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doc: clarify need for .IMPORT on some special symbols

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Jeremy Chadwick
2019-08-23 23:36:43 -07:00
committed by greg-king5
parent 3d63a8bb62
commit cc373cc41d
1 changed files with 4 additions and 2 deletions
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doc/ld65.sgml
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@@ -562,7 +562,8 @@ segment, where this attribute is true, the linker will export three symbols.
</verb></tscreen> </verb></tscreen>
Replace <tt/NAME/ by the name of the segment, in the example above, this would Replace <tt/NAME/ by the name of the segment, in the example above, this would
be <tt/BSS/. These symbols may be accessed by your code. be <tt/BSS/. These symbols may be accessed by your code once the symbol has
been imported using the <tt>.IMPORT</tt> directive.
Now, as we've configured the linker to write the first three segments and Now, as we've configured the linker to write the first three segments and
create symbols for the last one, there's only one question left: Where does create symbols for the last one, there's only one question left: Where does
@@ -766,7 +767,8 @@ useful for things like a software stack, or an I/O area.
} }
</verb></tscreen> </verb></tscreen>
This will define some external symbols that may be used in your code: This will define some external symbols that may be used in your code once
the symbol has imported using the <tt>.IMPORT</tt> directive:
<tscreen><verb> <tscreen><verb>
__STACK_START__ This is set to the start of the memory __STACK_START__ This is set to the start of the memory