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Diffstat (limited to 'lib/arch/aarch64/sysreg_helpers.S')
| -rw-r--r-- | lib/arch/aarch64/sysreg_helpers.S | 1154 |
1 files changed, 1154 insertions, 0 deletions
diff --git a/lib/arch/aarch64/sysreg_helpers.S b/lib/arch/aarch64/sysreg_helpers.S new file mode 100644 index 00000000..e68192ff --- /dev/null +++ b/lib/arch/aarch64/sysreg_helpers.S @@ -0,0 +1,1154 @@ +/* + * Copyright (c) 2013, ARM Limited. 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. + */ + +#include <arch_helpers.h> + + .globl read_vbar + .globl read_vbar_el1 + .globl read_vbar_el2 + .globl read_vbar_el3 + .globl write_vbar + .globl write_vbar_el1 + .globl write_vbar_el2 + .globl write_vbar_el3 + + .globl read_sctlr + .globl read_sctlr_el1 + .globl read_sctlr_el2 + .globl read_sctlr_el3 + .globl write_sctlr + .globl write_sctlr_el1 + .globl write_sctlr_el2 + .globl write_sctlr_el3 + + .globl read_actlr + .globl read_actlr_el1 + .globl read_actlr_el2 + .globl read_actlr_el3 + .globl write_actlr + .globl write_actlr_el1 + .globl write_actlr_el2 + .globl write_actlr_el3 + + .globl read_esr + .globl read_esr_el1 + .globl read_esr_el2 + .globl read_esr_el3 + .globl write_esr + .globl write_esr_el1 + .globl write_esr_el2 + .globl write_esr_el3 + + .globl read_afsr0 + .globl read_afsr0_el1 + .globl read_afsr0_el2 + .globl read_afsr0_el3 + .globl write_afsr0 + .globl write_afsr0_el1 + .globl write_afsr0_el2 + .globl write_afsr0_el3 + + .globl read_afsr1 + .globl read_afsr1_el1 + .globl read_afsr1_el2 + .globl read_afsr1_el3 + .globl write_afsr1 + .globl write_afsr1_el1 + .globl write_afsr1_el2 + .globl write_afsr1_el3 + + .globl read_far + .globl read_far_el1 + .globl read_far_el2 + .globl read_far_el3 + .globl write_far + .globl write_far_el1 + .globl write_far_el2 + .globl write_far_el3 + + .globl read_mair + .globl read_mair_el1 + .globl read_mair_el2 + .globl read_mair_el3 + .globl write_mair + .globl write_mair_el1 + .globl write_mair_el2 + .globl write_mair_el3 + + .globl read_amair + .globl read_amair_el1 + .globl read_amair_el2 + .globl read_amair_el3 + .globl write_amair + .globl write_amair_el1 + .globl write_amair_el2 + .globl write_amair_el3 + + .globl read_rvbar + .globl read_rvbar_el1 + .globl read_rvbar_el2 + .globl read_rvbar_el3 + + .globl read_rmr + .globl read_rmr_el1 + .globl read_rmr_el2 + .globl read_rmr_el3 + .globl write_rmr + .globl write_rmr_el1 + .globl write_rmr_el2 + .globl write_rmr_el3 + + .globl read_tcr + .globl read_tcr_el1 + .globl read_tcr_el2 + .globl read_tcr_el3 + .globl write_tcr + .globl write_tcr_el1 + .globl write_tcr_el2 + .globl write_tcr_el3 + + .globl read_cptr + .globl read_cptr_el2 + .globl read_cptr_el3 + .globl write_cptr + .globl write_cptr_el2 + .globl write_cptr_el3 + + .globl read_ttbr0 + .globl read_ttbr0_el1 + .globl read_ttbr0_el2 + .globl read_ttbr0_el3 + .globl write_ttbr0 + .globl write_ttbr0_el1 + .globl write_ttbr0_el2 + .globl write_ttbr0_el3 + + .globl read_ttbr1 + .globl read_ttbr1_el1 + .globl read_ttbr1_el2 + .globl write_ttbr1 + .globl write_ttbr1_el1 + .globl write_ttbr1_el2 + + .globl read_cpacr + .globl write_cpacr + + .globl read_cntfrq + .globl write_cntfrq + + .globl read_cpuectlr + .globl write_cpuectlr + + .globl read_cnthctl_el2 + .globl write_cnthctl_el2 + + .globl read_cntfrq_el0 + .globl write_cntfrq_el0 + + .globl read_scr + .globl write_scr + + .globl read_hcr + .globl write_hcr + + .globl read_midr + .globl read_mpidr + + .globl read_current_el + .globl read_id_pfr1_el1 + .globl read_id_aa64pfr0_el1 + +#if SUPPORT_VFP + .globl enable_vfp + .globl read_fpexc + .globl write_fpexc +#endif + + + .section .text, "ax" + +read_current_el:; .type read_current_el, %function + mrs x0, CurrentEl + ret + + +read_id_pfr1_el1:; .type read_id_pfr1_el1, %function + mrs x0, id_pfr1_el1 + ret + + +read_id_aa64pfr0_el1:; .type read_id_aa64pfr0_el1, %function + mrs x0, id_aa64pfr0_el1 + ret + + + /* ----------------------------------------------------- + * VBAR accessors + * ----------------------------------------------------- + */ +read_vbar:; .type read_vbar, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_vbar_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_vbar_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_vbar_el3 + + +read_vbar_el1:; .type read_vbar_el1, %function + mrs x0, vbar_el1 + ret + + +read_vbar_el2:; .type read_vbar_el2, %function + mrs x0, vbar_el2 + ret + + +read_vbar_el3:; .type read_vbar_el3, %function + mrs x0, vbar_el3 + ret + + +write_vbar:; .type write_vbar, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_vbar_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_vbar_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_vbar_el3 + + +write_vbar_el1:; .type write_vbar_el1, %function + msr vbar_el1, x0 + isb + ret + + +write_vbar_el2:; .type write_vbar_el2, %function + msr vbar_el2, x0 + isb + ret + + +write_vbar_el3:; .type write_vbar_el3, %function + msr vbar_el3, x0 + isb + ret + + + /* ----------------------------------------------------- + * AFSR0 accessors + * ----------------------------------------------------- + */ +read_afsr0:; .type read_afsr0, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_afsr0_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_afsr0_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_afsr0_el3 + + +read_afsr0_el1:; .type read_afsr0_el1, %function + mrs x0, afsr0_el1 + ret + + +read_afsr0_el2:; .type read_afsr0_el2, %function + mrs x0, afsr0_el2 + ret + + +read_afsr0_el3:; .type read_afsr0_el3, %function + mrs x0, afsr0_el3 + ret + + +write_afsr0:; .type write_afsr0, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_afsr0_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_afsr0_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_afsr0_el3 + + +write_afsr0_el1:; .type write_afsr0_el1, %function + msr afsr0_el1, x0 + isb + ret + + +write_afsr0_el2:; .type write_afsr0_el2, %function + msr afsr0_el2, x0 + isb + ret + + +write_afsr0_el3:; .type write_afsr0_el3, %function + msr afsr0_el3, x0 + isb + ret + + + /* ----------------------------------------------------- + * FAR accessors + * ----------------------------------------------------- + */ +read_far:; .type read_far, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_far_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_far_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_far_el3 + + +read_far_el1:; .type read_far_el1, %function + mrs x0, far_el1 + ret + + +read_far_el2:; .type read_far_el2, %function + mrs x0, far_el2 + ret + + +read_far_el3:; .type read_far_el3, %function + mrs x0, far_el3 + ret + + +write_far:; .type write_far, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_far_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_far_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_far_el3 + + +write_far_el1:; .type write_far_el1, %function + msr far_el1, x0 + isb + ret + + +write_far_el2:; .type write_far_el2, %function + msr far_el2, x0 + isb + ret + + +write_far_el3:; .type write_far_el3, %function + msr far_el3, x0 + isb + ret + + + /* ----------------------------------------------------- + * MAIR accessors + * ----------------------------------------------------- + */ +read_mair:; .type read_mair, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_mair_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_mair_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_mair_el3 + + +read_mair_el1:; .type read_mair_el1, %function + mrs x0, mair_el1 + ret + + +read_mair_el2:; .type read_mair_el2, %function + mrs x0, mair_el2 + ret + + +read_mair_el3:; .type read_mair_el3, %function + mrs x0, mair_el3 + ret + + +write_mair:; .type write_mair, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_mair_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_mair_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_mair_el3 + + +write_mair_el1:; .type write_mair_el1, %function + msr mair_el1, x0 + isb + ret + + +write_mair_el2:; .type write_mair_el2, %function + msr mair_el2, x0 + isb + ret + + +write_mair_el3:; .type write_mair_el3, %function + msr mair_el3, x0 + isb + ret + + + /* ----------------------------------------------------- + * AMAIR accessors + * ----------------------------------------------------- + */ +read_amair:; .type read_amair, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_amair_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_amair_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_amair_el3 + + +read_amair_el1:; .type read_amair_el1, %function + mrs x0, amair_el1 + ret + + +read_amair_el2:; .type read_amair_el2, %function + mrs x0, amair_el2 + ret + + +read_amair_el3:; .type read_amair_el3, %function + mrs x0, amair_el3 + ret + + +write_amair:; .type write_amair, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_amair_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_amair_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_amair_el3 + + +write_amair_el1:; .type write_amair_el1, %function + msr amair_el1, x0 + isb + ret + + +write_amair_el2:; .type write_amair_el2, %function + msr amair_el2, x0 + isb + ret + + +write_amair_el3:; .type write_amair_el3, %function + msr amair_el3, x0 + isb + ret + + + /* ----------------------------------------------------- + * RVBAR accessors + * ----------------------------------------------------- + */ +read_rvbar:; .type read_rvbar, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_rvbar_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_rvbar_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_rvbar_el3 + + +read_rvbar_el1:; .type read_rvbar_el1, %function + mrs x0, rvbar_el1 + ret + + +read_rvbar_el2:; .type read_rvbar_el2, %function + mrs x0, rvbar_el2 + ret + + +read_rvbar_el3:; .type read_rvbar_el3, %function + mrs x0, rvbar_el3 + ret + + + /* ----------------------------------------------------- + * RMR accessors + * ----------------------------------------------------- + */ +read_rmr:; .type read_rmr, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_rmr_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_rmr_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_rmr_el3 + + +read_rmr_el1:; .type read_rmr_el1, %function + mrs x0, rmr_el1 + ret + + +read_rmr_el2:; .type read_rmr_el2, %function + mrs x0, rmr_el2 + ret + + +read_rmr_el3:; .type read_rmr_el3, %function + mrs x0, rmr_el3 + ret + + +write_rmr:; .type write_rmr, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_rmr_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_rmr_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_rmr_el3 + + +write_rmr_el1:; .type write_rmr_el1, %function + msr rmr_el1, x0 + isb + ret + + +write_rmr_el2:; .type write_rmr_el2, %function + msr rmr_el2, x0 + isb + ret + + +write_rmr_el3:; .type write_rmr_el3, %function + msr rmr_el3, x0 + isb + ret + + +read_afsr1:; .type read_afsr1, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_afsr1_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_afsr1_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_afsr1_el3 + + + /* ----------------------------------------------------- + * AFSR1 accessors + * ----------------------------------------------------- + */ +read_afsr1_el1:; .type read_afsr1_el1, %function + mrs x0, afsr1_el1 + ret + + +read_afsr1_el2:; .type read_afsr1_el2, %function + mrs x0, afsr1_el2 + ret + + +read_afsr1_el3:; .type read_afsr1_el3, %function + mrs x0, afsr1_el3 + ret + + +write_afsr1:; .type write_afsr1, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_afsr1_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_afsr1_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_afsr1_el3 + + +write_afsr1_el1:; .type write_afsr1_el1, %function + msr afsr1_el1, x0 + isb + ret + + +write_afsr1_el2:; .type write_afsr1_el2, %function + msr afsr1_el2, x0 + isb + ret + + +write_afsr1_el3:; .type write_afsr1_el3, %function + msr afsr1_el3, x0 + isb + ret + + + /* ----------------------------------------------------- + * SCTLR accessors + * ----------------------------------------------------- + */ +read_sctlr:; .type read_sctlr, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_sctlr_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_sctlr_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_sctlr_el3 + + +read_sctlr_el1:; .type read_sctlr_el1, %function + mrs x0, sctlr_el1 + ret + + +read_sctlr_el2:; .type read_sctlr_el2, %function + mrs x0, sctlr_el2 + ret + + +read_sctlr_el3:; .type read_sctlr_el3, %function + mrs x0, sctlr_el3 + ret + + +write_sctlr:; .type write_sctlr, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_sctlr_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_sctlr_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_sctlr_el3 + + +write_sctlr_el1:; .type write_sctlr_el1, %function + msr sctlr_el1, x0 + dsb sy + isb + ret + + +write_sctlr_el2:; .type write_sctlr_el2, %function + msr sctlr_el2, x0 + dsb sy + isb + ret + + +write_sctlr_el3:; .type write_sctlr_el3, %function + msr sctlr_el3, x0 + dsb sy + isb + ret + + + /* ----------------------------------------------------- + * ACTLR accessors + * ----------------------------------------------------- + */ +read_actlr:; .type read_actlr, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_actlr_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_actlr_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_actlr_el3 + + +read_actlr_el1:; .type read_actlr_el1, %function + mrs x0, actlr_el1 + ret + + +read_actlr_el2:; .type read_actlr_el2, %function + mrs x0, actlr_el2 + ret + + +read_actlr_el3:; .type read_actlr_el3, %function + mrs x0, actlr_el3 + ret + + +write_actlr:; .type write_actlr, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_actlr_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_actlr_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_actlr_el3 + + +write_actlr_el1:; .type write_actlr_el1, %function + msr actlr_el1, x0 + dsb sy + isb + ret + + +write_actlr_el2:; .type write_actlr_el2, %function + msr actlr_el2, x0 + dsb sy + isb + ret + + +write_actlr_el3:; .type write_actlr_el3, %function + msr actlr_el3, x0 + dsb sy + isb + ret + + + /* ----------------------------------------------------- + * ESR accessors + * ----------------------------------------------------- + */ +read_esr:; .type read_esr, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_esr_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_esr_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_esr_el3 + + +read_esr_el1:; .type read_esr_el1, %function + mrs x0, esr_el1 + ret + + +read_esr_el2:; .type read_esr_el2, %function + mrs x0, esr_el2 + ret + + +read_esr_el3:; .type read_esr_el3, %function + mrs x0, esr_el3 + ret + + +write_esr:; .type write_esr, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_esr_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_esr_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_esr_el3 + + +write_esr_el1:; .type write_esr_el1, %function + msr esr_el1, x0 + dsb sy + isb + ret + + +write_esr_el2:; .type write_esr_el2, %function + msr esr_el2, x0 + dsb sy + isb + ret + + +write_esr_el3:; .type write_esr_el3, %function + msr esr_el3, x0 + dsb sy + isb + ret + + + /* ----------------------------------------------------- + * TCR accessors + * ----------------------------------------------------- + */ +read_tcr:; .type read_tcr, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_tcr_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_tcr_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_tcr_el3 + + +read_tcr_el1:; .type read_tcr_el1, %function + mrs x0, tcr_el1 + ret + + +read_tcr_el2:; .type read_tcr_el2, %function + mrs x0, tcr_el2 + ret + + +read_tcr_el3:; .type read_tcr_el3, %function + mrs x0, tcr_el3 + ret + + +write_tcr:; .type write_tcr, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_tcr_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_tcr_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_tcr_el3 + + +write_tcr_el1:; .type write_tcr_el1, %function + msr tcr_el1, x0 + dsb sy + isb + ret + + +write_tcr_el2:; .type write_tcr_el2, %function + msr tcr_el2, x0 + dsb sy + isb + ret + + +write_tcr_el3:; .type write_tcr_el3, %function + msr tcr_el3, x0 + dsb sy + isb + ret + + + /* ----------------------------------------------------- + * CPTR accessors + * ----------------------------------------------------- + */ +read_cptr:; .type read_cptr, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_cptr_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_cptr_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_cptr_el3 + + +read_cptr_el1:; .type read_cptr_el1, %function + b read_cptr_el1 + ret + + +read_cptr_el2:; .type read_cptr_el2, %function + mrs x0, cptr_el2 + ret + + +read_cptr_el3:; .type read_cptr_el3, %function + mrs x0, cptr_el3 + ret + + +write_cptr:; .type write_cptr, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_cptr_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_cptr_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_cptr_el3 + + +write_cptr_el1:; .type write_cptr_el1, %function + b write_cptr_el1 + + +write_cptr_el2:; .type write_cptr_el2, %function + msr cptr_el2, x0 + dsb sy + isb + ret + + +write_cptr_el3:; .type write_cptr_el3, %function + msr cptr_el3, x0 + dsb sy + isb + ret + + + /* ----------------------------------------------------- + * TTBR0 accessors + * ----------------------------------------------------- + */ +read_ttbr0:; .type read_ttbr0, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_ttbr0_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_ttbr0_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_ttbr0_el3 + + +read_ttbr0_el1:; .type read_ttbr0_el1, %function + mrs x0, ttbr0_el1 + ret + + +read_ttbr0_el2:; .type read_ttbr0_el2, %function + mrs x0, ttbr0_el2 + ret + + +read_ttbr0_el3:; .type read_ttbr0_el3, %function + mrs x0, ttbr0_el3 + ret + + +write_ttbr0:; .type write_ttbr0, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_ttbr0_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_ttbr0_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_ttbr0_el3 + + +write_ttbr0_el1:; .type write_ttbr0_el1, %function + msr ttbr0_el1, x0 + isb + ret + + +write_ttbr0_el2:; .type write_ttbr0_el2, %function + msr ttbr0_el2, x0 + isb + ret + + +write_ttbr0_el3:; .type write_ttbr0_el3, %function + msr ttbr0_el3, x0 + isb + ret + + + /* ----------------------------------------------------- + * TTBR1 accessors + * ----------------------------------------------------- + */ +read_ttbr1:; .type read_ttbr1, %function + mrs x0, CurrentEl + cmp x0, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq read_ttbr1_el1 + cmp x0, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq read_ttbr1_el2 + cmp x0, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq read_ttbr1_el3 + + +read_ttbr1_el1:; .type read_ttbr1_el1, %function + mrs x0, ttbr1_el1 + ret + + +read_ttbr1_el2:; .type read_ttbr1_el2, %function + b read_ttbr1_el2 + + +read_ttbr1_el3:; .type read_ttbr1_el3, %function + b read_ttbr1_el3 + + +write_ttbr1:; .type write_ttbr1, %function + mrs x1, CurrentEl + cmp x1, #(MODE_EL1 << MODE_EL_SHIFT) + b.eq write_ttbr1_el1 + cmp x1, #(MODE_EL2 << MODE_EL_SHIFT) + b.eq write_ttbr1_el2 + cmp x1, #(MODE_EL3 << MODE_EL_SHIFT) + b.eq write_ttbr1_el3 + + +write_ttbr1_el1:; .type write_ttbr1_el1, %function + msr ttbr1_el1, x0 + isb + ret + + +write_ttbr1_el2:; .type write_ttbr1_el2, %function + b write_ttbr1_el2 + + +write_ttbr1_el3:; .type write_ttbr1_el3, %function + b write_ttbr1_el3 + + +read_hcr:; .type read_hcr, %function + mrs x0, hcr_el2 + ret + + +write_hcr:; .type write_hcr, %function + msr hcr_el2, x0 + dsb sy + isb + ret + + +read_cpacr:; .type read_cpacr, %function + mrs x0, cpacr_el1 + ret + + +write_cpacr:; .type write_cpacr, %function + msr cpacr_el1, x0 + ret + + +read_cntfrq_el0:; .type read_cntfrq_el0, %function + mrs x0, cntfrq_el0 + ret + + +write_cntfrq_el0:; .type write_cntfrq_el0, %function + msr cntfrq_el0, x0 + ret + + +read_cpuectlr:; .type read_cpuectlr, %function + mrs x0, CPUECTLR_EL1 + ret + + +write_cpuectlr:; .type write_cpuectlr, %function + msr CPUECTLR_EL1, x0 + dsb sy + isb + ret + + +read_cnthctl_el2:; .type read_cnthctl_el2, %function + mrs x0, cnthctl_el2 + ret + + +write_cnthctl_el2:; .type write_cnthctl_el2, %function + msr cnthctl_el2, x0 + ret + + +read_cntfrq:; .type read_cntfrq, %function + mrs x0, cntfrq_el0 + ret + + +write_cntfrq:; .type write_cntfrq, %function + msr cntfrq_el0, x0 + ret + + +write_scr:; .type write_scr, %function + msr scr_el3, x0 + dsb sy + isb + ret + + +read_scr:; .type read_scr, %function + mrs x0, scr_el3 + ret + + +read_midr:; .type read_midr, %function + mrs x0, midr_el1 + ret + + +read_mpidr:; .type read_mpidr, %function + mrs x0, mpidr_el1 + ret + + +#if SUPPORT_VFP +enable_vfp:; .type enable_vfp, %function + mrs x0, cpacr_el1 + orr x0, x0, #CPACR_VFP_BITS + msr cpacr_el1, x0 + mrs x0, cptr_el3 + mov x1, #AARCH64_CPTR_TFP + bic x0, x0, x1 + msr cptr_el3, x0 + ret + + + // int read_fpexc(void) +read_fpexc:; .type read_fpexc, %function + b read_fpexc + ret + + + // void write_fpexc(int fpexc) +write_fpexc:; .type write_fpexc, %function + b write_fpexc + ret + +#endif |