OpenPunk/citra
1
0
Fork 0
mirror of https://github.com/citra-emu/citra.git synced 2024-11-14 17:20:06 +00:00
Code Issues Projects Releases Wiki Activity

dyncom: Add ARMv6K NOP and hint instructions to the decoding table

Browse Source
This commit is contained in:
Lioncash 2015-05-14 15:41:40 -04:00
parent 699b67d7cf
commit 8cd72428c9
2 changed files with 152 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/core/arm/dyncom/arm_dyncom_dec.cpp
View File

@ -198,6 +198,11 @@ const ISEITEM arm_instruction[] = {
{ "strexd", 2, ARMV6K, 20, 27, 0x0000001A, 4, 7, 0x00000009 },
{ "ldrexh", 2, ARMV6K, 20, 27, 0x0000001F, 4, 7, 0x00000009 },
{ "strexh", 2, ARMV6K, 20, 27, 0x0000001E, 4, 7, 0x00000009 },
{ "nop", 5, ARMV6K, 23, 27, 0x00000006, 22, 22, 0x00000000, 20, 21, 0x00000002, 16, 19, 0x00000000, 0, 7, 0x00000000 },
{ "yield", 5, ARMV6K, 23, 27, 0x00000006, 22, 22, 0x00000000, 20, 21, 0x00000002, 16, 19, 0x00000000, 0, 7, 0x00000001 },
{ "wfe", 5, ARMV6K, 23, 27, 0x00000006, 22, 22, 0x00000000, 20, 21, 0x00000002, 16, 19, 0x00000000, 0, 7, 0x00000002 },
{ "wfi", 5, ARMV6K, 23, 27, 0x00000006, 22, 22, 0x00000000, 20, 21, 0x00000002, 16, 19, 0x00000000, 0, 7, 0x00000003 },
{ "sev", 5, ARMV6K, 23, 27, 0x00000006, 22, 22, 0x00000000, 20, 21, 0x00000002, 16, 19, 0x00000000, 0, 7, 0x00000004 },
{ "swi", 1, 0, 24, 27, 0x0000000f },
{ "bbl", 1, 0, 25, 27, 0x00000005 },
};
@ -395,6 +400,11 @@ const ISEITEM arm_exclusion_code[] = {
{ "strexd", 0, ARMV6K, 0 },
{ "ldrexh", 0, ARMV6K, 0 },
{ "strexh", 0, ARMV6K, 0 },
{ "nop", 0, ARMV6K, 0 },
{ "yield", 0, ARMV6K, 0 },
{ "wfe", 0, ARMV6K, 0 },
{ "wfi", 0, ARMV6K, 0 },
{ "sev", 0, ARMV6K, 0 },
{ "swi", 0, 0, 0 },
{ "bbl", 0, 0, 0 },

