/*
* Simulator of microcontrollers (inst.cc)
*
- * Copyright (C) 1999,99 Drotos Daniel, Talker Bt.
+ * Copyright (C) 1999,2002 Drotos Daniel, Talker Bt.
*
- * Written by Karl Bongers karl@turbobit.com
- *
* To contact author send email to drdani@mazsola.iit.uni-miskolc.hu
+ * Other contributors include:
+ * Karl Bongers karl@turbobit.com,
+ * Johan Knol johan.knol@iduna.nl
*
*/
#include "xacl.h"
#include "regsxa.h"
-int
-cl_xa::get_reg(int word_flag, unsigned int index)
+
+void cl_xa::store1(t_addr addr, unsigned char val)
{
- if (index < 3) { /* banked */
- if (word_flag)
- return get_word_direct(0x400+index);
- else
- return mem_direct[0x400+index];
- } else { /* non-banked */
- if (word_flag)
- return get_word_direct(0x400+index);
- else
- return mem_direct[0x400+index];
+ if (addr < 0x2000) {
+ set_idata1(addr, val);
+ } else {
+ set_xdata1(addr, val);
}
}
-int
-cl_xa::inst_NOP(uint code)
+void cl_xa::store2(t_addr addr, unsigned short val)
{
- return(resGO);
+ if (addr < 0x2000) {
+ set_idata2(addr, val);
+ } else {
+ set_xdata2(addr, val);
+ }
+}
+
+unsigned char cl_xa::get1(t_addr addr)
+{
+ if (addr < 0x2000) {
+ return get_idata1(addr);
+ } else {
+ return get_xdata1(addr);
+ }
+}
+
+unsigned short cl_xa::get2(t_addr addr)
+{
+ if (addr < 0x2000) {
+ return get_idata2(addr);
+ } else {
+ return get_xdata2(addr);
+ }
+}
+
+int cl_xa::get_reg(int word_flag, unsigned int index)
+{
+ int result;
+
+ if (word_flag) {
+ result = get_word_direct(index);
+ }
+ else {
+ result = get_byte_direct(index);
+ }
+ return result;
+}
+
+bool cl_xa::get_bit(int bit) {
+ short offset=0;
+ unsigned char result;
+
+ if (bit>=0x200) {
+ // in sfr space
+ bit-=0x200;
+ offset=0x400;
+ }
+ result = get_byte_direct(offset + (bit/8)) & (1 << (bit%8));
+ return result;
+}
+
+void cl_xa::set_bit(int bit, int value) {
+ int i;
+ short offset=0;
+ if (bit>=0x200) {
+ // in sfr space
+ bit-=0x200;
+ offset=0x400;
+ }
+
+ i = get_byte_direct(offset + (bit/8));
+ if (value) {
+ set_byte_direct(offset + (bit/8), i | (1 << (bit%8)) );
+ } else {
+ set_byte_direct(offset + (bit/8), i & ~(1 << (bit%8)) );
+ }
}
#define RI_F0 ((code >> 4) & 0xf)
#define RI_0F (code & 0xf)
#define RI_07 (code & 0x7)
-int
-cl_xa::inst_ADD(uint code)
+int cl_xa::inst_ADD(uint code, int operands)
{
- int operands = code >> 16; // kludgy, param info
-
+#undef FUNC1
#define FUNC1 add1
+#undef FUNC2
#define FUNC2 add2
#include "inst_gen.cc"
return(resGO);
}
-int
-cl_xa::inst_ADDC(uint code)
+int cl_xa::inst_ADDC(uint code, int operands)
{
- int operands = code >> 16; // kludgy, param info
-
+#undef FUNC1
#define FUNC1 addc1
+#undef FUNC2
#define FUNC2 addc2
#include "inst_gen.cc"
return(resGO);
}
-int
-cl_xa::inst_SUB(uint code)
+int cl_xa::inst_ADDS(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_SUBB(uint code)
+int cl_xa::inst_AND(uint code, int operands)
{
+#undef FUNC1
+#define FUNC1 and1
+#undef FUNC2
+#define FUNC2 and2
+#include "inst_gen.cc"
return(resGO);
}
-int
-cl_xa::inst_CMP(uint code)
