diff options
| author | Jerome Forissier <jerome@forissier.org> | 2021-01-14 15:38:52 +0100 |
|---|---|---|
| committer | Jérôme Forissier <jerome@forissier.org> | 2021-01-15 13:03:20 +0100 |
| commit | ccb9ae9018f72fce467d799572833111c8d323db (patch) | |
| tree | 0ab6fc3c2314b3c6d339dc524aadb3ba7d9aaaf3 | |
| parent | b6ca39d50b42896e12e359d156fbccd274031561 (diff) | |
ta: link.mk: export trace_ext_prefix and trace_level
Global data defined in user_ta_header.c need to be made visible to
shared libraries because they may be referenced by them. For example,
trace_level is ultimately referenced by the trace macros (IMSG() and
similar). Therefore, when IMSG() is called in a shared library, the
dynamic loader (ldelf) needs to locate the trace_level symbol in the
TA. But since a TA is a "main executable" and not a shared library,
the linker by default will not add all global symbols to the dynamic
symbol table (.dynsym section). Instead those symbols are put in the
static symbol table (.symtab) which is typically not used at run time
and discarded when executables are stripped. In any case, ldelf only
uses the dynamic symbol table.
Add trace_ext_prefix and trace_level to the list of exported symbols to
fix the IMSG() issue.
Link: https://github.com/OP-TEE/optee_client/issues/242#issuecomment-755378055
Signed-off-by: Jerome Forissier <jerome@forissier.org>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
| -rw-r--r-- | ta/arch/arm/link.mk | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/ta/arch/arm/link.mk b/ta/arch/arm/link.mk index 3025acb1..cca6e6f4 100644 --- a/ta/arch/arm/link.mk +++ b/ta/arch/arm/link.mk @@ -42,6 +42,8 @@ $(link-out-dir$(sm))/dyn_list: ifeq ($(CFG_FTRACE_SUPPORT),y) $(q)echo "__ftrace_info;" >>$@ endif + $(q)echo "trace_ext_prefix;" >>$@ + $(q)echo "trace_level;" >>$@ $(q)echo "};" >>$@ link-ldflags += --dynamic-list $(link-out-dir$(sm))/dyn_list dynlistdep = $(link-out-dir$(sm))/dyn_list |