1 /*
2  *  i386 dependent signal definitions
3  *
4  *
5  *  This program is free software; you can redistribute it and/or modify
6  *  it under the terms of the GNU General Public License as published by
7  *  the Free Software Foundation; either version 2 of the License, or
8  *  (at your option) any later version.
9  *
10  *  This program is distributed in the hope that it will be useful,
11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  *  GNU General Public License for more details.
14  *
15  *  You should have received a copy of the GNU General Public License
16  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
17  */
18 #ifndef TARGET_ARCH_SIGNAL_H
19 #define TARGET_ARCH_SIGNAL_H
20 
21 #include "cpu.h"
22 
23 /* Size of the signal trampolin code placed on the stack. */
24 #define TARGET_SZSIGCODE    0
25 
26 /* compare to  x86/include/_limits.h */
27 #define TARGET_MINSIGSTKSZ  (512 * 4)               /* min sig stack size */
28 #define TARGET_SIGSTKSZ     (MINSIGSTKSZ + 32768)   /* recommended size */
29 
30 typedef struct target_mcontext {
31     abi_ulong   mc_onstack;     /* XXX - sigcontext compat. */
32     abi_ulong   mc_gs;          /* machine state (struct trapframe) */
33     abi_ulong   mc_fs;
34     abi_ulong   mc_es;
35     abi_ulong   mc_ds;
36     abi_ulong   mc_edi;
37     abi_ulong   mc_esi;
38     abi_ulong   mc_ebp;
39     abi_ulong   mc_isp;
40     abi_ulong   mc_ebx;
41     abi_ulong   mc_edx;
42     abi_ulong   mc_ecx;
43     abi_ulong   mc_eax;
44     abi_ulong   mc_trapno;
45     abi_ulong   mc_err;
46     abi_ulong   mc_eip;
47     abi_ulong   mc_cs;
48     abi_ulong   mc_eflags;
49     abi_ulong   mc_esp;
50     abi_ulong   mc_ss;
51 
52     int32_t     mc_len;                 /* sizeof(mcontext_t) */
53 #define _MC_FPFMT_NODEV         0x10000 /* device not present or configured */
54 #define _MC_FPFMT_387           0x10001
55 #define _MC_FPFMT_XMM           0x10002
56     int32_t     mc_fpformat;
57 #define _MC_FPOWNED_NONE        0x20000 /* FP state not used */
58 #define _MC_FPOWNED_FPU         0x20001 /* FP state came from FPU */
59 #define _MC_FPOWNED_PCB         0x20002 /* FP state came from PCB */
60     int32_t     mc_ownedfp;
61     abi_ulong mc_flags;
62         /*
63          * See <machine/npx.h> for the internals of mc_fpstate[].
64          */
65     int32_t     mc_fpstate[128] __aligned(16);
66 
67     abi_ulong mc_fsbase;
68     abi_ulong mc_gsbase;
69 
70     abi_ulong mc_xfpustate;
71     abi_ulong mc_xfpustate_len;
72 
73     int32_t     mc_spare2[4];
74 } target_mcontext_t;
75 
76 #define TARGET_MCONTEXT_SIZE 640
77 #define TARGET_UCONTEXT_SIZE 704
78 
79 #include "target_os_ucontext.h"
80 
81 struct target_sigframe {
82     abi_ulong   sf_signum;
83     abi_ulong   sf_siginfo;    /* code or pointer to sf_si */
84     abi_ulong   sf_ucontext;   /* points to sf_uc */
85     abi_ulong   sf_addr;       /* undocumented 4th arg */
86     target_ucontext_t   sf_uc; /* = *sf_uncontext */
87     target_siginfo_t    sf_si; /* = *sf_siginfo (SA_SIGINFO case)*/
88     uint32_t    __spare__[2];
89 };
90 
91 #define TARGET_SIGSTACK_ALIGN 8
92 
93 #endif /* TARGET_ARCH_SIGNAL_H */
94