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Add assembler helper to calculate PMF timestamp offset

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Given the service name and timestamp id, this assembler macro
calculates the offset into a memory region where the per-cpu timestamp
value is located.

Change-Id: I47f6dfa2a17be182675e2ca0489d6eed42433209
This commit is contained in:
dp-arm 2016-08-15 10:35:54 +01:00
parent afdda571f1
commit 5695cfe77f
2 changed files with 55 additions and 2 deletions
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53
include/lib/pmf/pmf_asm_macros.S Normal file
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@ -0,0 +1,53 @@
/*
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __PMF_ASM_MACROS_S__
#define __PMF_ASM_MACROS_S__
#define PMF_TS_SIZE 8
/*
* This macro calculates the offset into the memory
* region where the per-cpu timestamp value is stored
* for the given service name and timestamp id.
* Clobbers: x0 - x9
*/
.macro pmf_calc_timestamp_offset _name _tid
mov x9, x30
bl plat_my_core_pos
mov x30, x9
ldr x1, =__PERCPU_TIMESTAMP_SIZE__
mov x2, #(\_tid * PMF_TS_SIZE)
madd x0, x0, x1, x2
ldr x1, =pmf_ts_mem_\_name
add x0, x0, x1
.endm
#endif /* __PMF_ASM_MACROS_S__ */

4
include/lib/pmf/pmf_helpers.h
View file

@ -69,8 +69,8 @@ typedef struct pmf_svc_desc {
/*
* Convenience macro to allocate memory for a PMF service.
*/
#define PMF_ALLOCATE_TIMESTAMP_MEMORY(_name, _total_id) \
static unsigned long long pmf_ts_mem_ ## _name[_total_id] \
#define PMF_ALLOCATE_TIMESTAMP_MEMORY(_name, _total_id) \
unsigned long long pmf_ts_mem_ ## _name[_total_id] \
__section("pmf_timestamp_array") __used;
/*