From 8bdb40a69cbfd32e05d82d5faf209c76eb80c7c0 Mon Sep 17 00:00:00 2001
From: Alexander Reim <alexander@areim.de>
Date: Mon, 19 Oct 2020 11:21:22 +0200
Subject: [PATCH] WII: Update linkscript and fix for linker false error message

---
 backends/plugins/wii/plugin.ld | 31 ++++++++++++++++++++++++++-----
 1 file changed, 26 insertions(+), 5 deletions(-)

diff --git a/backends/plugins/wii/plugin.ld b/backends/plugins/wii/plugin.ld
index 61b90d33946..b64fef7f819 100644
--- a/backends/plugins/wii/plugin.ld
+++ b/backends/plugins/wii/plugin.ld
@@ -4,6 +4,8 @@
 
 OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc");
 OUTPUT_ARCH(powerpc:common);
+EXTERN(_start);
+ENTRY(_start);
 
 PHDRS
 {
@@ -12,14 +14,26 @@ PHDRS
 
 SECTIONS
 {
-	. = 0x81000000;
+	/* stub is loaded at physical address 0x00003400 (though both 0x80003400 and 0x00003400 are equivalent for IOS) */
+	/* This can also be used to load an arbitrary standalone stub at an arbitrary address in memory, for any purpose */
+	/* Use -Wl,--section-start,.stub=0xADDRESS to change */
+	. = 0x00003400;
+
+	.stub :
+	{
+		KEEP(*(.stub))
+	} :plugin = 0
+
+	/* default base address */
+	/* use -Wl,--section-start,.init=0xADDRESS to change */
+	. = 0x80004000;
 
 	/* Program */
 	.init          :
 	{
 		KEEP (*crt0.o(*.init))
 		KEEP (*(.init))
-	} :plugin = 0
+	} = 0
 	.plt      : { *(.plt)	}
 	.interp			: { *(.interp) 	}
 	.hash			: { *(.hash) }
@@ -85,7 +99,12 @@ SECTIONS
 
 	.rodata   : { *(.rodata) *(.rodata.*) *(.gnu.linkonce.r.*) }
 	.rodata1   : { *(.rodata1) }
-	.sdata2   : { *(.sdata2) *(.sdata2.*) *(.gnu.linkonce.s2.*) }
+	.sdata2   : {
+		PROVIDE(_SDA2_BASE_ = .);
+		*(.sdata2)
+		*(.sdata2.*)
+		*(.gnu.linkonce.s2.*)
+	}
 	.sbss2   : { *(.sbss2) *(.sbss2.*) *(.gnu.linkonce.sb2.*) }
   /* Adjust the address for the data segment.  We want to adjust up to
      the same address within the page on the next page up.  */
@@ -128,6 +147,7 @@ SECTIONS
 		KEEP (*(SORT(.ctors.*)))
 		KEEP (*(.ctors))
 		___plugin_ctors_end = .;
+		. += 10;   /* fix for linker false error message */
 		. = ALIGN(32);   /* REQUIRED. LD is flaky without it. */
 	}
 
@@ -150,6 +170,7 @@ SECTIONS
 
 	.sdata     :
 	{
+		PROVIDE(_SDA_BASE_ = .);
 		*(.sdata)
 		*(.sdata.*)
 		*(.gnu.linkonce.s.*)
@@ -238,7 +259,7 @@ __stack_end = (__bss_start + SIZEOF(.bss));
 __intrstack_addr = (__stack_addr + 0x4000);
 __intrstack_end = (__stack_addr);
 __Arena1Lo = (__intrstack_addr + 31) & (-32);
-__Arena1Hi = (0x816ffff0);
+__Arena1Hi = (0x817FEFF0);
 __Arena2Lo = (0x90002000);
 __Arena2Hi = (0x933E0000);
 
@@ -247,7 +268,7 @@ __ipcbufferLo = (0x933e0000);
 __ipcbufferHi = (0x93400000);
 
 /* for backward compatibility with old crt0 */
-PROVIDE (__stack = (0x816ffff0));
+PROVIDE (__stack = (0x817FEFF0));
 
 PROVIDE(__isIPL = __isIPL);
 PROVIDE(__stack_addr = __stack_addr);