/* * Copyright (c) 2021, Arm Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ #include #include #include .globl amu_group0_cnt_read_internal .globl amu_group0_cnt_write_internal .globl amu_group1_cnt_read_internal .globl amu_group1_cnt_write_internal .globl amu_group1_set_evtype_internal /* * uint64_t amu_group0_cnt_read_internal(int idx); * * Given `idx`, read the corresponding AMU counter * and return it in `r0` and `r1`. */ func amu_group0_cnt_read_internal #if ENABLE_ASSERTIONS /* `idx` should be between [0, 3] */ mov r1, r0 lsr r1, r1, #2 cmp r1, #0 ASM_ASSERT(eq) #endif /* * Given `idx` calculate address of ldcopr16/bx lr instruction pair * in the table below. */ adr r1, 1f lsl r0, r0, #3 /* each ldcopr16/bx lr sequence is 8 bytes */ add r1, r1, r0 bx r1 1: ldcopr16 r0, r1, AMEVCNTR00 /* index 0 */ bx lr ldcopr16 r0, r1, AMEVCNTR01 /* index 1 */ bx lr ldcopr16 r0, r1, AMEVCNTR02 /* index 2 */ bx lr ldcopr16 r0, r1, AMEVCNTR03 /* index 3 */ bx lr endfunc amu_group0_cnt_read_internal /* * void amu_group0_cnt_write_internal(int idx, uint64_t val); * * Given `idx`, write `val` to the corresponding AMU counter. * `idx` is passed in `r0` and `val` is passed in `r2` and `r3`. * `r1` is used as a scratch register. */ func amu_group0_cnt_write_internal #if ENABLE_ASSERTIONS /* `idx` should be between [0, 3] */ mov r1, r0 lsr r1, r1, #2 cmp r1, #0 ASM_ASSERT(eq) #endif /* * Given `idx` calculate address of stcopr16/bx lr instruction pair * in the table below. */ adr r1, 1f lsl r0, r0, #3 /* each stcopr16/bx lr sequence is 8 bytes */ add r1, r1, r0 bx r1 1: stcopr16 r2, r3, AMEVCNTR00 /* index 0 */ bx lr stcopr16 r2, r3, AMEVCNTR01 /* index 1 */ bx lr stcopr16 r2, r3, AMEVCNTR02 /* index 2 */ bx lr stcopr16 r2, r3, AMEVCNTR03 /* index 3 */ bx lr endfunc amu_group0_cnt_write_internal #if ENABLE_AMU_AUXILIARY_COUNTERS /* * uint64_t amu_group1_cnt_read_internal(int idx); * * Given `idx`, read the corresponding AMU counter * and return it in `r0` and `r1`. */ func amu_group1_cnt_read_internal #if ENABLE_ASSERTIONS /* `idx` should be between [0, 15] */ mov r1, r0 lsr r1, r1, #4 cmp r1, #0 ASM_ASSERT(eq) #endif /* * Given `idx` calculate address of ldcopr16/bx lr instruction pair * in the table below. */ adr r1, 1f lsl r0, r0, #3 /* each ldcopr16/bx lr sequence is 8 bytes */ add r1, r1, r0 bx r1 1: ldcopr16 r0, r1, AMEVCNTR10 /* index 0 */ bx lr ldcopr16 r0, r1, AMEVCNTR11 /* index 1 */ bx lr ldcopr16 r0, r1, AMEVCNTR12 /* index 2 */ bx lr ldcopr16 r0, r1, AMEVCNTR13 /* index 3 */ bx lr ldcopr16 r0, r1, AMEVCNTR14 /* index 4 */ bx lr ldcopr16 r0, r1, AMEVCNTR15 /* index 5 */ bx lr ldcopr16 r0, r1, AMEVCNTR16 /* index 6 */ bx lr ldcopr16 r0, r1, AMEVCNTR17 /* index 7 */ bx lr ldcopr16 r0, r1, AMEVCNTR18 /* index 8 */ bx lr ldcopr16 r0, r1, AMEVCNTR19 /* index 9 */ bx lr ldcopr16 r0, r1, AMEVCNTR1A /* index 10 */ bx lr ldcopr16 r0, r1, AMEVCNTR1B /* index 11 */ bx lr ldcopr16 