def test_llvm(self):
LLVM_WARNING = 'LLVM version appears incorrect'
restore_and_set_up()
# Clang should report the version number we expect, and emcc should not warn
assert shared.check_llvm_version()
output = self.check_working(EMCC)
self.assertNotContained(LLVM_WARNING, output)
# Fake a different llvm version
restore_and_set_up()
with open(CONFIG_FILE, 'a') as f:
f.write('LLVM_ROOT = "' + self.in_dir('fake') + '"')
real_version_x, real_version_y = (
int(x) for x in expected_llvm_version().split('.'))
if shared.get_llvm_target() == shared.WASM_TARGET:
make_fake_llc(self.in_dir('fake', 'llc'),
'wasm32 - WebAssembly 32-bit')
make_fake_lld(self.in_dir('fake', 'wasm-ld'))
else:
make_fake_llc(self.in_dir('fake', 'llc'),
'js - JavaScript (asm.js, emscripten)')
with env_modify({'EM_IGNORE_SANITY': '1'}):
for inc_x in range(-2, 3):
for inc_y in range(-2, 3):
expected_x = real_version_x + inc_x
expected_y = real_version_y + inc_y
if expected_x < 0 or expected_y < 0:
continue # must be a valid llvm version
print("mod LLVM version: %d %d -> %d %d" %
(real_version_x, real_version_x, expected_x,
expected_y))
make_fake_clang(self.in_dir('fake', 'clang'),
'%s.%s' % (expected_x, expected_y))
did_modify = inc_x != 0 or inc_y != 0
if did_modify:
output = self.check_working(EMCC, LLVM_WARNING)
else:
output = self.check_working(EMCC)
self.assertNotContained(LLVM_WARNING, output)
return y->y;
}
''', ['libcxxabi.bc'])
elif what == 'gl':
build('''
extern "C" { extern void* emscripten_GetProcAddress(const char *x); }
int main() {
return int(emscripten_GetProcAddress("waka waka"));
}
''', ['gl.bc'])
elif what == 'native_optimizer':
build('''
int main() {}
''', ['optimizer.2.exe'], ['-O2'])
elif what == 'wasm_compiler_rt':
if shared.get_llvm_target() == shared.WASM_TARGET:
build('''
int main() {}
''', ['wasm_compiler_rt.a'], ['-s', 'BINARYEN=1'])
else:
shared.logging.warning('wasm_compiler_rt not built when using JSBackend')
elif what == 'zlib':
build_port('zlib', 'libz.a', ['-s', 'USE_ZLIB=1'])
elif what == 'bullet':
build_port('bullet', 'libbullet.bc', ['-s', 'USE_BULLET=1'])
elif what == 'vorbis':
build_port('vorbis', 'libvorbis.bc', ['-s', 'USE_VORBIS=1'])
elif what == 'ogg':
build_port('ogg', 'libogg.bc', ['-s', 'USE_OGG=1'])
elif what == 'libpng':
build_port('libpng', 'libpng.bc', ['-s', 'USE_ZLIB=1', '-s', 'USE_LIBPNG=1'])
}
''', ['libcxxabi.bc'])
elif what == 'gl':
build(
'''
extern "C" { extern void* emscripten_GetProcAddress(const char *x); }
int main() {
return int(emscripten_GetProcAddress("waka waka"));
}
''', ['gl.bc'])
elif what == 'native_optimizer':
build('''
int main() {}
''', ['optimizer.2.exe'], ['-O2'])
elif what == 'wasm_compiler_rt':
if shared.get_llvm_target() == shared.WASM_TARGET:
build('''
int main() {}
''', ['wasm_compiler_rt.a'], ['-s', 'BINARYEN=1'])
else:
shared.logging.warning(
'wasm_compiler_rt not built when using JSBackend')
elif what == 'zlib':
build_port('zlib', 'libz.a', ['-s', 'USE_ZLIB=1'])
elif what == 'bullet':
build_port('bullet', 'libbullet.bc', ['-s', 'USE_BULLET=1'])
elif what == 'vorbis':
build_port('vorbis', 'libvorbis.bc', ['-s', 'USE_VORBIS=1'])
elif what == 'ogg':
build_port('ogg', 'libogg.bc', ['-s', 'USE_OGG=1'])
elif what == 'libpng':
def generate_object_file(data_files):
embed_files = [f for f in data_files if f.mode == 'embed']
assert embed_files
asm_file = shared.replace_suffix(options.obj_output, '.s')
used = set()
for f in embed_files:
f.c_symbol_name = '__em_file_data_%s' % to_c_symbol(f.dstpath, used)
with open(asm_file, 'w') as out:
out.write(
'# Emscripten embedded file data, generated by tools/file_packager.py\n'
)
for f in embed_files:
if DEBUG:
err('embedding %s at %s' % (f.srcpath, f.dstpath))
size = os.path.getsize(f.srcpath)
dstpath = to_asm_string(f.dstpath)
srcpath = to_unix_path(f.srcpath)
out.write(
dedent(f'''
.section .rodata.{f.c_symbol_name},"",@
# The name of file
{f.c_symbol_name}_name:
.asciz "{dstpath}"
.size {f.c_symbol_name}_name, {len(dstpath)+1}
# The size of the file followed by the content itself
{f.c_symbol_name}:
.incbin "{srcpath}"
.size {f.c_symbol_name}, {size}
'''))
out.write(
dedent('''
# A list of triples of:
# (file_name_ptr, file_data_size, file_data_ptr)
# The list in null terminate with a single 0
.globl __emscripten_embedded_file_data
.export_name __emscripten_embedded_file_data, __emscripten_embedded_file_data
.section .rodata.__emscripten_embedded_file_data,"",@
__emscripten_embedded_file_data:
.p2align 2
'''))
for f in embed_files:
# The `.dc.a` directive gives us a pointer (address) sized entry.
# See https://sourceware.org/binutils/docs/as/Dc.html
out.write(
dedent(f'''\
.dc.a {f.c_symbol_name}_name
.int32 {os.path.getsize(f.srcpath)}
.dc.a {f.c_symbol_name}
'''))
ptr_size = 4
elem_size = (2 * ptr_size) + 4
total_size = len(embed_files) * elem_size + 4
out.write(
dedent(f'''\
.dc.a 0
.size __emscripten_embedded_file_data, {total_size}
'''))
shared.check_call([
shared.LLVM_MC, '-filetype=obj', '-triple=' + shared.get_llvm_target(),
'-o', options.obj_output, asm_file
])
