Mercurial > hg > index.cgi

annotate docs/manual/x925.html @ 389:2d9b7ae6c329

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Throw error if address overflows in extended mode This may or may not cause extra problems due to sloppiness in dealing with calculations that overflow in 16 bits. However, presumably it is a good idea so unless something major pops up, it seems like a good idea. Thanks to Erik G <erik@6809.org> for the patch.
author William Astle <lost@l-w.ca>
date Mon, 13 Jul 2015 21:37:49 -0600
parents 682524a1f32f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
369
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
2 <HTML
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
3 ><HEAD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
4 ><TITLE
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
5 >Format Specific Linking Notes</TITLE
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
6 ><META
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
7 NAME="GENERATOR"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
8 CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
9 REL="HOME"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
10 TITLE="LW Tool Chain"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
11 HREF="index.html"><LINK
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
12 REL="UP"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
13 TITLE="LWLINK"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
14 HREF="c745.html"><LINK
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
15 REL="PREVIOUS"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
16 TITLE="Linking Scripts"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
17 HREF="x859.html"><LINK
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
18 REL="NEXT"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
19 TITLE="Libraries and LWAR"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
20 HREF="c940.html"></HEAD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
21 ><BODY
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
22 CLASS="SECTION"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
23 BGCOLOR="#FFFFFF"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
24 TEXT="#000000"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
25 LINK="#0000FF"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
26 VLINK="#840084"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
27 ALINK="#0000FF"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
28 ><DIV
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
29 CLASS="NAVHEADER"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
30 ><TABLE
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
31 SUMMARY="Header navigation table"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
32 WIDTH="100%"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
33 BORDER="0"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
34 CELLPADDING="0"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
35 CELLSPACING="0"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
36 ><TR
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
37 ><TH
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
38 COLSPAN="3"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
39 ALIGN="center"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
40 >LW Tool Chain</TH
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
41 ></TR
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
42 ><TR
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
43 ><TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
44 WIDTH="10%"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
45 ALIGN="left"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
46 VALIGN="bottom"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
47 ><A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
48 HREF="x859.html"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
49 ACCESSKEY="P"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
50 >Prev</A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
51 ></TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
52 ><TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
53 WIDTH="80%"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
54 ALIGN="center"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
55 VALIGN="bottom"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
56 >Chapter 4. LWLINK</TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
57 ><TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
58 WIDTH="10%"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
59 ALIGN="right"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
60 VALIGN="bottom"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
61 ><A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
62 HREF="c940.html"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
63 ACCESSKEY="N"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
64 >Next</A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
65 ></TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
66 ></TR
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
67 ></TABLE
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
68 ><HR
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
69 ALIGN="LEFT"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
70 WIDTH="100%"></DIV
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
71 ><DIV
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
72 CLASS="SECTION"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
73 ><H1
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
74 CLASS="SECTION"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
75 ><A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
76 NAME="AEN925"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
77 >4.4. Format Specific Linking Notes</A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
78 ></H1
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
79 ><P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
80 >Some formats require special information to be able to generate actual
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
81 binaries. If the specific format you are interested in is not listed in
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
82 this section, then there is nothing special you need to know about to create
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
83 a final binary.</P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
84 ><DIV
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
85 CLASS="SECTION"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
86 ><H2
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
87 CLASS="SECTION"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
88 ><A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
89 NAME="AEN928"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
90 >4.4.1. OS9 Modules</A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
91 ></H2
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
92 ><P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
93 >OS9 modules need to embed several items into the module header. These
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
94 items are the type of module, the langauge of the module, the module
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
95 attributes, the module revision number, the data size (bss), and the
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
96 execution offset. These are all either calculated or default to reasonable
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
97 values.</P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
98 ><P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
99 >The data size is calcuated as the sum of all sections named "bss" or
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
100 ".bss" in all object files that are linked together.</P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
101 ><P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
102 >The execution offset is calculated from the address of the special
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
103 symbol "__start" which must be an exported (external) symbol in one of the
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
104 objects to be linked.</P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
105 ><P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
106 >The type defaults to "Prgrm" or "Program module". The language
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
107 defaults to "Objct" or "6809 object code". Attributes default to enabling
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
108 the re-entrant flag. And finally, the revision defaults to zero.</P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
109 ><P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
110 >The embedded module name is the output filename. If the output
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
111 filename includes more than just the filename, this will probably not be
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
112 what you want.</P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
113 ><P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
114 >The type, language, attributes, revision, and module name can all be
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
115 overridden by providing a special section in exactly one of the object files
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
116 to be linked. This section is called "__os9" (note the two underscores).
