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Implement stackoverflow check

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This commit is contained in:
Takashi Kokubun 2023-02-09 14:38:41 -08:00
parent ac7b2f0d17
commit 2c87cf8013
5 changed files with 45 additions and 7 deletions
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32
lib/ruby_vm/mjit/assembler.rb
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@ -184,11 +184,31 @@ module RubyVM::MJIT
mod_rm: ModRM[mod: Mod01, reg: right_reg, rm: left_reg],
disp: left_disp,
)
# CMP r/m64, r64 (Mod 11: reg)
in [Symbol => left_reg, Symbol => right_reg] if r64?(left_reg) && r64?(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: Mod11, reg: right_reg, rm: left_reg],
)
else
raise NotImplementedError, "cmp: not-implemented operands: #{left.inspect}, #{right.inspect}"
end
end
def jbe(dst)
case dst
# JBE rel32
in Integer => dst_addr
# 0F 86 cd
insn(opcode: [0x0f, 0x86], imm: rel32(dst_addr))
else
raise NotImplementedError, "jbe: not-implemented operands: #{dst.inspect}"
end
end
def je(dst)
case dst
# JE rel32
@ -277,7 +297,17 @@ module RubyVM::MJIT
prefix: REX_W,
opcode: 0x8d,
mod_rm: ModRM[mod: Mod01, reg: dst_reg, rm: src_reg],
disp: src_disp,
disp: imm8(src_disp),
)
# LEA r64,m (Mod 10: [reg]+disp32)
in [Symbol => dst_reg, [Symbol => src_reg, Integer => src_disp]] if r64?(dst_reg) && r64?(src_reg) && imm32?(src_disp)
# REX.W + 8D /r
# RM: Operand 1: ModRM:reg (w), Operand 2: ModRM:r/m (r)
insn(
prefix: REX_W,
opcode: 0x8d,
mod_rm: ModRM[mod: Mod10, reg: dst_reg, rm: src_reg],
disp: imm32(src_disp),
)
else
raise NotImplementedError, "lea: not-implemented operands: #{dst.inspect}, #{src.inspect}"