/* vm.c -- stack-based virtual machine backend */
/* Copyright (c) 2009-2010 Alex Shinn. All rights reserved. */
/* BSD-style license: http://synthcode.com/license.txt */
#if SEXP_USE_DEBUG_VM > 1
static void sexp_print_stack (sexp ctx, sexp *stack, int top, int fp, sexp out) {
int i;
if (! sexp_oportp(out)) out = sexp_current_error_port(ctx);
for (i=0; i<top; i++) {
sexp_write_char(ctx, ((i==fp) ? '*' : ' '), out);
if (i < 10) sexp_write_char(ctx, '0', out);
sexp_write(ctx, sexp_make_fixnum(i), out);
sexp_write_string(ctx, ": ", out);
sexp_write(ctx, stack[i], out);
sexp_newline(ctx, out);
}
}
#else
#define sexp_print_stack(ctx, stacl, top, fp, out)
#endif
void sexp_stack_trace (sexp ctx, sexp out) {
int i, fp=sexp_context_last_fp(ctx);
sexp self, bc, ls, *stack=sexp_stack_data(sexp_context_stack(ctx));
if (! sexp_oportp(out)) out = sexp_current_error_port(ctx);
for (i=fp; i>4; i=sexp_unbox_fixnum(stack[i+3])) {
self = stack[i+2];
if (sexp_procedurep(self)) {
sexp_write_string(ctx, " called from ", out);
bc = sexp_procedure_code(self);
if (sexp_truep(sexp_bytecode_name(bc)))
sexp_write(ctx, sexp_bytecode_name(bc), out);
else
sexp_write_string(ctx, "<anonymous>", out);
if ((ls=sexp_bytecode_source(bc)) && sexp_pairp(ls)) {
if (sexp_fixnump(sexp_cdr(ls)) && (sexp_cdr(ls) >= SEXP_ZERO)) {
sexp_write_string(ctx, " on line ", out);
sexp_write(ctx, sexp_cdr(ls), out);
}
if (sexp_stringp(sexp_car(ls))) {
sexp_write_string(ctx, " of file ", out);
sexp_write_string(ctx, sexp_string_data(sexp_car(ls)), out);
}
}
sexp_write_char(ctx, '\n', out);
}
}
}
/************************* code generation ****************************/
static void bytecode_preserve (sexp ctx, sexp obj) {
sexp ls = sexp_bytecode_literals(sexp_context_bc(ctx));
if (sexp_pointerp(obj) && !sexp_symbolp(obj)
&& sexp_not(sexp_memq(ctx, obj, ls)))
sexp_push(ctx, sexp_bytecode_literals(sexp_context_bc(ctx)), obj);
}
static void emit_word (sexp ctx, sexp_uint_t val) {
unsigned char *data;
expand_bcode(ctx, sizeof(sexp));
data = sexp_bytecode_data(sexp_context_bc(ctx));
sexp_context_align_pos(ctx);
*((sexp_uint_t*)(&(data[sexp_context_pos(ctx)]))) = val;
sexp_context_pos(ctx) += sizeof(sexp);
}
static void emit_push (sexp ctx, sexp obj) {
emit(ctx, SEXP_OP_PUSH);
emit_word(ctx, (sexp_uint_t)obj);
bytecode_preserve(ctx, obj);
}
static void emit_enter (sexp ctx) {return;}
static void bless_bytecode (sexp ctx, sexp bc) {return;}
static void emit_return (sexp ctx) {
emit(ctx, SEXP_OP_RET);
}
static sexp_sint_t sexp_context_make_label (sexp ctx) {
sexp_sint_t label;
sexp_context_align_pos(ctx);
label = sexp_context_pos(ctx);
sexp_context_pos(ctx) += sizeof(sexp_uint_t);
return label;
}
static void sexp_context_patch_label (sexp ctx, sexp_sint_t label) {
sexp bc = sexp_context_bc(ctx);
unsigned char *data = sexp_bytecode_data(bc)+label;
*((sexp_sint_t*)data) = sexp_context_pos(ctx)-label;
}
static void generate_lit (sexp ctx, sexp value) {
emit_push(ctx, value);
}
static void generate_seq (sexp ctx, sexp app) {
sexp head=app, tail=sexp_cdr(app);
sexp_uint_t tailp = sexp_context_tailp(ctx);
sexp_context_tailp(ctx) = 0;
for ( ; sexp_pairp(tail); head=tail, tail=sexp_cdr(tail))
if (sexp_pointerp(sexp_car(head)) && (! sexp_litp(sexp_car(head)))) {
generate(ctx, sexp_car(head));
emit(ctx, SEXP_OP_DROP);
sexp_context_depth(ctx)--;
}
sexp_context_tailp(ctx) = tailp;
generate(ctx, sexp_car(head));
}
static void generate_cnd (sexp ctx, sexp cnd) {
sexp_sint_t label1, label2, tailp=sexp_context_tailp(ctx);
sexp_context_tailp(ctx) = 0;
generate(ctx, sexp_cnd_test(cnd));
sexp_context_tailp(ctx) = tailp;
emit(ctx, SEXP_OP_JUMP_UNLESS);
sexp_context_depth(ctx)--;
label1 = sexp_context_make_label(ctx);
generate(ctx, sexp_cnd_pass(cnd));
sexp_context_tailp(ctx) = tailp;
emit(ctx, SEXP_OP_JUMP);
sexp_context_depth(ctx)--;
label2 = sexp_context_make_label(ctx);
sexp_context_patch_label(ctx, label1);
generate(ctx, sexp_cnd_fail(cnd));
sexp_context_patch_label(ctx, label2);
}
static void generate_non_global_ref (sexp ctx, sexp name, sexp cell,
sexp lambda, sexp fv, int unboxp) {
sexp_uint_t i;
sexp loc = sexp_cdr(cell);
if (loc == lambda && sexp_lambdap(lambda)) {
/* local ref */
emit(ctx, SEXP_OP_LOCAL_REF);
emit_word(ctx, sexp_param_index(lambda, name));
} else {
/* closure ref */
for (i=0; sexp_pairp(fv); fv=sexp_cdr(fv), i++)
if ((name == sexp_ref_name(sexp_car(fv)))
&& (loc == sexp_ref_loc(sexp_car(fv))))
break;
emit(ctx, SEXP_OP_CLOSURE_REF);
emit_word(ctx, i);
}
if (unboxp && (sexp_memq(ctx, name, sexp_lambda_sv(loc)) != SEXP_FALSE))
emit(ctx, SEXP_OP_CDR);
sexp_context_depth(ctx)++;
}
static void generate_ref (sexp ctx, sexp ref, int unboxp) {
sexp lam;
if (! sexp_lambdap(sexp_ref_loc(ref))) {
/* global ref */
if (unboxp) {
emit(ctx, (sexp_cdr(sexp_ref_cell(ref)) == SEXP_UNDEF)
? SEXP_OP_GLOBAL_REF : SEXP_OP_GLOBAL_KNOWN_REF);
emit_word(ctx, (sexp_uint_t)sexp_ref_cell(ref));
bytecode_preserve(ctx, sexp_ref_cell(ref));
} else
emit_push(ctx, sexp_ref_cell(ref));
} else {
lam = sexp_context_lambda(ctx);
generate_non_global_ref(ctx, sexp_ref_name(ref), sexp_ref_cell(ref),
lam, sexp_lambda_fv(lam), unboxp);
}
}
static void generate_set (sexp ctx, sexp set) {
sexp ref = sexp_set_var(set), lambda;
/* compile the value */
sexp_context_tailp(ctx) = 0;
if (sexp_lambdap(sexp_set_value(set)))
sexp_lambda_name(sexp_set_value(set)) = sexp_ref_name(ref);
generate(ctx, sexp_set_value(set));
if (! sexp_lambdap(sexp_ref_loc(ref))) {
/* global vars are set directly */
emit_push(ctx, sexp_ref_cell(ref));
emit(ctx, SEXP_OP_SET_CDR);
