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generate_jit: Refactor to deduplicate custom call generation

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This commit is contained in:
Amaan Cheval 2018-02-23 13:56:33 +05:30 • committed by Fabian
parent b2e44e2340
commit b36a03ca40
1 changed files with 19 additions and 22 deletions
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41
gen/generate_jit.js
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@ -150,6 +150,21 @@ function get_nonfaulting_mem_reg_postfix(encoding)
};
}
function gen_custom_call(encoding, size, args)
{
console.assert(!encoding.nonfaulting, "Prefix/custom instructions cannot be marked as nonfaulting.");
const instruction_name = make_instruction_name(encoding, size) + "_jit";
const imm_read = gen_read_imm_call(encoding, size);
if(imm_read)
{
args.push(imm_read);
}
return gen_call(instruction_name, args);
}
function gen_instruction_body(encodings, size)
{
const encoding = encodings[0];
@ -207,19 +222,11 @@ function gen_instruction_body(encodings, size)
const instruction_postfix = case_.jump ? ["instr_flags |= JIT_INSTR_JUMP_FLAG;"] : [];
if(case_.custom)
{
console.assert(!case_.nonfaulting, "Unsupported: custom fixed_g instruction as nonfaulting");
const instruction_name = make_instruction_name(case_, size) + "_jit";
const imm_read = gen_read_imm_call(case_, size);
const args = ["modrm_byte"];
if(imm_read)
{
args.push(imm_read);
}
const custom_call = gen_custom_call(case_, size, ["modrm_byte"]);
return {
conditions: [fixed_g],
body: [gen_call(instruction_name, args)].concat(instruction_postfix),
body: [custom_call].concat(instruction_postfix),
};
}
@ -417,20 +424,10 @@ function gen_instruction_body(encodings, size)
}
else if(encoding.prefix || encoding.custom)
{
console.assert(!encoding.nonfaulting, "Prefix/custom instructions cannot be marked as nonfaulting.");
const instruction_name = make_instruction_name(encoding, size) + "_jit";
const imm_read = gen_read_imm_call(encoding, size);
const args = [];
if(imm_read)
{
args.push(imm_read);
}
const custom_call = gen_custom_call(encoding, size, []);
const call_prefix = encoding.prefix ? "instr_flags |= " : "";
// Prefix calls can add to the return flags
return [call_prefix + gen_call(instruction_name, args)].concat(instruction_postfix);
return [call_prefix + custom_call].concat(instruction_postfix);
}
else
{