compiler-rt/lib/profile/InstrProfilingPlatformWindows.c

   1 /*===- InstrProfilingPlatformWindows.c - Profile data on Windows ----------===*\
   2 |*
   3 |* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 |* See https://llvm.org/LICENSE.txt for license information.
   5 |* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 |*
   7 \*===----------------------------------------------------------------------===*/
   8
   9 #include "InstrProfiling.h"
  10 #include "InstrProfilingInternal.h"
  11
  12 #if defined(_WIN32)
  13
  14 #if defined(_MSC_VER)
  15 /* Merge read-write sections into .data. */
  16 #pragma comment(linker, "/MERGE:.lprfc=.data")
  17 #pragma comment(linker, "/MERGE:.lprfb=.data")
  18 #pragma comment(linker, "/MERGE:.lprfd=.data")
  19 #pragma comment(linker, "/MERGE:.lprfv=.data")
  20 #pragma comment(linker, "/MERGE:.lprfnd=.data")
  21 /* Do *NOT* merge .lprfn and .lcovmap into .rdata. llvm-cov must be able to find
  22  * after the fact.
  23  */
  24
  25 /* Allocate read-only section bounds. */
  26 #pragma section(".lprfn$A", read)
  27 #pragma section(".lprfn$Z", read)
  28
  29 /* Allocate read-write section bounds. */
  30 #pragma section(".lprfd$A", read, write)
  31 #pragma section(".lprfd$Z", read, write)
  32 #pragma section(".lprfc$A", read, write)
  33 #pragma section(".lprfc$Z", read, write)
  34 #pragma section(".lprfb$A", read, write)
  35 #pragma section(".lprfb$Z", read, write)
  36 #pragma section(".lorderfile$A", read, write)
  37 #pragma section(".lprfnd$A", read, write)
  38 #pragma section(".lprfnd$Z", read, write)
  39 #endif
  40
  41 __llvm_profile_data COMPILER_RT_SECTION(".lprfd$A") DataStart = {0};
  42 __llvm_profile_data COMPILER_RT_SECTION(".lprfd$Z") DataEnd = {0};
  43
  44 const char COMPILER_RT_SECTION(".lprfn$A") NamesStart = '\0';
  45 const char COMPILER_RT_SECTION(".lprfn$Z") NamesEnd = '\0';
  46
  47 char COMPILER_RT_SECTION(".lprfc$A") CountersStart;
  48 char COMPILER_RT_SECTION(".lprfc$Z") CountersEnd;
  49 char COMPILER_RT_SECTION(".lprfb$A") BitmapStart;
  50 char COMPILER_RT_SECTION(".lprfb$Z") BitmapEnd;
  51 uint32_t COMPILER_RT_SECTION(".lorderfile$A") OrderFileStart;
  52
  53 ValueProfNode COMPILER_RT_SECTION(".lprfnd$A") VNodesStart;
  54 ValueProfNode COMPILER_RT_SECTION(".lprfnd$Z") VNodesEnd;
  55
  56 const __llvm_profile_data *__llvm_profile_begin_data(void) {
  57   return &DataStart + 1;
  58 }
  59 const __llvm_profile_data *__llvm_profile_end_data(void) { return &DataEnd; }
  60
  61 const char *__llvm_profile_begin_names(void) { return &NamesStart + 1; }
  62 const char *__llvm_profile_end_names(void) { return &NamesEnd; }
  63
  64 char *__llvm_profile_begin_counters(void) { return &CountersStart + 1; }
  65 char *__llvm_profile_end_counters(void) { return &CountersEnd; }
  66 char *__llvm_profile_begin_bitmap(void) { return &BitmapStart + 1; }
  67 char *__llvm_profile_end_bitmap(void) { return &BitmapEnd; }
  68 uint32_t *__llvm_profile_begin_orderfile(void) { return &OrderFileStart; }
  69
  70 ValueProfNode *__llvm_profile_begin_vnodes(void) { return &VNodesStart + 1; }
  71 ValueProfNode *__llvm_profile_end_vnodes(void) { return &VNodesEnd; }
  72
  73 ValueProfNode *CurrentVNode = &VNodesStart + 1;
  74 ValueProfNode *EndVNode = &VNodesEnd;
  75
  76 COMPILER_RT_VISIBILITY int __llvm_write_binary_ids(ProfDataWriter *Writer) {
  77   return 0;
  78 }
  79
  80 #endif