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dyncom: Make Load/Store instructions support big endian

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This commit is contained in:
Lioncash 2015-03-11 16:10:14 -04:00
parent f280806214
commit 9fdb311d6e
7 changed files with 204 additions and 81 deletions
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3
src/core/arm/skyeye_common/armdefs.h
View file

@ -18,7 +18,6 @@
#pragma once
#include "common/common_types.h"
#include "core/arm/skyeye_common/armmmu.h"
#include "core/arm/skyeye_common/arm_regformat.h"
#include "core/arm/skyeye_common/skyeye_defs.h"
@ -356,3 +355,5 @@ extern u16 ARMul_UnsignedSaturatedSub16(u16, u16);
extern u8 ARMul_UnsignedAbsoluteDifference(u8, u8);
extern u32 ARMul_SignedSatQ(s32, u8, bool*);
extern u32 ARMul_UnsignedSatQ(s32, u8, bool*);
extern bool InBigEndianMode(ARMul_State*);

55
src/core/arm/skyeye_common/armmmu.h
View file

@ -20,6 +20,9 @@
#pragma once
#include "core/mem_map.h"
#include "core/arm/skyeye_common/armdefs.h"
// Register numbers in the MMU
enum
{
@ -54,3 +57,55 @@ enum
XSCALE_CP15_AUX_CONTROL = 1,
XSCALE_CP15_COPRO_ACCESS = 15,
};
// Reads data in big/little endian format based on the
// state of the E (endian) bit in the emulated CPU's APSR.
inline u16 ReadMemory16(ARMul_State* cpu, u32 address) {
u16 data = Memory::Read16(address);
if (InBigEndianMode(cpu))
data = Common::swap16(data);
return data;
}
inline u32 ReadMemory32(ARMul_State* cpu, u32 address) {
u32 data = Memory::Read32(address);
if (InBigEndianMode(cpu))
data = Common::swap32(data);
return data;
}
inline u64 ReadMemory64(ARMul_State* cpu, u32 address) {
u64 data = Memory::Read64(address);
if (InBigEndianMode(cpu))
data = Common::swap64(data);
return data;
}
// Writes data in big/little endian format based on the
// state of the E (endian) bit in the emulated CPU's APSR.
inline void WriteMemory16(ARMul_State* cpu, u32 address, u16 data) {
if (InBigEndianMode(cpu))
data = Common::swap16(data);
Memory::Write16(address, data);
}
inline void WriteMemory32(ARMul_State* cpu, u32 address, u32 data) {
if (InBigEndianMode(cpu))
data = Common::swap32(data);
Memory::Write32(address, data);
}
inline void WriteMemory64(ARMul_State* cpu, u32 address, u64 data) {
if (InBigEndianMode(cpu))
data = Common::swap64(data);
Memory::Write64(address, data);
}

