static Function *
link_code (JSVirtualMachine *vm, unsigned char *code, unsigned int code_len,
unsigned int consts_offset)
{
unsigned char *cp, *end;
JSInt32 i;
Compiled **reloc;
unsigned int cpos;
Function *f;
unsigned char *fixed_code;
/* Terminate the code with op `done'. */
fixed_code = js_malloc (vm, code_len + 1);
memcpy (fixed_code, code, code_len);
fixed_code[code_len] = 1; /* op `done' */
cp = fixed_code;
end = fixed_code + code_len + 1;
/* Alloc function closure. */
f = js_vm_alloc_destroyable (vm, sizeof (*f));
f->destroy = function_destroy;
/* Allocate space for our compiled code. <length> is enought. */
f->code = js_malloc (vm, (code_len + 1) * sizeof (Compiled));
reloc = js_calloc (vm, code_len + 1, sizeof (Compiled *));
/* Link phase 1: constants and symbols. */
cpos = 0;
while (cp < end)
{
switch (*cp++)
{
/* include c1switch.h */
#include "c1switch.h"
/* end include c1switch.h */
}
}
f->length = cpos;
/* Link phase 2: relative jumps. */
cp = fixed_code;
cpos = 0;
while (cp < end)
{
switch (*cp++)
{
/* include c2switch.h */
#include "c2switch.h"
/* end include c2switch.h */
}
}
/* Handle debug info. */
/* XXX */
js_free (reloc);
js_free (fixed_code);
return f;
}
JSBuiltinInfo *js_vm_builtin_info_create(JSVirtualMachine * vm)
{
JSNode prototype;
JSBuiltinInfo *i = js_vm_alloc_destroyable(vm, sizeof(*i));
i->destroy = destroy_builtin_info;
i->prototype = js_vm_object_new(vm);
/*
* Set the __proto__ property to null. We have no prototype object
* above us.
*/
prototype.type = JS_NULL;
js_vm_object_store_property(vm, i->prototype, vm->syms.s___proto__, &prototype);
return i;
}
void
js_vm_builtin_create(JSVirtualMachine * vm, JSNode * result,
JSBuiltinInfo * info, void *instance_context)
{
result->type = JS_BUILTIN;
result->u.vbuiltin = js_vm_alloc_destroyable(vm, sizeof(JSBuiltin));
result->u.vbuiltin->destroy = destroy_builtin;
result->u.vbuiltin->info = info;
if (instance_context) {
JSNode prototype;
result->u.vbuiltin->instance_context = instance_context;
result->u.vbuiltin->prototype = js_vm_object_new(vm);
/* Set the __proto__ chain. */
prototype.type = JS_OBJECT;
prototype.u.vobject = info->prototype;
js_vm_object_store_property(vm, result->u.vbuiltin->prototype,
vm->syms.s___proto__, &prototype);
}
}
int
js_vm_switch0_exec (JSVirtualMachine *vm, JSByteCode *bc,
JSSymtabEntry *symtab,
unsigned int num_symtab_entries,
unsigned int consts_offset,
unsigned int anonymous_function_offset,
/*unsigned char *debug_info, unsigned int debug_info_len,*/
JSNode *object, JSNode *func,
unsigned int argc, JSNode *argv)
{
int i;
unsigned int ui;
Function *global_f = NULL;
Function *f;
unsigned char *code = NULL;
char buf[512];
if (bc)
{
/* Executing byte-code. */
/* Find the code section. */
for (i = 0; i < bc->num_sects; i++)
if (bc->sects[i].type == JS_BCST_CODE)
code = bc->sects[i].data;
assert (code != NULL);
/* Enter all functions to the known functions of the VM. */
for (i = 0; i < num_symtab_entries; i++)
{
/* Need one function. */
f = js_vm_alloc_destroyable (vm, sizeof (*f));
f->destroy = function_destroy;
f->name = js_strdup (vm, symtab[i].name);
f->length = symtab[i + 1].offset - symtab[i].offset + 1;
f->code = js_malloc (vm, f->length);
memcpy (f->code, code + symtab[i].offset, f->length - 1);
f->code[f->length - 1] = 1; /* op `done' */
/* Link the code to our environment. */
link_code (vm, f->code, f->length, consts_offset);
if (strcmp (symtab[i].name, JS_GLOBAL_NAME) == 0)
global_f = f;
else
{
int is_anonymous = 0;
/* Check for the anonymous function. */
if (symtab[i].name[0] == '.' && symtab[i].name[1] == 'F'
&& symtab[i].name[2] == ':')
is_anonymous = 1;
if (vm->verbose > 3)
{
sprintf_P (buf, vmswt0_string_0,
symtab[i].name, symtab[i].offset,
symtab[i + 1].offset - symtab[i].offset);
if (is_anonymous)
sprintf_P (buf + strlen (buf), vmswt0_string_1,
anonymous_function_offset);
strcat (buf, JS_HOST_LINE_BREAK);
//js_iostream_write (vm->s_stderr, buf, strlen (buf));
}
if (is_anonymous)
{
sprintf (buf, ".F:%u",
(unsigned int) atoi (symtab[i].name + 3)
+ anonymous_function_offset);
ui = js_vm_intern (vm, buf);
}
else
ui = js_vm_intern (vm, symtab[i].name);
vm->globals[ui].type = JS_FUNC;
vm->globals[ui].u.vfunction = js_vm_make_function (vm, f);
}
}
}
else
{
/* Applying arguments to function. */
if (func->type != JS_FUNC)
{
sprintf_P (vm->error, vmswt0_string_2);
return 0;
}
if (vm->verbose > 1)
{
sprintf_P (buf, vmswt0_string_3, JS_HOST_LINE_BREAK);
//js_iostream_write (vm->s_stderr, buf, strlen (buf));
}
f = func->u.vfunction->implementation;
execute_code (vm, object, f, argc, argv);
}
if (global_f)
{
if (vm->verbose > 1)
{
sprintf_P (buf, vmswt0_string_4, global_f->name, JS_HOST_LINE_BREAK);
//js_iostream_write (vm->s_stderr, buf, strlen (buf));
}
/* Execute. */
execute_code (vm, NULL, global_f, 0, NULL);
}
return 1;
}
