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| author | Franck Jullien <franck.jullien@gmail.com> | 2015-01-23 14:09:14 +0100 |
|---|---|---|
| committer | Paul Fertser <fercerpav@gmail.com> | 2015-03-09 06:38:15 +0000 |
| commit | b4b1976e4e01bdc0b33312cda593d7593bae30a9 (patch) | |
| tree | e11f456f64a6a02b4b9476086644780388f7a8b0 /src/target/openrisc/or1k.c | |
| parent | 217403ce096627fec035b79f9464e5bfc09e8f06 (diff) | |
| download | riscv-openocd-b4b1976e4e01bdc0b33312cda593d7593bae30a9.zip riscv-openocd-b4b1976e4e01bdc0b33312cda593d7593bae30a9.tar.gz riscv-openocd-b4b1976e4e01bdc0b33312cda593d7593bae30a9.tar.bz2 | |
openrisc: add profiling function
Change-Id: Ifee89b289069590e6086a4713b165989578e29ec
Signed-off-by: Franck Jullien <franck.jullien@gmail.com>
Reviewed-on: http://openocd.zylin.com/2494
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Diffstat (limited to 'src/target/openrisc/or1k.c')
| -rw-r--r-- | src/target/openrisc/or1k.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/target/openrisc/or1k.c b/src/target/openrisc/or1k.c index cb18075..33de63e 100644 --- a/src/target/openrisc/or1k.c +++ b/src/target/openrisc/or1k.c @@ -29,6 +29,7 @@ #include <target/target.h> #include <target/breakpoints.h> #include <target/target_type.h> +#include <helper/time_support.h> #include <helper/fileio.h> #include "or1k_tap.h" #include "or1k.h" @@ -1205,6 +1206,53 @@ static int or1k_checksum_memory(struct target *target, uint32_t address, return ERROR_FAIL; } +static int or1k_profiling(struct target *target, uint32_t *samples, + uint32_t max_num_samples, uint32_t *num_samples, uint32_t seconds) +{ + struct timeval timeout, now; + struct or1k_common *or1k = target_to_or1k(target); + struct or1k_du *du_core = or1k_to_du(or1k); + int retval = ERROR_OK; + + gettimeofday(&timeout, NULL); + timeval_add_time(&timeout, seconds, 0); + + LOG_INFO("Starting or1k profiling. Sampling npc as fast as we can..."); + + /* Make sure the target is running */ + target_poll(target); + if (target->state == TARGET_HALTED) + retval = target_resume(target, 1, 0, 0, 0); + + if (retval != ERROR_OK) { + LOG_ERROR("Error while resuming target"); + return retval; + } + + uint32_t sample_count = 0; + + for (;;) { + uint32_t reg_value; + retval = du_core->or1k_jtag_read_cpu(&or1k->jtag, GROUP0 + 16 /* NPC */, 1, ®_value); + if (retval != ERROR_OK) { + LOG_ERROR("Error while reading NPC"); + return retval; + } + + samples[sample_count++] = reg_value; + + gettimeofday(&now, NULL); + if ((sample_count >= max_num_samples) || + ((now.tv_sec >= timeout.tv_sec) && (now.tv_usec >= timeout.tv_usec))) { + LOG_INFO("Profiling completed. %" PRIu32 " samples.", sample_count); + break; + } + } + + *num_samples = sample_count; + return retval; +} + COMMAND_HANDLER(or1k_tap_select_command_handler) { struct target *target = get_current_target(CMD_CTX); @@ -1406,4 +1454,6 @@ struct target_type or1k_target = { .examine = or1k_examine, .get_gdb_fileio_info = or1k_get_gdb_fileio_info, + + .profiling = or1k_profiling, }; |