From: notaz Date: Sat, 26 Feb 2022 22:10:57 +0000 (+0200) Subject: drc: try to avoid some block trapping X-Git-Tag: r24l~494 X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11eca54fc7c402e10c983c4135b8d92626da7e5e;p=pcsx_rearmed.git drc: try to avoid some block trapping --- diff --git a/libpcsxcore/new_dynarec/new_dynarec.c b/libpcsxcore/new_dynarec/new_dynarec.c index d369b815..760d4273 100644 --- a/libpcsxcore/new_dynarec/new_dynarec.c +++ b/libpcsxcore/new_dynarec/new_dynarec.c @@ -179,7 +179,8 @@ struct block_info u_int tc_offs; //u_int tc_len; u_int reg_sv_flags; - u_short is_dirty; + u_char is_dirty; + u_char inv_near_misses; u_short jump_in_cnt; struct { u_int vaddr; @@ -645,7 +646,7 @@ static void *try_restore_block(u_int vaddr, u_int start_page, u_int end_page) if (memcmp(block->source, block->copy, block->len)) continue; - block->is_dirty = 0; + block->is_dirty = block->inv_near_misses = 0; found_clean = block->jump_in[i].addr; hash_table_add(vaddr, found_clean); mark_invalid_code(block->start, block->len, 0); @@ -1347,6 +1348,7 @@ static void invalidate_block(struct block_info *block) static int invalidate_range(u_int start, u_int end, u32 *inv_start_ret, u32 *inv_end_ret) { + struct block_info *last_block = NULL; u_int start_page = get_page_prev(start); u_int end_page = get_page(end - 1); u_int start_m = pmmask(start); @@ -1366,6 +1368,7 @@ static int invalidate_range(u_int start, u_int end, for (block = blocks[page]; block != NULL; block = block->next) { if (block->is_dirty) continue; + last_block = block; blk_end_m = pmmask(block->start + block->len); if (blk_end_m <= start_m) { inv_start = max(inv_start, blk_end_m); @@ -1385,12 +1388,22 @@ static int invalidate_range(u_int start, u_int end, } } + if (!hit && last_block && last_block->source) { + // could be some leftover unused block, uselessly trapping writes + last_block->inv_near_misses++; + if (last_block->inv_near_misses > 128) { + invalidate_block(last_block); + stat_inc(stat_inv_hits); + hit++; + } + } if (hit) { do_clear_cache(); #ifdef USE_MINI_HT memset(mini_ht, -1, sizeof(mini_ht)); #endif } + if (inv_start <= (start_m & ~0xfff) && inv_end >= (start_m | 0xfff)) // the whole page is empty now mark_invalid_code(start, 1, 1); @@ -8793,6 +8806,7 @@ static struct block_info *new_block_info(u_int start, u_int len, block->tc_offs = beginning - ndrc->translation_cache; //block->tc_len = out - beginning; block->is_dirty = 0; + block->inv_near_misses = 0; block->jump_in_cnt = jump_in_count; // insert sorted by start mirror-unmasked vaddr