} else {
lambda = sexp_ref_loc(ref);
if (sexp_truep(sexp_memq(ctx, sexp_ref_name(ref), sexp_lambda_sv(lambda)))) {
/* stack or closure mutable vars are boxed */
generate_ref(ctx, ref, 0);
emit(ctx, SEXP_OP_SET_CDR);
} else {
/* internally defined variable */
emit(ctx, SEXP_OP_LOCAL_SET);
emit_word(ctx, sexp_param_index(lambda, sexp_ref_name(ref)));
}
}
sexp_context_depth(ctx)--;
}
static void generate_opcode_app (sexp ctx, sexp app) {
sexp op = sexp_car(app);
sexp_sint_t i, num_args, inv_default=0;
sexp_gc_var1(ls);
sexp_gc_preserve1(ctx, ls);
num_args = sexp_unbox_fixnum(sexp_length(ctx, sexp_cdr(app)));
sexp_context_tailp(ctx) = 0;
if (sexp_opcode_class(op) != SEXP_OPC_PARAMETER) {
/* maybe push the default for an optional argument */
if ((num_args == sexp_opcode_num_args(op))
&& sexp_opcode_variadic_p(op) && sexp_opcode_data(op)) {
if (sexp_opcode_inverse(op)) {
inv_default = 1;
} else {
if (sexp_opcode_opt_param_p(op)) {
#if SEXP_USE_GREEN_THREADS
emit(ctx, SEXP_OP_PARAMETER_REF);
emit_word(ctx, (sexp_uint_t)sexp_opcode_data(op));
bytecode_preserve(ctx, sexp_opcode_data(op));
#else
emit_push(ctx, sexp_opcode_data(op));
#endif
emit(ctx, SEXP_OP_CDR);
} else {
emit_push(ctx, sexp_opcode_data(op));
}
sexp_context_depth(ctx)++;
num_args++;
}
}
/* push the arguments onto the stack in reverse order */
ls = ((sexp_opcode_inverse(op)
&& (sexp_opcode_class(op) != SEXP_OPC_ARITHMETIC))
? sexp_cdr(app) : sexp_reverse(ctx, sexp_cdr(app)));
for ( ; sexp_pairp(ls); ls = sexp_cdr(ls))
generate(ctx, sexp_car(ls));
}
/* push the default for inverse opcodes */
if (inv_default) {
emit_push(ctx, sexp_opcode_data(op));
if (sexp_opcode_opt_param_p(op)) emit(ctx, SEXP_OP_CDR);
sexp_context_depth(ctx)++;
num_args++;
}
/* emit the actual operator call */
switch (sexp_opcode_class(op)) {
case SEXP_OPC_ARITHMETIC:
/* fold variadic arithmetic operators */
for (i=num_args-1; i>0; i--)
emit(ctx, sexp_opcode_code(op));
break;
case SEXP_OPC_ARITHMETIC_CMP:
if (num_args > 2) {
emit(ctx, SEXP_OP_STACK_REF);
emit_word(ctx, 2);
emit(ctx, SEXP_OP_STACK_REF);
emit_word(ctx, 2);
emit(ctx, sexp_opcode_code(op));
emit(ctx, SEXP_OP_AND);
for (i=num_args-2; i>0; i--) {
emit(ctx, SEXP_OP_STACK_REF);
emit_word(ctx, 3);
emit(ctx, SEXP_OP_STACK_REF);
emit_word(ctx, 3);
emit(ctx, sexp_opcode_code(op));
emit(ctx, SEXP_OP_AND);
emit(ctx, SEXP_OP_AND);
}
} else
emit(ctx, sexp_opcode_code(op));
break;
case SEXP_OPC_FOREIGN:
emit(ctx, sexp_opcode_code(op));
emit_word(ctx, (sexp_uint_t)op);
bytecode_preserve(ctx, op);
break;
case SEXP_OPC_TYPE_PREDICATE:
case SEXP_OPC_GETTER:
case SEXP_OPC_SETTER:
case SEXP_OPC_CONSTRUCTOR:
emit(ctx, sexp_opcode_code(op));
if ((sexp_opcode_class(op) != SEXP_OPC_CONSTRUCTOR)
|| sexp_opcode_code(op) == SEXP_OP_MAKE) {
if (sexp_opcode_data(op))
emit_word(ctx, sexp_unbox_fixnum(sexp_opcode_data(op)));
if (sexp_opcode_data2(op))
emit_word(ctx, sexp_unbox_fixnum(sexp_opcode_data2(op)));
if (sexp_opcode_data(op) || sexp_opcode_data2(op))
bytecode_preserve(ctx, op);
}
break;
case SEXP_OPC_PARAMETER:
#if SEXP_USE_GREEN_THREADS
if (num_args > 0) {
if (sexp_opcode_data2(op) && sexp_applicablep(sexp_opcode_data2(op))) {
ls = sexp_list2(ctx, sexp_opcode_data2(op), sexp_cadr(app));
generate(ctx, ls);
} else {
generate(ctx, sexp_cadr(app));
}
}
emit(ctx, SEXP_OP_PARAMETER_REF);
emit_word(ctx, (sexp_uint_t)op);
bytecode_preserve(ctx, op);
#else
if (num_args > 0) generate(ctx, sexp_cadr(app));
emit_push(ctx, sexp_opcode_data(op));
#endif
emit(ctx, ((num_args == 0) ? SEXP_OP_CDR : SEXP_OP_SET_CDR));
break;
default:
emit(ctx, sexp_opcode_code(op));
}
sexp_context_depth(ctx) -= (num_args-1);
sexp_gc_release1(ctx);
}
static void generate_general_app (sexp ctx, sexp app) {
sexp_uint_t len = sexp_unbox_fixnum(sexp_length(ctx, sexp_cdr(app))),
tailp = sexp_context_tailp(ctx);
sexp_gc_var1(ls);
sexp_gc_preserve1(ctx, ls);
/* push the arguments onto the stack */
sexp_context_tailp(ctx) = 0;
for (ls=sexp_reverse(ctx, sexp_cdr(app)); sexp_pairp(ls); ls=sexp_cdr(ls))
generate(ctx, sexp_car(ls));
/* push the operator onto the stack */
generate(ctx, sexp_car(app));
/* maybe overwrite the current frame */
emit(ctx, (tailp ? SEXP_OP_TAIL_CALL : SEXP_OP_CALL));
emit_word(ctx, (sexp_uint_t)sexp_make_fixnum(len));
sexp_context_tailp(ctx) = tailp;
sexp_context_depth(ctx) -= len;
sexp_gc_release1(ctx);
}
static void generate_app (sexp ctx, sexp app) {
if (sexp_opcodep(sexp_car(app)))
generate_opcode_app(ctx, app);
else
generate_general_app(ctx, app);
}
static void generate_lambda (sexp ctx, sexp lambda) {
sexp ctx2, fv, ls, flags, len, ref, prev_lambda, prev_fv;
sexp_uint_t k;
sexp_gc_var2(tmp, bc);
sexp_gc_preserve2(ctx, tmp, bc);
prev_lambda = sexp_context_lambda(ctx);
prev_fv = sexp_lambdap(prev_lambda) ? sexp_lambda_fv(prev_lambda) : SEXP_NULL;
fv = sexp_lambda_fv(lambda);
ctx2 = sexp_make_eval_context(ctx, sexp_context_stack(ctx), sexp_context_env(ctx), 0);
sexp_context_lambda(ctx2) = lambda;
/* allocate space for local vars */
for (ls=sexp_lambda_locals(lambda); sexp_pairp(ls); ls=sexp_cdr(ls))
emit_push(ctx2, SEXP_VOID);
/* box mutable vars */
for (ls=sexp_lambda_sv(lambda); sexp_pairp(ls); ls=sexp_cdr(ls)) {
k = sexp_param_index(lambda, sexp_car(ls));
if (k >= 0) {
emit(ctx2, SEXP_OP_LOCAL_REF);
emit_word(ctx2, k);
emit_push(ctx2, sexp_car(ls));
emit(ctx2, SEXP_OP_CONS);
emit(ctx2, SEXP_OP_LOCAL_SET);
emit_word(ctx2, k);
emit(ctx2, SEXP_OP_DROP);
}
}
sexp_context_tailp(ctx2) = 1;
generate(ctx2, sexp_lambda_body(lambda));
flags = sexp_make_fixnum((sexp_listp(ctx2, sexp_lambda_params(lambda))
