| From 14ddb3217fbb84c48903124ec6a3614b4707630d Mon Sep 17 00:00:00 2001 |
| From: Mahesh Bodapati <mbodapat@xilinx.com> |
| Date: Thu, 12 Jan 2017 17:36:16 +0530 |
| Subject: [PATCH 16/63] [Patch, microblaze]: Removed moddi3 routinue Using the |
| default moddi3 function as the existing implementation has many bugs |
| |
| Signed-off-by:Nagaraju <nmekala@xilix.com> |
| |
| Conflicts: |
| libgcc/config/microblaze/moddi3.S |
| --- |
| libgcc/config/microblaze/moddi3.S | 121 ---------------------------------- |
| libgcc/config/microblaze/t-microblaze | 3 +- |
| 2 files changed, 1 insertion(+), 123 deletions(-) |
| delete mode 100644 libgcc/config/microblaze/moddi3.S |
| |
| diff --git a/libgcc/config/microblaze/moddi3.S b/libgcc/config/microblaze/moddi3.S |
| deleted file mode 100644 |
| index abfe4fc..0000000 |
| --- a/libgcc/config/microblaze/moddi3.S |
| +++ /dev/null |
| @@ -1,121 +0,0 @@ |
| -################################### |
| -# |
| -# Copyright (C) 2009-2019 Free Software Foundation, Inc. |
| -# |
| -# Contributed by Michael Eager <eager@eagercon.com>. |
| -# |
| -# This file 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 3, or (at your option) any |
| -# later version. |
| -# |
| -# GCC is distributed in the hope that it will be useful, but WITHOUT |
| -# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
| -# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
| -# License for more details. |
| -# |
| -# Under Section 7 of GPL version 3, you are granted additional |
| -# permissions described in the GCC Runtime Library Exception, version |
| -# 3.1, as published by the Free Software Foundation. |
| -# |
| -# You should have received a copy of the GNU General Public License and |
| -# a copy of the GCC Runtime Library Exception along with this program; |
| -# see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| -# <http://www.gnu.org/licenses/>. |
| -# |
| -# modsi3.S |
| -# |
| -# modulo operation for 64 bit integers. |
| -# |
| -####################################### |
| - |
| - |
| -/* An executable stack is *not* required for these functions. */ |
| -#ifdef __linux__ |
| -.section .note.GNU-stack,"",%progbits |
| -.previous |
| -#endif |
| - |
| - .globl __moddi3 |
| - .ent __moddi3 |
| -__moddi3: |
| - .frame r1,0,r15 |
| - |
| -#Change the stack pointer value and Save callee saved regs |
| - addik r1,r1,-24 |
| - swi r25,r1,0 |
| - swi r26,r1,4 |
| - swi r27,r1,8 # used for sign |
| - swi r28,r1,12 # used for loop count |
| - swi r29,r1,16 # Used for div value High |
| - swi r30,r1,20 # Used for div value Low |
| - |
| -#Check for Zero Value in the divisor/dividend |
| - OR r9,r5,r6 # Check for the op1 being zero |
| - BEQID r9,$LaResult_Is_Zero # Result is zero |
| - OR r9,r7,r8 # Check for the dividend being zero |
| - BEQI r9,$LaDiv_By_Zero # Div_by_Zero # Division Error |
| - BGEId r5,$La1_Pos |
| - XOR r27,r5,r7 # Get the sign of the result |
| - RSUBI r6,r6,0 # Make dividend positive |
| - RSUBIC r5,r5,0 # Make dividend positive |
| -$La1_Pos: |
| - BGEI r7,$La2_Pos |
| - RSUBI r8,r8,0 # Make Divisor Positive |
| - RSUBIC r9,r9,0 # Make Divisor Positive |
| -$La2_Pos: |
| - ADDIK r4,r0,0 # Clear mod low |
| - ADDIK r3,r0,0 # Clear mod high |
| - ADDIK r29,r0,0 # clear div high |
| - ADDIK r30,r0,0 # clear div low |
| - ADDIK r28,r0,64 # Initialize the loop count |
| - # First part try to find the first '1' in the r5/r6 |
| -$LaDIV1: |
| - ADD r6,r6,r6 |
| - ADDC r5,r5,r5 # left shift logical r5 |
| - BGEID r5,$LaDIV1 |
| - ADDIK r28,r28,-1 |
| -$LaDIV2: |
| - ADD r6,r6,r6 |
| - ADDC r5,r5,r5 # left shift logical r5/r6 get the '1' into the Carry |
| - ADDC r4,r4,r4 # Move that bit into the Mod register |
| - ADDC r3,r3,r3 # Move carry into high mod register |
| - rsub r18,r7,r3 # Compare the High Parts of Mod and Divisor |
| - bnei r18,$L_High_EQ |
| - rsub r18,r6,r4 # Compare Low Parts only if Mod[h] == Divisor[h] |
| -$L_High_EQ: |
| - rSUB r26,r8,r4 # Subtract divisor[L] from Mod[L] |
| - rsubc r25,r7,r3 # Subtract divisor[H] from Mod[H] |
| - BLTi r25,$LaMOD_TOO_SMALL |
| - OR r3,r0,r25 # move r25 to mod [h] |
| - OR r4,r0,r26 # move r26 to mod [l] |
| - ADDI r30,r30,1 |
| - ADDC r29,r29,r0 |
| -$LaMOD_TOO_SMALL: |
| - ADDIK r28,r28,-1 |
| - BEQi r28,$LaLOOP_END |
| - ADD r30,r30,r30 # Shift in the '1' into div [low] |
| - ADDC r29,r29,r29 # Move the carry generated into high |
| - BRI $LaDIV2 # Div2 |
| -$LaLOOP_END: |
| - BGEI r27,$LaRETURN_HERE |
| - rsubi r30,r30,0 |
| - rsubc r29,r29,r0 |
| - BRI $LaRETURN_HERE |
| -$LaDiv_By_Zero: |
| -$LaResult_Is_Zero: |
| - or r29,r0,r0 # set result to 0 [High] |
| - or r30,r0,r0 # set result to 0 [Low] |
| -$LaRETURN_HERE: |
| -# Restore values of CSRs and that of r29 and the divisor and the dividend |
| - |
| - lwi r25,r1,0 |
| - lwi r26,r1,4 |
| - lwi r27,r1,8 |
| - lwi r28,r1,12 |
| - lwi r29,r1,16 |
| - lwi r30,r1,20 |
| - rtsd r15,8 |
| - addik r1,r1,24 |
| - .end __moddi3 |
| - |
| diff --git a/libgcc/config/microblaze/t-microblaze b/libgcc/config/microblaze/t-microblaze |
| index 96959f0..8d954a4 100644 |
| --- a/libgcc/config/microblaze/t-microblaze |
| +++ b/libgcc/config/microblaze/t-microblaze |
| @@ -1,8 +1,7 @@ |
| -LIB2FUNCS_EXCLUDE += _divsi3 _modsi3 _moddi3 _mulsi3 _udivsi3 _umodsi3 |
| +LIB2FUNCS_EXCLUDE += _divsi3 _modsi3 _mulsi3 _udivsi3 _umodsi3 |
| |
| LIB2ADD += \ |
| $(srcdir)/config/microblaze/divsi3.S \ |
| - $(srcdir)/config/microblaze/moddi3.S \ |
| $(srcdir)/config/microblaze/modsi3.S \ |
| $(srcdir)/config/microblaze/muldi3_hard.S \ |
| $(srcdir)/config/microblaze/mulsi3.S \ |
| -- |
| 2.7.4 |
| |