intrinsi.h

Newlib 嵌入式 C库 标准实现代码

; @(#)intrinsi.h	1.4 90/10/14 20:56:06, Copyright 1988, 1989, 1990 AMD
; start of file intrinsi.h
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; Copyright 1990 Advanced Micro Devices, Inc.
;
; This software is the property of Advanced Micro Devices, Inc  (AMD)  which
; specifically  grants the user the right to modify, use and distribute this
; software provided this notice is not removed or altered.  All other rights
; are reserved by AMD.
;
; AMD MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS
; SOFTWARE.  IN NO EVENT SHALL AMD BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL
; DAMAGES IN CONNECTION WITH OR ARISING FROM THE FURNISHING, PERFORMANCE, OR
; USE OF THIS SOFTWARE.
;
; So that all may benefit from your experience, please report  any  problems
; or  suggestions about this software to the 29K Technical Support Center at
; 800-29-29-AMD (800-292-9263) in the USA, or 0800-89-1131  in  the  UK,  or
; 0031-11-1129 in Japan, toll free.  The direct dial number is 512-462-4118.
;
; Advanced Micro Devices, Inc.
; 29K Support Products
; Mail Stop 573
; 5900 E. Ben White Blvd.
; Austin, TX 78741
; 800-292-9263
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
; 
  .title "QTC Intrinsics Header file"
;
;    Floating point library package for AMD 29000 family
;
;    Copyright 1988 Advanced Micro Devices, Inc.
;
;    All rights reserved
;
;    Developed for AMD by Quantitative Technology Corporation
;                         8700 SW Creekside Place Suite D
;                         Beaverton OR 97005
;                         [phone]
;
;    Version information :
;
; Revision 1.6  89/06/29  16:08:51  jimh
; Fixed two bugs regarding compatiblility with the fpsymbol file.  The
; definitions of ROUND_TO_PLUS/MINUS_INFINITY were reversed.  Set_Rounding
; _Mode was fixed to set the local copy (29000 resident) of rounding mode
; in 29027 mode.
; 
; 
; Revision 1.5  89/04/17  11:20:49  jim
; replaced emfsr and emtsr macro calls with mfsr and mtsr instructions.
; 
; Revision 1.4  89/02/24  15:18:04  jimh
; Added the definitions of FP_ENV_MODE_1_DEFAULT, FP_ENV_MODE_2_DEFAULT, 
; FP_FLAGS_DEFAULT.
; Added macro clear_Flags.
; Changed the operation of set_Invalid_Op_flag, set_Reserved_Op_flag.
; 
; Revision 1.3  89/02/01  18:30:12  jimh
; Changed the way set_Rounding_Mode, extract_Rounding_Mode, set_Invalid_Op_flag
; and set_Reserved_Op_flag are done.  Changed save_FP_regs.
; 
; Revision 1.2  89/01/31  10:01:54  jimh
; Updated to the new standard.  This includes moving in register 
; definitions, changing old symbols to reflect those in fpsymbol.h,
; and changing the include file to smartmac.h.
; 
; 
 .include "../traps/fpenv.h"				; RPD 8/21/89
 .include "sys/smartmac.h"

  .equ DOUBLE_EXP_WIDTH, 11
  .equ DOUBLE_EXTENDED_WIDTH, 56

 .equ SIGNED, 0
 .equ UNSIGNED, 1

  .equ ROUND_TO_NEAREST,        0
  .equ ROUND_TO_MINUS_INFINITY, 1
  .equ ROUND_TO_PLUS_INFINITY,  2
  .equ ROUND_TO_ZERO,           3
  .equ ROUNDING_MODE_POSITION, 14 

