134 lines
3.5 KiB
C
134 lines
3.5 KiB
C
/* Copyright (c) 1993, 1994 Richard Kelsey and Jonathan Rees.
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See file COPYING. */
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/* Modified by Olin Shivers.
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****************************
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** New flag set:
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** \ <fname> meta-arg (a single backslash char)
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** -i <image> terminates arg scanning (necessary for scripts)
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*/
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#include <stdio.h>
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#include <stdlib.h>
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/* I bumped this up from 1.5 Mcell because the debugging info put us over
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** the top. -Olin
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*/
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#if !defined(DEFAULT_HEAP_SIZE)
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/* 4 megacell = 16 megabytes (8 meg per semispace) */
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#define DEFAULT_HEAP_SIZE 4000000L
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#endif
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#if !defined(DEFAULT_STACK_SIZE)
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/* 2500 cells = 10000 bytes */
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#define DEFAULT_STACK_SIZE 2500L
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#endif
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#if defined(STATIC_AREAS)
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#define DEFAULT_IMAGE_NAME NULL
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#else
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/* DEFAULT_IMAGE_NAME should be defined using the -D switch to cc. */
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#if !defined(DEFAULT_IMAGE_NAME)
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#define DEFAULT_IMAGE_NAME "s48.image"
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#endif
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#endif /* STATIC_AREAS */
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char *object_file; /* specified via a command line argument */
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char *reloc_file; /* dynamic loading will set this */
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char *prog_name;
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char ** process_args(char **argv,
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long *heap_size,
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long *stack_size,
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char **object_file,
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char **image_name);
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main(argc, argv)
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int argc; char **argv;
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{
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char **argp;
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char *image_name = DEFAULT_IMAGE_NAME;
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long heap_size = DEFAULT_HEAP_SIZE; /* in numbers of cells */
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long stack_size = DEFAULT_STACK_SIZE; /* in numbers of cells */
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long return_value;
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extern void sysdep_init();
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extern long required_init_space();
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extern void initialize_vm();
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extern long call_startup_procedure();
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extern long check_image_header();
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extern long read_image();
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extern void register_static_areas();
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void *heap, *stack;
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long required_heap_size, startup_proc;
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#if defined(STATIC_AREAS)
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extern long entry;
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extern long p_count, *p_areas[], p_sizes[];
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extern long i_count, *i_areas[], i_sizes[];
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#endif
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long vm_argc = 0;
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prog_name = *argv++; /* Save program name. */
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object_file = reloc_file = NULL;
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argv=process_args(argv,
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&heap_size, &stack_size,
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&object_file, &image_name);
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for(argc=0, argp=argv; *argp; argc++, argp++); /* Recompute argc. */
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sysdep_init();
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scheme48_init();
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if (image_name == NULL)
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required_heap_size = 0;
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else {
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/* check_image_header returns number of bytes; required_heap_size
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is number of cells. */
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required_heap_size = check_image_header(image_name) >> 2;
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if (-1 == required_heap_size) {
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fprintf(stderr, "image file %s is unusable\n", image_name);
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return 1; }
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}
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required_heap_size += required_init_space(argv, vm_argc);
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/* two semi-spaces, plus we want some room to maneuver */
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if (heap_size < 4 * required_heap_size) {
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fprintf(stderr, "heap size %ld cells is too small, using %ld cells\n",
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heap_size, 4 * required_heap_size);
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heap_size = 4 * required_heap_size; }
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heap = (void *) malloc(heap_size * sizeof(long));
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stack = (void *) malloc(stack_size * sizeof(long));
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if (!heap || !stack) {
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fprintf(stderr, "system is out of memory\n");
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return 1; }
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initialize_vm(heap, heap_size, stack, stack_size);
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#if defined(STATIC_AREAS)
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if (image_name == NULL) {
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register_static_areas(p_count, p_areas, p_sizes,
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i_count, i_areas, i_sizes);
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startup_proc = entry;
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} else
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startup_proc = read_image(image_name, 0L);
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#else
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startup_proc = read_image(image_name, 0L);
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#endif
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return_value = call_startup_procedure(startup_proc, argv, argc);
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if (reloc_file != NULL)
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if (0 != unlink(reloc_file))
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fprintf(stderr, "unable to delete file %s\n", reloc_file);
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return(return_value);
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}
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