// This file provides a version of the functions // // codegenTestX64_adhoc (src/jit-test/lib/codegen-x64-test.js) // codegenTestX86_adhoc (src/jit-test/lib/codegen-x86-test.js) // codegenTestARM64_adhoc (src/jit-test/lib/codegen-arm64-test.js) // (and the equivalent arm(32) function) // // generalised so the output can be specified for all 4 targets in one place. // // Usage: // codegenTestMultiplatform_adhoc(module_text, export_name, // expectedAllTargets, options = {}) // // where // `expectedAllTargets` states the expected-output regexps for each target, // thusly: // // {x64: 'text', x86: 'text', arm64: 'text', arm: 'text'} // // The arm(32) expected output is optional. The other 3 must be present. // // Each 'text' is a string that represents a regular expression, possibly // with newlines, representing the instruction or instructions we are looking // for for the operator. Spaces in the expected-pattern are arbitrary, we // preprocess the pattern to replace any space string with \s+. Lines are // separated by newlines and leading and trailing spaces are stripped. // Pattern strings may be empty, denoting "no instruction(s)". // // options specifies options thusly: // // instanceBox: if present, an object with a `value` property that will // receive the constructed instance // // log: for debugging -- print the disassembly and other info helpful to // resolving test failures. This is also printed on a test failure // regardless of the log setting. // // features: this is passed on verbatim to wasmEvalText, // as its third argument. // // no_prefix: by default, the required pattern must be immediately preceded // by `<target>_prefix`, and this is checked. Setting this to // true skips the check. Try not to use this. // // no_suffix: by default, the required pattern must be immediately followed // by `<target>_suffix`, and this is checked. Setting this to // true skips the check. Try not to use this. // // no_prefix/no_suffix apply to all 4 targets. Per-target overrides are // supported, by putting them in a suitably tagged sub-object, eg: // options = {x86: {no_prefix: true}}
load(libdir + "codegen-test-common.js");
// Architectures supported by this script. const knownArchs = ["x64", "x86", "arm64", "arm"];
// Architectures for which `expectedAllTargets` must supply an expected result. const requiredArchs = ["x64", "x86", "arm64"];
// These define the end-of-prologue ("prefix") and start-of-epilogue // ("suffix") to be matched. const archOptions =
{x64: {
encoding: `(?:${HEX}{2} )*`, // The move from r14 to rbp is writing the callee's wasm instance // into the frame for debug checks -- see WasmFrame.h.
prefix: `mov %rsp, %rbp(
movq %r14, (0x10|0x30)\\(%rbp\\))?`,
suffix: `pop %rbp`
},
x86: {
encoding: `(?:${HEX}{2} )*`, // The move from esi to rbp is writing the callee's wasm instance // into the frame for debug checks -- see WasmFrame.h. The mov to // e[ac]x is debug code, inserted by the register allocator to // clobber e[ac]x before a move group. But it is only present if // there is a move group there.
prefix: `mov %esp, %ebp(
movl %esi, 0x08\\(%rbp\\))?(
mov \\$0xDEADBEEF, %e.x)?`, // `.bp` because zydis chooses `rbp` even on 32-bit systems.
suffix: `pop %.bp`
},
arm64: {
encoding: `${HEX}{8}`, // The move from x23 to x29 is writing the callee's wasm instance // into the frame for debug checks -- see WasmFrame.h.
prefix: `mov x29, sp
mov x20, sp(
str x23, \\[x29, #16\\])?`,
suffix: `ldp x29, x30, \\[sp\\], #16`
},
arm: {
encoding: `${HEX}{8}\\s+${HEX}{8}`, // The move from r9 to fp is writing the callee's wasm instance into // the frame for debug checks -- see WasmFrame.h.
prefix: `str fp, \\[sp, #-4\\]!
