summaryrefslogtreecommitdiffstats
path: root/meta-xilinx-bsp/recipes-microblaze/gcc/gcc-7/0014-Removed-MicroBlaze-moddi3-routinue.patch
blob: b01957187581598a72c93c4c8c31a75ad7ab0b7a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
From a68e94fc57bcf60cb730894e49dde55d081397f5 Mon Sep 17 00:00:00 2001
From: Mahesh Bodapati <mbodapat@xilinx.com>
Date: Sat, 26 Aug 2017 19:21:28 -0700
Subject: [PATCH] Removed MicroBlaze moddi3 routinue

Removed moddi3 routinue Using the default moddi3 function as the
existing implementation has many bugs

Signed-off-by: Nagaraju Mekala <nagaraju.mekala@xilinx.com>
Signed-off-by: Mahesh Bodapati <mbodapat@xilinx.com>
Signed-off-by: Manjukumar Matha <manjukumar.harthikote-matha@xilinx.com>
Upstream-Status: Pending
---
 libgcc/config/microblaze/moddi3.S     | 115 ----------------------------------
 libgcc/config/microblaze/t-microblaze |   3 +-
 2 files changed, 1 insertion(+), 117 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 bcea079476..0000000000
--- a/libgcc/config/microblaze/moddi3.S
+++ /dev/null
@@ -1,115 +0,0 @@
-###################################
-# 
-#  Copyright (C) 2009-2017 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.
-# 
-#######################################
-
-
-	.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 96959f0292..8d954a4957 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 \
-- 
2.14.2