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Start implementing BBV primitives

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Maxime Chevalier-Boisvert 2020-12-10 16:59:13 -05:00 • committed by Alan Wu
parent f7717b1d46
commit 20f5b7426e
5 changed files with 70 additions and 27 deletions
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13
ujit_codegen.c
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@ -34,6 +34,9 @@ static void
ujit_gen_entry(codeblock_t* cb)
{
cb_write_pre_call_bytes(cb);
// Load the current SP from the CFP into REG_SP
mov(cb, REG_SP, member_opnd(REG_CFP, rb_control_frame_t, sp));
}
/**
@ -98,7 +101,7 @@ Compile a sequence of bytecode instructions starting at `insn_idx`.
Returns `NULL` if compilation fails.
*/
uint8_t *
ujit_compile_block(const rb_iseq_t *iseq, unsigned int insn_idx)
ujit_compile_block(const rb_iseq_t *iseq, unsigned int insn_idx, bool gen_entry)
{
assert (cb != NULL);
unsigned first_insn_idx = insn_idx;
@ -147,12 +150,10 @@ ujit_compile_block(const rb_iseq_t *iseq, unsigned int insn_idx)
break;
}
// Write the pre call bytes before the first instruction
if (num_instrs == 0) {
// If requested, write the interpreter entry
// prologue before the first instruction
if (gen_entry && num_instrs == 0) {
ujit_gen_entry(cb);
// Load the current SP from the CFP into REG_SP
mov(cb, REG_SP, member_opnd(REG_CFP, rb_control_frame_t, sp));
}
// Call the code generation function