diff options
| author | Richard Henderson <rth@twiddle.net> | 2013-01-30 21:41:54 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2013-04-15 20:09:51 +0200 |
| commit | 68aebd45b1bc13828029e60d12147222ddef3259 (patch) | |
| tree | 81ff025c692d57f4a8bdaf9c18030057dd500897 /tcg/ppc64 | |
| parent | 5d221582009d942de77a538d21b09c9120929dc5 (diff) | |
| download | qemu-68aebd45b1bc13828029e60d12147222ddef3259.tar.gz | |
tcg-ppc64: Implement bswap64
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg/ppc64')
| -rw-r--r-- | tcg/ppc64/tcg-target.c | 35 | ||||
| -rw-r--r-- | tcg/ppc64/tcg-target.h | 2 |
2 files changed, 36 insertions, 1 deletions
diff --git a/tcg/ppc64/tcg-target.c b/tcg/ppc64/tcg-target.c index 1c6be96dbe..ea3209df4d 100644 --- a/tcg/ppc64/tcg-target.c +++ b/tcg/ppc64/tcg-target.c @@ -1714,6 +1714,40 @@ static void tcg_out_op (TCGContext *s, TCGOpcode opc, const TCGArg *args, } break; + case INDEX_op_bswap64_i64: + a0 = args[0], a1 = args[1], a2 = 0; + if (a0 == a1) { + a0 = 0; + a2 = a1; + } + + /* a1 = # abcd efgh */ + /* a0 = rl32(a1, 8) # 0000 fghe */ + tcg_out_rlw(s, RLWINM, a0, a1, 8, 0, 31); + /* a0 = dep(a0, rl32(a1, 24), 0xff000000) # 0000 hghe */ + tcg_out_rlw(s, RLWIMI, a0, a1, 24, 0, 7); + /* a0 = dep(a0, rl32(a1, 24), 0x0000ff00) # 0000 hgfe */ + tcg_out_rlw(s, RLWIMI, a0, a1, 24, 16, 23); + + /* a0 = rl64(a0, 32) # hgfe 0000 */ + /* a2 = rl64(a1, 32) # efgh abcd */ + tcg_out_rld(s, RLDICL, a0, a0, 32, 0); + tcg_out_rld(s, RLDICL, a2, a1, 32, 0); + + /* a0 = dep(a0, rl32(a2, 8), 0xffffffff) # hgfe bcda */ + tcg_out_rlw(s, RLWIMI, a0, a2, 8, 0, 31); + /* a0 = dep(a0, rl32(a2, 24), 0xff000000) # hgfe dcda */ + tcg_out_rlw(s, RLWIMI, a0, a2, 24, 0, 7); + /* a0 = dep(a0, rl32(a2, 24), 0x0000ff00) # hgfe dcba */ + tcg_out_rlw(s, RLWIMI, a0, a2, 24, 16, 23); + + if (a0 == 0) { + tcg_out_mov(s, TCG_TYPE_I64, args[0], a0); + /* Revert the source rotate that we performed above. */ + tcg_out_rld(s, RLDICL, a1, a1, 32, 0); + } + break; + default: tcg_dump_ops (s); tcg_abort (); @@ -1823,6 +1857,7 @@ static const TCGTargetOpDef ppc_op_defs[] = { { INDEX_op_bswap16_i64, { "r", "r" } }, { INDEX_op_bswap32_i32, { "r", "r" } }, { INDEX_op_bswap32_i64, { "r", "r" } }, + { INDEX_op_bswap64_i64, { "r", "r" } }, { -1 }, }; diff --git a/tcg/ppc64/tcg-target.h b/tcg/ppc64/tcg-target.h index 7cd1e98e3a..76001e82d8 100644 --- a/tcg/ppc64/tcg-target.h +++ b/tcg/ppc64/tcg-target.h @@ -102,7 +102,7 @@ typedef enum { #define TCG_TARGET_HAS_ext32s_i64 1 #define TCG_TARGET_HAS_bswap16_i64 1 #define TCG_TARGET_HAS_bswap32_i64 1 -#define TCG_TARGET_HAS_bswap64_i64 0 +#define TCG_TARGET_HAS_bswap64_i64 1 #define TCG_TARGET_HAS_not_i64 1 #define TCG_TARGET_HAS_neg_i64 1 #define TCG_TARGET_HAS_andc_i64 0 |