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cr16b: Fix sign extension of branch displacements in disassembly

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This commit is contained in:
AJR 2022-08-18 18:39:08 -04:00
parent b0cb5ce1bd
commit 3d83e68f3e
1 changed files with 5 additions and 5 deletions
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10
src/devices/cpu/cr16b/cr16bdasm.cpp
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@ -234,22 +234,22 @@ void cr16b_disassembler::format_abs18(std::ostream &stream, u32 addr)
void cr16b_disassembler::format_pc_disp5(std::ostream &stream, offs_t pc, u8 disp) void cr16b_disassembler::format_pc_disp5(std::ostream &stream, offs_t pc, u8 disp)
{ {
if (m_arch == cr16_arch::CR16A) if (m_arch == cr16_arch::CR16A)
util::stream_format(stream, "0x%05X", (disp >= 0x10 ? pc + 0x20 - disp : pc + disp) & 0x1ffff); // SMM util::stream_format(stream, "0x%05X", (pc + disp - (disp >= 0x10 ? 0x20 : 0)) & 0x1ffff); // SMM
else else
util::stream_format(stream, "0x%06X", (disp >= 0x10 ? pc + 0x20 - disp : pc + disp) & 0x1fffff); // LMM util::stream_format(stream, "0x%06X", (pc + disp - (disp >= 0x10 ? 0x20 : 0)) & 0x1fffff); // LMM
} }
void cr16b_disassembler::format_pc_disp9(std::ostream &stream, offs_t pc, u16 disp) void cr16b_disassembler::format_pc_disp9(std::ostream &stream, offs_t pc, u16 disp)
{ {
if (m_arch == cr16_arch::CR16A) if (m_arch == cr16_arch::CR16A)
util::stream_format(stream, "0x%05X", (disp >= 0x100 ? pc + 0x200 - disp : pc + disp) & 0x1ffff); // SMM util::stream_format(stream, "0x%05X", (pc + disp - (disp >= 0x100 ? 0x200 : 0)) & 0x1ffff); // SMM
else else
util::stream_format(stream, "0x%06X", (disp >= 0x100 ? pc + 0x200 - disp : pc + disp) & 0x1fffff); // LMM util::stream_format(stream, "0x%06X", (pc + disp - (disp >= 0x100 ? 0x200 : 0)) & 0x1fffff); // LMM
} }
void cr16b_disassembler::format_pc_disp17(std::ostream &stream, offs_t pc, u32 disp) void cr16b_disassembler::format_pc_disp17(std::ostream &stream, offs_t pc, u32 disp)
{ {
util::stream_format(stream, "0x%05X", (disp >= 0x10000 ? pc + 0x20000 - disp : pc + disp) & 0x1ffff); util::stream_format(stream, "0x%05X", (pc + disp - (disp >= 0x10000 ? 0x20000 : 0)) & 0x1ffff);
} }
void cr16b_disassembler::format_pc_disp21(std::ostream &stream, offs_t pc, u32 disp) void cr16b_disassembler::format_pc_disp21(std::ostream &stream, offs_t pc, u32 disp)