OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [arm/] [bpabi.S] - Blame information for rev 282

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 282 jeremybenn
/* Miscellaneous BPABI functions.
2
 
3
   Copyright (C) 2003, 2004, 2007, 2008, 2009  Free Software Foundation, Inc.
4
   Contributed by CodeSourcery, LLC.
5
 
6
   This file is free software; you can redistribute it and/or modify it
7
   under the terms of the GNU General Public License as published by the
8
   Free Software Foundation; either version 3, or (at your option) any
9
   later version.
10
 
11
   This file is distributed in the hope that it will be useful, but
12
   WITHOUT ANY WARRANTY; without even the implied warranty of
13
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14
   General Public License for more details.
15
 
16
   Under Section 7 of GPL version 3, you are granted additional
17
   permissions described in the GCC Runtime Library Exception, version
18
   3.1, as published by the Free Software Foundation.
19
 
20
   You should have received a copy of the GNU General Public License and
21
   a copy of the GCC Runtime Library Exception along with this program;
22
   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
23
   .  */
24
 
25
#ifdef L_aeabi_lcmp
26
 
27
ARM_FUNC_START aeabi_lcmp
28
        cmp     xxh, yyh
29
        do_it   lt
30
        movlt   r0, #-1
31
        do_it   gt
32
        movgt   r0, #1
33
        do_it   ne
34
        RETc(ne)
35
        subs    r0, xxl, yyl
36
        do_it   lo
37
        movlo   r0, #-1
38
        do_it   hi
39
        movhi   r0, #1
40
        RET
41
        FUNC_END aeabi_lcmp
42
 
43
#endif /* L_aeabi_lcmp */
44
 
45
#ifdef L_aeabi_ulcmp
46
 
47
ARM_FUNC_START aeabi_ulcmp
48
        cmp     xxh, yyh
49
        do_it   lo
50
        movlo   r0, #-1
51
        do_it   hi
52
        movhi   r0, #1
53
        do_it   ne
54
        RETc(ne)
55
        cmp     xxl, yyl
56
        do_it   lo
57
        movlo   r0, #-1
58
        do_it   hi
59
        movhi   r0, #1
60
        do_it   eq
61
        moveq   r0, #0
62
        RET
63
        FUNC_END aeabi_ulcmp
64
 
65
#endif /* L_aeabi_ulcmp */
66
 
67
.macro test_div_by_zero signed
68
/* Tail-call to divide-by-zero handlers which may be overridden by the user,
69
   so unwinding works properly.  */
70
#if defined(__thumb2__)
71
        cbnz    yyh, 1f
72
        cbnz    yyl, 1f
73
        cmp     xxh, #0
74
        do_it   eq
75
        cmpeq   xxl, #0
76
        .ifc \signed, unsigned
77
        beq     2f
78
        mov     xxh, #0xffffffff
79
        mov     xxl, xxh
80
2:
81
        .else
82
        do_it   lt, t
83
        movlt   xxl, #0
84
        movlt   xxh, #0x80000000
85
        do_it   gt, t
86
        movgt   xxh, #0x7fffffff
87
        movgt   xxl, #0xffffffff
88
        .endif
89
        b       SYM (__aeabi_ldiv0) __PLT__
90
1:
91
#else
92
        /* Note: Thumb-1 code calls via an ARM shim on processors which
93
           support ARM mode.  */
94
        cmp     yyh, #0
95
        cmpeq   yyl, #0
96
        bne     2f
97
        cmp     xxh, #0
98
        cmpeq   xxl, #0
99
        .ifc \signed, unsigned
100
        movne   xxh, #0xffffffff
101
        movne   xxl, #0xffffffff
102
        .else
103
        movlt   xxh, #0x80000000
104
        movlt   xxl, #0
105
        movgt   xxh, #0x7fffffff
106
        movgt   xxl, #0xffffffff
107
        .endif
108
        b       SYM (__aeabi_ldiv0) __PLT__
109
2:
110
#endif
111
.endm
112
 
113
#ifdef L_aeabi_ldivmod
114
 
115
ARM_FUNC_START aeabi_ldivmod
116
        test_div_by_zero signed
117
 
118
        sub sp, sp, #8
119
#if defined(__thumb2__)
120
        mov ip, sp
121
        push {ip, lr}
122
#else
123
        do_push {sp, lr}
124
#endif
125
        bl SYM(__gnu_ldivmod_helper) __PLT__
126
        ldr lr, [sp, #4]
127
        add sp, sp, #8
128
        do_pop {r2, r3}
129
        RET
130
 
131
#endif /* L_aeabi_ldivmod */
132
 
133
#ifdef L_aeabi_uldivmod
134
 
135
ARM_FUNC_START aeabi_uldivmod
136
        test_div_by_zero unsigned
137
 
138
        sub sp, sp, #8
139
#if defined(__thumb2__)
140
        mov ip, sp
141
        push {ip, lr}
142
#else
143
        do_push {sp, lr}
144
#endif
145
        bl SYM(__gnu_uldivmod_helper) __PLT__
146
        ldr lr, [sp, #4]
147
        add sp, sp, #8
148
        do_pop {r2, r3}
149
        RET
150
 
151
#endif /* L_aeabi_divmod */
152
 

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.