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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
279 lines
5.5 KiB
ArmAsm
279 lines
5.5 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* FPU helper code to use FPU operations from inside the kernel
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*
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* Copyright (C) 2010 Alexander Graf (agraf@suse.de)
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*/
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#include <asm/reg.h>
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#include <asm/page.h>
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#include <asm/mmu.h>
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#include <asm/pgtable.h>
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#include <asm/cputable.h>
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#include <asm/cache.h>
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#include <asm/thread_info.h>
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#include <asm/ppc_asm.h>
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#include <asm/asm-offsets.h>
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/* Instructions operating on single parameters */
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/*
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* Single operation with one input operand
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*
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* R3 = (double*)&fpscr
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* R4 = (short*)&result
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* R5 = (short*)¶m1
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*/
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#define FPS_ONE_IN(name) \
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_GLOBAL(fps_ ## name); \
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lfd 0,0(r3); /* load up fpscr value */ \
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MTFSF_L(0); \
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lfs 0,0(r5); \
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\
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name 0,0; \
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\
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stfs 0,0(r4); \
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mffs 0; \
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stfd 0,0(r3); /* save new fpscr value */ \
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blr
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/*
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* Single operation with two input operands
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*
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* R3 = (double*)&fpscr
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* R4 = (short*)&result
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* R5 = (short*)¶m1
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* R6 = (short*)¶m2
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*/
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#define FPS_TWO_IN(name) \
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_GLOBAL(fps_ ## name); \
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lfd 0,0(r3); /* load up fpscr value */ \
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MTFSF_L(0); \
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lfs 0,0(r5); \
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lfs 1,0(r6); \
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\
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name 0,0,1; \
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\
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stfs 0,0(r4); \
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mffs 0; \
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stfd 0,0(r3); /* save new fpscr value */ \
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blr
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/*
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* Single operation with three input operands
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*
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* R3 = (double*)&fpscr
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* R4 = (short*)&result
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* R5 = (short*)¶m1
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* R6 = (short*)¶m2
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* R7 = (short*)¶m3
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*/
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#define FPS_THREE_IN(name) \
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_GLOBAL(fps_ ## name); \
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lfd 0,0(r3); /* load up fpscr value */ \
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MTFSF_L(0); \
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lfs 0,0(r5); \
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lfs 1,0(r6); \
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lfs 2,0(r7); \
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\
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name 0,0,1,2; \
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\
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stfs 0,0(r4); \
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mffs 0; \
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stfd 0,0(r3); /* save new fpscr value */ \
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blr
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FPS_ONE_IN(fres)
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FPS_ONE_IN(frsqrte)
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FPS_ONE_IN(fsqrts)
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FPS_TWO_IN(fadds)
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FPS_TWO_IN(fdivs)
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FPS_TWO_IN(fmuls)
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FPS_TWO_IN(fsubs)
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FPS_THREE_IN(fmadds)
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FPS_THREE_IN(fmsubs)
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FPS_THREE_IN(fnmadds)
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FPS_THREE_IN(fnmsubs)
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FPS_THREE_IN(fsel)
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/* Instructions operating on double parameters */
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/*
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* Beginning of double instruction processing
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*
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* R3 = (double*)&fpscr
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* R4 = (u32*)&cr
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* R5 = (double*)&result
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* R6 = (double*)¶m1
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* R7 = (double*)¶m2 [load_two]
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* R8 = (double*)¶m3 [load_three]
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* LR = instruction call function
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*/
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fpd_load_three:
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lfd 2,0(r8) /* load param3 */
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fpd_load_two:
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lfd 1,0(r7) /* load param2 */
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fpd_load_one:
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lfd 0,0(r6) /* load param1 */
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fpd_load_none:
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lfd 3,0(r3) /* load up fpscr value */
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MTFSF_L(3)
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lwz r6, 0(r4) /* load cr */
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mtcr r6
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blr
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/*
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* End of double instruction processing
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*
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* R3 = (double*)&fpscr
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* R4 = (u32*)&cr
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* R5 = (double*)&result
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* LR = caller of instruction call function
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*/
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fpd_return:
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mfcr r6
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stfd 0,0(r5) /* save result */
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mffs 0
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stfd 0,0(r3) /* save new fpscr value */
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stw r6,0(r4) /* save new cr value */
