src/runtime/hppa-linux-os.c

   1 /*
   2  * This is the HPPA Linux 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 size_t os_vm_page_size;
  39
  40 #ifdef LISP_FEATURE_SB_THREAD
  41 #error "Define threading support functions"
  42 #else
  43 int arch_os_thread_init(struct thread *thread) {
  44     return 1;                  /* success */
  45 }
  46 int arch_os_thread_cleanup(struct thread *thread) {
  47     return 1;                  /* success */
  48 }
  49 #endif
  50
  51 os_context_register_t   *
  52 os_context_register_addr(os_context_t *context, int offset)
  53 {
  54     if (offset == 0) {
  55         /* KLUDGE: I'm not sure, but it's possible that Linux puts the
  56            contents of the Processor Status Word in the (wired-zero)
  57            slot in the mcontext. In any case, the following is
  58            unlikely to do any harm: */
  59         static int zero;
  60         zero = 0;
  61         return &zero;
  62     } else {
  63         return &(((struct sigcontext *) &(context->uc_mcontext))->sc_gr[offset]);
  64     }
  65 }
  66
  67 os_context_register_t *
  68 os_context_pc_addr(os_context_t *context)
  69 {
  70     /* Why do I get all the silly ports? -- CSR, 2002-08-11 */
  71     return &(((struct sigcontext *) &(context->uc_mcontext))->sc_iaoq[0]);
  72 }
  73
  74 os_context_register_t *
  75 os_context_npc_addr(os_context_t *context)
  76 {
  77     return &(((struct sigcontext *) &(context->uc_mcontext))->sc_iaoq[1]);
  78 }
  79
  80 sigset_t *
  81 os_context_sigmask_addr(os_context_t *context)
  82 {
  83     return &(context->uc_sigmask);
  84 }
  85
  86 void
  87 os_restore_fp_control(os_context_t *context)
  88 {
  89     /* FIXME: Probably do something. */
  90 }
  91
  92 void
  93 os_flush_icache(os_vm_address_t address, os_vm_size_t length)
  94 {
  95     /* FIXME: Maybe this is OK. */
  96     sanctify_for_execution(address,length);
  97 }