r0, r1, AMEVCNTR1C /* index 12 */ bx lr ldcopr16 r0, r1, AMEVCNTR1D /* index 13 */ bx lr ldcopr16 r0, r1, AMEVCNTR1E /* index 14 */ bx lr ldcopr16 r0, r1, AMEVCNTR1F /* index 15 */ bx lr endfunc amu_group1_cnt_read_internal /* * void amu_group1_cnt_write_internal(int idx, uint64_t val); * * Given `idx`, write `val` to the corresponding AMU counter. * `idx` is passed in `r0` and `val` is passed in `r2` and `r3`. * `r1` is used as a scratch register. */ func amu_group1_cnt_write_internal #if ENABLE_ASSERTIONS /* `idx` should be between [0, 15] */ mov r1, r0 lsr r1, r1, #4 cmp r1, #0 ASM_ASSERT(eq) #endif /* * Given `idx` calculate address of ldcopr16/bx lr instruction pair * in the table below. */ adr r1, 1f lsl r0, r0, #3 /* each stcopr16/bx lr sequence is 8 bytes */ add r1, r1, r0 bx r1 1: stcopr16 r2, r3, AMEVCNTR10 /* index 0 */ bx lr stcopr16 r2, r3, AMEVCNTR11 /* index 1 */ bx lr stcopr16 r2, r3, AMEVCNTR12 /* index 2 */ bx lr stcopr16 r2, r3, AMEVCNTR13 /* index 3 */ bx lr stcopr16 r2, r3, AMEVCNTR14 /* index 4 */ bx lr stcopr16 r2, r3, AMEVCNTR15 /* index 5 */ bx lr stcopr16 r2, r3, AMEVCNTR16 /* index 6 */ bx lr stcopr16 r2, r3, AMEVCNTR17 /* index 7 */ bx lr stcopr16 r2, r3, AMEVCNTR18 /* index 8 */ bx lr stcopr16 r2, r3, AMEVCNTR19 /* index 9 */ bx lr stcopr16 r2, r3, AMEVCNTR1A /* index 10 */ bx lr stcopr16 r2, r3, AMEVCNTR1B /* index 11 */ bx lr stcopr16 r2, r3, AMEVCNTR1C /* index 12 */ bx lr stcopr16 r2, r3, AMEVCNTR1D /* index 13 */ bx lr stcopr16 r2, r3, AMEVCNTR1E /* index 14 */ bx lr stcopr16 r2, r3, AMEVCNTR1F /* index 15 */ bx lr endfunc amu_group1_cnt_write_internal /* * void amu_group1_set_evtype_internal(int idx, unsigned int val); * * Program the AMU event type register indexed by `idx` * with the value `val`. */ func amu_group1_set_evtype_internal #if ENABLE_ASSERTIONS /* `idx` should be between [0, 15] */ mov r2, r0 lsr r2, r2, #4 cmp r2, #0 ASM_ASSERT(eq) /* val should be between [0, 65535] */ mov r2, r1 lsr r2, r2, #16 cmp r2, #0 ASM_ASSERT(eq) #endif /* * Given `idx` calculate address of stcopr/bx lr instruction pair * in the table below. */ adr r2, 1f lsl r0, r0, #3 /* each stcopr/bx lr sequence is 8 bytes */ add r2, r2, r0 bx r2 1: stcopr r1, AMEVTYPER10 /* index 0 */ bx lr stcopr r1, AMEVTYPER11 /* index 1 */ bx lr stcopr r1, AMEVTYPER12 /* index 2 */ bx lr stcopr r1, AMEVTYPER13 /* index 3 */ bx lr stcopr r1, AMEVTYPER14 /* index 4 */ bx lr stcopr r1, AMEVTYPER15 /* index 5 */ bx lr stcopr r1, AMEVTYPER16 /* index 6 */ bx lr stcopr r1, AMEVTYPER17 /* index 7 */ bx lr stcopr r1, AMEVTYPER18 /* index 8 */ bx lr stcopr r1, AMEVTYPER19 /* index 9 */ bx lr stcopr r1, AMEVTYPER1A /* index 10 */ bx lr stcopr r1, AMEVTYPER1B /* index 11 */ bx lr stcopr r1, AMEVTYPER1C /* index 12 */ bx lr stcopr r1, AMEVTYPER1D /* index 13 */ bx lr stcopr r1, AMEVTYPER1E /* index 14 */ bx lr stcopr r1, AMEVTYPER1F /* index 15 */ bx lr endfunc amu_group1_set_evtype_internal #endif