From: Chen Gang <cheng...@emindsoft.com.cn> r10 may also be as parameter stack pointer for the nested function, so need save it before call mcount.
2016-06-03 Chen Gang <gang.chen.5...@gmail.com> gcc/ PR target/71331 * config/tilegx/tilegx.c (tilegx_function_profiler): Save r10 to stack before call mcount. --- gcc/config/tilegx/tilegx.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/gcc/config/tilegx/tilegx.c b/gcc/config/tilegx/tilegx.c index 06c832c..bc41105 100644 --- a/gcc/config/tilegx/tilegx.c +++ b/gcc/config/tilegx/tilegx.c @@ -5510,18 +5510,32 @@ tilegx_function_profiler (FILE *file, int labelno ATTRIBUTE_UNUSED) if (flag_pic) { fprintf (file, + "\t{\n" + "\taddi\tsp, sp, -8\n" + "\tst\tsp, r10\n" + "\t}\n" "\t{\n" "\tmove\tr10, lr\n" "\tjal\tplt(%s)\n" - "\t}\n", MCOUNT_NAME); + "\t}\n" + "\taddi\tsp, sp, 8\n" + "\tld\tr10, sp\n", + MCOUNT_NAME); } else { fprintf (file, + "\t{\n" + "\taddi\tsp, sp, -8\n" + "\tst\tsp, r10\n" + "\t}\n" "\t{\n" "\tmove\tr10, lr\n" "\tjal\t%s\n" - "\t}\n", MCOUNT_NAME); + "\t}\n" + "\taddi\tsp, sp, 8\n" + "\tld\tr10, sp\n", + MCOUNT_NAME); } tilegx_in_bundle = false; -- 1.9.3