@@ -100,6 +100,11 @@ Instruction Macros
~~~~~~~~~~~~~~~~~~
This section covers ``SYM_FUNC_*`` and ``SYM_CODE_*`` enumerated above.
+``objtool`` requires that all code must be contained in an ELF symbol. Symbol
+names that have a ``.L`` prefix do not emit symbol table entries. ``.L``
+prefixed symbols can be used within a code region, but should be avoided for
+denoting a range of code via ``SYM_*_START/END`` annotations.
+
* ``SYM_FUNC_START`` and ``SYM_FUNC_START_LOCAL`` are supposed to be **the
most frequent markings**. They are used for functions with standard calling
conventions -- global and local. Like in C, they both align the functions to
@@ -31,7 +31,7 @@ SYM_FUNC_START_NOALIGN(\name)
.endif
call \func
- jmp .L_restore
+ jmp __thunk_restore
SYM_FUNC_END(\name)
_ASM_NOKPROBE(\name)
.endm
@@ -44,7 +44,7 @@ SYM_FUNC_END(\name)
#endif
#ifdef CONFIG_PREEMPTION
-SYM_CODE_START_LOCAL_NOALIGN(.L_restore)
+SYM_CODE_START_LOCAL_NOALIGN(__thunk_restore)
popq %r11
popq %r10
popq %r9
@@ -56,6 +56,6 @@ SYM_CODE_START_LOCAL_NOALIGN(.L_restore)
popq %rdi
popq %rbp
ret
- _ASM_NOKPROBE(.L_restore)
-SYM_CODE_END(.L_restore)
+ _ASM_NOKPROBE(__thunk_restore)
+SYM_CODE_END(__thunk_restore)
#endif
@@ -178,6 +178,11 @@
* Objtool generates debug info for both FUNC & CODE, but needs special
* annotations for each CODE's start (to describe the actual stack frame).
*
+ * Objtool requires that all code must be contained in an ELF symbol. Symbol
+ * names that have a .L prefix do not emit symbol table entries. .L
+ * prefixed symbols can be used within a code region, but should be avoided for
+ * denoting a range of code via ``SYM_*_START/END`` annotations.
+ *
* ALIAS -- does not generate debug info -- the aliased function will
*/