diff options
| author | Takashi Kokubun <[email protected]> | 2023-01-02 22:53:14 -0800 |
|---|---|---|
| committer | Takashi Kokubun <[email protected]> | 2023-03-05 22:11:20 -0800 |
| commit | a8dec34961d7734ad975e44efa8aae361a1c4f5a (patch) | |
| tree | 5849c716f37c959d9276ddb8c598fe1142a7f6fa /lib/ruby_vm/mjit/assembler.rb | |
| parent | 21696ad81ec40cf9cd146836dc8c945f1e485774 (diff) | |
Implement initial opt_lt
Diffstat (limited to 'lib/ruby_vm/mjit/assembler.rb')
| -rw-r--r-- | lib/ruby_vm/mjit/assembler.rb | 63 |
1 files changed, 58 insertions, 5 deletions
diff --git a/lib/ruby_vm/mjit/assembler.rb b/lib/ruby_vm/mjit/assembler.rb index c55df0235d..bc42ad1a6a 100644 --- a/lib/ruby_vm/mjit/assembler.rb +++ b/lib/ruby_vm/mjit/assembler.rb @@ -6,7 +6,7 @@ module RubyVM::MJIT # A thin Fiddle wrapper to write bytes to memory ByteWriter = CType::Immediate.parse('char') - # Used for rel8 jumps + # rel8 jumps are made with labels class Label < Data.define(:id, :name); end # rel32 is inserted as [Rel32, Rel32Pad..] and converted on #resolve_rel32 @@ -20,7 +20,6 @@ module RubyVM::MJIT Mod10 = 0b10 # Mod 10: [reg]+disp16 Mod11 = 0b11 # Mod 11: reg - ### prefix ### # REX = 0100WR0B REX_B = 0b01000001 REX_R = 0b01000100 @@ -94,6 +93,50 @@ module RubyVM::MJIT insn(opcode: 0xe8, imm: rel32(addr)) end + def cmovl(dst, src) + case [dst, src] + # CMOVL r64, r/m64 (Mod 11: reg) + in [Symbol => dst_reg, Symbol => src_reg] + # REX.W + 0F 4C /r + # RM: Operand 1: ModRM:reg (r, w), Operand 2: ModRM:r/m (r) + insn( + prefix: REX_W, + opcode: [0x0f, 0x4c], + mod_rm: ModRM[mod: Mod11, reg: dst_reg, rm: src_reg], + ) + else + raise NotImplementedError, "cmovl: not-implemented operands: #{dst.inspect}, #{src.inspect}" + end + end + + def cmp(left, right) + case [left, right] + # CMP r/m64 r64 (Mod 01: [reg]+disp8) + in [[Symbol => left_reg, Integer => left_disp], Symbol => right_reg] + # REX.W + 39 /r + # MR: Operand 1: ModRM:r/m (r), Operand 2: ModRM:reg (r) + insn( + prefix: REX_W, + opcode: 0x39, + mod_rm: ModRM[mod: Mod01, reg: right_reg, rm: left_reg], + disp: left_disp, + ) + else + raise NotImplementedError, "cmp: not-implemented operands: #{left.inspect}, #{right.inspect}" + end + end + + def je(dst) + case dst + # JE rel32 + in Integer => dst_addr + # 0F 84 cd + insn(opcode: [0x0f, 0x84], imm: rel32(dst_addr)) + else + raise NotImplementedError, "je: not-implemented operands: #{dst.inspect}" + end + end + def jmp(dst) case dst # JMP rel32 @@ -285,6 +328,16 @@ module RubyVM::MJIT def test(left, right) case [left, right] + # TEST r/m8*, imm8 (Mod 01: [reg]+disp8) + in [[Symbol => left_reg, Integer => left_disp], Integer => right_imm] if imm8?(right_imm) + # REX + F6 /0 ib + # MI: Operand 1: ModRM:r/m (r), Operand 2: imm8/16/32 + insn( + opcode: 0xf6, + mod_rm: ModRM[mod: Mod01, reg: 0, rm: left_reg], + disp: left_disp, + imm: imm8(right_imm), + ) # TEST r/m32, r32 (Mod 11: reg) in [Symbol => left_reg, Symbol => right_reg] if r32?(left_reg) && r32?(right_reg) # 85 /r @@ -294,7 +347,7 @@ module RubyVM::MJIT mod_rm: ModRM[mod: Mod11, reg: right_reg, rm: left_reg], ) else - raise NotImplementedError, "pop: not-implemented operands: #{dst.inspect}" + raise NotImplementedError, "test: not-implemented operands: #{left.inspect}, #{right.inspect}" end end @@ -442,7 +495,7 @@ module RubyVM::MJIT unless imm8?(imm) raise ArgumentError, "unexpected imm8: #{imm}" end - imm_bytes(imm, 1) + [imm].pack('c').unpack('c*') # TODO: consider uimm end # id: 4 bytes @@ -450,7 +503,7 @@ module RubyVM::MJIT unless imm32?(imm) raise ArgumentError, "unexpected imm32: #{imm}" end - [imm].pack('l').unpack('c*') + [imm].pack('l').unpack('c*') # TODO: consider uimm end # io: 8 bytes |