mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-04-30 11:50:28 +02:00
e06e857c8d
* libguile/vm-engine.c (VM_PUSH_DEBUG_FRAMES): New knob, if true we much with the scm_i_last_debug_frame when entering the VM, because sometimes the evaluator doesn't do it for us. (VM_ENGINE): Plug through debug frame fondling. Now, program exit comes back to the main text. Rename err_args to finish_args, and reuse for the return value. * libguile/vm-engine.h (PUSH_LIST): * libguile/vm-i-loader.c: * libguile/vm-i-scheme.c: * libguile/vm-i-system.c: Update for finish_args. (halt): goto vm_done, now, instead of returning directly.
288 lines
8.2 KiB
C
288 lines
8.2 KiB
C
/* Copyright (C) 2001 Free Software Foundation, Inc.
|
|
*
|
|
* 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, 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 software; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
|
* Boston, MA 02111-1307 USA
|
|
*
|
|
* As a special exception, the Free Software Foundation gives permission
|
|
* for additional uses of the text contained in its release of GUILE.
|
|
*
|
|
* The exception is that, if you link the GUILE library with other files
|
|
* to produce an executable, this does not by itself cause the
|
|
* resulting executable to be covered by the GNU General Public License.
|
|
* Your use of that executable is in no way restricted on account of
|
|
* linking the GUILE library code into it.
|
|
*
|
|
* This exception does not however invalidate any other reasons why
|
|
* the executable file might be covered by the GNU General Public License.
|
|
*
|
|
* This exception applies only to the code released by the
|
|
* Free Software Foundation under the name GUILE. If you copy
|
|
* code from other Free Software Foundation releases into a copy of
|
|
* GUILE, as the General Public License permits, the exception does
|
|
* not apply to the code that you add in this way. To avoid misleading
|
|
* anyone as to the status of such modified files, you must delete
|
|
* this exception notice from them.
|
|
*
|
|
* If you write modifications of your own for GUILE, it is your choice
|
|
* whether to permit this exception to apply to your modifications.
|
|
* If you do not wish that, delete this exception notice. */
|
|
|
|
/* This file is included in vm.c multiple times */
|
|
|
|
#if (VM_ENGINE == SCM_VM_REGULAR_ENGINE)
|
|
#define VM_USE_HOOKS 0 /* Various hooks */
|
|
#define VM_USE_CLOCK 0 /* Bogoclock */
|
|
#define VM_CHECK_EXTERNAL 1 /* Check external link */
|
|
#define VM_CHECK_OBJECT 1 /* Check object table */
|
|
#define VM_PUSH_DEBUG_FRAMES 0 /* Push frames onto the evaluator debug stack */
|
|
#elif (VM_ENGINE == SCM_VM_DEBUG_ENGINE)
|
|
#define VM_USE_HOOKS 1
|
|
#define VM_USE_CLOCK 1
|
|
#define VM_CHECK_EXTERNAL 1
|
|
#define VM_CHECK_OBJECT 1
|
|
#define VM_PUSH_DEBUG_FRAMES 1
|
|
#else
|
|
#error unknown debug engine VM_ENGINE
|
|
#endif
|
|
|
|
#include "vm-engine.h"
|
|
|
|
|
|
static SCM
|
|
VM_NAME (struct scm_vm *vp, SCM program, SCM *argv, int nargs)
|
|
{
|
|
/* VM registers */
|
|
register scm_byte_t *ip IP_REG; /* instruction pointer */
|
|
register SCM *sp SP_REG; /* stack pointer */
|
|
register SCM *fp FP_REG; /* frame pointer */
|
|
|
|
/* Cache variables */
|
|
struct scm_objcode *bp = NULL; /* program base pointer */
|
|
SCM external = SCM_EOL; /* external environment */
|
|
SCM *objects = NULL; /* constant objects */
|
|
size_t object_count = 0; /* length of OBJECTS */
|
|
SCM *stack_base = vp->stack_base; /* stack base address */
|
|
SCM *stack_limit = vp->stack_limit; /* stack limit address */
|
|
|
|
/* Internal variables */
|
|
int nvalues = 0;
|
|
long start_time = scm_c_get_internal_run_time ();
|
|
SCM finish_args; /* used both for returns: both in error
|
|
and normal situations */
|
|
#if VM_USE_HOOKS
|
|
SCM hook_args = SCM_EOL;
|
|
#endif
|
|
|
|
#ifdef HAVE_LABELS_AS_VALUES
|
|
static void **jump_table = NULL;
|
|
#endif
|
|
|
|
#if VM_PUSH_DEBUG_FRAMES
|
|
scm_t_debug_frame debug;
|
|
scm_t_debug_info debug_vect_body;
|
|
debug.status = SCM_VOIDFRAME;
|
|
#endif
|
|
|
|
#ifdef HAVE_LABELS_AS_VALUES
|
|
if (SCM_UNLIKELY (!jump_table))
|
|
{
|
|
int i;
|
|
jump_table = malloc (SCM_VM_NUM_INSTRUCTIONS * sizeof(void*));
|
|
for (i = 0; i < SCM_VM_NUM_INSTRUCTIONS; i++)
|
|
jump_table[i] = &&vm_error_bad_instruction;
|
|
#define VM_INSTRUCTION_TO_LABEL 1
|
|
#include "vm-expand.h"
|
|
#include "vm-i-system.i"
|
|
#include "vm-i-scheme.i"
|
|
#include "vm-i-loader.i"
|
|
#undef VM_INSTRUCTION_TO_LABEL
|
|
}
|
|
#endif
|
|
|
|
/* Initialization */
|
|
{
|
|
SCM prog = program;
|
|
|
|
/* Boot program */
|
|
program = vm_make_boot_program (nargs);
|
|
|
|
#if VM_PUSH_DEBUG_FRAMES
|
|
debug.prev = scm_i_last_debug_frame ();
|
|
if (!(debug.prev && debug.prev->status == SCM_APPLYFRAME
|
|
&& debug.prev->vect[0].a.proc != prog))
|
|
{
|
|
debug.status = SCM_APPLYFRAME;
|
|
debug.vect = &debug_vect_body;
|
|
debug.vect[0].a.proc = program; /* the boot program */
|
|
debug.vect[0].a.args = SCM_EOL;
|
|
scm_i_set_last_debug_frame (&debug);
|
|
}
|
|
#endif
|
|
|
|
/* Initial frame */
|
|
CACHE_REGISTER ();
|
|
CACHE_PROGRAM ();
|
|
PUSH (program);
|
|
NEW_FRAME ();
|
|
|
|
/* Initial arguments */
|
|
PUSH (prog);
|
|
if (SCM_UNLIKELY (sp + nargs >= stack_limit))
|
|
goto vm_error_too_many_args;
|
|
while (nargs--)
|
|
PUSH (*argv++);
|
|
}
|
|
|
|
/* Let's go! */
|
|
BOOT_HOOK ();
|
|
NEXT;
|
|
|
|
#ifndef HAVE_LABELS_AS_VALUES
|
|
vm_start:
|
|
switch ((*ip++) & SCM_VM_INSTRUCTION_MASK) {
|
|
#endif
|
|
|
|
#include "vm-expand.h"
|
|
#include "vm-i-system.c"
|
|
#include "vm-i-scheme.c"
|
|
#include "vm-i-loader.c"
|
|
|
|
#ifndef HAVE_LABELS_AS_VALUES
|
|
default:
|
|
goto vm_error_bad_instruction;
|
|
}
|
|
#endif
|
|
|
|
|
|
vm_done:
|
|
SYNC_ALL ();
|
|
#if VM_PUSH_DEBUG_FRAMES
|
|
if (debug.status == SCM_APPLYFRAME)
|
|
scm_i_set_last_debug_frame (debug.prev);
|
|
#endif
|
|
