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53 lines
2 KiB
ArmAsm
53 lines
2 KiB
ArmAsm
/* libunwind - a platform-independent unwind library
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Copyright (C) 2008 Google, Inc
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Contributed by Paul Pluzhnikov <ppluzhnikov@google.com>
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Copyright (C) 2010 Konstantin Belousov <kib@freebsd.org>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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#include "offsets.h"
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/* int _Uaarch64_getcontext_trace (unw_tdep_context_t *ucp)
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Saves limited machine context in UCP necessary for fast trace. If fast trace
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fails, caller will have to get the full context.
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*/
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.global _Uaarch64_getcontext_trace
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.hidden _Uaarch64_getcontext_trace
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.type _Uaarch64_getcontext_trace, @function
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_Uaarch64_getcontext_trace:
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.cfi_startproc
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/* Save only FP, SP, PC - exclude this call. */
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str x29, [x0, #(LINUX_UC_MCONTEXT_OFF + LINUX_SC_X29_OFF)]
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mov x9, sp
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str x9, [x0, #(LINUX_UC_MCONTEXT_OFF + LINUX_SC_SP_OFF)]
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str x30, [x0, #(LINUX_UC_MCONTEXT_OFF + LINUX_SC_PC_OFF)]
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ret
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.cfi_endproc
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.size _Uaarch64_getcontext_trace, . - _Uaarch64_getcontext_trace
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/* We do not need executable stack. */
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.section .note.GNU-stack,"",@progbits
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