1 /* 2 * Copyright 2010, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "RuntimeStub.h" 18 19 #include <bcc/bcc_assert.h> 20 21 #include <stdbool.h> 22 #include <string.h> 23 #include <stdlib.h> 24 25 typedef struct { 26 const char *mName; 27 void *mPtr; 28 } RuntimeFunction; 29 30 #if defined(__arm__) 31 #define DEF_GENERIC_RUNTIME(func) \ 32 extern void *func; 33 #define DEF_VFP_RUNTIME(func) \ 34 extern void *func ## vfp; 35 #define DEF_LLVM_RUNTIME(func) 36 #define DEF_BCC_RUNTIME(func) 37 #include "Runtime.def" 38 #endif 39 40 static const RuntimeFunction gRuntimes[] = { 41 #if defined(__arm__) 42 #define DEF_GENERIC_RUNTIME(func) \ 43 { #func, (void*) &func }, 44 // TODO: enable only when target support VFP 45 #define DEF_VFP_RUNTIME(func) \ 46 { #func, (void*) &func ## vfp }, 47 #else 48 // host compiler library must contain generic runtime 49 #define DEF_GENERIC_RUNTIME(func) 50 #define DEF_VFP_RUNTIME(func) 51 #endif 52 #define DEF_LLVM_RUNTIME(func) \ 53 { #func, (void*) &func }, 54 #define DEF_BCC_RUNTIME(func) \ 55 { #func, &func ## _bcc }, 56 #include "Runtime.def" 57 }; 58 59 static int CompareRuntimeFunction(const void *a, const void *b) { 60 return strcmp(((const RuntimeFunction*) a)->mName, 61 ((const RuntimeFunction*) b)->mName); 62 } 63 64 void *FindRuntimeFunction(const char *Name) { 65 // binary search 66 const RuntimeFunction Key = { Name, NULL }; 67 const RuntimeFunction *R = 68 bsearch(&Key, 69 gRuntimes, 70 sizeof(gRuntimes) / sizeof(RuntimeFunction), 71 sizeof(RuntimeFunction), 72 CompareRuntimeFunction); 73 74 return ((R) ? R->mPtr : NULL); 75 } 76 77 void VerifyRuntimesTable() { 78 unsigned N = sizeof(gRuntimes) / sizeof(RuntimeFunction), i; 79 for(i = 0; i < N; i++) { 80 const char *Name = gRuntimes[i].mName; 81 int *Ptr = FindRuntimeFunction(Name); 82 83 if (Ptr != (int*) gRuntimes[i].mPtr) 84 bccAssert(false && "Table is corrupted (runtime name should be sorted " 85 "in Runtime.def)."); 86 } 87 } 88
