diff options
| author | Richard Henderson <rth@twiddle.net> | 2013-08-14 15:29:18 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2014-03-14 11:00:10 -0700 |
| commit | 8678b71ce61a337109bca27b058a9027ff1c24ae (patch) | |
| tree | 675ff55b720ded8ddbacc5a586a4005fdb94d6e9 /tcg | |
| parent | 1fcc9ddfb3c42431c027eb490613b51491202daa (diff) | |
| download | qemu-8678b71ce61a337109bca27b058a9027ff1c24ae.zip | |
tcg-aarch64: Support div, rem
Clean up multiply at the same time.
For remainder, generic code will produce mul+sub,
whereas we can implement with msub.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Claudio Fontana <claudio.fontana@huawei.com>
Tested-by: Claudio Fontana <claudio.fontana@huawei.com>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/aarch64/tcg-target.c | 50 | ||||
| -rw-r--r-- | tcg/aarch64/tcg-target.h | 8 |
2 files changed, 45 insertions, 13 deletions
diff --git a/tcg/aarch64/tcg-target.c b/tcg/aarch64/tcg-target.c index 9c5082018a..23bbe9500c 100644 --- a/tcg/aarch64/tcg-target.c +++ b/tcg/aarch64/tcg-target.c @@ -313,6 +313,12 @@ typedef enum { I3508_RORV = 0x1ac02c00, I3508_SMULH = 0x9b407c00, I3508_UMULH = 0x9bc07c00, + I3508_UDIV = 0x1ac00800, + I3508_SDIV = 0x1ac00c00, + + /* Data-processing (3 source) instructions. */ + I3509_MADD = 0x1b000000, + I3509_MSUB = 0x1b008000, /* Logical shifted register instructions (without a shift). */ I3510_AND = 0x0a000000, @@ -467,6 +473,12 @@ static void tcg_out_insn_3506(TCGContext *s, AArch64Insn insn, TCGType ext, | tcg_cond_to_aarch64[c] << 12); } +static void tcg_out_insn_3509(TCGContext *s, AArch64Insn insn, TCGType ext, + TCGReg rd, TCGReg rn, TCGReg rm, TCGReg ra) +{ + tcg_out32(s, insn | ext << 31 | rm << 16 | ra << 10 | rn << 5 | rd); +} + static inline void tcg_out_ldst_9(TCGContext *s, enum aarch64_ldst_op_data op_data, @@ -595,14 +607,6 @@ static inline void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, arg, arg1, arg2); } -static inline void tcg_out_mul(TCGContext *s, TCGType ext, - TCGReg rd, TCGReg rn, TCGReg rm) -{ - /* Using MADD 0x1b000000 with Ra = wzr alias MUL 0x1b007c00 */ - unsigned int base = ext ? 0x9b007c00 : 0x1b007c00; - tcg_out32(s, base | rm << 16 | rn << 5 | rd); -} - static inline void tcg_out_bfm(TCGContext *s, TCGType ext, TCGReg rd, TCGReg rn, unsigned int a, unsigned int b) { @@ -1395,7 +1399,27 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, case INDEX_op_mul_i64: case INDEX_op_mul_i32: - tcg_out_mul(s, ext, a0, a1, a2); + tcg_out_insn(s, 3509, MADD, ext, a0, a1, a2, TCG_REG_XZR); + break; + + case INDEX_op_div_i64: + case INDEX_op_div_i32: + tcg_out_insn(s, 3508, SDIV, ext, a0, a1, a2); + break; + case INDEX_op_divu_i64: + case INDEX_op_divu_i32: + tcg_out_insn(s, 3508, UDIV, ext, a0, a1, a2); + break; + + case INDEX_op_rem_i64: + case INDEX_op_rem_i32: + tcg_out_insn(s, 3508, SDIV, ext, TCG_REG_TMP, a1, a2); + tcg_out_insn(s, 3509, MSUB, ext, a0, TCG_REG_TMP, a2, a1); + break; + case INDEX_op_remu_i64: + case INDEX_op_remu_i32: + tcg_out_insn(s, 3508, UDIV, ext, TCG_REG_TMP, a1, a2); + tcg_out_insn(s, 3509, MSUB, ext, a0, TCG_REG_TMP, a2, a1); break; case INDEX_op_shl_i64: @@ -1626,6 +1650,14 @@ static const TCGTargetOpDef aarch64_op_defs[] = { { INDEX_op_sub_i64, { "r", "r", "rA" } }, { INDEX_op_mul_i32, { "r", "r", "r" } }, { INDEX_op_mul_i64, { "r", "r", "r" } }, + { INDEX_op_div_i32, { "r", "r", "r" } }, + { INDEX_op_div_i64, { "r", "r", "r" } }, + { INDEX_op_divu_i32, { "r", "r", "r" } }, + { INDEX_op_divu_i64, { "r", "r", "r" } }, + { INDEX_op_rem_i32, { "r", "r", "r" } }, + { INDEX_op_rem_i64, { "r", "r", "r" } }, + { INDEX_op_remu_i32, { "r", "r", "r" } }, + { INDEX_op_remu_i64, { "r", "r", "r" } }, { INDEX_op_and_i32, { "r", "r", "rwL" } }, { INDEX_op_and_i64, { "r", "r", "rL" } }, { INDEX_op_or_i32, { "r", "r", "rwL" } }, diff --git a/tcg/aarch64/tcg-target.h b/tcg/aarch64/tcg-target.h index c81909503d..988983ed59 100644 --- a/tcg/aarch64/tcg-target.h +++ b/tcg/aarch64/tcg-target.h @@ -39,8 +39,8 @@ typedef enum { #define TCG_TARGET_CALL_STACK_OFFSET 0 /* optional instructions */ -#define TCG_TARGET_HAS_div_i32 0 -#define TCG_TARGET_HAS_rem_i32 0 +#define TCG_TARGET_HAS_div_i32 1 +#define TCG_TARGET_HAS_rem_i32 1 #define TCG_TARGET_HAS_ext8s_i32 1 #define TCG_TARGET_HAS_ext16s_i32 1 #define TCG_TARGET_HAS_ext8u_i32 1 @@ -64,8 +64,8 @@ typedef enum { #define TCG_TARGET_HAS_muluh_i32 0 #define TCG_TARGET_HAS_mulsh_i32 0 -#define TCG_TARGET_HAS_div_i64 0 -#define TCG_TARGET_HAS_rem_i64 0 +#define TCG_TARGET_HAS_div_i64 1 +#define TCG_TARGET_HAS_rem_i64 1 #define TCG_TARGET_HAS_ext8s_i64 1 #define TCG_TARGET_HAS_ext16s_i64 1 #define TCG_TARGET_HAS_ext32s_i64 1 |