netscape-revival

nspr-/include/os/nec.h

#ifndef nspr_nec_defs_h___
#define nspr_nec_defs_h___
 
#define PR_LINKER_ARCH  "nec"
 
#define _MD_GC_VMBASE           0x40000000
#define _MD_STACK_VMBASE        0x50000000
#define _MD_DEFAULT_STACK_SIZE  65536L
 
#if defined(SW_THREADS)
#include <ucontext.h>
#include <sys/regset.h>
 
#define PR_NUM_GCREGS   NGREG
#define PR_CONTEXT_TYPE ucontext_t
 
#define CONTEXT(_thread) (&(_thread)->context)
 
#define PR_GetSP(_t)    (_t)->context.uc_mcontext.gregs[CXT_SP]
 
/*
** Initialize the thread context preparing it to execute "e(o,a)"
*/
#define _MD_INIT_CONTEXT(thread, e, o, a)                           \
{                                                                   \
    getcontext(CONTEXT(thread));                                    \
    CONTEXT(thread)->uc_stack.ss_sp = (char*) (thread)->stack->stackBottom; \
    CONTEXT(thread)->uc_stack.ss_size = (thread)->stack->stackSize; \
    PR_GetSP(thread) = (greg_t) (thread)->stack->stackTop - 64;             \
    makecontext(CONTEXT(thread), HopToad, 3, e, o, a);              \
}
 
#define _MD_SWITCH_CONTEXT(_thread)      \
    if (!getcontext(CONTEXT(_thread))) { \
        (_thread)->errcode = errno;      \
        _PR_Schedule();                  \
    }
 
/*
** Restore a thread context, saved by _MD_SWITCH_CONTEXT
*/
#define _MD_RESTORE_CONTEXT(_thread)   \
{                                      \
    ucontext_t *uc = CONTEXT(_thread); \
    uc->uc_mcontext.gregs[CXT_V0] = 1; \
    uc->uc_mcontext.gregs[CXT_A3] = 0; \
    _pr_current_thread = _thread;      \
    PR_LOG(SCHED, warn, ("Scheduled")); \
    errno = (_thread)->errcode;        \
    setcontext(uc);                    \
}
 
#endif /* SW_THREADS */
 
#undef  HAVE_STACK_GROWING_UP
#undef  HAVE_LONG_LONG
#undef  HAVE_ALIGNED_DOUBLES
#undef  HAVE_ALIGNED_LONGLONGS
#define HAVE_DLL
#define USE_DLFCN
#define NEED_TIME_R
 
#define S_ISSOCK(mode)   ((mode&0xF000) == 0xC000)
 
#endif /* nspr_nec_defs_h___ */