libc/include/sys/ucontext.h - platform/bionic - Git at Google

 /*
  * Copyright (C) 2014 The Android Open Source Project
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *  * Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *  * Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */

 #pragma once

 #include <sys/cdefs.h>

 #include <signal.h>
 #include <sys/user.h>

 __BEGIN_DECLS

 #if defined(__arm__)

 enum {
   REG_R0 = 0,
 #define REG_R0 REG_R0
   REG_R1,
 #define REG_R1 REG_R1
   REG_R2,
 #define REG_R2 REG_R2
   REG_R3,
 #define REG_R3 REG_R3
   REG_R4,
 #define REG_R4 REG_R4
   REG_R5,
 #define REG_R5 REG_R5
   REG_R6,
 #define REG_R6 REG_R6
   REG_R7,
 #define REG_R7 REG_R7
   REG_R8,
 #define REG_R8 REG_R8
   REG_R9,
 #define REG_R9 REG_R9
   REG_R10,
 #define REG_R10 REG_R10
   REG_R11,
 #define REG_R11 REG_R11
   REG_R12,
 #define REG_R12 REG_R12
   REG_R13,
 #define REG_R13 REG_R13
   REG_R14,
 #define REG_R14 REG_R14
   REG_R15,
 #define REG_R15 REG_R15
 };

 #define NGREG 18 /* Like glibc. */

 typedef int greg_t;
 typedef greg_t gregset_t[NGREG];
 typedef struct user_fpregs fpregset_t;

 #include <asm/sigcontext.h>
 typedef struct sigcontext mcontext_t;

 typedef struct ucontext {
   unsigned long uc_flags;
   struct ucontext* uc_link;
   stack_t uc_stack;
   mcontext_t uc_mcontext;
   union {
     struct {
       sigset_t uc_sigmask;
       /* Android has a wrong (smaller) sigset_t on ARM. */
       uint32_t __padding_rt_sigset;
     };
     sigset64_t uc_sigmask64;
   };
   /* The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM. */
   char __padding[120];
   unsigned long uc_regspace[128] __attribute__((__aligned__(8)));
 } ucontext_t;

 #elif defined(__aarch64__)

 #define NGREG 34 /* x0..x30 + sp + pc + pstate */
 typedef unsigned long greg_t;
 typedef greg_t gregset_t[NGREG];
 typedef struct user_fpsimd_struct fpregset_t;

 #include <asm/sigcontext.h>
 typedef struct sigcontext mcontext_t;

 typedef struct ucontext {
   unsigned long uc_flags;
   struct ucontext *uc_link;
   stack_t uc_stack;
   union {
     sigset_t uc_sigmask;
     sigset64_t uc_sigmask64;
   };
   /* The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM64. */
   char __padding[128 - sizeof(sigset_t)];
   mcontext_t uc_mcontext;
 } ucontext_t;

 #elif defined(__i386__)

 enum {
   REG_GS = 0,
 #define REG_GS REG_GS
   REG_FS,
 #define REG_FS REG_FS
   REG_ES,
 #define REG_ES REG_ES
   REG_DS,
 #define REG_DS REG_DS
   REG_EDI,
 #define REG_EDI REG_EDI
   REG_ESI,
 #define REG_ESI REG_ESI
   REG_EBP,
 #define REG_EBP REG_EBP
   REG_ESP,
 #define REG_ESP REG_ESP
   REG_EBX,
 #define REG_EBX REG_EBX
   REG_EDX,
 #define REG_EDX REG_EDX
   REG_ECX,
 #define REG_ECX REG_ECX
   REG_EAX,
 #define REG_EAX REG_EAX
   REG_TRAPNO,
 #define REG_TRAPNO REG_TRAPNO
   REG_ERR,
 #define REG_ERR REG_ERR
   REG_EIP,
 #define REG_EIP REG_EIP
   REG_CS,
 #define REG_CS REG_CS
   REG_EFL,
 #define REG_EFL REG_EFL
   REG_UESP,
 #define REG_UESP REG_UESP
   REG_SS,
 #define REG_SS REG_SS
   NGREG
 #define NGREG NGREG
 };

