309 lines
6.1 KiB
C
309 lines
6.1 KiB
C
/*
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* Copyright (C) 2014 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _SYS_UCONTEXT_H_
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#define _SYS_UCONTEXT_H_
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#include <signal.h>
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#include <sys/user.h>
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__BEGIN_DECLS
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#if defined(__arm__)
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enum {
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REG_R0 = 0,
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REG_R1,
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REG_R2,
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REG_R3,
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REG_R4,
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REG_R5,
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REG_R6,
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REG_R7,
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REG_R8,
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REG_R9,
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REG_R10,
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REG_R11,
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REG_R12,
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REG_R13,
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REG_R14,
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REG_R15,
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};
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#define NGREG 18 /* Like glibc. */
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typedef int greg_t;
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typedef greg_t gregset_t[NGREG];
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#include <asm/sigcontext.h>
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typedef struct sigcontext mcontext_t;
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typedef struct ucontext {
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unsigned long uc_flags;
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struct ucontext* uc_link;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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sigset_t uc_sigmask;
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// Android has a wrong (smaller) sigset_t on ARM.
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uint32_t __padding_rt_sigset;
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// The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM.
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char __padding[120];
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unsigned long uc_regspace[128] __attribute__((__aligned__(8)));
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} ucontext_t;
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#elif defined(__aarch64__)
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#define NGREG 34 /* x0..x30 + sp + pc + pstate */
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typedef unsigned long greg_t;
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typedef greg_t gregset_t[NGREG];
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#include <asm/sigcontext.h>
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typedef struct sigcontext mcontext_t;
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typedef struct ucontext {
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unsigned long uc_flags;
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struct ucontext *uc_link;
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stack_t uc_stack;
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sigset_t uc_sigmask;
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// The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM64.
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char __padding[128 - sizeof(sigset_t)];
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mcontext_t uc_mcontext;
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} ucontext_t;
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#elif defined(__i386__)
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enum {
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REG_GS = 0,
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REG_FS,
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REG_ES,
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REG_DS,
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REG_EDI,
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REG_ESI,
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REG_EBP,
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REG_ESP,
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REG_EBX,
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REG_EDX,
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REG_ECX,
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REG_EAX,
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REG_TRAPNO,
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REG_ERR,
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REG_EIP,
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REG_CS,
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REG_EFL,
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REG_UESP,
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REG_SS,
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NGREG
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};
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typedef int greg_t;
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typedef greg_t gregset_t[NGREG];
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struct _libc_fpreg {
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unsigned short significand[4];
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unsigned short exponent;
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};
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struct _libc_fpstate {
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unsigned long cw;
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unsigned long sw;
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unsigned long tag;
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unsigned long ipoff;
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unsigned long cssel;
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unsigned long dataoff;
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unsigned long datasel;
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struct _libc_fpreg _st[8];
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unsigned long status;
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};
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typedef struct _libc_fpstate* fpregset_t;
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typedef struct {
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gregset_t gregs;
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fpregset_t fpregs;
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unsigned long oldmask;
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unsigned long cr2;
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} mcontext_t;
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typedef struct ucontext {
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unsigned long uc_flags;
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struct ucontext* uc_link;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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sigset_t uc_sigmask;
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// Android has a wrong (smaller) sigset_t on x86.
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uint32_t __padding_rt_sigset;
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struct _libc_fpstate __fpregs_mem;
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} ucontext_t;
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#elif defined(__mips__)
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/* glibc doesn't have names for MIPS registers. */
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#define NGREG 32
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#define NFPREG 32
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typedef unsigned long long greg_t;
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typedef greg_t gregset_t[NGREG];
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typedef struct fpregset {
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union {
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double fp_dregs[NFPREG];
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struct {
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float _fp_fregs;
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unsigned _fp_pad;
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} fp_fregs[NFPREG];
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} fp_r;
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} fpregset_t;
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#ifdef __LP64__
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typedef struct {
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gregset_t gregs;
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fpregset_t fpregs;
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greg_t mdhi;
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greg_t hi1;
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greg_t hi2;
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greg_t hi3;
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greg_t mdlo;
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greg_t lo1;
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greg_t lo2;
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greg_t lo3;
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greg_t pc;
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uint32_t fpc_csr;
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uint32_t used_math;
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uint32_t dsp;
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uint32_t reserved;
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} mcontext_t;
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#else
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typedef struct {
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unsigned regmask;
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unsigned status;
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greg_t pc;
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gregset_t gregs;
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fpregset_t fpregs;
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unsigned fp_owned;
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unsigned fpc_csr;
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unsigned fpc_eir;
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unsigned used_math;
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unsigned dsp;
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greg_t mdhi;
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greg_t mdlo;
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unsigned long hi1;
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unsigned long lo1;
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unsigned long hi2;
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unsigned long lo2;
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unsigned long hi3;
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unsigned long lo3;
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} mcontext_t;
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#endif
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typedef struct ucontext {
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unsigned long uc_flags;
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struct ucontext* uc_link;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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sigset_t uc_sigmask;
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} ucontext_t;
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#elif defined(__x86_64__)
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enum {
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REG_R8 = 0,
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REG_R9,
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REG_R10,
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REG_R11,
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REG_R12,
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REG_R13,
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REG_R14,
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REG_R15,
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REG_RDI,
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REG_RSI,
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REG_RBP,
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REG_RBX,
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REG_RDX,
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REG_RAX,
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REG_RCX,
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REG_RSP,
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REG_RIP,
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REG_EFL,
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REG_CSGSFS,
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REG_ERR,
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REG_TRAPNO,
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REG_OLDMASK,
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REG_CR2,
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NGREG
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};
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typedef long greg_t;
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typedef greg_t gregset_t[NGREG];
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struct _libc_fpxreg {
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unsigned short significand[4];
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unsigned short exponent;
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unsigned short padding[3];
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};
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struct _libc_xmmreg {
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uint32_t element[4];
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};
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struct _libc_fpstate {
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uint16_t cwd;
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uint16_t swd;
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uint16_t ftw;
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uint16_t fop;
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uint64_t rip;
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uint64_t rdp;
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uint32_t mxcsr;
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uint32_t mxcr_mask;
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struct _libc_fpxreg _st[8];
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struct _libc_xmmreg _xmm[16];
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uint32_t padding[24];
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};
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typedef struct _libc_fpstate* fpregset_t;
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typedef struct {
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gregset_t gregs;
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fpregset_t fpregs;
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unsigned long __reserved1[8];
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} mcontext_t;
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typedef struct ucontext {
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unsigned long uc_flags;
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struct ucontext* uc_link;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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sigset_t uc_sigmask;
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struct _libc_fpstate __fpregs_mem;
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} ucontext_t;
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#endif
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__END_DECLS
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#endif /* _SYS_UCONTEXT_H_ */
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