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- /* Copyright (C) 1989, 1990 Aladdin Enterprises. All rights reserved.
- Distributed by Free Software Foundation, Inc.
-
- This file is part of Ghostscript.
-
- Ghostscript is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY. No author or distributor accepts responsibility
- to anyone for the consequences of using it or for whether it serves any
- particular purpose or works at all, unless he says so in writing. Refer
- to the Ghostscript General Public License for full details.
-
- Everyone is granted permission to copy, modify and redistribute
- Ghostscript, but only under the conditions described in the Ghostscript
- General Public License. A copy of this license is supposed to have been
- given to you along with Ghostscript so you can know your rights and
- responsibilities. It should be in a file named COPYING. Among other
- things, the copyright notice and this notice must be preserved on all
- copies. */
-
- /* utrace.c */
- /* Dummy tracing package for Unix C */
- #include <stdio.h>
- #include <setjmp.h>
- #include "std.h"
- #include "cframe_.h"
-
- /* This file replaces trace.c for Unix and VMS. */
- /* It has only the stack parsing functionality of trace.c -- */
- /* the tracing procedures are stubs. */
-
- char *
- strupr(char *str)
- { return str;
- }
-
- /* Open the map file */
- FILE *
- trace_open_map(char *mapname, long *preloc)
- { return NULL;
- }
-
- /* Enumerate a symbol file */
- char *
- trace_next_symbol(char **paddr, FILE *mapf)
- { return NULL;
- }
-
-
- /* Look up a symbol in a file */
- char *
- trace_find_symbol(char *name, FILE *mapf)
- { return NULL;
- }
-
- int trace_flush_flag;
-
- /* Trace a named procedure */
- int
- trace_name(char *name, FILE *mapf, char *arg_format, int retsize)
- { return -1;
- }
-
- /* Trace a procedure */
- int
- trace(void (*proc)(), char *name, char *arg_format, int retsize)
- { return -1;
- }
-
- /* ------ Stack parsing ------ */
-
- /* Forward declarations */
- char *stack_next_frame(P1(char *));
-
- /* Get the address of the caller's frame */
- char *
- stack_top_frame()
- #ifdef ARC
- { return NULL; }
- #else
- { jmp_buf buf;
- setjmp(buf); /* acquire registers */
- return stack_next_frame(cstack_top_frame(buf));
- }
- #endif
-
- /* Get the return address of a frame. */
- unsigned long
- stack_return(char *bp)
- { return *(unsigned long *)(bp + 16);
- }
-
- /* Get the address of the next higher frame, */
- /* or 0 if there is none. */
- char *
- stack_next_frame(char *bp)
- #ifdef ARC
- { return NULL; }
- #else
- { char *nbp = cstack_next_frame(bp);
- if ( nbp < bp ) return 0;
- return nbp;
- }
- #endif
-