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Add offset and append switch to file device.

This commit is contained in:
Andrew Alderwick 2021-03-23 19:40:03 +00:00
parent 2e90428b0c
commit 88fb08c2b2
2 changed files with 8 additions and 6 deletions
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7
src/debugger.c
View File

@ -59,17 +59,18 @@ file_poke(Uxn *u, Uint16 ptr, Uint8 b0, Uint8 b1)
Uint8 *m = u->ram.dat; Uint8 *m = u->ram.dat;
char *name = (char *)&m[(m[ptr + 8] << 8) + m[ptr + 8 + 1]]; char *name = (char *)&m[(m[ptr + 8] << 8) + m[ptr + 8 + 1]];
Uint16 length = (m[ptr + 8 + 2] << 8) + m[ptr + 8 + 3]; Uint16 length = (m[ptr + 8 + 2] << 8) + m[ptr + 8 + 3];
Uint16 offset = (m[ptr + 0] << 8) + m[ptr + 1];
if(b0 == 0x0d) { if(b0 == 0x0d) {
Uint16 addr = (m[ptr + 8 + 4] << 8) + b1; Uint16 addr = (m[ptr + 8 + 4] << 8) + b1;
FILE *f = fopen(name, "r"); FILE *f = fopen(name, "r");
if(f && fread(&m[addr], length, 1, f)) { if(f && fseek(f, offset, SEEK_SET) != -1 && fread(&m[addr], length, 1, f)) {
fclose(f); fclose(f);
printf("Loaded %d bytes, at %04x from %s\n", length, addr, name); printf("Loaded %d bytes, at %04x from %s\n", length, addr, name);
} }
} else if(b0 == 0x0f) { } else if(b0 == 0x0f) {
Uint16 addr = (m[ptr + 8 + 6] << 8) + b1; Uint16 addr = (m[ptr + 8 + 6] << 8) + b1;
FILE *f = fopen(name, "w"); FILE *f = fopen(name, (m[ptr + 2] & 0x1) ? "a" : "w");
if(fwrite(&m[addr], length, 1, f)) { if(f && fseek(f, offset, SEEK_SET) != -1 && fwrite(&m[addr], length, 1, f)) {
fclose(f); fclose(f);
printf("Saved %d bytes, at %04x from %s\n", length, addr, name); printf("Saved %d bytes, at %04x from %s\n", length, addr, name);
} }

7
src/emulator.c
View File

@ -365,17 +365,18 @@ file_poke(Uxn *u, Uint16 ptr, Uint8 b0, Uint8 b1)
Uint8 *m = u->ram.dat; Uint8 *m = u->ram.dat;
char *name = (char *)&m[(m[ptr + 8] << 8) + m[ptr + 8 + 1]]; char *name = (char *)&m[(m[ptr + 8] << 8) + m[ptr + 8 + 1]];
Uint16 length = (m[ptr + 8 + 2] << 8) + m[ptr + 8 + 3]; Uint16 length = (m[ptr + 8 + 2] << 8) + m[ptr + 8 + 3];
Uint16 offset = (m[ptr + 0] << 8) + m[ptr + 1];
if(b0 == 0x0d) { if(b0 == 0x0d) {
Uint16 addr = (m[ptr + 8 + 4] << 8) + b1; Uint16 addr = (m[ptr + 8 + 4] << 8) + b1;
FILE *f = fopen(name, "r"); FILE *f = fopen(name, "r");
if(f && fread(&m[addr], length, 1, f)) { if(f && fseek(f, offset, SEEK_SET) != -1 && fread(&m[addr], length, 1, f)) {
fclose(f); fclose(f);
printf("Loaded %d bytes, at %04x from %s\n", length, addr, name); printf("Loaded %d bytes, at %04x from %s\n", length, addr, name);
} }
} else if(b0 == 0x0f) { } else if(b0 == 0x0f) {
Uint16 addr = (m[ptr + 8 + 6] << 8) + b1; Uint16 addr = (m[ptr + 8 + 6] << 8) + b1;
FILE *f = fopen(name, "w"); FILE *f = fopen(name, (m[ptr + 2] & 0x1) ? "a" : "w");
if(fwrite(&m[addr], length, 1, f)) { if(f && fseek(f, offset, SEEK_SET) != -1 && fwrite(&m[addr], length, 1, f)) {
fclose(f); fclose(f);
printf("Saved %d bytes, at %04x from %s\n", length, addr, name); printf("Saved %d bytes, at %04x from %s\n", length, addr, name);
} }