From f76eeef94001323d5019a134c54847ece2493ae9 Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Sun, 12 Dec 2010 23:57:47 +0200
Subject: [PATCH 1/1] drc: don't clear ARM caches on whole translation cache -
 it's very slow

---
 libpcsxcore/new_dynarec/assem_arm.c   |  3 +-
 libpcsxcore/new_dynarec/emu_if.c      |  6 ++--
 libpcsxcore/new_dynarec/new_dynarec.c | 47 +++++++++++++++++----------
 3 files changed, 35 insertions(+), 21 deletions(-)

diff --git a/libpcsxcore/new_dynarec/assem_arm.c b/libpcsxcore/new_dynarec/assem_arm.c
index cd3429f9..264f9d62 100644
--- a/libpcsxcore/new_dynarec/assem_arm.c
+++ b/libpcsxcore/new_dynarec/assem_arm.c
@@ -142,7 +142,7 @@ add_literal(int addr,int val)
   literalcount++; 
 } 
 
-void kill_pointer(void *stub)
+void *kill_pointer(void *stub)
 {
   int *ptr=(int *)(stub+4);
   assert((*ptr&0x0ff00000)==0x05900000);
@@ -150,6 +150,7 @@ void kill_pointer(void *stub)
   int **l_ptr=(void *)ptr+offset+8;
   int *i_ptr=*l_ptr;
   set_jump_target((int)i_ptr,(int)stub);
+  return i_ptr;
 }
 
 int get_pointer(void *stub)
diff --git a/libpcsxcore/new_dynarec/emu_if.c b/libpcsxcore/new_dynarec/emu_if.c
index 08d9f57a..bdf0c8f5 100644
--- a/libpcsxcore/new_dynarec/emu_if.c
+++ b/libpcsxcore/new_dynarec/emu_if.c
@@ -184,9 +184,9 @@ static void ari64_clear(u32 addr, u32 size)
 	evprintf("ari64_clear %08x %04x\n", addr, size);
 
 	/* check for RAM mirrors */
-	if ((start & ~0xe0000000) < 0x200000) {
-		start &= ~0xe0000000;
-		start |=  0x80000000;
+	if ((addr & ~0xe0000000) < 0x200000) {
+		addr &= ~0xe0000000;
+		addr |=  0x80000000;
 	}
 
 	start = addr >> 12;
diff --git a/libpcsxcore/new_dynarec/new_dynarec.c b/libpcsxcore/new_dynarec/new_dynarec.c
index 2a727114..e4e6a9af 100644
--- a/libpcsxcore/new_dynarec/new_dynarec.c
+++ b/libpcsxcore/new_dynarec/new_dynarec.c
@@ -1076,25 +1076,37 @@ void ll_clear(struct ll_entry **head)
 // Dereference the pointers and remove if it matches
 void ll_kill_pointers(struct ll_entry *head,int addr,int shift)
 {
+  u_int old_host_addr=0;
   while(head) {
     int ptr=get_pointer(head->addr);
     inv_debug("EXP: Lookup pointer to %x at %x (%x)\n",(int)ptr,(int)head->addr,head->vaddr);
     if(((ptr>>shift)==(addr>>shift)) ||
        (((ptr-MAX_OUTPUT_BLOCK_SIZE)>>shift)==(addr>>shift)))
     {
-      inv_debug("EXP: Kill pointer at %x (%x)\n",(int)head->addr,head->vaddr);
-      kill_pointer(head->addr);
+      printf("EXP: Kill pointer at %x (%x)\n",(int)head->addr,head->vaddr);
+      u_int host_addr=(u_int)kill_pointer(head->addr);
+
+      if((host_addr>>12)!=(old_host_addr>>12)) {
+        #ifdef __arm__
+        __clear_cache((void *)(old_host_addr&~0xfff),(void *)(old_host_addr|0xfff));
+        #endif
+        old_host_addr=host_addr;
+      }
     }
     head=head->next;
   }
+  #ifdef __arm__
+  if (old_host_addr)
+    __clear_cache((void *)(old_host_addr&~0xfff),(void *)(old_host_addr|0xfff));
+  #endif
 }
 
 // This is called when we write to a compiled block (see do_invstub)
-int invalidate_page(u_int page)
+void invalidate_page(u_int page)
 {
-  int modified=0;
   struct ll_entry *head;
   struct ll_entry *next;
+  u_int old_host_addr=0;
   head=jump_in[page];
   jump_in[page]=0;
   while(head!=NULL) {
@@ -1108,17 +1120,25 @@ int invalidate_page(u_int page)
   jump_out[page]=0;
   while(head!=NULL) {
     inv_debug("INVALIDATE: kill pointer to %x (%x)\n",head->vaddr,(int)head->addr);
-    kill_pointer(head->addr);
-    modified=1;
+    u_int host_addr=(u_int)kill_pointer(head->addr);
+
+    if((host_addr>>12)!=(old_host_addr>>12)) {
+      #ifdef __arm__
+      __clear_cache((void *)(old_host_addr&~0xfff),(void *)(old_host_addr|0xfff));
+      #endif
+      old_host_addr=host_addr;
+    }
     next=head->next;
     free(head);
     head=next;
   }
-  return modified;
+  #ifdef __arm__
+  if (old_host_addr)
+    __clear_cache((void *)(old_host_addr&~0xfff),(void *)(old_host_addr|0xfff));
+  #endif
 }
 void invalidate_block(u_int block)
 {
-  int modified;
   u_int page=get_page(block<<12);
   u_int vpage=get_vpage(block<<12);
   inv_debug("INVALIDATE: %x (%d)\n",block<<12,page);
@@ -1151,7 +1171,7 @@ void invalidate_block(u_int block)
     head=head->next;
   }
   //printf("first=%d last=%d\n",first,last);
-  modified=invalidate_page(page);
+  invalidate_page(page);
   assert(first+5>page); // NB: this assumes MAXBLOCK<=4096 (4 pages)
   assert(last<page+5);
   // Invalidate the adjacent pages if a block crosses a 4K boundary
@@ -1177,10 +1197,7 @@ void invalidate_block(u_int block)
   }
   else if(block>=0x80000&&block<0x80800) memory_map[block]=((u_int)rdram-0x80000000)>>2;
 #endif
-  #ifdef __arm__
-  if(modified)
-    __clear_cache((void *)BASE_ADDR,(void *)BASE_ADDR+(1<<TARGET_SIZE_2));
-  #endif
+
   #ifdef USE_MINI_HT
   memset(mini_ht,-1,sizeof(mini_ht));
   #endif
@@ -10812,10 +10829,6 @@ int new_recompile_block(int addr)
         break;
       case 3:
         // Clear jump_out
-        #ifdef __arm__
-        if((expirep&2047)==0)
-          __clear_cache((void *)BASE_ADDR,(void *)BASE_ADDR+(1<<TARGET_SIZE_2));
-        #endif
         ll_remove_matching_addrs(jump_out+(expirep&2047),base,shift);
         ll_remove_matching_addrs(jump_out+2048+(expirep&2047),base,shift);
         break;
-- 
2.39.2