 typedef int greg_t;
 typedef greg_t gregset_t[NGREG];

 struct _libc_fpreg {
   unsigned short significand[4];
   unsigned short exponent;
 };

 struct _libc_fpstate {
   unsigned long cw;
   unsigned long sw;
   unsigned long tag;
   unsigned long ipoff;
   unsigned long cssel;
   unsigned long dataoff;
   unsigned long datasel;
   struct _libc_fpreg _st[8];
   unsigned long status;
 };

 typedef struct _libc_fpstate* fpregset_t;

 typedef struct {
   gregset_t gregs;
   fpregset_t fpregs;
   unsigned long oldmask;
   unsigned long cr2;
 } mcontext_t;

 typedef struct ucontext {
   unsigned long uc_flags;
   struct ucontext* uc_link;
   stack_t uc_stack;
   mcontext_t uc_mcontext;
   union {
     struct {
       sigset_t uc_sigmask;
       /* Android has a wrong (smaller) sigset_t on x86. */
       uint32_t __padding_rt_sigset;
     };
     sigset64_t uc_sigmask64;
   };
   struct _libc_fpstate __fpregs_mem;
 } ucontext_t;

 #elif defined(__x86_64__)

 enum {
   REG_R8 = 0,
 #define REG_R8 REG_R8
   REG_R9,
 #define REG_R9 REG_R9
   REG_R10,
 #define REG_R10 REG_R10
   REG_R11,
 #define REG_R11 REG_R11
   REG_R12,
 #define REG_R12 REG_R12
   REG_R13,
 #define REG_R13 REG_R13
   REG_R14,
 #define REG_R14 REG_R14
   REG_R15,
 #define REG_R15 REG_R15
   REG_RDI,
 #define REG_RDI REG_RDI
   REG_RSI,
 #define REG_RSI REG_RSI
   REG_RBP,
 #define REG_RBP REG_RBP
   REG_RBX,
 #define REG_RBX REG_RBX
   REG_RDX,
 #define REG_RDX REG_RDX
   REG_RAX,
 #define REG_RAX REG_RAX
   REG_RCX,
 #define REG_RCX REG_RCX
   REG_RSP,
 #define REG_RSP REG_RSP
   REG_RIP,
 #define REG_RIP REG_RIP
   REG_EFL,
 #define REG_EFL REG_EFL
   REG_CSGSFS,
 #define REG_CSGSFS REG_CSGSFS
   REG_ERR,
 #define REG_ERR REG_ERR
   REG_TRAPNO,
 #define REG_TRAPNO REG_TRAPNO
   REG_OLDMASK,
 #define REG_OLDMASK REG_OLDMASK
   REG_CR2,
 #define REG_CR2 REG_CR2
   NGREG
 #define NGREG NGREG
 };

 typedef long greg_t;
 typedef greg_t gregset_t[NGREG];

 struct _libc_fpxreg {
   unsigned short significand[4];
   unsigned short exponent;
   unsigned short padding[3];
 };

 struct _libc_xmmreg {
   uint32_t element[4];
 };

 struct _libc_fpstate {
   uint16_t cwd;
   uint16_t swd;
   uint16_t ftw;
   uint16_t fop;
   uint64_t rip;
   uint64_t rdp;
   uint32_t mxcsr;
   uint32_t mxcr_mask;
   struct _libc_fpxreg _st[8];
   struct _libc_xmmreg _xmm[16];
   uint32_t padding[24];
 };

 typedef struct _libc_fpstate* fpregset_t;

 typedef struct {
   gregset_t gregs;
   fpregset_t fpregs;
   unsigned long __reserved1[8];
 } mcontext_t;

 typedef struct ucontext {
   unsigned long uc_flags;
   struct ucontext* uc_link;
   stack_t uc_stack;
   mcontext_t uc_mcontext;
   union {
     sigset_t uc_sigmask;
     sigset64_t uc_sigmask64;
   };
   struct _libc_fpstate __fpregs_mem;
 } ucontext_t;

 #elif defined(__riscv)

