From 29d1c0822c8b6b49a0af519fa7bede763ab0955e Mon Sep 17 00:00:00 2001
From: Skyth <19259897+blueskythlikesclouds@users.noreply.github.com>
Date: Fri, 13 Sep 2024 21:36:25 +0300
Subject: [PATCH] Add/subtract with carry instructions.

---
 PowerRecomp/main.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/PowerRecomp/main.cpp b/PowerRecomp/main.cpp
index 28fdaf2..43f4518 100644
--- a/PowerRecomp/main.cpp
+++ b/PowerRecomp/main.cpp
@@ -96,6 +96,9 @@ int main()
                     break;
 
                 case PPC_INST_ADDIC:
+                    std::println(f, "\tctx.xer.ca = _addcarry_u64(0, ctx.r{}.u64, uint64_t(int64_t({})), &ctx.r{}.u64);", insn.operands[1], static_cast<int32_t>(insn.operands[2]), insn.operands[0]);
+                    if (insn.opcode->opcode & 0x1)
+                        std::println(f, "\tctx.cr0.compare<int32_t>(ctx.r{}.s32, 0, ctx.xer);", insn.operands[0]);
                     break;
 
                 case PPC_INST_ADDIS:
@@ -103,6 +106,9 @@ int main()
                     break;
 
                 case PPC_INST_ADDZE:
+                    std::println(f, "\tctx.xer.ca = _addcarry_u64(ctx.xer.ca, ctx.r{}.u64, 0, &ctx.r{}.u64);", insn.operands[1], insn.operands[0]);
+                    if (insn.opcode->opcode & 0x1)
+                        std::println(f, "\tctx.cr0.compare<int32_t>(ctx.r{}.s32, 0, ctx.xer);", insn.operands[0]);
                     break;
 
                 case PPC_INST_AND:
@@ -783,8 +789,19 @@ int main()
                     break;
 
                 case PPC_INST_SUBFC:
+                    std::println(f, "\tctx.xer.ca = _subborrow_u64(0, ctx.r{}.u64, ctx.r{}.u64, &ctx.r{}.u64);", insn.operands[2], insn.operands[1], insn.operands[0]);
+                    if (insn.opcode->opcode & 0x1)
+                        std::println(f, "\tctx.cr0.compare<int32_t>(ctx.r{}.s32, 0, ctx.xer);", insn.operands[0]);
+                    break;
+
                 case PPC_INST_SUBFE:
+                    std::println(f, "\tctx.xer.ca = _addcarry_u64(ctx.xer.ca, ~ctx.r{}.u64, ctx.r{}.u64, &ctx.r{}.u64);", insn.operands[1], insn.operands[2], insn.operands[0]);
+                    break;
+
                 case PPC_INST_SUBFIC:
+                    std::println(f, "\tctx.xer.ca = _subborrow_u64(0, uint64_t(int64_t({})), ctx.r{}.u64, &ctx.r{}.u64);", static_cast<int32_t>(insn.operands[2]), insn.operands[1], insn.operands[0]);
+                    break;
+
                 case PPC_INST_SYNC:
                 case PPC_INST_TDLGEI:
                 case PPC_INST_TDLLEI: