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| author | Richard Henderson <rth@twiddle.net> | 2013-02-19 23:51:54 -0800 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2013-02-23 17:25:28 +0000 |
| commit | 3c51a98507f9ff64fc2a3841c0e5b8a0c9e3c2b7 (patch) | |
| tree | e2e3ff1a983dea22f30d54f8bda512d839d0c4e1 /tcg | |
| parent | 4d3203fd0b5d17e39f631f2534e7cbb37d04ce3f (diff) | |
| download | qemu-3c51a98507f9ff64fc2a3841c0e5b8a0c9e3c2b7.zip qemu-3c51a98507f9ff64fc2a3841c0e5b8a0c9e3c2b7.tar.gz qemu-3c51a98507f9ff64fc2a3841c0e5b8a0c9e3c2b7.tar.bz2 | |
tcg: Implement a 64-bit to 32-bit extraction helper
We're going to have use for this shortly in implementing other helpers.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/tcg-op.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h index 91c9d80..4ded249 100644 --- a/tcg/tcg-op.h +++ b/tcg/tcg-op.h @@ -2246,6 +2246,26 @@ static inline void tcg_gen_concat32_i64(TCGv_i64 dest, TCGv_i64 low, tcg_gen_deposit_i64(dest, low, high, 32, 32); } +static inline void tcg_gen_extr_i64_i32(TCGv_i32 lo, TCGv_i32 hi, TCGv_i64 arg) +{ +#if TCG_TARGET_REG_BITS == 32 + tcg_gen_mov_i32(lo, TCGV_LOW(arg)); + tcg_gen_mov_i32(hi, TCGV_HIGH(arg)); +#else + TCGv_i64 t0 = tcg_temp_new_i64(); + tcg_gen_trunc_i64_i32(lo, arg); + tcg_gen_shri_i64(t0, arg, 32); + tcg_gen_trunc_i64_i32(hi, t0); + tcg_temp_free_i64(t0); +#endif +} + +static inline void tcg_gen_extr32_i64(TCGv_i64 lo, TCGv_i64 hi, TCGv_i64 arg) +{ + tcg_gen_ext32u_i64(lo, arg); + tcg_gen_shri_i64(hi, arg, 32); +} + static inline void tcg_gen_movcond_i32(TCGCond cond, TCGv_i32 ret, TCGv_i32 c1, TCGv_i32 c2, TCGv_i32 v1, TCGv_i32 v2) @@ -2625,6 +2645,7 @@ static inline void tcg_gen_qemu_st64(TCGv_i64 arg, TCGv addr, int mem_index) #define tcg_gen_bswap32_tl tcg_gen_bswap32_i64 #define tcg_gen_bswap64_tl tcg_gen_bswap64_i64 #define tcg_gen_concat_tl_i64 tcg_gen_concat32_i64 +#define tcg_gen_extr_i64_tl tcg_gen_extr32_i64 #define tcg_gen_andc_tl tcg_gen_andc_i64 #define tcg_gen_eqv_tl tcg_gen_eqv_i64 #define tcg_gen_nand_tl tcg_gen_nand_i64 @@ -2697,6 +2718,7 @@ static inline void tcg_gen_qemu_st64(TCGv_i64 arg, TCGv addr, int mem_index) #define tcg_gen_bswap16_tl tcg_gen_bswap16_i32 #define tcg_gen_bswap32_tl tcg_gen_bswap32_i32 #define tcg_gen_concat_tl_i64 tcg_gen_concat_i32_i64 +#define tcg_gen_extr_tl_i64 tcg_gen_extr_i32_i64 #define tcg_gen_andc_tl tcg_gen_andc_i32 #define tcg_gen_eqv_tl tcg_gen_eqv_i32 #define tcg_gen_nand_tl tcg_gen_nand_i32 |