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-rw-r--r--src/core/arm/dyncom/arm_dyncom_interpreter.cpp218
-rw-r--r--src/core/arm/interpreter/armemu.cpp93
-rw-r--r--src/core/arm/interpreter/armsupp.cpp50
-rw-r--r--src/core/arm/skyeye_common/armdefs.h6
4 files changed, 319 insertions, 48 deletions
diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
index 9b355fc6e..4cd8fe6ac 100644
--- a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
+++ b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
@@ -1427,6 +1427,13 @@ typedef struct _blx_1_thumb {
unsigned int instr;
}blx_1_thumb;
+typedef struct _pkh_inst {
+ u32 Rm;
+ u32 Rn;
+ u32 Rd;
+ u8 imm;
+} pkh_inst;
+
typedef arm_inst * ARM_INST_PTR;
#define CACHE_BUFFER_SIZE (64 * 1024 * 2000)
@@ -2376,8 +2383,30 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(orr)(unsigned int inst, int index)
}
return inst_base;
}
-ARM_INST_PTR INTERPRETER_TRANSLATE(pkhbt)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("PKHBT"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(pkhtb)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("PKHTB"); }
+
+ARM_INST_PTR INTERPRETER_TRANSLATE(pkhbt)(unsigned int inst, int index)
+{
+ arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(pkh_inst));
+ pkh_inst *inst_cream = (pkh_inst *)inst_base->component;
+
+ inst_base->cond = BITS(inst, 28, 31);
+ inst_base->idx = index;
+ inst_base->br = NON_BRANCH;
+ inst_base->load_r15 = 0;
+
+ inst_cream->Rd = BITS(inst, 12, 15);
+ inst_cream->Rn = BITS(inst, 16, 19);
+ inst_cream->Rm = BITS(inst, 0, 3);
+ inst_cream->imm = BITS(inst, 7, 11);
+
+ return inst_base;
+}
+
+ARM_INST_PTR INTERPRETER_TRANSLATE(pkhtb)(unsigned int inst, int index)
+{
+ return INTERPRETER_TRANSLATE(pkhbt)(inst, index);
+}
+
ARM_INST_PTR INTERPRETER_TRANSLATE(pld)(unsigned int inst, int index)
{
arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(pld_inst));
@@ -3249,14 +3278,66 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(blx_1_thumb)(unsigned int tinst, int index)
return inst_base;
}
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqadd16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQADD16"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqadd8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQADD8"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqaddsubx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQADDSUBX"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQSUB16"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQSUB8"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(uqsubaddx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UQSUBADDX"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(usad8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USAD8"); }
-ARM_INST_PTR INTERPRETER_TRANSLATE(usada8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USADA8"); }
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqadd8)(unsigned int inst, int index)
+{
+ arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(generic_arm_inst));
+ generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component;
+
+ inst_base->cond = BITS(inst, 28, 31);
+ inst_base->idx = index;
+ inst_base->br = NON_BRANCH;
+ inst_base->load_r15 = 0;
