w6l: purge dead elf branches; pin rx extent

cmd/w6l/dynout.c

@@ -376,7 +376,6 @@ l_emit_dyn_elf(Lnk *l, FILE *f, u64 base, u64 entry)
 	const u64 gotplt_va  = base + gotplt_off;
 	const u64 dynamic_va = base + dynamic_off;
 	const u64 data_va    = base + data_off;
-	(void)dynstr_va; (void)hash_va; (void)plt_va;
 
 	/* Now that the dyn layout pins text_va/data_va, apply
 	 * relocations. main.c defers this; the static path runs it from
@@ -587,6 +586,8 @@ l_emit_dyn_elf(Lnk *l, FILE *f, u64 base, u64 entry)
 	ph[0].p_vaddr  = base;
 	ph[0].p_paddr  = base;
 	ph[0].p_filesz = rx_end;
+	/* The loader page-rounds mappings; gotplt_off independently starts
+	 * the next page, so padding is not part of the R+X extent. */
 	ph[0].p_memsz  = rx_end;
 	ph[0].p_align  = page;