ref: f97139461c443f63ac837a1dc40133aaeeb13931
parent: 8207dc57b7e74303e3bec0ba82db1b41a08a66b2
author: Rangi <[email protected]>
date: Sun Aug 28 11:13:43 EDT 2022
Clarify the linkerscript example (#1028) * Clarify the linkerscript example * Explain that backslash escape sequences are supported Fixes #1006
--- a/man/rgblink.5
+++ b/man/rgblink.5
@@ -14,18 +14,22 @@
.Sh DESCRIPTION
The linker script is an external file that allows the user to specify the order of sections at link time and in a centralized manner.
.Pp
-A linker script consists on a series of banks followed by a list of sections and, optionally, commands.
-They can be lowercase or uppercase, it is ignored.
+A linker script consists of a series of bank declarations, each optionally followed by a list of section names (in double quotes) or commands.
+All reserved keywords (bank types and command names) are case-insensitive; all section names are case-sensitive.
+.Pp
Any line can contain a comment starting with
.Ql \&;
-that ends at the end of the line:
+that ends at the end of the line.
+.Pp
.Bd -literal -offset indent
-ROMX $F ; This is a comment
- "Functions to read array"
- ALIGN 8
- "Array aligned to 256 bytes"
+; This line is a comment
+ROMX $F ; start a bank
+ "Some functions" ; a section name
+ ALIGN 8 ; a command
+ "Some array"
-WRAMX 2
+WRAMX 2 ; start another bank
+ org $d123 ; another command
"Some variables"
.Ed
.Pp
@@ -46,6 +50,19 @@
and
.Cm WRAMX ,
it is needed to specify a bank number after the type.
+.Pp
+Section names in double quotes support the same character escape sequences as strings in
+.Xr rgbasm 5 ,
+specifically
+.Ql \[rs]\[rs] ,
+.Ql \[rs]" ,
+.Ql \[rs]n ,
+.Ql \[rs]r ,
+and
+.Ql \[rs]t .
+Other backslash escape sequences in
+.Xr rgbasm 5
+are only relevant to assembly code and do not apply in section names.
.Pp
When a new bank statement is found, sections found after it will be placed right from the beginning of that bank.
If the linker script switches to a different bank and then comes back to a previous one, it will continue from the last address that was used.