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author | Aurelien Jarno <aurelien@aurel32.net> | 2010-03-02 23:16:36 +0100 |
---|---|---|
committer | Aurelien Jarno <aurelien@aurel32.net> | 2010-03-14 22:04:50 +0100 |
commit | 31d6655100cd54a8c081e04349661c0f08117e66 (patch) | |
tree | e78fc8236bb36ab7b8ecd305f67780c1e97b76a5 | |
parent | 7296abaccc98872e28cec50091dbf26d38e4f062 (diff) | |
download | qemu-31d6655100cd54a8c081e04349661c0f08117e66.tar.gz qemu-31d6655100cd54a8c081e04349661c0f08117e66.tar.bz2 qemu-31d6655100cd54a8c081e04349661c0f08117e66.zip |
tcg: add div/rem 32-bit helpers
Some targets like ARM would benefit to use 32-bit helpers for
div/rem/divu/remu.
Create a #define for div2 so that targets can select between
div, div2 and helper implementation. Use the helper version if none
of the #define are present.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
-rw-r--r-- | tcg-runtime.c | 24 | ||||
-rw-r--r-- | tcg/arm/tcg-target.h | 1 | ||||
-rw-r--r-- | tcg/hppa/tcg-target.h | 1 | ||||
-rw-r--r-- | tcg/i386/tcg-target.h | 1 | ||||
-rw-r--r-- | tcg/tcg-op.h | 57 | ||||
-rw-r--r-- | tcg/tcg-runtime.h | 5 | ||||
-rw-r--r-- | tcg/x86_64/tcg-target.h | 2 |
7 files changed, 89 insertions, 2 deletions
diff --git a/tcg-runtime.c b/tcg-runtime.c index 219cade429..abfc36498f 100644 --- a/tcg-runtime.c +++ b/tcg-runtime.c @@ -25,6 +25,30 @@ #include "tcg/tcg-runtime.h" +/* 32-bit helpers */ + +int32_t tcg_helper_div_i32(int32_t arg1, int32_t arg2) +{ + return arg1 / arg2; +} + +int32_t tcg_helper_rem_i32(int32_t arg1, int32_t arg2) +{ + return arg1 % arg2; +} + +uint32_t tcg_helper_divu_i32(uint32_t arg1, uint32_t arg2) +{ + return arg1 / arg2; +} + +uint32_t tcg_helper_remu_i32(uint32_t arg1, uint32_t arg2) +{ + return arg1 % arg2; +} + +/* 64-bit helpers */ + int64_t tcg_helper_shl_i64(int64_t arg1, int64_t arg2) { return arg1 << arg2; diff --git a/tcg/arm/tcg-target.h b/tcg/arm/tcg-target.h index 4cad967ec5..4b2b0be14c 100644 --- a/tcg/arm/tcg-target.h +++ b/tcg/arm/tcg-target.h @@ -56,6 +56,7 @@ enum { #define TCG_TARGET_CALL_STACK_OFFSET 0 /* optional instructions */ +#define TCG_TARGET_HAS_div2_i32 #define TCG_TARGET_HAS_ext8s_i32 #define TCG_TARGET_HAS_ext16s_i32 // #define TCG_TARGET_HAS_ext8u_i32 diff --git a/tcg/hppa/tcg-target.h b/tcg/hppa/tcg-target.h index 7ab6f0cede..fa39bfce26 100644 --- a/tcg/hppa/tcg-target.h +++ b/tcg/hppa/tcg-target.h @@ -75,6 +75,7 @@ enum { #define TCG_TARGET_STACK_GROWSUP /* optional instructions */ +#define TCG_TARGET_HAS_div2_i32 //#define TCG_TARGET_HAS_ext8s_i32 //#define TCG_TARGET_HAS_ext16s_i32 //#define TCG_TARGET_HAS_bswap16_i32 diff --git a/tcg/i386/tcg-target.h b/tcg/i386/tcg-target.h index f97034cd50..e994fd5553 100644 --- a/tcg/i386/tcg-target.h +++ b/tcg/i386/tcg-target.h @@ -45,6 +45,7 @@ enum { #define TCG_TARGET_CALL_STACK_OFFSET 0 /* optional instructions */ +#define TCG_TARGET_HAS_div2_i32 #define TCG_TARGET_HAS_rot_i32 #define TCG_TARGET_HAS_ext8s_i32 #define TCG_TARGET_HAS_ext16s_i32 diff --git a/tcg/tcg-op.h b/tcg/tcg-op.h index 6ae1760298..c71e1a8c51 100644 --- a/tcg/tcg-op.h +++ b/tcg/tcg-op.h @@ -365,6 +365,19 @@ static inline void tcg_gen_helperN(void *func, int flags, int sizemask, } /* FIXME: Should this be pure? */ +static inline void tcg_gen_helper32(void *func, TCGv_i32 ret, + TCGv_i32 a, TCGv_i32 b) +{ + TCGv_ptr fn; + TCGArg args[2]; + fn = tcg_const_ptr((tcg_target_long)func); + args[0] = GET_TCGV_I32(a); + args[1] = GET_TCGV_I32(b); + tcg_gen_callN(&tcg_ctx, fn, 0, 