Commit 4387345a authored by Peter Maydell's avatar Peter Maydell Committed by Richard Henderson
Browse files

tcg: Avoid stores to unaligned addresses 



Avoid stores to unaligned addresses in TCG code generation, by using the
usual memcpy() approach. (Using bswap.h would drag a lot of QEMU baggage
into TCG, so it's simpler just to do direct memcpy() here.)

Reviewed-by: default avatarAlex Bennée <alex.bennee@linaro.org>
Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: default avatarRichard Henderson <rth@twiddle.net>
parent 86360ad7

tcg/tcg.c

+3 −3
Original line number Diff line number Diff line
@@ -125,21 +125,21 @@ static inline void tcg_out8(TCGContext *s, uint8_t v) 
static inline void tcg_out16(TCGContext *s, uint16_t v)

{

    uint8_t *p = s->code_ptr;

    *(uint16_t *)p = v;

    memcpy(p, &v, sizeof(v));

    s->code_ptr = p + 2;

}



static inline void tcg_out32(TCGContext *s, uint32_t v)

{

    uint8_t *p = s->code_ptr;

    *(uint32_t *)p = v;

    memcpy(p, &v, sizeof(v));

    s->code_ptr = p + 4;

}



static inline void tcg_out64(TCGContext *s, uint64_t v)

{

    uint8_t *p = s->code_ptr;

    *(uint64_t *)p = v;

    memcpy(p, &v, sizeof(v));

    s->code_ptr = p + 8;

}