diff options
Diffstat (limited to 'gcc/testsuite/gcc.target/sparc/sparc-ret-3.c')
| -rw-r--r-- | gcc/testsuite/gcc.target/sparc/sparc-ret-3.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/sparc/sparc-ret-3.c b/gcc/testsuite/gcc.target/sparc/sparc-ret-3.c new file mode 100644 index 0000000..7a151f8 --- /dev/null +++ b/gcc/testsuite/gcc.target/sparc/sparc-ret-3.c @@ -0,0 +1,53 @@ +/* PR target/80968 */ +/* { dg-do compile } */ +/* { dg-skip-if "no register windows" { *-*-* } { "-mflat" } { "" } } */ +/* { dg-require-effective-target ilp32 } */ +/* { dg-options "-mcpu=ultrasparc -O" } */ + +/* Make sure references to the stack frame do not slip into the delay slot + of a return instruction. */ + +struct crypto_shash { + unsigned int descsize; +}; +struct crypto_shash *tfm; + +struct shash_desc { + struct crypto_shash *tfm; + unsigned int flags; + + void *__ctx[] __attribute__((aligned(8))); +}; + +static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm) +{ + return tfm->descsize; +} + +static inline void *shash_desc_ctx(struct shash_desc *desc) +{ + return desc->__ctx; +} + +#define SHASH_DESC_ON_STACK(shash, ctx) \ + char __##shash##_desc[sizeof(struct shash_desc) + \ + crypto_shash_descsize(ctx)] __attribute__((aligned(8))); \ + struct shash_desc *shash = (struct shash_desc *)__##shash##_desc + +extern int crypto_shash_update(struct shash_desc *, const void *, unsigned int); + +unsigned int bug(unsigned int crc, const void *address, unsigned int length) +{ + SHASH_DESC_ON_STACK(shash, tfm); + unsigned int *ctx = (unsigned int *)shash_desc_ctx(shash); + int err; + + shash->tfm = tfm; + shash->flags = 0; + *ctx = crc; + + err = crypto_shash_update(shash, address, length); + + return *ctx; +} +/* { dg-final { scan-assembler "ld\[ \t\]*\\\[%i5\\+8\\\], %i0\n\[^\n\]*return\[ \t\]*%i7\\+8" } } */ |