+int cl_xa::inst_ANL(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_AND(uint code)
+
+int cl_xa::inst_ASL(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_OR(uint code)
+
+int cl_xa::inst_ASR(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_XOR(uint code)
+
+int cl_xa::inst_BCC(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ if (!(get_psw() & BIT_C)) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_ADDS(uint code)
+
+int cl_xa::inst_BCS(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ if (get_psw() & BIT_C) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_NEG(uint code)
+
+int cl_xa::inst_BEQ(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ if (get_psw() & BIT_Z) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_SEXT(uint code)
+
+int cl_xa::inst_BG(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ short flags=get_psw();
+ bool Z=flags&BIT_Z, C=flags&BIT_C;
+ if (!(Z|C)) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_MUL(uint code)
+int cl_xa::inst_BGE(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ short flags=get_psw();
+ bool N=flags&BIT_N, V=flags&BIT_V;
+ if (!(N^V)) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_DIV(uint code)
+int cl_xa::inst_BGT(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ short flags=get_psw();
+ bool Z=flags&BIT_Z, N=flags&BIT_N, V=flags&BIT_V;
+ if (!((Z|N)^V)) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_DA(uint code)
+int cl_xa::inst_BKPT(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_ASL(uint code)
+int cl_xa::inst_BL(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ short flags=get_psw();
+ bool Z=flags&BIT_Z, C=flags&BIT_C;
+ if (Z|C) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_ASR(uint code)
+int cl_xa::inst_BLE(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ short flags=get_psw();
+ bool Z=flags&BIT_Z, N=flags&BIT_N, V=flags&BIT_V;
+ if ((Z|N)^V) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_LEA(uint code)
+int cl_xa::inst_BLT(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ short flags=get_psw();
+ bool N=flags&BIT_N, V=flags&BIT_V;
+ if (N^V) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_CPL(uint code)
+int cl_xa::inst_BMI(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ if (get_psw()&BIT_N) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_LSR(uint code)
+int cl_xa::inst_BNE(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ if (!(get_psw()&BIT_Z)) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_NORM(uint code)
+int cl_xa::inst_BNV(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ if (!(get_psw()&BIT_V)) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_RL(uint code)
+int cl_xa::inst_BOV(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ if (get_psw()&BIT_V) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_RLC(uint code)
+int cl_xa::inst_BPL(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ if (!(get_psw()&BIT_N)) {
+ PC=(PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_RR(uint code)