== SEXP_FALSE) ? 1uL : 0uL);
len = sexp_length(ctx2, sexp_lambda_params(lambda));
bc = finalize_bytecode(ctx2);
sexp_bytecode_name(bc) = sexp_lambda_name(lambda);
sexp_bytecode_source(bc) = sexp_lambda_source(lambda);
if (sexp_nullp(fv)) {
/* shortcut, no free vars */
tmp = sexp_make_vector(ctx2, SEXP_ZERO, SEXP_VOID);
tmp = sexp_make_procedure(ctx2, flags, len, bc, tmp);
bytecode_preserve(ctx, tmp);
generate_lit(ctx, tmp);
} else {
/* push the closed vars */
emit_push(ctx, SEXP_VOID);
emit_push(ctx, sexp_length(ctx, fv));
emit(ctx, SEXP_OP_MAKE_VECTOR);
sexp_context_depth(ctx)--;
for (k=0; sexp_pairp(fv); fv=sexp_cdr(fv), k++) {
ref = sexp_car(fv);
generate_non_global_ref(ctx, sexp_ref_name(ref), sexp_ref_cell(ref),
prev_lambda, prev_fv, 0);
emit_push(ctx, sexp_make_fixnum(k));
emit(ctx, SEXP_OP_STACK_REF);
emit_word(ctx, 3);
emit(ctx, SEXP_OP_VECTOR_SET);
emit(ctx, SEXP_OP_DROP);
sexp_context_depth(ctx)--;
}
/* push the additional procedure info and make the closure */
emit_push(ctx, bc);
emit_push(ctx, len);
emit_push(ctx, flags);
emit(ctx, SEXP_OP_MAKE_PROCEDURE);
}
sexp_gc_release2(ctx);
}
static void generate (sexp ctx, sexp x) {
if (sexp_pointerp(x)) {
switch (sexp_pointer_tag(x)) {
case SEXP_PAIR: generate_app(ctx, x); break;
case SEXP_LAMBDA: generate_lambda(ctx, x); break;
case SEXP_CND: generate_cnd(ctx, x); break;
case SEXP_REF: generate_ref(ctx, x, 1); break;
case SEXP_SET: generate_set(ctx, x); break;
case SEXP_SEQ: generate_seq(ctx, sexp_seq_ls(x)); break;
case SEXP_LIT: generate_lit(ctx, sexp_lit_value(x)); break;
default: generate_lit(ctx, x);
}
} else {
generate_lit(ctx, x);
}
}
static sexp make_param_list (sexp ctx, sexp_uint_t i) {
sexp_gc_var1(res);
sexp_gc_preserve1(ctx, res);
res = SEXP_NULL;
for ( ; i>0; i--)
res = sexp_cons(ctx, sexp_make_fixnum(i), res);
sexp_gc_release1(ctx);
return res;
}
static sexp make_opcode_procedure (sexp ctx, sexp op, sexp_uint_t i) {
sexp ls, res, env;
sexp_gc_var6(bc, params, ref, refs, lambda, ctx2);
if (i == sexp_opcode_num_args(op)) { /* return before preserving */
if (sexp_opcode_proc(op)) return sexp_opcode_proc(op);
} else if (i < sexp_opcode_num_args(op)) {
return sexp_compile_error(ctx, "not enough args for opcode", op);
} else if (! sexp_opcode_variadic_p(op)) { /* i > num_args */
return sexp_compile_error(ctx, "too many args for opcode", op);
}
sexp_gc_preserve6(ctx, bc, params, ref, refs, lambda, ctx2);
params = make_param_list(ctx, i);
lambda = sexp_make_lambda(ctx, params);
ctx2 = sexp_make_child_context(ctx, lambda);
env = sexp_extend_env(ctx2, sexp_context_env(ctx), params, lambda);
sexp_context_env(ctx2) = env;
for (ls=params, refs=SEXP_NULL; sexp_pairp(ls); ls=sexp_cdr(ls)) {
ref = sexp_make_ref(ctx2, sexp_car(ls), sexp_env_cell(env, sexp_car(ls)));
sexp_push(ctx2, refs, ref);
}
refs = sexp_reverse(ctx2, refs);
refs = sexp_cons(ctx2, op, refs);
generate_opcode_app(ctx2, refs);
bc = finalize_bytecode(ctx2);
sexp_bytecode_name(bc) = sexp_c_string(ctx2, sexp_opcode_name(op), -1);
res=sexp_make_procedure(ctx2, SEXP_ZERO, sexp_make_fixnum(i), bc, SEXP_VOID);
if (i == sexp_opcode_num_args(op))
sexp_opcode_proc(op) = res;
sexp_gc_release6(ctx);
return res;
}
/*********************** the virtual machine **************************/
static sexp sexp_save_stack (sexp ctx, sexp *stack, sexp_uint_t to) {
sexp res, *data;
sexp_uint_t i;
res = sexp_make_vector(ctx, sexp_make_fixnum(to), SEXP_VOID);
data = sexp_vector_data(res);
for (i=0; i<to; i++)
data[i] = stack[i];
return res;
}
static sexp_uint_t sexp_restore_stack (sexp saved, sexp *current) {
sexp_uint_t len = sexp_vector_length(saved), i;
sexp *from = sexp_vector_data(saved);
for (i=0; i<len; i++)
current[i] = from[i];
return len;
}
#define _ARG1 stack[top-1]
#define _ARG2 stack[top-2]
#define _ARG3 stack[top-3]
#define _ARG4 stack[top-4]
#define _ARG5 stack[top-5]
#define _ARG6 stack[top-6]
#define _PUSH(x) (stack[top++]=(x))
#if SEXP_USE_ALIGNED_BYTECODE
#define _ALIGN_IP() ip = (unsigned char *)sexp_word_align((sexp_uint_t)ip)
#else
#define _ALIGN_IP()
#endif
#define _WORD0 ((sexp*)ip)[0]
#define _UWORD0 ((sexp_uint_t*)ip)[0]
#define _SWORD0 ((sexp_sint_t*)ip)[0]
#define _WORD1 ((sexp*)ip)[1]
#define _UWORD1 ((sexp_uint_t*)ip)[1]
#define _SWORD1 ((sexp_sint_t*)ip)[1]
#define sexp_raise(msg, args) \
do {sexp_context_top(ctx) = top+1; \
stack[top] = args; \
stack[top] = sexp_user_exception(ctx, self, msg, stack[top]); \
top++; \
goto call_error_handler;} \
while (0)
#define sexp_check_exception() \
do {if (sexp_exceptionp(_ARG1)) { \
goto call_error_handler;}} \
while (0)
static int sexp_check_type(sexp ctx, sexp a, sexp b) {
int d;
sexp t, v;
if (! sexp_pointerp(a))
return 0;
if (sexp_isa(a, b))
return 1;
t = sexp_object_type(ctx, a);
v = sexp_type_cpl(t);
d = sexp_type_depth(b);
return sexp_vectorp(v)
&& (d < sexp_vector_length(v))
&& sexp_vector_ref(v, sexp_make_fixnum(d)) == b;
}
#if SEXP_USE_GREEN_THREADS
#define sexp_fcall_return(x, i) \
if (sexp_exceptionp(x)) { \
if (x == sexp_global(ctx, SEXP_G_IO_BLOCK_ERROR)) { \
fuel = 0; ip--; goto loop; \
} else { \
top -= i; \
_ARG1 = x; \
ip += sizeof(sexp); \
goto call_error_handler; \
} \
} else { \
top -= i; \
_ARG1 = x; \
ip += sizeof(sexp); \
}
#else
#define sexp_fcall_return(x, i) \
top -= i; _ARG1 = x; ip += s; sexp_check_exception(x);
#endif
#if SEXP_USE_DEBUG_VM
#include "opt/opcode_names.h"
#endif
#if SEXP_USE_EXTENDED_FCALL
#include "opt/fcall.c"
#endif
sexp sexp_vm (sexp ctx, sexp proc) {
sexp bc = sexp_procedure_code(proc), cp = sexp_procedure_vars(proc);