mov fp, sp(
str r9, \\[fp, #\\+8\\])?`,
suffix: `ldr fp, \\[sp\\], #\\+4`
}
};
// The options object may a mix of generic (all-targets) options and contain // sub-objects containing arch-specific options, for example: // // {a_generic_option: 1337, x86: {no_prefix:true}, arm64: {foo:4771}} // // promoteArchSpecificOptions lifts options for `archName` to the top level // and deletes *all* arch-specific subobjects, hence producing the final // to-be-used option set. For the above example, if `archName` is "x86" we // get: // // {a_generic_option: 1337, no_prefix: true} // function promoteArchSpecificOptions(options, archName) {
assertEq(true, knownArchs.some(a => archName == a)); if (options.hasOwnProperty(archName)) {
let archOptions = options[archName]; for (optName in archOptions) {
options[optName] = archOptions[optName]; if (options.log) {
print("---- adding " + archName + "-specific option {"
+ optName + ":" + archOptions[optName] + "}");
}
}
} for (a of knownArchs) { delete options[a];
} if (options.log) {
print("---- final options"); for (optName in options) {
print("{" + optName + ":" + options[optName] + "}");
}
} return options;
}
// Main test function. See comments at top of this file. function codegenTestMultiplatform_adhoc(module_text, export_name,
expectedAllTargets, options = {}) {
assertEq(hasDisassembler(), true);
// Check that we've been provided with an expected result for at least // x64, x86 and arm64.
assertEq(true,
requiredArchs.every(a => expectedAllTargets.hasOwnProperty(a)));
// Poke the build-configuration object to find out what target we're // generating code for.
let genX64 = getBuildConfiguration("x64");
let genX86 = getBuildConfiguration("x86");
let genArm64 = getBuildConfiguration("arm64");
let genArm = getBuildConfiguration("arm"); // So far so good, except .. X64 or X86 might be emulating something else. if (genX64 && genArm64 && getBuildConfiguration("arm64-simulator")) {
genX64 = false;
} if (genX86 && genArm && getBuildConfiguration("arm-simulator")) {
genX86 = false;
}
// Check we've definitively identified exactly one architecture to test.
assertEq(1, [genX64, genX86, genArm64, genArm].map(x => x ? 1 : 0)
.reduce((a,b) => a+b, 0));
// Decide on the arch name for which we're testing. Everything is keyed // off this.
let archName = ""; if (genX64) {
archName = "x64";
} elseif (genX86) {
archName = "x86";
} elseif (genArm64) {
archName = "arm64";
} elseif (genArm) {
archName = "arm";
} if (options.log) {
print("---- testing for architecture \"" + archName + "\"");
} // If this fails, it means we're running on an "unknown" architecture.
assertEq(true, archName.length > 0);
// Finalise options, by promoting arch-specific ones to the top level of // the options object.
options = promoteArchSpecificOptions(options, archName);
// Get the architecture-specific strings for the target.
assertEq(true, archOptions.hasOwnProperty(archName));
let encoding = archOptions[archName].encoding;
let prefix = archOptions[archName].prefix;
let suffix = archOptions[archName].suffix;
assertEq(true, encoding.length > 0, `bad instruction encoding: ${encoding}`);
assertEq(true, prefix.length > 0, `bad prefix: ${prefix}`);
assertEq(true, suffix.length > 0, `bad suffix: ${suffix}`);
// Get the expected output string, or skip the test if no expected output // has been provided. Note, because of the assertion near the top of this // file, this will currently only allow arm(32) tests to be skipped.
let expected = ""; if (expectedAllTargets.hasOwnProperty(archName)) {
expected = expectedAllTargets[archName];
} else { // Paranoia. Don't want to silently skip tests due to logic bugs above.
assertEq(archName, "arm"); if (options.log) {
print("---- !! no expected output for target, skipping !!");
} return;
}
// Finalise the expected-result string, and stash the original for // debug-printing.
expectedInitial = expected; if (!options.no_prefix) {
expected = prefix + '\n' + expected;
} if (!options.no_suffix) {
expected = expected + '\n' + suffix;
}
expected = fixlines(expected);
// Compile the test case and collect disassembly output.
let ins = wasmEvalText(module_text, {}, options.features); if (options.instanceBox)
options.instanceBox.value = ins;
let output = wasmDis(ins.exports[export_name], {tier:"ion", asString:true});
let output_simple = stripencoding(output, encoding);
// Check for success, print diagnostics
let output_matches_expected = output_simple.match(new RegExp(expected)) != null; if (!output_matches_expected) {
print("---- adhoc-tier1-test.js: TEST FAILED ----");
} if (options.log && output_matches_expected) {
print("---- adhoc-tier1-test.js: TEST PASSED ----");
} if (options.log || !output_matches_expected) {
print("---- module text");
print(module_text);
print("---- actual");
print(output);
print("---- expected (initial)");
print(expectedInitial);
print("---- expected (as used)");
print(expected);
print("----");
}
// Finally, the whole point of this:
assertEq(output_matches_expected, true);
}
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