sandbox: Rename getopt sections

Rename the sections used for defining sandbox command line options 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@google.com>

diff --git a/arch/sandbox/cpu/u-boot-spl.lds b/arch/sandbox/cpu/u-boot-spl.lds
index 206e265..6b300bc 100644 (file)
--- a/arch/sandbox/cpu/u-boot-spl.lds
+++ b/arch/sandbox/cpu/u-boot-spl.lds
@@ -22,9 +22,9 @@ SECTIONS
        }
 
        _u_boot_sandbox_getopt : {
-               *(.u_boot_sandbox_getopt_start)
-               KEEP(*(.u_boot_sandbox_getopt))
-               *(.u_boot_sandbox_getopt_end)
+               *(_u_boot_sandbox_getopt_start)
+               KEEP(*(_u_boot_sandbox_getopt))
+               *(_u_boot_sandbox_getopt_end)
        }
 }
 

diff --git a/arch/sandbox/cpu/u-boot.lds b/arch/sandbox/cpu/u-boot.lds
index d2cb12f..1f89a33 100644 (file)
--- a/arch/sandbox/cpu/u-boot.lds
+++ b/arch/sandbox/cpu/u-boot.lds
@@ -14,9 +14,9 @@ SECTIONS
        }
 
        _u_boot_sandbox_getopt : {
-               *(.u_boot_sandbox_getopt_start)
-               *(.u_boot_sandbox_getopt)
-               *(.u_boot_sandbox_getopt_end)
+               *(_u_boot_sandbox_getopt_start)
+               *(_u_boot_sandbox_getopt)
+               *(_u_boot_sandbox_getopt_end)
        }
 
        efi_runtime_start : {

diff --git a/arch/sandbox/include/asm/getopt.h b/arch/sandbox/include/asm/getopt.h
index d2145ad..df30572 100644 (file)
--- a/arch/sandbox/include/asm/getopt.h
+++ b/arch/sandbox/include/asm/getopt.h
@@ -44,7 +44,7 @@ struct sandbox_cmdline_option {
                .callback = sandbox_cmdline_cb_##f, \
        }; \
        /* Ppointer to the struct in a special section for the linker script */ \
-       static __used __section(".u_boot_sandbox_getopt") \
+       static __used __section("_u_boot_sandbox_getopt") \
                struct sandbox_cmdline_option \
                        *sandbox_cmdline_option_##f##_ptr = \
                        &sandbox_cmdline_option_##f

diff --git a/arch/sandbox/include/asm/sections.h b/arch/sandbox/include/asm/sections.h
index f4351ae..88837bb 100644 (file)
--- a/arch/sandbox/include/asm/sections.h
+++ b/arch/sandbox/include/asm/sections.h
@@ -17,7 +17,7 @@ static inline struct sandbox_cmdline_option **
 __u_boot_sandbox_option_start(void)
 {
        static char start[0] __aligned(4) __attribute__((unused))
-               __section(".u_boot_sandbox_getopt_start");
+               __section("_u_boot_sandbox_getopt_start");
 
        return (struct sandbox_cmdline_option **)&start;
 }
@@ -26,7 +26,7 @@ static inline struct sandbox_cmdline_option **
 __u_boot_sandbox_option_end(void)
 {
        static char end[0] __aligned(4) __attribute__((unused))
-               __section(".u_boot_sandbox_getopt_end");
+               __section("_u_boot_sandbox_getopt_end");
 
        return (struct sandbox_cmdline_option **)&end;
 }