void unwind_stack_for_throw()
{
for(lref_t *frame = CURRENT_TIB()->frame;
frame != NULL;
frame = fstack_prev_frame(frame))
{
if (fstack_frame_type(frame) == FRAME_UNWIND)
{
dscwritef(DF_SHOW_THROWS, (_T("; DEBUG: throw invoking unwind : ~c&\n"), frame));
apply1(frame[FOFS_UNWIND_AFTER], 0, NULL);
continue;
}
if (fstack_frame_type(frame) != FRAME_ESCAPE)
continue;
if (frame == CURRENT_TIB()->escape_frame)
{
dscwritef(DF_SHOW_THROWS, (_T("; DEBUG: setjmp (from fsp=~c&) to target frame: ~c&\n"), CURRENT_TIB()->fsp, frame));
CURRENT_TIB()->escape_frame = NULL;
CURRENT_TIB()->frame = (lref_t *)frame[FOFS_ESCAPE_FRAME];
CURRENT_TIB()->fsp = CURRENT_TIB()->frame + 1;
longjmp((struct __jmp_buf_tag *)frame[FOFS_ESCAPE_JMPBUF_PTR], 1);
}
}
}
static void show_debug_flags()
{
dscwritef(DF_ALWAYS, ("Available debug flags:\n\n"));
for (size_t ii = 0; debug_flag_env_names[ii].df_env_name; ii++)
dscwritef(DF_ALWAYS, ("* ~cs\n", debug_flag_env_names[ii].df_env_name));
}
static lref_t *find_matching_escape(lref_t *start_frame, lref_t tag)
{
if (CURRENT_TIB()->escape_frame != NULL)
start_frame = fstack_prev_frame(CURRENT_TIB()->escape_frame);
dscwritef(DF_SHOW_THROWS, (_T("; DEBUG: looking for escape tag ~a\n"), tag));
for(lref_t *frame = start_frame; frame != NULL; frame = fstack_prev_frame(frame))
{
if (fstack_frame_type(frame) != FRAME_ESCAPE)
continue;
lref_t ftag = frame[FOFS_ESCAPE_TAG];
dscwritef(DF_SHOW_THROWS, (_T("; DEBUG: frame: ~c&, tag ~a\n"), frame, ftag));
if (NULLP(ftag) || EQ(ftag, tag)) {
return frame;
}
}
dscwritef(DF_SHOW_THROWS, (_T("; DEBUG: No escape frame for tag ~a\n"), tag));
return NULL;
}
void unwind_stack_for_throw()
{
for(lref_t *frame = CURRENT_TIB()->frame; frame != NULL; frame = fstack_prev_frame(frame))
{
if (fstack_frame_type(frame) == FRAME_UNWIND)
{
dscwritef(DF_SHOW_THROWS, (_T("; DEBUG: throw invoking unwind, frame: ~c&\n"), frame));
apply1(frame[FOFS_UNWIND_AFTER], 0, NULL);
continue;
}
if (fstack_frame_type(frame) != FRAME_ESCAPE)
continue;
if (frame == CURRENT_TIB()->escape_frame)
{
jmp_buf *jmpbuf = (jmp_buf *)frame[FOFS_ESCAPE_JMPBUF_PTR];
dscwritef(DF_SHOW_THROWS, (_T("; DEBUG: longjmp to frame: ~c&, jmpbuf: ~c&\n"), frame, jmpbuf));
CURRENT_TIB()->escape_frame = NULL;
CURRENT_TIB()->frame = (lref_t *)frame[FOFS_ESCAPE_FRAME];
CURRENT_TIB()->fsp = CURRENT_TIB()->frame + 1;
longjmp(*jmpbuf, 1);
}
}
}
static void show_vm_args()
{
dscwritef(DF_ALWAYS, ("\nAvailable VM arguments:\n"));
for (size_t ii = 0; vm_arg_names[ii].vm_arg_name; ii++)
dscwritef(DF_ALWAYS, ("* ~cs\n", vm_arg_names[ii].vm_arg_name));
}
static void fast_read_loader_definition(lref_t reader, enum fasl_opcode_t opcode)
{
lref_t symbol_to_define;
fast_read(reader, &symbol_to_define, false);
if (!SYMBOLP(symbol_to_define))
vmerror_fast_read("Expected symbol for definition", reader, symbol_to_define);
lref_t definition;
fast_read(reader, &definition, false);
dscwritef(DF_SHOW_FAST_LOAD_FORMS,
(_T("; DEBUG: FASL defining ~s = ~s\n"), symbol_to_define, definition));
switch (opcode)
{
case FASL_OP_LOADER_DEFINEQ: /* quoted definition, do nothing. */
