All symbols starting with `x' in EXTERNAL_HEADERS/architecture/ppc

• xer_t EXTERNAL_HEADERS/architecture/ppc/basic_regs.h:198
• X_HANDLER EXTERNAL_HEADERS/architecture/ppc/asm_help.h:302
• X_LEAF EXTERNAL_HEADERS/architecture/ppc/asm_help.h:242
• X_NESTED EXTERNAL_HEADERS/architecture/ppc/asm_help.h:276