From f0ed9e38ad8e9cde9bfce6ec385cb3fddc5d0fee Mon Sep 17 00:00:00 2001 From: notaz Date: Sat, 2 Dec 2017 23:55:27 +0200 Subject: [PATCH] drc: rm overlapped block entry points otherwise we get duplicates in hash tables --- cpu/sh2/compiler.c | 65 ++++++++++++++++++++++++++++++------------ cpu/sh2/mame/sh2dasm.c | 1 + 2 files changed, 47 insertions(+), 19 deletions(-) diff --git a/cpu/sh2/compiler.c b/cpu/sh2/compiler.c index 7bd9de0..f552553 100644 --- a/cpu/sh2/compiler.c +++ b/cpu/sh2/compiler.c @@ -419,7 +419,7 @@ static void add_to_block_list(struct block_list **blist, struct block_desc *bloc static void rm_from_block_list(struct block_list **blist, struct block_desc *block) { struct block_list *prev = NULL, *current = *blist; - for (; current != NULL; prev = current, current = current->next) { + for (; current != NULL; current = current->next) { if (current->block == block) { if (prev == NULL) *blist = current->next; @@ -428,6 +428,7 @@ static void rm_from_block_list(struct block_list **blist, struct block_desc *blo free(current); return; } + prev = current; } dbg(1, "can't rm block %p (%08x-%08x)", block, block->addr, block->addr + block->size); @@ -514,6 +515,29 @@ missing: dbg(1, "rm_from_hashlist: be %p %08x missing?", be, be->pc); } +static void unregister_links(struct block_entry *be, int tcache_id) +{ + struct block_link *bl_unresolved = unresolved_links[tcache_id]; + struct block_link *bl, *bl_next; + + for (bl = be->links; bl != NULL; ) { + bl_next = bl->next; + bl->next = bl_unresolved; + bl_unresolved = bl; + bl = bl_next; + } + be->links = NULL; + unresolved_links[tcache_id] = bl_unresolved; +} + +// unlike sh2_smc_rm_block, the block stays and can still be accessed +// by other already directly linked blocks, just not preferred +static void kill_block_entry(struct block_entry *be, int tcache_id) +{ + rm_from_hashlist(be, tcache_id); + unregister_links(be, tcache_id); +} + static struct block_desc *dr_add_block(u32 addr, u16 size_lit, u16 size_nolit, int is_slave, int *blk_id) { @@ -524,8 +548,10 @@ static struct block_desc *dr_add_block(u32 addr, u16 size_lit, // do a lookup to get tcache_id and override check be = dr_get_entry(addr, is_slave, &tcache_id); - if (be != NULL) - dbg(1, "block override for %08x", addr); + if (be != NULL) { + dbg(1, "block override for %08x, was %p", addr, be->tcache_ptr); + kill_block_entry(be, tcache_id); + } bcount = &block_counts[tcache_id]; if (*bcount >= block_max_counts[tcache_id]) { @@ -1480,13 +1506,22 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id) // make block entry v = block->entry_count; - if (v < ARRAY_SIZE(block->entryp)) { + if (v < ARRAY_SIZE(block->entryp)) + { + struct block_entry *be_old; + block->entryp[v].pc = pc; block->entryp[v].tcache_ptr = tcache_ptr; block->entryp[v].links = NULL; #if (DRC_DEBUG & 2) block->entryp[v].block = block; #endif + be_old = dr_get_entry(pc, sh2->is_slave, &tcache_id); + if (be_old != NULL) { + dbg(1, "entry override for %08x, was %p", pc, be_old->tcache_ptr); + kill_block_entry(be_old, tcache_id); + } + add_to_hashlist(&block->entryp[v], tcache_id); block->entry_count++; @@ -2992,13 +3027,12 @@ static void sh2_generate_utils(void) #endif } -static void sh2_smc_rm_block_entry(struct block_desc *bd, int tcache_id, u32 ram_mask) +static void sh2_smc_rm_block(struct block_desc *bd, int tcache_id, u32 ram_mask) { - struct block_link *bl, *bl_next, *bl_unresolved; u32 i, addr, end_addr; void *tmp; - dbg(2, " killing entry %08x-%08x-%08x, blkid %d,%d", + dbg(2, " killing block %08x-%08x-%08x, blkid %d,%d", bd->addr, bd->addr + bd->size_nolit, bd->addr + bd->size, tcache_id, bd - block_tables[tcache_id]); if (bd->addr == 0 || bd->entry_count == 0) { @@ -3015,7 +3049,6 @@ static void sh2_smc_rm_block_entry(struct block_desc *bd, int tcache_id, u32 ram } tmp = tcache_ptr; - bl_unresolved = unresolved_links[tcache_id]; // remove from hash table, make incoming links unresolved // XXX: maybe patch branches w/flush instead? @@ -3031,22 +3064,16 @@ static void sh2_smc_rm_block_entry(struct block_desc *bd, int tcache_id, u32 ram host_instructions_updated(bd->entryp[i].tcache_ptr, tcache_ptr); - for (bl = bd->entryp[i].links; bl != NULL; ) { - bl_next = bl->next; - bl->next = bl_unresolved; - bl_unresolved = bl; - bl = bl_next; - } + unregister_links(&bd->entryp[i], tcache_id); } tcache_ptr = tmp; - unresolved_links[tcache_id] = bl_unresolved; bd->addr = bd->size = bd->size_nolit = 0; bd->entry_count = 0; } -static void sh2_smc_rm_block(u32 a, u16 *drc_ram_blk, int tcache_id, u32 shift, u32 mask) +static void sh2_smc_rm_blocks(u32 a, u16 *drc_ram_blk, int tcache_id, u32 shift, u32 mask) { struct block_list **blist = NULL, *entry; u32 from = ~0, to = 0, end_addr, taddr, i; @@ -3064,7 +3091,7 @@ static void sh2_smc_rm_block(u32 a, u16 *drc_ram_blk, int tcache_id, u32 shift, if (to < end_addr) to = end_addr; - sh2_smc_rm_block_entry(block, tcache_id, mask); + sh2_smc_rm_block(block, tcache_id, mask); if (a >= block->addr + block->size_nolit) literal_disabled_frames = 3; @@ -3110,13 +3137,13 @@ static void sh2_smc_rm_block(u32 a, u16 *drc_ram_blk, int tcache_id, u32 shift, void sh2_drc_wcheck_ram(unsigned int a, int val, int cpuid) { dbg(2, "%csh2 smc check @%08x", cpuid ? 's' : 'm', a); - sh2_smc_rm_block(a, Pico32xMem->drcblk_ram, 0, SH2_DRCBLK_RAM_SHIFT, 0x3ffff); + sh2_smc_rm_blocks(a, Pico32xMem->drcblk_ram, 0, SH2_DRCBLK_RAM_SHIFT, 0x3ffff); } void sh2_drc_wcheck_da(unsigned int a, int val, int cpuid) { dbg(2, "%csh2 smc check @%08x", cpuid ? 's' : 'm', a); - sh2_smc_rm_block(a, Pico32xMem->drcblk_da[cpuid], + sh2_smc_rm_blocks(a, Pico32xMem->drcblk_da[cpuid], 1 + cpuid, SH2_DRCBLK_DA_SHIFT, 0xfff); } diff --git a/cpu/sh2/mame/sh2dasm.c b/cpu/sh2/mame/sh2dasm.c index 21a32e6..3fa25e9 100644 --- a/cpu/sh2/mame/sh2dasm.c +++ b/cpu/sh2/mame/sh2dasm.c @@ -610,6 +610,7 @@ unsigned DasmSH2(char *buffer, unsigned pc, UINT16 opcode) case 14: flags = op1110(buffer,pc,opcode); break; default: flags = op1111(buffer,pc,opcode); break; } + (void)flags; return 0;//2 | flags | DASMFLAG_SUPPORTED; } -- 2.39.2