+
+int cl_xa::inst_BR(uint code, int operands)
{
+ short jmpAddr = fetch1()*2;
+ PC=(PC+jmpAddr)&0xfffffe;
return(resGO);
}
-int
-cl_xa::inst_RRC(uint code)
+
+int cl_xa::inst_CALL(uint code, int operands)
{
+ int jmpaddr;
+ unsigned int sp;
+ bool pageZero=get_scr()&1;
+
+ switch(operands) {
+ case REL16:
+ {
+ jmpaddr = (signed short)fetch2();
+ sp = get_sp() - (pageZero ? 2 : 4);
+ set_sp(sp);
+ store2(sp, PC&0xffff);
+ if (!pageZero) {
+ store2(sp+2, (PC>>16)&0xff);
+ }
+ jmpaddr *= 2;
+ PC = (PC + jmpaddr) & 0xfffffe;
+ }
+ break;
+ case IREG:
+ {
+ sp = get_sp() - (pageZero ? 2 : 4);
+ set_sp(sp);
+ store2(sp, PC&0xffff);
+ if (!pageZero) {
+ store2(sp+2, (PC>>16)&0xff);
+ }
+ jmpaddr = reg2(RI_07);
+ jmpaddr *= 2;
+ PC = (PC + jmpaddr) & 0xfffffe;
+ }
+ break;
+ }
+ return(resGO);
+}
+
+int cl_xa::inst_CJNE(uint code, int operands)
+{
+ switch(operands) {
+ case REG_DIRECT_REL8:
+ {
+ // update C,N,Z
+ if (code & 0x800) { // word op
+ int result;
+ int src = get_word_direct( ((code & 0x7)<<4) | fetch1());
+ int addr = (fetch1() * 2);
+ int dst = reg2(RI_F0);
+ unsigned char flags;
+ flags = get_psw();
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst - src;
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xffff) flags |= BIT_C;
+ if (dst < src) flags |= BIT_N;
+ set_psw(flags);
+ if (flags & BIT_Z)
+ PC += addr;
+ } else {
+ int result;
+ int src = get_byte_direct( ((code & 0x7)<<4) | fetch1());
+ int addr = (fetch1() * 2);
+ int dst = reg1(RI_F0);
+ unsigned char flags;
+ flags = get_psw();
+ flags &= ~BIT_ALL; /* clear these bits */
+ result = dst - src;
+ if (result == 0) flags |= BIT_Z;
+ if (result > 0xff) flags |= BIT_C;
+ if (dst < src) flags |= BIT_N;
+ set_psw(flags);
+ if (flags & BIT_Z)
+ PC += addr;
+ }
+ }
+ break;
+
+ case DIRECT_REL8:
+ {
+ int daddr = ((code & 0x7) << 8) | fetch();
+ int addr = fetch() * 2;
+
+ if (code & 0x800) { // word op
+ unsigned short tmp = get_word_direct(daddr)-1;
+ set_word_direct(daddr, tmp);
+ if (tmp != 0)
+ PC += addr;
+ } else {
+ unsigned char tmp = get_word_direct(daddr)-1;
+ set_byte_direct(daddr, tmp);
+ if (tmp != 0)
+ PC += addr;
+ }
+ }
+ break;
+ }
return(resGO);
}
-int
-cl_xa::inst_MOVS(uint code)
+
+int cl_xa::inst_CLR(uint code, int operands)
{
+ unsigned short bitAddr = (code&0x03 << 8) + fetch();
+ set_bit (bitAddr, 0);
return(resGO);
}
-int
-cl_xa::inst_MOVC(uint code)
+
+int cl_xa::inst_CMP(uint code, int operands)
{
+#undef FUNC1
+#define FUNC1 cmp1
+#undef FUNC2
+#define FUNC2 cmp2
+#include "inst_gen.cc"
return(resGO);
}
-int
-cl_xa::inst_MOVX(uint code)
+int cl_xa::inst_CPL(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_PUSH(uint code)
+int cl_xa::inst_DA(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_POP(uint code)
+int cl_xa::inst_DIV(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_XCH(uint code)
+
+int cl_xa::inst_DJNZ(uint code, int operands)
+{
+ // update N Z flags.
+ switch(operands) {
+ case REG_REL8:
+ {
