summaryrefslogtreecommitdiff
path: root/asmmon.c
diff options
context:
space:
mode:
Diffstat (limited to 'asmmon.c')
-rw-r--r--asmmon.c359
1 files changed, 359 insertions, 0 deletions
diff --git a/asmmon.c b/asmmon.c
new file mode 100644
index 0000000..fd7c636
--- /dev/null
+++ b/asmmon.c
@@ -0,0 +1,359 @@
+#include "opcode.h"
+#include <string.h>
+
+#define SETOP(num, _mne, _IMM, _ZM, _ZMX, _ZMY, _ABS, _IMPL) \
+{opcodes[num].mnemonic[3] = '\0'; strncpy(opcodes[num].mnemonic, _mne, 3); \
+opcodes[num].imm = _IMM; \
+opcodes[num].zm = _ZM; opcodes[num].zmx = _ZMX; opcodes[num].zmy = _ZMY; \
+opcodes[num].abs = _ABS; opcodes[num].impl = _IMPL;}
+
+int asmmon() {
+ opent opcodes[79];
+ /* mne IMM ZM ZMX ZMY ABS IMPL*/
+ SETOP(0, "CPS", 0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
+ SETOP(1, "ADC", 0x01, 0x05, 0x00, 0x00, 0x03, 0x00);
+ SETOP(2, "PHP", 0x08, 0x00, 0x00, 0x00, 0x00, 0x00);
+ SETOP(3, "PHA", 0x09, 0x00, 0x00, 0x00, 0x00, 0x00);
+ SETOP(4, "PHY", 0x0A, 0x00, 0x00, 0x00, 0x00, 0x00);
+ SETOP(5, "PHX", 0x0C, 0x00, 0x00, 0x00, 0x00, 0x00);
+ SETOP(6, "JMP", 0x00, 0xD0, 0x00, 0x00, 0x10, 0x00);
+ SETOP(7, "SBC", 0x11, 0x15, 0x00, 0x00, 0x13, 0x00);
+ SETOP(8, "PLP", 0x18, 0x00, 0x00, 0x00, 0x00, 0x00);
+ SETOP(9, "PLA", 0x19, 0x00, 0x00, 0x00, 0x00, 0x00);
+ SETOP(10, "PLY", 0x1A, 0x00, 0x00, 0x00, 0x00, 0x00);
+ SETOP(11, "PLX", 0x1C, 0x00, 0x00, 0x00, 0x00, 0x00);
+ SETOP(12, "JSR", 0x00, 0x20, 0x00, 0x00, 0x00, 0x00);
+ SETOP(13, "AND", 0x21, 0x2B, 0x00, 0x00, 0x29, 0x00);
+ SETOP(14, "ANY", 0x22, 0x82, 0x00, 0x00, 0x52, 0x00);
+ SETOP(15, "AAY", 0x00, 0x00, 0x00, 0x00, 0x00, 0x23);
+ SETOP(16, "ANX", 0x24, 0x84, 0x00, 0x00, 0x54, 0x00);
+ SETOP(17, "AAX", 0x00, 0x00, 0x00, 0x00, 0x00, 0x25);
+ SETOP(18, "STT", 0x28, 0x00, 0x00, 0x00, 0x00, 0x00);
+ SETOP(19, "BPO", 0x00, 0x00, 0x00, 0x00, 0x30, 0x00);
+ SETOP(20, "ORA", 0x31, 0x3B, 0x00, 0x00, 0x39, 0x00);
+ SETOP(21, "ORY", 0x32, 0x00, 0x00, 0x00, 0x62, 0x00);
+ SETOP(22, "OAY", 0x00, 0x00, 0x00, 0x00, 0x00, 0x33);
+ SETOP(23, "ORX", 0x34, 0x94, 0x00, 0x00, 0x64, 0x00);
+ SETOP(24, "OAX", 0x00, 0x00, 0x00, 0x00, 0x00, 0x35);
+ SETOP(25, "SEI", 0x00, 0x00, 0x00, 0x00, 0x00, 0x38);
+ SETOP(26, "BNG", 0x00, 0x00, 0x00, 0x00, 0x40, 0x00);
+ SETOP(27, "XOR", 0x41, 0x4B, 0x00, 0x00, 0x49, 0x00);
