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tcg: add bswap16_i64 and bswap32_i64 TCG ops 

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6832 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-03-13 09:35:12 +00:00
parent dfa1a3f1c4
commit 9a5c57fdc1
2 changed files with 64 additions and 0 deletions
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58
tcg/tcg-op.h
View File

@ -1297,6 +1297,20 @@ static inline void tcg_gen_ext_i32_i64(TCGv_i64 ret, TCGv_i32 arg)
tcg_gen_sari_i32(TCGV_HIGH(ret), TCGV_LOW(ret), 31);
}
/* Note: we assume the six high bytes are set to zero */
static inline void tcg_gen_bswap16_i64(TCGv_i64 ret, TCGv_i64 arg)
{
tcg_gen_mov_i32(TCGV_HIGH(ret), TCGV_HIGH(arg));
tcg_gen_bswap16_i32(TCGV_LOW(ret), TCGV_LOW(arg));
}
/* Note: we assume the four high bytes are set to zero */
static inline void tcg_gen_bswap32_i64(TCGv_i64 ret, TCGv_i64 arg)
{
tcg_gen_mov_i32(TCGV_HIGH(ret), TCGV_HIGH(arg));
tcg_gen_bswap32_i32(TCGV_LOW(ret), TCGV_LOW(arg));
}
static inline void tcg_gen_bswap64_i64(TCGv_i64 ret, TCGv_i64 arg)
{
TCGv_i32 t0, t1;
@ -1378,6 +1392,50 @@ static inline void tcg_gen_ext_i32_i64(TCGv_i64 ret, TCGv_i32 arg)
tcg_gen_ext32s_i64(ret, MAKE_TCGV_I64(GET_TCGV_I32(arg)));
}
/* Note: we assume the six high bytes are set to zero */
static inline void tcg_gen_bswap16_i64(TCGv_i64 ret, TCGv_i64 arg)
{
#ifdef TCG_TARGET_HAS_bswap16_i64
tcg_gen_op2_i64(INDEX_op_bswap16_i64, ret, arg);
#else
TCGv_i64 t0 = tcg_temp_new_i64();
tcg_gen_ext8u_i64(t0, arg);
tcg_gen_shli_i64(t0, t0, 8);
tcg_gen_shri_i64(ret, arg, 8);
tcg_gen_or_i64(ret, ret, t0);
tcg_temp_free_i64(t0);
#endif
}
/* Note: we assume the four high bytes are set to zero */
static inline void tcg_gen_bswap32_i64(TCGv_i64 ret, TCGv_i64 arg)
{
#ifdef TCG_TARGET_HAS_bswap32_i64
tcg_gen_op2_i64(INDEX_op_bswap32_i64, ret, arg);
#else
TCGv_i64 t0, t1;
t0 = tcg_temp_new_i64();
t1 = tcg_temp_new_i64();
tcg_gen_shli_i64(t0, arg, 24);
tcg_gen_ext32u_i64(t0, t0);
tcg_gen_andi_i64(t1, arg, 0x0000ff00);
tcg_gen_shli_i64(t1, t1, 8);
tcg_gen_or_i64(t0, t0, t1);
tcg_gen_shri_i64(t1, arg, 8);
tcg_gen_andi_i64(t1, t1, 0x0000ff00);
tcg_gen_or_i64(t0, t0, t1);
tcg_gen_shri_i64(t1, arg, 24);
tcg_gen_or_i64(ret, t0, t1);
tcg_temp_free_i64(t0);
tcg_temp_free_i64(t1);
#endif
}
static inline void tcg_gen_bswap64_i64(TCGv_i64 ret, TCGv_i64 arg)
{
#ifdef TCG_TARGET_HAS_bswap64_i64

6
tcg/tcg-opc.h
View File

@ -152,6 +152,12 @@ DEF2(ext16s_i64, 1, 1, 0, 0)
#ifdef TCG_TARGET_HAS_ext32s_i64
DEF2(ext32s_i64, 1, 1, 0, 0)
#endif
#ifdef TCG_TARGET_HAS_bswap16_i64
DEF2(bswap16_i64, 1, 1, 0, 0)
#endif
#ifdef TCG_TARGET_HAS_bswap32_i64
DEF2(bswap32_i64, 1, 1, 0, 0)
#endif
#ifdef TCG_TARGET_HAS_bswap64_i64
DEF2(bswap64_i64, 1, 1, 0, 0)
#endif