+ int addr = ( ((char)fetch1()) * 2);
+ if (code & 0x800) { // word op
+ unsigned short tmp = mov2(0, reg2(RI_F0)-1);
+ set_reg2(RI_F0, tmp);
+ if (tmp != 0)
+ PC = (PC + addr) & 0xfffffe;
+ } else {
+ unsigned char tmp = mov1(0, reg1(RI_F0)-1);
+ set_reg1(RI_F0, tmp);
+ if (tmp != 0)
+ PC = (PC + addr) & 0xfffffe;
+ }
+ }
+ break;
+
+ case DIRECT_REL8:
+ {
+ int daddr = ((code & 0x7) << 8) | fetch();
+ int addr = fetch() * 2;
+
+ if (code & 0x800) { // word op
+ unsigned short tmp = get_word_direct(daddr)-1;
+ set_word_direct(daddr, tmp);
+ if (tmp != 0)
+ PC += addr;
+ } else {
+ unsigned char tmp = get_word_direct(daddr)-1;
+ set_byte_direct(daddr, tmp);
+ if (tmp != 0)
+ PC += addr;
+ }
+ }
+ break;
+ }
+
+ return(resGO);
+}
+
+int cl_xa::inst_FCALL(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_SETB(uint code)
+
+int cl_xa::inst_FJMP(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_CLR(uint code)
+
+int cl_xa::inst_JB(uint code, int operands)
{
+ short bitAddr=((code&0x3)<<8) + fetch1();
+ short jmpAddr = (fetch1() * 2);
+ if (get_bit(bitAddr)) {
+ PC = (PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_MOV(uint code)
+int cl_xa::inst_JBC(uint code, int operands)
{
+ short bitAddr=((code&0x3)<<8) + fetch1();
+ short jmpAddr = (fetch1() * 2);
+ if (get_bit(bitAddr)) {
+ PC = (PC+jmpAddr)&0xfffffe;
+ }
+ set_bit(bitAddr,0);
return(resGO);
}
-int
-cl_xa::inst_ANL(uint code)
+int cl_xa::inst_JNB(uint code, int operands)
{
+ short bitAddr=((code&0x3)<<8) + fetch1();
+ short jmpAddr = (fetch1() * 2);
+ if (!get_bit(bitAddr)) {
+ PC = (PC+jmpAddr)&0xfffffe;
+ }
return(resGO);
}
-int
-cl_xa::inst_ORL(uint code)
+int cl_xa::inst_JMP(uint code, int operands)
{
+ int jmpAddr;
+
+ switch(operands) {
+ case REL16:
+ {
+ jmpAddr = (signed short)fetch2()*2;
+ PC = (PC + jmpAddr) & 0xfffffe;
+ }
+ break;
+ case IREG:
+ PC &= 0xff0000;
+ PC |= (reg2(RI_07) & 0xfffe); /* word aligned */
+ break;
+ /* fixme 2 more... */
+ }
return(resGO);
}
-int
-cl_xa::inst_BR(uint code)
+int cl_xa::inst_JNZ(uint code, int operands)
+{
+ short saddr = (fetch1() * 2);
+ /* reg1(8) = R4L, is ACC for MCS51 compatiblility */
+ if (reg1(8)!=0) {
+ PC = (PC + saddr) & 0xfffffe;
+ }
+ return(resGO);
+}
+int cl_xa::inst_JZ(uint code, int operands)
+{
+ /* reg1(8) = R4L, is ACC for MCS51 compatiblility */
+ short saddr = (fetch1() * 2);
+ if (reg1(8)==0) {
+ PC += saddr;
+ }
+ return(resGO);
+}
+int cl_xa::inst_LEA(uint code, int operands)
+{
+ switch (operands) {
+ case REG_REGOFF8:
+ {
+ char offset=fetch1();
+ set_reg2(RI_70, reg2(RI_07)+offset);
+ break;
+ }
+ case REG_REGOFF16:
+ {
+ short offset=fetch2();
+ set_reg2(RI_70, reg2(RI_07)+offset);
+ break;
+ }
+ }
+ return(resGO);
+}
+int cl_xa::inst_LSR(uint code, int operands)
+{
+ return(resGO);
+}
+int cl_xa::inst_MOV(uint code, int operands)
+{
+#undef FUNC1
+#define FUNC1 mov1
+#undef FUNC2
+#define FUNC2 mov2
+#include "inst_gen.cc"
+ return(resGO);
+}
+int cl_xa::inst_MOVC(uint code, int operands)
+{
+ switch (operands) {