+ SETOP(28, "XRY", 0x42, 0xA2, 0x00, 0x00, 0x72, 0x00);
+ SETOP(29, "XAY", 0x00, 0x00, 0x00, 0x00, 0x00, 0x43);
+ SETOP(30, "XRX", 0x44, 0xA4, 0x00, 0x00, 0x74, 0x00);
+ SETOP(31, "XAX", 0x00, 0x00, 0x00, 0x00, 0x00, 0x45);
+ SETOP(32, "CLI", 0x00, 0x00, 0x00, 0x00, 0x00, 0x48);
+ SETOP(33, "BCS", 0x00, 0x00, 0x00, 0x00, 0x50, 0x00);
+ SETOP(34, "LSL", 0x51, 0x55, 0x00, 0x00, 0x53, 0x00);
+ SETOP(35, "SEC", 0x00, 0x00, 0x00, 0x00, 0x00, 0x58);
+ SETOP(36, "STA", 0x00, 0x7B, 0x8B, 0x9B, 0x5B, 0x00);
+ SETOP(37, "STY", 0x00, 0x7D, 0x8D, 0x00, 0x5D, 0x00);
+ SETOP(38, "STX", 0x00, 0x7E, 0x00, 0x9E, 0x5E, 0x00);
+ SETOP(39, "BCC", 0x00, 0x00, 0x00, 0x00, 0x60, 0x00);
+ SETOP(40, "LSR", 0x61, 0x65, 0x00, 0x00, 0x63, 0x00);
+ SETOP(41, "CLC", 0x00, 0x00, 0x00, 0x00, 0x00, 0x68);
+ SETOP(42, "LDA", 0x69, 0x79, 0x89, 0x99, 0x59, 0x00);
+ SETOP(43, "LDY", 0x6A, 0x7A, 0x8A, 0x00, 0x5A, 0x00);
+ SETOP(44, "LDX", 0x6C, 0x7C, 0x00, 0x9C, 0x5C, 0x00);
+ SETOP(45, "BEQ", 0x00, 0x00, 0x00, 0x00, 0x70, 0x00);
+ SETOP(46, "ROL", 0x71, 0x75, 0x00, 0x00, 0x73, 0x00);
+ SETOP(47, "SSP", 0x00, 0x00, 0x00, 0x00, 0x00, 0x78);
+ SETOP(48, "BNE", 0x00, 0x00, 0x00, 0x00, 0x80, 0x00);
+ SETOP(49, "ROL", 0x81, 0x85, 0x00, 0x00, 0x83, 0x00);
+ SETOP(50, "CSP", 0x00, 0x00, 0x00, 0x00, 0x00, 0x88);
+ SETOP(51, "BVS", 0x00, 0x00, 0x00, 0x00, 0x90, 0x00);
+ SETOP(52, "MUL", 0x91, 0x95, 0x00, 0x00, 0x93, 0x00);
+ SETOP(53, "SEV", 0x00, 0x00, 0x00, 0x00, 0x00, 0x98);
+ SETOP(54, "BVC", 0x00, 0x00, 0x00, 0x00, 0xA0, 0x00);
+ SETOP(55, "DIV", 0xA1, 0xA5, 0x00, 0x00, 0xA3, 0x00);
+ SETOP(56, "CLV", 0x00, 0x00, 0x00, 0x00, 0x00, 0xA8);
+ SETOP(57, "RTS", 0x00, 0x00, 0x00, 0x00, 0x00, 0xB0);
+ SETOP(58, "CMP", 0xB1, 0xF5, 0x00, 0x00, 0xE5, 0x00);
+ SETOP(59, "CPY", 0xB2, 0xF2, 0x00, 0x00, 0xE2, 0x00);
+ SETOP(60, "CAY", 0x00, 0x00, 0x00, 0x00, 0x00, 0xB3);
+ SETOP(61, "CPX", 0xB4, 0xF4, 0x00, 0x00, 0xE4, 0x00);
+ SETOP(62, "CAX", 0x00, 0x00, 0x00, 0x00, 0x00, 0xB5);
+ SETOP(63, "ENT", 0xB8, 0x00, 0x00, 0x00, 0x00, 0x00);
+ SETOP(64, "RTI", 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0);
+ SETOP(65, "INC", 0x00, 0xE3, 0x00, 0x00, 0xE1, 0xC1);
+ SETOP(66, "INY", 0x00, 0x00, 0x00, 0x00, 0x00, 0xC2);
+ SETOP(67, "IAY", 0x00, 0x00, 0x00, 0x00, 0x00, 0xC3);
+ SETOP(68, "INX", 0x00, 0x00, 0x00, 0x00, 0x00, 0xC4);