 #define NGREG 32

 #if defined(__USE_GNU)

 enum {
   REG_PC = 0,
 #define REG_PC REG_PC
   REG_RA = 1,
 #define REG_RA REG_RA
   REG_SP = 2,
 #define REG_SP REG_SP
   REG_TP = 4,
 #define REG_TP REG_TP
   REG_S0 = 8,
 #define REG_S0 REG_S0
   REG_A0 = 10,
 #define REG_A0 REG_A0
 };

 #endif // defined(__USE_GNU)

 typedef unsigned long __riscv_mc_gp_state[NGREG];

 typedef unsigned long greg_t;
 typedef unsigned long gregset_t[NGREG];
 typedef union __riscv_mc_fp_state fpregset_t;

 /* These match the kernel <asm/ptrace.h> types but with different names. */

 struct __riscv_mc_f_ext_state {
   uint32_t __f[32];
   uint32_t __fcsr;
 };

 struct __riscv_mc_d_ext_state {
   uint64_t __f[32];
   uint32_t __fcsr;
 };

 struct __riscv_mc_q_ext_state {
   uint64_t __f[64] __attribute__((__aligned__(16)));
   uint32_t __fcsr;
   uint32_t __reserved[3];
 };

 union __riscv_mc_fp_state {
   struct __riscv_mc_f_ext_state __f;
   struct __riscv_mc_d_ext_state __d;
   struct __riscv_mc_q_ext_state __q;
 };

 /* This matches the kernel <asm/sigcontext.h> but with different names. */

 typedef struct mcontext_t {
   __riscv_mc_gp_state __gregs;
   union __riscv_mc_fp_state __fpregs;
 } mcontext_t;

 /* This matches the kernel <asm/ucontext.h> but using mcontext_t. */

 typedef struct ucontext {
   unsigned long uc_flags;
   struct ucontext* uc_link;
   stack_t uc_stack;
   union {
     sigset_t uc_sigmask;
     sigset64_t uc_sigmask64;
   };
   /* The kernel adds extra padding here to allow sigset_t to grow. */
   char __padding[128 - sizeof(sigset_t)];
   mcontext_t uc_mcontext;
 } ucontext_t;

 #endif

 __END_DECLS
	/*
	* Copyright (C) 2014 The Android Open Source Project
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* * Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in
	* the documentation and/or other materials provided with the
	* distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
	* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
	* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
	* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
	* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
	* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.
	*/

	#pragma once

	#include <sys/cdefs.h>

	#include <signal.h>
	#include <sys/user.h>

	__BEGIN_DECLS

	#if defined(__arm__)

	enum {
	REG_R0 = 0,
	#define REG_R0 REG_R0
	REG_R1,
	#define REG_R1 REG_R1
	REG_R2,
	#define REG_R2 REG_R2
	REG_R3,
	#define REG_R3 REG_R3
	REG_R4,
	#define REG_R4 REG_R4
	REG_R5,
	#define REG_R5 REG_R5
	REG_R6,
	#define REG_R6 REG_R6
	REG_R7,
	#define REG_R7 REG_R7
	REG_R8,
	#define REG_R8 REG_R8
	REG_R9,
	#define REG_R9 REG_R9
	REG_R10,
	#define REG_R10 REG_R10
	REG_R11,
	#define REG_R11 REG_R11
	REG_R12,
	#define REG_R12 REG_R12
	REG_R13,
	#define REG_R13 REG_R13
	REG_R14,
	#define REG_R14 REG_R14
	REG_R15,
	#define REG_R15 REG_R15
	};

	#define NGREG 18 /* Like glibc. */

	typedef int greg_t;
	typedef greg_t gregset_t[NGREG];
	typedef struct user_fpregs fpregset_t;

	#include <asm/sigcontext.h>
	typedef struct sigcontext mcontext_t;

	typedef struct ucontext {
	unsigned long uc_flags;
	struct ucontext* uc_link;
	stack_t uc_stack;
	mcontext_t uc_mcontext;
	union {
	struct {
	sigset_t uc_sigmask;
	/* Android has a wrong (smaller) sigset_t on ARM. */
	uint32_t __padding_rt_sigset;
	};
	sigset64_t uc_sigmask64;
	};
	/* The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM. */
	char __padding[120];
	unsigned long uc_regspace[128] __attribute__((__aligned__(8)));
	} ucontext_t;

