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Now using a dedicated ELF section for all coverage counters

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This commit is contained in:
Clifford Wolf 2014-07-24 15:05:05 +02:00
parent 22ede43b3f
commit 7679000673
3 changed files with 21 additions and 26 deletions
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39
kernel/log.h
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@ -63,34 +63,31 @@ void log_cell(RTLIL::Cell *cell, std::string indent = "");
#define log_assert(_assert_expr_) do { if (_assert_expr_) break; log_error("Assert `%s' failed in %s:%d.\n", #_assert_expr_, __FILE__, __LINE__); } while (0)
#define log_ping() log("-- %s:%d %s --\n", __FILE__, __LINE__, __PRETTY_FUNCTION__)
// ---------------------------------------------------
// This is the magic behind the code coverage counters
// ---------------------------------------------------
struct CoverData {
const char *file, *func, *id;
int line, counter;
} __attribute__ ((packed));
// this two symbols are created by the linker for the "yosys_cover_list" ELF section
#ifndef NDEBUG
extern "C" struct CoverData __start_yosys_cover_list[];
extern "C" struct CoverData __stop_yosys_cover_list[];
#endif
#ifndef NDEBUG
# define cover(_id) do { \
static CoverAgent _cover_agent(__FILE__, __LINE__, __FUNCTION__, _id); \
_cover_agent.ticks++; \
static CoverData __d __attribute__((section("yosys_cover_list"), aligned(1))) = { __FILE__, __FUNCTION__, _id, __LINE__, 0 }; \
__d.counter++; \
} while (0)
#else
# define cover(_id) do { } while (0)
#endif
struct CoverAgent
{
static struct CoverAgent *first_cover_agent;
struct CoverAgent *next_cover_agent;
const char *file;
int line;
const char *func;
const char *id;
int ticks;
CoverAgent(const char *file, int line, const char *func, const char *id) :
file(file), line(line), func(func), id(id), ticks(0)
{
next_cover_agent = first_cover_agent;
first_cover_agent = this;
};
};
// ------------------------------------------------------------
// everything below this line are utilities for troubleshooting