break;
case FASL_OP_LOADER_DEFINEA0:
definition = apply1(definition, 0, NULL);
break;
default:
panic("invalid opcode in fast_read_loader_definition");
break;
}
lidefine_global(symbol_to_define, definition);
}
lref_t liifasl_load(lref_t reader)
{
if (!FASL_READER_P(reader))
vmerror_wrong_type_n(1, reader);
dscwritef(DF_SHOW_FAST_LOAD_FORMS, (_T("; DEBUG: FASL from : ~a\n"), reader));
lref_t form = NIL;
while (!EOFP(form))
fast_read(reader, &form, true);
dscwritef(DF_SHOW_FAST_LOAD_FORMS, (_T("; DEBUG: done FASL from reader: ~a\n"), reader));
return NIL;
}
lref_t lset_stack_limit(lref_t amount)
{
size_t new_size_limit = 0;
if (!NULLP(amount) && !FALSEP(amount))
new_size_limit = get_c_long(amount);
void *new_limit_obj = sys_set_stack_limit(new_size_limit);
if (!new_size_limit)
{
dscwritef(DF_SHOW_GC, ("stack limit disabled!"));
return boolcons(false);
}
dscwritef(DF_SHOW_GC, ("stack_size = ~cd bytes, [~c&,~c&]\n", new_size_limit, new_limit_obj, sys_get_stack_start()));
return fixcons(new_size_limit);
}
static void load_init_load_files()
{
for (size_t ii = 0; ii < interp.init_load_file_count; ii++) {
lref_t fname = strconsbuf(interp.init_load_file_name[ii]);
dscwritef(DF_ALWAYS, ("; Init Loading ~a...\n", fname));
lref_t port = lopen_raw_input_file(fname);
liifasl_load(lmake_fasl_reader(port));
lclose_port(port);
}
}
enum debug_flag_t debug_flags_from_string(enum debug_flag_t initial,
const _TCHAR * source_name,
const _TCHAR * str)
{
enum debug_flag_t rc = initial;
while (str)
{
if (*str == _T('\0'))
break;
const char *envtokend = strchrnul(str, ',');
bool found = false;
bool remove = false;
if ((str[0] == '-') || (str[0] == '+'))
{
remove = (str[0] == '-');
str++;
}
for (size_t ii = 0; debug_flag_env_names[ii].df_env_name; ii++)
{
if (strncasecmp(str, debug_flag_env_names[ii].df_env_name, envtokend - str) == 0)
{
found = true;
if (remove)
rc = (enum debug_flag_t) (rc & ~debug_flag_env_names[ii].df);
else
rc = (enum debug_flag_t) (rc | debug_flag_env_names[ii].df);
break;
}
}
if (!found)
{
dscwritef(DF_ALWAYS, ("Unknown debug flag while parsing ~cs, starting here: ~cs\n", source_name, str));
show_debug_flags();
panic("Aborting Run");
}
str = (char *) ((*envtokend == '\0') ? NULL : envtokend + 1);
}
return rc;
}
lref_t liset_trap_handler(lref_t trap_id, lref_t new_handler)
{
if (!PROCEDUREP(new_handler))
vmerror_wrong_type_n(2, new_handler);
size_t tid = get_trap_id(trap_id);
interp.trap_handlers[tid] = new_handler;
dscwritef(DF_SHOW_TRAPS,
(_T("; DEBUG: set-trap-handler : ~cS := ~s\n"),
trap_type_name((enum trap_type_t)tid), new_handler));
return new_handler;
}
static void process_vm_argument(_TCHAR * arg_name, _TCHAR * arg_value)
{
for (size_t ii = 0; vm_arg_names[ii].vm_arg_name; ii++)
{
if (_tcscmp(arg_name, vm_arg_names[ii].vm_arg_name) == 0)
{
vm_arg_names[ii].vm_arg_handler(arg_name, arg_value);
return;
}
}
dscwritef(DF_ALWAYS, ("Unknown VM argument: ~cs\n", arg_name));
show_vm_args();
panic("Aborting Run");
}
lref_t vmtrap(enum trap_type_t trap, enum vmt_options_t options, size_t argc, ...)
