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authorJens Arnold <amiconn@rockbox.org>2009-03-02 00:16:44 +0000
committerJens Arnold <amiconn@rockbox.org>2009-03-02 00:16:44 +0000
commitc21e2e686fce7a7df5a933fd3bf06aa20e66c78b (patch)
tree483500a54064c878fd12196ca7fd1fad1177c064 /tools
parentce1c189d509b1b88044f9821fa36f2461af07219 (diff)
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Calculate the optimal memory location for overlay plugins, and use plugin.lds for linking them. This gets rid of hand-adjusted archos.lds, making it easy to use overlay plugins on other lowmem targets. * Fix some duplicate and incorrect dependencies. * Change the way libs are filtered, so that a lib can be specified more than once. This allows to get rid of explicitly linking gcc-support.o, fixing empty plugins on some simulator platforms.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20163 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'tools')
-rw-r--r--tools/ovl_offset.pl31
1 files changed, 31 insertions, 0 deletions
diff --git a/tools/ovl_offset.pl b/tools/ovl_offset.pl
new file mode 100644
index 0000000000..89c3468556
--- /dev/null
+++ b/tools/ovl_offset.pl
@@ -0,0 +1,31 @@
+#!/usr/bin/perl
+
+# Calculate the highest possible location for an overlay based
+# on a reference map file (.refmap)
+
+sub map_scan {
+ my ($map) = @_;
+ my $ramstart = -1, $ramsize = -1, $startaddr = -1, $endaddr = -1;
+ open (MAP, "<$map");
+ while (<MAP>) {
+ if ($_ =~ /^PLUGIN_RAM +0x([0-9a-f]+) +0x([0-9a-f]+)$/) {
+ $ramstart = hex($1);
+ $ramsize = hex($2);
+ }
+ elsif ($_ =~ / +0x([0-9a-f]+) +_?plugin_start_addr = ./) {
+ $startaddr = hex($1);
+ }
+ elsif ($_ =~ / +0x([0-9a-f]+) +_?plugin_end_addr = ./) {
+ $endaddr = hex($1);
+ }
+ }
+ close (MAP);
+ if ($ramstart < 0 || $ramsize < 0 || $startaddr < 0 || $endaddr < 0
+ || $ramstart != $startaddr) {
+ printf "Could not analyze map file.\n";
+ exit 1;
+ }
+ return $ramstart + $ramsize - $endaddr;
+}
+
+printf map_scan($ARGV[0]) & ~0xf;