| /* |
| * (C) Copyright 2013 |
| * David Feng <fenghua@phytium.com.cn> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <asm-offsets.h> |
| #include <config.h> |
| #include <asm/ptrace.h> |
| #include <asm/macro.h> |
| #include <linux/linkage.h> |
| |
| /* |
| * Enter Exception. |
| * This will save the processor state that is ELR/X0~X30 |
| * to the stack frame. |
| */ |
| .macro exception_entry |
| stp x29, x30, [sp, #-16]! |
| stp x27, x28, [sp, #-16]! |
| stp x25, x26, [sp, #-16]! |
| stp x23, x24, [sp, #-16]! |
| stp x21, x22, [sp, #-16]! |
| stp x19, x20, [sp, #-16]! |
| stp x17, x18, [sp, #-16]! |
| stp x15, x16, [sp, #-16]! |
| stp x13, x14, [sp, #-16]! |
| stp x11, x12, [sp, #-16]! |
| stp x9, x10, [sp, #-16]! |
| stp x7, x8, [sp, #-16]! |
| stp x5, x6, [sp, #-16]! |
| stp x3, x4, [sp, #-16]! |
| stp x1, x2, [sp, #-16]! |
| |
| /* Could be running at EL3/EL2/EL1 */ |
| switch_el x11, 3f, 2f, 1f |
| 3: mrs x1, esr_el3 |
| mrs x2, elr_el3 |
| b 0f |
| 2: mrs x1, esr_el2 |
| mrs x2, elr_el2 |
| b 0f |
| 1: mrs x1, esr_el1 |
| mrs x2, elr_el1 |
| 0: |
| stp x2, x0, [sp, #-16]! |
| mov x0, sp |
| .endm |
| |
| /* |
| * Exception vectors. |
| */ |
| .align 11 |
| .globl vectors |
| vectors: |
| .align 7 |
| b _do_bad_sync /* Current EL Synchronous Thread */ |
| |
| .align 7 |
| b _do_bad_irq /* Current EL IRQ Thread */ |
| |
| .align 7 |
| b _do_bad_fiq /* Current EL FIQ Thread */ |
| |
| .align 7 |
| b _do_bad_error /* Current EL Error Thread */ |
| |
| .align 7 |
| b _do_sync /* Current EL Synchronous Handler */ |
| |
| .align 7 |
| b _do_irq /* Current EL IRQ Handler */ |
| |
| .align 7 |
| b _do_fiq /* Current EL FIQ Handler */ |
| |
| .align 7 |
| b _do_error /* Current EL Error Handler */ |
| |
| |
| _do_bad_sync: |
| exception_entry |
| bl do_bad_sync |
| b exception_exit |
| |
| _do_bad_irq: |
| exception_entry |
| bl do_bad_irq |
| b exception_exit |
| |
| _do_bad_fiq: |
| exception_entry |
| bl do_bad_fiq |
| b exception_exit |
| |
| _do_bad_error: |
| exception_entry |
| bl do_bad_error |
| b exception_exit |
| |
| _do_sync: |
| exception_entry |
| bl do_sync |
| b exception_exit |
| |
| _do_irq: |
| exception_entry |
| bl do_irq |
| b exception_exit |
| |
| _do_fiq: |
| exception_entry |
| bl do_fiq |
| b exception_exit |
| |
| _do_error: |
| exception_entry |
| bl do_error |
| b exception_exit |
| |
| exception_exit: |
| ldp x2, x0, [sp],#16 |
| switch_el x11, 3f, 2f, 1f |
| 3: msr elr_el3, x2 |
| b 0f |
| 2: msr elr_el2, x2 |
| b 0f |
| 1: msr elr_el1, x2 |
| 0: |
| ldp x1, x2, [sp],#16 |
| ldp x3, x4, [sp],#16 |
| ldp x5, x6, [sp],#16 |
| ldp x7, x8, [sp],#16 |
| ldp x9, x10, [sp],#16 |
| ldp x11, x12, [sp],#16 |
| ldp x13, x14, [sp],#16 |
| ldp x15, x16, [sp],#16 |
| ldp x17, x18, [sp],#16 |
| ldp x19, x20, [sp],#16 |
| ldp x21, x22, [sp],#16 |
| ldp x23, x24, [sp],#16 |
| ldp x25, x26, [sp],#16 |
| ldp x27, x28, [sp],#16 |
| ldp x29, x30, [sp],#16 |
| eret |