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
117 To override the type, language, attributes, or revision values, define a
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
118 non-exported symbol in this section called "type", "lang", "attr", or "rev"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
119 respectively. Any other symbols defined are ignored. To override the
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
120 module name, include as the only actual code in the section a NUL terminated
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
121 string (the FCN directive is useful for this). If there is no code in the
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
122 section or it beings with a NUL, the default name will be used. Any of the
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
123 preceeding that are not defined in the special section will retain their
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
124 default values.</P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
125 ><P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
126 >The built-in link script for OS9 modules will place the following
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
127 sections, in order, in the module: "code", ".text", "data", ".data". It
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
128 will merge all sections with the name "bss" or ".bss" into the "data"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
129 section. All other section names are ignored. What this means is that you
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
130 must define your data variables in the a section called "bss" or ".bss" even
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
131 though you will be refencing them all as offsets from U. This does have the
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
132 unpleasant side effect that all BSS references will end up being 16 bit
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
133 offsets because the assembler cannot know what the offset will be once the
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
134 linker is finished its work. Thus, if the tightest possible code is
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
135 required, having LWASM directly output the module is a better choice.</P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
136 ><P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
137 >While the built-in link script is probably sufficient for most
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
138 purposes, you can provide your own script. If you provide a custom link
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
139 script, you must start your code and data sections at location 000D to
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
140 accommodate the module header. Otherwise, you will have an incorrect
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
141 location for the execution offset. You must use the ENTRY directive in the
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
142 script to define the entry point for the module.</P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
143 ><P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
144 >It should also be obvious from the above that you cannot mix the bss
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
145 (rmb) definitions with the module code when linking separately. Those
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
146 familiar with typical module creation will probably find this an unpleasant
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
147 difference but it is unavoidable.</P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
148 ><P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
149 >It should also be noted that direct page references should also be
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
150 avoided because you cannot know ahead of time whether the linker is going to
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
151 end up putting a particular variable in the first 256 bytes of the module's
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
152 data space. If, however, you know for certain you will have less than 256
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
153 bytes of defined data space across all of the object files that will be
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
154 linked, you can instead use forced DP addressing for your data addresses
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
155 instead of the ,u notation. When linking with 3rd party libraries, this
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
156 practice should be avoided. Also, when creating libraries, always use the
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
157 offset from U technique.</P
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
158 ></DIV
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
159 ></DIV
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
160 ><DIV
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
161 CLASS="NAVFOOTER"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
162 ><HR
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
163 ALIGN="LEFT"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
164 WIDTH="100%"><TABLE
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
165 SUMMARY="Footer navigation table"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
166 WIDTH="100%"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
167 BORDER="0"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
168 CELLPADDING="0"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
169 CELLSPACING="0"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
170 ><TR
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
171 ><TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
172 WIDTH="33%"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
173 ALIGN="left"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
174 VALIGN="top"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
175 ><A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
176 HREF="x859.html"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
177 ACCESSKEY="P"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
178 >Prev</A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
179 ></TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
180 ><TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
181 WIDTH="34%"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
182 ALIGN="center"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
183 VALIGN="top"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
184 ><A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
185 HREF="index.html"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
186 ACCESSKEY="H"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
187 >Home</A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
188 ></TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
189 ><TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
190 WIDTH="33%"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
191 ALIGN="right"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
192 VALIGN="top"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
193 ><A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
194 HREF="c940.html"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
195 ACCESSKEY="N"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
196 >Next</A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
197 ></TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
198 ></TR
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
199 ><TR
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
200 ><TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
201 WIDTH="33%"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
202 ALIGN="left"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
203 VALIGN="top"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
204 >Linking Scripts</TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
205 ><TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
206 WIDTH="34%"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
207 ALIGN="center"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
208 VALIGN="top"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
209 ><A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
210 HREF="c745.html"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
211 ACCESSKEY="U"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
212 >Up</A
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
213 ></TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
214 ><TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
215 WIDTH="33%"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
216 ALIGN="right"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
217 VALIGN="top"
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
218 >Libraries and LWAR</TD
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
219 ></TR
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
220 ></TABLE
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
221 ></DIV
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
222 ></BODY
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
223 ></HTML
682524a1f32f Updated documentation for --symbols-nolocals and --map
William Astle <lost@l-w.ca>
parents:
diff changeset
224 >