diff options
Diffstat (limited to 'lib/mjit/x86_assembler.rb')
| -rw-r--r-- | lib/mjit/x86_assembler.rb | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/lib/mjit/x86_assembler.rb b/lib/mjit/x86_assembler.rb index ad194185ae..890fa2b80a 100644 --- a/lib/mjit/x86_assembler.rb +++ b/lib/mjit/x86_assembler.rb @@ -34,7 +34,7 @@ module RubyVM::MJIT def add(dst, src) case [dst, src] - # ADD r/m64, imm8 + # ADD r/m64, imm8 (Mod 11) in [Symbol => dst_reg, Integer => src_imm] if r64?(dst_reg) && imm8?(src_imm) # REX.W + 83 /0 ib # MI: Operand 1: ModRM:r/m (r, w), Operand 2: imm8/16/32 @@ -44,6 +44,16 @@ module RubyVM::MJIT mod_rm: mod_rm(mod: 0b11, rm: reg_code(dst_reg)), imm: imm8(src_imm), ) + # ADD r/m64, imm8 (Mod 00) + in [[Symbol => dst_reg], Integer => src_imm] if r64?(dst_reg) && imm8?(src_imm) + # REX.W + 83 /0 ib + # MI: Operand 1: ModRM:r/m (r, w), Operand 2: imm8/16/32 + insn( + prefix: REX_W, + opcode: 0x83, + mod_rm: mod_rm(mod: 0b00, rm: reg_code(dst_reg)), # Mod 00: [reg] + imm: imm8(src_imm), + ) else raise NotImplementedError, "add: not-implemented operands: #{dst.inspect}, #{src.inspect}" end @@ -189,6 +199,14 @@ module RubyVM::MJIT @labels[label] = @bytes.size end + def incr_counter(name) + if C.mjit_opts.stats + comment("increment counter #{name}") + mov(:rax, C.rb_mjit_counters[name].to_i) + add([:rax], 1) # TODO: lock + end + end + private def insn(prefix: nil, opcode:, mod_rm: nil, disp: nil, imm: nil) |