sexp *stack = sexp_stack_data(sexp_context_stack(ctx));
unsigned char *ip = sexp_bytecode_data(bc);
sexp_sint_t i, j, k, fp, top = sexp_stack_top(sexp_context_stack(ctx));
#if SEXP_USE_GREEN_THREADS
sexp root_thread = ctx;
sexp_sint_t fuel = sexp_context_refuel(ctx);
#endif
#if SEXP_USE_BIGNUMS
sexp_lsint_t prod;
#endif
sexp_gc_var3(self, tmp1, tmp2);
sexp_gc_preserve3(ctx, self, tmp1, tmp2);
fp = top - 4;
self = proc;
loop:
#if SEXP_USE_GREEN_THREADS
if (--fuel <= 0) {
tmp1 = sexp_global(ctx, SEXP_G_THREADS_SCHEDULER);
if (sexp_applicablep(tmp1)) {
/* save thread */
sexp_context_top(ctx) = top;
sexp_context_ip(ctx) = ip;
sexp_context_last_fp(ctx) = fp;
sexp_context_proc(ctx) = self;
/* run scheduler */
ctx = sexp_apply1(ctx, tmp1, root_thread);
/* restore thread */
stack = sexp_stack_data(sexp_context_stack(ctx));
top = sexp_context_top(ctx);
fp = sexp_context_last_fp(ctx);
ip = sexp_context_ip(ctx);
self = sexp_context_proc(ctx);
bc = sexp_procedure_code(self);
cp = sexp_procedure_vars(self);
}
fuel = sexp_context_refuel(ctx);
if (fuel <= 0) goto end_loop;
}
#endif
#if SEXP_USE_DEBUG_VM
if (sexp_context_tracep(ctx)) {
sexp_print_stack(ctx, stack, top, fp, SEXP_FALSE);
fprintf(stderr, "%s %s ip: %p stack: %p top: %ld fp: %ld (%ld)\n",
(*ip<=SEXP_OP_NUM_OPCODES) ? reverse_opcode_names[*ip] : "UNKNOWN",
(SEXP_OP_FCALL0 <= *ip && *ip <= SEXP_OP_FCALL4
? sexp_opcode_name(((sexp*)(ip+1))[0]) : ""),
ip, stack, top, fp, (fp<1024 ? sexp_unbox_fixnum(stack[fp+3]) : -1));
}
#endif
switch (*ip++) {
case SEXP_OP_NOOP:
break;
call_error_handler:
if (! sexp_exception_procedure(_ARG1))
sexp_exception_procedure(_ARG1) = self;
case SEXP_OP_RAISE:
tmp1 = sexp_parameter_ref(ctx, sexp_global(ctx, SEXP_G_ERR_HANDLER));
sexp_context_last_fp(ctx) = fp;
if (! sexp_procedurep(tmp1))
goto end_loop;
stack[top] = SEXP_ONE;
stack[top+1] = sexp_make_fixnum(ip-sexp_bytecode_data(bc));
stack[top+2] = self;
stack[top+3] = sexp_make_fixnum(fp);
top += 4;
self = tmp1;
bc = sexp_procedure_code(self);
ip = sexp_bytecode_data(bc);
cp = sexp_procedure_vars(self);
fp = top-4;
break;
case SEXP_OP_RESUMECC:
tmp1 = stack[fp-1];
top = sexp_restore_stack(sexp_vector_ref(cp, 0), stack);
fp = sexp_unbox_fixnum(_ARG1);
self = _ARG2;
bc = sexp_procedure_code(self);
cp = sexp_procedure_vars(self);
ip = sexp_bytecode_data(bc) + sexp_unbox_fixnum(_ARG3);
i = sexp_unbox_fixnum(_ARG4);
top -= 4;
_ARG1 = tmp1;
break;
case SEXP_OP_CALLCC:
stack[top] = SEXP_ONE;
stack[top+1] = sexp_make_fixnum(ip-sexp_bytecode_data(bc));
stack[top+2] = self;
stack[top+3] = sexp_make_fixnum(fp);
tmp1 = _ARG1;
i = 1;
sexp_context_top(ctx) = top;
tmp2 = sexp_make_vector(ctx, SEXP_ONE, SEXP_UNDEF);
sexp_vector_set(tmp2, SEXP_ZERO, sexp_save_stack(ctx, stack, top+4));
_ARG1 = sexp_make_procedure(ctx,
SEXP_ZERO,
SEXP_ONE,
sexp_global(ctx, SEXP_G_RESUMECC_BYTECODE),
tmp2);
top++;
ip -= sizeof(sexp);
goto make_call;
case SEXP_OP_APPLY1:
tmp1 = _ARG1;
tmp2 = _ARG2;
i = sexp_unbox_fixnum(sexp_length(ctx, tmp2));
top += (i-2);
for ( ; sexp_pairp(tmp2); tmp2=sexp_cdr(tmp2), top--)
_ARG1 = sexp_car(tmp2);
top += i+1;
ip -= sizeof(sexp);
goto make_call;
case SEXP_OP_TAIL_CALL:
_ALIGN_IP();
i = sexp_unbox_fixnum(_WORD0); /* number of params */
tmp1 = _ARG1; /* procedure to call */
/* save frame info */
tmp2 = stack[fp+3];
j = sexp_unbox_fixnum(stack[fp]);
self = stack[fp+2];
bc = sexp_procedure_code(self);
cp = sexp_procedure_vars(self);
ip = (sexp_bytecode_data(bc)
+ sexp_unbox_fixnum(stack[fp+1])) - sizeof(sexp);
/* copy new args into place */
for (k=0; k<i; k++)
stack[fp-j+k] = stack[top-1-i+k];
top = fp+i-j+1;
fp = sexp_unbox_fixnum(tmp2);
goto make_call;
case SEXP_OP_CALL:
#if SEXP_USE_CHECK_STACK
if (top+16 >= SEXP_INIT_STACK_SIZE) {
_ARG1 = sexp_global(ctx, SEXP_G_OOS_ERROR);
goto end_loop;
}
#endif
_ALIGN_IP();
i = sexp_unbox_fixnum(_WORD0);
tmp1 = _ARG1;
make_call:
if (sexp_opcodep(tmp1)) {
/* compile non-inlined opcode applications on the fly */
sexp_context_top(ctx) = top;
tmp1 = make_opcode_procedure(ctx, tmp1, i);
if (sexp_exceptionp(tmp1)) {
_ARG1 = tmp1;
goto call_error_handler;
}
}
if (! sexp_procedurep(tmp1))
sexp_raise("non procedure application", sexp_list1(ctx, tmp1));
j = i - sexp_unbox_fixnum(sexp_procedure_num_args(tmp1));
if (j < 0)
sexp_raise("not enough args",
sexp_list2(ctx, tmp1, sexp_make_fixnum(i)));
if (j > 0) {
if (sexp_procedure_variadic_p(tmp1)) {
stack[top-i-1] = sexp_cons(ctx, stack[top-i-1], SEXP_NULL);
for (k=top-i; k<top-(i-j)-1; k++)
stack[top-i-1] = sexp_cons(ctx, stack[k], stack[top-i-1]);
for ( ; k<top; k++)
stack[k-j+1] = stack[k];
top -= (j-1);
i -= (j-1);
} else {
sexp_raise("too many args",
sexp_list2(ctx, tmp1, sexp_make_fixnum(i)));
}
} else if (sexp_procedure_variadic_p(tmp1)) {
/* shift stack, set extra arg to null */
for (k=top; k>=top-i; k--)
stack[k] = stack[k-1];
stack[top-i-1] = SEXP_NULL;
top++;
i++;
}
_ARG1 = sexp_make_fixnum(i);
stack[top] = sexp_make_fixnum(ip+sizeof(sexp)-sexp_bytecode_data(bc));
stack[top+1] = self;
stack[top+2] = sexp_make_fixnum(fp);
top += 3;
self = tmp1;
bc = sexp_procedure_code(self);
ip = sexp_bytecode_data(bc);
cp = sexp_procedure_vars(self);
fp = top-4;
break;
case SEXP_OP_FCALL0:
_ALIGN_IP();
sexp_context_top(ctx) = top;
sexp_context_last_fp(ctx) = fp;
tmp1 = ((sexp_proc1)sexp_opcode_func(_WORD0))(ctx sexp_api_pass(_WORD0, 0));
sexp_fcall_return(tmp1, -1)
break;
case SEXP_OP_FCALL1:
_ALIGN_IP();
sexp_context_top(ctx) = top;
tmp1 = ((sexp_proc2)sexp_opcode_func(_WORD0))(ctx sexp_api_pass(_WORD0, 1), _ARG1);
sexp_fcall_return(tmp1, 0)
break;
case SEXP_OP_FCALL2:
