3 files changed, 86 insertions, 11 deletions
diff --git a/lib/ruby_vm/mjit/compiler.rb b/lib/ruby_vm/mjit/compiler.rb
index b24cfe6a7b..532dbe01ea 100644
--- a/lib/ruby_vm/mjit/compiler.rb
+++ b/lib/ruby_vm/mjit/compiler.rb
@@ -153,7 +153,66 @@ module RubyVM::MJIT
       asm.comment("Insn: #{insn.name}")
 
       case insn.name
+      # nop
+      # getlocal
+      # setlocal
+      # getblockparam
+      # setblockparam
+      # getblockparamproxy
+      # getspecial
+      # setspecial
+      # getinstancevariable
+      # setinstancevariable
+      # getclassvariable
+      # setclassvariable
+      # opt_getconstant_path
+      # getconstant
+      # setconstant
+      # getglobal
+      # setglobal
       when :putnil then @insn_compiler.putnil(jit, ctx, asm)
+      # putself
+      when :putobject then @insn_compiler.putobject(jit, ctx, asm)
+      # putspecialobject
+      # putstring
+      # concatstrings
+      # anytostring
+      # toregexp
+      # intern
+      # newarray
+      # newarraykwsplat
+      # duparray
+      # duphash
+      # expandarray
+      # concatarray
+      # splatarray
+      # newhash
+      # newrange
+      # pop
+      # dup
+      # dupn
+      # swap
+      # opt_reverse
+      # topn
+      # setn
+      # adjuststack
+      # defined
+      # checkmatch
+      # checkkeyword
+      # checktype
+      # defineclass
+      # definemethod
+      # definesmethod
+      # send
+      # opt_send_without_block
+      # objtostring
+      # opt_str_freeze
+      # opt_nil_p
+      # opt_str_uminus
+      # opt_newarray_max
+      # opt_newarray_min
+      # invokesuper
+      # invokeblock
       when :leave  then @insn_compiler.leave(jit, ctx, asm)
       # throw
       # jump
diff --git a/lib/ruby_vm/mjit/insn_compiler.rb b/lib/ruby_vm/mjit/insn_compiler.rb
index 091afaa214..405703e3ff 100644
--- a/lib/ruby_vm/mjit/insn_compiler.rb
+++ b/lib/ruby_vm/mjit/insn_compiler.rb
@@ -4,7 +4,7 @@ module RubyVM::MJIT
   #  sp: rbx
   # scratch regs: rax
   class InsnCompiler
-    # 3/101
+    # 4/101
 
     # nop
     # getlocal
@@ -34,7 +34,27 @@ module RubyVM::MJIT
     end
 
     # putself
-    # putobject
+
+    # @param jit [RubyVM::MJIT::JITState]
+    # @param ctx [RubyVM::MJIT::Context]
+    # @param asm [RubyVM::MJIT::X86Assembler]
+    def putobject(jit, ctx, asm)
+      # Get operands
+      val = jit.operand(0)
+
+      # Push it to the stack
+      # TODO: GC offsets
+      if asm.imm32?(val)
+        asm.mov([SP, C.VALUE.size * ctx.stack_size], val)
+      else # 64-bit immediates can't be directly written to memory
+        asm.mov(:rax, val)
+        asm.mov([SP, C.VALUE.size * ctx.stack_size], :rax)
+      end
+
+      ctx.stack_size += 1
+      KeepCompiling
+    end
+
     # putspecialobject
     # putstring
     # concatstrings
diff --git a/lib/ruby_vm/mjit/x86_assembler.rb b/lib/ruby_vm/mjit/x86_assembler.rb
index 1eef272eb4..fddd39f933 100644
--- a/lib/ruby_vm/mjit/x86_assembler.rb
+++ b/lib/ruby_vm/mjit/x86_assembler.rb
@@ -245,6 +245,10 @@ module RubyVM::MJIT
       end
     end
 
+    def imm32?(imm)
+      (-0x8000_0000..0x7fff_ffff).include?(imm) # TODO: consider uimm
+    end
+
     private
 
     def insn(prefix: nil, opcode:, mod_rm: nil, disp: nil, imm: nil)
@@ -347,16 +351,8 @@ module RubyVM::MJIT
       (-0x80..0x7f).include?(imm)
     end
 
-    def imm32?(imm)
-      raise "negative imm not supported: #{imm}" if imm.negative? # TODO: support this
-      # TODO: consider rejecting small values
-      imm <= 0x7fff_ffff # TODO: consider uimm
-    end
-
     def imm64?(imm)
-      raise "negative imm not supported: #{imm}" if imm.negative? # TODO: support this
-      # TODO: consider rejecting small values
-      imm <= 0x7fff_ffff_ffff_ffff # TODO: consider uimm
+      (-0x8000_0000_0000_0000..0x7fff_ffff_ffff_ffff).include?(imm) # TODO: consider uimm
     end
 
     def r32?(reg)