Forks/citra
1
0
Fork 0
mirror of https://github.com/PabloMK7/citra.git synced 2025-10-31 13:50:03 +00:00
Code Issues Projects Releases Packages Wiki Activity

Merge pull request #296 from lioncash/dyn

Browse source 
dyncom: Implement UMAAL
This commit is contained in:
bunnei 2014-12-20 16:24:12 -05:00
commit 0e9262885d
1 changed files with 47 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

48
src/core/arm/dyncom/arm_dyncom_interpreter.cpp
View file

@ -1266,6 +1266,13 @@ typedef struct _smla_inst {
unsigned int Rn;
} smla_inst;
typedef struct umaal_inst {
unsigned int Rn;
unsigned int Rm;
unsigned int RdHi;
unsigned int RdLo;
} umaal_inst;
typedef struct _umlal_inst {
unsigned int S;
unsigned int Rm;
@ -3010,7 +3017,26 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(uhaddsubx)(unsigned int inst, int index) { UN
ARM_INST_PTR INTERPRETER_TRANSLATE(uhsub16)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UHSUB16"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uhsub8)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UHSUB8"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(uhsubaddx)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UHSUBADDX"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(umaal)(unsigned int inst, int index) { UNIMPLEMENTED_INSTRUCTION("UMAAL"); }
ARM_INST_PTR INTERPRETER_TRANSLATE(umaal)(unsigned int inst, int index)
{
arm_inst* const inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(umaal_inst));
umaal_inst* const inst_cream = (umaal_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, 8, 11);
inst_cream->Rn = BITS(inst, 0, 3);
inst_cream->RdLo = BITS(inst, 12, 15);
inst_cream->RdHi = BITS(inst, 16, 19);
if (CHECK_RM || CHECK_RN)
inst_base->load_r15 = 1;
return inst_base;
}
ARM_INST_PTR INTERPRETER_TRANSLATE(umlal)(unsigned int inst, int index)
{
arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(umlal_inst));
@ -6374,6 +6400,26 @@ unsigned InterpreterMainLoop(ARMul_State* state)
UHSUB8_INST:
UHSUBADDX_INST:
UMAAL_INST:
{
INC_ICOUNTER;
if (inst_base->cond == 0xE || CondPassed(cpu, inst_base->cond)) {
umaal_inst* const inst_cream = (umaal_inst*)inst_base->component;
const u32 rm = RM;
const u32 rn = RN;
const u32 rd_lo = RDLO;
const u32 rd_hi = RDHI;
const u64 result = (rm * rn) + rd_lo + rd_hi;
RDLO = (result & 0xFFFFFFFF);
RDHI = ((result >> 32) & 0xFFFFFFFF);
}
cpu->Reg[15] += GET_INST_SIZE(cpu);
INC_PC(sizeof(umaal_inst));
FETCH_INST;
GOTO_NEXT_INST;
}
UMLAL_INST:
{
INC_ICOUNTER;