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-rw-r--r--src/core/arm/dyncom/arm_dyncom_interpreter.cpp34
1 files changed, 24 insertions, 10 deletions
diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
index 6052e4f58..d0347566c 100644
--- a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
+++ b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp
@@ -1840,17 +1840,24 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(ldrsh)(unsigned int inst, int index)
}
ARM_INST_PTR INTERPRETER_TRANSLATE(ldrt)(unsigned int inst, int index)
{
- arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(ldst_inst));
- ldst_inst *inst_cream = (ldst_inst *)inst_base->component;
+ arm_inst* inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(ldst_inst));
+ ldst_inst* inst_cream = (ldst_inst*)inst_base->component;
inst_base->cond = BITS(inst, 28, 31);
- inst_base->idx = index;
- inst_base->br = NON_BRANCH;
+ inst_base->idx = index;
+ inst_base->br = NON_BRANCH;
inst_cream->inst = inst;
- if (I_BIT == 0) {
+ if (BITS(inst, 25, 27) == 2) {
inst_cream->get_addr = LnSWoUB(ImmediatePostIndexed);
+ } else if (BITS(inst, 25, 27) == 3) {
+ inst_cream->get_addr = LnSWoUB(ScaledRegisterPostIndexed);
} else {
+ // Reaching this would indicate the thumb version
+ // of this instruction, however the 3DS CPU doesn't
+ // support this variant (the 3DS CPU is only ARMv6K,
+ // while this variant is added in ARMv6T2).
+ // So it's sufficient for citra to not implement this.
DEBUG_MSG;
}
@@ -2792,17 +2799,24 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(strh)(unsigned int inst, int index)
}
ARM_INST_PTR INTERPRETER_TRANSLATE(strt)(unsigned int inst, int index)
{
- arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(ldst_inst));
- ldst_inst *inst_cream = (ldst_inst *)inst_base->component;
+ arm_inst* inst_base = (arm_inst*)AllocBuffer(sizeof(arm_inst) + sizeof(ldst_inst));
+ ldst_inst* inst_cream = (ldst_inst*)inst_base->component;
inst_base->cond = BITS(inst, 28, 31);
- inst_base->idx = index;
- inst_base->br = NON_BRANCH;
+ inst_base->idx = index;
+ inst_base->br = NON_BRANCH;
inst_cream->inst = inst;
- if (I_BIT == 0) {
+ if (BITS(inst, 25, 27) == 2) {
inst_cream->get_addr = LnSWoUB(ImmediatePostIndexed);
+ } else if (BITS(inst, 25, 27) == 3) {
+ inst_cream->get_addr = LnSWoUB(ScaledRegisterPostIndexed);
} else {
+ // Reaching this would indicate the thumb version
+ // of this instruction, however the 3DS CPU doesn't
+ // support this variant (the 3DS CPU is only ARMv6K,
+ // while this variant is added in ARMv6T2).
+ // So it's sufficient for citra to not implement this.
DEBUG_MSG;
}