312 lines
7.9 KiB
NASM
312 lines
7.9 KiB
NASM
|
;;###########################################################################
|
||
|
|
;;
|
||
|
|
;; FILE: IQNmpy.asm
|
||
|
|
;;
|
||
|
|
;; TITLE: C Callable IQ Multiply Math Function
|
||
|
|
;;
|
||
|
|
;;###########################################################################
|
||
|
|
;;
|
||
|
|
;; Ver | Date | Who | Description of changes
|
||
|
|
;; =====|=============|=======|==============================================
|
||
|
|
;; 1.2 | 11 Oct 2001 | A. T. | Original Release.
|
||
|
|
;; -----|-------------|-------|----------------------------------------------
|
||
|
|
;; 1.3 | 19 Nov 2001 | A. T. | No changes.
|
||
|
|
;; -----|-------------|-------|----------------------------------------------
|
||
|
|
;; 1.4 | 4 May 2002 | A. T. | No changes.
|
||
|
|
;; | | |
|
||
|
|
;; | | | Note: In CCS 2.01 and above, the codegen
|
||
|
|
;; | | | tools support an __IQmpy(..) intrinsic
|
||
|
|
;; | | | which replaces the IQNmpy(..) function.
|
||
|
|
;; -----|-------------|-------|----------------------------------------------
|
||
|
|
;; | | |
|
||
|
|
;;
|
||
|
|
;;###########################################################################
|
||
|
|
|
||
|
|
;;===========================================================================
|
||
|
|
;; Function: _IQNmpy
|
||
|
|
;;===========================================================================
|
||
|
|
;;
|
||
|
|
;; C Usage: extern long _IQmpy(long M, long X); // no round or sat
|
||
|
|
;;
|
||
|
|
;;---------------------------------------------------------------------------
|
||
|
|
;;
|
||
|
|
;; On Entry: ACC = M in IQ format
|
||
|
|
;; [SP-4] = X in IQ format
|
||
|
|
;;
|
||
|
|
;; Regs Used: XT, P
|
||
|
|
;;
|
||
|
|
;; On Exit: ACC = M * X in IQ format
|
||
|
|
;;
|
||
|
|
;; Q range: 30 to 1
|
||
|
|
;;
|
||
|
|
;;---------------------------------------------------------------------------
|
||
|
|
;; Algorithm: The IQmpy operation generates a 64-bit result. The 64-bit
|
||
|
|
;; number must then be scaled back to a 32-bit value with the
|
||
|
|
;; same Q value as the original inputs. For example: if Q = 27,
|
||
|
|
;; then the multiplication of two I5Q27 numbers results in the
|
||
|
|
;; following 64-bit value:
|
||
|
|
;;
|
||
|
|
;; I5Q27 * I5Q27 = I10Q54
|
||
|
|
;;
|
||
|
|
;; The value is then scaled back to an I5Q27 value as follows:
|
||
|
|
;;
|
||
|
|
;; I5Q27 = I10Q54 >> Q
|
||
|
|
;;
|
||
|
|
;; For some of the operations, the value is either rounded or
|
||
|
|
;; saturated (or both) to its maximum value before scaling.
|
||
|
|
;;
|
||
|
|
;;---------------------------------------------------------------------------
|
||
|
|
;; Benchmark:
|
||
|
|
;;
|
||
|
|
;; Cycles = 13 (Q >= 16, includes LCR/LRETR)
|
||
|
|
;; 14 (Q <= 15, includes LCR/LRETR)
|
||
|
|
;;
|
||
|
|
;;---------------------------------------------------------------------------
|
||
|
|
;;#############################################################################
|
||
|
|
;;!
|
||
|
|
;;! Copyright: Copyright (C) 2023 Texas Instruments Incorporated -
|
||
|
|
;;! All rights reserved not granted herein.
|
||
|
|
;;! Limited License.
|
||
|
|
;;!
|
||
|
|
;;! Texas Instruments Incorporated grants a world-wide, royalty-free,
|
||
|
|
;;! non-exclusive license under copyrights and patents it now or hereafter
|
||
|
|
;;! owns or controls to make, have made, use, import, offer to sell and sell
|
||
|
|
;;! ("Utilize") this software subject to the terms herein. With respect to the
|
||
|
|
;;! foregoing patent license, such license is granted solely to the extent that
|
||
|
|
;;! any such patent is necessary to Utilize the software alone. The patent
|
||
|
|
;;! license shall not apply to any combinations which include this software,
|
||
|
|
;;! other than combinations with devices manufactured by or for TI
|
||
|
|
;;! ("TI Devices").
|
||
|
|
;;! No hardware patent is licensed hereunder.
|
||
|
|
;;!
|
||
|
|
;;! Redistributions must preserve existing copyright notices and reproduce this
|
||
|
|
;;! license (including the above copyright notice and the disclaimer and
|
||
|
|
;;! (if applicable) source code license limitations below) in the documentation
|
||
|
|
;;! and/or other materials provided with the distribution.
|
||
|
|
;;!
|
||
|
|
;;! Redistribution and use in binary form, without modification, are permitted
|
||
|
|
;;! provided that the following conditions are met:
|
||
|
|
;;!
|
||
|
|
;;! * No reverse engineering, decompilation, or disassembly of this software is
|
||
|
|
;;! permitted with respect to any software provided in binary form.
