Mercury/N64Recomp
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Changed RSP recompiler to emit different macros for loads and stores to handle unaligned access

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This commit is contained in:
Mr-Wiseguy 2024-04-20 20:02:28 -04:00
parent 47c9033b61
commit 32841e85b4
1 changed files with 10 additions and 9 deletions
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19
RSPRecomp/src/rsp_recomp.cpp
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@ -419,26 +419,26 @@ bool process_instruction(size_t instr_index, const std::vector<rabbitizer::Instr
// Loads
// TODO ld
case InstrId::rsp_lw:
print_line("{}{} = RSP_MEM_W({}, {}{})", ctx_gpr_prefix(rt), rt, signed_imm_string, ctx_gpr_prefix(base), base);
print_line("{}{} = RSP_MEM_W_LOAD({}, {}{})", ctx_gpr_prefix(rt), rt, signed_imm_string, ctx_gpr_prefix(base), base);
break;
case InstrId::rsp_lh:
print_line("{}{} = RSP_MEM_H({}, {}{})", ctx_gpr_prefix(rt), rt, signed_imm_string, ctx_gpr_prefix(base), base);
print_line("{}{} = RSP_MEM_H_LOAD({}, {}{})", ctx_gpr_prefix(rt), rt, signed_imm_string, ctx_gpr_prefix(base), base);
break;
case InstrId::rsp_lb:
print_line("{}{} = RSP_MEM_B({}, {}{})", ctx_gpr_prefix(rt), rt, signed_imm_string, ctx_gpr_prefix(base), base);
break;
case InstrId::rsp_lhu:
print_line("{}{} = RSP_MEM_HU({}, {}{})", ctx_gpr_prefix(rt), rt, signed_imm_string, ctx_gpr_prefix(base), base);
print_line("{}{} = RSP_MEM_HU_LOAD({}, {}{})", ctx_gpr_prefix(rt), rt, signed_imm_string, ctx_gpr_prefix(base), base);
break;
case InstrId::rsp_lbu:
print_line("{}{} = RSP_MEM_BU({}, {}{})", ctx_gpr_prefix(rt), rt, signed_imm_string, ctx_gpr_prefix(base), base);
break;
// Stores
case InstrId::rsp_sw:
print_line("RSP_MEM_W({}, {}{}) = {}{}", signed_imm_string, ctx_gpr_prefix(base), base, ctx_gpr_prefix(rt), rt);
print_line("RSP_MEM_W_STORE({}, {}{}, {}{})", signed_imm_string, ctx_gpr_prefix(base), base, ctx_gpr_prefix(rt), rt);
break;
case InstrId::rsp_sh:
print_line("RSP_MEM_H({}, {}{}) = {}{}", signed_imm_string, ctx_gpr_prefix(base), base, ctx_gpr_prefix(rt), rt);
print_line("RSP_MEM_H_STORE({}, {}{}, {}{})", signed_imm_string, ctx_gpr_prefix(base), base, ctx_gpr_prefix(rt), rt);
break;
case InstrId::rsp_sb:
print_line("RSP_MEM_B({}, {}{}) = {}{}", signed_imm_string, ctx_gpr_prefix(base), base, ctx_gpr_prefix(rt), rt);
@ -514,16 +514,17 @@ bool process_instruction(size_t instr_index, const std::vector<rabbitizer::Instr
return true;
}
void write_indirect_jumps(std::ofstream& output_file, const BranchTargets& branch_targets) {
void write_indirect_jumps(std::ofstream& output_file, const BranchTargets& branch_targets, const std::string& output_function_name) {
fmt::print(output_file,
"do_indirect_jump:\n"
" switch (jump_target & {:#X}) {{ \n", rsp_mem_mask);
" switch ((jump_target | 0x1000) & {:#X}) {{ \n", rsp_mem_mask);
for (uint32_t branch_target: branch_targets.indirect_targets) {
fmt::print(output_file, " case 0x{0:04X}: goto L_{0:04X};\n", branch_target);
}
fmt::print(output_file,
" }}\n"
" return RspExitReason::UnhandledJumpTarget;\n");
" printf(\"Unhandled jump target 0x%04X in microcode {}\\n\", jump_target);\n"
" return RspExitReason::UnhandledJumpTarget;\n", output_function_name);
}
// TODO de-hardcode these
@ -647,7 +648,7 @@ int main() {
fmt::print(output_file, " return RspExitReason::ImemOverrun;\n");
// Write the section containing the indirect jump table
write_indirect_jumps(output_file, branch_targets);
write_indirect_jumps(output_file, branch_targets, output_function_name);
// End the file
fmt::print(output_file, "}}\n");