| 1 | /* |
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| 2 | * setjmp/longjmp for LatticeMico32. |
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| 3 | * Contributed by Jon Beniston <jon@beniston.com> |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * 1. Redistributions of source code must retain the above copyright |
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| 9 | * notice, this list of conditions and the following disclaimer. |
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 11 | * notice, this list of conditions and the following disclaimer in the |
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| 12 | * documentation and/or other materials provided with the distribution. |
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| 13 | * |
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| 14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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| 15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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| 18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 24 | * SUCH DAMAGE. |
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| 25 | */ |
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| 26 | |
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| 27 | .section .text |
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| 28 | .align 4 |
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| 29 | |
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| 30 | .globl setjmp |
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| 31 | .type setjmp,@function |
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| 32 | .globl longjmp |
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| 33 | .type longjmp,@function |
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| 34 | |
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| 35 | /* setjmp: save all callee saves into jmp_buf |
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| 36 | r1 - Address of jmp_buf |
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| 37 | */ |
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| 38 | |
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| 39 | setjmp: |
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| 40 | sw (r1+0), r11 |
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| 41 | sw (r1+4), r12 |
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| 42 | sw (r1+8), r13 |
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| 43 | sw (r1+12), r14 |
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| 44 | sw (r1+16), r15 |
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| 45 | sw (r1+20), r16 |
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| 46 | sw (r1+24), r17 |
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| 47 | sw (r1+28), r18 |
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| 48 | sw (r1+32), r19 |
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| 49 | sw (r1+36), r20 |
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| 50 | sw (r1+40), r21 |
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| 51 | sw (r1+44), r22 |
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| 52 | sw (r1+48), r23 |
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| 53 | sw (r1+52), r24 |
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| 54 | sw (r1+56), r25 |
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| 55 | sw (r1+60), gp |
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| 56 | sw (r1+64), fp |
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| 57 | sw (r1+68), sp |
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| 58 | sw (r1+72), ra |
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| 59 | mvi r1, 0 |
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| 60 | ret |
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| 61 | |
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| 62 | /* longjmp: restore all callee saves from jmp_buf |
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| 63 | r1 - Address of jmb_buf |
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| 64 | r2 - Value to return with |
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| 65 | */ |
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| 66 | |
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| 67 | .global longjmp |
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| 68 | .type longjmp,@function |
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| 69 | .align 4 |
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| 70 | |
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| 71 | longjmp: |
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| 72 | lw r11, (r1+0) |
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| 73 | lw r12, (r1+4) |
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| 74 | lw r13, (r1+8) |
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| 75 | lw r14, (r1+12) |
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| 76 | lw r15, (r1+16) |
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| 77 | lw r16, (r1+20) |
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| 78 | lw r17, (r1+24) |
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| 79 | lw r18, (r1+28) |
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| 80 | lw r19, (r1+32) |
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| 81 | lw r20, (r1+36) |
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| 82 | lw r21, (r1+40) |
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| 83 | lw r22, (r1+44) |
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| 84 | lw r23, (r1+48) |
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| 85 | lw r24, (r1+52) |
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| 86 | lw r25, (r1+56) |
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| 87 | lw gp, (r1+60) |
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| 88 | lw fp, (r1+64) |
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| 89 | lw sp, (r1+68) |
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| 90 | lw ra, (r1+72) |
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| 91 | mv r1, r2 |
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| 92 | ret |
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| 93 | |
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| 94 | |
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