#if defined LISP_FEATURE_DARWIN
#if defined LANGUAGE_ASSEMBLY
#define REG(num) r##num
#define FREG(num) f##num
#else
#define REG(num) num
#define FREG(num) num
#endif
#else
#define REG(num) num
#define FREG(num) num
#endif

#define NREGS 32

#define reg_ZERO      REG(0)    /* Should always contain 0 in lisp */
#define reg_NSP       REG(1)    /* The number/C stack pointer */
#define reg_POLL      REG(2)    /* Lisp preemption/Mystery SVR4 ABI reg */
#define reg_NL0       REG(3)    /* FF param/result 1 */
#define reg_NL1       REG(4)    /* FF param/result 2 */
#define reg_NL2       REG(5)    /* FF param 3 */
#define reg_NL3       REG(6)
#define reg_NL4       REG(7)
#define reg_NL5       REG(8)
#define reg_NL6       REG(9)    /* Last (7th) FF param */
#define reg_FDEFN     REG(10)   /* was NL7 until recently -dan */
#define reg_NARGS     REG(11)
#ifdef LISP_FEATURE_DARWIN
#define reg_CFUNC     REG(12)   /* Silly to blow a reg on FF-name */
#define reg_NFP       REG(13)   /* Lisp may save around FF-call */
#else
#define reg_NFP       REG(12)   /* Lisp may save around FF-call */
#define reg_CFUNC     REG(13)   /* Silly to blow a reg on FF-name */
#endif
#define reg_BSP       REG(14)   /* Binding stack pointer */
#define reg_CFP       REG(15)   /* Control/value stack frame pointer */
#define reg_CSP       REG(16)   /* Control/value stack top */
#define reg_ALLOC     REG(17)   /* (Global) dynamic free pointer */
#define reg_NULL      REG(18)   /* NIL and globals nearby */
#define reg_CODE      REG(19)   /* Current function object */
#define reg_CNAME     REG(20)   /* Current function name */
#define reg_LEXENV    REG(21)   /* And why burn a register for this ? */
#define reg_OCFP      REG(22)   /* The caller's reg_CFP */
#define reg_LRA       REG(23)   /* Tagged lisp return address */
#define reg_A0        REG(24)   /* First function arg/return value */
#define reg_A1        REG(25)   /* Second. */
#define reg_A2        REG(26)   /*  */
#define reg_A3        REG(27)   /* Last of (only) 4 arg regs */
#define reg_L0        REG(28)   /* Tagged temp regs */
#define reg_L1        REG(29)
#define reg_L2        REG(30)   /* Last lisp temp reg */
#define reg_LIP       REG(31)   /* Lisp Interior Pointer, e.g., locative */

#define REGNAMES \
        "ZERO",         "NSP",          "???",          "NL0", \
        "NL1",          "NL2",          "NL3P",         "NL4", \
        "NL5",          "NL6",          "FDEFN",        "NARGS", \
        "NFP",          "CFUNC",        "BSP",          "CFP", \
        "CSP",          "ALLOC",        "NULL",         "CODE", \
        "CNAME",        "LEXENV",       "OCFP",         "LRA", \
        "A0",           "A1",           "A2",           "A3", \
        "L0",           "L1",           "L2",           "LIP"

#define BOXED_REGISTERS { \
    reg_FDEFN, reg_CODE, reg_CNAME, reg_LEXENV, reg_OCFP, reg_LRA, \
    reg_A0, reg_A1, reg_A2, reg_A3, \
    reg_L0, reg_L1, reg_L2 \
}