/* * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #include #include #include #include /* * cpusubtype_findbestarch() is passed a cputype and cpusubtype and a set of * fat_arch structs and selects the best one that matches (if any) and returns * a pointer to that fat_arch struct (or NULL). The fat_arch structs must be * in the host byte sex and correct such that the fat_archs really points to * enough memory for nfat_arch structs. It is possible that this routine could * fail if new cputypes or cpusubtypes are added and an old version of this * routine is used. But if there is an exact match between the cputype and * cpusubtype and one of the fat_arch structs this routine will always succeed. */ __private_extern__ struct fat_arch * cpusubtype_findbestarch( cpu_type_t cputype, cpu_subtype_t cpusubtype, struct fat_arch *fat_archs, unsigned long nfat_archs) { unsigned long i; long lowest_family, lowest_model, lowest_index; /* * Look for the first exact match. */ for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype == cputype && fat_archs[i].cpusubtype == cpusubtype) return(fat_archs + i); } /* * An exact match was not found so find the next best match which is * cputype dependent. */ switch(cputype){ case CPU_TYPE_I386: switch(cpusubtype){ default: /* * Intel cpusubtypes after the pentium (same as 586) are handled * such that they require an exact match or they can use the * pentium. If that is not found call into the loop for the * earilier subtypes. */ for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_PENT) return(fat_archs + i); } case CPU_SUBTYPE_PENT: case CPU_SUBTYPE_486SX: /* * Since an exact match as not found look for the i486 else * break into the loop to look for the i386_ALL. */ for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_486) return(fat_archs + i); } break; case CPU_SUBTYPE_I386_ALL: /* case CPU_SUBTYPE_I386: same as above */ case CPU_SUBTYPE_486: break; } for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_I386_ALL) return(fat_archs + i); } /* * A match failed, promote as little as possible. */ for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_486) return(fat_archs + i); } for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_486SX) return(fat_archs + i); } for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_586) return(fat_archs + i); } /* * Now look for the lowest family and in that the lowest model. */ lowest_family = CPU_SUBTYPE_INTEL_FAMILY_MAX + 1; for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(CPU_SUBTYPE_INTEL_FAMILY(fat_archs[i].cpusubtype) < lowest_family) lowest_family = CPU_SUBTYPE_INTEL_FAMILY( fat_archs[i].cpusubtype); } /* if no intel cputypes found return NULL */ if(lowest_family == CPU_SUBTYPE_INTEL_FAMILY_MAX + 1) return(NULL); lowest_model = ULONG_MAX; lowest_index = -1; for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(CPU_SUBTYPE_INTEL_FAMILY(fat_archs[i].cpusubtype) == lowest_family){ if(CPU_SUBTYPE_INTEL_MODEL(fat_archs[i].cpusubtype) < lowest_model){ lowest_model = CPU_SUBTYPE_INTEL_MODEL( fat_archs[i].cpusubtype); lowest_index = i; } } } return(fat_archs + lowest_index); case CPU_TYPE_MC680x0: for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_MC680x0_ALL) return(fat_archs + i); } /* * Try to promote if starting from CPU_SUBTYPE_MC680x0_ALL and * favor the CPU_SUBTYPE_MC68040 over the CPU_SUBTYPE_MC68030_ONLY. */ if(cpusubtype == CPU_SUBTYPE_MC680x0_ALL){ for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_MC68040) return(fat_archs + i); } for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_MC68030_ONLY) return(fat_archs + i); } } break; case CPU_TYPE_POWERPC: /* * An exact match as not found. So for all the PowerPC subtypes * pick the subtype from the following order starting from a subtype * that will work (contains altivec if needed): * 790, 7450, 7400, 750, 604e, 604, 603ev, 603e, 603, ALL * Note the 601 is NOT in the list above. It is only picked via * an exact