diff options
Diffstat (limited to 'arch/x86/include/uapi/asm/sigcontext.h')
-rw-r--r-- | arch/x86/include/uapi/asm/sigcontext.h | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/arch/x86/include/uapi/asm/sigcontext.h b/arch/x86/include/uapi/asm/sigcontext.h new file mode 100644 index 000000000000..d8b9f9081e86 --- /dev/null +++ b/arch/x86/include/uapi/asm/sigcontext.h | |||
@@ -0,0 +1,221 @@ | |||
1 | #ifndef _UAPI_ASM_X86_SIGCONTEXT_H | ||
2 | #define _UAPI_ASM_X86_SIGCONTEXT_H | ||
3 | |||
4 | #include <linux/compiler.h> | ||
5 | #include <linux/types.h> | ||
6 | |||
7 | #define FP_XSTATE_MAGIC1 0x46505853U | ||
8 | #define FP_XSTATE_MAGIC2 0x46505845U | ||
9 | #define FP_XSTATE_MAGIC2_SIZE sizeof(FP_XSTATE_MAGIC2) | ||
10 | |||
11 | /* | ||
12 | * bytes 464..511 in the current 512byte layout of fxsave/fxrstor frame | ||
13 | * are reserved for SW usage. On cpu's supporting xsave/xrstor, these bytes | ||
14 | * are used to extended the fpstate pointer in the sigcontext, which now | ||
15 | * includes the extended state information along with fpstate information. | ||
16 | * | ||
17 | * Presence of FP_XSTATE_MAGIC1 at the beginning of this SW reserved | ||
18 | * area and FP_XSTATE_MAGIC2 at the end of memory layout | ||
19 | * (extended_size - FP_XSTATE_MAGIC2_SIZE) indicates the presence of the | ||
20 | * extended state information in the memory layout pointed by the fpstate | ||
21 | * pointer in sigcontext. | ||
22 | */ | ||
23 | struct _fpx_sw_bytes { | ||
24 | __u32 magic1; /* FP_XSTATE_MAGIC1 */ | ||
25 | __u32 extended_size; /* total size of the layout referred by | ||
26 | * fpstate pointer in the sigcontext. | ||
27 | */ | ||
28 | __u64 xstate_bv; | ||
29 | /* feature bit mask (including fp/sse/extended | ||
30 | * state) that is present in the memory | ||
31 | * layout. | ||
32 | */ | ||
33 | __u32 xstate_size; /* actual xsave state size, based on the | ||
34 | * features saved in the layout. | ||
35 | * 'extended_size' will be greater than | ||
36 | * 'xstate_size'. | ||
37 | */ | ||
38 | __u32 padding[7]; /* for future use. */ | ||
39 | }; | ||
40 | |||
41 | #ifdef __i386__ | ||
42 | /* | ||
43 | * As documented in the iBCS2 standard.. | ||
44 | * | ||
45 | * The first part of "struct _fpstate" is just the normal i387 | ||
46 | * hardware setup, the extra "status" word is used to save the | ||
47 | * coprocessor status word before entering the handler. | ||
48 | * | ||
49 | * Pentium III FXSR, SSE support | ||
50 | * Gareth Hughes <gareth@valinux.com>, May 2000 | ||
51 | * | ||
52 | * The FPU state data structure has had to grow to accommodate the | ||
53 | * extended FPU state required by the Streaming SIMD Extensions. | ||
54 | * There is no documented standard to accomplish this at the moment. | ||
55 | */ | ||
56 | struct _fpreg { | ||
57 | unsigned short significand[4]; | ||
58 | unsigned short exponent; | ||
59 | }; | ||
60 | |||
61 | struct _fpxreg { | ||
62 | unsigned short significand[4]; | ||
63 | unsigned short exponent; | ||
64 | unsigned short padding[3]; | ||
65 | }; | ||
66 | |||
67 | struct _xmmreg { | ||
68 | unsigned long element[4]; | ||
69 | }; | ||
70 | |||
71 | struct _fpstate { | ||
72 | /* Regular FPU environment */ | ||
73 | unsigned long cw; | ||
74 | unsigned long sw; | ||
75 | unsigned long tag; | ||
76 | unsigned long ipoff; | ||
77 | unsigned long cssel; | ||
78 | unsigned long dataoff; | ||
79 | unsigned long datasel; | ||
80 | struct _fpreg _st[8]; | ||
81 | unsigned short status; | ||
82 | unsigned short magic; /* 0xffff = regular FPU data only */ | ||
83 | |||
84 | /* FXSR FPU environment */ | ||
85 | unsigned long _fxsr_env[6]; /* FXSR FPU env is ignored */ | ||
86 | unsigned long mxcsr; | ||
87 | unsigned long reserved; | ||
88 | struct _fpxreg _fxsr_st[8]; /* FXSR FPU reg data is ignored */ | ||
89 | struct _xmmreg _xmm[8]; | ||
90 | unsigned long padding1[44]; | ||
91 | |||
92 | union { | ||
