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[Qemu-devel] Re: [PATCH 2/7] tcg-ppc: Implement deposit operation.
From: |
malc |
Subject: |
[Qemu-devel] Re: [PATCH 2/7] tcg-ppc: Implement deposit operation. |
Date: |
Tue, 11 Jan 2011 15:40:17 +0300 (MSK) |
User-agent: |
Alpine 2.00 (LNX 1167 2008-08-23) |
On Mon, 10 Jan 2011, Richard Henderson wrote:
> Signed-off-by: Richard Henderson <address@hidden>
> ---
> tcg/ppc/tcg-target.c | 17 ++++++++++++++++-
> tcg/ppc/tcg-target.h | 1 +
> 2 files changed, 17 insertions(+), 1 deletions(-)
>
> diff --git a/tcg/ppc/tcg-target.c b/tcg/ppc/tcg-target.c
> index 7970268..39aa4f1 100644
> --- a/tcg/ppc/tcg-target.c
> +++ b/tcg/ppc/tcg-target.c
> @@ -1611,6 +1611,21 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc,
> const TCGArg *args,
> }
> break;
>
> + case INDEX_op_deposit_i32:
> + {
> + unsigned len = args[4];
> + unsigned lsb_ofs = args[3];
> + unsigned msb_ofs = 31 - lsb_ofs;
> +
> + tcg_out32 (s, RLWIMI
> + | RA(args[0])
> + | RS(args[2])
> + | SH(lsb_ofs)
> + | MB(msb_ofs - len + 1)
> + | ME(msb_ofs));
> + }
> + break;
> +
> case INDEX_op_add2_i32:
> if (args[0] == args[3] || args[0] == args[5]) {
> tcg_out32 (s, ADDC | TAB (0, args[2], args[4]));
> @@ -1829,9 +1844,9 @@ static const TCGTargetOpDef ppc_op_defs[] = {
> { INDEX_op_shl_i32, { "r", "r", "ri" } },
> { INDEX_op_shr_i32, { "r", "r", "ri" } },
> { INDEX_op_sar_i32, { "r", "r", "ri" } },
> -
> { INDEX_op_rotl_i32, { "r", "r", "ri" } },
> { INDEX_op_rotr_i32, { "r", "r", "ri" } },
> + { INDEX_op_deposit_i32, { "r", "0", "r" } },
>
Are you sure about "0" constraint?
> { INDEX_op_brcond_i32, { "r", "ri" } },
>
> diff --git a/tcg/ppc/tcg-target.h b/tcg/ppc/tcg-target.h
> index a1f8599..bbf38d5 100644
> --- a/tcg/ppc/tcg-target.h
> +++ b/tcg/ppc/tcg-target.h
> @@ -92,6 +92,7 @@ enum {
> #define TCG_TARGET_HAS_eqv_i32
> #define TCG_TARGET_HAS_nand_i32
> #define TCG_TARGET_HAS_nor_i32
> +#define TCG_TARGET_HAS_deposit_i32
>
> #define TCG_AREG0 TCG_REG_R27
>
>
--
mailto:address@hidden
- [Qemu-devel] [PATCH 0/7] Define "deposit" tcg operation, v2, Richard Henderson, 2011/01/10
- [Qemu-devel] [PATCH 7/7] target-ppc: Use deposit operation., Richard Henderson, 2011/01/10
- [Qemu-devel] [PATCH 6/7] target-i386: Use deposit operation., Richard Henderson, 2011/01/10
- [Qemu-devel] [PATCH 1/7] tcg: Define "deposit" as an optional operation., Richard Henderson, 2011/01/10
- [Qemu-devel] [PATCH 3/7] tcg-hppa: Implement deposit operation., Richard Henderson, 2011/01/10