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Merge pull request #789 from LudwigOrtmann/native_gprof

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native profiling tools support
This commit is contained in:
René Kijewski 2014-04-05 02:26:15 +02:00
commit 2749531324
3 changed files with 38 additions and 6 deletions
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27
boards/native/Makefile.include
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@ -20,15 +20,23 @@ export DEBUGGER = gdb
export TERMPROG = $(ELF)
export FLASHER = true
export VALGRIND ?= valgrind
export CGANNOTATE ?= cg_annotate
export GPROF ?= gprof
# flags:
export CFLAGS += -Wall -Wextra -pedantic -m32
export LINKFLAGS += -m32 -gc -ldl
export ASFLAGS =
export DEBUGGER_FLAGS = $(ELF)
export VALGRIND_FLAGS ?= --track-origins=yes
term-memcheck: export VALGRIND_FLAGS ?= --track-origins=yes
term-cachegrind: export CACHEGRIND_FLAGS += --tool=cachegrind
term-gprof: export TERMPROG = GMON_OUT_PREFIX=gmon.out $(ELF)
all-valgrind: export CFLAGS += -DHAVE_VALGRIND_H -g
all-valgrind: export NATIVEINCLUDES += $(shell pkg-config valgrind --cflags)
all-debug: export CFLAGS += -g
all-cachegrind: export CFLAGS += -g
all-gprof: export CFLAGS += -pg
all-gprof: export LINKFLAGS += -pg
export INCLUDES += $(NATIVEINCLUDES)
@ -58,10 +66,25 @@ endif
all: # do not override first target
all-gprof: all
all-valgrind: all
valgrind:
all-cachegrind: all
term-valgrind:
# use this if you want to attach gdb from valgrind:
# echo 0 > /proc/sys/kernel/yama/ptrace_scope
# VALGRIND_FLAGS += --db-attach=yes
$(VALGRIND) $(VALGRIND_FLAGS) $(ELF) $(PORT)
term-cachegrind:
$(VALGRIND) $(CACHEGRIND_FLAGS) $(ELF) $(PORT)
term-gprof: term
eval-gprof:
$(GPROF) $(ELF) $(shell ls -rt gmon.out* | tail -1)
eval-cachegrind:
$(CGANNOTATE) $(shell ls -rt cachegrind.out* | tail -1)

1
cpu/native/startup.c
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@ -186,7 +186,6 @@ __attribute__((constructor)) static void startup(int argc, char **argv)
*(void **)(&real_read) = dlsym(RTLD_NEXT, "read");
*(void **)(&real_write) = dlsym(RTLD_NEXT, "write");
*(void **)(&real_malloc) = dlsym(RTLD_NEXT, "malloc");
*(void **)(&real_calloc) = dlsym(RTLD_NEXT, "calloc");
*(void **)(&real_realloc) = dlsym(RTLD_NEXT, "realloc");
*(void **)(&real_free) = dlsym(RTLD_NEXT, "free");

16
cpu/native/syscalls.c
View File

@ -107,12 +107,22 @@ void free(void *ptr)
_native_syscall_leave();
}
int _native_in_calloc;
void *calloc(size_t nmemb, size_t size)
{
/* XXX: This is a dirty hack to enable old dlsym versions to run.
* Throw it out when Ubuntu 12.04 support runs out (in 2017-04)! */
/* dynamically load calloc when it's needed - this is necessary to
* support profiling as it uses calloc before startup runs */
if (!real_calloc) {
return NULL;
if (_native_in_calloc) {
/* XXX: This is a dirty hack to enable old dlsym versions to run.
* Throw it out when Ubuntu 12.04 support runs out (in 2017-04)! */
return NULL;
}
else {
_native_in_calloc = 1;
*(void **)(&real_calloc) = dlsym(RTLD_NEXT, "calloc");
_native_in_calloc = 0;
}
}
void *r;