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sparc: Re-support certain instructions in SPARClite disassembly

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This commit is contained in:
AJR 2022-08-27 10:38:08 -04:00
parent 614942b131
commit c26f3dd96b
1 changed files with 7 additions and 6 deletions
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13
src/devices/cpu/sparc/sparcdasm.cpp
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@ -873,7 +873,7 @@ offs_t sparc_disassembler::dasm(std::ostream &stream, offs_t pc, uint32_t op) co
case 0x28:
return dasm_read_state_reg(stream, pc, op);
case 0x29:
if (m_version <= v8)
if (m_version < v9)
{
util::stream_format(stream, "%-*s%%psr,%s", m_op_field_width, "rd", REG_NAMES[RD]);
return 4 | SUPPORTED;
@ -979,7 +979,7 @@ offs_t sparc_disassembler::dasm(std::ostream &stream, offs_t pc, uint32_t op) co
}
break;
case 0x33:
if (m_version <= v8)
if (m_version < v9)
{
if (RS1 == 0)
{
@ -1152,9 +1152,9 @@ offs_t sparc_disassembler::dasm_read_state_reg(std::ostream &stream, offs_t pc,
util::stream_format(stream, "%-*s%%y,%s", m_op_field_width, "rd", REG_NAMES[RD]);
return 4 | SUPPORTED;
}
else if ((m_version == v8) || ((m_version >= v9) && !USEIMM))
else if ((m_version == v8) || (m_version == sparclite) || ((m_version >= v9) && !USEIMM))
{
if (!USEIMM && (RS1 == 15) && (RD == 0))
if (!USEIMM && (RS1 == 15) && (RD == 0) && (m_version != sparclite))
{
util::stream_format(stream, "stbar");
return 4 | SUPPORTED;
@ -1482,6 +1482,7 @@ offs_t sparc_disassembler::dasm_ldst(std::ostream &stream, offs_t pc, uint32_t o
util::stream_format(stream, "%-*s[", m_op_field_width, "ldx");
dasm_address(stream, op);
util::stream_format(stream, "],%%efsr");
return 4 | SUPPORTED;
}
break;
case 0x25: // Store floating-point state register
@ -1548,8 +1549,8 @@ offs_t sparc_disassembler::dasm_ldst(std::ostream &stream, offs_t pc, uint32_t o
dasm_address(stream, op);
stream << ']';
return 4 | SUPPORTED;
case 0x26: // Store Floating-point deferred-trap Queue
case 0x36: // Store Coprocessor deferred-trap Queue
case 0x26: // Store Double Floating-point deferred-trap Queue
case 0x36: // Store Double Coprocessor deferred-trap Queue
util::stream_format(stream, "%-*s%%%cq,[", m_op_field_width, "std", (OP3 == 0x36) ? 'c' : 'f');
dasm_address(stream, op);
stream << ']';