BaseTools/tools_def ARM: Disable stack protector with CLANGDWARF

Clang insists on emitting a movt/movw pair into the function pro/epilogues to load the stack protector reference value from memory, and this movt/movw pair may turn out non-consecutively in the instruction stream. The resulting symbol reference cannot be fixed up by GenFw, as PE/COFF always treats movt/movw as a pair, and the ELF-to-PE conversion will therefore fail. Just disable the stack protector when using CLANGDWARF. Signed-off-by: Ard Biesheuvel <[email protected]>
coreboot · Sep 18, 2024 · 170fa8e · 170fa8e
1 parent 7796422
commit 170fa8e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/BaseTools/Conf/tools_def.template b/BaseTools/Conf/tools_def.template
@@ -2096,7 +2096,7 @@ NOOPT_CLANGDWARF_X64_DLINK2_FLAGS     = DEF(CLANGDWARF_X64_DLINK2_FLAGS) -O0 -fu
 # CLANGDWARF ARM definitions
 ##################
 DEFINE CLANGDWARF_ARM_TARGET        = -target arm-linux-gnueabi
-DEFINE CLANGDWARF_ARM_CC_FLAGS      = DEF(GCC_ARM_CC_FLAGS) DEF(CLANGDWARF_ARM_TARGET) DEF(CLANGDWARF_WARNING_OVERRIDES) -mno-movt
+DEFINE CLANGDWARF_ARM_CC_FLAGS      = DEF(GCC_ARM_CC_FLAGS) DEF(CLANGDWARF_ARM_TARGET) DEF(CLANGDWARF_WARNING_OVERRIDES) -mno-movt -fno-stack-protector
 DEFINE CLANGDWARF_ARM_DLINK_FLAGS   = DEF(CLANGDWARF_ARM_TARGET) DEF(GCC_ARM_DLINK_FLAGS)
 
 *_CLANGDWARF_ARM_PP_FLAGS           = DEF(GCC_PP_FLAGS)