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| author | Richard Henderson <rth@twiddle.net> | 2009-12-11 11:51:45 -0800 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2009-12-13 21:36:21 +0100 |
| commit | 14ab16342990d7400da5d889f3594bd498fa2e31 (patch) | |
| tree | 19e8bb6f1365bb469529971f2fa0d9d34ebf02e8 /target-alpha/translate.c | |
| parent | 248c42f3939368e4b799947bdd31a36ff949e11a (diff) | |
| download | qemu-14ab16342990d7400da5d889f3594bd498fa2e31.tar.gz qemu-14ab16342990d7400da5d889f3594bd498fa2e31.tar.bz2 qemu-14ab16342990d7400da5d889f3594bd498fa2e31.zip | |
target-alpha: Expand msk*l inline.
Similar in difficulty to ext*l, already expanded.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-alpha/translate.c')
| -rw-r--r-- | target-alpha/translate.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/target-alpha/translate.c b/target-alpha/translate.c index 5cb620347f..ebab95d65d 100644 --- a/target-alpha/translate.c +++ b/target-alpha/translate.c @@ -655,6 +655,32 @@ static inline void gen_ins_l(int ra, int rb, int rc, int islit, } } +/* MSKBL, MSKWL, MSKLL, MSKQL */ +static inline void gen_msk_l(int ra, int rb, int rc, int islit, + uint8_t lit, uint8_t byte_mask) +{ + if (unlikely(rc == 31)) + return; + else if (unlikely(ra == 31)) + tcg_gen_movi_i64(cpu_ir[rc], 0); + else if (islit) { + gen_zapnoti (cpu_ir[rc], cpu_ir[ra], ~(byte_mask << (lit & 7))); + } else { + TCGv shift = tcg_temp_new(); + TCGv mask = tcg_temp_new(); + + tcg_gen_andi_i64(shift, cpu_ir[rb], 7); + tcg_gen_shli_i64(shift, shift, 3); + tcg_gen_movi_i64(mask, zapnot_mask (byte_mask)); + tcg_gen_shl_i64(mask, mask, shift); + + tcg_gen_andc_i64(cpu_ir[rc], cpu_ir[ra], mask); + + tcg_temp_free(mask); + tcg_temp_free(shift); + } +} + /* Code to call arith3 helpers */ #define ARITH3(name) \ static inline void glue(gen_, name)(int ra, int rb, int rc, int islit,\ @@ -686,10 +712,6 @@ ARITH3(addlv) ARITH3(sublv) ARITH3(addqv) ARITH3(subqv) -ARITH3(mskbl) -ARITH3(mskwl) -ARITH3(mskll) -ARITH3(mskql) ARITH3(mskwh) ARITH3(inswh) ARITH3(msklh) @@ -1314,7 +1336,7 @@ static inline int translate_one(DisasContext *ctx, uint32_t insn) switch (fn7) { case 0x02: /* MSKBL */ - gen_mskbl(ra, rb, rc, islit, lit); + gen_msk_l(ra, rb, rc, islit, lit, 0x01); break; case 0x06: /* EXTBL */ @@ -1326,7 +1348,7 @@ static inline int translate_one(DisasContext *ctx, uint32_t insn) break; case 0x12: /* MSKWL */ - gen_mskwl(ra, rb, rc, islit, lit); + gen_msk_l(ra, rb, rc, islit, lit, 0x03); break; case 0x16: /* EXTWL */ @@ -1338,7 +1360,7 @@ static inline int translate_one(DisasContext *ctx, uint32_t insn) break; case 0x22: /* MSKLL */ - gen_mskll(ra, rb, rc, islit, lit); + gen_msk_l(ra, rb, rc, islit, lit, 0x0f); break; case 0x26: /* EXTLL */ @@ -1358,7 +1380,7 @@ static inline int translate_one(DisasContext *ctx, uint32_t insn) break; case 0x32: /* MSKQL */ - gen_mskql(ra, rb, rc, islit, lit); + gen_msk_l(ra, rb, rc, islit, lit, 0xff); break; case 0x34: /* SRL */ |