+
+ inst_cream->Rm = BITS(inst, 0, 3);
+ inst_cream->Rn = BITS(inst, 16, 19);
+ inst_cream->Rd = BITS(inst, 12, 15);
+ inst_cream->op1 = BITS(inst, 20, 21);
+ inst_cream->op2 = BITS(inst, 5, 7);
+
+ return inst_base;
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqadd16)(unsigned int inst, int index)
+{
+ return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqaddsubx)(unsigned int inst, int index)
+{
+ return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub8)(unsigned int inst, int index)
+{
+ return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqsub16)(unsigned int inst, int index)
+{
+ return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(uqsubaddx)(unsigned int inst, int index)
+{
+ return INTERPRETER_TRANSLATE(uqadd8)(inst, index);
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(usada8)(unsigned int inst, int index)
+{
+ arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(generic_arm_inst));
+ generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component;
+
+ inst_base->cond = BITS(inst, 28, 31);
+ inst_base->idx = index;
+ inst_base->br = NON_BRANCH;
+ inst_base->load_r15 = 0;
+
+ inst_cream->op1 = BITS(inst, 20, 24);
+ inst_cream->op2 = BITS(inst, 5, 7);
+ inst_cream->Rm = BITS(inst, 8, 11);
+ inst_cream->Rn = BITS(inst, 0, 3);
+ inst_cream->Ra = BITS(inst, 12, 15);
+
+ return inst_base;
+}
+ARM_INST_PTR INTERPRETER_TRANSLATE(usad8)(unsigned int inst, int index)
+{
+ return INTERPRETER_TRANSLATE(usada8)(inst, index);
+}
ARM_INST_PTR INTERPRETER_TRANSLATE(usat)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USAT"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(usat16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USAT16"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(usub16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("USUB16"); }
@@ -5607,8 +5688,34 @@ unsigned InterpreterMainLoop(ARMul_State* state)
FETCH_INST;
GOTO_NEXT_INST;
}
+
PKHBT_INST:
+ {
+ INC_ICOUNTER;
+ if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
+ pkh_inst *inst_cream = (pkh_inst *)inst_base->component;
+ RD = (RN & 0xFFFF) | ((RM << inst_cream->imm) & 0xFFFF0000);
+ }
+ cpu->Reg[15] += GET_INST_SIZE(cpu);
+ INC_PC(sizeof(pkh_inst));
+ FETCH_INST;
+ GOTO_NEXT_INST;
+ }
+
PKHTB_INST:
+ {
+ INC_ICOUNTER;
+ if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
+ pkh_inst *inst_cream = (pkh_inst *)inst_base->component;
+ int shift_imm = inst_cream->imm ? inst_cream->imm : 31;
+ RD = ((static_cast<s32>(RM) >> shift_imm) & 0xFFFF) | (RN & 0xFFFF0000);
+ }
+ cpu->Reg[15] += GET_INST_SIZE(cpu);
+ INC_PC(sizeof(pkh_inst));
+ FETCH_INST;
+ GOTO_NEXT_INST;
+ }
+
PLD_INST:
{
INC_ICOUNTER;
@@ -6876,14 +6983,101 @@ unsigned InterpreterMainLoop(ARMul_State* state)
goto DISPATCH;
}
- UQADD16_INST:
UQADD8_INST:
+ UQADD16_INST:
UQADDSUBX_INST:
- UQSUB16_INST:
UQSUB8_INST:
+ UQSUB16_INST:
UQSUBADDX_INST:
+ {
+ INC_ICOUNTER;
+
+ if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
+ generic_arm_inst* const inst_cream = (generic_arm_inst*)inst_base->component;
+
+ const u8 op2 = inst_cream->op2;
+ const u32 rm_val = RM;
+ const u32 rn_val = RN;
+
+ u16 lo_val = 0;
+ u16 hi_val = 0;
+
+ // UQADD16
+ if (op2 == 0x00) {