+ case REG_IREGINC:
+ {
+ short srcreg = reg2(RI_07);
+ if (code & 0x0800) { /* word op */
+ set_reg2( RI_F0,
+ mov2( reg2(RI_F0),
+ getcode2(srcreg)
+ )
+ );
+ } else {
+ set_reg1( RI_F0,
+ mov1( reg1(RI_F0),
+ getcode1(srcreg)
+ )
+ );
+ }
+ if (operands == REG_IREGINC) {
+ set_reg2(RI_07, srcreg+1);
+ }
+ }
+ break;
+ case A_APLUSDPTR:
+ { /* R4l=ACC, R6=DPTR */
+ unsigned int addr = (PC & 0xff0000) | (reg1(4) + reg2(6));
+ unsigned short result;
+ unsigned char flags;
+ flags = get_psw();
+
+ flags &= ~(BIT_Z | BIT_N); /* clear these bits */
+ result = getcode1(addr);
+ set_reg1( 4, result);
+ if (result == 0) flags |= BIT_Z;
+ if (result & 0x80) flags |= BIT_N;
+ set_psw(flags);
+ }
+ break;
+ case A_APLUSPC:
+ { /* R4l=ACC, R6=DPTR */
+ unsigned int addr = (PC + reg1(4));
+ unsigned short result;
+ unsigned char flags;
+ flags = get_psw();
+
+ flags &= ~(BIT_Z | BIT_N); /* clear these bits */
+ result = getcode1(addr);
+ set_reg1( 4, result);
+ if (result == 0) flags |= BIT_Z;
+ if (result & 0x80) flags |= BIT_N;
+ set_psw(flags);
+ }
+ break;
+ }
+ return(resGO);
+}
+int cl_xa::inst_MOVS(uint code, int operands)
+{
+ return(resGO);
+}
+int cl_xa::inst_MOVX(uint code, int operands)
+{
+ return(resGO);
+}
+int cl_xa::inst_MUL(uint code, int operands)
+{
+ return(resGO);
+}
+int cl_xa::inst_NEG(uint code, int operands)
+{
+ return(resGO);
+}
+int cl_xa::inst_NOP(uint code, int operands)
+{
+ return(resGO);
+}
+int cl_xa::inst_NORM(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_JMP(uint code)
+int cl_xa::inst_OR(uint code, int operands)
{
+#undef FUNC1
+#define FUNC1 or1
+#undef FUNC2
+#define FUNC2 or2
+#include "inst_gen.cc"
return(resGO);
}
-int
-cl_xa::inst_CALL(uint code)
+
+int cl_xa::inst_ORL(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_RET(uint code)
+
+int cl_xa::inst_POP(uint code, int operands)
{
+ unsigned short sp=get_sp();
+ switch(operands) {
+ case DIRECT:
+ {
+ unsigned short direct_addr = ((operands & 0x7) << 8) | fetch();
+
+ if (code & 0x0800) { /* word op */
+ set_word_direct(direct_addr, get2(sp) );
+ } else {
+ set_byte_direct(direct_addr, get2(sp) & 0xff );
+ }
+ set_sp(sp+2);
+ }
+ break;
+
+ case RLIST:
+ {
+ unsigned char rlist = fetch();
+ if (code & 0x0800) { // word op
+ if (code & 0x4000) { // R8-R15
+ if (rlist&0x01) { set_reg2(8, get2(sp)); sp+=2; }
+ if (rlist&0x02) { set_reg2(9, get2(sp)); sp+=2; }
+ if (rlist&0x04) { set_reg2(10, get2(sp)); sp+=2; }
+ if (rlist&0x08) { set_reg2(11, get2(sp)); sp+=2; }
+ if (rlist&0x10) { set_reg2(12, get2(sp)); sp+=2; }
+ if (rlist&0x20) { set_reg2(13, get2(sp)); sp+=2; }
+ if (rlist&0x40) { set_reg2(14, get2(sp)); sp+=2; }
+ if (rlist&0x80) { set_reg2(15, get2(sp)); sp+=2; }
+ } else { // R0-R7
+ if (rlist&0x01) { set_reg2(0, get2(sp)); sp+=2; }
+ if (rlist&0x02) { set_reg2(1, get2(sp)); sp+=2; }
+ if (rlist&0x04) { set_reg2(2, get2(sp)); sp+=2; }
+ if (rlist&0x08) { set_reg2(3, get2(sp)); sp+=2; }
+ if (rlist&0x10) { set_reg2(4, get2(sp)); sp+=2; }
