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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Josef Cejka |
2 | * Copyright (c) 2008 Josef Cejka |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup ia32 |
29 | /** @addtogroup ia32 |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #ifndef KERN_ia32_CONTEXT_OFFSET_H_ |
35 | #ifndef KERN_ia32_CONTEXT_OFFSET_H_ |
36 | #define KERN_ia32_CONTEXT_OFFSET_H_ |
36 | #define KERN_ia32_CONTEXT_OFFSET_H_ |
37 | 37 | ||
38 | #define OFFSET_SP 0x0 |
38 | #define OFFSET_SP 0x0 |
39 | #define OFFSET_PC 0x4 |
39 | #define OFFSET_PC 0x4 |
40 | #define OFFSET_EBX 0x8 |
40 | #define OFFSET_EBX 0x8 |
41 | #define OFFSET_ESI 0xC |
41 | #define OFFSET_ESI 0xC |
42 | #define OFFSET_EDI 0x10 |
42 | #define OFFSET_EDI 0x10 |
43 | #define OFFSET_EBP 0x14 |
43 | #define OFFSET_EBP 0x14 |
44 | 44 | ||
45 | #ifdef KERNEL |
45 | #ifdef KERNEL |
46 | # define OFFSET_IPL 0x18 |
46 | # define OFFSET_IPL 0x18 |
47 | #else |
47 | #else |
48 | # define OFFSET_TLS 0x18 |
48 | # define OFFSET_TLS 0x18 |
49 | #endif |
49 | #endif |
50 | 50 | ||
51 | 51 | ||
52 | #ifdef __ASM__ |
52 | #ifdef __ASM__ |
53 | 53 | ||
54 | # ctx: address of the structure with saved context |
54 | # ctx: address of the structure with saved context |
55 | # pc: return address |
55 | # pc: return address |
56 | 56 | ||
57 | .macro CONTEXT_SAVE_ARCH_CORE ctx:req pc:req |
57 | .macro CONTEXT_SAVE_ARCH_CORE ctx:req pc:req |
58 | movl %esp,OFFSET_SP(\ctx) # %esp -> ctx->sp |
58 | movl %esp,OFFSET_SP(\ctx) # %esp -> ctx->sp |
59 | movl \pc,OFFSET_PC(\ctx) # %eip -> ctx->pc |
59 | movl \pc,OFFSET_PC(\ctx) # %eip -> ctx->pc |
60 | movl %ebx,OFFSET_EBX(\ctx) # %ebx -> ctx->ebx |
60 | movl %ebx,OFFSET_EBX(\ctx) # %ebx -> ctx->ebx |
61 | movl %esi,OFFSET_ESI(\ctx) # %esi -> ctx->esi |
61 | movl %esi,OFFSET_ESI(\ctx) # %esi -> ctx->esi |
62 | movl %edi,OFFSET_EDI(\ctx) # %edi -> ctx->edi |
62 | movl %edi,OFFSET_EDI(\ctx) # %edi -> ctx->edi |
63 | movl %ebp,OFFSET_EBP(\ctx) # %ebp -> ctx->ebp |
63 | movl %ebp,OFFSET_EBP(\ctx) # %ebp -> ctx->ebp |
64 | .endm |
64 | .endm |
65 | 65 | ||
66 | # ctx: address of the structure with saved context |
66 | # ctx: address of the structure with saved context |
67 | 67 | ||
68 | .macro CONTEXT_RESTORE_ARCH_CORE ctx:req pc:req |
68 | .macro CONTEXT_RESTORE_ARCH_CORE ctx:req pc:req |
69 | movl OFFSET_SP(\ctx),%esp # ctx->sp -> %esp |
69 | movl OFFSET_SP(\ctx),%esp # ctx->sp -> %esp |
70 | movl OFFSET_PC(\ctx),\pc # ctx->pc -> \pc |
70 | movl OFFSET_PC(\ctx),\pc # ctx->pc -> \pc |
71 | movl OFFSET_EBX(\ctx),%ebx # ctx->ebx -> %ebx |
71 | movl OFFSET_EBX(\ctx),%ebx # ctx->ebx -> %ebx |
72 | movl OFFSET_ESI(\ctx),%esi # ctx->esi -> %esi |
72 | movl OFFSET_ESI(\ctx),%esi # ctx->esi -> %esi |
73 | movl OFFSET_EDI(\ctx),%edi # ctx->edi -> %edi |
73 | movl OFFSET_EDI(\ctx),%edi # ctx->edi -> %edi |
74 | movl OFFSET_EBP(\ctx),%ebp # ctx->ebp -> %ebp |
74 | movl OFFSET_EBP(\ctx),%ebp # ctx->ebp -> %ebp |
75 | .endm |
75 | .endm |
76 | 76 | ||
77 | #endif /* __ASM__ */ |
77 | #endif /* __ASM__ */ |
78 | 78 | ||
79 | #endif |
79 | #endif |
80 | 80 | ||
81 | /** @} |
81 | /** @} |
82 | */ |
82 | */ |
83 | 83 | ||
84 | 84 |