bsd-user/aarch64/target_arch_signal.h

   1 /*
   2  * ARM AArch64 specific signal definitions for bsd-user
   3  *
   4  * Copyright (c) 2015 Stacey D. Son <sson at FreeBSD>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef TARGET_ARCH_SIGNAL_H
  21 #define TARGET_ARCH_SIGNAL_H
  22
  23 #include "cpu.h"
  24
  25 #define TARGET_REG_X0   0
  26 #define TARGET_REG_X30  30
  27 #define TARGET_REG_X31  31
  28 #define TARGET_REG_LR   TARGET_REG_X30
  29 #define TARGET_REG_SP   TARGET_REG_X31
  30
  31 #define TARGET_INSN_SIZE    4       /* arm64 instruction size */
  32
  33 /* Size of the signal trampolin code. See _sigtramp(). */
  34 #define TARGET_SZSIGCODE    ((abi_ulong)(9 * TARGET_INSN_SIZE))
  35
  36 /* compare to sys/arm64/include/_limits.h */
  37 #define TARGET_MINSIGSTKSZ  (1024 * 4)                  /* min sig stack size */
  38 #define TARGET_SIGSTKSZ     (TARGET_MINSIGSTKSZ + 32768)  /* recommended size */
  39
  40 /* struct __mcontext in sys/arm64/include/ucontext.h */
  41
  42 struct target_gpregs {
  43     uint64_t    gp_x[30];
  44     uint64_t    gp_lr;
  45     uint64_t    gp_sp;
  46     uint64_t    gp_elr;
  47     uint32_t    gp_spsr;
  48     uint32_t    gp_pad;
  49 };
  50
  51 struct target_fpregs {
  52     Int128      fp_q[32];
  53     uint32_t    fp_sr;
  54     uint32_t    fp_cr;
  55     uint32_t    fp_flags;
  56     uint32_t    fp_pad;
  57 };
  58
  59 struct target__mcontext {
  60     struct target_gpregs mc_gpregs;
  61     struct target_fpregs mc_fpregs;
  62     uint32_t    mc_flags;
  63 #define TARGET_MC_FP_VALID  0x1
  64     uint32_t    mc_pad;
  65     uint64_t    mc_spare[8];
  66 };
  67
  68 typedef struct target__mcontext target_mcontext_t;
  69
  70 #define TARGET_MCONTEXT_SIZE 880
  71 #define TARGET_UCONTEXT_SIZE 960
  72
  73 #include "target_os_ucontext.h"
  74
  75 struct target_sigframe {
  76     target_siginfo_t    sf_si;  /* saved siginfo */
  77     target_ucontext_t   sf_uc;  /* saved ucontext */
  78 };
  79
  80 #define TARGET_SIGSTACK_ALIGN 16
  81
  82 #endif /* TARGET_ARCH_SIGNAL_H */