Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-10-06 17:08:28 +03:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

Changed the 8x300 disassembler to use 'std::ostream &' internally

Browse Source
This commit is contained in:
Nathan Woods 2016-11-11 09:41:28 -05:00
parent a9d260cf14
commit bae27af7e5
1 changed files with 42 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

94
src/devices/cpu/8x300/8x300dasm.cpp
View File

@ -41,9 +41,8 @@ static inline bool is_src_rot(uint16_t opcode)
return true; return true;
} }
CPU_DISASSEMBLE( n8x300 ) static offs_t internal_disasm_n8x300(cpu_device *device, std::ostream &stream, offs_t pc, const uint8_t *oprom, const uint8_t *opram, int options)
{ {
char tmp[16];
unsigned startpc = pc; unsigned startpc = pc;
uint16_t opcode = (oprom[pc - startpc] << 8) | oprom[pc+1 - startpc]; uint16_t opcode = (oprom[pc - startpc] << 8) | oprom[pc+1 - startpc];
uint8_t inst = opcode >> 13; uint8_t inst = opcode >> 13;
@ -53,99 +52,90 @@ CPU_DISASSEMBLE( n8x300 )
switch (inst) switch (inst)
{ {
case 0x00: case 0x00:
sprintf(buffer,"MOVE "); stream << "MOVE " << reg_names[SRC];
strcat(buffer,reg_names[SRC]);
if(is_rot(opcode)) if(is_rot(opcode))
sprintf(tmp,"(%i),",ROTLEN); util::stream_format(stream, "(%i),", ROTLEN);
else else
sprintf(tmp,",%i,",ROTLEN); util::stream_format(stream, ",%i,", ROTLEN);
strcat(buffer,tmp); stream << reg_names[DST];
strcat(buffer,reg_names[DST]);
break; break;
case 0x01: case 0x01:
sprintf(buffer,"ADD "); stream << "ADD " << reg_names[SRC];
strcat(buffer,reg_names[SRC]);
if(is_rot(opcode)) if(is_rot(opcode))
sprintf(tmp,"(%i),",ROTLEN); util::stream_format(stream, "(%i),", ROTLEN);
else else
sprintf(tmp,",%i,",ROTLEN); util::stream_format(stream, ",%i,", ROTLEN);
strcat(buffer,tmp); stream << reg_names[DST];
strcat(buffer,reg_names[DST]);
break; break;
case 0x02: case 0x02:
sprintf(buffer,"AND "); stream << "AND " << reg_names[SRC];
strcat(buffer,reg_names[SRC]);
if(is_rot(opcode)) if(is_rot(opcode))
sprintf(tmp,"(%i),",ROTLEN); util::stream_format(stream, "(%i),", ROTLEN);
else else
sprintf(tmp,",%i,",ROTLEN); util::stream_format(stream, ",%i,", ROTLEN);
strcat(buffer,tmp); stream << reg_names[DST];
strcat(buffer,reg_names[DST]);
break; break;
case 0x03: case 0x03:
sprintf(buffer,"XOR "); stream << "XOR " << reg_names[SRC];
strcat(buffer,reg_names[SRC]);
if(is_rot(opcode)) if(is_rot(opcode))
sprintf(tmp,"(%i),",ROTLEN); util::stream_format(stream, "(%i),", ROTLEN);
else else
sprintf(tmp,",%i,",ROTLEN); util::stream_format(stream, ",%i,", ROTLEN);
strcat(buffer,tmp); stream << reg_names[DST];
strcat(buffer,reg_names[DST]);
break; break;
case 0x04: case 0x04:
sprintf(buffer,"XEC "); stream << "XEC " << reg_names[SRC];
strcat(buffer,reg_names[SRC]);
if(is_src_rot(opcode)) if(is_src_rot(opcode))
{ {
sprintf(tmp,",%02XH",IMM8); util::stream_format(stream, ",%02XH", IMM8);
strcat(buffer,tmp);
} }
else else
{ {
sprintf(tmp,",%i",ROTLEN); util::stream_format(stream, ",%i", ROTLEN);
strcat(buffer,tmp); util::stream_format(stream, ",%02XH", IMM5);
sprintf(tmp,",%02XH",IMM5);
strcat(buffer,tmp);
} }
break; break;
case 0x05: case 0x05:
sprintf(buffer,"NZT "); stream << "NZT " << reg_names[SRC];
strcat(buffer,reg_names[SRC]);
if(is_src_rot(opcode)) if(is_src_rot(opcode))
{ {
sprintf(tmp,",%02XH",IMM8); util::stream_format(stream, ",%02XH", IMM8);
strcat(buffer,tmp);
} }
else else
{ {
sprintf(tmp,",%i",ROTLEN); util::stream_format(stream, ",%i", ROTLEN);
strcat(buffer,tmp); util::stream_format(stream, ",%02XH", IMM5);
sprintf(tmp,",%02XH",IMM5);
strcat(buffer,tmp);
} }
break; break;
case 0x06: case 0x06:
sprintf(buffer,"XMIT "); stream << "XMIT ";
if(is_src_rot(opcode)) if(is_src_rot(opcode))
{ {
sprintf(tmp,"%02XH,",IMM8); util::stream_format(stream, "%02XH,", IMM8);
strcat(buffer,tmp); stream << reg_names[SRC];
strcat(buffer,reg_names[SRC]);
} }
else else
{ {
sprintf(tmp,"%02XH,",IMM5); util::stream_format(stream, "%02XH,", IMM5);
strcat(buffer,tmp); stream << reg_names[SRC];
strcat(buffer,reg_names[SRC]); util::stream_format(stream, ",%i", ROTLEN);
sprintf(tmp,",%i",ROTLEN);
strcat(buffer,tmp);
} }
break; break;
case 0x07: case 0x07:
sprintf(buffer,"JMP %04XH",opcode & 0x1fff); util::stream_format(stream, "JMP %04XH", opcode & 0x1fff);
break; break;
} }
return (pc - startpc); return (pc - startpc);
} }
CPU_DISASSEMBLE(n8x300)
{
std::ostringstream stream;
offs_t result = internal_disasm_n8x300(device, stream, pc, oprom, opram, options);
std::string stream_str = stream.str();
strcpy(buffer, stream_str.c_str());
return result;
}