|
||
|
|
;;! * Any redistribution and use are licensed by TI for use only
|
||
|
|
;;! with TI Devices.
|
||
|
|
;;! * Nothing shall obligate TI to provide you with source code for the
|
||
|
|
;;! software licensed and provided to you in object code.
|
||
|
|
;;!
|
||
|
|
;;! If software source code is provided to you, modification and redistribution
|
||
|
|
;;! of the source code are permitted provided that the following conditions
|
||
|
|
;;! are met:
|
||
|
|
;;!
|
||
|
|
;;! * any redistribution and use of the source code, including any resulting
|
||
|
|
;;! derivative works, are licensed by TI for use only with TI Devices.
|
||
|
|
;;! * any redistribution and use of any object code compiled from the source
|
||
|
|
;;! code and any resulting derivative works, are licensed by TI for use
|
||
|
|
;;! only with TI Devices.
|
||
|
|
;;!
|
||
|
|
;;! Neither the name of Texas Instruments Incorporated nor the names of its
|
||
|
|
;;! suppliers may be used to endorse or promote products derived from this
|
||
|
|
;;! software without specific prior written permission.
|
||
|
|
;;#############################################################################
|
||
|
|
|
||
|
|
IQNmpy .macro q_value
|
||
|
|
MOVL XT,@ACC ; XT = M
|
||
|
|
IMPYL P,XT,*-SP[4]
|
||
|
|
QMPYL ACC,XT,*-SP[4] ; ACC:P = M * X
|
||
|
|
.if q_value >= 16
|
||
|
|
LSL64 ACC:P,#(32 - q_value) ; Scale back to required IQ value
|
||
|
|
.endif
|
||
|
|
.if q_value <= 15
|
||
|
|
LSL64 ACC:P,#16 ; Scale back to required IQ value
|
||
|
|
LSL64 ACC:P,#(16 - q_value)
|
||
|
|
.endif
|
||
|
|
LRETR
|
||
|
|
.endm
|
||
|
|
|
||
|
|
;; The value "GLOBAL_Q" needs to be supplied by the assembler
|
||
|
|
;; using the "-dGLOBAL_Q=q_value" directive:
|
||
|
|
.sect "IQmath"
|
||
|
|
.if GLOBAL_Q == 30
|
||
|
|
.def __IQ30mpy
|
||
|
|
__IQ30mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 29
|
||
|
|
.def __IQ29mpy
|
||
|
|
__IQ29mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 28
|
||
|
|
.def __IQ28mpy
|
||
|
|
__IQ28mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 27
|
||
|
|
.def __IQ27mpy
|
||
|
|
__IQ27mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 26
|
||
|
|
.def __IQ26mpy
|
||
|
|
__IQ26mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 25
|
||
|
|
.def __IQ25mpy
|
||
|
|
__IQ25mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 24
|
||
|
|
.def __IQ24mpy
|
||
|
|
__IQ24mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 23
|
||
|
|
.def __IQ23mpy
|
||
|
|
__IQ23mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 22
|
||
|
|
.def __IQ22mpy
|
||
|
|
__IQ22mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 21
|
||
|
|
.def __IQ21mpy
|
||
|
|
__IQ21mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 20
|
||
|
|
.def __IQ20mpy
|
||
|
|
__IQ20mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 19
|
||
|
|
.def __IQ19mpy
|
||
|
|
__IQ19mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 18
|
||
|
|
.def __IQ18mpy
|
||
|
|
__IQ18mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 17
|
||
|
|
.def __IQ17mpy
|
||
|
|
__IQ17mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 16
|
||
|
|
.def __IQ16mpy
|
||
|
|
__IQ16mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 15
|
||
|
|
.def __IQ15mpy
|
||
|
|
__IQ15mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 14
|
||
|
|
.def __IQ14mpy
|
||
|
|
__IQ14mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 13
|
||
|
|
.def __IQ13mpy
|
||
|
|
__IQ13mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 12
|
||
|
|
.def __IQ12mpy
|
||
|
|
__IQ12mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 11
|
||
|
|
.def __IQ11mpy
|
||
|
|
__IQ11mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 10
|
||
|
|
.def __IQ10mpy
|
||
|
|
__IQ10mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 9
|
||
|
|
.def __IQ9mpy
|
||
|
|
__IQ9mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 8
|
||
|
|
.def __IQ8mpy
|
||
|
|
__IQ8mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 7
|
||
|
|
.def __IQ7mpy
|
||
|
|
__IQ7mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 6
|
||
|
|
.def __IQ6mpy
|
||
|
|
__IQ6mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 5
|
||
|
|
.def __IQ5mpy
|
||
|
|
__IQ5mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 4
|
||
|
|
.def __IQ4mpy
|
||
|
|
__IQ4mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 3
|
||
|
|
.def __IQ3mpy
|
||
|
|
__IQ3mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 2
|
||
|
|
.def __IQ2mpy
|
||
|
|
__IQ2mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
.if GLOBAL_Q == 1
|
||
|
|
.def __IQ1mpy
|
||
|
|
__IQ1mpy:
|
||
|
|
IQNmpy GLOBAL_Q
|
||
|
|
.endif
|
||
|
|
|
||
|
|
;;###########################################################################
|
||
|
|
;; No More.
|
||
|
|
;;###########################################################################
|