_ARCH_FPU */ - .end - |