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update sources to v12.2.3
[ceph.git] / ceph / src / boost / libs / context / src / asm / make_x86_64_ms_pe_gas.asm
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7c673cae
FG		 1/*
2 Copyright Oliver Kowalke 2009.
3 Copyright Thomas Sailer 2013.
4 Distributed under the Boost Software License, Version 1.0.
5 (See accompanying file LICENSE_1_0.txt or copy at
6 http://www.boost.org/LICENSE_1_0.txt)
7*/
8
b32b8144
FG		 9/*************************************************************************************
10* ---------------------------------------------------------------------------------- *
11* | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | *
12* ---------------------------------------------------------------------------------- *
13* | 0x0 | 0x4 | 0x8 | 0xc | 0x10 | 0x14 | 0x18 | 0x1c | *
14* ---------------------------------------------------------------------------------- *
15* | SEE registers (XMM6-XMM15) | *
16* ---------------------------------------------------------------------------------- *
17* ---------------------------------------------------------------------------------- *
18* | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | *
19* ---------------------------------------------------------------------------------- *
20* | 0x20 | 0x24 | 0x28 | 0x2c | 0x30 | 0x34 | 0x38 | 0x3c | *
21* ---------------------------------------------------------------------------------- *
22* | SEE registers (XMM6-XMM15) | *
23* ---------------------------------------------------------------------------------- *
24* ---------------------------------------------------------------------------------- *
25* | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | *
26* ---------------------------------------------------------------------------------- *
27* | 0xe40 | 0x44 | 0x48 | 0x4c | 0x50 | 0x54 | 0x58 | 0x5c | *
28* ---------------------------------------------------------------------------------- *
29* | SEE registers (XMM6-XMM15) | *
30* ---------------------------------------------------------------------------------- *
31* ---------------------------------------------------------------------------------- *
32* | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | *
33* ---------------------------------------------------------------------------------- *
34* | 0x60 | 0x64 | 0x68 | 0x6c | 0x70 | 0x74 | 0x78 | 0x7c | *
35* ---------------------------------------------------------------------------------- *
36* | SEE registers (XMM6-XMM15) | *
37* ---------------------------------------------------------------------------------- *
38* ---------------------------------------------------------------------------------- *
39* | 32 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | *
40* ---------------------------------------------------------------------------------- *
41* | 0x80 | 0x84 | 0x88 | 0x8c | 0x90 | 0x94 | 0x98 | 0x9c | *
42* ---------------------------------------------------------------------------------- *
43* | SEE registers (XMM6-XMM15) | *
44* ---------------------------------------------------------------------------------- *
45* ---------------------------------------------------------------------------------- *
46* | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | *
47* ---------------------------------------------------------------------------------- *
48* | 0xa0 | 0xa4 | 0xa8 | 0xac | 0xb0 | 0xb4 | 0xb8 | 0xbc | *
49* ---------------------------------------------------------------------------------- *
50* | fc_mxcsr|fc_x87_cw| <alignment> | fbr_strg | fc_dealloc | *
51* ---------------------------------------------------------------------------------- *
52* ---------------------------------------------------------------------------------- *
53* | 47 | 48 | 49 | 50 | 51 | 52 | 53 | 54 | *
54* ---------------------------------------------------------------------------------- *
55* | 0xc0 | 0xc4 | 0xc8 | 0xcc | 0xd0 | 0xd4 | 0xd8 | 0xdc | *
56* ---------------------------------------------------------------------------------- *
57* | limit | base | R12 | R13 | *
58* ---------------------------------------------------------------------------------- *
59* ---------------------------------------------------------------------------------- *
60* | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | *
61* ---------------------------------------------------------------------------------- *
62* | 0xe0 | 0xe4 | 0xe8 | 0xec | 0xf0 | 0xf4 | 0xf8 | 0xfc | *
63* ---------------------------------------------------------------------------------- *
64* | R14 | R15 | RDI | RSI | *
65* ---------------------------------------------------------------------------------- *
66* ---------------------------------------------------------------------------------- *
67* | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | *
68* ---------------------------------------------------------------------------------- *
69* | 0x100 | 0x104 | 0x108 | 0x10c | 0x110 | 0x114 | 0x118 | 0x11c | *
70* ---------------------------------------------------------------------------------- *
71* | RBX | RBP | hidden | RIP | *
72* ---------------------------------------------------------------------------------- *
73* ---------------------------------------------------------------------------------- *
74* | 71 | 72 | 73 | 74 | 75 | 76 | 77 | 78 | *
75* ---------------------------------------------------------------------------------- *
76* | 0x120 | 0x124 | 0x128 | 0x12c | 0x130 | 0x134 | 0x138 | 0x13c | *
77* ---------------------------------------------------------------------------------- *
78* | parameter area | *
79* ---------------------------------------------------------------------------------- *
80* ---------------------------------------------------------------------------------- *
81* | 79 | 80 | 81 | 82 | 83 | 84 | 85 | 86 | *
82* ---------------------------------------------------------------------------------- *
83* | 0x140 | 0x144 | 0x148 | 0x14c | 0x150 | 0x154 | 0x158 | 0x15c | *
84* ---------------------------------------------------------------------------------- *
85* | FCTX | DATA | | *
86* ---------------------------------------------------------------------------------- *
87**************************************************************************************/
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FG		 88
89.file "make_x86_64_ms_pe_gas.asm"
90.text
91.p2align 4,,15
92.globl make_fcontext
93.def make_fcontext; .scl 2; .type 32; .endef
94.seh_proc make_fcontext
95make_fcontext:
96.seh_endprologue
97
98 /* first arg of make_fcontext() == top of context-stack */
99 movq %rcx, %rax
100
101 /* shift address in RAX to lower 16 byte boundary */
102 /* == pointer to fcontext_t and address of context stack */
103 andq $-16, %rax
104
105 /* reserve space for context-data on context-stack */
106 /* on context-function entry: (RSP -0x8) % 16 == 0 */
b32b8144 107 leaq -0x150(%rax), %rax
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FG		 108
109 /* third arg of make_fcontext() == address of context-function */
b32b8144 110 movq %r8, 0x100(%rax)
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FG		 111
112 /* first arg of make_fcontext() == top of context-stack */
113 /* save top address of context stack as 'base' */
b32b8144 114 movq %rcx, 0xc8(%rax)
7c673cae
FG		 115 /* second arg of make_fcontext() == size of context-stack */
116 /* negate stack size for LEA instruction (== substraction) */
117 negq %rdx
118 /* compute bottom address of context stack (limit) */
119 leaq (%rcx,%rdx), %rcx
120 /* save bottom address of context stack as 'limit' */
b32b8144 121 movq %rcx, 0xc0(%rax)
7c673cae 122 /* save address of context stack limit as 'dealloction stack' */
b32b8144 123 movq %rcx, 0xb8(%rax)
7c673cae
FG		 124 /* set fiber-storage to zero */
125 xorq %rcx, %rcx
b32b8144
FG		 126 movq %rcx, 0xb0(%rax)
127
128 /* save MMX control- and status-word */
129 stmxcsr 0xa0(%rax)
130 /* save x87 control-word */
131 fnstcw 0xa4(%rax)
7c673cae
FG		 132
133 /* compute address of transport_t */
b32b8144 134 leaq 0x140(%rax), %rcx
7c673cae 135 /* store address of transport_t in hidden field */
b32b8144
FG		 136 movq %rcx, 0x110(%rax)
137
138 /* compute abs address of label trampoline */
139 leaq trampoline(%rip), %rcx
140 /* save address of finish as return-address for context-function */
141 /* will be entered after jump_fcontext() first time */
142 movq %rcx, 0x118(%rax)
7c673cae
FG		 143
144 /* compute abs address of label finish */
145 leaq finish(%rip), %rcx
146 /* save address of finish as return-address for context-function */
147 /* will be entered after context-function returns */
b32b8144 148 movq %rcx, 0x108(%rax)
7c673cae
FG		 149
150 ret /* return pointer to context-data */
151
b32b8144
FG		 152trampoline:
153 /* store return address on stack */
154 /* fix stack alignment */
155 pushq %rbp
156 /* jump to context-function */
157 jmp *%rbx
158
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FG		 159finish:
160 /* 32byte shadow-space for _exit() */
161 andq $-32, %rsp
162 /* 32byte shadow-space for _exit() are */
163 /* already reserved by make_fcontext() */
164 /* exit code is zero */
165 xorq %rcx, %rcx
166 /* exit application */
167 call _exit
168 hlt
169.seh_endproc
170
171.def _exit; .scl 2; .type 32; .endef /* standard C library function */
172
173.section .drectve
174.ascii " -export:\"make_fcontext\""
Ceph