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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.17.0/] [newlib/] [libc/] [machine/] [or32/] [setjmp.S] - Blame information for rev 194

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1 194 jeremybenn 
/* setjmp.S. Implementation of setjmp.
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   Copyright (C) 2010, Embecosm Limited
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   Contributor Jeremy Bennett
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   This file is part of Newlib.
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   This program is free software; you can redistribute it and/or modify it
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   under the terms of the GNU General Public License as published by the Free
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   Software Foundation; either version 3 of the License, or (at your option)
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   any later version.
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   This program is distributed in the hope that it will be useful, but WITHOUT
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   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
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   more details.
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   You should have received a copy of the GNU General Public License along
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   with this program.  If not, see .            */
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/* -------------------------------------------------------------------------- */
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/* This program is commented throughout in a fashion suitable for processing
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   with Doxygen.                                                              */
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/* -------------------------------------------------------------------------- */
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/* -------------------------------------------------------------------------- */
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/*!_setjmp
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   All processor state is saved in the buffer provided. We need not save r0
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   (it will always be zero) and we need not save r11 (it will always be
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   overridden here, and in _longjmp).
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   @todo We should prefer to save and restore the status register, but this is
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         not directly possible in user code. There is some merit in code to
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         set the flag, since in compiled C code, that might be expected to hold
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         a value. We leave a space for this information for future enhancement.
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   @param[out] env(r3)  A buffer to save all the current processor state.
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   @return  zero.
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/* -------------------------------------------------------------------------- */
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        .align  4
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        .global _setjmp
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        .type   _setjmp,@function
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_setjmp:
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        l.sw    4(r3),r1                /* Slot 0 saved for flag in future */
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        l.sw    8(r3),r2
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        l.sw    12(r3),r3
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        l.sw    16(r3),r4
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        l.sw    20(r3),r5
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        l.sw    24(r3),r6
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        l.sw    28(r3),r7
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        l.sw    32(r3),r8
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        l.sw    36(r3),r9
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        l.sw    40(r3),r10              /* Skip r11 */
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        l.sw    44(r3),r12
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        l.sw    48(r3),r13
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        l.sw    52(r3),r14
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        l.sw    56(r3),r15
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        l.sw    60(r3),r16
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        l.sw    64(r3),r17
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        l.sw    68(r3),r18
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        l.sw    72(r3),r19
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        l.sw    76(r3),r20
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        l.sw    80(r3),r21
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        l.sw    84(r3),r22
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        l.sw    88(r3),r23
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        l.sw    92(r3),r24
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        l.sw    96(r3),r25
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        l.sw    100(r3),r26
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        l.sw    104(r3),r27
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        l.sw    108(r3),r28
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        l.sw    112(r3),r29
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        l.sw    116(r3),r30
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        l.sw    120(r3),r31
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        l.jr    r9
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        l.addi  r11,r0,0                /* Zero result */
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        .size   _setjmp, .-_setjmp

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