+ if (rlist&0x20) { set_reg2(5, get2(sp)); sp+=2; }
+ if (rlist&0x40) { set_reg2(6, get2(sp)); sp+=2; }
+ if (rlist&0x80) { set_reg2(7, get2(sp)); sp+=2; }
+ }
+ } else { // byte op
+ if (code & 0x4000) { // R4l-R7h
+ if (rlist&0x01) { set_reg1(8, get1(sp)); sp+=2; }
+ if (rlist&0x02) { set_reg1(9, get1(sp)); sp+=2; }
+ if (rlist&0x04) { set_reg1(10, get1(sp)); sp+=2; }
+ if (rlist&0x08) { set_reg1(11, get1(sp)); sp+=2; }
+ if (rlist&0x10) { set_reg1(12, get1(sp)); sp+=2; }
+ if (rlist&0x20) { set_reg1(13, get1(sp)); sp+=2; }
+ if (rlist&0x40) { set_reg1(14, get1(sp)); sp+=2; }
+ if (rlist&0x80) { set_reg1(15, get1(sp)); sp+=2; }
+ } else { // R0l-R3h
+ if (rlist&0x01) { set_reg1(0, get1(sp)); sp+=2; }
+ if (rlist&0x02) { set_reg1(1, get1(sp)); sp+=2; }
+ if (rlist&0x04) { set_reg1(2, get1(sp)); sp+=2; }
+ if (rlist&0x08) { set_reg1(3, get1(sp)); sp+=2; }
+ if (rlist&0x10) { set_reg1(4, get1(sp)); sp+=2; }
+ if (rlist&0x20) { set_reg1(5, get1(sp)); sp+=2; }
+ if (rlist&0x40) { set_reg1(6, get1(sp)); sp+=2; }
+ if (rlist&0x80) { set_reg1(7, get1(sp)); sp+=2; }
+ }
+ }
+ }
+ break;
+ }
return(resGO);
}
-int
-cl_xa::inst_Bcc(uint code)
+
+int cl_xa::inst_PUSH(uint code, int operands)
{
+ switch(operands) {
+ case DIRECT:
+ {
+ unsigned short sp;
+ unsigned short direct_addr = ((operands & 0x7) << 8) | fetch();
+
+ sp = get_sp()-2;
+ set_sp(sp);
+ if (code & 0x0800) { /* word op */
+ store2( sp, get_word_direct(direct_addr));
+ } else {
+ store2( sp, get_byte_direct(direct_addr));
+ }
+ }
+ break;
+
+ case RLIST:
+ {
+ unsigned short sp=get_sp();
+ unsigned char rlist = fetch();
+ if (code & 0x0800) { // word op
+ if (code & 0x4000) { // R15-R8
+ if (rlist&0x80) { sp-=2; store2(sp, reg2(15)); }
+ if (rlist&0x40) { sp-=2; store2(sp, reg2(14)); }
+ if (rlist&0x20) { sp-=2; store2(sp, reg2(13)); }
+ if (rlist&0x10) { sp-=2; store2(sp, reg2(12)); }
+ if (rlist&0x08) { sp-=2; store2(sp, reg2(11)); }
+ if (rlist&0x04) { sp-=2; store2(sp, reg2(10)); }
+ if (rlist&0x02) { sp-=2; store2(sp, reg2(9)); }
+ if (rlist&0x01) { sp-=2; store2(sp, reg2(8)); }
+ } else { // R7-R0
+ if (rlist&0x80) { sp-=2; store2(sp, reg2(7)); }
+ if (rlist&0x40) { sp-=2; store2(sp, reg2(6)); }
+ if (rlist&0x20) { sp-=2; store2(sp, reg2(5)); }
+ if (rlist&0x10) { sp-=2; store2(sp, reg2(4)); }
+ if (rlist&0x08) { sp-=2; store2(sp, reg2(3)); }
+ if (rlist&0x04) { sp-=2; store2(sp, reg2(2)); }
+ if (rlist&0x02) { sp-=2; store2(sp, reg2(1)); }
+ if (rlist&0x01) { sp-=2; store2(sp, reg2(0)); }
+ }
+ } else { // byte op
+ if (code & 0x4000) { // R7h-R4l
+ if (rlist&0x80) { sp-=2; store2(sp, reg1(15)); }
+ if (rlist&0x40) { sp-=2; store2(sp, reg1(14)); }
+ if (rlist&0x20) { sp-=2; store2(sp, reg1(13)); }
+ if (rlist&0x10) { sp-=2; store2(sp, reg1(12)); }
+ if (rlist&0x08) { sp-=2; store2(sp, reg1(11)); }
+ if (rlist&0x04) { sp-=2; store2(sp, reg1(10)); }
+ if (rlist&0x02) { sp-=2; store2(sp, reg1(9)); }
+ if (rlist&0x01) { sp-=2; store2(sp, reg1(8)); }
+ } else { // R3h-R0l
+ if (rlist&0x80) { sp-=2; store2(sp, reg1(7)); }
