Commit 13aaef67 authored by Richard Henderson's avatar Richard Henderson
Browse files

tcg: Increase minimum alignment from tcg_malloc to 8 



For a 64-bit ILP32 host, aligning to sizeof(long) is not enough.
Guess the minimum for any host is 8, as that covers uint64_t.
Qemu doesn't use a host long double or host vectors, except in
extremely limited circumstances.

Fixes a bus error for a sparc v8plus host.

Signed-off-by: default avatarRichard Henderson <rth@twiddle.net>
parent de4e05d1

tcg/tcg.h

+4 −1
Original line number Diff line number Diff line
@@ -762,7 +762,10 @@ static inline void *tcg_malloc(int size) 
{

    TCGContext *s = &tcg_ctx;

    uint8_t *ptr, *ptr_end;

    size = (size + sizeof(long) - 1) & ~(sizeof(long) - 1);



    /* ??? This is a weak placeholder for minimum malloc alignment.  */

    size = QEMU_ALIGN_UP(size, 8);



    ptr = s->pool_cur;

    ptr_end = ptr + size;

    if (unlikely(ptr_end > s->pool_end)) {