+ lo_val = ARMul_UnsignedSaturatedAdd16(rn_val & 0xFFFF, rm_val & 0xFFFF);
+ hi_val = ARMul_UnsignedSaturatedAdd16((rn_val >> 16) & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+ }
+ // UQASX
+ else if (op2 == 0x01) {
+ lo_val = ARMul_UnsignedSaturatedSub16(rn_val & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+ hi_val = ARMul_UnsignedSaturatedAdd16((rn_val >> 16) & 0xFFFF, rm_val & 0xFFFF);
+ }
+ // UQSAX
+ else if (op2 == 0x02) {
+ lo_val = ARMul_UnsignedSaturatedAdd16(rn_val & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+ hi_val = ARMul_UnsignedSaturatedSub16((rn_val >> 16) & 0xFFFF, rm_val & 0xFFFF);
+ }
+ // UQSUB16
+ else if (op2 == 0x03) {
+ lo_val = ARMul_UnsignedSaturatedSub16(rn_val & 0xFFFF, rm_val & 0xFFFF);
+ hi_val = ARMul_UnsignedSaturatedSub16((rn_val >> 16) & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+ }
+ // UQADD8
+ else if (op2 == 0x04) {
+ lo_val = ARMul_UnsignedSaturatedAdd8(rn_val, rm_val) |
+ ARMul_UnsignedSaturatedAdd8(rn_val >> 8, rm_val >> 8) << 8;
+ hi_val = ARMul_UnsignedSaturatedAdd8(rn_val >> 16, rm_val >> 16) |
+ ARMul_UnsignedSaturatedAdd8(rn_val >> 24, rm_val >> 24) << 8;
+ }
+ // UQSUB8
+ else {
+ lo_val = ARMul_UnsignedSaturatedSub8(rn_val, rm_val) |
+ ARMul_UnsignedSaturatedSub8(rn_val >> 8, rm_val >> 8) << 8;
+ hi_val = ARMul_UnsignedSaturatedSub8(rn_val >> 16, rm_val >> 16) |
+ ARMul_UnsignedSaturatedSub8(rn_val >> 24, rm_val >> 24) << 8;
+ }
+
+ RD = ((lo_val & 0xFFFF) | hi_val << 16);
+ }
+
+ cpu->Reg[15] += GET_INST_SIZE(cpu);
+ INC_PC(sizeof(generic_arm_inst));
+ FETCH_INST;
+ GOTO_NEXT_INST;
+ }
+
USAD8_INST:
USADA8_INST:
+ {
+ INC_ICOUNTER;
+
+ if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
+ generic_arm_inst* inst_cream = (generic_arm_inst*)inst_base->component;
+
+ const u8 ra_idx = inst_cream->Ra;
+ const u32 rm_val = RM;
+ const u32 rn_val = RN;
+
+ const u8 diff1 = ARMul_UnsignedAbsoluteDifference(rn_val & 0xFF, rm_val & 0xFF);
+ const u8 diff2 = ARMul_UnsignedAbsoluteDifference((rn_val >> 8) & 0xFF, (rm_val >> 8) & 0xFF);
+ const u8 diff3 = ARMul_UnsignedAbsoluteDifference((rn_val >> 16) & 0xFF, (rm_val >> 16) & 0xFF);
+ const u8 diff4 = ARMul_UnsignedAbsoluteDifference((rn_val >> 24) & 0xFF, (rm_val >> 24) & 0xFF);
+
+ u32 finalDif = (diff1 + diff2 + diff3 + diff4);
+
+ // Op is USADA8 if true.
+ if (ra_idx != 15)
+ finalDif += cpu->Reg[ra_idx];
+
+ RD = finalDif;
+ }
+
+ cpu->Reg[15] += GET_INST_SIZE(cpu);
+ INC_PC(sizeof(generic_arm_inst));
+ FETCH_INST;
+ GOTO_NEXT_INST;
+ }
+
USAT_INST:
USAT16_INST:
USUB16_INST:
diff --git a/src/core/arm/interpreter/armemu.cpp b/src/core/arm/interpreter/armemu.cpp
index 9b680c1e2..9c6602f09 100644
--- a/src/core/arm/interpreter/armemu.cpp
+++ b/src/core/arm/interpreter/armemu.cpp
@@ -3100,7 +3100,6 @@ mainswitch:
break;
case 0x68: /* Store Word, No WriteBack, Post Inc, Reg. */
- //ichfly PKHBT PKHTB todo check this
if ((instr & 0x70) == 0x10) { //pkhbt
u8 idest = BITS(12, 15);
u8 rfis = BITS(16, 19);
@@ -3109,18 +3108,11 @@ mainswitch:
state->Reg[idest] = (state->Reg[rfis] & 0xFFFF) | ((state->Reg[rlast] << ishi) & 0xFFFF0000);
break;
} else if ((instr & 0x70) == 0x50) { //pkhtb
- const u8 rd_idx = BITS(12, 15);
- const u8 rn_idx = BITS(16, 19);
- const u8 rm_idx = BITS(0, 3);
