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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* This is file is a merger of SETJMP.S and LONGJMP.S */ |
| 2 | /* |
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| 3 | * This file was modified to use the __USER_LABEL_PREFIX__ and |
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| 4 | * __REGISTER_PREFIX__ macros defined by later versions of GNU cpp by |
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| 5 | * Joel Sherrill (joel@OARcorp.com) |
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| 6 | * Slight change: now includes i386mach.h for this (Werner Almesberger) |
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| 7 | * |
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| 8 | * Copyright (C) 1991 DJ Delorie |
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| 9 | * All rights reserved. |
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| 10 | * |
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| 11 | * Redistribution and use in source and binary forms is permitted |
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| 12 | * provided that the above copyright notice and following paragraph are |
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| 13 | * duplicated in all such forms. |
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| 14 | * |
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| 15 | * This file is distributed WITHOUT ANY WARRANTY; without even the implied |
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| 16 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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| 17 | */ |
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| 18 | |||
| 19 | /* |
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| 20 | ** jmp_buf: |
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| 21 | ** eax ebx ecx edx esi edi ebp esp eip |
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| 22 | ** 0 4 8 12 16 20 24 28 32 |
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| 23 | */ |
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| 24 | |||
| 25 | #include "i386mach.h" |
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| 26 | |||
| 27 | .global SYM (setjmp) |
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| 28 | .global SYM (longjmp) |
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| 29 | SOTYPE_FUNCTION(setjmp) |
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| 30 | SOTYPE_FUNCTION(longjmp) |
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| 31 | |||
| 32 | .def _setjmp; .scl 2; .type 32; .endef |
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| 33 | |||
| 34 | SYM (setjmp): |
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| 35 | |||
| 36 | pushl ebp |
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| 37 | movl esp,ebp |
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| 38 | |||
| 39 | pushl edi |
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| 40 | movl 8 (ebp),edi |
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| 41 | |||
| 42 | movl eax,0 (edi) |
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| 43 | movl ebx,4 (edi) |
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| 44 | movl ecx,8 (edi) |
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| 45 | movl edx,12 (edi) |
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| 46 | movl esi,16 (edi) |
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| 47 | |||
| 48 | movl -4 (ebp),eax |
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| 49 | movl eax,20 (edi) |
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| 50 | |||
| 51 | movl 0 (ebp),eax |
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| 52 | movl eax,24 (edi) |
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| 53 | |||
| 54 | movl esp,eax |
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| 55 | addl $12,eax |
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| 56 | movl eax,28 (edi) |
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| 57 | |||
| 58 | movl 4 (ebp),eax |
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| 59 | movl eax,32 (edi) |
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| 60 | |||
| 61 | popl edi |
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| 62 | movl $0,eax |
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| 63 | leave |
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| 64 | ret |
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| 65 | |||
| 66 | .def _longjmp; .scl 2; .type 32; .endef |
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| 67 | |||
| 68 | SYM (longjmp): |
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| 69 | pushl ebp |
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| 70 | movl esp,ebp |
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| 71 | |||
| 72 | movl 8(ebp),edi /* get jmp_buf */ |
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| 73 | movl 12(ebp),eax /* store retval in j->eax */ |
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| 74 | movl eax,0(edi) |
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| 75 | |||
| 76 | movl 24(edi),ebp |
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| 77 | |||
| 78 | movl 28(edi),esp |
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| 79 | |||
| 80 | pushl 32(edi) |
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| 81 | |||
| 82 | movl 0(edi),eax |
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| 83 | movl 4(edi),ebx |
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| 84 | movl 8(edi),ecx |
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| 85 | movl 12(edi),edx |
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| 86 | movl 16(edi),esi |
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| 87 | movl 20(edi),edi |
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| 88 | |||
| 89 | ret |