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| author | Kito Cheng <kito.cheng@sifive.com> | 2020-07-22 14:50:40 +0800 |
|---|---|---|
| committer | Kito Cheng <kito.cheng@sifive.com> | 2020-07-23 14:57:31 +0800 |
| commit | 2ca1b6d009b194286c3ec91f9c51cc6b0a475458 (patch) | |
| tree | af63dcdcbc211febcb5323810b4a881e5a4f8a00 /gcc/asan.c | |
| parent | 5029d42c4014ce8c9771ba7b8280d5e7770b6dee (diff) | |
PR target/96260 - KASAN should work even back-end not porting anything.
- Most KASAN function don't need any porting anything in back-end
except asan stack protection.
- However kernel will given shadow offset when enable asan stack
protection, so eveything in KASAN can work if shadow offset is given.
- Verified with x86 and risc-v.
- Verified with RISC-V linux kernel.
gcc/ChangeLog:
PR target/96260
* asan.c (asan_shadow_offset_set_p): New.
* asan.h (asan_shadow_offset_set_p): Ditto.
* toplev.c (process_options): Allow -fsanitize=kernel-address
even TARGET_ASAN_SHADOW_OFFSET not implemented, only check when
asan stack protection is enabled.
gcc/testsuite/ChangeLog:
PR target/96260
* gcc.target/riscv/pr91441.c: Update warning message.
* gcc.target/riscv/pr96260.c: New.
Diffstat (limited to 'gcc/asan.c')
| -rw-r--r-- | gcc/asan.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/asan.c b/gcc/asan.c index 9c9aa4cae35..0b471afff64 100644 --- a/gcc/asan.c +++ b/gcc/asan.c @@ -344,6 +344,13 @@ asan_shadow_offset () return asan_shadow_offset_value; } +/* Returns Asan shadow offset has been set. */ +bool +asan_shadow_offset_set_p () +{ + return asan_shadow_offset_computed; +} + alias_set_type asan_shadow_set = -1; /* Pointer types to 1, 2 or 4 byte integers in shadow memory. A separate |