[PATCH v3 02/13] sandbox: Rename EFI runtime sections

[Andrew Scull]

Rename the sections used for placing the EFI runtime so that they don't
start with a '.'. ELF says that sections starting with a '.' are
reserved for system use, but the sandbox runs as a normal user process
so should be using user sections instead.

Clang's ASAN adds redzones to non-user sections and the extra padding
meant that the list of options was being corrupted. Naming the sections
as user sections avoids this issue as clang handles them as we intended.

Signed-off-by: Andrew Scull <ascull at google.com>
---
 arch/sandbox/cpu/u-boot.lds | 22 ++++++++++------------
 arch/sandbox/lib/sections.c |  8 ++++----
 2 files changed, 14 insertions(+), 16 deletions(-)

diff --git a/arch/sandbox/cpu/u-boot.lds b/arch/sandbox/cpu/u-boot.lds
index 92e834a8d2..d2cb12fc29 100644
--- a/arch/sandbox/cpu/u-boot.lds
+++ b/arch/sandbox/cpu/u-boot.lds
@@ -19,32 +19,30 @@ SECTIONS
 		*(.u_boot_sandbox_getopt_end)
 	}
 
-	.__efi_runtime_start : {
-		*(.__efi_runtime_start)
+	efi_runtime_start : {
+		*(___efi_runtime_start)
 	}
 
-	.efi_runtime : {
+	efi_runtime : {
 		*(efi_runtime_text)
 		*(efi_runtime_data)
 	}
 
-	.__efi_runtime_stop : {
-		*(.__efi_runtime_stop)
+	efi_runtime_stop : {
+		*(___efi_runtime_stop)
 	}
 
-	.efi_runtime_rel_start :
-	{
-		*(.__efi_runtime_rel_start)
+	efi_runtime_rel_start : {
+		*(___efi_runtime_rel_start)
 	}
 
-	.efi_runtime_rel : {
+	efi_runtime_rel : {
 		*(.relefi_runtime_text)
 		*(.relefi_runtime_data)
 	}
 
-	.efi_runtime_rel_stop :
-	{
-		*(.__efi_runtime_rel_stop)
+	efi_runtime_rel_stop : {
+		*(___efi_runtime_rel_stop)
 	}
 
 	.dynsym :
diff --git a/arch/sandbox/lib/sections.c b/arch/sandbox/lib/sections.c
index 2559eeea38..2f2f3fbfdb 100644
--- a/arch/sandbox/lib/sections.c
+++ b/arch/sandbox/lib/sections.c
@@ -5,9 +5,9 @@
  */
 #include <linux/compiler.h>
 
-char __efi_runtime_start[0] __section(".__efi_runtime_start");
-char __efi_runtime_stop[0] __section(".__efi_runtime_stop");
+char __efi_runtime_start[0] __section("___efi_runtime_start");
+char __efi_runtime_stop[0] __section("___efi_runtime_stop");
 char __efi_runtime_rel_start[0]
-		__section(".__efi_runtime_rel_start");
+		__section("___efi_runtime_rel_start");
 char __efi_runtime_rel_stop[0]
-		__section(".__efi_runtime_rel_stop");
+		__section("___efi_runtime_rel_stop");
-- 
2.36.1.124.g0e6072fb45-goog