match. For an unknown subtype pick only the ALL type if * it exists. */ switch(cpusubtype){ case CPU_SUBTYPE_POWERPC_970: case CPU_SUBTYPE_POWERPC_7450: case CPU_SUBTYPE_POWERPC_7400: for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_POWERPC_970) return(fat_archs + i); } for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_POWERPC_7450) return(fat_archs + i); } for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_POWERPC_7400) return(fat_archs + i); } case CPU_SUBTYPE_POWERPC_750: case CPU_SUBTYPE_POWERPC_604e: case CPU_SUBTYPE_POWERPC_604: case CPU_SUBTYPE_POWERPC_603ev: case CPU_SUBTYPE_POWERPC_603e: case CPU_SUBTYPE_POWERPC_603: for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_POWERPC_750) return(fat_archs + i); } for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_POWERPC_604e) return(fat_archs + i); } for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_POWERPC_604) return(fat_archs + i); } for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_POWERPC_603ev) return(fat_archs + i); } for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_POWERPC_603e) return(fat_archs + i); } for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_POWERPC_603) return(fat_archs + i); } default: for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_POWERPC_ALL) return(fat_archs + i); } } break; case CPU_TYPE_VEO: /* * An exact match was not found. So for the VEO subtypes if VEO1 * is wanted then VEO2 can be used. But if VEO2 is wanted only * VEO2 can be used. Any unknown values don't match. */ switch(cpusubtype){ case CPU_SUBTYPE_VEO_1: for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_VEO_2) return(fat_archs + i); } } break; case CPU_TYPE_MC88000: for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_MC88000_ALL) return(fat_archs + i); } break; case CPU_TYPE_I860: for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_I860_ALL) return(fat_archs + i); } break; case CPU_TYPE_HPPA: for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_HPPA_ALL) return(fat_archs + i); } break; case CPU_TYPE_SPARC: for(i = 0; i < nfat_archs; i++){ if(fat_archs[i].cputype != cputype) continue; if(fat_archs[i].cpusubtype == CPU_SUBTYPE_SPARC_ALL) return(fat_archs + i); } break; default: return(NULL); } return(NULL); } /* * cpusubtype_combine() returns the resulting cpusubtype when combining two * differnet cpusubtypes for the specified cputype. If the two cpusubtypes * can't be combined (the specific subtypes are mutually exclusive) -1 is * returned indicating it is an error to combine them. This can also fail and * return -1 if new cputypes or cpusubtypes are added and an old version of * this routine is used. But if the cpusubtypes are the same they can always * be combined and this routine will return the cpusubtype pass in. */ __private_extern__ cpu_subtype_t cpusubtype_combine( cpu_type_t cputype, cpu_subtype_t cpusubtype1, cpu_subtype_t cpusubtype2) { if(cpusubtype1 == cpusubtype2) return(cpusubtype1); switch(cputype){ case CPU_TYPE_I386: /* * For compatiblity with pre-Rhapsody CR1 systems the subtypes that * previously existed are handled the same as before. So going in * we know we don't have an exact match because of the test done * at the beginning of the routine. */ if((cpusubtype1 == CPU_SUBTYPE_I386_ALL || /* cpusubtype1 == CPU_SUBTYPE_386 || same as above */ cpusubtype1 == CPU_SUBTYPE_486 || cpusubtype1 == CPU_SUBTYPE_486SX || cpusubtype1 == CPU_SUBTYPE_586) && (cpusubtype2 == CPU_SUBTYPE_I386_ALL || /* cpusubtype2 == CPU_SUBTYPE_386 || same as above */ cpusubtype2 == CPU_SUBTYPE_486 || cpusubtype2 == CPU_SUBTYPE_486SX || cpusubtype2 == CPU_SUBTYPE_586)){ /* return the highest subtype of the two */ if(cpusubtype1 == CPU_SUBTYPE_586 || cpusubtype2 == CPU_SUBTYPE_586) return(CPU_SUBTYPE_586); if(cpusubtype1 == CPU_SUBTYPE_486SX || cpusubtype2 == CPU_SUBTYPE_486SX) return(CPU_SUBTYPE_486SX); if(cpusubtype1 == CPU_SUBTYPE_486 || cpusubtype2 == CPU_SUBTYPE_486) return(CPU_SUBTYPE_486); break; /* logically can't get here */ } /* * If either is a MODEL_ALL type select the one with the highest * family type. Note that only the old group of subtypes (ALL, 386, * 486, 486SX, 586) can ever have MODEL_ALL (a model number of * zero). Since the cases both subtypes being in the old group are * handled above this makes the the highest family type the one that * is not MODEL_ALL. */ if(CPU_SUBTYPE_INTEL_MODEL(cpusubtype1) == CPU_SUBTYPE_INTEL_MODEL_ALL) return(cpusubtype2); if(CPU_SUBTYPE_INTEL_MODEL(cpusubtype2) == CPU_SUBTYPE_INTEL_MODEL_ALL) return(cpusubtype1); /* * For all other families and models they must match exactly to * combine and since that test was done at the start of this routine * we know these do not match and do not combine. */ return((cpu_subtype_t)-1); break; /* logically can't get here */ case CPU_TYPE_MC680x0: if(cpusubtype1 != CPU_SUBTYPE_MC680x0_ALL && cpusubtype1 != CPU_SUBTYPE_MC68030_ONLY && cpusubtype1 != CPU_SUBTYPE_MC68040) return((cpu_subtype_t)-1); if(cpusubtype2 != CPU_SUBTYPE_MC680x0_ALL && cpusubtype2 != CPU_SUBTYPE_MC68030_ONLY && cpusubtype2 != CPU_SUBTYPE_MC68040) return((cpu_subtype_t)-1); if(cpusubtype1 == CPU_SUBTYPE_MC68030_ONLY && cpusubtype2 == CPU_SUBTYPE_MC68040) return((cpu_subtype_t)-1); if(cpusubtype1 == CPU_SUBTYPE_MC68040 && cpusubtype2 == CPU_SUBTYPE_MC68030_ONLY) return((cpu_subtype_t)-1); if(cpusubtype1 == CPU_SUBTYPE_MC68030_ONLY || cpusubtype2 == CPU_SUBTYPE_MC68030_ONLY) return(CPU_SUBTYPE_MC68030_ONLY); if(cpusubtype1 == CPU_SUBTYPE_MC68040 || cpusubtype2 == CPU_SUBTYPE_MC68040) return(CPU_SUBTYPE_MC68040); break; /* logically can't get here */ case CPU_TYPE_POWERPC: /* * Combining with the ALL type becomes the other type. Combining * anything with the 601 becomes 601. All other non exact matches * combine to the higher value subtype. */ if(cpusubtype1 == CPU_SUBTYPE_POWERPC_ALL) return(cpusubtype2); if(cpusubtype2 == CPU_SUBTYPE_POWERPC_ALL) return(cpusubtype1); if(cpusubtype1 == CPU_SUBTYPE_POWERPC_601 || cpusubtype2 == CPU_SUBTYPE_POWERPC_601) return(CPU_SUBTYPE_POWERPC_601); if(cpusubtype1 > cpusubtype2) return(cpusubtype1); else return(cpusubtype2); break; /* logically can't get here */ case CPU_TYPE_VEO: /* * Combining VEO1 with VEO2 returns VEO1. Any unknown values don't * combine. */ if(cpusubtype1 == CPU_SUBTYPE_VEO_1 && cpusubtype2 == CPU_SUBTYPE_VEO_2) return(CPU_SUBTYPE_VEO_1); if(cpusubtype1 == CPU_SUBTYPE_VEO_2 && cpusubtype2 == CPU_SUBTYPE_VEO_1) return(CPU_SUBTYPE_VEO_1); return((cpu_subtype_t)-1); break; /* logically can't get here */ case CPU_TYPE_MC88000: if(cpusubtype1 != CPU_SUBTYPE_MC88000_ALL && cpusubtype1 != CPU_SUBTYPE_MC88110) return((cpu_subtype_t)-1); if(cpusubtype2 != CPU_SUBTYPE_MC88000_ALL && cpusubtype2 != CPU_SUBTYPE_MC88110) return((cpu_subtype_t)-1); if(cpusubtype1 == CPU_SUBTYPE_MC88110 || cpusubtype2 == CPU_SUBTYPE_MC88110) return(CPU_SUBTYPE_MC88110); break; /* logically can't get here */ case CPU_TYPE_I860: if(cpusubtype1 != CPU_SUBTYPE_I860_ALL && cpusubtype1 != CPU_SUBTYPE_I860_860) return((cpu_subtype_t)-1); if(cpusubtype2 != CPU_SUBTYPE_I860_ALL && cpusubtype2 != CPU_SUBTYPE_I860_860) return((cpu_subtype_t)-1); if(cpusubtype1 == CPU_SUBTYPE_I860_860 || cpusubtype2 == CPU_SUBTYPE_I860_860) return(CPU_SUBTYPE_I860_860); break; /* logically can't get here */ case CPU_TYPE_HPPA: if(cpusubtype1 != CPU_SUBTYPE_HPPA_ALL && cpusubtype1 != CPU_SUBTYPE_HPPA_7100LC) return((cpu_subtype_t)-1); if(cpusubtype2 != CPU_SUBTYPE_HPPA_ALL && cpusubtype2 != CPU_SUBTYPE_HPPA_7100LC) return((cpu_subtype_t)-1); return(CPU_SUBTYPE_HPPA_7100LC); break; /* logically can't get here */ case CPU_TYPE_SPARC: if(cpusubtype1 != CPU_SUBTYPE_SPARC_ALL) return((cpu_subtype_t)-1); if(cpusubtype2 != CPU_SUBTYPE_SPARC_ALL) return((cpu_subtype_t)-1); break; /* logically can't get here */ default: return((cpu_subtype_t)-1); } return((cpu_subtype_t)-1); /* logically can't get here */ }