OpenCores
URL https://opencores.org/ocsvn/open8_urisc/open8_urisc/trunk

Subversion Repositories open8_urisc

[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [gas/] [doc/] [c-score.texi] - Blame information for rev 179

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 179 jshamlet
@c Copyright 2009, 2011
2
@c Free Software Foundation, Inc.
3
@c This is part of the GAS manual.
4
@c For copying conditions, see the file as.texinfo.
5
@ifset GENERIC
6
@page
7
@node SCORE-Dependent
8
@chapter SCORE Dependent Features
9
@end ifset
10
@ifclear GENERIC
11
@node Machine Dependencies
12
@chapter SCORE Dependent Features
13
@end ifclear
14
 
15
@cindex SCORE processor
16
@menu
17
* SCORE-Opts::          Assembler options
18
* SCORE-Pseudo::        SCORE Assembler Directives
19
* SCORE-Syntax::        Syntax
20
@end menu
21
 
22
@node SCORE-Opts
23
@section Options
24
 
25
@cindex options for SCORE
26
@cindex SCORE options
27
@cindex architectures, SCORE
28
@cindex SCORE architectures
29
 
30
The following table lists all available SCORE options.
31
 
32
@table @code
33
@item -G @var{num}
34
This option sets the largest size of an object that can be referenced
35
implicitly with the @code{gp} register. The default value is 8.
36
 
37
@item -EB
38
Assemble code for a big-endian cpu
39
 
40
@itemx -EL
41
Assemble code for a little-endian cpu
42
 
43
@item -FIXDD
44
Assemble code for fix data dependency
45
 
46
@item -NWARN
47
Assemble code for no warning message for fix data dependency
48
 
49
@item -SCORE5
50
Assemble code for target is SCORE5
51
 
52
@itemx -SCORE5U
53
Assemble code for target is SCORE5U
54
 
55
@itemx -SCORE7
56
Assemble code for target is SCORE7, this is default setting
57
 
58
@itemx -SCORE3
59
Assemble code for target is SCORE3
60
 
61
@item -march=score7
62
Assemble code for target is SCORE7, this is default setting
63
 
64
@item -march=score3
65
Assemble code for target is SCORE3
66
 
67
@item -USE_R1
68
Assemble code for no warning message when using temp register r1
69
 
70
@item -KPIC
71
Generate code for PIC.  This option tells the assembler to generate
72
score position-independent macro expansions.  It also tells the
73
assembler to mark the output file as PIC.
74
 
75
@item -O0
76
Assembler will not perform any optimizations
77
 
78
@item -V
79
Sunplus release version
80
 
81
@end table
82
 
83
@node SCORE-Pseudo
84
@section SCORE Assembler Directives
85
 
86
@cindex directives for SCORE
87
@cindex SCORE directives
88
A number of assembler directives are available for SCORE.  The
89
following table is far from complete.
90
 
91
@table @code
92
@item .set nwarn
93
Let the assembler not to generate warnings if the source machine
94
language instructions happen data dependency.
95
 
96
@item .set fixdd
97
Let the assembler to insert bubbles (32 bit nop instruction /
98
16 bit nop! Instruction) if the source machine language instructions
99
happen data dependency.
100
 
101
@item .set nofixdd
102
Let the assembler to generate warnings if the source machine
103
language instructions happen data dependency. (Default)
104
 
105
@item .set r1
106
Let the assembler not to generate warnings if the source program
107
uses r1. allow user to use r1
108
 
109
@item set nor1
110
Let the assembler to generate warnings if the source program uses
111
r1. (Default)
112
 
113
@item .sdata
114
Tell the assembler to add subsequent data into the sdata section
115
 
116
@item .rdata
117
Tell the assembler to add subsequent data into the rdata section
118
 
119
@item .frame "frame-register", "offset", "return-pc-register"
120
Describe a stack frame. "frame-register" is the frame register,
121
"offset" is the distance from the frame register to the virtual
122
frame pointer, "return-pc-register" is the return program register.
123
You must use ".ent" before ".frame" and only one ".frame" can be
124
used per ".ent".
125
 
126
@item .mask "bitmask", "frameoffset"
127
Indicate which of the integer registers are saved in the current
128
function's stack frame, this is for the debugger to explain the
129
frame chain.
130
 
131
@item .ent "proc-name"
132
Set the beginning of the procedure "proc_name". Use this directive
133
when you want to generate information for the debugger.
134
 
135
@item .end proc-name
136
Set the end of a procedure. Use this directive to generate information
137
for the debugger.
138
 
139
@item .bss
140
Switch the destination of following statements into the bss section,
141
which is used for data that is uninitialized anywhere.
142
 
143
@end table
144
 
145
@node SCORE-Syntax
146
@section SCORE Syntax
147
@menu
148
* SCORE-Chars::                Special Characters
149
@end menu
150
 
151
@node SCORE-Chars
152
@subsection Special Characters
153
 
154
@cindex line comment character, SCORE
155
@cindex SCORE line comment character
156
The presence of a @samp{#} appearing anywhere on a line indicates the
157
start of a comment that extends to the end of that line.
158
 
159
If a @samp{#} appears as the first character of a line then the whole
160
line is treated as a comment, but in this case the line can also be a
161
logical line number directive (@pxref{Comments}) or a preprocessor
162
control command (@pxref{Preprocessing}).
163
 
164
@cindex line separator, SCORE
165
@cindex statement separator, SCORE
166
@cindex SCORE line separator
167
The @samp{;} character can be used to separate statements on the same
168
line.

powered by: WebSVN 2.1.0

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