Zephyr Project API 3.7.0
A Scalable Open Source RTOS
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float_regs_x86_gcc.h
Go to the documentation of this file.
1
6/*
7 * Copyright (c) 2015, Wind River Systems, Inc.
8 *
9 * SPDX-License-Identifier: Apache-2.0
10 */
11
12#ifndef _FLOAT_REGS_X86_GCC_H
13#define _FLOAT_REGS_X86_GCC_H
14
15#if !defined(__GNUC__) || !defined(CONFIG_X86)
16#error __FILE__ goes only with x86 GCC
17#endif
18
19#include <zephyr/toolchain.h>
20#include "float_context.h"
21
39static inline void _load_all_float_registers(struct fp_register_set *regs)
40{
41 __asm__ volatile (
42 "movdqu 0(%0), %%xmm0\n\t;"
43 "movdqu 16(%0), %%xmm1\n\t;"
44 "movdqu 32(%0), %%xmm2\n\t;"
45 "movdqu 48(%0), %%xmm3\n\t;"
46 "movdqu 64(%0), %%xmm4\n\t;"
47 "movdqu 80(%0), %%xmm5\n\t;"
48 "movdqu 96(%0), %%xmm6\n\t;"
49 "movdqu 112(%0), %%xmm7\n\t;"
50
51 "fldt 128(%0)\n\t;"
52 "fldt 138(%0)\n\t;"
53 "fldt 148(%0)\n\t;"
54 "fldt 158(%0)\n\t;"
55 "fldt 168(%0)\n\t;"
56 "fldt 178(%0)\n\t;"
57 "fldt 188(%0)\n\t;"
58 "fldt 198(%0)\n\t;"
59
60 : : "r" (regs)
61 );
62}
63
64
82static inline void
83_load_then_store_all_float_registers(struct fp_register_set *regs)
84{
85 __asm__ volatile (
86 "movdqu 0(%0), %%xmm0\n\t;"
87 "movdqu 16(%0), %%xmm1\n\t;"
88 "movdqu 32(%0), %%xmm2\n\t;"
89 "movdqu 48(%0), %%xmm3\n\t;"
90 "movdqu 64(%0), %%xmm4\n\t;"
91 "movdqu 80(%0), %%xmm5\n\t;"
92 "movdqu 96(%0), %%xmm6\n\t;"
93 "movdqu 112(%0), %%xmm7\n\t;"
94
95 "fldt 128(%0)\n\t;"
96 "fldt 138(%0)\n\t;"
97 "fldt 148(%0)\n\t;"
98 "fldt 158(%0)\n\t;"
99 "fldt 168(%0)\n\t;"
100 "fldt 178(%0)\n\t;"
101 "fldt 188(%0)\n\t;"
102 "fldt 198(%0)\n\t;"
103
104 /* pop the x87 FPU registers back to memory */
105
106 "fstpt 198(%0)\n\t;"
107 "fstpt 188(%0)\n\t;"
108 "fstpt 178(%0)\n\t;"
109 "fstpt 168(%0)\n\t;"
110 "fstpt 158(%0)\n\t;"
111 "fstpt 148(%0)\n\t;"
112 "fstpt 138(%0)\n\t;"
113 "fstpt 128(%0)\n\t;"
114
115 : : "r" (regs)
116 );
117}
118
119
131static inline void _store_all_float_registers(struct fp_register_set *regs)
132{
133 __asm__ volatile (
134 "movdqu %%xmm0, 0(%0)\n\t;"
135 "movdqu %%xmm1, 16(%0)\n\t;"
136 "movdqu %%xmm2, 32(%0)\n\t;"
137 "movdqu %%xmm3, 48(%0)\n\t;"
138 "movdqu %%xmm4, 64(%0)\n\t;"
139 "movdqu %%xmm5, 80(%0)\n\t;"
140 "movdqu %%xmm6, 96(%0)\n\t;"
141 "movdqu %%xmm7, 112(%0)\n\t;"
142
143 "fstpt 198(%0)\n\t;"
144 "fstpt 188(%0)\n\t;"
145 "fstpt 178(%0)\n\t;"
146 "fstpt 168(%0)\n\t;"
147 "fstpt 158(%0)\n\t;"
148 "fstpt 148(%0)\n\t;"
149 "fstpt 138(%0)\n\t;"
150 "fstpt 128(%0)\n\t;"
151
152 : : "r" (regs) : "memory"
153 );
154}
155#endif /* _FLOAT_REGS_X86_GCC_H */
float_context.h
common definitions for the FPU sharing test application
fp_register_set
Definition float_context.h:192
toolchain.h
Macros to abstract toolchain specific capabilities.