	#elif defined(__aarch64__)

	#define NGREG 34 /* x0..x30 + sp + pc + pstate */
	typedef unsigned long greg_t;
	typedef greg_t gregset_t[NGREG];
	typedef struct user_fpsimd_struct fpregset_t;

	#include <asm/sigcontext.h>
	typedef struct sigcontext mcontext_t;

	typedef struct ucontext {
	unsigned long uc_flags;
	struct ucontext *uc_link;
	stack_t uc_stack;
	union {
	sigset_t uc_sigmask;
	sigset64_t uc_sigmask64;
	};
	/* The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM64. */
	char __padding[128 - sizeof(sigset_t)];
	mcontext_t uc_mcontext;
	} ucontext_t;

	#elif defined(__i386__)

	enum {
	REG_GS = 0,
	#define REG_GS REG_GS
	REG_FS,
	#define REG_FS REG_FS
	REG_ES,
	#define REG_ES REG_ES
	REG_DS,
	#define REG_DS REG_DS
	REG_EDI,
	#define REG_EDI REG_EDI
	REG_ESI,
	#define REG_ESI REG_ESI
	REG_EBP,
	#define REG_EBP REG_EBP
	REG_ESP,
	#define REG_ESP REG_ESP
	REG_EBX,
	#define REG_EBX REG_EBX
	REG_EDX,
	#define REG_EDX REG_EDX
	REG_ECX,
	#define REG_ECX REG_ECX
	REG_EAX,
	#define REG_EAX REG_EAX
	REG_TRAPNO,
	#define REG_TRAPNO REG_TRAPNO
	REG_ERR,
	#define REG_ERR REG_ERR
	REG_EIP,
	#define REG_EIP REG_EIP
	REG_CS,
	#define REG_CS REG_CS
	REG_EFL,
	#define REG_EFL REG_EFL
	REG_UESP,
	#define REG_UESP REG_UESP
	REG_SS,
	#define REG_SS REG_SS
	NGREG
	#define NGREG NGREG
	};

	typedef int greg_t;
	typedef greg_t gregset_t[NGREG];

	struct _libc_fpreg {
	unsigned short significand[4];
	unsigned short exponent;
	};

	struct _libc_fpstate {
	unsigned long cw;
	unsigned long sw;
	unsigned long tag;
	unsigned long ipoff;
	unsigned long cssel;
	unsigned long dataoff;
	unsigned long datasel;
	struct _libc_fpreg _st[8];
	unsigned long status;
	};

	typedef struct _libc_fpstate* fpregset_t;

	typedef struct {
	gregset_t gregs;
	fpregset_t fpregs;
	unsigned long oldmask;
	unsigned long cr2;
	} mcontext_t;

	typedef struct ucontext {
	unsigned long uc_flags;
	struct ucontext* uc_link;
	stack_t uc_stack;
	mcontext_t uc_mcontext;
	union {
	struct {
	sigset_t uc_sigmask;
	/* Android has a wrong (smaller) sigset_t on x86. */
	uint32_t __padding_rt_sigset;
	};
	sigset64_t uc_sigmask64;
	};
	struct _libc_fpstate __fpregs_mem;
	} ucontext_t;

	#elif defined(__x86_64__)

	enum {
	REG_R8 = 0,
	#define REG_R8 REG_R8
	REG_R9,
	#define REG_R9 REG_R9
	REG_R10,
	#define REG_R10 REG_R10
	REG_R11,
	#define REG_R11 REG_R11
	REG_R12,
	#define REG_R12 REG_R12
	REG_R13,
	#define REG_R13 REG_R13
	REG_R14,
	#define REG_R14 REG_R14
	REG_R15,
	#define REG_R15 REG_R15
	REG_RDI,
	#define REG_RDI REG_RDI
	REG_RSI,
	#define REG_RSI REG_RSI
	REG_RBP,
	#define REG_RBP REG_RBP
	REG_RBX,
	#define REG_RBX REG_RBX
	REG_RDX,
	#define REG_RDX REG_RDX
	REG_RAX,
	#define REG_RAX REG_RAX
	REG_RCX,
	#define REG_RCX REG_RCX
	REG_RSP,
	#define REG_RSP REG_RSP
	REG_RIP,
	#define REG_RIP REG_RIP
	REG_EFL,
	#define REG_EFL REG_EFL
	REG_CSGSFS,
	#define REG_CSGSFS REG_CSGSFS
	REG_ERR,
	#define REG_ERR REG_ERR
	REG_TRAPNO,
	#define REG_TRAPNO REG_TRAPNO
	REG_OLDMASK,
	#define REG_OLDMASK REG_OLDMASK
	REG_CR2,
	#define REG_CR2 REG_CR2
	NGREG
	#define NGREG NGREG
	};