154
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
View File

@ -2052,6 +2052,19 @@ static ARM_INST_PTR INTERPRETER_TRANSLATE(orr)(unsigned int inst, int index)
return inst_base;
}
// NOP introduced in ARMv6K.
static ARM_INST_PTR INTERPRETER_TRANSLATE(nop)(unsigned int inst, int index)
{
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst));
inst_base->cond = BITS(inst, 28, 31);
inst_base->idx = index;
inst_base->br = NON_BRANCH;
inst_base->load_r15 = 0;
return inst_base;
}
static ARM_INST_PTR INTERPRETER_TRANSLATE(pkhbt)(unsigned int inst, int index)
{
arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(pkh_inst));
@ -2343,6 +2356,18 @@ static ARM_INST_PTR INTERPRETER_TRANSLATE(setend)(unsigned int inst, int index)
return inst_base;
}
static ARM_INST_PTR INTERPRETER_TRANSLATE(sev)(unsigned int inst, int index)
{
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst));
inst_base->cond = BITS(inst, 28, 31);
inst_base->idx = index;
inst_base->br = NON_BRANCH;
inst_base->load_r15 = 0;
return inst_base;
}
static ARM_INST_PTR INTERPRETER_TRANSLATE(shadd8)(unsigned int inst, int index)
{
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(generic_arm_inst));
@ -3347,6 +3372,40 @@ static ARM_INST_PTR INTERPRETER_TRANSLATE(uxtb16)(unsigned int inst, int index)
return INTERPRETER_TRANSLATE(uxtab16)(inst, index);
}
static ARM_INST_PTR INTERPRETER_TRANSLATE(wfe)(unsigned int inst, int index)
{
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst));
inst_base->cond = BITS(inst, 28, 31);
inst_base->idx = index;
inst_base->br = NON_BRANCH;
inst_base->load_r15 = 0;
return inst_base;
}
static ARM_INST_PTR INTERPRETER_TRANSLATE(wfi)(unsigned int inst, int index)
{
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst));
inst_base->cond = BITS(inst, 28, 31);
inst_base->idx = index;
inst_base->br = NON_BRANCH;
inst_base->load_r15 = 0;
return inst_base;
}
static ARM_INST_PTR INTERPRETER_TRANSLATE(yield)(unsigned int inst, int index)
{
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst));
inst_base->cond = BITS(inst, 28, 31);
inst_base->idx = index;
inst_base->br = NON_BRANCH;
inst_base->load_r15 = 0;
return inst_base;
}
// Floating point VFPv3 structures and instructions
#define VFP_INTERPRETER_STRUCT
@ -3552,6 +3611,11 @@ const transop_fp_t arm_instruction_trans[] = {
INTERPRETER_TRANSLATE(strexd),
INTERPRETER_TRANSLATE(ldrexh),
INTERPRETER_TRANSLATE(strexh),
INTERPRETER_TRANSLATE(nop),
INTERPRETER_TRANSLATE(yield),
INTERPRETER_TRANSLATE(wfe),
INTERPRETER_TRANSLATE(wfi),
INTERPRETER_TRANSLATE(sev),
INTERPRETER_TRANSLATE(swi),
INTERPRETER_TRANSLATE(bbl),
@ -3727,7 +3791,8 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
#define FETCH_INST if (inst_base->br != NON_BRANCH) goto DISPATCH; \
inst_base = (arm_inst *)&inst_buf[ptr]
#define INC_PC(l) ptr += sizeof(arm_inst) + l
#define INC_PC(l) ptr += sizeof(arm_inst) + l
#define INC_PC_STUB ptr += sizeof(arm_inst)
// GCC and Clang have a C++ extension to support a lookup table of labels. Otherwise, fallback to a
// clunky switch statement.
@ -3932,16 +3997,21 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
case 188: goto STREXD_INST; \
case 189: goto LDREXH_INST; \
case 190: goto STREXH_INST; \
case 191: goto SWI_INST; \
case 192: goto BBL_INST; \
case 193: goto B_2_THUMB ; \
case 194: goto B_COND_THUMB ; \
case 195: goto BL_1_THUMB ; \
case 196: goto BL_2_THUMB ; \
case 197: goto BLX_1_THUMB ; \
case 198: goto DISPATCH; \
case 199: goto INIT_INST_LENGTH; \
case 200: goto END; \
case 191: goto NOP_INST; \
case 192: goto YIELD_INST; \
case 193: goto WFE_INST; \
case 194: goto WFI_INST; \
case 195: goto SEV_INST; \
case 196: goto SWI_INST; \
case 197: goto BBL_INST; \
case 198: goto B_2_THUMB ; \
case 199: goto B_COND_THUMB ; \
case 200: goto BL_1_THUMB ; \
case 201: goto BL_2_THUMB ; \
case 202: goto BLX_1_THUMB ; \
case 203: goto DISPATCH; \
case 204: goto INIT_INST_LENGTH; \
case 205: goto END; \
}
#endif
@ -3990,7 +4060,7 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
&&STRD_INST,&&LDRH_INST,&&STRH_INST,&&LDRD_INST,&&STRT_INST,&&STRBT_INST,&&LDRBT_INST,&&LDRT_INST,&&MRC_INST,&&MCR_INST,
&&MSR_INST, &&MSR_INST, &&MSR_INST, &&MSR_INST, &&MSR_INST,
&&LDRB_INST,&&STRB_INST,&&LDR_INST,&&LDRCOND_INST, &&STR_INST,&&CDP_INST,&&STC_INST,&&LDC_INST, &&LDREXD_INST,
&&STREXD_INST,&&LDREXH_INST,&&STREXH_INST, &&SWI_INST,&&BBL_INST,
&&STREXD_INST,&&LDREXH_INST,&&STREXH_INST, &&NOP_INST, &&YIELD_INST, &&WFE_INST, &&WFI_INST, &&SEV_INST, &&SWI_INST,&&BBL_INST,
&&B_2_THUMB, &&B_COND_THUMB,&&BL_1_THUMB, &&BL_2_THUMB, &&BLX_1_THUMB, &&DISPATCH,
&&INIT_INST_LENGTH,&&END
};
@ -5044,6 +5114,14 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
GOTO_NEXT_INST;
}
NOP_INST:
{
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC_STUB;
FETCH_INST;
GOTO_NEXT_INST;
}
PKHBT_INST:
{
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
@ -5527,6 +5605,19 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
GOTO_NEXT_INST;
}
SEV_INST:
{
// Stubbed, as SEV is a hint instruction.
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
LOG_TRACE(Core_ARM11, "SEV executed.");
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC_STUB;
FETCH_INST;
GOTO_NEXT_INST;
}
SHADD8_INST:
SHADD16_INST:
SHADDSUBX_INST:
@ -6990,6 +7081,45 @@ unsigned InterpreterMainLoop(ARMul_State* cpu) {
GOTO_NEXT_INST;
}
WFE_INST:
{
// Stubbed, as WFE is a hint instruction.
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
LOG_TRACE(Core_ARM11, "WFE executed.");
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC_STUB;
FETCH_INST;
GOTO_NEXT_INST;
}
WFI_INST:
{
// Stubbed, as WFI is a hint instruction.
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
LOG_TRACE(Core_ARM11, "WFI executed.");
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC_STUB;
FETCH_INST;
GOTO_NEXT_INST;
}
YIELD_INST:
{
// Stubbed, as YIELD is a hint instruction.
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
LOG_TRACE(Core_ARM11, "YIELD executed.");
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC_STUB;
FETCH_INST;
GOTO_NEXT_INST;
}
#define VFP_INTERPRETER_IMPL
#include "core/arm/skyeye_common/vfp/vfpinstr.cpp"
#undef VFP_INTERPRETER_IMPL