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SubjectRe: [PATCH v14 04/15] selftests/powerpc: Add ptrace tests for GPR/FPR registers
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On Mon, 2016-09-12 at 15:33 +0800, wei.guo.simon@gmail.com wrote:
> From: Anshuman Khandual <khandual@linux.vnet.ibm.com>
>
> This patch adds ptrace interface test for GPR/FPR registers.
> This adds ptrace interface based helper functions related to
> GPR/FPR access and some assembly helper functions related to
> GPR/FPR registers.
>
> Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
> Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
> ---
>  tools/testing/selftests/powerpc/ptrace/Makefile    |   3 +-
>  .../testing/selftests/powerpc/ptrace/ptrace-gpr.c  | 196
> +++++++++++++++++++
>  .../testing/selftests/powerpc/ptrace/ptrace-gpr.h  |  74 ++++++++
>  tools/testing/selftests/powerpc/ptrace/ptrace.S    | 131
> +++++++++++++
>  tools/testing/selftests/powerpc/ptrace/ptrace.h    | 211
> +++++++++++++++++++++
>  5 files changed, 614 insertions(+), 1 deletion(-)
>  create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-
> gpr.c
>  create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace-
> gpr.h
>  create mode 100644 tools/testing/selftests/powerpc/ptrace/ptrace.S
>

[snip]

> new file mode 100644
> index 0000000..193beea
> --- /dev/null
> +++ b/tools/testing/selftests/powerpc/ptrace/ptrace.S
> @@ -0,0 +1,131 @@
> +/*
> + * Ptrace interface test helper assembly functions
> + *
> + * Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License
> + * as published by the Free Software Foundation; either version
> + * 2 of the License, or (at your option) any later version.
> + */
> +#include <ppc-asm.h>
> +#include "../reg.h"
> +
> +
> +/* Non volatile GPR - unsigned long buf[18] */
> +FUNC_START(load_gpr)
> + ld 14, 0*8(3)
> + ld 15, 1*8(3)
> + ld 16, 2*8(3)
> + ld 17, 3*8(3)
> + ld 18, 4*8(3)
> + ld 19, 5*8(3)
> + ld 20, 6*8(3)
> + ld 21, 7*8(3)
> + ld 22, 8*8(3)
> + ld 23, 9*8(3)
> + ld 24, 10*8(3)
> + ld 25, 11*8(3)
> + ld 26, 12*8(3)
> + ld 27, 13*8(3)
> + ld 28, 14*8(3)
> + ld 29, 15*8(3)
> + ld 30, 16*8(3)
> + ld 31, 17*8(3)
> + blr
> +FUNC_END(load_gpr)
> +
> +FUNC_START(store_gpr)
> + std 14, 0*8(3)
> + std 15, 1*8(3)
> + std 16, 2*8(3)
> + std 17, 3*8(3)
> + std 18, 4*8(3)
> + std 19, 5*8(3)
> + std 20, 6*8(3)
> + std 21, 7*8(3)
> + std 22, 8*8(3)
> + std 23, 9*8(3)
> + std 24, 10*8(3)
> + std 25, 11*8(3)
> + std 26, 12*8(3)
> + std 27, 13*8(3)
> + std 28, 14*8(3)
> + std 29, 15*8(3)
> + std 30, 16*8(3)
> + std 31, 17*8(3)
> + blr
> +FUNC_END(store_gpr)
> +
> +/* Single Precision Float - float buf[32] */
> +FUNC_START(load_fpr)
> + lfs 0, 0*4(3)
> + lfs 1, 1*4(3)
> + lfs 2, 2*4(3)
> + lfs 3, 3*4(3)
> + lfs 4, 4*4(3)
> + lfs 5, 5*4(3)
> + lfs 6, 6*4(3)
> + lfs 7, 7*4(3)
> + lfs 8, 8*4(3)
> + lfs 9, 9*4(3)
> + lfs 10, 10*4(3)
> + lfs 11, 11*4(3)
> + lfs 12, 12*4(3)
> + lfs 13, 13*4(3)
> + lfs 14, 14*4(3)
> + lfs 15, 15*4(3)
> + lfs 16, 16*4(3)
> + lfs 17, 17*4(3)
> + lfs 18, 18*4(3)
> + lfs 19, 19*4(3)
> + lfs 20, 20*4(3)
> + lfs 21, 21*4(3)
> + lfs 22, 22*4(3)
> + lfs 23, 23*4(3)
> + lfs 24, 24*4(3)
> + lfs 25, 25*4(3)
> + lfs 26, 26*4(3)
> + lfs 27, 27*4(3)
> + lfs 28, 28*4(3)
> + lfs 29, 29*4(3)
> + lfs 30, 30*4(3)
> + lfs 31, 31*4(3)
> + blr
> +FUNC_END(load_fpr)
> +
> +FUNC_START(store_fpr)
> + stfs 0, 0*4(3)
> + stfs 1, 1*4(3)
> + stfs 2, 2*4(3)
> + stfs 3, 3*4(3)
> + stfs 4, 4*4(3)
> + stfs 5, 5*4(3)
> + stfs 6, 6*4(3)
> + stfs 7, 7*4(3)
> + stfs 8, 8*4(3)
> + stfs 9, 9*4(3)
> + stfs 10, 10*4(3)
> + stfs 11, 11*4(3)
> + stfs 12, 12*4(3)
> + stfs 13, 13*4(3)
> + stfs 14, 14*4(3)
> + stfs 15, 15*4(3)
> + stfs 16, 16*4(3)
> + stfs 17, 17*4(3)
> + stfs 18, 18*4(3)
> + stfs 19, 19*4(3)
> + stfs 20, 20*4(3)
> + stfs 21, 21*4(3)
> + stfs 22, 22*4(3)
> + stfs 23, 23*4(3)
> + stfs 24, 24*4(3)
> + stfs 25, 25*4(3)
> + stfs 26, 26*4(3)
> + stfs 27, 27*4(3)
> + stfs 28, 28*4(3)
> + stfs 29, 29*4(3)
> + stfs 30, 30*4(3)
> + stfs 31, 31*4(3)
> + blr
> +FUNC_END(store_fpr)

I wrote similar functions in math/fpu_asm.S perhaps it would be time
consolidate those and these into an fpu_asm.S file at a higher level,
TM related tests would benefit as well.

> diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace.h
> b/tools/testing/selftests/powerpc/ptrace/ptrace.h
> index fbf73ca..1019004 100644
> --- a/tools/testing/selftests/powerpc/ptrace/ptrace.h
> +++ b/tools/testing/selftests/powerpc/ptrace/ptrace.h
> @@ -157,6 +157,214 @@ fail:
>   return TEST_FAIL;
>  }
>  
[snip]

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