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This commit is contained in:
Rose Thompson 2024-06-04 15:11:03 -05:00
parent 07d66c246c
commit f0ed780745
1 changed files with 24 additions and 8 deletions
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32
fpga/rvvidaemon/rvvidaemon.c
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@ -74,8 +74,20 @@ typedef struct {
uint8_t GPREn : 1;
uint8_t FPREn : 1;
uint16_t CSRCount : 12;
} RequiredRVVI_t;
} RequiredRVVI_t; // total size is 241 bits or 30.25 bytes
typedef struct {
uint8_t fill : 1; // *** depends on the size of the RequiredRVVI_t
uint8_t RegAddress : 5;
uint64_t RegValue;
} FirstReg_t;
typedef struct {
uint8_t fill : 6; // *** depends on the size of the RequiredRVVI_t and FirstReg_t
uint8_t RegAddress : 5;
uint64_t RegValue;
} SecondReg_t;
void DecodeRVVI(uint8_t *payload, uint64_t * PC, uint32_t *insn);
@ -127,23 +139,22 @@ int main(int argc, char **argv){
printf("Here 4\n");
while(1) {
printf("listener: Waiting to recvfrom...\n");
//printf("listener: Waiting to recvfrom...\n");
numbytes = recvfrom(sockfd, buf, BUF_SIZ, 0, NULL, NULL);
headerbytes = (sizeof(struct ether_header));
payloadbytes = numbytes - headerbytes;
printf("listener: got frame %lu bytes\n", numbytes);
printf("payload size: %lu bytes\n", payloadbytes);
//printf("listener: got frame %lu bytes\n", numbytes);
//printf("payload size: %lu bytes\n", payloadbytes);
if (eh->ether_dhost[0] == DEST_MAC0 &&
eh->ether_dhost[1] == DEST_MAC1 &&
eh->ether_dhost[2] == DEST_MAC2 &&
eh->ether_dhost[3] == DEST_MAC3 &&
eh->ether_dhost[4] == DEST_MAC4 &&
eh->ether_dhost[5] == DEST_MAC5) {
printf("Correct destination MAC address\n");
//printf("Correct destination MAC address\n");
uint64_t PC;
uint32_t insn;
DecodeRVVI(buf + headerbytes, &PC, &insn);
printf("PC = %lx, insn = %x\n", PC, insn);
}
}
@ -155,8 +166,13 @@ int main(int argc, char **argv){
void DecodeRVVI(uint8_t *payload, uint64_t * PC, uint32_t *insn){
// you know this actually easiser in assembly. :(
RequiredRVVI_t *RequiredFields = (RequiredRVVI_t *) payload;
FirstReg_t FirstReg;
SecondReg_t SecondReg;
*PC = RequiredFields->PC;
*insn = RequiredFields->insn;
if(RequiredFields->GPREn)
printf("PC = %lx, insn = %x\n", *PC, *insn);
if(RequiredFields->GPREn){
FirstReg = *(FirstReg_t *) (payload + sizeof(RequiredRVVI_t) - 1);
printf("Wrote a reg\n");
}
}