{
assert((trap > 0) && (trap <= TRAP_LAST));
assert(argc < ARG_BUF_LEN);
dscwritef(DF_SHOW_TRAPS, (_T("; DEBUG: trap : ~cS\n"),
trap_type_name(trap)));
lref_t handler = interp.trap_handlers[trap];
if (!PROCEDUREP(handler))
{
if(!NULLP(handler))
vmtrap_panic(trap, "bad trap handler");
if (!(options & VMT_OPTIONAL_TRAP))
vmtrap_panic(trap, "missing trap handler");
return NIL;
}
lref_t retval = NIL;
va_list args;
va_start(args, argc);
lref_t argv[ARG_BUF_LEN];
argv[0] = fixcons(trap);
argv[1] = fixcons((fixnum_t)CURRENT_TIB()->frame);
for (size_t ii = 2; ii < argc + 2; ii++)
argv[ii] = va_arg(args, lref_t);
va_end(args);
retval = apply1(handler, argc + 2, argv);
if (options & VMT_HANDLER_MUST_ESCAPE)
vmtrap_panic(trap, "trap handler must escape");
return retval;
}
static void fast_read_loader_application(lref_t reader, enum fasl_opcode_t opcode)
{
assert(FASL_READER_P(reader));
size_t argc = 0;
lref_t argv[FAST_LOAD_STACK_DEPTH];
fast_read(reader, &argv[0], false);
if (!(SUBRP(argv[0]) || CLOSUREP(argv[0])))
vmerror_fast_read(_T("Invalid function to apply"), reader, NIL);
if (opcode == FASL_OP_LOADER_APPLYN)
{
lref_t ac;
fast_read(reader, &ac, false);
if (!FIXNUMP(ac))
vmerror_fast_read("Expected fixnum for loader application argc", reader, ac);
argc = (size_t)FIXNM(ac);
if (argc > FAST_LOAD_STACK_DEPTH) /* Assuming FAST_LOAD_STACK_DEPTH <= ARG_BUF_LEN - 2 */
vmerror_fast_read("Loader application, argc < FAST_LOAD_STACK_DEPTH", reader, ac);
for(size_t ii = 0; ii < argc; ii++)
argv[ii + 1] = fast_loader_stack_pop(reader);
/* Fake a final NIL argument so that we can pass in the argv arguments
* as scalars rather than as a list. */
argc++;
argv[argc] = NIL;
}
else if (opcode != FASL_OP_LOADER_APPLY0)
panic("invalid opcode in fast_read_loader_application");
dscwritef(DF_SHOW_FAST_LOAD_FORMS, (_T("; DEBUG: FASL applying ~s (argc=~cd)\n"), argv[0], argc));
FASL_READER_STREAM(reader)->accum = lapply(argc + 1, argv);
}
static size_t process_vm_int_argument_value(_TCHAR * arg_name, _TCHAR * arg_value)
{
size_t rc = 0;
_TCHAR *endobj = NULL;
rc = strtol(arg_value, &endobj, 10);
switch (*endobj)
{
case 'k':
case 'K':
endobj++;
rc *= 1024;
break;
case 'm':
case 'M':
endobj++;
rc *= (1024 * 1024);
break;
case 'g':
case 'G':
endobj++;
rc *= (1024 * 1024 * 1024);
break;
}
if (*endobj != _T('\0'))
{
dscwritef(DF_ALWAYS, ("Invalid numeric value (\"~cs\") for VM argument \"~cs\".", arg_value,
arg_name));
panic("Aborting Run");
}
return rc;
}
static lref_t execute_fast_op(lref_t fop, lref_t env)
{
lref_t retval = NIL;
lref_t sym;
lref_t binding;
lref_t fn;
lref_t args;
size_t argc;
lref_t argv[ARG_BUF_LEN];
lref_t after;
lref_t tag;
lref_t cell;
lref_t escape_retval;
jmp_buf *jmpbuf;
STACK_CHECK(&fop);
_process_interrupts();
fstack_enter_eval_frame(&fop, fop, env);
while(!NULLP(fop)) {
switch(fop->header.opcode)
{
case FOP_LITERAL:
retval = fop->as.fast_op.arg1;
fop = fop->as.fast_op.next;
break;
case FOP_GLOBAL_REF:
sym = fop->as.fast_op.arg1;
binding = SYMBOL_VCELL(sym);
if (UNBOUND_MARKER_P(binding))
vmerror_unbound(sym);
retval = binding;
fop = fop->as.fast_op.next;
break;
case FOP_GLOBAL_SET:
sym = fop->as.fast_op.arg1;
binding = SYMBOL_VCELL(sym);
if (UNBOUND_MARKER_P(binding))
vmerror_unbound(sym);
SET_SYMBOL_VCELL(sym, retval);
fop = fop->as.fast_op.next;
break;
case FOP_APPLY_GLOBAL:
sym = fop->as.fast_op.arg1;
fn = SYMBOL_VCELL(sym);
if (UNBOUND_MARKER_P(fn))
vmerror_unbound(sym);
argc = 0;
args = fop->as.fast_op.arg2;
while (CONSP(args)) {
if (argc >= ARG_BUF_LEN) {
vmerror_unsupported(_T("too many actual arguments"));
break;
}
argv[argc] = execute_fast_op(CAR(args), env);
args = CDR(args);
argc++;
}
if (!NULLP(args))
vmerror_arg_out_of_range(fop->as.fast_op.arg2,
_T("bad formal argument list"));
fop = apply(fn, argc, argv, &env, &retval);
break;
case FOP_APPLY:
argc = 0;
fn = execute_fast_op(fop->as.fast_op.arg1, env);
args = fop->as.fast_op.arg2;
while (CONSP(args)) {
if (argc >= ARG_BUF_LEN) {
vmerror_unsupported(_T("too many actual arguments"));
break;
}
argv[argc] = execute_fast_op(CAR(args), env);
args = CDR(args);
argc++;
}
if (!NULLP(args))
vmerror_arg_out_of_range(fop->as.fast_op.arg2,
_T("bad formal argument list"));
fop = apply(fn, argc, argv, &env, &retval);
break;
case FOP_IF_TRUE:
if (TRUEP(retval))
fop = fop->as.fast_op.arg1;
else
fop = fop->as.fast_op.arg2;
break;
case FOP_RETVAL:
fop = fop->as.fast_op.next;
break;
case FOP_SEQUENCE:
retval = execute_fast_op(fop->as.fast_op.arg1, env);
fop = fop->as.fast_op.arg2;
break;
case FOP_THROW:
tag = execute_fast_op(fop->as.fast_op.arg1, env);
escape_retval = execute_fast_op(fop->as.fast_op.arg2, env);
dscwritef(DF_SHOW_THROWS, (_T("; DEBUG: throw ~a, retval = ~a\n"), tag, escape_retval));
CURRENT_TIB()->escape_frame = find_matching_escape(CURRENT_TIB()->frame, tag);
CURRENT_TIB()->escape_value = escape_retval;
if (CURRENT_TIB()->escape_frame == NULL) {
/* If we don't find a matching catch for the throw, we have a
* problem and need to invoke a trap. */
vmtrap(TRAP_UNCAUGHT_THROW,
(enum vmt_options_t)(VMT_MANDATORY_TRAP | VMT_HANDLER_MUST_ESCAPE),
2, tag, escape_retval);
}
unwind_stack_for_throw();
fop = fop->as.fast_op.next;
break;
case FOP_CATCH:
tag = execute_fast_op(fop->as.fast_op.arg1, env);
jmpbuf = fstack_enter_catch_frame(tag, CURRENT_TIB()->frame);
dscwritef(DF_SHOW_THROWS, (_T("; DEBUG: setjmp tag: ~a, frame: ~c&, jmpbuf: ~c&\n"), tag, CURRENT_TIB()->frame, jmpbuf));
if (setjmp(*jmpbuf) == 0) {
retval = execute_fast_op(fop->as.fast_op.arg2, env);
} else {
dscwritef(DF_SHOW_THROWS, (_T("; DEBUG: catch, retval = ~a\n"), CURRENT_TIB()->escape_value));
retval = CURRENT_TIB()->escape_value;
CURRENT_TIB()->escape_value = NIL;
}
fstack_leave_frame();
fop = fop->as.fast_op.next;
break;
case FOP_WITH_UNWIND_FN:
fstack_enter_unwind_frame(execute_fast_op(fop->as.fast_op.arg1, env));
retval = execute_fast_op(fop->as.fast_op.arg2, env);
after = CURRENT_TIB()->frame[FOFS_UNWIND_AFTER];
fstack_leave_frame();
apply1(after, 0, NULL);
fop = fop->as.fast_op.next;
break;
case FOP_CLOSURE:
retval = lclosurecons(env,
lcons(lcar(fop->as.fast_op.arg1),
fop->as.fast_op.arg2),
lcdr(fop->as.fast_op.arg1));
fop = fop->as.fast_op.next;
break;
case FOP_CAR:
retval = lcar(retval);
fop = fop->as.fast_op.next;
break;
case FOP_CDR:
retval = lcdr(retval);
