diff options
Diffstat (limited to 'sources/meta/exec.c')
| -rw-r--r-- | sources/meta/exec.c | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/sources/meta/exec.c b/sources/meta/exec.c new file mode 100644 index 0000000..69e9a8a --- /dev/null +++ b/sources/meta/exec.c @@ -0,0 +1,82 @@ +#define BEGIN \ +do{ \ + chip8* c8 = usrdat; \ + assert(c8); + +#define END }while(0) + +#define X_C8_ILL \ +BEGIN \ + \ + c8->running = false; \ + report(ERR, "Illegal instruction (%04X) @ %04X\n", instr, offset); \ +END + +#define X_C8_CLS X_C8_ILL +#define X_C8_RET X_C8_ILL +#define X_C8_SYS X_C8_ILL + +#define X_C8_JP \ +BEGIN \ + c8->pc = nnn - 2; \ +END + +#define X_C8_CALL X_C8_ILL +#define X_C8_LDI X_C8_ILL +#define X_C8_JPV X_C8_ILL + +#define X_C8_SEB \ +BEGIN \ + if(c8->V[x] == kk) c8->pc += 2; \ +END + +#define X_C8_SNEB X_C8_ILL + +#define X_C8_LD \ +BEGIN \ + c8->V[x] = kk; \ +END + +#define X_C8_ADDB \ +BEGIN \ + int tmp = (int)c8->V[x] + (int)kk; \ + c8->V[x] = tmp & 0xFF; \ +END + +#define X_C8_RND X_C8_ILL +#define X_C8_SKP X_C8_ILL +#define X_C8_SKNP X_C8_ILL +#define X_C8_MVDT X_C8_ILL +#define X_C8_LDK X_C8_ILL +#define X_C8_LDDT X_C8_ILL +#define X_C8_LDST X_C8_ILL +#define X_C8_ADDI X_C8_ILL +#define X_C8_HEX X_C8_ILL +#define X_C8_BCD X_C8_ILL +#define X_C8_SAVE X_C8_ILL +#define X_C8_RESTORE X_C8_ILL +#define X_C8_SE X_C8_ILL +#define X_C8_MOVE X_C8_ILL +#define X_C8_OR X_C8_ILL +#define X_C8_AND X_C8_ILL +#define X_C8_XOR X_C8_ILL + +#define X_C8_ADD \ +BEGIN \ + int tmp = (int)c8->V[x] + (int)c8->V[y]; \ + c8->V[0xf] = (tmp > 255); \ + c8->V[x] = tmp & 0xFF; \ +END + +#define X_C8_SUB X_C8_ILL +#define X_C8_SHR X_C8_ILL +#define X_C8_SUBN X_C8_ILL +#define X_C8_SHL X_C8_ILL +#define X_C8_SNE X_C8_ILL +#define X_C8_DRW X_C8_ILL + +c8_decode_generate(exec) + +#undef BEGIN +#undef END +#include "undef.c" |