mips: increase stack alignment in clone to match the ABI

In "mips: align stack in clone [BZ #28223]"
(commit 1f51cd9a860ee45eee8a56fb2ba925267a2a7bfe) I made a mistake: I
misbelieved one "word" was 2-byte and "doubleword" should be 4-byte.
But in MIPS ABI one "word" is defined 32-bit (4-byte), so "doubleword" is
8-byte [1], and "quadword" is 16-byte [2].

[1]: "System V Application Binary Interface: MIPS(R) RISC Processor
      Supplement, 3rd edition", page 3-31
[2]: "MIPSpro(TM) 64-Bit Porting and Transition Guide", page 23

diff --git a/sysdeps/unix/sysv/linux/mips/clone.S b/sysdeps/unix/sysv/linux/mips/clone.S
index 43a5ad3..fd71b5c 100644 (file)
--- a/sysdeps/unix/sysv/linux/mips/clone.S
+++ b/sysdeps/unix/sysv/linux/mips/clone.S
@@ -55,11 +55,11 @@ NESTED(__clone,4*SZREG,sp)
        .set            at
 #endif
 
-       /* Align stack to 4/8 bytes per the ABI.  */
+       /* Align stack to 8/16 bytes per the ABI.  */
 #if _MIPS_SIM == _ABIO32
-       li              t0,-4
-#else
        li              t0,-8
+#else
+       li              t0,-16
 #endif
        and             a1,a1,t0