6502/6502-cpp
1
0
Fork 0
mirror of https://github.com/lefticus/6502-cpp.git synced 2025-10-30 21:16:03 +00:00
Code Issues Projects Releases Wiki Activity

Add jmp instruction support

Browse Source
This commit is contained in:
Jason Turner
2021-05-21 12:18:13 -06:00
parent a04c937aeb
commit 7f8516d61d
1 changed files with 5 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/6502-c++.cpp
View File

@@ -105,6 +105,8 @@ struct AVR : ASMLine
inc, inc,
icall, icall,
jmp,
ld, ld,
ldd, ldd,
ldi, ldi,
@@ -193,6 +195,7 @@ struct AVR : ASMLine
if (o == "out") { return OpCode::out; } if (o == "out") { return OpCode::out; }
if (o == "inc") { return OpCode::inc; } if (o == "inc") { return OpCode::inc; }
if (o == "nop") { return OpCode::nop; } if (o == "nop") { return OpCode::nop; }
if (o == "jmp") { return OpCode::jmp; }
} }
} }
throw std::runtime_error(fmt::format("Unknown opcode: {}", o)); throw std::runtime_error(fmt::format("Unknown opcode: {}", o));
@@ -343,6 +346,8 @@ void translate_instruction(const Personality &personality,
const auto o2_reg_num = translate_register_number(o2); const auto o2_reg_num = translate_register_number(o2);
switch (op) { switch (op) {
case AVR::OpCode::jmp: instructions.emplace_back(mos6502::OpCode::jmp, o1); return;
case AVR::OpCode::dec: instructions.emplace_back(mos6502::OpCode::dec, personality.get_register(o1_reg_num)); return; case AVR::OpCode::dec: instructions.emplace_back(mos6502::OpCode::dec, personality.get_register(o1_reg_num)); return;
case AVR::OpCode::ldi: case AVR::OpCode::ldi:
instructions.emplace_back(mos6502::OpCode::lda, Operand(o2.type, fixup_8bit_literal(o2.value))); instructions.emplace_back(mos6502::OpCode::lda, Operand(o2.type, fixup_8bit_literal(o2.value)));