 .equ FORMAT_INTEGER, 0
 .equ FORMAT_SINGLE,  1
 .equ FORMAT_DOUBLE,  2
      
 .equ DOUBLE_MSB_MASK,0x00080000
;
; The following are definitions used in the smart macro package, defining
; the 29000 shadow registers for the floating-point register file, and
; some temporary registers used during the library routines
;
 .reg FP0,  gr96
 .reg FP1,  gr98
 .reg FP2,  gr100
 .reg FP3,  gr102
 .reg FP4,  gr104
 .reg FP5,  gr106
 .reg FP6,  gr108
 .reg FP7,  gr110
; 
; GR60 through GR6F are used to return the value of a function
;
 .reg rtn0,  gr96
 .reg rtn1,  gr97
 .reg rtn2,  gr98
 .reg rtn3,  gr99
 .reg rtn4,  gr100
 .reg rtn5,  gr101
 .reg rtn6,  gr102
 .reg rtn7,  gr103
 .reg rtn8,  gr104
 .reg rtn9,  gr105
 .reg rtn10, gr106
 .reg rtn11, gr107
 .reg rtn12, gr108
 .reg rtn13, gr109
 .reg rtn14, gr110
 .reg rtn15, gr111
; 
; GR74..GR78 (116-120)    -  temporaries
;
 .reg t0, gr116
 .reg t1, gr117
 .reg t2, gr118
 .reg t3, gr119
 .reg t4, gr120
; 
; FP_ENV_MODE_1 and FP_ENV_MODE_2 are based on 64-bit 29027 Mode register,
; and thus the fpsymbol.h CP_ constants may be used directly.
; 
; FP_ENV_MODE_1 (Bits 0-31)
; 
;      0-3   - floating-point format select, always 0
;      4     - Saturate enable
;      5     - IEEE Affine/Projective mode (ignored by traps code)
;      6     - IEEE Trap enable
;      7     - IEEE Sudden underflow / FP Environment Fast Float Select
;      8-10  - ignored
;      11    - Integer multiplication signed/unsigned select
;      12-13 - Integer multiplication format adjust
;      14-16 - Rounding mode select
;      17-19 - ignored
;      20    - Pipeline mode select
;      21    - ignored
;      22    - Invalid operation mask bit
;      23    - Reserved operand mask bit
;      24    - Overflow mask bit
;      25    - Underflow mask bit
;      26    - Inexact result mask bit
;      27    - Zero mask bit
;      28-31 - ignored
; 
; FP_ENV_MODE_2 (Bits 32-63) [Hardware configuration register, rarely modified]
; 
;      32-35 - Pipeline timer count
;      36-39 - Timer count for multiply-accumulate operation
;      40-43 - Timer count for save state transaction request
;      44-63 - ignored
; 
; FP_ENV_MODE_1 definitions
;
    .set  FP_ENV_MODE_1_DEFAULT,                      CP_PFF_EQ_IEEE
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_AFF_EQ_IEEE
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_AFFINE_MODE
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_IEEE_TRAPS_DISABLED
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_IEEE_GRADUAL_UFLOW_MODE
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_UNSIGNED_INT_MPY_MODE
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_MF_EQ_LSBS
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_RMS_EQ_NEAREST
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_FLOWTHROUGH_MODE
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_INVALID_OP_EXCP_MASK
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_RESERVED_OP_EXCP_MASK
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_OVERFLOW_EXCP_MASK
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_UNDERFLOW_EXCP_MASK
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_INEXACT_EXCP_MASK
    .set  FP_ENV_MODE_1_DEFAULT,FP_ENV_MODE_1_DEFAULT|CP_ZERO_EXCP_MASK
;
; FP_ENV_MODE_2 definitions
;
    .set  FP_ENV_MODE_2_DEFAULT,                      CP_PLTC_EQ_6
    .set  FP_ENV_MODE_2_DEFAULT,FP_ENV_MODE_2_DEFAULT|CP_MATC_EQ_9
    .set  FP_ENV_MODE_2_DEFAULT,FP_ENV_MODE_2_DEFAULT|CP_MVTC_EQ_3
    .set  FP_ENV_MODE_2_DEFAULT,FP_ENV_MODE_2_DEFAULT|CP_NORMAL_DRDY_MODE
    .set  FP_ENV_MODE_2_DEFAULT,FP_ENV_MODE_2_DEFAULT|CP_HALT_ON_ERROR_DISABLED
    .set  FP_ENV_MODE_2_DEFAULT,FP_ENV_MODE_2_DEFAULT|CP_EXCP_DISABLED
;
; FP_FLAGS_DEFAULT definitions
;
    .equ  FP_FLAGS_DEFAULT,         0x00000000 ; No flags set
;
;  The following macros are used by transcendentals to access the environment.
;
;  MACRO NAME: clear_Flags
;
;  FUNCTION:  to clear the flags on entry to a transcendental routine.
;
;  INPUT PARAMETERS: reg  - temporary working register
;                    reg2 - temporary working register
;
 .macro clear_Flags,reg,reg2
 .endm
;
;  MACRO NAME: set_Invalid_Op_flag
;
;  FUNCTION:  to set the Invalid operation flag in the floating-point status
;             register
;
;  INPUT PARAMETERS: reg  - temporary working register
;                    reg2 - 2nd temporary working register
;
 .macro set_Invalid_Op_flag,reg,reg2
 .endm

;
;  MACRO NAME: set_Reserved_Op_flag
;
;  FUNCTION:  to set the Reserved Op flag in the floating-point status register
;
;  INPUT PARAMETERS: reg - temporary working register
;                    reg2 - 2nd temporary working register
;
 .macro set_Reserved_Op_flag,reg,reg2
 .endm

;