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| 1 : | anton | 1.1 | /* |
| 2 : | anton | 1.5 | $Id: sparc.h,v 1.4 1994/12/14 16:15:33 anton Exp $ |
| 3 : | anton | 1.1 | Copyright 1992 by the ANSI figForth Development Group |
| 4 : | |||
| 5 : | anton | 1.3 | This is the machine-specific part for a SPARC |
| 6 : | anton | 1.1 | */ |
| 7 : | anton | 1.5 | |
| 8 : | #include "32bit.h" | ||
| 9 : | anton | 1.4 | |
| 10 : | #if !defined(USE_TOS) && !defined(USE_NO_TOS) | ||
| 11 : | #define USE_TOS | ||
| 12 : | #endif | ||
| 13 : | anton | 1.1 | |
| 14 : | anton | 1.3 | /* direct threading is probably faster on the SPARC, but has it been |
| 15 : | tested? Therefore, DIRECT_THREADED is not defined */ | ||
| 16 : | anton | 1.1 | |
| 17 : | #ifdef DIRECT_THREADED | ||
| 18 : | /* PFA gives the parameter field address corresponding to a cfa */ | ||
| 19 : | #define PFA(cfa) (((Cell *)cfa)+2) | ||
| 20 : | /* PFA1 is a special version for use just after a NEXT1 */ | ||
| 21 : | /* the improvement here is that we may destroy cfa before using PFA1 */ | ||
| 22 : | #define PFA1(cfa) /* PFA(cfa) */ \ | ||
| 23 : | ({register Cell *pfa asm("%15"); \ | ||
| 24 : | pfa+2; }) | ||
| 25 : | /* CODE_ADDRESS is the address of the code jumped to through the code field */ | ||
| 26 : | #define CODE_ADDRESS(cfa) ((Label)((*(unsigned *)(cfa))<<2)) | ||
| 27 : | /* MAKE_CF creates an appropriate code field at the cfa; ca is the code address */ | ||
| 28 : | /* we use call, since 'branch always' only has 22 bits displacement */ | ||
| 29 : | #define MAKE_CF(cfa,ca) ({long *_cfa = (long *)(cfa); \ | ||
| 30 : | unsigned _ca = (unsigned)(ca); \ | ||
| 31 : | _cfa[0] = 0x8000000|((_ca+4-(unsigned)_cfa)>>2) /* CALL ca */ \ | ||
| 32 : | _cfa[1] = *(long *)_ca; /* delay slot */}) | ||
| 33 : | |||
| 34 : | /* this is the point where the does code starts if label points to the | ||
| 35 : | * jump dodoes */ | ||
| 36 : | #define DOES_CODE(label) (((Xt *)(label))+2) | ||
| 37 : | |||
| 38 : | /* this is a special version of DOES_CODE for use in dodoes */ | ||
| 39 : | #define DOES_CODE1(label) ({register Xt *_does_code asm("%15"); \ | ||
| 40 : | _does_code+2; }) | ||
| 41 : | |||
| 42 : | /* this stores a call dodoes at addr */ | ||
| 43 : | #define MAKE_DOESJUMP(addr) ({long *_addr = (long *)(addr); \ | ||
| 44 : | _addr[0] = 0x8000000|((((unsigned)&&dodoes)+4-((unsigned)_addr))>>2) /* CALL dodoes */ \ | ||
| 45 : | _addr[1] = *(long *)&&dodoes; /* delay slot */}) | ||
| 46 : | anton | 1.3 | #endif |
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