mirror of
https://github.com/RIOT-OS/RIOT.git
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16eff9b6ed
Initial version to test 64 bit compatibility.
Instead of a separate board, the inital version for Linux/x86_64 is enabled
by setting the environment variable `NATIVE_64BIT=y` and compiling as usual.
Not currently implemented:
* Architectures other than x86_64 or operating systems other than Linux
* No FreeBSD support
* No Aarch support
* Rust support for x86_64
154 lines
2.9 KiB
ArmAsm
154 lines
2.9 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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#ifdef __x86_64__
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_native_sig_leave_tramp:
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pushq _native_saved_eip(%rip)
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pushfq
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pushq %rax
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pushq %rcx
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pushq %rdx
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pushq %rbx
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pushq %rbp
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pushq %rsi
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pushq %rdi
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pushq %r8
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pushq %r9
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pushq %r10
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pushq %r11
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pushq %r12
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pushq %r13
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pushq %r14
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pushq %r15
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mov _native_isr_ctx(%rip), %rsi
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mov _native_cur_ctx(%rip), %rdi
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call swapcontext
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call irq_enable
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movl $0x0, _native_in_isr(%rip)
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popq %r15
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popq %r14
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popq %r13
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popq %r12
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popq %r11
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popq %r10
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popq %r9
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popq %r8
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popq %rdi
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popq %rsi
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popq %rbp
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popq %rbx
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popq %rdx
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popq %rcx
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popq %rax
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popfq
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ret
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#else
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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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#endif
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.globl _native_sig_leave_handler
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_native_sig_leave_handler:
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#ifdef __x86_64__
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pushq _native_saved_eip(%rip)
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movl $0x0, _native_in_isr(%rip)
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#else
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pushl _native_saved_eip
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movl $0x0, _native_in_isr
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#endif
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ret
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#endif
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#if defined(__linux__) && defined(__ELF__)
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.section .note.GNU-stack,"",%progbits
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#endif
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