linux-user/sparc/target_syscall.h

   1 #ifndef SPARC_TARGET_SYSCALL_H
   2 #define SPARC_TARGET_SYSCALL_H
   3
   4 #if defined(TARGET_SPARC64) && !defined(TARGET_ABI32)
   5 struct target_pt_regs {
   6     abi_ulong u_regs[16];
   7     abi_ulong tstate;
   8     abi_ulong pc;
   9     abi_ulong npc;
  10     uint32_t y;
  11     uint32_t magic;
  12 };
  13 #else
  14 struct target_pt_regs {
  15     abi_ulong psr;
  16     abi_ulong pc;
  17     abi_ulong npc;
  18     abi_ulong y;
  19     abi_ulong u_regs[16];
  20 };
  21 #endif
  22
  23 #ifdef TARGET_SPARC64
  24 # define UNAME_MACHINE "sparc64"
  25 #else
  26 # define UNAME_MACHINE "sparc"
  27 #endif
  28 #define UNAME_MINIMUM_RELEASE "2.6.32"
  29
  30 /*
  31  * SPARC kernels don't define this in their Kconfig, but they have the
  32  * same ABI as if they did, implemented by sparc-specific code which fishes
  33  * directly in the u_regs() struct for half the parameters in sparc_do_fork()
  34  * and copy_thread().
  35  */
  36 #define TARGET_CLONE_BACKWARDS
  37 #define TARGET_MCL_CURRENT 0x2000
  38 #define TARGET_MCL_FUTURE  0x4000
  39 #define TARGET_MCL_ONFAULT 0x8000
  40
  41 /*
  42  * For SPARC SHMLBA is determined at runtime in the kernel, and
  43  * libc has to runtime-detect it using the hwcaps.
  44  * See glibc sysdeps/unix/sysv/linux/sparc/getshmlba.
  45  */
  46 #define TARGET_FORCE_SHMLBA
  47
  48 static inline abi_ulong target_shmlba(CPUSPARCState *env)
  49 {
  50 #ifdef TARGET_SPARC64
  51     return MAX(TARGET_PAGE_SIZE, 16 * 1024);
  52 #else
  53     if (!(env->def.features & CPU_FEATURE_FLUSH)) {
  54         return 64 * 1024;
  55     } else {
  56         return 256 * 1024;
  57     }
  58 #endif
  59 }
  60
  61 #endif /* SPARC_TARGET_SYSCALL_H */