2008-02-05 01:16:37 +01:00
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2008 CodeSourcery
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2012-09-07 11:12:50 +02:00
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Copyright (C) 2012 Tommi Rantala <tt.rantala@gmail.com>
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2008-02-05 01:16:37 +01:00
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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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#include <endian.h>
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.text
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#if _MIPS_SIM == _ABIO32
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# if __BYTE_ORDER == __BIG_ENDIAN
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# define OFFSET 4
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# else
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# define OFFSET 0
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# endif
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# define SREG(X) \
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sw $X, (LINUX_UC_MCONTEXT_GREGS + 8 * X + OFFSET) ($4); \
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sra $1, $X, 31; \
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sw $1, (LINUX_UC_MCONTEXT_GREGS + 8 * X + 4 - OFFSET) ($4)
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2012-09-07 11:12:50 +02:00
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/* Yes, we save the return address to PC. */
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# define SPC \
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sw $31, (LINUX_UC_MCONTEXT_PC + OFFSET) ($4); \
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sra $1, $31, 31; \
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sw $1, (LINUX_UC_MCONTEXT_PC + 4 - OFFSET) ($4)
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2008-02-05 01:16:37 +01:00
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#else
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# define SREG(X) sd $X, (LINUX_UC_MCONTEXT_GREGS + 8 * X) ($4)
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2012-09-07 11:12:50 +02:00
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# define SPC sd $31, (LINUX_UC_MCONTEXT_PC) ($4)
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2008-02-05 01:16:37 +01:00
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#endif
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.global _Umips_getcontext
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.type _Umips_getcontext, %function
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# This is a stub version of getcontext() for MIPS which only stores core
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# registers.
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_Umips_getcontext:
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.set noat
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SREG (1)
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SREG (0)
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SREG (2)
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SREG (3)
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SREG (4)
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SREG (5)
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SREG (6)
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SREG (7)
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SREG (8)
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SREG (9)
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SREG (10)
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SREG (11)
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SREG (12)
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SREG (13)
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SREG (14)
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SREG (15)
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SREG (16)
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SREG (17)
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SREG (18)
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SREG (19)
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SREG (20)
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SREG (21)
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SREG (22)
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SREG (23)
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SREG (24)
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SREG (25)
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SREG (26)
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SREG (27)
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SREG (28)
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SREG (29)
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SREG (30)
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SREG (31)
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2012-09-07 11:12:50 +02:00
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SPC
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2008-02-05 01:16:37 +01:00
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li $2, 0
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j $31
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.size _Umips_getcontext, .-_Umips_getcontext
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