0, GET_TCGV_I32(ret), 2, args); + tcg_temp_free_ptr(fn); +} + +/* FIXME: Should this be pure? */ static inline void tcg_gen_helper64(void *func, TCGv_i64 ret, TCGv_i64 a, TCGv_i64 b) { @@ -635,7 +648,7 @@ static inline void tcg_gen_remu_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2) { tcg_gen_op3_i32(INDEX_op_remu_i32, ret, arg1, arg2); } -#else +#elif defined(TCG_TARGET_HAS_div2_i32) static inline void tcg_gen_div_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2) { TCGv_i32 t0; @@ -671,6 +684,26 @@ static inline void tcg_gen_remu_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2) tcg_gen_op5_i32(INDEX_op_divu2_i32, t0, ret, arg1, t0, arg2); tcg_temp_free_i32(t0); } +#else +static inline void tcg_gen_div_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2) +{ + tcg_gen_helper32(tcg_helper_div_i32, ret, arg1, arg2); +} + +static inline void tcg_gen_rem_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2) +{ + tcg_gen_helper32(tcg_helper_rem_i32, ret, arg1, arg2); +} + +static inline void tcg_gen_divu_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2) +{ + tcg_gen_helper32(tcg_helper_divu_i32, ret, arg1, arg2); +} + +static inline void tcg_gen_remu_i32(TCGv_i32 ret, TCGv_i32 arg1, TCGv_i32 arg2) +{ + tcg_gen_helper32(tcg_helper_remu_i32, ret, arg1, arg2); +} #endif #if TCG_TARGET_REG_BITS == 32 @@ -1135,7 +1168,7 @@ static inline void tcg_gen_remu_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2) { tcg_gen_op3_i64(INDEX_op_remu_i64, ret, arg1, arg2); } -#else +#elif defined(TCG_TARGET_HAS_div2_i64) static inline void tcg_gen_div_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2) { TCGv_i64 t0; @@ -1171,6 +1204,26 @@ static inline void tcg_gen_remu_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2) tcg_gen_op5_i64(INDEX_op_divu2_i64, t0, ret, arg1, t0, arg2); tcg_temp_free_i64(t0); } +#else +static inline void tcg_gen_div_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2) +{ + tcg_gen_helper64(tcg_helper_div_i64, ret, arg1, arg2); +} + +static inline void tcg_gen_rem_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2) +{ + tcg_gen_helper64(tcg_helper_rem_i64, ret, arg1, arg2); +} + +static inline void tcg_gen_divu_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2) +{ + tcg_gen_helper64(tcg_helper_divu_i64, ret, arg1, arg2); +} + +static inline void tcg_gen_remu_i64(TCGv_i64 ret, TCGv_i64 arg1, TCGv_i64 arg2) +{ + tcg_gen_helper64(tcg_helper_remu_i64, ret, arg1, arg2); +} #endif #endif diff --git a/tcg/tcg-runtime.h b/tcg/tcg-runtime.h index e750cc1952..5615b133e0 100644 --- a/tcg/tcg-runtime.h +++ b/tcg/tcg-runtime.h @@ -2,6 +2,11 @@ #define TCG_RUNTIME_H /* tcg-runtime.c */ +int32_t tcg_helper_div_i32(int32_t arg1, int32_t arg2); +int32_t tcg_helper_rem_i32(int32_t arg1, int32_t arg2); +uint32_t tcg_helper_divu_i32(uint32_t arg1, uint32_t arg2); +uint32_t tcg_helper_remu_i32(uint32_t arg1, uint32_t arg2); + int64_t tcg_helper_shl_i64(int64_t arg1, int64_t arg2); int64_t tcg_helper_shr_i64(int64_t arg1, int64_t arg2); int64_t tcg_helper_sar_i64(int64_t arg1, int64_t arg2); diff --git a/tcg/x86_64/tcg-target.h b/tcg/x86_64/tcg-target.h index 765f0b4d81..d1e8b9e131 100644 --- a/tcg/x86_64/tcg-target.h +++ b/tcg/x86_64/tcg-target.h @@ -56,6 +56,8 @@ enum { #define TCG_TARGET_CALL_STACK_OFFSET 0 /* optional instructions */ +#define TCG_TARGET_HAS_div2_i32 +#define TCG_TARGET_HAS_div2_i64 #define TCG_TARGET_HAS_bswap16_i32 #define TCG_TARGET_HAS_bswap16_i64 #define TCG_TARGET_HAS_bswap32_i32 |