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| author | Richard Henderson <rth@twiddle.net> | 2010-05-21 08:30:23 -0700 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2010-05-21 16:20:22 +0000 |
| commit | a369a702a13629ec58ed483eb4a259f5b67579d7 (patch) | |
| tree | 98b236e60479a2d849cc679071bda0e85b27be36 /tcg | |
| parent | 6817c35598c2f58c53a9b5b7b5d6bd078a513a83 (diff) | |
| download | qemu-a369a702a13629ec58ed483eb4a259f5b67579d7.tar.gz qemu-a369a702a13629ec58ed483eb4a259f5b67579d7.tar.bz2 qemu-a369a702a13629ec58ed483eb4a259f5b67579d7.zip | |
tcg-i386: Tidy immediate arithmetic operations.
Define OPC_ARITH_EvI[bz]; use throughout. Use tcg_out_ext8u
directly in setcond. Use tgen_arithi in qemu_ld/st.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/i386/tcg-target.c | 26 |
1 files changed, 10 insertions, 16 deletions
diff --git a/tcg/i386/tcg-target.c b/tcg/i386/tcg-target.c index 949e974e65..5e8c58b8c8 100644 --- a/tcg/i386/tcg-target.c +++ b/tcg/i386/tcg-target.c @@ -158,6 +158,8 @@ static inline int tcg_target_const_match(tcg_target_long val, #define P_EXT 0x100 /* 0x0f opcode prefix */ +#define OPC_ARITH_EvIz (0x81) +#define OPC_ARITH_EvIb (0x83) #define OPC_BSWAP (0xc8 | P_EXT) #define OPC_JCC_long (0x80 | P_EXT) /* ... plus condition code */ #define OPC_JCC_short (0x70) /* ... plus condition code */ @@ -360,14 +362,14 @@ static inline void tgen_arithi(TCGContext *s, int c, int r0, int32_t val, int cf /* dec */ tcg_out_opc(s, 0x48 + r0); } else if (val == (int8_t)val) { - tcg_out_modrm(s, 0x83, c, r0); + tcg_out_modrm(s, OPC_ARITH_EvIb, c, r0); tcg_out8(s, val); } else if (c == ARITH_AND && val == 0xffu && r0 < 4) { tcg_out_ext8u(s, r0, r0); } else if (c == ARITH_AND && val == 0xffffu) { tcg_out_ext16u(s, r0, r0); } else { - tcg_out_modrm(s, 0x81, c, r0); + tcg_out_modrm(s, OPC_ARITH_EvIz, c, r0); tcg_out32(s, val); } } @@ -536,7 +538,7 @@ static void tcg_out_setcond(TCGContext *s, TCGCond cond, TCGArg dest, tcg_out_cmp(s, arg1, arg2, const_arg2); /* setcc */ tcg_out_modrm(s, 0x90 | tcg_cond_to_jcc[cond] | P_EXT, 0, dest); - tgen_arithi(s, ARITH_AND, dest, 0xff, 0); + tcg_out_ext8u(s, dest, dest); } static void tcg_out_setcond2(TCGContext *s, const TCGArg *args, @@ -638,16 +640,12 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, #if defined(CONFIG_SOFTMMU) tcg_out_mov(s, r1, addr_reg); - tcg_out_mov(s, r0, addr_reg); - + tcg_out_shifti(s, SHIFT_SHR, r1, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); - tcg_out_modrm(s, 0x81, 4, r0); /* andl $x, r0 */ - tcg_out32(s, TARGET_PAGE_MASK | ((1 << s_bits) - 1)); - - tcg_out_modrm(s, 0x81, 4, r1); /* andl $x, r1 */ - tcg_out32(s, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS); + tgen_arithi(s, ARITH_AND, r0, TARGET_PAGE_MASK | ((1 << s_bits) - 1), 0); + tgen_arithi(s, ARITH_AND, r1, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS, 0); tcg_out_opc(s, 0x8d); /* lea offset(r1, %ebp), r1 */ tcg_out8(s, 0x80 | (r1 << 3) | 0x04); @@ -834,16 +832,12 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, #if defined(CONFIG_SOFTMMU) tcg_out_mov(s, r1, addr_reg); - tcg_out_mov(s, r0, addr_reg); tcg_out_shifti(s, SHIFT_SHR, r1, TARGET_PAGE_BITS - CPU_TLB_ENTRY_BITS); - tcg_out_modrm(s, 0x81, 4, r0); /* andl $x, r0 */ - tcg_out32(s, TARGET_PAGE_MASK | ((1 << s_bits) - 1)); - - tcg_out_modrm(s, 0x81, 4, r1); /* andl $x, r1 */ - tcg_out32(s, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS); + tgen_arithi(s, ARITH_AND, r0, TARGET_PAGE_MASK | ((1 << s_bits) - 1), 0); + tgen_arithi(s, ARITH_AND, r1, (CPU_TLB_SIZE - 1) << CPU_TLB_ENTRY_BITS, 0); tcg_out_opc(s, 0x8d); /* lea offset(r1, %ebp), r1 */ tcg_out8(s, 0x80 | (r1 << 3) | 0x04); |