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authorIngo Molnar <mingo@kernel.org>2015-09-05 03:32:30 -0400
committerIngo Molnar <mingo@kernel.org>2015-09-08 04:03:55 -0400
commitc3f4986fb0774bb13feb4bade1276bed2ba8a3db (patch)
treee3ddb1569795ec92efa15a3d2a0cc2545f7b159d /arch/x86/include/uapi
parentb76cb6c869b966b4c991251136b45b3e1babc4e8 (diff)
x86/headers: Clean up uapi/asm/sigcontext32.h
Clean up sigcontext32.h a bit: - use consistent and readable vertical spacing - fix, harmonize and extend comments No field name has been changed, user-space might be relying on them. Acked-by: Mikko Rapeli <mikko.rapeli@iki.fi> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Link: http://lkml.kernel.org/r/1441438363-9999-3-git-send-email-mingo@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/uapi')
-rw-r--r--arch/x86/include/uapi/asm/sigcontext32.h110
1 files changed, 58 insertions, 52 deletions
diff --git a/arch/x86/include/uapi/asm/sigcontext32.h b/arch/x86/include/uapi/asm/sigcontext32.h
index ff7826c41a1c..6ff4fbab650e 100644
--- a/arch/x86/include/uapi/asm/sigcontext32.h
+++ b/arch/x86/include/uapi/asm/sigcontext32.h
@@ -1,79 +1,85 @@
1#ifndef _ASM_X86_SIGCONTEXT32_H 1#ifndef _ASM_X86_SIGCONTEXT32_H
2#define _ASM_X86_SIGCONTEXT32_H 2#define _ASM_X86_SIGCONTEXT32_H
3 3
4/* Signal context definitions for compat 32-bit programs: */
5
4#include <linux/types.h> 6#include <linux/types.h>
5 7
6#include <asm/sigcontext.h> 8#include <asm/sigcontext.h>
7 9
8/* signal context for 32bit programs. */ 10/* 10-byte legacy floating point register: */
9
10#define X86_FXSR_MAGIC 0x0000
11
12struct _fpreg { 11struct _fpreg {
13 unsigned short significand[4]; 12 unsigned short significand[4];
14 unsigned short exponent; 13 unsigned short exponent;
15}; 14};
16 15
16/* 16-byte floating point register: */
17struct _fpxreg { 17struct _fpxreg {
18 unsigned short significand[4]; 18 unsigned short significand[4];
19 unsigned short exponent; 19 unsigned short exponent;
20 unsigned short padding[3]; 20 unsigned short padding[3];
21}; 21};
22 22
23/* 16-byte XMM vector register: */
23struct _xmmreg { 24struct _xmmreg {
24 __u32 element[4]; 25 __u32 element[4];
25}; 26};
26 27
27/* FSAVE frame with extensions */ 28#define X86_FXSR_MAGIC 0x0000
29
30/* FXSAVE frame: FSAVE frame with extensions */
28struct _fpstate_ia32 { 31struct _fpstate_ia32 {
29 /* Regular FPU environment */ 32 /* Regular FPU environment: */
30 __u32 cw; 33 __u32 cw;
31 __u32 sw; 34 __u32 sw;
32 __u32 tag; /* not compatible to 64bit twd */ 35 __u32 tag; /* Not compatible with the 64-bit frame */
33 __u32 ipoff; 36 __u32 ipoff;
34 __u32 cssel; 37 __u32 cssel;
35 __u32 dataoff; 38 __u32 dataoff;
36 __u32 datasel; 39 __u32 datasel;
37 struct _fpreg _st[8]; 40 struct _fpreg _st[8];
38 unsigned short status; 41 unsigned short status;
39 unsigned short magic; /* 0xffff = regular FPU data only */ 42 unsigned short magic; /* 0xffff: regular FPU data only */
43 /* 0x0000: FXSR data */
40 44
41 /* FXSR FPU environment */ 45 /* Extended FXSR FPU environment: */
42 __u32 _fxsr_env[6]; 46 __u32 _fxsr_env[6];
43 __u32 mxcsr; 47 __u32 mxcsr;
44 __u32 reserved; 48 __u32 reserved;
45 struct _fpxreg _fxsr_st[8]; 49 struct _fpxreg _fxsr_st[8];
46 struct _xmmreg _xmm[8]; /* It's actually 16 */ 50 struct _xmmreg _xmm[8]; /* The first 8 XMM registers */
47 __u32 padding[44]; 51 __u32 padding[44]; /* The second 8 XMM registers plus padding */
48 union { 52 union {
49 __u32 padding2[12]; 53 __u32 padding2[12];
50 struct _fpx_sw_bytes sw_reserved; 54 /* Might encode xstate extensions, see asm/sigcontext.h: */
55 struct _fpx_sw_bytes sw_reserved;
51 }; 56 };
52}; 57};
53 58
59/* 32-bit compat sigcontext: */
54struct sigcontext_ia32 { 60struct sigcontext_ia32 {
55 unsigned short gs, __gsh; 61 unsigned short gs, __gsh;
56 unsigned short fs, __fsh; 62 unsigned short fs, __fsh;
57 unsigned short es, __esh; 63 unsigned short es, __esh;
58 unsigned short ds, __dsh; 64 unsigned short ds, __dsh;
59 unsigned int di; 65 unsigned int di;
60 unsigned int si; 66 unsigned int si;
61 unsigned int bp; 67 unsigned int bp;
62 unsigned int sp; 68 unsigned int sp;
63 unsigned int bx; 69 unsigned int bx;
64 unsigned int dx; 70 unsigned int dx;
65 unsigned int cx; 71 unsigned int cx;
66 unsigned int ax; 72 unsigned int ax;
67 unsigned int trapno; 73 unsigned int trapno;
68 unsigned int err; 74 unsigned int err;
69 unsigned int ip; 75 unsigned int ip;
70 unsigned short cs, __csh; 76 unsigned short cs, __csh;
71 unsigned int flags; 77 unsigned int flags;
72 unsigned int sp_at_signal; 78 unsigned int sp_at_signal;
73 unsigned short ss, __ssh; 79 unsigned short ss, __ssh;
74 unsigned int fpstate; /* really (struct _fpstate_ia32 *) */ 80 unsigned int fpstate; /* Pointer to 'struct _fpstate_ia32' */
75 unsigned int oldmask; 81 unsigned int oldmask;
76 unsigned int cr2; 82 unsigned int cr2;
77}; 83};
78 84
79#endif /* _ASM_X86_SIGCONTEXT32_H */ 85#endif /* _ASM_X86_SIGCONTEXT32_H */
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