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new vector loads/stores

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This commit is contained in:
CocoSimone
2023-02-10 02:13:45 +01:00
parent 6d58728239
commit 3786a5fd3b
3 changed files with 63 additions and 12 deletions
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68
src/backend/core/rsp/instructions.cpp
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@@ -219,17 +219,6 @@ void RSP::lqv(u32 instr) {
}
}
void RSP::lrv(u32 instr) {
int e = E1(instr);
u32 addr = gpr[BASE(instr)] + SignExt7bit(OFFSET(instr), 4);
int start = 16 - ((addr & 0xf) - e);
addr &= 0xFFFFFFF0;
for(int i = start; i < 16; i++) {
vpr[VT(instr)].byte[BYTE_INDEX(i & 0xf)] = ReadByte(addr++);
}
}
void RSP::lpv(u32 instr) {
int e = E1(instr);
u32 addr = gpr[BASE(instr)] + SignExt7bit(OFFSET(instr), 3);
@@ -420,6 +409,63 @@ void RSP::spv(u32 instr) {
}
}
void RSP::srv(u32 instr) {
u32 address = gpr[BASE(instr)] + SignExt7bit(OFFSET(instr), 4);
int start = E1(instr);
int end = start + (address & 15);
int base = 16 - (address & 15);
address &= ~15;
for(int i = start; i < end; i++) {
WriteByte(address++, vpr[VT(instr)].byte[BYTE_INDEX((i + base) & 0xF)]);
}
}
void RSP::shv(u32 instr) {
u32 address = gpr[BASE(instr)] + SignExt7bit(OFFSET(instr), 4);
u32 in_addr_offset = address & 0x7;
address &= ~0x7;
int e = E1(instr);
for (int i = 0; i < 8; i++) {
int byte_index = (i * 2) + e;
u16 val = vpr[VT(instr)].byte[BYTE_INDEX(byte_index & 15)] << 1;
val |= vpr[VT(instr)].byte[BYTE_INDEX((byte_index + 1) & 15)] >> 7;
u8 b = val & 0xFF;
int ofs = in_addr_offset + (i * 2);
WriteByte(address + (ofs & 0xF), b);
}
}
void RSP::lhv(u32 instr) {
u32 address = gpr[BASE(instr)] + SignExt7bit(OFFSET(instr), 4);
u32 in_addr_offset = address & 0x7;
address &= ~0x7;
int e = E1(instr);
for (int i = 0; i < 8; i++) {
int ofs = ((16 - e) + (i * 2) + in_addr_offset) & 0xF;
u16 val = ReadByte(address + ofs);
val <<= 7;
vpr[VT(instr)].element[ELEMENT_INDEX(i)] = val;
}
}
void RSP::lrv(u32 instr) {
u32 address = gpr[BASE(instr)] + SignExt7bit(OFFSET(instr), 4);
int e = E1(instr);
int start = 16 - ((address & 15) - e);
address &= ~15;
for(int i = start; i < 16; i++) {
vpr[VT(instr)].byte[BYTE_INDEX(i & 0xF)] = ReadByte(address++);
}
}
void RSP::sfv(u32 instr) {
VPR& vt = vpr[VT(instr)];
u32 address = gpr[BASE(instr)] + SignExt7bit(OFFSET(instr), 4);