+ SETOP(69, "IAX", 0x00, 0x00, 0x00, 0x00, 0x00, 0xC5);
+ SETOP(70, "DEC", 0x00, 0x00, 0x00, 0x00, 0x00, 0xD1);
+ SETOP(71, "DEY", 0x00, 0x00, 0x00, 0x00, 0x00, 0xD2);
+ SETOP(72, "DAY", 0x00, 0xF3, 0x00, 0x00, 0xF1, 0xD3);
+ SETOP(73, "DEX", 0x00, 0x00, 0x00, 0x00, 0x00, 0xD4);
+ SETOP(74, "DAX", 0x00, 0x00, 0x00, 0x00, 0x00, 0xD5);
+ SETOP(75, "JSL", 0x00, 0x00, 0x00, 0x00, 0xE0, 0x00);
+ SETOP(76, "NOP", 0x00, 0x00, 0x00, 0x00, 0x00, 0xE8);
+ SETOP(77, "RTL", 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0);
+ SETOP(78, "BRK", 0x00, 0x00, 0x00, 0x00, 0x00, 0xF8);
+ uint8_t done = 0;
+ uint64_t address = 0x0000;
+ while (!(done & 1)) {
+ char *buf = NULL;
+ char *ins;
+ char *postfix;
+ char mode[3];
+ opent op;
+ uint8_t addrmode = 0;
+ uint64_t value;
+ char *oprand;
+ char *cmd;
+ char *tmp = malloc(sizeof(char *)*128);
+ size_t size;
+ done &= ~6;
+ getline(&buf, &size, stdin);
+ cmd = strtok_r(buf, "\n", &tmp);
+ if (cmd != NULL) {
+ if (strcasecmp(cmd, "done") == 0) {
+ done |= 1;
+ } else {
+ ins = strtok(buf, " \n\t");
+ if (ins != NULL) {
+ oprand = strtok(NULL, "\t\n;, ");
+ strtok_r(ins, ".", &postfix);
+ }
+ if (strcasecmp(cmd, "quit") == 0 || strcasecmp(cmd, "q") == 0)
+ return 2;
+ if (strcasecmp(cmd, "viewmem") == 0) {
+ done |= 4;
+ printf("\t\t\t");
+ for (int ind = 0; ind < 0x10; ind++) {
+ printf("%02x", ind);
+ if (ind < 0x0F)
+ printf(" ");
+ }
+ printf("\n\n");
+ for (int hi = 0; hi < 0x10; hi++) {
+ printf("%016llx:\t", (address & ~0xF)+(hi*0x10));
+ for (int lo = 0; lo < 0x10; lo++) {
+ printf("%02x", addr[(address & ~0xF)+lo+(hi*0x10)]);
+ if (lo < 0x0F)
+ printf(" ");
+ }
+ printf("\n");
+ }
+ }
+ if (oprand == NULL && ins == NULL && postfix == NULL) {
+ done |= 2;
+ }
+ if (ins != NULL) {
+ for (int i = 0; i < strlen(ins); i++) {
+ if (ins[i] == ';') {
+ done |=6;
+ break;
+ }
+ }
+ if (strcasecmp(ins, ".org") == 0) {
+ done |= 6;
+ oprand = strtok(oprand, "$");
+ address = strtoull(oprand, NULL, 16);
+ printf("Origin for program code is now at address $%llx.\n", address);
+ }
+ if (strcasecmp(ins, ".byte") == 0 || strcasecmp(ins, ".word") == 0 || strcasecmp(ins, ".dword") == 0 || strcasecmp(ins, ".qword") == 0) {
+ done |= 6;
+ oprand = strtok(oprand, "$");
+ value = strtoull(oprand, NULL, 16);
+ if (strcasecmp(ins, ".byte") == 0)
+ addr[address++] = value & 0xFF;