fop = fop->as.fast_op.next;
break;
case FOP_NOT:
retval = boolcons(!TRUEP(retval));
fop = fop->as.fast_op.next;
break;
case FOP_NULLP:
retval = boolcons(NULLP(retval));
fop = fop->as.fast_op.next;
break;
case FOP_EQP:
retval = boolcons(EQ(execute_fast_op(fop->as.fast_op.arg1, env),
execute_fast_op(fop->as.fast_op.arg2, env)));
fop = fop->as.fast_op.next;
break;
case FOP_GET_ENV:
retval = env;
fop = fop->as.fast_op.next;
break;
case FOP_GLOBAL_DEF: // three args, third was genv, but currently unused
retval = lidefine_global(fop->as.fast_op.arg1, fop->as.fast_op.arg2);
fop = fop->as.fast_op.next;
break;
case FOP_GET_FSP:
retval = fixcons((fixnum_t)CURRENT_TIB()->fsp);
fop = fop->as.fast_op.next;
break;
case FOP_GET_FRAME:
retval = fixcons((fixnum_t)CURRENT_TIB()->frame);
fop = fop->as.fast_op.next;
break;
case FOP_GET_HFRAMES:
retval = CURRENT_TIB()->handler_frames;
fop = fop->as.fast_op.next;
break;
case FOP_SET_HFRAMES:
CURRENT_TIB()->handler_frames = execute_fast_op(fop->as.fast_op.arg1, env);
fop = fop->as.fast_op.next;
break;
case FOP_GLOBAL_PRESERVE_FRAME:
sym = fop->as.fast_op.arg1;
binding = SYMBOL_VCELL(sym);
if (UNBOUND_MARKER_P(binding))
vmerror_unbound(sym);
SET_SYMBOL_VCELL(sym, fixcons((fixnum_t)CURRENT_TIB()->frame));
retval = execute_fast_op(fop->as.fast_op.arg2, env);
fop = fop->as.fast_op.next;
break;
case FOP_STACK_BOUNDARY:
sym = execute_fast_op(fop->as.fast_op.arg1, env);
fstack_enter_boundary_frame(sym);
retval = execute_fast_op(fop->as.fast_op.arg2, env);
fstack_leave_frame();
fop = fop->as.fast_op.next;
break;
case FOP_FAST_ENQUEUE_CELL:
retval = execute_fast_op(fop->as.fast_op.arg2, env);
cell = execute_fast_op(fop->as.fast_op.arg1, env);
SET_CDR(CAR(retval), cell);
SET_CAR(retval, cell);
fop = fop->as.fast_op.next;
break;
case FOP_WHILE_TRUE:
while(TRUEP(execute_fast_op(fop->as.fast_op.arg1, env))) {
retval = execute_fast_op(fop->as.fast_op.arg2, env);
}
fop = fop->as.fast_op.next;
break;
case FOP_LOCAL_REF_BY_INDEX:
retval = lenvlookup_by_index(FIXNM(fop->as.fast_op.arg1),
FIXNM(fop->as.fast_op.arg2),
env);
fop = fop->as.fast_op.next;
break;
case FOP_LOCAL_REF_RESTARG:
retval = lenvlookup_restarg_by_index(FIXNM(fop->as.fast_op.arg1),
FIXNM(fop->as.fast_op.arg2),
env);
fop = fop->as.fast_op.next;
break;
case FOP_LOCAL_SET_BY_INDEX:
lenvlookup_set_by_index(FIXNM(fop->as.fast_op.arg1),
FIXNM(fop->as.fast_op.arg2),
env,
retval);
fop = fop->as.fast_op.next;
break;
default:
panic("Unsupported fast-op");
}
}
fstack_leave_frame();
return retval;
}
void init0(int argc, _TCHAR * argv[], enum debug_flag_t initial_debug_flags)
{
global_environment_asserts();
previous_panic_handler = set_panic_handler(scan_panic_handler);
/** Initialize the interpreter globals */
memset(&interp, 0, sizeof(interp));
/* We need the debug flags pretty early on, so that we know how
* to set up debugger I/O. */
interp.debug_flags = debug_flags_from_environment(initial_debug_flags);
init_debugger_output();
interp.init_load_file_count = 0;
interp.intr_pending = VMINTR_NONE;
interp.intr_masked = false;
interp.launch_realtime = sys_runtime();
interp.fasl_package_list = NIL;
