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Merge pull request #1576 from npwoods/dasmstream_i8008

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Changed the i8008 disassembler to use 'std::ostream &' internally
This commit is contained in:
R. Belmont 2016-10-27 16:26:04 -04:00 committed by GitHub
commit 3daf6be426
1 changed files with 50 additions and 40 deletions
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90
src/devices/cpu/i8008/8008dasm.cpp
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@ -16,7 +16,7 @@
static const char reg[] = { 'a', 'b', 'c', 'd', 'e', 'h', 'l', 'm' };
static const char flag_names[] = { 'c', 'z', 's', 'p' };
CPU_DISASSEMBLE( i8008 )
static offs_t internal_disasm_i8008(cpu_device *device, std::ostream &stream, offs_t pc, const uint8_t *oprom, const uint8_t *opram, int options)
{
uint32_t flags = 0;
unsigned PC = pc;
@ -25,91 +25,101 @@ CPU_DISASSEMBLE( i8008 )
{
case 0x03: // starting with 11
if (op==0xff) {
sprintf (buffer,"hlt");
util::stream_format(stream, "hlt");
} else {
sprintf (buffer,"l%c%c",reg[(op >> 3) & 7],reg[op & 7]);
util::stream_format(stream, "l%c%c",reg[(op >> 3) & 7],reg[op & 7]);
}
break;
case 0x00: // starting with 00
switch(op & 7) {
case 0 : if(((op >> 3) & 7)==0) {
sprintf (buffer,"hlt");
util::stream_format(stream, "hlt");
} else {
if(((op >> 3) & 7)==7) {
sprintf (buffer,"illegal");
util::stream_format(stream, "illegal");
} else {
sprintf (buffer,"in%c",reg[(op >> 3) & 7]);
util::stream_format(stream, "in%c",reg[(op >> 3) & 7]);
}
}
break;
case 1 : if(((op >> 3) & 7)==0) {
sprintf (buffer,"hlt");
util::stream_format(stream, "hlt");
} else {
if(((op >> 3) & 7)==7) {
sprintf (buffer,"illegal");
util::stream_format(stream, "illegal");
} else {
sprintf (buffer,"dc%c",reg[(op >> 3) & 7]);
util::stream_format(stream, "dc%c",reg[(op >> 3) & 7]);
}
}
break;
case 2 : {
switch((op >> 3) & 7) {
case 0 : sprintf (buffer,"rlc"); break;
case 1 : sprintf (buffer,"rrc"); break;
case 2 : sprintf (buffer,"ral"); break;
case 3 : sprintf (buffer,"rar"); break;
default : sprintf (buffer,"illegal"); break;
case 0 : util::stream_format(stream, "rlc"); break;
case 1 : util::stream_format(stream, "rrc"); break;
case 2 : util::stream_format(stream, "ral"); break;
case 3 : util::stream_format(stream, "rar"); break;
default : util::stream_format(stream, "illegal"); break;
}
}
break;
case 3 : sprintf (buffer,"r%c%c",(BIT(op,5) ? 't' : 'f'),flag_names[(op>>3)&3]); break;
case 3 : util::stream_format(stream, "r%c%c",(BIT(op,5) ? 't' : 'f'),flag_names[(op>>3)&3]); break;
case 4 : {
switch((op >> 3) & 7) {
case 0 : sprintf (buffer,"adi %02x",ARG(pc)); pc++; break;
case 1 : sprintf (buffer,"aci %02x",ARG(pc)); pc++; break;
case 2 : sprintf (buffer,"sui %02x",ARG(pc)); pc++; break;
case 3 : sprintf (buffer,"sbi %02x",ARG(pc)); pc++; break;
case 4 : sprintf (buffer,"ndi %02x",ARG(pc)); pc++; break;
case 5 : sprintf (buffer,"xri %02x",ARG(pc)); pc++; break;
case 6 : sprintf (buffer,"ori %02x",ARG(pc)); pc++; break;
case 7 : sprintf (buffer,"cpi %02x",ARG(pc)); pc++; break;
case 0 : util::stream_format(stream, "adi %02x",ARG(pc)); pc++; break;
case 1 : util::stream_format(stream, "aci %02x",ARG(pc)); pc++; break;
case 2 : util::stream_format(stream, "sui %02x",ARG(pc)); pc++; break;
