The NOP padding in the GCC linker scripts ensures that all empty regions in the ELF binary are filled with x86 NOP instructions.
There is no upside to doing this: if the CPU ends up executing these instructions, we have little hope of resuming normal execution of the program anyway. And having NOP slides in memory only makes it easier for attackers to launch exploits. So remove them. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org> --- BaseTools/Scripts/gcc4.4-ld-script | 2 +- BaseTools/Scripts/gcc4.9-ld-script | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/BaseTools/Scripts/gcc4.4-ld-script b/BaseTools/Scripts/gcc4.4-ld-script index 68b2767590ac..c0aa62180440 100644 --- a/BaseTools/Scripts/gcc4.4-ld-script +++ b/BaseTools/Scripts/gcc4.4-ld-script @@ -7,7 +7,7 @@ SECTIONS { *(.text .stub .text.* .gnu.linkonce.t.*) . = ALIGN(0x20); - } =0x90909090 + } .data ALIGN(0x20) : { *( diff --git a/BaseTools/Scripts/gcc4.9-ld-script b/BaseTools/Scripts/gcc4.9-ld-script index b69232853617..37a93cd85e94 100644 --- a/BaseTools/Scripts/gcc4.9-ld-script +++ b/BaseTools/Scripts/gcc4.9-ld-script @@ -7,7 +7,7 @@ SECTIONS { *(.text .stub .text.* .gnu.linkonce.t.*) . = ALIGN(0x20); - } =0x90909090 + } .data ALIGN(0x40) : { *( -- 1.9.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel