| 1 | /*
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| 2 | * Copyright (c) 2016 Martin Decky
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| 3 | * All rights reserved.
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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 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | #ifndef LIBC_ARCH_FIBRIL_CONTEXT_H_
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| 30 | #define LIBC_ARCH_FIBRIL_CONTEXT_H_
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| 31 |
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| 32 | #define CONTEXT_OFFSET_SP 0x00
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| 33 | #define CONTEXT_OFFSET_PC 0x08
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| 34 | #define CONTEXT_OFFSET_ZERO 0x10
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| 35 | #define CONTEXT_OFFSET_RA 0x18
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| 36 | #define CONTEXT_OFFSET_X3 0x20
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| 37 | #define CONTEXT_OFFSET_X4 0x28
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| 38 | #define CONTEXT_OFFSET_X5 0x30
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| 39 | #define CONTEXT_OFFSET_X6 0x38
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| 40 | #define CONTEXT_OFFSET_X7 0x40
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| 41 | #define CONTEXT_OFFSET_X8 0x48
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| 42 | #define CONTEXT_OFFSET_X9 0x50
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| 43 | #define CONTEXT_OFFSET_X10 0x58
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| 44 | #define CONTEXT_OFFSET_X11 0x60
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| 45 | #define CONTEXT_OFFSET_X12 0x68
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| 46 | #define CONTEXT_OFFSET_X13 0x70
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| 47 | #define CONTEXT_OFFSET_X14 0x78
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| 48 | #define CONTEXT_OFFSET_X15 0x80
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| 49 | #define CONTEXT_OFFSET_X16 0x88
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| 50 | #define CONTEXT_OFFSET_X17 0x90
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| 51 | #define CONTEXT_OFFSET_X18 0x98
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| 52 | #define CONTEXT_OFFSET_X19 0xa0
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| 53 | #define CONTEXT_OFFSET_X20 0xa8
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| 54 | #define CONTEXT_OFFSET_X21 0xb0
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| 55 | #define CONTEXT_OFFSET_X22 0xb8
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| 56 | #define CONTEXT_OFFSET_X23 0xc0
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| 57 | #define CONTEXT_OFFSET_X24 0xc8
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| 58 | #define CONTEXT_OFFSET_X25 0xd0
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| 59 | #define CONTEXT_OFFSET_X26 0xd8
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| 60 | #define CONTEXT_OFFSET_X27 0xe0
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| 61 | #define CONTEXT_OFFSET_X28 0xe8
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| 62 | #define CONTEXT_OFFSET_X29 0xf0
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| 63 | #define CONTEXT_OFFSET_X30 0xf8
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| 64 | #define CONTEXT_OFFSET_X31 0x100
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| 65 | #define CONTEXT_SIZE 0x108
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| 66 |
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| 67 | #ifndef __ASSEMBLER__
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| 68 |
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| 69 | #include <stddef.h>
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| 70 | #include <stdint.h>
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| 71 |
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| 72 | /*
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| 73 | * There is a room for optimization (we can store just those
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| 74 | * registers that must be preserved during ABI function call).
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| 75 | */
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| 76 |
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| 77 | typedef struct context {
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| 78 | uint64_t sp;
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| 79 | uint64_t pc;
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| 80 | uint64_t zero;
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| 81 | uint64_t ra;
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| 82 | uint64_t x3;
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| 83 | uint64_t x4;
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| 84 | uint64_t x5;
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| 85 | uint64_t x6;
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| 86 | uint64_t x7;
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| 87 | uint64_t x8;
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| 88 | uint64_t x9;
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| 89 | uint64_t x10;
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| 90 | uint64_t x11;
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| 91 | uint64_t x12;
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| 92 | uint64_t x13;
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| 93 | uint64_t x14;
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| 94 | uint64_t x15;
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| 95 | uint64_t x16;
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| 96 | uint64_t x17;
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| 97 | uint64_t x18;
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| 98 | uint64_t x19;
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| 99 | uint64_t x20;
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| 100 | uint64_t x21;
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| 101 | uint64_t x22;
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| 102 | uint64_t x23;
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| 103 | uint64_t x24;
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| 104 | uint64_t x25;
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| 105 | uint64_t x26;
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| 106 | uint64_t x27;
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| 107 | uint64_t x28;
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| 108 | uint64_t x29;
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| 109 | uint64_t x30;
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| 110 | uint64_t x31;
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| 111 | } context_t;
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| 112 |
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| 113 | #endif
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| 114 | #endif
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| 115 |
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