From af6ae8b8ddb03ed821ba0f63b4c5385fc393807b Mon Sep 17 00:00:00 2001
From: Eric Wild <ewild@sysmocom.de>
Date: Wed, 20 Oct 2021 16:42:28 +0200
Subject: [PATCH] drop unused exidx sections when linking

clang might emit those even though they are neither needed or wanted,
so just get rid of them.

Change-Id: I159b4405cebe72af4d98b27f876c48835ffd6e2d
---
 firmware/libboard/common/resources/sam3s4/dfu.ld   | 9 +++------
 firmware/libboard/common/resources/sam3s4/flash.ld | 9 +++------
 2 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/firmware/libboard/common/resources/sam3s4/dfu.ld b/firmware/libboard/common/resources/sam3s4/dfu.ld
index a485770f..db747fad 100644
--- a/firmware/libboard/common/resources/sam3s4/dfu.ld
+++ b/firmware/libboard/common/resources/sam3s4/dfu.ld
@@ -96,13 +96,10 @@ SECTIONS
         _efixed = .;            /* End of text section */
     } > rom
 
-    /* .ARM.exidx is sorted, so has to go in its own output section.  */
-    PROVIDE_HIDDEN (__exidx_start = .);
-    .ARM.exidx :
+    /DISCARD/ :
     {
-      *(.ARM.exidx* .gnu.linkonce.armexidx.*)
-    } > rom
-    PROVIDE_HIDDEN (__exidx_end = .);
+        *(.ARM.exidx)
+    }
 
     . = ALIGN(4); 
     _etext = .;
diff --git a/firmware/libboard/common/resources/sam3s4/flash.ld b/firmware/libboard/common/resources/sam3s4/flash.ld
index f5cdbfda..50631c61 100644
--- a/firmware/libboard/common/resources/sam3s4/flash.ld
+++ b/firmware/libboard/common/resources/sam3s4/flash.ld
@@ -94,13 +94,10 @@ SECTIONS
         _efixed = .;            /* End of text section */
     } > rom
 
-    /* .ARM.exidx is sorted, so has to go in its own output section.  */
-    PROVIDE_HIDDEN (__exidx_start = .);
-    .ARM.exidx :
+    /DISCARD/ :
     {
-      *(.ARM.exidx* .gnu.linkonce.armexidx.*)
-    } > rom
-    PROVIDE_HIDDEN (__exidx_end = .);
+        *(.ARM.exidx)
+    }
 
     . = ALIGN(4); 
     _etext = .;