diff options
Diffstat (limited to 'apps/plugins/plugin_crt0.c')
| -rw-r--r-- | apps/plugins/plugin_crt0.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/apps/plugins/plugin_crt0.c b/apps/plugins/plugin_crt0.c index e34124c..1db9d6a 100644 --- a/apps/plugins/plugin_crt0.c +++ b/apps/plugins/plugin_crt0.c @@ -63,10 +63,35 @@ enum plugin_status plugin__start(const void *param) int exit_ret; enum plugin_status ret; - /* zero out the bss section */ #if (CONFIG_PLATFORM & PLATFORM_NATIVE) + +/* IRAM must be copied before clearing the BSS ! */ +#ifdef PLUGIN_USE_IRAM + extern char iramcopy[], iramstart[], iramend[], iedata[], iend[]; + size_t iram_size = iramend - iramstart; + size_t ibss_size = iend - iedata; + if (iram_size > 0 || ibss_size > 0) + { + /* We need to stop audio playback in order to use codec IRAM */ + rb->audio_stop(); + rb->memcpy(iramstart, iramcopy, iram_size); + rb->memset(iedata, 0, ibss_size); +#ifdef HAVE_CPUCACHE_INVALIDATE + /* make the icache (if it exists) up to date with the new code */ + rb->cpucache_invalidate(); +#endif /* HAVE_CPUCACHE_INVALIDATE */ + + /* barrier to prevent reordering iram copy and BSS clearing, + * because the BSS segment alias the IRAM copy. + */ + asm volatile ("" ::: "memory"); + } +#endif /* PLUGIN_USE_IRAM */ + + /* zero out the bss section */ rb->memset(plugin_bss_start, 0, plugin_end_addr - plugin_bss_start); #endif + /* we come back here if exit() was called or the plugin returned normally */ exit_ret = setjmp(__exit_env); if (exit_ret == 0) |