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OS/2 Shareware BBS: 10 Tools
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scheme-7_5_17-src.zip
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scheme-7.5.17
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microcode
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osscheme.c
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C/C++ Source or Header
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2000-12-05
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/* -*-C-*-
$Id: osscheme.c,v 1.11 2000/12/05 21:23:47 cph Exp $
Copyright (c) 1990-2000 Massachusetts Institute of Technology
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "scheme.h"
#include "prims.h"
#include "osscheme.h"
extern void
EXFUN (signal_error_from_primitive, (long error_code));
void
DEFUN_VOID (error_out_of_channels)
{
signal_error_from_primitive (ERR_OUT_OF_FILE_HANDLES);
}
void
DEFUN_VOID (error_out_of_processes)
{
signal_error_from_primitive (ERR_OUT_OF_FILE_HANDLES);
}
void
DEFUN_VOID (error_unimplemented_primitive)
{
signal_error_from_primitive (ERR_UNDEFINED_PRIMITIVE);
}
void
DEFUN_VOID (error_floating_point_exception)
{
signal_error_from_primitive (ERR_FLOATING_OVERFLOW);
}
int
DEFUN_VOID (executing_scheme_primitive_p)
{
return (PRIMITIVE_P (Regs [REGBLOCK_PRIMITIVE]));
}
#ifdef __OS2__
void
DEFUN_VOID (request_attention_interrupt)
{
REQUEST_INTERRUPT (INT_Global_1);
}
int
DEFUN_VOID (test_and_clear_attention_interrupt)
{
long code;
GRAB_INTERRUPT_REGISTERS ();
code = (FETCH_INTERRUPT_CODE ());
CLEAR_INTERRUPT_NOLOCK (INT_Global_1);
RELEASE_INTERRUPT_REGISTERS ();
return ((code & INT_Global_1) != 0);
}
#endif /* __OS2__ */
void
DEFUN_VOID (request_character_interrupt)
{
REQUEST_INTERRUPT (INT_Character);
}
void
DEFUN_VOID (request_timer_interrupt)
{
REQUEST_INTERRUPT (INT_Timer);
}
void
DEFUN_VOID (request_suspend_interrupt)
{
REQUEST_INTERRUPT (INT_Suspend);
return;
}
int
DEFUN_VOID (pending_interrupts_p)
{
return (INTERRUPT_PENDING_P (INT_Mask));
}
void
DEFUN_VOID (deliver_pending_interrupts)
{
if (INTERRUPT_PENDING_P (INT_Mask))
signal_interrupt_from_primitive ();
return;
}
long
DEFUN_VOID (get_interrupt_mask)
{
return (FETCH_INTERRUPT_MASK ());
}
void
DEFUN (set_interrupt_mask, (mask), long mask)
{
SET_INTERRUPT_MASK (mask & INT_Mask);
return;
}
void
DEFUN (debug_back_trace, (stream), outf_channel stream)
{
outf (stream, "*** Scheme Microcode Back Trace: ***\n");
Back_Trace (stream);
outf (stream, "*** End of Back Trace ***\n");
outf_flush (stream);
return;
}
void
DEFUN (debug_examine_memory, (address, label),
long address AND
CONST char * label)
{
Print_Expression ((* ((SCHEME_OBJECT *) address)), ((char *) label));
return;
}