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Changed the ARC disassembler to use std::ostream internally

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This commit is contained in:
Nathan Woods 2016-10-23 16:56:13 -04:00
parent a684594b25
commit 20801e7a3b
1 changed files with 15 additions and 19 deletions
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34
src/devices/cpu/arc/arcdasm.cpp
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@ -9,17 +9,6 @@
#include "emu.h"
#include <stdarg.h>
static char *output;
static void ATTR_PRINTF(1,2) print(const char *fmt, ...)
{
va_list vl;
va_start(vl, fmt);
vsprintf(output, fmt, vl);
va_end(vl);
}
/*****************************************************************************/
@ -191,34 +180,41 @@ static const char *regnames[0x40] =
#define ARC_REGOP_SHIMM ((op & 0x000001ff) >> 0 ) // aka D
CPU_DISASSEMBLE(arc)
static offs_t internal_disasm_arc(cpu_device *device, std::ostream &stream, offs_t pc, const uint8_t *oprom, const uint8_t *opram, int options)
{
uint32_t op = oprom[0] | (oprom[1] << 8) | (oprom[2] << 16) | (oprom[3] << 24);
op = big_endianize_int32(op);
output = buffer;
uint8_t opcode = ARC_OPERATION;
switch (opcode)
{
case 0x04: // B
case 0x05: // BL
print("%s(%s)(%s) %08x", basic[opcode], conditions[ARC_CONDITION], delaytype[ARC_BRANCH_DELAY], (ARC_BRANCH_ADDR<<2)+pc+4);
util::stream_format(stream, "%s(%s)(%s) %08x", basic[opcode], conditions[ARC_CONDITION], delaytype[ARC_BRANCH_DELAY], (ARC_BRANCH_ADDR<<2)+pc+4);
break;
case 0x08: // ADD
// todo, short / long immediate formats
print("%s %s , %s , %s (%08x)", basic[opcode], regnames[ARC_REGOP_DEST], regnames[ARC_REGOP_OP1], regnames[ARC_REGOP_OP2], op &~ 0xfffffe00);
util::stream_format(stream, "%s %s , %s , %s (%08x)", basic[opcode], regnames[ARC_REGOP_DEST], regnames[ARC_REGOP_OP1], regnames[ARC_REGOP_OP2], op &~ 0xfffffe00);
break;
default:
print("%s (%08x)", basic[opcode], op &~ 0xf8000000);
util::stream_format(stream, "%s (%08x)", basic[opcode], op &~ 0xf8000000);
break;
}
return 4 | DASMFLAG_SUPPORTED;
}
CPU_DISASSEMBLE(arc)
{
std::ostringstream stream;
offs_t result = internal_disasm_arc(device, stream, pc, oprom, opram, options);
std::string stream_str = stream.str();
strcpy(buffer, stream_str.c_str());
return result;
}