_ALIGN_IP();
sexp_context_top(ctx) = top;
tmp1 = ((sexp_proc3)sexp_opcode_func(_WORD0))(ctx sexp_api_pass(_WORD0, 2), _ARG1, _ARG2);
sexp_fcall_return(tmp1, 1)
break;
case SEXP_OP_FCALL3:
_ALIGN_IP();
sexp_context_top(ctx) = top;
tmp1 = ((sexp_proc4)sexp_opcode_func(_WORD0))(ctx sexp_api_pass(_WORD0, 3), _ARG1, _ARG2, _ARG3);
sexp_fcall_return(tmp1, 2)
break;
case SEXP_OP_FCALL4:
_ALIGN_IP();
sexp_context_top(ctx) = top;
tmp1 = ((sexp_proc5)sexp_opcode_func(_WORD0))(ctx sexp_api_pass(_WORD0, 4), _ARG1, _ARG2, _ARG3, _ARG4);
sexp_fcall_return(tmp1, 3)
break;
#if SEXP_USE_EXTENDED_FCALL
case SEXP_OP_FCALLN:
_ALIGN_IP();
sexp_context_top(ctx) = top;
i = sexp_opcode_num_args(_WORD0);
tmp1 = sexp_fcall(ctx, self, i, _WORD0);
sexp_fcall_return(tmp1, i-1)
break;
#endif
case SEXP_OP_JUMP_UNLESS:
_ALIGN_IP();
if (stack[--top] == SEXP_FALSE)
ip += _SWORD0;
else
ip += sizeof(sexp_sint_t);
break;
case SEXP_OP_JUMP:
_ALIGN_IP();
ip += _SWORD0;
break;
case SEXP_OP_PUSH:
_ALIGN_IP();
_PUSH(_WORD0);
ip += sizeof(sexp);
break;
case SEXP_OP_DROP:
top--;
break;
case SEXP_OP_GLOBAL_REF:
_ALIGN_IP();
if (sexp_cdr(_WORD0) == SEXP_UNDEF)
sexp_raise("undefined variable", sexp_list1(ctx, sexp_car(_WORD0)));
/* ... FALLTHROUGH ... */
case SEXP_OP_GLOBAL_KNOWN_REF:
_ALIGN_IP();
_PUSH(sexp_cdr(_WORD0));
ip += sizeof(sexp);
break;
#if SEXP_USE_GREEN_THREADS
case SEXP_OP_PARAMETER_REF:
_ALIGN_IP();
tmp2 = _WORD0;
ip += sizeof(sexp);
for (tmp1=sexp_context_params(ctx); sexp_pairp(tmp1); tmp1=sexp_cdr(tmp1))
if (sexp_caar(tmp1) == tmp2) {
_PUSH(sexp_car(tmp1));
goto loop;
}
_PUSH(sexp_opcode_data(tmp2));
break;
#endif
case SEXP_OP_STACK_REF:
_ALIGN_IP();
stack[top] = stack[top - _SWORD0];
ip += sizeof(sexp);
top++;
break;
case SEXP_OP_LOCAL_REF:
_ALIGN_IP();
stack[top] = stack[fp - 1 - _SWORD0];
ip += sizeof(sexp);
top++;
break;
case SEXP_OP_LOCAL_SET:
_ALIGN_IP();
stack[fp - 1 - _SWORD0] = _ARG1;
_ARG1 = SEXP_VOID;
ip += sizeof(sexp);
break;
case SEXP_OP_CLOSURE_REF:
_ALIGN_IP();
_PUSH(sexp_vector_ref(cp, sexp_make_fixnum(_WORD0)));
ip += sizeof(sexp);
break;
case SEXP_OP_VECTOR_REF:
if (! sexp_vectorp(_ARG1))
sexp_raise("vector-ref: not a vector", sexp_list1(ctx, _ARG1));
else if (! sexp_fixnump(_ARG2))
sexp_raise("vector-ref: not an integer", sexp_list1(ctx, _ARG2));
i = sexp_unbox_fixnum(_ARG2);
if ((i < 0) || (i >= sexp_vector_length(_ARG1)))
sexp_raise("vector-ref: index out of range", sexp_list2(ctx, _ARG1, _ARG2));
_ARG2 = sexp_vector_ref(_ARG1, _ARG2);
top--;
break;
case SEXP_OP_VECTOR_SET:
if (! sexp_vectorp(_ARG1))
sexp_raise("vector-set!: not a vector", sexp_list1(ctx, _ARG1));
else if (sexp_immutablep(_ARG1))
sexp_raise("vector-set!: immutable vector", sexp_list1(ctx, _ARG1));
else if (! sexp_fixnump(_ARG2))
sexp_raise("vector-set!: not an integer", sexp_list1(ctx, _ARG2));
i = sexp_unbox_fixnum(_ARG2);
if ((i < 0) || (i >= sexp_vector_length(_ARG1)))
sexp_raise("vector-set!: index out of range", sexp_list2(ctx, _ARG1, _ARG2));
sexp_vector_set(_ARG1, _ARG2, _ARG3);
_ARG3 = SEXP_VOID;
top-=2;
break;
case SEXP_OP_VECTOR_LENGTH:
if (! sexp_vectorp(_ARG1))
sexp_raise("vector-length: not a vector", sexp_list1(ctx, _ARG1));
_ARG1 = sexp_make_fixnum(sexp_vector_length(_ARG1));
break;
case SEXP_OP_BYTES_REF:
case SEXP_OP_STRING_REF:
if (! sexp_stringp(_ARG1))
sexp_raise("string-ref: not a string", sexp_list1(ctx, _ARG1));
else if (! sexp_fixnump(_ARG2))
sexp_raise("string-ref: not an integer", sexp_list1(ctx, _ARG2));
i = sexp_unbox_fixnum(_ARG2);
if ((i < 0) || (i >= sexp_string_length(_ARG1)))
sexp_raise("string-ref: index out of range", sexp_list2(ctx, _ARG1, _ARG2));
if (ip[-1] == SEXP_OP_BYTES_REF)
_ARG2 = sexp_bytes_ref(_ARG1, _ARG2);
else
#if SEXP_USE_UTF8_STRINGS
_ARG2 = sexp_string_utf8_ref(ctx, _ARG1, _ARG2);
#else
_ARG2 = sexp_string_ref(_ARG1, _ARG2);
#endif
top--;
break;
case SEXP_OP_BYTES_SET:
case SEXP_OP_STRING_SET:
if (! sexp_stringp(_ARG1))
sexp_raise("string-set!: not a string", sexp_list1(ctx, _ARG1));
else if (sexp_immutablep(_ARG1))
sexp_raise("string-set!: immutable string", sexp_list1(ctx, _ARG1));
else if (! sexp_fixnump(_ARG2))
sexp_raise("string-set!: not an integer", sexp_list1(ctx, _ARG2));
else if (! sexp_charp(_ARG3))
sexp_raise("string-set!: not a char", sexp_list1(ctx, _ARG3));
i = sexp_unbox_fixnum(_ARG2);
if ((i < 0) || (i >= sexp_string_length(_ARG1)))
sexp_raise("string-set!: index out of range", sexp_list2(ctx, _ARG1, _ARG2));
if (ip[-1] == SEXP_OP_BYTES_SET)
sexp_bytes_set(_ARG1, _ARG2, _ARG3);
else
#if SEXP_USE_UTF8_STRINGS
sexp_string_utf8_set(ctx, _ARG1, _ARG2, _ARG3);
#else
sexp_string_set(_ARG1, _ARG2, _ARG3);
#endif
_ARG3 = SEXP_VOID;
top-=2;
break;
case SEXP_OP_BYTES_LENGTH:
if (! sexp_stringp(_ARG1))
sexp_raise("bytes-length: not a byte-vector", sexp_list1(ctx, _ARG1));
_ARG1 = sexp_make_fixnum(sexp_bytes_length(_ARG1));
break;
case SEXP_OP_STRING_LENGTH:
if (! sexp_stringp(_ARG1))
sexp_raise("string-length: not a string", sexp_list1(ctx, _ARG1));
#if SEXP_USE_UTF8_STRINGS
_ARG1 = sexp_make_fixnum(sexp_string_utf8_length((unsigned char*)sexp_string_data(_ARG1), sexp_string_length(_ARG1)));
#else
_ARG1 = sexp_make_fixnum(sexp_string_length(_ARG1));
#endif
break;
case SEXP_OP_MAKE_PROCEDURE:
sexp_context_top(ctx) = top;
_ARG4 = sexp_make_procedure(ctx, _ARG1, _ARG2, _ARG3, _ARG4);
top-=3;
break;
case SEXP_OP_MAKE_VECTOR:
sexp_context_top(ctx) = top;
if (! sexp_fixnump(_ARG1))
sexp_raise("make-vector: not an integer", sexp_list1(ctx, _ARG1));
_ARG2 = sexp_make_vector(ctx, _ARG1, _ARG2);
top--;
break;
case SEXP_OP_MAKE_EXCEPTION:
_ARG5 = sexp_make_exception(ctx, _ARG1, _ARG2, _ARG3, _ARG4, _ARG5);
top -= 4;
break;
case SEXP_OP_AND:
_ARG2 = sexp_make_boolean((_ARG1 != SEXP_FALSE) && (_ARG2 != SEXP_FALSE));
top--;
break;
case SEXP_OP_EOFP:
_ARG1 = sexp_make_boolean(_ARG1 == SEXP_EOF); break;
case SEXP_OP_NULLP:
_ARG1 = sexp_make_boolean(sexp_nullp(_ARG1)); break;
case SEXP_OP_FIXNUMP:
_ARG1 = sexp_make_boolean(sexp_fixnump(_ARG1)); break;
case SEXP_OP_SYMBOLP:
_ARG1 = sexp_make_boolean(sexp_symbolp(_ARG1)); break;
case SEXP_OP_CHARP:
_ARG1 = sexp_make_boolean(sexp_charp(_ARG1)); break;
case SEXP_OP_ISA:
tmp1 = _ARG1, tmp2 = _ARG2;
if (! sexp_typep(tmp2)) sexp_raise("is-a?: not a type", tmp2);
top--;
goto do_check_type;
case SEXP_OP_TYPEP:
_ALIGN_IP();
tmp1 = _ARG1, tmp2 = sexp_type_by_index(ctx, _UWORD0);
ip += sizeof(sexp);
do_check_type:
_ARG1 = sexp_make_boolean(sexp_check_type(ctx, tmp1, tmp2));
break;
case SEXP_OP_MAKE:
_ALIGN_IP();
_PUSH(sexp_alloc_tagged(ctx, _UWORD1, _UWORD0));
ip += sizeof(sexp)*2;
break;
case SEXP_OP_SLOT_REF:
_ALIGN_IP();
if (! sexp_check_type(ctx, _ARG1, sexp_type_by_index(ctx, _UWORD0)))
sexp_raise("slot-ref: bad type", sexp_list2(ctx, tmp1=sexp_c_string(ctx, sexp_type_name_by_index(ctx, _UWORD0), -1), _ARG1));
_ARG1 = sexp_slot_ref(_ARG1, _UWORD1);
ip += sizeof(sexp)*2;
break;
case SEXP_OP_SLOT_SET:
_ALIGN_IP();
if (! sexp_check_type(ctx, _ARG1, sexp_type_by_index(ctx, _UWORD0)))
sexp_raise("slot-set!: bad type", sexp_list2(ctx, tmp1=sexp_c_string(ctx, sexp_type_name_by_index(ctx, _UWORD0), -1), _ARG1));
else if (sexp_immutablep(_ARG1))
sexp_raise("slot-set!: immutable object", sexp_list1(ctx, _ARG1));
sexp_slot_set(_ARG1, _UWORD1, _ARG2);
_ARG2 = SEXP_VOID;
ip += sizeof(sexp)*2;
top--;
break;
case SEXP_OP_SLOTN_REF:
if (! sexp_typep(_ARG1))
sexp_raise("slot-ref: not a record type", sexp_list1(ctx, _ARG1));
else if (! sexp_check_type(ctx, _ARG2, _ARG1))
sexp_raise("slot-ref: bad type", sexp_list1(ctx, _ARG2));
else if (! sexp_fixnump(_ARG3))
sexp_raise("slot-ref: not an integer", sexp_list1(ctx, _ARG3));
_ARG3 = sexp_slot_ref(_ARG2, sexp_unbox_fixnum(_ARG3));
top-=2;
break;
case SEXP_OP_SLOTN_SET:
if (! sexp_typep(_ARG1))
sexp_raise("slot-set!: not a record type", sexp_list1(ctx, _ARG1));
else if (! sexp_check_type(ctx, _ARG2, _ARG1))
sexp_raise("slot-set!: bad type", sexp_list1(ctx, _ARG2));
else if (sexp_immutablep(_ARG2))
sexp_raise("slot-set!: immutable object", sexp_list1(ctx, _ARG2));
else if (! sexp_fixnump(_ARG3))
sexp_raise("slot-set!: not an integer", sexp_list1(ctx, _ARG3));
sexp_slot_set(_ARG2, sexp_unbox_fixnum(_ARG3), _ARG4);
_ARG4 = SEXP_VOID;
top-=3;
break;
case SEXP_OP_CAR:
if (! sexp_pairp(_ARG1))
sexp_raise("car: not a pair", sexp_list1(ctx, _ARG1));
_ARG1 = sexp_car(_ARG1); break;
case SEXP_OP_CDR:
if (! sexp_pairp(_ARG1))
sexp_raise("cdr: not a pair", sexp_list1(ctx, _ARG1));
_ARG1 = sexp_cdr(_ARG1); break;
case SEXP_OP_SET_CAR:
if (! sexp_pairp(_ARG1))
sexp_raise("set-car!: not a pair", sexp_list1(ctx, _ARG1));
else if (sexp_immutablep(_ARG1))
sexp_raise("set-car!: immutable pair", sexp_list1(ctx, _ARG1));
sexp_car(_ARG1) = _ARG2;
_ARG2 = SEXP_VOID;
top--;
break;
case SEXP_OP_SET_CDR:
if (! sexp_pairp(_ARG1))
sexp_raise("set-cdr!: not a pair", sexp_list1(ctx, _ARG1));
else if (sexp_immutablep(_ARG1))
sexp_raise("set-cdr!: immutable pair", sexp_list1(ctx, _ARG1));
sexp_cdr(_ARG1) = _ARG2;
_ARG2 = SEXP_VOID;
top--;
break;
case SEXP_OP_CONS:
sexp_context_top(ctx) = top;
_ARG2 = sexp_cons(ctx, _ARG1, _ARG2);
top--;
break;
case SEXP_OP_ADD:
tmp1 = _ARG1, tmp2 = _ARG2;
sexp_context_top(ctx) = --top;
#if SEXP_USE_BIGNUMS
if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2)) {
j = sexp_unbox_fixnum(tmp1) + sexp_unbox_fixnum(tmp2);
if ((j < SEXP_MIN_FIXNUM) || (j > SEXP_MAX_FIXNUM))
_ARG1 = sexp_add(ctx, tmp1=sexp_fixnum_to_bignum(ctx, tmp1), tmp2);
else
_ARG1 = sexp_make_fixnum(j);
}
else {
_ARG1 = sexp_add(ctx, tmp1, tmp2);
sexp_check_exception();
}
#else
if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2))
_ARG1 = sexp_fx_add(tmp1, tmp2);
#if SEXP_USE_FLONUMS
else if (sexp_flonump(tmp1) && sexp_flonump(tmp2))
_ARG1 = sexp_fp_add(ctx, tmp1, tmp2);
else if (sexp_flonump(tmp1) && sexp_fixnump(tmp2))
_ARG1 = sexp_make_flonum(ctx, sexp_flonum_value(tmp1) + (double)sexp_unbox_fixnum(tmp2));
else if (sexp_fixnump(tmp1) && sexp_flonump(tmp2))
_ARG1 = sexp_make_flonum(ctx, (double)sexp_unbox_fixnum(tmp1) + sexp_flonum_value(tmp2));
#endif
else sexp_raise("+: not a number", sexp_list2(ctx, tmp1, tmp2));
#endif
break;
case SEXP_OP_SUB:
tmp1 = _ARG1, tmp2 = _ARG2;
sexp_context_top(ctx) = --top;
#if SEXP_USE_BIGNUMS
if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2)) {
j = sexp_unbox_fixnum(tmp1) - sexp_unbox_fixnum(tmp2);
if ((j < SEXP_MIN_FIXNUM) || (j > SEXP_MAX_FIXNUM))
_ARG1 = sexp_sub(ctx, tmp1=sexp_fixnum_to_bignum(ctx, tmp1), tmp2);
else
_ARG1 = sexp_make_fixnum(j);
}
else {
_ARG1 = sexp_sub(ctx, tmp1, tmp2);
sexp_check_exception();
}
#else
if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2))
_ARG1 = sexp_fx_sub(tmp1, tmp2);
#if SEXP_USE_FLONUMS
else if (sexp_flonump(tmp1) && sexp_flonump(tmp2))
_ARG1 = sexp_fp_sub(ctx, tmp1, tmp2);
else if (sexp_flonump(tmp1) && sexp_fixnump(tmp2))
_ARG1 = sexp_make_flonum(ctx, sexp_flonum_value(tmp1) - (double)sexp_unbox_fixnum(tmp2));
else if (sexp_fixnump(tmp1) && sexp_flonump(tmp2))
_ARG1 = sexp_make_flonum(ctx, (double)sexp_unbox_fixnum(tmp1) - sexp_flonum_value(tmp2));
#endif
else sexp_raise("-: not a number", sexp_list2(ctx, tmp1, tmp2));
#endif
break;
case SEXP_OP_MUL:
tmp1 = _ARG1, tmp2 = _ARG2;
sexp_context_top(ctx) = --top;
#if SEXP_USE_BIGNUMS
if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2)) {
prod = (sexp_lsint_t)sexp_unbox_fixnum(tmp1) * sexp_unbox_fixnum(tmp2);
if ((prod < SEXP_MIN_FIXNUM) || (prod > SEXP_MAX_FIXNUM))
_ARG1 = sexp_mul(ctx, tmp1=sexp_fixnum_to_bignum(ctx, tmp1), tmp2);
else
_ARG1 = sexp_make_fixnum(prod);
}
else {
_ARG1 = sexp_mul(ctx, tmp1, tmp2);
sexp_check_exception();
}
#else
if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2))
_ARG1 = sexp_fx_mul(tmp1, tmp2);
#if SEXP_USE_FLONUMS
else if (sexp_flonump(tmp1) && sexp_flonump(tmp2))
_ARG1 = sexp_fp_mul(ctx, tmp1, tmp2);
else if (sexp_flonump(tmp1) && sexp_fixnump(tmp2))
_ARG1 = sexp_make_flonum(ctx, sexp_flonum_value(tmp1) * (double)sexp_unbox_fixnum(tmp2));
else if (sexp_fixnump(tmp1) && sexp_flonump(tmp2))
_ARG1 = sexp_make_flonum(ctx, (double)sexp_unbox_fixnum(tmp1) * sexp_flonum_value(tmp2));
#endif
else sexp_raise("*: not a number", sexp_list2(ctx, tmp1, tmp2));
#endif
break;
case SEXP_OP_DIV:
tmp1 = _ARG1, tmp2 = _ARG2;
sexp_context_top(ctx) = --top;
if (tmp2 == SEXP_ZERO) {
#if SEXP_USE_FLONUMS
if (sexp_flonump(tmp1) && sexp_flonum_value(tmp1) == 0.0)
_ARG1 = sexp_make_flonum(ctx, 0.0);
else
#endif
sexp_raise("divide by zero", SEXP_NULL);
} else if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2)) {
#if SEXP_USE_FLONUMS
tmp1 = sexp_fixnum_to_flonum(ctx, tmp1);
tmp2 = sexp_fixnum_to_flonum(ctx, tmp2);
_ARG1 = sexp_fp_div(ctx, tmp1, tmp2);
if (sexp_flonum_value(_ARG1) == trunc(sexp_flonum_value(_ARG1)))
_ARG1 = sexp_make_fixnum(sexp_flonum_value(_ARG1));
#else
_ARG1 = sexp_fx_div(tmp1, tmp2);
#endif
}
#if SEXP_USE_BIGNUMS
else {
_ARG1 = sexp_div(ctx, tmp1, tmp2);
sexp_check_exception();
}
#else
#if SEXP_USE_FLONUMS
else if (sexp_flonump(tmp1) && sexp_flonump(tmp2))
_ARG1 = sexp_fp_div(ctx, tmp1, tmp2);
else if (sexp_flonump(tmp1) && sexp_fixnump(tmp2))
_ARG1 = sexp_make_flonum(ctx, sexp_flonum_value(tmp1) / (double)sexp_unbox_fixnum(tmp2));
else if (sexp_fixnump(tmp1) && sexp_flonump(tmp2))
_ARG1 = sexp_make_flonum(ctx, (double)sexp_unbox_fixnum(tmp1) / sexp_flonum_value(tmp2));
#endif
else sexp_raise("/: not a number", sexp_list2(ctx, tmp1, tmp2));
#endif
break;
case SEXP_OP_QUOTIENT:
tmp1 = _ARG1, tmp2 = _ARG2;
sexp_context_top(ctx) = --top;
if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2)) {
if (tmp2 == SEXP_ZERO)
sexp_raise("divide by zero", SEXP_NULL);
_ARG1 = sexp_fx_div(tmp1, tmp2);
}
#if SEXP_USE_BIGNUMS
else {
_ARG1 = sexp_quotient(ctx, tmp1, tmp2);
sexp_check_exception();
}
#else
else sexp_raise("quotient: not an integer", sexp_list2(ctx, _ARG1, tmp2));
#endif
break;
case SEXP_OP_REMAINDER:
tmp1 = _ARG1, tmp2 = _ARG2;
sexp_context_top(ctx) = --top;
if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2)) {
if (tmp2 == SEXP_ZERO)
sexp_raise("divide by zero", SEXP_NULL);
_ARG1 = sexp_fx_rem(tmp1, tmp2);
}
#if SEXP_USE_BIGNUMS
else {
_ARG1 = sexp_remainder(ctx, tmp1, tmp2);
sexp_check_exception();
}
#else
else sexp_raise("remainder: not an integer", sexp_list2(ctx, _ARG1, tmp2));
#endif
break;
case SEXP_OP_LT:
tmp1 = _ARG1, tmp2 = _ARG2;
sexp_context_top(ctx) = --top;
if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2)) {
i = (sexp_sint_t)tmp1 < (sexp_sint_t)tmp2;
#if SEXP_USE_BIGNUMS
_ARG1 = sexp_make_boolean(i);
} else {
_ARG1 = sexp_compare(ctx, tmp1, tmp2);
sexp_check_exception();
_ARG1 = sexp_make_boolean(sexp_unbox_fixnum(_ARG1) < 0);
}
#else
#if SEXP_USE_FLONUMS
} else if (sexp_flonump(tmp1) && sexp_flonump(tmp2)) {
i = sexp_flonum_value(tmp1) < sexp_flonum_value(tmp2);
} else if (sexp_flonump(tmp1) && sexp_fixnump(tmp2)) {
i = sexp_flonum_value(tmp1) < (double)sexp_unbox_fixnum(tmp2);
} else if (sexp_fixnump(tmp1) && sexp_flonump(tmp2)) {
i = (double)sexp_unbox_fixnum(tmp1) < sexp_flonum_value(tmp2);
#endif
} else sexp_raise("<: not a number", sexp_list2(ctx, tmp1, tmp2));
_ARG1 = sexp_make_boolean(i);
#endif
break;
case SEXP_OP_LE:
tmp1 = _ARG1, tmp2 = _ARG2;
sexp_context_top(ctx) = --top;
if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2)) {
i = (sexp_sint_t)tmp1 <= (sexp_sint_t)tmp2;
#if SEXP_USE_BIGNUMS
_ARG1 = sexp_make_boolean(i);
} else {
_ARG1 = sexp_compare(ctx, tmp1, tmp2);
sexp_check_exception();
_ARG1 = sexp_make_boolean(sexp_unbox_fixnum(_ARG1) <= 0);
}
#else
#if SEXP_USE_FLONUMS
} else if (sexp_flonump(tmp1) && sexp_flonump(tmp2)) {
i = sexp_flonum_value(tmp1) <= sexp_flonum_value(tmp2);
} else if (sexp_flonump(tmp1) && sexp_fixnump(tmp2)) {
i = sexp_flonum_value(tmp1) <= (double)sexp_unbox_fixnum(tmp2);
} else if (sexp_fixnump(tmp1) && sexp_flonump(tmp2)) {
i = (double)sexp_unbox_fixnum(tmp1) <= sexp_flonum_value(tmp2);
#endif
} else sexp_raise("<=: not a number", sexp_list2(ctx, tmp1, tmp2));
_ARG1 = sexp_make_boolean(i);
#endif
break;
case SEXP_OP_EQN:
tmp1 = _ARG1, tmp2 = _ARG2;
sexp_context_top(ctx) = --top;
if (sexp_fixnump(tmp1) && sexp_fixnump(tmp2)) {
i = tmp1 == tmp2;
#if SEXP_USE_BIGNUMS
_ARG1 = sexp_make_boolean(i);
} else {
_ARG1 = sexp_compare(ctx, tmp1, tmp2);
sexp_check_exception();
_ARG1 = sexp_make_boolean(sexp_unbox_fixnum(_ARG1) == 0);
}
#else
#if SEXP_USE_FLONUMS
} else if (sexp_flonump(tmp1) && sexp_flonump(tmp2)) {
i = sexp_flonum_value(tmp1) == sexp_flonum_value(tmp2);
} else if (sexp_flonump(tmp1) && sexp_fixnump(tmp2)) {
i = sexp_flonum_value(tmp1) == (double)sexp_unbox_fixnum(tmp2);
} else if (sexp_fixnump(tmp1) && sexp_flonump(tmp2)) {
i = (double)sexp_unbox_fixnum(tmp1) == sexp_flonum_value(tmp2);
#endif