+ if (strcasecmp(ins, ".word") == 0) {
+ addr[address] = value & 0xFF;
+ addr[address+1] = value >> 8;
+ address+=2;
+ }
+ if (strcasecmp(ins, ".dword") == 0) {
+ addr[address] = value & 0xFF;
+ addr[address+1] = value >> 8;
+ addr[address+2] = value >> 16;
+ addr[address+3] = value >> 24;
+ address+=4;
+ }
+ if (strcasecmp(ins, ".qword") == 0) {
+ addr[address] = value & 0xFF;
+ addr[address+1] = value >> 8;
+ addr[address+2] = value >> 16;
+ addr[address+3] = value >> 24;
+ addr[address+4] = value >> 32;
+ addr[address+5] = value >> 40;
+ addr[address+6] = value >> 48;
+ addr[address+7] = value >> 56;
+ address+=8;
+ }
+
+ printf("The value $%llx was placed at address $%llx.\n", value, address);
+ }
+ }
+
+ if (!(done & 2) && oprand != NULL) {
+ if (oprand[0] == '#' || oprand[0] == '$') {
+ if(oprand[0] == '#' && (oprand[1] == '$' || oprand[1] == '%')) {
+ mode[1] = oprand[1];
+ mode[2] = '\0';
+ } else {
+ mode[1] = '\0';
+ }
+ mode[0] = oprand[0];
+ oprand = strtok(oprand, "#$%");
+ if (mode[0] == '#') {
+ addrmode = 1;
+ if (mode[1] == '$')
+ value = strtoull(oprand, NULL, 16);
+ if (mode[1] == '%')
+ value = strtoull(oprand, NULL, 2);
+ }
+ if (mode[0] == '$') {
+ value = strtoull(oprand, NULL, 16);
+ if (value & 0xFFFFFFFF) {
+ addrmode = 2;
+ } else if (value & 0xFFFFFFFF00000000) {
+ addrmode = 5;
+ }
+ }
+ }
+ }
+ if (postfix != NULL && !(done & 6)) {
+ if (strcasecmp(postfix, "w") == 0) {
+ addr[address++] = 1;
+ } else if (strcasecmp(postfix, "d") == 0) {
+ addr[address++] = 2;
+ } else if (strcasecmp(postfix, "q") == 0) {
+ addr[address++] = 3;
+ } else {
+ addr[address++] = 0;
+ }
+ } else if (postfix == NULL && !(done & 6)) {
+ addr[address++] = 0;
+ }
+ if (ins != NULL && !(done & 6)) {
+ uint8_t i;
+ for (i = 0; i < 77; i++) {
+ if (strcasecmp(opcodes[i].mnemonic, ins) == 0) {
+ op = opcodes[i];
+ break;
+ }
+ }
+ uint8_t r = addr[address-1] & 3;
+ switch (addrmode) {
+ case 0:
+ if (op.impl || op.impl == CPS) {
+ addr[address++] = op.impl;
+ break;
+ } else {
+ fprintf(stderr, "oof, %s requires an operand.\n", op.mnemonic);
+ }
+ break;
+ case 1:
+ if (op.imm) {
+ addr[address++] = op.imm;
+ switch (op.imm) {
+ case PHP:
+ case PHA:
+ case PHY:
+ case PHX:
+ case PLP:
+ case PLA:
+ case PLY:
+ case PLX:
+ case STT:
+ case LSL:
+ case LSR:
+ case ROL:
+ case ROR:
+ case ENT:
