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Guard against implicitly forwarded block

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John Hawthorn 2021-06-09 16:31:32 -07:00 • committed by Alan Wu
parent ecd4487a48
commit 0fb2926097
1 changed files with 14 additions and 0 deletions
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14
yjit_codegen.c
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@ -2967,6 +2967,20 @@ gen_invokesuper(jitstate_t *jit, ctx_t *ctx)
// Guard that the receiver has the same class as the one from compile time // Guard that the receiver has the same class as the one from compile time
uint8_t *side_exit = yjit_side_exit(jit, ctx); uint8_t *side_exit = yjit_side_exit(jit, ctx);
if (!block) {
// Guard no block passed
// rb_vm_frame_block_handler(GET_EC()->cfp) == VM_BLOCK_HANDLER_NONE
// note, we assume VM_ASSERT(VM_ENV_LOCAL_P(ep))
//
// TODO: this could properly forward the current block handler, but
// would require changes to gen_send_*
ADD_COMMENT(cb, "guard no block given");
mov(cb, REG0, member_opnd(REG_CFP, rb_control_frame_t, ep));
mov(cb, REG0, mem_opnd(64, REG0, SIZEOF_VALUE * VM_ENV_DATA_INDEX_SPECVAL));
cmp(cb, REG0, imm_opnd(VM_BLOCK_HANDLER_NONE));
jne_ptr(cb, side_exit);
}
// Points to the receiver operand on the stack // Points to the receiver operand on the stack
x86opnd_t recv = ctx_stack_opnd(ctx, argc); x86opnd_t recv = ctx_stack_opnd(ctx, argc);
insn_opnd_t recv_opnd = OPND_STACK(argc); insn_opnd_t recv_opnd = OPND_STACK(argc);