drc: rm unneeded writebacks in stubs, as suggested by Ari64

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

diff --git a/libpcsxcore/new_dynarec/assem_arm.c b/libpcsxcore/new_dynarec/assem_arm.c
index eed584e..bc9e5cd 100644 (file)
--- a/libpcsxcore/new_dynarec/assem_arm.c
+++ b/libpcsxcore/new_dynarec/assem_arm.c
@@ -2646,12 +2646,14 @@ do_readstub(int n)
   emit_writeword(rs,(int)&address);
   //emit_pusha();
   save_regs(reglist);
   emit_writeword(rs,(int)&address);
   //emit_pusha();
   save_regs(reglist);

+#ifndef PCSX

   ds=i_regs!=&regs[i];
   int real_rs=(itype[i]==LOADLR)?-1:get_reg(i_regmap,rs1[i]);
   u_int cmask=ds?-1:(0x100f|~i_regs->wasconst);
   if(!ds) load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&0x100f,i);
   wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty&cmask&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)));
   if(!ds) wb_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&~0x100f,i);
   ds=i_regs!=&regs[i];
   int real_rs=(itype[i]==LOADLR)?-1:get_reg(i_regmap,rs1[i]);
   u_int cmask=ds?-1:(0x100f|~i_regs->wasconst);
   if(!ds) load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&0x100f,i);
   wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty&cmask&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)));
   if(!ds) wb_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&~0x100f,i);

+#endif

   emit_shrimm(rs,16,1);
   int cc=get_reg(i_regmap,CCREG);
   if(cc<0) {
   emit_shrimm(rs,16,1);
   int cc=get_reg(i_regmap,CCREG);
   if(cc<0) {


@@ -2842,12 +2844,14 @@ do_writestub(int n)
   }
   //emit_pusha();
   save_regs(reglist);
   }
   //emit_pusha();
   save_regs(reglist);

+#ifndef PCSX

   ds=i_regs!=&regs[i];
   int real_rs=get_reg(i_regmap,rs1[i]);
   u_int cmask=ds?-1:(0x100f|~i_regs->wasconst);
   if(!ds) load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&0x100f,i);
   wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty&cmask&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)));
   if(!ds) wb_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&~0x100f,i);
   ds=i_regs!=&regs[i];
   int real_rs=get_reg(i_regmap,rs1[i]);
   u_int cmask=ds?-1:(0x100f|~i_regs->wasconst);
   if(!ds) load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&0x100f,i);
   wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty&cmask&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)));
   if(!ds) wb_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&~0x100f,i);

+#endif

   emit_shrimm(rs,16,1);
   int cc=get_reg(i_regmap,CCREG);
   if(cc<0) {
   emit_shrimm(rs,16,1);
   int cc=get_reg(i_regmap,CCREG);
   if(cc<0) {


@@ -2979,12 +2983,14 @@ do_unalignedwritestub(int n)
   emit_writeword(temp2,(int)&address);
 
   save_regs(reglist);
   emit_writeword(temp2,(int)&address);
 
   save_regs(reglist);

+#ifndef PCSX

   ds=i_regs!=&regs[i];
   real_rs=get_reg(i_regmap,rs1[i]);
   u_int cmask=ds?-1:(0x100f|~i_regs->wasconst);
   if(!ds) load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&0x100f,i);
   wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty&cmask&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)));
   if(!ds) wb_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&~0x100f,i);
   ds=i_regs!=&regs[i];
   real_rs=get_reg(i_regmap,rs1[i]);
   u_int cmask=ds?-1:(0x100f|~i_regs->wasconst);
   if(!ds) load_all_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&0x100f,i);
   wb_dirtys(i_regs->regmap_entry,i_regs->was32,i_regs->wasdirty&cmask&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs)));
   if(!ds) wb_consts(regs[i].regmap_entry,regs[i].was32,regs[i].wasdirty&~(1<<addr)&(real_rs<0?-1:~(1<<real_rs))&~0x100f,i);

+#endif

   emit_shrimm(addr,16,1);
   int cc=get_reg(i_regmap,CCREG);
   if(cc<0) {
   emit_shrimm(addr,16,1);
   int cc=get_reg(i_regmap,CCREG);
   if(cc<0) {


@@ -3757,10 +3763,11 @@ void c2op_assemble(int i,struct regstat *i_regs)
 
   if (gte_handlers[c2op]!=NULL) {
     int cc=get_reg(i_regs->regmap,CCREG);
 
   if (gte_handlers[c2op]!=NULL) {
     int cc=get_reg(i_regs->regmap,CCREG);

-    emit_movimm(source[i],temp); // opcode
+    emit_movimm(source[i],1); // opcode

     if (cc>=0&&gte_cycletab[c2op])
     if (cc>=0&&gte_cycletab[c2op])

-      emit_addimm(cc,gte_cycletab[c2op]/2,cc); // XXX: cound just adjust ccadj?
-    emit_writeword(temp,(int)&psxRegs.code);
+      emit_addimm(cc,gte_cycletab[c2op]/2,cc); // XXX: could just adjust ccadj?
+    emit_addimm(FP,(int)&psxRegs.CP2D.r[0]-(int)&dynarec_local,0); // cop2 regs
+    emit_writeword(1,(int)&psxRegs.code);

     emit_call((int)gte_handlers[c2op]);
   }
 
     emit_call((int)gte_handlers[c2op]);
   }