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Document the codesize, optimize and warn pragmas

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3131 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2004-06-15 21:20:34 +00:00
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doc/cc65.sgml
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@ -133,12 +133,13 @@ Here is a description of all the command line options:
Set the name of the code segment.
<label id="option-codesize">
<tag><tt>--codesize x</tt></tag>
This options allows finer control about speed vs. size decisions in the
code generation phase. It gives the allowed size increase factor (in
percent). The default is 100 when not using <tt/-Oi/ and 200 when using
<tt/-Oi/ (<tt/-Oi/ is the same as <tt/--codesize 200/).
This options allows finer control about speed vs. size decisions in the code
generation and optimization phases. It gives the allowed size increase
factor (in percent). The default is 100 when not using <tt/-Oi/ and 200 when
using <tt/-Oi/ (<tt/-Oi/ is the same as <tt/--codesize 200/).
<tag><tt>--cpu CPU</tt></tag>
@ -315,6 +316,7 @@ Here is a description of all the command line options:
search list.
<label id="option-O">
<tag><tt>-O, -Oi, -Or, -Os</tt></tag>
Enable an optimizer run over the produced code.
@ -364,6 +366,7 @@ Here is a description of all the command line options:
version.
<label id="option-W">
<tag><tt>-W</tt></tag>
This option will suppress any warnings generated by the compiler. Since
@ -732,7 +735,7 @@ parameter with the <tt/#pragma/.
</verb></tscreen>
<sect1><tt>#pragma checkstack (on|off)</tt><label id="pragma-checkstack"><p>
<sect1><tt>#pragma checkstack ([push,]on|off)</tt><label id="pragma-checkstack"><p>
Tells the compiler to insert calls to a stack checking subroutine to detect
stack overflows. The stack checking code will lead to somewhat larger and
@ -745,7 +748,7 @@ parameter with the <tt/#pragma/.
The <tt/#pragma/ understands the push and pop parameters as explained above.
<sect1><tt>#pragma codeseg (&lt;name&gt;)</tt><p>
<sect1><tt>#pragma codeseg ([push,]&lt;name&gt;)</tt><p>
This pragma changes the name used for the CODE segment (the CODE segment
is used to store executable code). The argument is a string enclosed in
@ -763,7 +766,17 @@ parameter with the <tt/#pragma/.
</verb></tscreen>
<sect1><tt>#pragma dataseg (&lt;name&gt;)</tt><p>
<sect1><tt>#pragma codesize ([push,]&lt;int&gt;)</tt><label id="pragma-codesize"><p>
This pragma allows finer control about speed vs. size decisions in the code
generation and optimization phase. It gives the allowed size increase factor
(in percent). The default is can be changed by use of the <tt/<ref
id="option-codesize" name="--codesize">/ compiler option.
The <tt/#pragma/ understands the push and pop parameters as explained above.
<sect1><tt>#pragma dataseg ([push,]&lt;name&gt;)</tt><p>
This pragma changes the name used for the DATA segment (the DATA segment
is used to store initialized data). The argument is a string enclosed in
@ -781,7 +794,23 @@ parameter with the <tt/#pragma/.
</verb></tscreen>
<sect1><tt>#pragma rodataseg (&lt;name&gt;)</tt><p>
<sect1><tt>#pragma optimize ([push,]on|off)</tt><label id="pragma-optimize"><p>
Switch optimization on or off. If the argument is "off", optimization is
disabled, otherwise it is enabled. Please note that this pragma only effects
whole functions. The setting in effect when the function is encountered will
determine if the generated code is optimized or not.
Optimization and code generation is also controlled by the <ref
id="pragma-codesize" name="codesize pragma">.
The default is "off", but may be changed with the <tt/<ref name="-O"
id="option-O">/ compiler option.
The <tt/#pragma/ understands the push and pop parameters as explained above.
<sect1><tt>#pragma rodataseg ([push,]&lt;name&gt;)</tt><p>
This pragma changes the name used for the RODATA segment (the RODATA
segment is used to store readonly data). The argument is a string
@ -833,7 +862,7 @@ parameter with the <tt/#pragma/.
The <tt/#pragma/ understands the push and pop parameters as explained above.
<sect1><tt>#pragma signedchars (on|off)</tt><label id="pragma-signedchars"><p>
<sect1><tt>#pragma signedchars ([push,]on|off)</tt><label id="pragma-signedchars"><p>
Changes the signedness of the default character type. If the argument is
"on", default characters are signed, otherwise characters are unsigned.
@ -844,7 +873,7 @@ parameter with the <tt/#pragma/.
The <tt/#pragma/ understands the push and pop parameters as explained above.
<sect1><tt>#pragma staticlocals (on|off)</tt><label id="pragma-staticlocals"<p>
<sect1><tt>#pragma staticlocals ([push,]on|off)</tt><label id="pragma-staticlocals"<p>
Use variables in the bss segment instead of variables on the stack. This
pragma changes the default set by the compiler option <tt/-Cl/. If the
@ -854,6 +883,15 @@ parameter with the <tt/#pragma/.
The <tt/#pragma/ understands the push and pop parameters as explained above.
<sect1><tt>#pragma warn ([push,]on|off)</tt><label id="pragma-warn"><p>
Switch compiler warnings on or off. If the argument is "off", warnings are
disabled, otherwise they're enabled. The default is "on", but may be changed
with the <tt/<ref name="-W" id="option-W">/ compiler option.
The <tt/#pragma/ understands the push and pop parameters as explained above.
<sect1><tt>#pragma zpsym (&lt;name&gt;)</tt><p>
Tell the compiler that the - previously as external declared - symbol with