+ if (rlist&0x40) { sp-=2; store2(sp, reg1(6)); }
+ if (rlist&0x20) { sp-=2; store2(sp, reg1(5)); }
+ if (rlist&0x10) { sp-=2; store2(sp, reg1(4)); }
+ if (rlist&0x08) { sp-=2; store2(sp, reg1(3)); }
+ if (rlist&0x04) { sp-=2; store2(sp, reg1(2)); }
+ if (rlist&0x02) { sp-=2; store2(sp, reg1(1)); }
+ if (rlist&0x01) { sp-=2; store2(sp, reg1(0)); }
+ }
+ }
+ set_sp(sp);
+ }
+ break;
+ }
return(resGO);
}
-int
-cl_xa::inst_JB(uint code)
+int cl_xa::inst_RESET(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_JNB(uint code)
+int cl_xa::inst_RET(uint code, int operands)
+{
+ unsigned int retaddr;
+ unsigned short sp;
+ bool pageZero=get_scr()&1;
+
+ sp = get_sp();
+ retaddr = get2(sp);
+ if (!pageZero) {
+ retaddr |= get2(sp+2) << 16;
+ set_sp(sp+4);
+ } else {
+ set_sp(sp+2);
+ }
+ PC = retaddr;
+ return(resGO);
+}
+int cl_xa::inst_RETI(uint code, int operands)
+{
+ unsigned int retaddr;
+ unsigned short sp;
+ bool pageZero=get_scr()&1;
+
+ sp = get_sp();
+ set_psw(get2(sp));
+ retaddr = get2(sp+2);
+ if (!pageZero) {
+ retaddr |= get2(sp+4) << 16;
+ set_sp(sp+6);
+ } else {
+ set_sp(sp+4);
+ }
+ PC = retaddr;
+ return(resGO);
+}
+int cl_xa::inst_RL(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_CJNE(uint code)
+int cl_xa::inst_RLC(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_DJNZ(uint code)
+int cl_xa::inst_RR(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_JZ(uint code)
+int cl_xa::inst_RRC(uint code, int operands)
{
return(resGO);
}
-int
-cl_xa::inst_JNZ(uint code)
+int cl_xa::inst_SETB(uint code, int operands)
{
+ unsigned short bitAddr = (code&0x03 << 8) + fetch();
+ set_bit (bitAddr, 1);
return(resGO);
}
-int
-cl_xa::inst_BKPT(uint code)
+
+int cl_xa::inst_SEXT(uint code, int operands)
{
+ bool neg=get_psw()&BIT_N;
+ if (code & 0x0800) { // word op
+ set_reg2(RI_F0, neg ? 0xffff : 0);
+ } else {
+ set_reg1(RI_F0, neg ? 0xff : 0);
+ }
return(resGO);
}
-int
-cl_xa::inst_TRAP(uint code)
+
+int cl_xa::inst_SUB(uint code, int operands)
{
+#undef FUNC1
+#define FUNC1 sub1
+#undef FUNC2
+#define FUNC2 sub2
+#include "inst_gen.cc"
return(resGO);
}
-int
-cl_xa::inst_RESET(uint code)
+
+int cl_xa::inst_SUBB(uint code, int operands)
{
+#undef FUNC1
+#define FUNC1 subb1
+#undef FUNC2
+#define FUNC2 subb2
+#include "inst_gen.cc"
return(resGO);
}
+int cl_xa::inst_TRAP(uint code, int operands)
+{
+ // steal a few opcodes for simulator only putchar() and exit()
+ // functions. Used in SDCC regression testing.
+ switch (code & 0x0f) {
+ case 0xe:
+ // implement a simulator putchar() routine
+ //printf("PUTCHAR-----> %xH\n", reg1(0));
+ putchar(reg1(0));
+ fflush(stdout);
+ break;
+
+ case 0xf:
+ ::exit(0);
+ break;
+ }
+ return(resGO);
+}
+
+int cl_xa::inst_XCH(uint code, int operands)
+{
+ return(resGO);
+}
+int cl_xa::inst_XOR(uint code, int operands)
+{
+#undef FUNC1
+#define FUNC1 xor1
+#undef FUNC2
+#define FUNC2 xor2
+#include "inst_gen.cc"
+ return(resGO);
+}
/* End of xa.src/inst.cc */
projects / fw / sdcc / blobdiff