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eae2438d2b
* libguile/vm-engine.c (VM_CHECK_OBJECT, VM_CHECK_FREE_VARIABLES): Set to 0 for both engines. These are really internal debugging variables, which don't affect user-visible features, provided that the compiler is correct of course. (VM_CHECK_UNDERFLOW): New var, also off by default: whether to check for stack underflow when popping values. (vm_engine): Don't declare object_count if we are not checking object table accesses. * libguile/vm-engine.h (CACHE_PROGRAM): Don't muck with object_count if we are not checking object table accesses. (CHECK_UNDERFLOW, PRE_CHECK_UNDERFLOW): Nop out if we are not checking underflow. (POP2, POP3): New macros which check for underflow before popping more than one value. * libguile/vm-i-loader.c (load_array): * libguile/vm-i-scheme.c (set_car, set_cdr, vector_set, slot_set) (BV_SET_WITH_ENDIANNESS, BV_FIXABLE_INT_SET, BV_INT_SET) (BV_FLOAT_SET): * libguile/vm-i-system.c (partial_cont_call, fix_closure, prompt) (fluid_set): Use POP2 / POP3. (local_set, long_local_set): Pop to locals instead of using values on the stack then dropping; allows for underflow to be checked before the value is accessed. (BR): Don't NULLSTACK or DROP after the operation. (br_if, br_if_not, br_if_eq, br_if_not_eq, br_if_null) (br_if_not_null): Pop to locals before doing the compare and jump.
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/* Copyright (C) 2001,2008,2009,2010,2011 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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/* FIXME! Need to check that the fetch is within the current program */
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/* This file is included in vm_engine.c */
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VM_DEFINE_LOADER (101, load_number, "load-number")
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{
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size_t len;
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FETCH_LENGTH (len);
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SYNC_REGISTER ();
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PUSH (scm_string_to_number (scm_from_locale_stringn ((char *)ip, len),
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SCM_UNDEFINED /* radix = 10 */));
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/* Was: scm_istring2number (ip, len, 10)); */
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ip += len;
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NEXT;
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}
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VM_DEFINE_LOADER (102, load_string, "load-string")
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{
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size_t len;
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char *buf;
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FETCH_LENGTH (len);
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SYNC_REGISTER ();
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PUSH (scm_i_make_string (len, &buf, 1));
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memcpy (buf, (char *) ip, len);
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ip += len;
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NEXT;
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}
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VM_DEFINE_LOADER (103, load_symbol, "load-symbol")
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{
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size_t len;
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FETCH_LENGTH (len);
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SYNC_REGISTER ();
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/* FIXME: should be scm_from_latin1_symboln */
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PUSH (scm_from_latin1_symboln ((const char*)ip, len));
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ip += len;
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NEXT;
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}
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VM_DEFINE_LOADER (104, load_program, "load-program")
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{
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scm_t_uint32 len;
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SCM objs, objcode;
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POP (objs);
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SYNC_REGISTER ();
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if (scm_is_vector (objs) && scm_is_false (scm_c_vector_ref (objs, 0)))
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scm_c_vector_set_x (objs, 0, scm_current_module ());
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objcode = scm_c_make_objcode_slice (SCM_PROGRAM_OBJCODE (fp[-1]), ip);
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len = sizeof (struct scm_objcode) + SCM_OBJCODE_TOTAL_LEN (objcode);
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PUSH (scm_make_program (objcode, objs, SCM_BOOL_F));
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ip += len;
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NEXT;
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}
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VM_DEFINE_INSTRUCTION (105, link_now, "link-now", 0, 1, 1)
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{
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SCM what;
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POP (what);
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SYNC_REGISTER ();
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PUSH (resolve_variable (what, scm_current_module ()));
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NEXT;
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}
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VM_DEFINE_LOADER (106, load_array, "load-array")
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{
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SCM type, shape;
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size_t len;
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FETCH_LENGTH (len);
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POP2 (shape, type);
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SYNC_REGISTER ();
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PUSH (scm_from_contiguous_typed_array (type, shape, ip, len));
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ip += len;
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NEXT;
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}
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VM_DEFINE_LOADER (107, load_wide_string, "load-wide-string")
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{
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size_t len;
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scm_t_wchar *wbuf;
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FETCH_LENGTH (len);
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if (SCM_UNLIKELY (len % 4))
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{
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finish_args = scm_list_1 (scm_from_size_t (len));
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goto vm_error_bad_wide_string_length;
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}
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SYNC_REGISTER ();
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PUSH (scm_i_make_wide_string (len / 4, &wbuf, 1));
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memcpy ((char *) wbuf, (char *) ip, len);
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ip += len;
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NEXT;
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}
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/*
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(defun renumber-ops ()
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"start from top of buffer and renumber 'VM_DEFINE_FOO (\n' sequences"
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(interactive "")
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(save-excursion
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(let ((counter 100)) (goto-char (point-min))
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(while (re-search-forward "^VM_DEFINE_[^ ]+ (\\([^,]+\\)," (point-max) t)
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(replace-match
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(number-to-string (setq counter (1+ counter)))
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t t nil 1)))))
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*/
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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