src/runtime/sparc-bsd-os.c

   1 /*
   2  * This is the SPARC BSD incarnation of arch-dependent OS-dependent
   3  * routines. See also "linux-os.c".
   4  */
   5
   6 /*
   7  * This software is part of the SBCL system. See the README file for
   8  * more information.
   9  *
  10  * This software is derived from the CMU CL system, which was
  11  * written at Carnegie Mellon University and released into the
  12  * public domain. The software is in the public domain and is
  13  * provided with absolutely no warranty. See the COPYING and CREDITS
  14  * files for more information.
  15  */
  16
  17 #include <stdio.h>
  18 #include <sys/param.h>
  19 #include <sys/file.h>
  20 #include "sbcl.h"
  21 #include "./signal.h"
  22 #include "os.h"
  23 #include "arch.h"
  24 #include "globals.h"
  25 #include "interrupt.h"
  26 #include "interr.h"
  27 #include "lispregs.h"
  28 #include <sys/socket.h>
  29 #include <sys/utsname.h>
  30
  31 #include <sys/types.h>
  32 #include <signal.h>
  33 #include <sys/time.h>
  34 #include <sys/stat.h>
  35 #include <unistd.h>
  36
  37 #include "validate.h"
  38
  39 #ifdef LISP_FEATURE_SB_THREAD
  40 #error "Define threading support functions"
  41 #else
  42 int arch_os_thread_init(struct thread *thread) {
  43    return 1;                   /* success */
  44 }
  45 int arch_os_thread_cleanup(struct thread *thread) {
  46    return 1;                   /* success */
  47 }
  48 #endif
  49
  50 os_context_register_t   *
  51 os_context_register_addr(os_context_t *context, int offset)
  52 {
  53    if (offset == 0) {
  54        static int zero;
  55        zero = 0;
  56        return &zero;
  57    } else if (offset < 16) {
  58        return &context->uc_mcontext.__gregs[offset+3];
  59    } else if (offset < 32) {
  60        /* FIXME: You know, this (int *) stuff looks decidedly
  61           dubious */
  62        int *sp = (int*) _UC_MACHINE_SP(context);
  63        return &(sp[offset-16]);
  64    } else {
  65        return 0;
  66    }
  67 }
  68
  69 os_context_register_t *
  70 os_context_pc_addr(os_context_t *context)
  71 {
  72    return &(context->uc_mcontext.__gregs[_REG_PC]);
  73 }
  74
  75 os_context_register_t *
  76 os_context_npc_addr(os_context_t *context)
  77 {
  78    return &(context->uc_mcontext.__gregs[_REG_nPC]);
  79 }
  80
  81 #ifdef SOLARIS
  82 sigset_t *
  83 os_context_sigmask_addr(os_context_t *context)
  84 {
  85    return &(context->uc_sigmask);
  86 }
  87 #endif
  88
  89 unsigned long
  90 os_context_fp_control(os_context_t *context)
  91 {
  92    return (context->uc_mcontext.__fpregs.__fpu_fsr);
  93 }
  94
  95 void os_flush_icache(os_vm_address_t address, os_vm_size_t length)
  96 {
  97    /* see sparc-assem.S */
  98    sparc_flush_icache(address, length);
  99 }