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This commit is contained in:
Ross Thompson 2024-06-11 16:21:53 -07:00
parent c9f3da51cb
commit 8bce2fc739
1 changed files with 22 additions and 5 deletions
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27
fpga/rvvidaemon/rvvidaemon.c
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@ -158,6 +158,9 @@ int main(int argc, char **argv){
void DecodeRVVI(uint8_t *payload, ssize_t payloadsize, uint64_t * PC, uint32_t *insn){
// you know this actually easiser in assembly. :(
uint8_t buf2[BUF_SIZ], buf3[BUF_SIZ];
uint8_t * buf2ptr, *buf3ptr;
buf2ptr = buf2;
buf3ptr = buf3;
//int PayloadSize = sizeof(RequiredRVVI_t) - 1;
int PayloadSize = 30;
int Buf2Size = BUF_SIZ - PayloadSize;
@ -175,9 +178,11 @@ void DecodeRVVI(uint8_t *payload, ssize_t payloadsize, uint64_t * PC, uint32_t *
uint32_t RequiredFlags;
RequiredFlags = * (uint32_t *) payload;
uint8_t Trap, PrivilegeMode, GPRWen, FPRWen;
uint16_t CSRCount;
uint8_t GPRReg;
uint64_t GPRData;
uint16_t CSRCount = 0;
uint8_t GPRReg = 0;
uint64_t GPRData = 0;
uint8_t FPRReg = 0;
uint64_t FPRData = 0;
Trap = RequiredFlags & 0x1;
PrivilegeMode = (RequiredFlags >> 1) & 0x3;
@ -203,10 +208,22 @@ void DecodeRVVI(uint8_t *payload, ssize_t payloadsize, uint64_t * PC, uint32_t *
}
printf("\n");
if(GPRWen){
GPRReg = * (uint8_t *) buf2;
GPRReg = * (uint8_t *) buf2ptr;
GPRReg = GPRReg & 0x1F;
BitShiftArray(buf3, buf2, 5, newPayloadSize);
BitShiftArray(buf3, buf2ptr, 5, newPayloadSize);
GPRData = * (uint64_t *) buf3;
if(FPRWen){
buf3ptr += 8;
FPRReg = * (uint8_t *) buf3ptr;
BitShiftArray(buf2, buf3ptr, 5, newPayloadSize - 8);
FPRReg = FPRReg & 0x1F;
FPRData = * (uint64_t *) buf2;
}
}else if(FPRWen){
FPRReg = * (uint8_t *) buf2;
FPRReg = FPRReg & 0x1F;
BitShiftArray(buf3, buf2, 5, newPayloadSize);
FPRData = * (uint64_t *) buf3;
}
printf("Wrote register %d with value = %lx\n", GPRReg, GPRData);
int bits;