#define _LINUX_MODULE_SYMBOL_H
/* This ignores the intensely annoying "mapping symbols" found in ELF files. */
-static inline int is_mapping_symbol(const char *str)
+static inline int is_mapping_symbol(const char *str, int is_riscv)
{
if (str[0] == '.' && str[1] == 'L')
return true;
if (str[0] == 'L' && str[1] == '0')
return true;
+ /*
+ * RISC-V defines various special symbols that start with "$". The
+ * mapping symbols, which exist to differentiate between incompatible
+ * instruction encodings when disassembling, show up all over the place
+ * and are generally not meant to be treated like other symbols. So
+ * just ignore any of the special symbols.
+ */
+ if (is_riscv)
+ return str[0] == '$';
+
return str[0] == '$' &&
(str[1] == 'a' || str[1] == 'd' || str[1] == 't' || str[1] == 'x')
&& (str[2] == '\0' || str[2] == '.');
* and inserted at a whim.
*/
if (*kallsyms_symbol_name(kallsyms, i) == '\0' ||
- is_mapping_symbol(kallsyms_symbol_name(kallsyms, i)))
+ is_mapping_symbol(kallsyms_symbol_name(kallsyms, i), IS_ENABLED(CONFIG_RISCV)))
continue;
if (thisval <= addr && thisval > bestval) {
if (!name || !strlen(name))
return 0;
- return !is_mapping_symbol(name);
+ return !is_mapping_symbol(name, elf->hdr->e_machine == EM_RISCV);
}
/* Look up the nearest symbol based on the section and the address */