case 3 : util::stream_format(stream, "sbi %02x",ARG(pc)); pc++; break;
case 4 : util::stream_format(stream, "ndi %02x",ARG(pc)); pc++; break;
case 5 : util::stream_format(stream, "xri %02x",ARG(pc)); pc++; break;
case 6 : util::stream_format(stream, "ori %02x",ARG(pc)); pc++; break;
case 7 : util::stream_format(stream, "cpi %02x",ARG(pc)); pc++; break;
}
}
break;
case 5 : sprintf (buffer,"rst %02x",(op>>3) & 7); break;
case 6 : sprintf (buffer,"l%ci %02x",reg[(op >> 3) & 7],ARG(pc)); pc++; break;
case 7 : sprintf (buffer,"ret"); break;
case 5 : util::stream_format(stream, "rst %02x",(op>>3) & 7); break;
case 6 : util::stream_format(stream, "l%ci %02x",reg[(op >> 3) & 7],ARG(pc)); pc++; break;
case 7 : util::stream_format(stream, "ret"); break;
}
break;
case 0x01: // starting with 01
switch(op & 7) {
case 0 : sprintf (buffer,"j%c%c %02x%02x",(BIT(op,5)? 't' : 'f'),flag_names[(op>>3)&3], ARG(pc+1) & 0x3f,ARG(pc)); pc+=2; break;
case 2 : sprintf (buffer,"c%c%c %02x%02x",(BIT(op,5)? 't' : 'f'),flag_names[(op>>3)&3], ARG(pc+1) & 0x3f,ARG(pc)); pc+=2; break;
case 4 : sprintf (buffer,"jmp %02x%02x",ARG(pc+1) & 0x3f,ARG(pc)); pc+=2; break;
case 6 : sprintf (buffer,"cal %02x%02x",ARG(pc+1) & 0x3f,ARG(pc)); pc+=2; break;
case 0 : util::stream_format(stream, "j%c%c %02x%02x",(BIT(op,5)? 't' : 'f'),flag_names[(op>>3)&3], ARG(pc+1) & 0x3f,ARG(pc)); pc+=2; break;
case 2 : util::stream_format(stream, "c%c%c %02x%02x",(BIT(op,5)? 't' : 'f'),flag_names[(op>>3)&3], ARG(pc+1) & 0x3f,ARG(pc)); pc+=2; break;
case 4 : util::stream_format(stream, "jmp %02x%02x",ARG(pc+1) & 0x3f,ARG(pc)); pc+=2; break;
case 6 : util::stream_format(stream, "cal %02x%02x",ARG(pc+1) & 0x3f,ARG(pc)); pc+=2; break;
case 1 :
case 3 :
case 5 :
case 7 : if (((op>>4)&3)==0) {
sprintf (buffer,"inp %02x",(op >> 1) & 0x07);
util::stream_format(stream, "inp %02x",(op >> 1) & 0x07);
} else {
sprintf (buffer,"out %02x",(op >> 1) & 0x1f);
util::stream_format(stream, "out %02x",(op >> 1) & 0x1f);
}
break;
}
break;
case 0x02: // starting with 10
switch((op >> 3) & 7) {
case 0 : sprintf (buffer,"ad%c",reg[op & 7]); break;
case 1 : sprintf (buffer,"ac%c",reg[op & 7]); break;
case 2 : sprintf (buffer,"su%c",reg[op & 7]); break;
case 3 : sprintf (buffer,"sb%c",reg[op & 7]); break;
case 4 : sprintf (buffer,"nd%c",reg[op & 7]); break;
case 5 : sprintf (buffer,"xr%c",reg[op & 7]); break;
case 6 : sprintf (buffer,"or%c",reg[op & 7]); break;
case 7 : sprintf (buffer,"cp%c",reg[op & 7]); break;
case 0 : util::stream_format(stream, "ad%c",reg[op & 7]); break;
case 1 : util::stream_format(stream, "ac%c",reg[op & 7]); break;
case 2 : util::stream_format(stream, "su%c",reg[op & 7]); break;
case 3 : util::stream_format(stream, "sb%c",reg[op & 7]); break;
case 4 : util::stream_format(stream, "nd%c",reg[op & 7]); break;
case 5 : util::stream_format(stream, "xr%c",reg[op & 7]); break;
case 6 : util::stream_format(stream, "or%c",reg[op & 7]); break;
case 7 : util::stream_format(stream, "cp%c",reg[op & 7]); break;
}
break;
}
return (pc - PC) | flags | DASMFLAG_SUPPORTED;
}
CPU_DISASSEMBLE(i8008)
{
std::ostringstream stream;
offs_t result = internal_disasm_i8008(device, stream, pc, oprom, opram, options);
std::string stream_str = stream.str();
strcpy(buffer, stream_str.c_str());
return result;
}