| Message ID | 20220517152946.187638-3-deller@gmx.de (mailing list archive) |
|---|---|
| State | Accepted, archived |
| Headers | show |
| Series | [1/4] parisc: Prevent ldil() to sign-extend into upper 32 bits | expand |
diff --git a/arch/parisc/include/asm/assembly.h b/arch/parisc/include/asm/assembly.h index be784b41048c..0f0d4a496fef 100644 --- a/arch/parisc/include/asm/assembly.h +++ b/arch/parisc/include/asm/assembly.h @@ -174,6 +174,16 @@ #endif .endm + /* The depw instruction leaves the most significant 32 bits of the + * target register in an undefined state on PA 2.0 systems. */ + .macro dep_safe i, p, len, t +#ifdef CONFIG_64BIT + depd \i, 32+(\p), \len, \t +#else + depw \i, \p, \len, \t +#endif + .endm + /* load 32-bit 'value' into 'reg' compensating for the ldil * sign-extension when running in wide mode. * WARNING!! neither 'value' nor 'reg' can be expressions
Signed-off-by: Helge Deller <deller@gmx.de> --- arch/parisc/include/asm/assembly.h | 10 ++++++++++ 1 file changed, 10 insertions(+) -- 2.35.3