reg_zero
int reg_zero = FIELD_GET(EX_DATA_REG_ZERO, ex->data);
pt_regs_write_reg(regs, reg_zero, 0);
int reg_zero = FIELD_GET(EX_DATA_REG_ZERO, ex->data);
regs_set_gpr(regs, reg_zero * sizeof(unsigned long), 0);
int reg_zero = FIELD_GET(EX_DATA_REG_ZERO, ex->data);
regs_set_gpr(regs, reg_zero * sizeof(unsigned long), 0);
unsigned int reg_zero = FIELD_GET(EX_DATA_REG_ADDR, ex->data);
regs->gprs[reg_zero] = 0;
regs->gprs[reg_zero + 1] = 0;
config.volatile_reg = reg_zero;
config.writeable_noinc_reg = reg_zero;
config.readable_noinc_reg = reg_zero;