diff options
| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2018-07-16 14:36:21 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2018-07-16 14:36:21 +0000 |
| commit | 605090dc791ab2495f021908edc4dc03851e06a6 (patch) | |
| tree | 724d9d00c9dace40c1244e0aceab8613d42bb52b /gcc | |
| parent | 6902799c8d1470fd8a55754cc1caf0bb442472e9 (diff) | |
| download | gcc-605090dc791ab2495f021908edc4dc03851e06a6.zip gcc-605090dc791ab2495f021908edc4dc03851e06a6.tar.gz gcc-605090dc791ab2495f021908edc4dc03851e06a6.tar.bz2 | |
S/390: Implement -mrecord-mcount
This is the counterpart of the i386 feature introduced by
39a5a6a4: Add direct support for Linux kernel __fentry__ patching.
2018-07-16 Ilya Leoshkevich <iii@linux.ibm.com>
* config/s390/s390.c (s390_function_profiler): Generate
__mcount_loc section.
* config/s390/s390.opt: Add the new option.
2018-07-16 Ilya Leoshkevich <iii@linux.ibm.com>
* testsuite/gcc.target/s390/mrecord-mcount.c: New testcase.
From-SVN: r262733
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/s390/s390.c | 10 | ||||
| -rw-r--r-- | gcc/config/s390/s390.opt | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/s390/mrecord-mcount.c | 10 |
5 files changed, 34 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index de108a5..808a237 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2018-07-16 Ilya Leoshkevich <iii@linux.ibm.com> + * gcc/config/s390/s390.c (s390_function_profiler): Generate + __mcount_loc section. + * gcc/config/s390/s390.opt: Add the new option. + +2018-07-16 Ilya Leoshkevich <iii@linux.ibm.com> + * common.opt: Add the new warning. * config/s390/s390.c (s390_function_profiler): Emit "brasl %r0,__fentry__" when -mfentry is specified. diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c index 3a406b9..600501c 100644 --- a/gcc/config/s390/s390.c +++ b/gcc/config/s390/s390.c @@ -13151,6 +13151,9 @@ s390_function_profiler (FILE *file, int labelno) op[4] = gen_rtx_CONST (Pmode, op[4]); } + if (flag_record_mcount) + fprintf (file, "1:\n"); + if (flag_fentry) { if (cfun->static_chain_decl) @@ -13204,6 +13207,13 @@ s390_function_profiler (FILE *file, int labelno) output_asm_insn ("basr\t%0,%0", op); output_asm_insn ("l\t%0,%1", op); } + + if (flag_record_mcount) + { + fprintf (file, "\t.section __mcount_loc, \"a\",@progbits\n"); + fprintf (file, "\t.%s 1b\n", TARGET_64BIT ? "quad" : "long"); + fprintf (file, "\t.previous\n"); + } } /* Encode symbol attributes (local vs. global, tls model) of a SYMBOL_REF diff --git a/gcc/config/s390/s390.opt b/gcc/config/s390/s390.opt index 59e97d0..9a3ed65 100644 --- a/gcc/config/s390/s390.opt +++ b/gcc/config/s390/s390.opt @@ -298,3 +298,7 @@ mfentry Target Report Var(flag_fentry) Emit profiling counter call at function entry before prologue. The compiled code will require a 64-bit CPU and glibc 2.29 or newer to run. + +mrecord-mcount +Target Report Var(flag_record_mcount) +Generate __mcount_loc section with all _mcount and __fentry__ calls. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index e0503f2..07c87a6 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,9 @@ 2018-07-16 Ilya Leoshkevich <iii@linux.ibm.com> + * testsuite/gcc.target/s390/mrecord-mcount.c: New testcase. + +2018-07-16 Ilya Leoshkevich <iii@linux.ibm.com> + * gcc.target/s390/mfentry-m64.c: New testcase. 2018-07-16 Hristian Kirtchev <kirtchev@adacore.com> diff --git a/gcc/testsuite/gcc.target/s390/mrecord-mcount.c b/gcc/testsuite/gcc.target/s390/mrecord-mcount.c new file mode 100644 index 0000000..d8a23ff --- /dev/null +++ b/gcc/testsuite/gcc.target/s390/mrecord-mcount.c @@ -0,0 +1,10 @@ +/* { dg-do compile } */ +/* { dg-options "-pg -mrecord-mcount" } */ + +void +profileme (void) +{ + /* { dg-final { scan-assembler ".section __mcount_loc, \"a\",@progbits" } } */ + /* { dg-final { scan-assembler ".quad 1b" } } */ + /* { dg-final { scan-assembler ".previous" } } */ +} |