	typedef long greg_t;
	typedef greg_t gregset_t[NGREG];

	struct _libc_fpxreg {
	unsigned short significand[4];
	unsigned short exponent;
	unsigned short padding[3];
	};

	struct _libc_xmmreg {
	uint32_t element[4];
	};

	struct _libc_fpstate {
	uint16_t cwd;
	uint16_t swd;
	uint16_t ftw;
	uint16_t fop;
	uint64_t rip;
	uint64_t rdp;
	uint32_t mxcsr;
	uint32_t mxcr_mask;
	struct _libc_fpxreg _st[8];
	struct _libc_xmmreg _xmm[16];
	uint32_t padding[24];
	};

	typedef struct _libc_fpstate* fpregset_t;

	typedef struct {
	gregset_t gregs;
	fpregset_t fpregs;
	unsigned long __reserved1[8];
	} mcontext_t;

	typedef struct ucontext {
	unsigned long uc_flags;
	struct ucontext* uc_link;
	stack_t uc_stack;
	mcontext_t uc_mcontext;
	union {
	sigset_t uc_sigmask;
	sigset64_t uc_sigmask64;
	};
	struct _libc_fpstate __fpregs_mem;
	} ucontext_t;

	#elif defined(__riscv)

	#define NGREG 32

	#if defined(__USE_GNU)

	enum {
	REG_PC = 0,
	#define REG_PC REG_PC
	REG_RA = 1,
	#define REG_RA REG_RA
	REG_SP = 2,
	#define REG_SP REG_SP
	REG_TP = 4,
	#define REG_TP REG_TP
	REG_S0 = 8,
	#define REG_S0 REG_S0
	REG_A0 = 10,
	#define REG_A0 REG_A0
	};

	#endif // defined(__USE_GNU)

	typedef unsigned long __riscv_mc_gp_state[NGREG];

	typedef unsigned long greg_t;
	typedef unsigned long gregset_t[NGREG];
	typedef union __riscv_mc_fp_state fpregset_t;

	/* These match the kernel <asm/ptrace.h> types but with different names. */

	struct __riscv_mc_f_ext_state {
	uint32_t __f[32];
	uint32_t __fcsr;
	};

	struct __riscv_mc_d_ext_state {
	uint64_t __f[32];
	uint32_t __fcsr;
	};

	struct __riscv_mc_q_ext_state {
	uint64_t __f[64] __attribute__((__aligned__(16)));
	uint32_t __fcsr;
	uint32_t __reserved[3];
	};

	union __riscv_mc_fp_state {
	struct __riscv_mc_f_ext_state __f;
	struct __riscv_mc_d_ext_state __d;
	struct __riscv_mc_q_ext_state __q;
	};

	/* This matches the kernel <asm/sigcontext.h> but with different names. */

	typedef struct mcontext_t {
	__riscv_mc_gp_state __gregs;
	union __riscv_mc_fp_state __fpregs;
	} mcontext_t;

	/* This matches the kernel <asm/ucontext.h> but using mcontext_t. */

	typedef struct ucontext {
	unsigned long uc_flags;
	struct ucontext* uc_link;
	stack_t uc_stack;
	union {
	sigset_t uc_sigmask;
	sigset64_t uc_sigmask64;
	};
	/* The kernel adds extra padding here to allow sigset_t to grow. */
	char __padding[128 - sizeof(sigset_t)];
	mcontext_t uc_mcontext;
	} ucontext_t;

	#endif

	__END_DECLS