return finish_args;
|
|
|
|
/* Errors */
|
|
{
|
|
SCM err_msg;
|
|
|
|
vm_error_bad_instruction:
|
|
err_msg = scm_from_locale_string ("VM: Bad instruction: ~A");
|
|
finish_args = SCM_LIST1 (scm_from_uchar (ip[-1]));
|
|
goto vm_error;
|
|
|
|
vm_error_unbound:
|
|
err_msg = scm_from_locale_string ("VM: Unbound variable: ~A");
|
|
goto vm_error;
|
|
|
|
vm_error_wrong_type_arg:
|
|
err_msg = scm_from_locale_string ("VM: Wrong type argument");
|
|
finish_args = SCM_EOL;
|
|
goto vm_error;
|
|
|
|
vm_error_too_many_args:
|
|
err_msg = scm_from_locale_string ("VM: Too many arguments");
|
|
finish_args = SCM_LIST1 (scm_from_int (nargs));
|
|
goto vm_error;
|
|
|
|
vm_error_wrong_num_args:
|
|
/* nargs and program are valid */
|
|
SYNC_ALL ();
|
|
scm_wrong_num_args (program);
|
|
/* shouldn't get here */
|
|
goto vm_error;
|
|
|
|
vm_error_wrong_type_apply:
|
|
err_msg = scm_from_locale_string ("VM: Wrong type to apply: ~S "
|
|
"[IP offset: ~a]");
|
|
finish_args = SCM_LIST2 (program,
|
|
SCM_I_MAKINUM (ip - bp->base));
|
|
goto vm_error;
|
|
|
|
vm_error_stack_overflow:
|
|
err_msg = scm_from_locale_string ("VM: Stack overflow");
|
|
finish_args = SCM_EOL;
|
|
goto vm_error;
|
|
|
|
vm_error_stack_underflow:
|
|
err_msg = scm_from_locale_string ("VM: Stack underflow");
|
|
finish_args = SCM_EOL;
|
|
goto vm_error;
|
|
|
|
vm_error_improper_list:
|
|
err_msg = scm_from_locale_string ("VM: Attempt to unroll an improper list: tail is ~A");
|
|
goto vm_error;
|
|
|
|
vm_error_not_a_pair:
|
|
SYNC_ALL ();
|
|
scm_wrong_type_arg_msg (FUNC_NAME, 1, finish_args, "pair");
|
|
/* shouldn't get here */
|
|
goto vm_error;
|
|
|
|
vm_error_no_values:
|
|
err_msg = scm_from_locale_string ("VM: 0-valued return");
|
|
finish_args = SCM_EOL;
|
|
goto vm_error;
|
|
|
|
vm_error_not_enough_values:
|
|
err_msg = scm_from_locale_string ("VM: Not enough values for mv-bind");
|
|
finish_args = SCM_EOL;
|
|
goto vm_error;
|
|
|
|
vm_error_no_such_module:
|
|
err_msg = scm_from_locale_string ("VM: No such module: ~A");
|
|
goto vm_error;
|
|
|
|
#if VM_CHECK_IP
|
|
vm_error_invalid_address:
|
|
err_msg = scm_from_locale_string ("VM: Invalid program address");
|
|
finish_args = SCM_EOL;
|
|
goto vm_error;
|
|
#endif
|
|
|
|
#if VM_CHECK_EXTERNAL
|
|
vm_error_external:
|
|
err_msg = scm_from_locale_string ("VM: Invalid external access");
|
|
finish_args = SCM_EOL;
|
|
goto vm_error;
|
|
#endif
|
|
|
|
#if VM_CHECK_OBJECT
|
|
vm_error_object:
|
|
err_msg = scm_from_locale_string ("VM: Invalid object table access");
|
|
finish_args = SCM_EOL;
|
|
goto vm_error;
|
|
#endif
|
|
|
|
vm_error:
|
|
SYNC_ALL ();
|
|
|
|
scm_ithrow (sym_vm_error, SCM_LIST3 (sym_vm_run, err_msg, finish_args), 1);
|
|
}
|
|
|
|
abort (); /* never reached */
|
|
}
|
|
|
|
#undef VM_USE_HOOKS
|
|
#undef VM_USE_CLOCK
|
|
#undef VM_CHECK_EXTERNAL
|
|
#undef VM_CHECK_OBJECT
|
|
#undef VM_PUSH_DEBUG_FRAMES
|
|
|
|
/*
|
|
Local Variables:
|
|
c-file-style: "gnu"
|
|
End:
|
|
*/
|