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m6809: Add support for stepping out

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This commit is contained in:
AJR 2022-06-16 19:13:41 -04:00
parent 62de252337
commit 8c7b122713
1 changed files with 9 additions and 5 deletions
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14
src/devices/cpu/m6809/6x09dasm.cpp
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@ -124,6 +124,7 @@ offs_t m6x09_base_disassembler::disassemble(std::ostream &stream, offs_t pc, con
int numoperands = (p - pc == 1)
? op->length() - 1
: op->length() - 2;
offs_t flags = op->flags();
offs_t ppc = p;
p += numoperands;
@ -179,7 +180,10 @@ offs_t m6x09_base_disassembler::disassemble(std::ostream &stream, offs_t pc, con
if (pb & 0x40)
util::stream_format(stream, "%s%s", (pb&0x3f)?",":"", (op->mode() == PULS)?"U":"S");
if (pb & 0x80)
{
util::stream_format(stream, "%sPC", (pb&0x7f)?",":"");
flags |= STEP_OUT;
}
break;
case DIR:
@ -279,7 +283,7 @@ offs_t m6x09_base_disassembler::disassemble(std::ostream &stream, offs_t pc, con
throw false;
}
return (p - pc) | op->flags() | SUPPORTED;
return (p - pc) | flags | SUPPORTED;
}
@ -346,9 +350,9 @@ const m6x09_base_disassembler::opcodeinfo m6x09_disassembler::m6x09_opcodes[] =
{ 0x35, 2, "PULS", PULS, M6x09_GENERAL },
{ 0x36, 2, "PSHU", PSHU, M6x09_GENERAL },
{ 0x37, 2, "PULU", PULU, M6x09_GENERAL },
{ 0x39, 1, "RTS", INH , M6x09_GENERAL },
{ 0x39, 1, "RTS", INH , M6x09_GENERAL, STEP_OUT },
{ 0x3A, 1, "ABX", INH, M6x09_GENERAL },
{ 0x3B, 1, "RTI", INH, M6x09_GENERAL },
{ 0x3B, 1, "RTI", INH, M6x09_GENERAL, STEP_OUT },
{ 0x3C, 2, "CWAI", IMM, M6x09_GENERAL },
{ 0x3D, 1, "MUL", INH, M6x09_GENERAL },
{ 0x3F, 1, "SWI", INH, M6x09_GENERAL },
@ -1162,7 +1166,7 @@ const m6x09_base_disassembler::opcodeinfo konami_disassembler::konami_opcodes[]
{ 0x8C, 1, "DECA", INH, M6x09_GENERAL },
{ 0x8D, 1, "DECB", INH, M6x09_GENERAL },
{ 0x8E, 2, "DEC", IND, M6x09_GENERAL },
{ 0x8F, 1, "RTS", INH , M6x09_GENERAL },
{ 0x8F, 1, "RTS", INH , M6x09_GENERAL, STEP_OUT },
{ 0x90, 1, "TSTA", INH, M6x09_GENERAL },
{ 0x91, 1, "TSTB", INH, M6x09_GENERAL },
@ -1179,7 +1183,7 @@ const m6x09_base_disassembler::opcodeinfo konami_disassembler::konami_opcodes[]
{ 0x9C, 1, "ASLA", INH, M6x09_GENERAL },
{ 0x9D, 1, "ASLB", INH, M6x09_GENERAL },
{ 0x9E, 2, "ASL", IND, M6x09_GENERAL },
{ 0x9F, 1, "RTI", INH , M6x09_GENERAL },
{ 0x9F, 1, "RTI", INH , M6x09_GENERAL, STEP_OUT },
{ 0xA0, 1, "ROLA", INH, M6x09_GENERAL },
{ 0xA1, 1, "ROLB", INH, M6x09_GENERAL },