- const u8 imm5 = BITS(7, 11);
-
- ARMword val;
- if (imm5 >= 32)
- val = (state->Reg[rm_idx] >> 31);
- else
- val = (state->Reg[rm_idx] >> imm5);
-
- state->Reg[rd_idx] = (val & 0xFFFF) | ((state->Reg[rn_idx]) & 0xFFFF0000);
+ u8 rd_idx = BITS(12, 15);
+ u8 rn_idx = BITS(16, 19);
+ u8 rm_idx = BITS(0, 3);
+ u8 imm5 = BITS(7, 11) ? BITS(7, 11) : 31;
+ state->Reg[rd_idx] = ((static_cast<s32>(state->Reg[rm_idx]) >> imm5) & 0xFFFF) | ((state->Reg[rn_idx]) & 0xFFFF0000);
break;
} else if (BIT (4)) {
#ifdef MODE32
@@ -6117,26 +6109,55 @@ L_stm_s_takeabort:
}
printf("Unhandled v6 insn: uasx/usax\n");
break;
- case 0x66:
- if ((instr & 0x0FF00FF0) == 0x06600FF0) { //uqsub8
- u32 rd = (instr >> 12) & 0xF;
- u32 rm = (instr >> 16) & 0xF;
- u32 rn = (instr >> 0) & 0xF;
- u32 subfrom = state->Reg[rm];
- u32 tosub = state->Reg[rn];
-
- u8 b1 = (u8)((u8)(subfrom)-(u8)(tosub));
- if (b1 > (u8)(subfrom)) b1 = 0;
- u8 b2 = (u8)((u8)(subfrom >> 8) - (u8)(tosub >> 8));
- if (b2 > (u8)(subfrom >> 8)) b2 = 0;
- u8 b3 = (u8)((u8)(subfrom >> 16) - (u8)(tosub >> 16));
- if (b3 > (u8)(subfrom >> 16)) b3 = 0;
- u8 b4 = (u8)((u8)(subfrom >> 24) - (u8)(tosub >> 24));
- if (b4 > (u8)(subfrom >> 24)) b4 = 0;
- state->Reg[rd] = (u32)(b1 | b2 << 8 | b3 << 16 | b4 << 24);
+ case 0x66: // UQADD16, UQASX, UQSAX, UQSUB16, UQADD8, and UQSUB8
+ {
+ const u8 rd_idx = BITS(12, 15);
+ const u8 rm_idx = BITS(0, 3);
+ const u8 rn_idx = BITS(16, 19);
+ const u8 op2 = BITS(5, 7);
+ const u32 rm_val = state->Reg[rm_idx];
+ const u32 rn_val = state->Reg[rn_idx];
+
+ u16 lo_val = 0;
+ u16 hi_val = 0;
+
+ // UQADD16
+ if (op2 == 0x00) {
+ lo_val = ARMul_UnsignedSaturatedAdd16(rn_val & 0xFFFF, rm_val & 0xFFFF);
+ hi_val = ARMul_UnsignedSaturatedAdd16((rn_val >> 16) & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+ }
+ // UQASX
+ else if (op2 == 0x01) {
+ lo_val = ARMul_UnsignedSaturatedSub16(rn_val & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+ hi_val = ARMul_UnsignedSaturatedAdd16((rn_val >> 16) & 0xFFFF, rm_val & 0xFFFF);
+ }
+ // UQSAX
+ else if (op2 == 0x02) {
+ lo_val = ARMul_UnsignedSaturatedAdd16(rn_val & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+ hi_val = ARMul_UnsignedSaturatedSub16((rn_val >> 16) & 0xFFFF, rm_val & 0xFFFF);
+ }
+ // UQSUB16
+ else if (op2 == 0x03) {
+ lo_val = ARMul_UnsignedSaturatedSub16(rn_val & 0xFFFF, rm_val & 0xFFFF);
+ hi_val = ARMul_UnsignedSaturatedSub16((rn_val >> 16) & 0xFFFF, (rm_val >> 16) & 0xFFFF);
+ }
+ // UQADD8
+ else if (op2 == 0x04) {
+ lo_val = ARMul_UnsignedSaturatedAdd8(rn_val, rm_val) |
+ ARMul_UnsignedSaturatedAdd8(rn_val >> 8, rm_val >> 8) << 8;
+ hi_val = ARMul_UnsignedSaturatedAdd8(rn_val >> 16, rm_val >> 16) |
+ ARMul_UnsignedSaturatedAdd8(rn_val >> 24, rm_val >> 24) << 8;
+ }
+ // UQSUB8
+ else {
+ lo_val = ARMul_UnsignedSaturatedSub8(rn_val, rm_val) |
+ ARMul_UnsignedSaturatedSub8(rn_val >> 8, rm_val >> 8) << 8;
+ hi_val = ARMul_UnsignedSaturatedSub8(rn_val >> 16, rm_val >> 16) |
+ ARMul_UnsignedSaturatedSub8(rn_val >> 24, rm_val >> 24) << 8;
+ }
+
+ state->Reg[rd_idx] = ((lo_val & 0xFFFF) | hi_val << 16);
return 1;
- } else {
- printf ("Unhandled v6 insn: uqsub16\n");
}
break;
case 0x67: // UHADD16, UHASX, UHSAX, UHSUB16, UHADD8, and UHSUB8.