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blr
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/*
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* Double operation with no input operand
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*
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* R3 = (double*)&fpscr
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* R4 = (u32*)&cr
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* R5 = (double*)&result
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*/
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#define FPD_NONE_IN(name) \
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_GLOBAL(fpd_ ## name); \
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mflr r12; \
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bl fpd_load_none; \
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mtlr r12; \
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\
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name. 0; /* call instruction */ \
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b fpd_return
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/*
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* Double operation with one input operand
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*
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* R3 = (double*)&fpscr
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* R4 = (u32*)&cr
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* R5 = (double*)&result
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* R6 = (double*)¶m1
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*/
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#define FPD_ONE_IN(name) \
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_GLOBAL(fpd_ ## name); \
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mflr r12; \
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bl fpd_load_one; \
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mtlr r12; \
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\
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name. 0,0; /* call instruction */ \
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b fpd_return
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/*
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* Double operation with two input operands
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*
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* R3 = (double*)&fpscr
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* R4 = (u32*)&cr
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* R5 = (double*)&result
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* R6 = (double*)¶m1
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* R7 = (double*)¶m2
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* R8 = (double*)¶m3
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*/
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#define FPD_TWO_IN(name) \
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_GLOBAL(fpd_ ## name); \
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mflr r12; \
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bl fpd_load_two; \
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mtlr r12; \
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\
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name. 0,0,1; /* call instruction */ \
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b fpd_return
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/*
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* CR Double operation with two input operands
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*
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* R3 = (double*)&fpscr
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* R4 = (u32*)&cr
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* R5 = (double*)¶m1
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* R6 = (double*)¶m2
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* R7 = (double*)¶m3
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*/
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#define FPD_TWO_IN_CR(name) \
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_GLOBAL(fpd_ ## name); \
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lfd 1,0(r6); /* load param2 */ \
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lfd 0,0(r5); /* load param1 */ \
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lfd 3,0(r3); /* load up fpscr value */ \
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MTFSF_L(3); \
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lwz r6, 0(r4); /* load cr */ \
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mtcr r6; \
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\
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name 0,0,1; /* call instruction */ \
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mfcr r6; \
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mffs 0; \
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stfd 0,0(r3); /* save new fpscr value */ \
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stw r6,0(r4); /* save new cr value */ \
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blr
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/*
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* Double operation with three input operands
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*
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* R3 = (double*)&fpscr
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* R4 = (u32*)&cr
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* R5 = (double*)&result
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* R6 = (double*)¶m1
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* R7 = (double*)¶m2
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* R8 = (double*)¶m3
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*/
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#define FPD_THREE_IN(name) \
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_GLOBAL(fpd_ ## name); \
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mflr r12; \
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bl fpd_load_three; \
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mtlr r12; \
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\
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name. 0,0,1,2; /* call instruction */ \
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b fpd_return
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FPD_ONE_IN(fsqrts)
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FPD_ONE_IN(frsqrtes)
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FPD_ONE_IN(fres)
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FPD_ONE_IN(frsp)
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FPD_ONE_IN(fctiw)
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FPD_ONE_IN(fctiwz)
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FPD_ONE_IN(fsqrt)
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FPD_ONE_IN(fre)
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FPD_ONE_IN(frsqrte)
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FPD_ONE_IN(fneg)
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FPD_ONE_IN(fabs)
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FPD_TWO_IN(fadds)
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FPD_TWO_IN(fsubs)
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FPD_TWO_IN(fdivs)
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FPD_TWO_IN(fmuls)
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FPD_TWO_IN_CR(fcmpu)
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FPD_TWO_IN(fcpsgn)
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FPD_TWO_IN(fdiv)
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FPD_TWO_IN(fadd)
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FPD_TWO_IN(fmul)
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FPD_TWO_IN_CR(fcmpo)
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FPD_TWO_IN(fsub)
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FPD_THREE_IN(fmsubs)
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FPD_THREE_IN(fmadds)
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FPD_THREE_IN(fnmsubs)
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FPD_THREE_IN(fnmadds)
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FPD_THREE_IN(fsel)
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FPD_THREE_IN(fmsub)
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FPD_THREE_IN(fmadd)
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FPD_THREE_IN(fnmsub)
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FPD_THREE_IN(fnmadd)
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_GLOBAL(kvm_cvt_fd)
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lfs 0,0(r3)
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stfd 0,0(r4)
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blr
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_GLOBAL(kvm_cvt_df)
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lfd 0,0(r3)
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stfs 0,0(r4)
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blr
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