tsan: explicitly mark symbols referenced from assembly as hidden

this allows to build tsan runtime as dynamic library

llvm-svn: 168589

diff --git a/compiler-rt/lib/tsan/rtl/tsan_rtl.h b/compiler-rt/lib/tsan/rtl/tsan_rtl.h
index e861a65..967bf79 100644 (file)
--- a/compiler-rt/lib/tsan/rtl/tsan_rtl.h
+++ b/compiler-rt/lib/tsan/rtl/tsan_rtl.h
@@ -523,6 +523,7 @@ void AfterSleep(ThreadState *thr, uptr pc);
 #define HACKY_CALL(f) \
   __asm__ __volatile__("sub $1024, %%rsp;" \
                        "/*.cfi_adjust_cfa_offset 1024;*/" \
+                       ".hidden " #f "_thunk;" \
                        "call " #f "_thunk;" \
                        "add $1024, %%rsp;" \
                        "/*.cfi_adjust_cfa_offset -1024;*/" \

diff --git a/compiler-rt/lib/tsan/rtl/tsan_rtl_amd64.S b/compiler-rt/lib/tsan/rtl/tsan_rtl_amd64.S
index aee650d..af87856 100644 (file)
--- a/compiler-rt/lib/tsan/rtl/tsan_rtl_amd64.S
+++ b/compiler-rt/lib/tsan/rtl/tsan_rtl_amd64.S
@@ -1,5 +1,6 @@
 .section .text
 
+.hidden __tsan_trace_switch
 .globl __tsan_trace_switch_thunk
 __tsan_trace_switch_thunk:
   .cfi_startproc
@@ -79,6 +80,7 @@ __tsan_trace_switch_thunk:
   ret
   .cfi_endproc
 
+.hidden __tsan_report_race
 .globl __tsan_report_race_thunk
 __tsan_report_race_thunk:
   .cfi_startproc