openkylin
/
qemu
mirror of https://gitee.com/openkylin/qemu.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

tcg/x86_64: add bswap16_i{32,64} and bswap32_i64 ops 

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

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6838 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2009-03-13 09:35:55 +00:00
parent 5d40cd6302
commit 86dbdd4012
2 changed files with 13 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
tcg/x86_64/tcg-target.c
View File

@ -1094,7 +1094,14 @@ static inline void tcg_out_op(TCGContext *s, int opc, const TCGArg *args,
args[3], P_REXW);
break;
case INDEX_op_bswap16_i32:
case INDEX_op_bswap16_i64:
tcg_out8(s, 0x66);
tcg_out_modrm(s, 0xc1, SHIFT_ROL, args[0]);
tcg_out8(s, 8);
break;
case INDEX_op_bswap32_i32:
case INDEX_op_bswap32_i64:
tcg_out_opc(s, (0xc8 + (args[0] & 7)) | P_EXT, 0, args[0], 0);
break;
case INDEX_op_bswap64_i64:
@ -1287,7 +1294,10 @@ static const TCGTargetOpDef x86_64_op_defs[] = {
{ INDEX_op_brcond_i64, { "r", "re" } },
{ INDEX_op_bswap16_i32, { "r", "0" } },
{ INDEX_op_bswap16_i64, { "r", "0" } },
{ INDEX_op_bswap32_i32, { "r", "0" } },
{ INDEX_op_bswap32_i64, { "r", "0" } },
{ INDEX_op_bswap64_i64, { "r", "0" } },
{ INDEX_op_neg_i32, { "r", "0" } },

3
tcg/x86_64/tcg-target.h
View File

@ -56,7 +56,10 @@ enum {
#define TCG_TARGET_CALL_STACK_OFFSET 0
/* optional instructions */
#define TCG_TARGET_HAS_bswap16_i32
#define TCG_TARGET_HAS_bswap16_i64
#define TCG_TARGET_HAS_bswap32_i32
#define TCG_TARGET_HAS_bswap32_i64
#define TCG_TARGET_HAS_bswap64_i64
#define TCG_TARGET_HAS_neg_i32
#define TCG_TARGET_HAS_neg_i64