93 | unsigned long padding2[12]; | ||
94 | struct _fpx_sw_bytes sw_reserved; /* represents the extended | ||
95 | * state info */ | ||
96 | }; | ||
97 | }; | ||
98 | |||
99 | #define X86_FXSR_MAGIC 0x0000 | ||
100 | |||
101 | #ifndef __KERNEL__ | ||
102 | /* | ||
103 | * User-space might still rely on the old definition: | ||
104 | */ | ||
105 | struct sigcontext { | ||
106 | unsigned short gs, __gsh; | ||
107 | unsigned short fs, __fsh; | ||
108 | unsigned short es, __esh; | ||
109 | unsigned short ds, __dsh; | ||
110 | unsigned long edi; | ||
111 | unsigned long esi; | ||
112 | unsigned long ebp; | ||
113 | unsigned long esp; | ||
114 | unsigned long ebx; | ||
115 | unsigned long edx; | ||
116 | unsigned long ecx; | ||
117 | unsigned long eax; | ||
118 | unsigned long trapno; | ||
119 | unsigned long err; | ||
120 | unsigned long eip; | ||
121 | unsigned short cs, __csh; | ||
122 | unsigned long eflags; | ||
123 | unsigned long esp_at_signal; | ||
124 | unsigned short ss, __ssh; | ||
125 | struct _fpstate __user *fpstate; | ||
126 | unsigned long oldmask; | ||
127 | unsigned long cr2; | ||
128 | }; | ||
129 | #endif /* !__KERNEL__ */ | ||
130 | |||
131 | #else /* __i386__ */ | ||
132 | |||
133 | /* FXSAVE frame */ | ||
134 | /* Note: reserved1/2 may someday contain valuable data. Always save/restore | ||
135 | them when you change signal frames. */ | ||
136 | struct _fpstate { | ||
137 | __u16 cwd; | ||
138 | __u16 swd; | ||
139 | __u16 twd; /* Note this is not the same as the | ||
140 | 32bit/x87/FSAVE twd */ | ||
141 | __u16 fop; | ||
142 | __u64 rip; | ||
143 | __u64 rdp; | ||
144 | __u32 mxcsr; | ||
145 | __u32 mxcsr_mask; | ||
146 | __u32 st_space[32]; /* 8*16 bytes for each FP-reg */ | ||
147 | __u32 xmm_space[64]; /* 16*16 bytes for each XMM-reg */ | ||
148 | __u32 reserved2[12]; | ||
149 | union { | ||
150 | __u32 reserved3[12]; | ||
151 | struct _fpx_sw_bytes sw_reserved; /* represents the extended | ||
152 | * state information */ | ||
153 | }; | ||
154 | }; | ||
155 | |||
156 | #ifndef __KERNEL__ | ||
157 | /* | ||
158 | * User-space might still rely on the old definition: | ||
159 | */ | ||
160 | struct sigcontext { | ||
161 | __u64 r8; | ||
162 | __u64 r9; | ||
163 | __u64 r10; | ||
164 | __u64 r11; | ||
165 | __u64 r12; | ||
166 | __u64 r13; | ||
167 | __u64 r14; | ||
168 | __u64 r15; | ||
169 | __u64 rdi; | ||
170 | __u64 rsi; | ||
171 | __u64 rbp; | ||
172 | __u64 rbx; | ||
173 | __u64 rdx; | ||
174 | __u64 rax; | ||
175 | __u64 rcx; | ||
176 | __u64 rsp; | ||
177 | __u64 rip; | ||
178 | __u64 eflags; /* RFLAGS */ | ||
179 | __u16 cs; | ||
180 | __u16 gs; | ||
181 | __u16 fs; | ||
182 | __u16 __pad0; | ||
183 | __u64 err; | ||
184 | __u64 trapno; | ||
185 | __u64 oldmask; | ||
186 | __u64 cr2; | ||
187 | struct _fpstate __user *fpstate; /* zero when no FPU context */ | ||
188 | #ifdef __ILP32__ | ||
189 | __u32 __fpstate_pad; | ||
190 | #endif | ||
191 | __u64 reserved1[8]; | ||
192 | }; | ||
193 | #endif /* !__KERNEL__ */ | ||
194 | |||
195 | #endif /* !__i386__ */ | ||
196 | |||
197 | struct _xsave_hdr { | ||
198 | __u64 xstate_bv; | ||
199 | __u64 reserved1[2]; | ||
200 | __u64 reserved2[5]; | ||
201 | }; | ||
202 | |||
203 | struct _ymmh_state { | ||
204 | /* 16 * 16 bytes for each YMMH-reg */ | ||
205 | __u32 ymmh_space[64]; | ||
206 | }; | ||
207 | |||
208 | /* | ||
209 | * Extended state pointed by the fpstate pointer in the sigcontext. | ||
210 | * In addition to the fpstate, information encoded in the xstate_hdr | ||
211 | * indicates the presence of other extended state information | ||
212 | * supported by the processor and OS. | ||
213 | */ | ||
214 | struct _xstate { | ||
215 | struct _fpstate fpstate; | ||
216 | struct _xsave_hdr xstate_hdr; | ||
217 | struct _ymmh_state ymmh; | ||
218 | /* new processor state extensions go here */ | ||
219 | }; | ||
220 | |||
221 | #endif /* _UAPI_ASM_X86_SIGCONTEXT_H */ | ||