* Claudiu Zissulescu <claz...@gmail.com> [2018-11-12 13:25:13 +0200]:
> Use PROFILE_HOOK to add mcount library calls in each toolchain.
>
> gcc/
> xxxx-xx-xx Claudiu Zissulescu <claz...@synopsys.com>
>
> * config/arc/arc.h (FUNCTION_PROFILER): Redefine to empty.
> * config/arc/elf.h (PROFILE_HOOK): Define.
> * config/arc/linux.h (PROFILE_HOOK): Likewise.
Looks good.
Thanks,
Andrew
> ---
> gcc/config/arc/arc.h | 12 +++---------
> gcc/config/arc/elf.h | 9 +++++++++
> gcc/config/arc/linux.h | 10 ++++++++++
> 3 files changed, 22 insertions(+), 9 deletions(-)
>
> diff --git a/gcc/config/arc/arc.h b/gcc/config/arc/arc.h
> index a0a84900917..f75c273691c 100644
> --- a/gcc/config/arc/arc.h
> +++ b/gcc/config/arc/arc.h
> @@ -775,15 +775,9 @@ extern int arc_initial_elimination_offset(int from, int
> to);
> #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
> (OFFSET) = arc_initial_elimination_offset ((FROM), (TO))
>
> -/* Output assembler code to FILE to increment profiler label # LABELNO
> - for profiling a function entry. */
> -#define FUNCTION_PROFILER(FILE, LABELNO) \
> - do { \
> - if (flag_pic) \
> - fprintf (FILE, "\tbl\t__mcount@plt\n"); \
> - else \
> - fprintf (FILE, "\tbl\t__mcount\n"); \
> - } while (0)
> +/* All the work done in PROFILE_HOOK, but still required. */
> +#undef FUNCTION_PROFILER
> +#define FUNCTION_PROFILER(STREAM, LABELNO) do { } while (0)
>
> #define NO_PROFILE_COUNTERS 1
>
> diff --git a/gcc/config/arc/elf.h b/gcc/config/arc/elf.h
> index 3472fd2e418..3aabcf8c9e6 100644
> --- a/gcc/config/arc/elf.h
> +++ b/gcc/config/arc/elf.h
> @@ -78,3 +78,12 @@ along with GCC; see the file COPYING3. If not see
> #undef LINK_GCC_C_SEQUENCE_SPEC
> #define LINK_GCC_C_SEQUENCE_SPEC \
> "--start-group %G %{!specs=*:%{!nolibc:-lc -lnosys}} --end-group"
> +
> +/* Emit rtl for profiling. Output assembler code to FILE
> + to call "_mcount" for profiling a function entry. */
> +#define PROFILE_HOOK(LABEL) \
> + { \
> + rtx fun; \
> + fun = gen_rtx_SYMBOL_REF (Pmode, "__mcount"); \
> + emit_library_call (fun, LCT_NORMAL, VOIDmode); \
> + }
> diff --git a/gcc/config/arc/linux.h b/gcc/config/arc/linux.h
> index 62ebe4de0fc..993f445d2a0 100644
> --- a/gcc/config/arc/linux.h
> +++ b/gcc/config/arc/linux.h
> @@ -123,3 +123,13 @@ along with GCC; see the file COPYING3. If not see
> : "=r" (_beg) \
> : "0" (_beg), "r" (_end), "r" (_xtr), "r" (_scno)); \
> }
> +
> +/* Emit rtl for profiling. Output assembler code to FILE
> + to call "_mcount" for profiling a function entry. */
> +#define PROFILE_HOOK(LABEL) \
> + { \
> + rtx fun, rt; \
> + rt = get_hard_reg_initial_val (Pmode, RETURN_ADDR_REGNUM); \
> + fun = gen_rtx_SYMBOL_REF (Pmode, "_mcount"); \
> + emit_library_call (fun, LCT_NORMAL, VOIDmode, rt, Pmode); \
> + }
> --
> 2.19.1
>