} else sexp_raise("=: not a number", sexp_list2(ctx, tmp1, tmp2));
_ARG1 = sexp_make_boolean(i);
#endif
break;
case SEXP_OP_EQ:
_ARG2 = sexp_make_boolean(_ARG1 == _ARG2);
top--;
break;
case SEXP_OP_FIX2FLO:
if (sexp_fixnump(_ARG1))
_ARG1 = sexp_fixnum_to_flonum(ctx, _ARG1);
#if SEXP_USE_BIGNUMS
else if (sexp_bignump(_ARG1))
_ARG1 = sexp_make_flonum(ctx, sexp_bignum_to_double(_ARG1));
#endif
else if (! sexp_flonump(_ARG1))
sexp_raise("exact->inexact: not a number", sexp_list1(ctx, _ARG1));
break;
case SEXP_OP_FLO2FIX:
if (sexp_flonump(_ARG1)) {
if (sexp_flonum_value(_ARG1) != trunc(sexp_flonum_value(_ARG1))) {
sexp_raise("inexact->exact: not an integer", sexp_list1(ctx, _ARG1));
#if SEXP_USE_BIGNUMS
} else if ((sexp_flonum_value(_ARG1) > SEXP_MAX_FIXNUM)
|| sexp_flonum_value(_ARG1) < SEXP_MIN_FIXNUM) {
_ARG1 = sexp_double_to_bignum(ctx, sexp_flonum_value(_ARG1));
#endif
} else {
_ARG1 = sexp_make_fixnum((sexp_sint_t)sexp_flonum_value(_ARG1));
}
} else if (! sexp_fixnump(_ARG1) && ! sexp_bignump(_ARG1)) {
sexp_raise("inexact->exact: not a number", sexp_list1(ctx, _ARG1));
}
break;
case SEXP_OP_CHAR2INT:
if (! sexp_charp(_ARG1))
sexp_raise("char->integer: not a character", sexp_list1(ctx, _ARG1));
_ARG1 = sexp_make_fixnum(sexp_unbox_character(_ARG1));
break;
case SEXP_OP_INT2CHAR:
if (! sexp_fixnump(_ARG1))
sexp_raise("integer->char: not an integer", sexp_list1(ctx, _ARG1));
_ARG1 = sexp_make_character(sexp_unbox_fixnum(_ARG1));
break;
case SEXP_OP_CHAR_UPCASE:
if (! sexp_charp(_ARG1))
sexp_raise("char-upcase: not a character", sexp_list1(ctx, _ARG1));
_ARG1 = sexp_make_character(toupper(sexp_unbox_character(_ARG1)));
break;
case SEXP_OP_CHAR_DOWNCASE:
if (! sexp_charp(_ARG1))
sexp_raise("char-downcase: not a character", sexp_list1(ctx, _ARG1));
_ARG1 = sexp_make_character(tolower(sexp_unbox_character(_ARG1)));
break;
case SEXP_OP_WRITE_CHAR:
if (! sexp_charp(_ARG1))
sexp_raise("write-char: not a character", sexp_list1(ctx, _ARG1));
if (! sexp_oportp(_ARG2))
sexp_raise("write-char: not an output-port", sexp_list1(ctx, _ARG2));
#if SEXP_USE_UTF8_STRINGS
if (sexp_unbox_character(_ARG1) >= 0x80)
sexp_write_utf8_char(ctx, sexp_unbox_character(_ARG1), _ARG2);
else
#endif
sexp_write_char(ctx, sexp_unbox_character(_ARG1), _ARG2);
_ARG2 = SEXP_VOID;
top--;
break;
case SEXP_OP_NEWLINE:
if (! sexp_oportp(_ARG1))
sexp_raise("newline: not an output-port", sexp_list1(ctx, _ARG1));
sexp_newline(ctx, _ARG1);
_ARG1 = SEXP_VOID;
break;
case SEXP_OP_READ_CHAR:
if (! sexp_iportp(_ARG1))
sexp_raise("read-char: not an input-port", sexp_list1(ctx, _ARG1));
i = sexp_read_char(ctx, _ARG1);
#if SEXP_USE_UTF8_STRINGS
if (i >= 0x80)
_ARG1 = sexp_read_utf8_char(ctx, _ARG1, i);
else
#endif
if (i == EOF) {
#if SEXP_USE_GREEN_THREADS
if ((errno == EAGAIN)
&& sexp_applicablep(sexp_global(ctx, SEXP_G_THREADS_BLOCKER))) {
sexp_apply1(ctx, sexp_global(ctx, SEXP_G_THREADS_BLOCKER), _ARG1);
fuel = 0;
ip--; /* try again */
} else
#endif
_ARG1 = SEXP_EOF;
} else
_ARG1 = sexp_make_character(i);
break;
case SEXP_OP_PEEK_CHAR:
if (! sexp_iportp(_ARG1))
sexp_raise("peek-char: not an input-port", sexp_list1(ctx, _ARG1));
i = sexp_read_char(ctx, _ARG1);
sexp_push_char(ctx, i, _ARG1);
if (i == EOF) {
#if SEXP_USE_GREEN_THREADS
if ((errno == EAGAIN)
&& sexp_applicablep(sexp_global(ctx, SEXP_G_THREADS_BLOCKER))) {
sexp_apply1(ctx, sexp_global(ctx, SEXP_G_THREADS_BLOCKER), _ARG1);
fuel = 0;
ip--; /* try again */
} else
#endif
_ARG1 = SEXP_EOF;
} else
_ARG1 = sexp_make_character(i);
break;
case SEXP_OP_YIELD:
#if SEXP_USE_GREEN_THREADS
fuel = 0;
#endif
_PUSH(SEXP_VOID);
break;
case SEXP_OP_RET:
i = sexp_unbox_fixnum(stack[fp]);
stack[fp-i] = _ARG1;
top = fp-i+1;
self = stack[fp+2];
bc = sexp_procedure_code(self);
ip = sexp_bytecode_data(bc) + sexp_unbox_fixnum(stack[fp+1]);
cp = sexp_procedure_vars(self);
fp = sexp_unbox_fixnum(stack[fp+3]);
break;
case SEXP_OP_DONE:
goto end_loop;
default:
sexp_raise("unknown opcode", sexp_list1(ctx, sexp_make_fixnum(*(ip-1))));
}
goto loop;
end_loop:
#if SEXP_USE_GREEN_THREADS
if (ctx != root_thread) {
if (sexp_context_refuel(root_thread) <= 0) {
/* the root already terminated */
_ARG1 = SEXP_VOID;
} else {
/* don't return from child threads */
sexp_context_refuel(ctx) = fuel = 0;
goto loop;
}
}
#endif
sexp_gc_release3(ctx);
sexp_context_top(ctx) = top;
return _ARG1;
}
/******************************* apply ********************************/
sexp sexp_apply1 (sexp ctx, sexp f, sexp x) {
sexp res;
sexp_gc_var1(args);
if (sexp_opcodep(f)) {
res = ((sexp_proc2)sexp_opcode_func(f))(ctx sexp_api_pass(f, 1), x);
} else {
sexp_gc_preserve1(ctx, args);
res = sexp_apply(ctx, f, args=sexp_list1(ctx, x));
sexp_gc_release1(ctx);
}
return res;
}
sexp sexp_apply (sexp ctx, sexp proc, sexp args) {
sexp res, ls, *stack = sexp_stack_data(sexp_context_stack(ctx));
sexp_sint_t top = sexp_context_top(ctx), len, offset;
sexp_gc_var1(tmp);
sexp_gc_preserve1(ctx, tmp);
len = sexp_unbox_fixnum(sexp_length(ctx, args));
if (sexp_opcodep(proc))
proc = tmp = make_opcode_procedure(ctx, proc, len);
if (! sexp_procedurep(proc)) {
res = sexp_exceptionp(proc) ? proc :
sexp_type_exception(ctx, NULL, SEXP_PROCEDURE, proc);
} else {
offset = top + len;
for (ls=args; sexp_pairp(ls); ls=sexp_cdr(ls), top++)
stack[--offset] = sexp_car(ls);
stack[top++] = sexp_make_fixnum(len);
stack[top++] = SEXP_ZERO;
stack[top++] = sexp_global(ctx, SEXP_G_FINAL_RESUMER);
stack[top++] = SEXP_ZERO;
sexp_context_top(ctx) = top;
res = sexp_vm(ctx, proc);
if (! res) res = SEXP_VOID; /* shouldn't happen */
}
sexp_gc_release1(ctx);
return res;
}