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Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status |
Date: |
Sun, 3 Apr 2011 11:51:23 +0100 |
On 3 April 2011 10:41, Blue Swirl <address@hidden> wrote:
> On Sat, Apr 2, 2011 at 1:33 AM, Peter Maydell <address@hidden> wrote:
>> Nobody seemed to have a coherent rule about when functions
>> should be in op_helper.c and use the global 'env' variable
>> and when they should be in some other file and have 'env'
>> passed as a parameter
> In general, helpers for the translated code belong to op_helper.c.
> They can and should access global env directly for speed. If a helper
> is used for both translated code and outside of it, a wrapper should
> be added to do global env shuffling (or for example a copy without
> shuffling added).
OK, we can do that, but at the moment "helper function not in
op_helper.c" is hugely in the majority so there's a lot of
code we'd be moving around:
$ grep -c HELPER target-arm/*.c
target-arm/helper.c:68
target-arm/iwmmxt_helper.c:59
target-arm/machine.c:0
target-arm/neon_helper.c:103
target-arm/op_helper.c:28
target-arm/translate.c:2
(ie just 10% or so of ARM helper functions are in op_helper.c)
...and this cleanup would basically amount to folding
neon_helper.c, iwmmxt_helper.c and bits of helper.c into
op_helper.c (and then removing the 'env' parameters, so
a big patch to translate.c as well, which I don't suppose
anybody maintaining an out-of-tree target-arm patchset will
thank us for :-)).
But I can submit a patch to do that if it's the right thing.
-- PMM
- [Qemu-devel] [PATCH 02/10] target-arm/neon_helper.c: Use make_float32/float32_val macros, (continued)
- [Qemu-devel] [PATCH 02/10] target-arm/neon_helper.c: Use make_float32/float32_val macros, Peter Maydell, 2011/04/01
- [Qemu-devel] [PATCH 06/10] softfloat: Add float*_min() and float*_max() functions, Peter Maydell, 2011/04/01
- [Qemu-devel] [PATCH 07/10] target-arm: Use new softfloat min/max functions for VMAX, VMIN, Peter Maydell, 2011/04/01
- [Qemu-devel] [PATCH 10/10] target-arm/helper.c: For float-int conversion helpers pass ints as ints, Peter Maydell, 2011/04/01
- [Qemu-devel] [PATCH 04/10] target-arm: Fix VCLE.F32 #0, VCLT.F32 #0 NaN handling, Peter Maydell, 2011/04/01
- [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status, Peter Maydell, 2011/04/01
- Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status, Blue Swirl, 2011/04/01
- Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status, Peter Maydell, 2011/04/01
- Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status, Blue Swirl, 2011/04/03
- Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status,
Peter Maydell <=
- Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status, Blue Swirl, 2011/04/03
- Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status, Peter Maydell, 2011/04/03
- Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status, Blue Swirl, 2011/04/03
- Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status, Aurelien Jarno, 2011/04/03
- Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status, Peter Maydell, 2011/04/03
- Re: [Qemu-devel] [PATCH 01/10] target-arm: Make Neon helper routines use correct FP status, Aurelien Jarno, 2011/04/03
[Qemu-devel] [PATCH 05/10] target-arm: Correct ABD's handling of negative zeroes, Peter Maydell, 2011/04/01
[Qemu-devel] [PATCH 03/10] target-arm: Return right result for Neon comparison with NaNs, Peter Maydell, 2011/04/01
[Qemu-devel] [PATCH 08/10] target-arm: Fix VLD of single element to all lanes, Peter Maydell, 2011/04/01
Re: [Qemu-devel] [PATCH 00/10] [PULL] ARM Neon fixes, Aurelien Jarno, 2011/04/03