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| 1 : | anton | 1.1 | /* |
| 2 : | $Id: hppa.h,v 1.1 1993/04/08 15:31:36 pazsan Exp $ | ||
| 3 : | Copyright 1992 by the ANSI figForth Development Group | ||
| 4 : | |||
| 5 : | This is the machine-specific part for a HPPA running HP-UX | ||
| 6 : | */ | ||
| 7 : | |||
| 8 : | |||
| 9 : | /* Cell and UCell must be the same size as a pointer */ | ||
| 10 : | typedef long Cell; | ||
| 11 : | typedef unsigned long UCell; | ||
| 12 : | |||
| 13 : | /* DCell and UDCell must be twice as large as Cell */ | ||
| 14 : | typedef long long DCell; | ||
| 15 : | typedef unsigned long long UDCell; | ||
| 16 : | |||
| 17 : | /* define this if IEEE singles and doubles are available as C data types */ | ||
| 18 : | #define IEEE_FP | ||
| 19 : | |||
| 20 : | /* the IEEE types are used only for loading and storing */ | ||
| 21 : | /* the IEEE double precision type */ | ||
| 22 : | typedef double DFloat; | ||
| 23 : | /* the IEEE single precision type */ | ||
| 24 : | typedef float SFloat; | ||
| 25 : | |||
| 26 : | /* define this if the least-significant byte is at the largets address */ | ||
| 27 : | #define BIG_ENDIAN | ||
| 28 : | |||
| 29 : | #ifdef DIRECT_THREADED | ||
| 30 : | /* PFA gives the parameter field address corresponding to a cfa */ | ||
| 31 : | # define PFA(cfa) (((Cell *)cfa)+2) | ||
| 32 : | /* PFA1 is a special version for use just after a NEXT1 */ | ||
| 33 : | /* the improvement here is that we may destroy cfa before using PFA1 */ | ||
| 34 : | # define PFA1(cfa) /* PFA(cfa) */ \ | ||
| 35 : | ({register volatile Cell *pfa asm("%31"); \ | ||
| 36 : | ((int)pfa & (-4)); }) | ||
| 37 : | /* HPPA uses register 2 for branch and link */ | ||
| 38 : | |||
| 39 : | /* CODE_ADDRESS is the address of the code jumped to through the code field */ | ||
| 40 : | # define CODE_ADDRESS(cfa) ((Label)((*(unsigned *)(cfa))/* <<2 */)) | ||
| 41 : | /* MAKE_CF creates an appropriate code field at the cfa; ca is the code address */ | ||
| 42 : | /* we use ble and a register, since 'bl' only has 21 bits displacement */ | ||
| 43 : | #endif | ||
| 44 : | #define MAKE_CFA(cfa,ca) ({long *_cfa = (long *)(cfa); \ | ||
| 45 : | unsigned _ca = (unsigned)(ca); \ | ||
| 46 : | _cfa[0] = 0xE4A02000 | ((_ca+4-symbols[0]) & 0x7FC)<<1 ; \ | ||
| 47 : | _cfa[1] = *(long *)(_ca); \ | ||
| 48 : | /* printf("%08x:%08x,%08x\n",_cfa,_cfa[0],_cfa[1]); */ \ | ||
| 49 : | }) | ||
| 50 : | |||
| 51 : | #ifdef DIRECT_THREADED | ||
| 52 : | # define MAKE_CF(cfa,ca) MAKE_CFA(cfa,ca) | ||
| 53 : | /* | ||
| 54 : | #define MAKE_CF(cfa,ca) ({long *_cfa = (long *)(cfa); \ | ||
| 55 : | unsigned _ca = (unsigned)(ca); \ | ||
| 56 : | if((_ca-(int)(_cfa+1)>=-0x40000)||(_ca-(int)(_cfa+1)<0x40000)) \ | ||
| 57 : | { \ | ||
| 58 : | _cfa[1] = *(long *)(_ca); \ | ||
| 59 : | _ca = _ca-(int)(_cfa+1); \ | ||
| 60 : | _cfa[0] = 0xEBE00000 | \ | ||
| 61 : | ((int)_ca<0) | \ | ||
| 62 : | (_ca & 0x00FFC)<<1 | \ | ||
| 63 : | (_ca & 0x01000)>>10 | \ | ||
| 64 : | (_ca & 0x3E000)<<3; \ | ||
| 65 : | } \ | ||
| 66 : | else \ | ||
| 67 : | { \ | ||
| 68 : | _cfa[0] = 0x20200000 | \ | ||
| 69 : | ((int)_ca<0) | \ | ||
| 70 : | (_ca & 0x00001800)<<1 | \ | ||
| 71 : | (_ca & 0x0003E000)<<3 | \ | ||
| 72 : | (_ca & 0x000C0000)>>4 | \ | ||
| 73 : | (_ca & 0x7FF00000)>>19 \ | ||
| 74 : | _cfa[1] = 0xE4202002 | (_ca & 0x7FC)<<1 ; \ | ||
| 75 : | }}) | ||
| 76 : | */ | ||
| 77 : | /* HP wins the price for the most obfuscated binary opcode */ | ||
| 78 : | |||
| 79 : | /* this is the point where the does code starts if label points to the | ||
| 80 : | * jump dodoes */ | ||
| 81 : | |||
| 82 : | # define DOES_CODE(label) (((Xt *)(label))+2) | ||
| 83 : | |||
| 84 : | /* this is a special version of DOES_CODE for use in dodoes */ | ||
| 85 : | # define DOES_CODE1(label) ({register volatile Xt *_does_code asm("%31"); \ | ||
| 86 : | (Xt *)((int)_does_code & (-4)); }) | ||
| 87 : | /* HPPA uses register 2 for branch and link */ | ||
| 88 : | |||
| 89 : | /* this stores a call dodoes at addr */ | ||
| 90 : | # define MAKE_DOESJUMP(addr) MAKE_CFA((addr),symbols[3]) | ||
| 91 : | #endif | ||
| 92 : | |||
| 93 : | /* OS dependences */ | ||
| 94 : | |||
| 95 : | #define SEEK_SET 0 | ||
| 96 : | #define rint(x) floor((x)+0.5) | ||
| 97 : | |||
| 98 : | #ifdef DIRECT_THREADED | ||
| 99 : | # define CPU_DEP register Label branchto asm("%5")=symbols[0]; | ||
| 100 : | # define CPU_DEP2 &&deadcode | ||
| 101 : | # define CPU_DEP3 deadcode: return((Label *)branchto); | ||
| 102 : | #endif |
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