From: ptitSeb <sebastien.chev@gmail.com>
Date: Thu, 2 Jan 2014 22:15:31 +0000 (+0100)
Subject: DYNAREC: More work on DIV, no effect
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=mupen64plus-pandora.git;a=commitdiff_plain;h=e87f91c8bca5d4d5133bc095ead1ddfdac7f863b

DYNAREC: More work on DIV, no effect
---

diff --git a/source/mupen64plus-core/src/r4300/new_dynarec/assem_arm.c b/source/mupen64plus-core/src/r4300/new_dynarec/assem_arm.c
index 88fc797..6d2f0b1 100755
--- a/source/mupen64plus-core/src/r4300/new_dynarec/assem_arm.c
+++ b/source/mupen64plus-core/src/r4300/new_dynarec/assem_arm.c
@@ -4096,7 +4096,7 @@ static void multdiv_assemble_arm(int i,struct regstat *i_regs)
       }
       if(opcode2[i]==0x1A) // DIV
       {
-		#if 1
+		#if 0
         signed char m1l=get_reg(i_regs->regmap,rs1[i]);
         signed char m2l=get_reg(i_regs->regmap,rs2[i]);
         assert(m1l>=0);
@@ -4142,7 +4142,23 @@ static void multdiv_assemble_arm(int i,struct regstat *i_regs)
       }
       if(opcode2[i]==0x1B) // DIVU
       {
-        signed char d1=get_reg(i_regs->regmap,rs1[i]); // dividend
+	    #if 0
+		signed char m1l=get_reg(i_regs->regmap,rs1[i]);
+		signed char m2l=get_reg(i_regs->regmap,rs2[i]);
+		assert(m1l>=0);
+		assert(m2l>=0);
+		save_regs(0x100f);
+		if(m1l!=0) emit_mov(m1l,0);
+		if(m2l<1) emit_readword((int)&dynarec_local,1);
+		else if(m2l>1) emit_mov(m2l,1);
+		emit_call((int)&divu32);
+		restore_regs(0x100f);
+		signed char hil=get_reg(i_regs->regmap,HIREG);
+		if(hil>=0) emit_loadreg(HIREG,hil);
+		signed char lol=get_reg(i_regs->regmap,LOREG);
+		if(lol>=0) emit_loadreg(LOREG,lol);
+		#else
+		signed char d1=get_reg(i_regs->regmap,rs1[i]); // dividend
         signed char d2=get_reg(i_regs->regmap,rs2[i]); // divisor
         assert(d1>=0);
         assert(d2>=0);
@@ -4162,6 +4178,7 @@ static void multdiv_assemble_arm(int i,struct regstat *i_regs)
         emit_adcs(quotient,quotient,quotient);
         emit_shrcc_imm(d2,1,d2);
         emit_jcc((int)out-16); // -4
+		#endif
       }
     }
     else // 64-bit
diff --git a/source/mupen64plus-core/src/r4300/new_dynarec/assem_arm.h b/source/mupen64plus-core/src/r4300/new_dynarec/assem_arm.h
old mode 100644
new mode 100755
index a9db4f8..8b3f0e4
--- a/source/mupen64plus-core/src/r4300/new_dynarec/assem_arm.h
+++ b/source/mupen64plus-core/src/r4300/new_dynarec/assem_arm.h
@@ -8,6 +8,7 @@
 #define CORTEX_A8_BRANCH_PREDICTION_HACK 1
 #define USE_MINI_HT 1
 //#define REG_PREFETCH 1
+//#define IMM_PREFETCH 1
 #define HAVE_CONDITIONAL_CALL 1
 #define RAM_OFFSET 1
 
diff --git a/source/mupen64plus-core/src/r4300/new_dynarec/new_dynarec.c b/source/mupen64plus-core/src/r4300/new_dynarec/new_dynarec.c
index 53e569f..e76e4c9 100755
--- a/source/mupen64plus-core/src/r4300/new_dynarec/new_dynarec.c
+++ b/source/mupen64plus-core/src/r4300/new_dynarec/new_dynarec.c
@@ -272,7 +272,7 @@ static int verify_dirty(void *addr);
 //#define DEBUG_CYCLE_COUNT 1
 
 // Uncomment these two lines to generate debug output:
-//#define ASSEM_DEBUG 1
+#//define ASSEM_DEBUG 1
 //#define INV_DEBUG 1
 
 // Uncomment this line to output the number of NOTCOMPILED blocks as they occur:
@@ -1762,6 +1762,7 @@ void multdiv_alloc(struct regstat *current,int i)
       current->uu&=~(1LL<<HIREG);
       current->uu&=~(1LL<<LOREG);
       alloc_reg64(current,i,HIREG);
+	  alloc_reg64(current,i,LOREG);
       //if(HOST_REGS>10) alloc_reg64(current,i,LOREG);	//*SEB* Why commenting this line? uncommenting make SM64 freeze after title (before mario head and spinning stars)
       alloc_reg64(current,i,rs1[i]);
       alloc_reg64(current,i,rs2[i]);
@@ -1778,10 +1779,18 @@ void multdiv_alloc(struct regstat *current,int i)
     // Multiply by zero is zero.
     // MIPS does not have a divide by zero exception.
     // The result is undefined, we return zero.
-	alloc_reg(current,i,HIREG);
-	alloc_reg(current,i,LOREG);
-	current->is32|=1LL<<HIREG;
-	current->is32|=1LL<<LOREG;
+	if((opcode2[i]&4)==0) // 32-bit
+	{
+		alloc_reg(current,i,HIREG);
+		alloc_reg(current,i,LOREG);
+		current->is32|=1LL<<HIREG;
+		current->is32|=1LL<<LOREG;
+	} else {
+		alloc_reg64(current,i,HIREG);
+		alloc_reg64(current,i,LOREG);
+		current->is32&=~(1LL<<HIREG);
+		current->is32&=~(1LL<<LOREG);
+	}
 	dirty_reg(current,HIREG);
 	dirty_reg(current,LOREG);
   }