gc_protect(_T("fasl-package-list"), &interp.fasl_package_list, 1);
/* Statistics Counters */
interp.gc_heap_segment_size = DEFAULT_HEAP_SEGMENT_SIZE;
interp.gc_max_heap_segments = DEFAULT_MAX_HEAP_SEGMENTS;
interp.gc_current_heap_segments = 0;
interp.gc_heap_segments = NULL;
interp.gc_total_cells_allocated = 0;
interp.gc_malloc_bytes_threshold = (sizeof(struct lobject_t) * interp.gc_heap_segment_size);
interp.gc_total_run_time = 0.0;
interp.gc_start_time = 0.0;
interp.thread.fsp = &(interp.thread.frame_stack[FRAME_STACK_SIZE]);
interp.thread.frame = NULL;
process_vm_arguments(argc, argv);
if (interp.debug_flags != DF_NONE)
dscwritef(DF_ALWAYS, ("; DEBUG: debug_flags=0x~cx\n", interp.debug_flags));
/*** Create the gc heap and populate it with the standard objects */
gc_initialize_heap();
create_initial_packages();
init_base_scheme_objects();
init_stdio_ports();
register_main_subrs();
gc_protect(_T("handler-frames"), &(CURRENT_TIB()->handler_frames), 1);
gc_protect(_T("frame-stack"), (struct lobject_t **)&(CURRENT_TIB()->frame_stack[0]), sizeof(CURRENT_TIB()->frame_stack) / sizeof(lref_t));
accept_command_line_arguments(argc, argv);
load_init_load_files();
}
static void fast_read(lref_t reader, lref_t * retval, bool allow_loader_ops /* = false */ )
{
lref_t *fasl_table_entry = NULL;
*retval = NIL;
if (!FASL_READER_P(reader))
vmerror_wrong_type_n(1, reader);
assert(NULLP(FASL_READER_STREAM(reader)->table) || VECTORP(FASL_READER_STREAM(reader)->table));
/* The core of this function is wrapped in a giant while loop to remove
* tail recursive calls. Some opcodes don't directly return anything:
* they just tail recursively read the next opcode after performing their
* action via side effect. */
bool current_read_complete = false;
while (!current_read_complete)
{
/* Assume we're going to complete the read unless we find out otherwise.. */
current_read_complete = true;
size_t opcode_location = PORT_BYTES_READ(FASL_READER_PORT(reader));
enum fasl_opcode_t opcode = fast_read_opcode(reader);
fixnum_t index = 0;
lref_t name;
if (DEBUG_FLAG(DF_FASL_SHOW_OPCODES))
{
const _TCHAR *opcode_name = fasl_opcode_name(opcode);
dscwritef(DF_FASL_SHOW_OPCODES,
(_T("; DEBUG: fasl-opcode@~cx :~cS\n"),
opcode_location, opcode_name ? opcode_name : _T("<INVALID>")));
}
switch (opcode)
{
case FASL_OP_NIL:
*retval = NIL;
break;
case FASL_OP_TRUE:
*retval = boolcons(true);
break;
case FASL_OP_FALSE:
*retval = boolcons(false);
break;
case FASL_OP_CHARACTER:
fast_read_character(reader, retval);
break;
case FASL_OP_LIST:
fast_read_list(reader, false, retval);
break;
case FASL_OP_LISTD:
fast_read_list(reader, true, retval);
break;
case FASL_OP_FIX8:
fast_read_fixnum_int8(reader, retval);
break;
case FASL_OP_FIX16:
fast_read_fixnum_int16(reader, retval);
break;
case FASL_OP_FIX32:
fast_read_fixnum_int32(reader, retval);
break;
case FASL_OP_FIX64:
fast_read_fixnum_int64(reader, retval);
break;
case FASL_OP_FLOAT:
fast_read_flonum(reader, false, retval);
break;
case FASL_OP_COMPLEX:
fast_read_flonum(reader, true, retval);
break;
case FASL_OP_STRING:
fast_read_string(reader, retval);
break;
case FASL_OP_PACKAGE:
fast_read_package(reader, retval);
break;
