[SOL] tweak linker script

Ensure that all read only sections end up in one segment, and everything else
in other segments.

Discard .eh_frame, .hash and .gnu.hash since they are unused.

Author: alessandrod

compiler/rustc_target/src/spec/sbf_base.rs

@@ -8,6 +8,7 @@ PHDRS
 {
   text PT_LOAD ;
   rodata PT_LOAD ;
+  data PT_LOAD ;
   dynamic PT_DYNAMIC ;
 }
 
@@ -18,6 +19,14 @@ SECTIONS
   .rodata : { *(.rodata*) } :rodata
   .data.rel.ro : { *(.data.rel.ro*) } :rodata
   .dynamic : { *(.dynamic) } :dynamic
+  .dynsym : { *(.dynsym) } :data
+  .dynstr : { *(.dynstr) } :data
+  .rel.dyn : { *(.rel.dyn) } :data
+  /DISCARD/ : {
+      *(.eh_frame*)
+      *(.gnu.hash*)
+      *(.hash*)
+    }
 }
 ";
     let mut lld_args = Vec::new();