diff options
Diffstat (limited to 'csu/initfini.c')
| -rw-r--r-- | csu/initfini.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/csu/initfini.c b/csu/initfini.c index a3c3b3b7bc..e1bf2b8284 100644 --- a/csu/initfini.c +++ b/csu/initfini.c @@ -59,6 +59,7 @@ cp crti.s-new crtn.s-new"); /* Append the .init prologue to crti.s-new. */ asm ("cat >> crti.s-new <<\\EOF.crti.init"); + SECTION (".init") void _init (void) @@ -69,10 +70,13 @@ _init (void) gcrt1.o to reference a symbol which would be defined by some library module which has a constructor; but then user code's constructors would come first, and not be profiled. */ - extern void __gmon_start__ (void) __attribute__ ((weak)); + extern volatile void __gmon_start__ (void) __attribute__ ((weak)); + /* This volatile variable is necessary to avoid GCC optimizing + out the test. */ + register volatile void (*g) (void) = &__gmon_start__; weak_symbol (__gmon_start__) - if (&__gmon_start__) - __gmon_start__ (); + if (g) + (*g) (); /* End the here document containing the .init prologue code. Then fetch the .section directive just written and append that |