case FASL_OP_VECTOR:
fast_read_vector(reader, retval);
break;
case FASL_OP_HASH:
fast_read_hash(reader, retval);
break;
case FASL_OP_CLOSURE:
fast_read_closure(reader, retval);
break;
case FASL_OP_MACRO:
fast_read_macro(reader, retval);
break;
case FASL_OP_SYMBOL:
fast_read_symbol(reader, retval);
break;
case FASL_OP_SUBR:
fast_read_subr(reader, retval);
break;
case FASL_OP_STRUCTURE:
fast_read_structure(reader, retval);
break;
case FASL_OP_STRUCTURE_LAYOUT:
fast_read_structure_layout(reader, retval);
break;
case FASL_OP_FAST_OP_0:
fast_read_fast_op(0, false, reader, retval);
break;
case FASL_OP_FAST_OP_1:
fast_read_fast_op(1, false, reader, retval);
break;
case FASL_OP_FAST_OP_2:
fast_read_fast_op(2, false, reader, retval);
break;
case FASL_OP_FAST_OP_0N:
fast_read_fast_op(0, true, reader, retval);
break;
case FASL_OP_FAST_OP_1N:
fast_read_fast_op(1, true, reader, retval);
break;
case FASL_OP_FAST_OP_2N:
fast_read_fast_op(2, true, reader, retval);
break;
case FASL_OP_NOP_1:
case FASL_OP_NOP_2:
case FASL_OP_NOP_3:
current_read_complete = false;
break;
case FASL_OP_COMMENT_1:
case FASL_OP_COMMENT_2:
fast_read_to_newline(reader);
current_read_complete = false;
break;
case FASL_OP_RESET_READER_DEFS:
FASL_READER_STREAM(reader)->table = NIL;
current_read_complete = false;
break;
case FASL_OP_READER_DEFINITION:
index = fast_read_table_index(reader);
fasl_table_entry = &(FASL_READER_STREAM(reader)->table->as.vector.data[index]);
fast_read(reader, fasl_table_entry, allow_loader_ops);
/* This should throw if the FASL table was resized
* during the call to read. */
assert(fasl_table_entry == &(FASL_READER_STREAM(reader)->table->as.vector.data[index]));
*retval = *fasl_table_entry;
break;
case FASL_OP_READER_REFERENCE:
index = fast_read_table_index(reader);
*retval = FASL_READER_STREAM(reader)->table->as.vector.data[index];
break;
case FASL_OP_EOF:
*retval = lmake_eof();
break;
case FASL_OP_LOADER_DEFINEQ:
case FASL_OP_LOADER_DEFINEA0:
if (!allow_loader_ops)
vmerror_fast_read(_T("loader definitions not allowed outside loader"), reader, NIL);
fast_read_loader_definition(reader, opcode);
current_read_complete = false;
break;
case FASL_OP_LOADER_APPLY0:
case FASL_OP_LOADER_APPLYN:
if (!allow_loader_ops)
vmerror_fast_read(_T("loader function applications not allowed outside loader"), reader, NIL);
fast_read_loader_application(reader, opcode);
break;
case FASL_OP_BEGIN_LOAD_UNIT:
if (!allow_loader_ops)
vmerror_fast_read(_T("load units are not allowed outside loader"), reader, NIL);
fast_read(reader, &name, allow_loader_ops);
dscwritef(DF_SHOW_FAST_LOAD_UNITS, ("; DEBUG: FASL entering unit ~s\n", name));
break;
case FASL_OP_END_LOAD_UNIT:
if (!allow_loader_ops)
vmerror_fast_read(_T("load units are not allowed outside loader"), reader, NIL);
fast_read(reader, &name, allow_loader_ops);
dscwritef(DF_SHOW_FAST_LOAD_UNITS, ("; DEBUG: FASL leaving unit ~s\n", name));
break;
case FASL_OP_LOADER_PUSH:
fast_loader_stack_push(reader, FASL_READER_STREAM(reader)->accum);
break;
case FASL_OP_LOADER_DROP:
fast_loader_stack_pop(reader);
break;
default:
vmerror_fast_read("invalid opcode", reader, fixcons(opcode));
}
}
}
