drc: don't remove unused i/o reads because of FIFOs

[pcsx_rearmed.git] / libpcsxcore / new_dynarec / new_dynarec.c

diff --git a/libpcsxcore/new_dynarec/new_dynarec.c b/libpcsxcore/new_dynarec/new_dynarec.c
index 7495875..2a72711 100644 (file)
--- a/libpcsxcore/new_dynarec/new_dynarec.c
+++ b/libpcsxcore/new_dynarec/new_dynarec.c
@@ -2717,7 +2717,7 @@ void load_assemble(int i,struct regstat *i_regs)
   int s,th,tl,addr,map=-1;
   int offset;
   int jaddr=0;
-  int memtarget,c=0;
+  int memtarget=0,c=0;
   u_int hr,reglist=0;
   th=get_reg(i_regs->regmap,rt1[i]|64);
   tl=get_reg(i_regs->regmap,rt1[i]);
@@ -2732,11 +2732,21 @@ void load_assemble(int i,struct regstat *i_regs)
     memtarget=((signed int)(constmap[i][s]+offset))<(signed int)0x80800000;
     if(using_tlb&&((signed int)(constmap[i][s]+offset))>=(signed int)0xC0000000) memtarget=1;
   }
-  if(offset||s<0||c) addr=tl;
-  else addr=s;
   //printf("load_assemble: c=%d\n",c);
   //if(c) printf("load_assemble: const=%x\n",(int)constmap[i][s]+offset);
   // FIXME: Even if the load is a NOP, we should check for pagefaults...
+#ifdef PCSX
+  if(tl<0) {
+    if(!c||(((u_int)constmap[i][s]+offset)>>16)==0x1f80) {
+      // could be FIFO, must perform the read
+      assem_debug("(forced read)\n");
+      tl=get_reg(i_regs->regmap,-1);
+      assert(tl>=0);
+    }
+  }
+  if(offset||s<0||c) addr=tl;
+  else addr=s;
+#endif
   if(tl>=0) {
     //assert(tl>=0);
     //assert(rt1[i]);
@@ -6697,9 +6707,6 @@ void unneeded_registers(int istart,int iend,int r)
     // Save it
     unneeded_reg[i]=u;
     unneeded_reg_upper[i]=uu;
-#ifdef FORCE32
-    unneeded_reg_upper[i]=-1LL;
-#endif
     /*
     printf("ur (%d,%d) %x: ",istart,iend,start+i*4);
     printf("U:");
@@ -6721,6 +6728,12 @@ void unneeded_registers(int istart,int iend,int r)
     }
     printf("\n");*/
   }
+#ifdef FORCE32
+  for (i=iend;i>=istart;i--)
+  {
+    unneeded_reg_upper[i]=branch_unneeded_reg_upper[i]=-1LL;
+  }
+#endif
 }
 
 // Identify registers which are likely to contain 32-bit values
@@ -7708,12 +7721,16 @@ int new_recompile_block(int addr)
 #ifdef PCSX
   if (Config.HLE && start == 0x80001000) {
     // XXX: is this enough? Maybe check hleSoftCall?
+    u_int beginning=(u_int)out;
     u_int page=get_page(start);
     ll_add(jump_in+page,start,out);
     invalid_code[start>>12]=0;
     emit_movimm(start,0);
     emit_writeword(0,(int)&pcaddr);
-    emit_jmp((int)new_dyna_leave); // enough??
+    emit_jmp((int)new_dyna_leave);
+#ifdef __arm__
+    __clear_cache((void *)beginning,out);
+#endif
     return 0;
   }
   else if ((u_int)addr < 0x00200000) {