x86/strace: handle symbol table

If passed by the boot loader, the stack tracing module can use the symbol
table to resolve addresses when forging the call trace.

1 files changed, 61 insertions, 0 deletions

diff --git a/arch/x86/machine/elf.h b/arch/x86/machine/elf.h
new file mode 100644
index 0000000..e0ea260
--- /dev/null
+++ b/arch/x86/machine/elf.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2013 Richard Braun.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _X86_ELF_H
+#define _X86_ELF_H
+
+#define ELF_SHT_SYMTAB  2
+#define ELF_SHT_STRTAB  3
+
+struct elf_shdr {
+    unsigned int name;
+    unsigned int type;
+    unsigned int flags;
+    unsigned long addr;
+    unsigned long offset;
+    unsigned int size;
+    unsigned int link;
+    unsigned int info;
+    unsigned int addralign;
+    unsigned int entsize;
+};
+
+#ifdef __LP64__
+
+struct elf_sym {
+    unsigned int name;
+    unsigned char info;
+    unsigned char other;
+    unsigned short shndx;
+    unsigned long value;
+    unsigned long size;
+};
+
+#else /* __LP64__ */
+
+struct elf_sym {
+    unsigned int name;
+    unsigned long value;
+    unsigned long size;
+    unsigned char info;
+    unsigned char other;
+    unsigned short shndx;
+};
+
+#endif /* __LP64__ */
+
+#endif /* _X86_ELF_H */