100
src/core/arm/skyeye_common/vfp/vfpinstr.cpp
View file

@ -1388,12 +1388,20 @@ VSTR_INST:
if (inst_cream->single)
{
Memory::Write32(addr, cpu->ExtReg[inst_cream->d]);
WriteMemory32(cpu, addr, cpu->ExtReg[inst_cream->d]);
}
else
{
Memory::Write32(addr, cpu->ExtReg[inst_cream->d*2]);
Memory::Write32(addr + 4, cpu->ExtReg[inst_cream->d*2+1]);
const u32 word1 = cpu->ExtReg[inst_cream->d*2+0];
const u32 word2 = cpu->ExtReg[inst_cream->d*2+1];
if (InBigEndianMode(cpu)) {
WriteMemory32(cpu, addr + 0, word2);
WriteMemory32(cpu, addr + 4, word1);
} else {
WriteMemory32(cpu, addr + 0, word1);
WriteMemory32(cpu, addr + 4, word2);
}
}
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
@ -1447,17 +1455,27 @@ VPUSH_INST:
{
if (inst_cream->single)
{
Memory::Write32(addr, cpu->ExtReg[inst_cream->d+i]);
WriteMemory32(cpu, addr, cpu->ExtReg[inst_cream->d+i]);
addr += 4;
}
else
{
Memory::Write32(addr, cpu->ExtReg[(inst_cream->d+i)*2]);
Memory::Write32(addr + 4, cpu->ExtReg[(inst_cream->d+i)*2 + 1]);
const u32 word1 = cpu->ExtReg[(inst_cream->d+i)*2+0];
const u32 word2 = cpu->ExtReg[(inst_cream->d+i)*2+1];
if (InBigEndianMode(cpu)) {
WriteMemory32(cpu, addr + 0, word2);
WriteMemory32(cpu, addr + 4, word1);
} else {
WriteMemory32(cpu, addr + 0, word1);
WriteMemory32(cpu, addr + 4, word2);
}
addr += 8;
}
}
cpu->Reg[R13] = cpu->Reg[R13] - inst_cream->imm32;
cpu->Reg[R13] -= inst_cream->imm32;
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(vpush_inst));
@ -1516,13 +1534,22 @@ VSTM_INST: /* encoding 1 */
{
if (inst_cream->single)
{
Memory::Write32(addr, cpu->ExtReg[inst_cream->d+i]);
WriteMemory32(cpu, addr, cpu->ExtReg[inst_cream->d+i]);
addr += 4;
}
else
{
Memory::Write32(addr, cpu->ExtReg[(inst_cream->d+i)*2]);
Memory::Write32(addr + 4, cpu->ExtReg[(inst_cream->d+i)*2 + 1]);
const u32 word1 = cpu->ExtReg[(inst_cream->d+i)*2+0];
const u32 word2 = cpu->ExtReg[(inst_cream->d+i)*2+1];
if (InBigEndianMode(cpu)) {
WriteMemory32(cpu, addr + 0, word2);
WriteMemory32(cpu, addr + 4, word1);
} else {
WriteMemory32(cpu, addr + 0, word1);
WriteMemory32(cpu, addr + 4, word2);
}
addr += 8;
}
}
@ -1575,8 +1602,6 @@ VPOP_INST:
if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) {
CHECK_VFP_ENABLED;
unsigned int value1, value2;
vpop_inst *inst_cream = (vpop_inst *)inst_base->component;
addr = cpu->Reg[R13];
@ -1585,20 +1610,26 @@ VPOP_INST:
{
if (inst_cream->single)
{
value1 = Memory::Read32(addr);
cpu->ExtReg[inst_cream->d+i] = value1;
cpu->ExtReg[inst_cream->d+i] = ReadMemory32(cpu, addr);
addr += 4;
}
else
{
value1 = Memory::Read32(addr);
value2 = Memory::Read32(addr + 4);
cpu->ExtReg[(inst_cream->d+i)*2] = value1;
cpu->ExtReg[(inst_cream->d+i)*2 + 1] = value2;
const u32 word1 = ReadMemory32(cpu, addr + 0);
const u32 word2 = ReadMemory32(cpu, addr + 4);
if (InBigEndianMode(cpu)) {
cpu->ExtReg[(inst_cream->d+i)*2+0] = word2;
cpu->ExtReg[(inst_cream->d+i)*2+1] = word1;
} else {
cpu->ExtReg[(inst_cream->d+i)*2+0] = word1;
cpu->ExtReg[(inst_cream->d+i)*2+1] = word2;
}
addr += 8;
}
}
cpu->Reg[R13] = cpu->Reg[R13] + inst_cream->imm32;
cpu->Reg[R13] += inst_cream->imm32;
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(vpop_inst));
@ -1653,16 +1684,20 @@ VLDR_INST:
if (inst_cream->single)
{
cpu->ExtReg[inst_cream->d] = Memory::Read32(addr);
cpu->ExtReg[inst_cream->d] = ReadMemory32(cpu, addr);
}
else
{
unsigned int word1, word2;
word1 = Memory::Read32(addr);
word2 = Memory::Read32(addr + 4);
const u32 word1 = ReadMemory32(cpu, addr + 0);
const u32 word2 = ReadMemory32(cpu, addr + 4);
cpu->ExtReg[inst_cream->d*2] = word1;
cpu->ExtReg[inst_cream->d*2+1] = word2;
if (InBigEndianMode(cpu)) {
cpu->ExtReg[inst_cream->d*2+0] = word2;
cpu->ExtReg[inst_cream->d*2+1] = word1;
} else {
cpu->ExtReg[inst_cream->d*2+0] = word1;
cpu->ExtReg[inst_cream->d*2+1] = word2;
}
}
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
@ -1722,13 +1757,22 @@ VLDM_INST:
{
if (inst_cream->single)
{
cpu->ExtReg[inst_cream->d+i] = Memory::Read32(addr);
cpu->ExtReg[inst_cream->d+i] = ReadMemory32(cpu, addr);
addr += 4;
}
else
{
cpu->ExtReg[(inst_cream->d+i)*2] = Memory::Read32(addr);
cpu->ExtReg[(inst_cream->d+i)*2 + 1] = Memory::Read32(addr + 4);
const u32 word1 = ReadMemory32(cpu, addr + 0);
const u32 word2 = ReadMemory32(cpu, addr + 4);
if (InBigEndianMode(cpu)) {
cpu->ExtReg[(inst_cream->d+i)*2+0] = word2;
cpu->ExtReg[(inst_cream->d+i)*2+1] = word1;
} else {
cpu->ExtReg[(inst_cream->d+i)*2+0] = word1;
cpu->ExtReg[(inst_cream->d+i)*2+1] = word2;
}
addr += 8;
}
}