@@ -6643,10 +6664,10 @@ L_stm_s_takeabort:
const u32 rm_val = state->Reg[rm_idx];
const u32 rn_val = state->Reg[rn_idx];
- const u8 diff1 = (u8)std::labs((rn_val & 0xFF) - (rm_val & 0xFF));
- const u8 diff2 = (u8)std::labs(((rn_val >> 8) & 0xFF) - ((rm_val >> 8) & 0xFF));
- const u8 diff3 = (u8)std::labs(((rn_val >> 16) & 0xFF) - ((rm_val >> 16) & 0xFF));
- const u8 diff4 = (u8)std::labs(((rn_val >> 24) & 0xFF) - ((rm_val >> 24) & 0xFF));
+ const u8 diff1 = ARMul_UnsignedAbsoluteDifference(rn_val & 0xFF, rm_val & 0xFF);
+ const u8 diff2 = ARMul_UnsignedAbsoluteDifference((rn_val >> 8) & 0xFF, (rm_val >> 8) & 0xFF);
+ const u8 diff3 = ARMul_UnsignedAbsoluteDifference((rn_val >> 16) & 0xFF, (rm_val >> 16) & 0xFF);
+ const u8 diff4 = ARMul_UnsignedAbsoluteDifference((rn_val >> 24) & 0xFF, (rm_val >> 24) & 0xFF);
u32 finalDif = (diff1 + diff2 + diff3 + diff4);
diff --git a/src/core/arm/interpreter/armsupp.cpp b/src/core/arm/interpreter/armsupp.cpp
index 6774f8a74..8f158e2c8 100644
--- a/src/core/arm/interpreter/armsupp.cpp
+++ b/src/core/arm/interpreter/armsupp.cpp
@@ -392,6 +392,15 @@ ARMul_NthReg (ARMword instr, unsigned number)
return (bit - 1);
}
+/* Unsigned sum of absolute difference */
+u8 ARMul_UnsignedAbsoluteDifference(u8 left, u8 right)
+{
+ if (left > right)
+ return left - right;
+
+ return right - left;
+}
+
/* Assigns the N and Z flags depending on the value of result. */
void
@@ -469,6 +478,47 @@ ARMul_SubOverflow (ARMul_State * state, ARMword a, ARMword b, ARMword result)
ASSIGNV (SubOverflow (a, b, result));
}
+/* 8-bit unsigned saturated addition */
+u8 ARMul_UnsignedSaturatedAdd8(u8 left, u8 right)
+{
+ u8 result = left + right;
+
+ if (result < left)
+ result = 0xFF;
+
+ return result;
+}
+
+/* 16-bit unsigned saturated addition */
+u16 ARMul_UnsignedSaturatedAdd16(u16 left, u16 right)
+{
+ u16 result = left + right;
+
+ if (result < left)
+ result = 0xFFFF;
+
+ return result;
+}
+
+/* 8-bit unsigned saturated subtraction */
+u8 ARMul_UnsignedSaturatedSub8(u8 left, u8 right)
+{
+ if (left <= right)
+ return 0;
+
+ return left - right;
+}
+
+/* 16-bit unsigned saturated subtraction */
+u16 ARMul_UnsignedSaturatedSub16(u16 left, u16 right)
+{
+ if (left <= right)
+ return 0;
+
+ return left - right;
+}
+
+
/* This function does the work of generating the addresses used in an
LDC instruction. The code here is always post-indexed, it's up to the
caller to get the input address correct and to handle base register
diff --git a/src/core/arm/skyeye_common/armdefs.h b/src/core/arm/skyeye_common/armdefs.h
index 34eb5aaf7..c7509fcb2 100644
--- a/src/core/arm/skyeye_common/armdefs.h
+++ b/src/core/arm/skyeye_common/armdefs.h
@@ -790,6 +790,12 @@ extern void ARMul_FixSPSR(ARMul_State*, ARMword, ARMword);
extern void ARMul_ConsolePrint(ARMul_State*, const char*, ...);
extern void ARMul_SelectProcessor(ARMul_State*, unsigned);
+extern u8 ARMul_UnsignedSaturatedAdd8(u8, u8);
+extern u16 ARMul_UnsignedSaturatedAdd16(u16, u16);
+extern u8 ARMul_UnsignedSaturatedSub8(u8, u8);
+extern u16 ARMul_UnsignedSaturatedSub16(u16, u16);
+extern u8 ARMul_UnsignedAbsoluteDifference(u8, u8);
+
#define DIFF_LOG 0
#define SAVE_LOG 0