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96 lines
2.1 KiB
ArmAsm
96 lines
2.1 KiB
ArmAsm
/*
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* Copyright (C) 2013, 2014 Ludwig Knüpfer <ludwig.knuepfer@fu-berlin.de>
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* Copyright (C) 2014 Thomas Eichinger <thomas.eichinger1@gmail.com>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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.text
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#ifdef __arm__
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.globl _native_sig_leave_tramp
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_native_sig_leave_tramp:
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/* save _native_saved_eip and registers */
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stmdb sp!, {r0}
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ldr r0, =_native_saved_eip
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ldr r0, [r0]
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stmdb sp!, {r0-r12}
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stmdb sp!, {lr}
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/* exchange r0 and _native_saved_eip */
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ldr r0, [sp,#56]
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ldr r1, [sp,#4 ]
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str r0, [sp,#4 ]
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str r1, [sp,#56]
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/* call swapcontext ( _native_cur_ctx, _native_isr_ctx ) */
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ldr r2, =_native_cur_ctx
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ldr r0, [r2]
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ldr r2, =_native_isr_ctx
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ldr r1, [r2]
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bl swapcontext
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/* reeanble interrupts */
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bl irq_enable
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/* _native_in_isr = 0 */
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eor r0, r0, r0
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ldr r2, =_native_in_isr
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str r0, [r2]
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/* restore registers, jump to (saved) _native_saved_eip */
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ldmia sp!, {lr}
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ldmia sp!, {r0-r12}
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ldmia sp!, {pc}
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.globl _native_sig_leave_handler
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_native_sig_leave_handler:
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stmdb sp!, {r0}
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ldr r0, =_native_saved_eip
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ldr r0, [r0]
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stmdb sp!, {r0-r12}
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stmdb sp!, {lr}
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/* exchange r0 and _native_saved_eip */
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ldr r0, [sp,#56]
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ldr r1, [sp,#4 ]
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str r0, [sp,#4 ]
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str r1, [sp,#56]
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/* _native_in_isr = 0 */
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eor r0, r0, r0
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ldr r1, =_native_in_isr
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str r0, [r1]
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ldmia sp!, {lr}
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ldmia sp!, {r0-r12}
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ldmia sp!, {pc}
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#else
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.globl _native_sig_leave_tramp
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_native_sig_leave_tramp:
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pushl _native_saved_eip
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pushfl
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pushal
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pushl _native_isr_ctx
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pushl _native_cur_ctx
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call swapcontext
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addl $8, %esp
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call irq_enable
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movl $0x0, _native_in_isr
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popal
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popfl
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ret
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.globl _native_sig_leave_handler
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_native_sig_leave_handler:
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pushl _native_saved_eip
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movl $0x0, _native_in_isr
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ret
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#endif
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