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- /* SPDX-License-Identifier: GPL-2.0+ */
- /*
- * (C) Copyright 2013
- * David Feng <fenghua@phytium.com.cn>
- */
- #include <asm-offsets.h>
- #include <config.h>
- #include <asm/ptrace.h>
- #include <asm/macro.h>
- #include <linux/linkage.h>
- /*
- * Exception vectors.
- */
- .align 11
- .globl vectors
- vectors:
- .align 7 /* Current EL Synchronous Thread */
- stp x29, x30, [sp, #-16]!
- bl _exception_entry
- bl do_bad_sync
- b exception_exit
- .align 7 /* Current EL IRQ Thread */
- stp x29, x30, [sp, #-16]!
- bl _exception_entry
- bl do_bad_irq
- b exception_exit
- .align 7 /* Current EL FIQ Thread */
- stp x29, x30, [sp, #-16]!
- bl _exception_entry
- bl do_bad_fiq
- b exception_exit
- .align 7 /* Current EL Error Thread */
- stp x29, x30, [sp, #-16]!
- bl _exception_entry
- bl do_bad_error
- b exception_exit
- .align 7 /* Current EL Synchronous Handler */
- stp x29, x30, [sp, #-16]!
- bl _exception_entry
- bl do_sync
- b exception_exit
- .align 7 /* Current EL IRQ Handler */
- stp x29, x30, [sp, #-16]!
- bl _exception_entry
- bl do_irq
- b exception_exit
- .align 7 /* Current EL FIQ Handler */
- stp x29, x30, [sp, #-16]!
- bl _exception_entry
- bl do_fiq
- b exception_exit
- .align 7 /* Current EL Error Handler */
- stp x29, x30, [sp, #-16]!
- bl _exception_entry
- bl do_error
- b exception_exit
- /*
- * Enter Exception.
- * This will save the processor state that is ELR/X0~X30
- * to the stack frame.
- */
- _exception_entry:
- 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
- ret
- 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
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