mirror of https://github.com/google/oss-fuzz.git
69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
/* Copyright 2021 Google LLC
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/*
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* We convert as.c into a header file to make convenient for fuzzing.
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* We do this for several of the binutils applications when creating
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* the binutils fuzzers.
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*/
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#include <fuzz_as.h>
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int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
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int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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char filename[256];
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sprintf(filename, "/tmp/libfuzzer-%d.s", getpid());
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FILE *fp = fopen(filename, "wb");
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if (!fp) {
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return 0;
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}
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fwrite(data, size, 1, fp);
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fclose(fp);
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reg_section = NULL;
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const char *fakeArgv[3];
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fakeArgv[0] = "fuzz_objdump";
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fakeArgv[1] = filename; // Assemble our fake source file.
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fakeArgv[2] = NULL;
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out_file_name = "/tmp/tmp-out";
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// as initialition. This follows the flow of ordinary main function
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symbol_begin ();
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frag_init ();
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subsegs_begin ();
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read_begin ();
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input_scrub_begin ();
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expr_begin ();
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macro_init (flag_macro_alternate, flag_mri, 0, macro_expr);
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output_file_create (out_file_name);
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itbl_init ();
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dwarf2_init ();
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cond_finish_check (-1);
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dot_symbol_init ();
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// Main fuzzer target. Assemble our random data.
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perform_an_assembly_pass (2, (char**)fakeArgv);
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// Cleanup
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cond_finish_check (-1);
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dwarf2_finish ();
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cfi_finish ();
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input_scrub_end ();
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unlink(filename);
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return 0;
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}
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