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src/jdk.hotspot.agent/linux/native/libsaproc/salibelf.c
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rev 58378 : 8234624: jstack mixed mode should refer DWARF
@@ -1,7 +1,7 @@
/*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
@@ -122,5 +122,34 @@
quit:
if (phbuf) free(phbuf);
return baseaddr;
}
+
+struct elf_section *find_section_by_name(char *name,
+ int fd,
+ ELF_EHDR *ehdr,
+ struct elf_section *scn_cache) {
+ char *strtab;
+ int cnt;
+ int strtab_size;
+
+ // Section cache have to already contain data for e_shstrndx section.
+ // If it's not true - elf file is broken, so just bail out
+ if (scn_cache[ehdr->e_shstrndx].c_data == NULL) {
+ return NULL;
+ }
+
+ strtab = scn_cache[ehdr->e_shstrndx].c_data;
+ strtab_size = scn_cache[ehdr->e_shstrndx].c_shdr->sh_size;
+
+ for (cnt = 0; cnt < ehdr->e_shnum; ++cnt) {
+ if (scn_cache[cnt].c_shdr->sh_name < strtab_size) {
+ if (strcmp(scn_cache[cnt].c_shdr->sh_name + strtab, name) == 0) {
+ scn_cache[cnt].c_data = read_section_data(fd, ehdr, scn_cache[cnt].c_shdr);
+ return &scn_cache[cnt];
+ }
+ }
+ }
+
+ return NULL;
+}
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