+ addr[address++] = value & 0xFF;
+ break;
+ default:
+ addr[address] = value & 0xFF;
+ if (r & 1)
+ addr[address+1] = value >> 8;
+ if (r & 2)
+ addr[address+2] = value >> 16;
+ addr[address+3] = value >> 24;
+ if (r & 3)
+ addr[address+4] = value >> 32;
+ addr[address+5] = value >> 40;
+ addr[address+6] = value >> 48;
+ addr[address+7] = value >> 56;
+
+ address+=(1 << (r & 3));
+ break;
+
+ }
+ break;
+ } else {
+ fprintf(stderr, "oof, %s does not use Immediate data.\n", op.mnemonic);
+ }
+ break;
+ case 2:
+ if (op.zm) {
+ addr[address++] = op.zm;
+ addr[address] = value & 0xFF;
+ addr[address+1] = value >> 8;
+ addr[address+2] = value >> 16;
+ addr[address+3] = value >> 24;
+ address+=4;
+ break;
+ } else {
+ fprintf(stderr, "oof, %s does not use Zero Matrix.\n", op.mnemonic);
+ }
+ break;
+ case 3:
+ if (op.zmx) {
+ addr[address++] = op.zmy;
+ addr[address] = value & 0xFF;
+ addr[address+1] = value >> 8;
+ addr[address+2] = value >> 16;
+ addr[address+3] = value >> 24;
+ address+=4;
+ break;
+ } else {
+ fprintf(stderr, "oof, %s does not use Zero Matrix, indexed with x.\n", op.mnemonic);
+ }
+ break;
+ case 4:
+ if (op.zmy) {
+ addr[address++] = op.zmy;
+ addr[address] = value & 0xFF;
+ addr[address+1] = value >> 8;
+ addr[address+2] = value >> 16;
+ addr[address+3] = value >> 24;
+ address+=4;
+ break;
+ } else {
+ fprintf(stderr, "oof, %s does not use Zero Matrix, indexed with y.\n", op.mnemonic);
+ }
+ break;
+ case 5:
+ if (op.abs) {
+ addr[address++] = op.abs;
+ addr[address] = value & 0xFF;
+ addr[address+1] = value >> 8;
+ addr[address+2] = value >> 16;
+ addr[address+3] = value >> 24;
+ addr[address+4] = value >> 32;
+ addr[address+5] = value >> 40;
+ addr[address+6] = value >> 48;
+ addr[address+7] = value >> 56;
+ address+=8;
+ break;
+ } else {
+ fprintf(stderr, "oof, %s cannot be an absolute dictator.\n", op.mnemonic);
+ }
+ break;
+ }
+ if (!(done & 6))
+ printf("instruction: %s, ", ins);
+ #if (!__GLIBC__) || (__TINYC__)
+ printf("Postfix: %s, ", (postfix != NULL) ? postfix : "none");
+ #else
+ printf("Postfix: %s, ", (postfix[0] != '\0') ? postfix : "none");
+ #endif
+ printf("Operand: %s, Address: $%llx\n", (oprand != NULL) ? oprand : "none", address);
+ }
+ }
+ }
+ }
+ return 0;
+}
generated by cgit v1.2.3-13-gbd6f (git 2.30.0) at 2024-11-04 21:55:08 +0000