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| author | H.J. Lu <hjl.tools@gmail.com> | 2017-10-24 05:24:58 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2017-12-08 05:01:04 -0800 |
| commit | 7a2bea21f2854f1a7ad44c90fbb687f70c039144 (patch) | |
| tree | 14e1d6368cc4e2c6d2f87ae5b8a0cdcd658713e3 /gcc/testsuite/gcc.target/i386/pr81780-1.c | |
| parent | 6dbe66991c8e91806e5e666b400bfce918f618a3 (diff) | |
| download | gcc-hjl/pr81780.tar.gz | |
i386: Avoid PLT when shadow stack is enabledhjl/pr81780
PLT should be avoided with shadow stack in 32-bit mode if more than 2
parameters are passed in registers since only 2 parameters can be passed
in registers for external function calls via PLT with shadow stack
enabled.
gcc/
PR target/81780
* config/i386/i386.c (ix86_noplt_attribute_p): New function.
(ix86_expand_call): Use it.
(ix86_nopic_noplt_attribute_p): Likewise.
gcc/testsuite/
PR target/81780
* gcc.target/i386/pr81780-1.c: New test.
* gcc.target/i386/pr81780-2.c: Likewise.
* gcc.target/i386/pr81780-3.c: Likewise.
* gcc.target/i386/pr81780-4.c: Likewise.
Diffstat (limited to 'gcc/testsuite/gcc.target/i386/pr81780-1.c')
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr81780-1.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/pr81780-1.c b/gcc/testsuite/gcc.target/i386/pr81780-1.c new file mode 100644 index 00000000000..f5a28020782 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr81780-1.c @@ -0,0 +1,14 @@ +/* { dg-do compile { target { *-*-linux* && ia32 } } } */ +/* { dg-require-effective-target got32x_reloc } */ +/* { dg-options "-fcf-protection -mcet -O2 -fno-pic -fplt" } */ + +extern void bar (int) __attribute__ ((regparm (3))); + +int +foo (int i) +{ + bar (i); + return 0; +} + +/* { dg-final { scan-assembler "call\[ \t\]*.bar@GOT" } } */ |