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linux-user: add gcov support to preexit_cleanup

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As we don't always take the normal exit path when running a guest we
can skip the normal exit destructors where gcov normally dumps it's
info. The GCC manual suggests long running programs use __gcov_dump()
to flush out the coverage state periodically so we use that here.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
This commit is contained in:
Alex Bennée 2018-06-22 17:23:44 +01:00
parent 708b6a643c
commit 7781afb49c
1 changed files with 7 additions and 0 deletions
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7
linux-user/exit.c
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@ -19,10 +19,17 @@
#include "qemu/osdep.h" #include "qemu/osdep.h"
#include "qemu.h" #include "qemu.h"
#ifdef CONFIG_GCOV
extern void __gcov_dump(void);
#endif
void preexit_cleanup(CPUArchState *env, int code) void preexit_cleanup(CPUArchState *env, int code)
{ {
#ifdef TARGET_GPROF #ifdef TARGET_GPROF
_mcleanup(); _mcleanup();
#endif
#ifdef CONFIG_GCOV
__gcov_dump();
#endif #endif
gdb_exit(env, code); gdb_exit(env, code);
} }