|
|
|
|
|
|
#include "global.h" |
#include "interpret.h" |
#include "object.h" |
#include "program.h" |
#include "svalue.h" |
#include "array.h" |
#include "mapping.h" |
#include "pike_error.h" |
#include "stralloc.h" |
#include "constants.h" |
#include "pike_macros.h" |
#include "multiset.h" |
#include "backend.h" |
#include "operators.h" |
#include "opcodes.h" |
#include "pike_embed.h" |
#include "lex.h" |
#include "builtin_functions.h" |
#include "signal_handler.h" |
#include "gc.h" |
#include "threads.h" |
#include "callback.h" |
#include "fd_control.h" |
#include "pike_security.h" |
#include "bignum.h" |
#include "pike_types.h" |
#include "pikecode.h" |
|
#include <fcntl.h> |
#include <errno.h> |
#include <ctype.h> |
|
#ifdef HAVE_MMAP |
#ifdef HAVE_SYS_TYPES_H |
#include <sys/types.h> |
#endif |
|
#ifdef HAVE_SYS_MMAN_H |
#include <sys/mman.h> |
#endif |
|
#ifdef MAP_NORESERVE |
#define USE_MMAP_FOR_STACK |
#endif |
#endif |
|
#ifdef USE_DTRACE |
#include "dtrace_probes.h" |
#else |
#include "dtrace/dtrace_probes_disabled.h" |
#endif |
|
|
|
|
#define EVALUATOR_STACK_SIZE 100000 |
|
#define TRACE_LEN (100 + Pike_interpreter.trace_level * 10) |
|
|
|
|
#define SVALUE_STACK_MARGIN (100 + LOW_SVALUE_STACK_MARGIN) |
|
#define C_STACK_MARGIN (20000 + LOW_C_STACK_MARGIN) |
|
|
|
|
#define LOW_SVALUE_STACK_MARGIN 20 |
#define LOW_C_STACK_MARGIN 500 |
|
#ifdef HAVE_COMPUTED_GOTO |
PIKE_OPCODE_T *fcode_to_opcode = NULL; |
struct op_2_f *opcode_to_fcode = NULL; |
#endif /* HAVE_COMPUTED_GOTO */ |
|
PMOD_EXPORT const char Pike_check_stack_errmsg[] = |
"Svalue stack overflow. " |
"(%ld of %ld entries on stack, needed %ld more entries)\n"; |
PMOD_EXPORT const char Pike_check_mark_stack_errmsg[] = |
"Mark stack overflow.\n"; |
PMOD_EXPORT const char Pike_check_c_stack_errmsg[] = |
"C stack overflow.\n"; |
#ifdef PIKE_DEBUG |
PMOD_EXPORT const char msg_stack_error[] = |
"Stack error.\n"; |
PMOD_EXPORT const char msg_pop_neg[] = |
"Popping negative number of args.... (%"PRINTPTRDIFFT"d) \n"; |
#endif |
|
|
#ifdef PIKE_DEBUG |
static char trace_buffer[2000]; |
#endif |
|
#ifdef INTERNAL_PROFILING |
PMOD_EXPORT unsigned long evaluator_callback_calls = 0; |
#endif |
|
|
int fast_check_threads_counter = 0; |
|
|
|
|
static struct Pike_interpreter_struct static_pike_interpreter; |
|
|
|
|
PMOD_EXPORT struct Pike_interpreter_struct *Pike_interpreter_pointer = |
&static_pike_interpreter; |
PMOD_EXPORT int Pike_stack_size = EVALUATOR_STACK_SIZE; |
|
static void do_trace_call(INT32 args, dynamic_buffer *old_buf); |
static void do_trace_func_return (int got_retval, struct object *o, int fun); |
static void do_trace_return (int got_retval, dynamic_buffer *old_buf); |
|
PMOD_EXPORT struct Pike_interpreter_struct * pike_get_interpreter_pointer() |
{ |
return Pike_interpreter_pointer; |
} |
|
void push_sp_mark(void) |
{ |
if(Pike_mark_sp == Pike_interpreter.mark_stack + Pike_stack_size) |
Pike_error("No more mark stack!\n"); |
*Pike_mark_sp++=Pike_sp; |
} |
ptrdiff_t pop_sp_mark(void) |
{ |
#ifdef PIKE_DEBUG |
if(Pike_mark_sp < Pike_interpreter.mark_stack) |
Pike_fatal("Mark stack underflow!\n"); |
#endif |
return Pike_sp - *--Pike_mark_sp; |
} |
|
|
#ifdef PIKE_DEBUG |
void gc_mark_stack_external (struct pike_frame *f, |
struct svalue *stack_p, struct svalue *stack) |
{ |
for (; f; f = f->next) |
GC_ENTER (f, T_PIKE_FRAME) { |
if (!debug_gc_check (f, " as frame on stack")) { |
gc_mark_external (f->current_object, " in current_object in frame on stack"); |
gc_mark_external (f->current_program, " in current_program in frame on stack"); |
if (f->locals) { |
if (f->flags & PIKE_FRAME_MALLOCED_LOCALS) { |
gc_mark_external_svalues(f->locals, f->num_locals, |
" in malloced locals of trampoline frame on stack"); |
} else { |
if (f->locals > stack_p || (stack_p - f->locals) >= 0x10000) { |
fatal("Unreasonable locals: stack:%p locals:%p\n", |
stack_p, f->locals); |
} |
gc_mark_external_svalues (f->locals, stack_p - f->locals, " on svalue stack"); |
stack_p = f->locals; |
} |
} |
} |
} GC_LEAVE; |
if (stack != stack_p) |
gc_mark_external_svalues (stack, stack_p - stack, " on svalue stack"); |
} |
|
static void gc_check_stack_callback(struct callback *foo, void *bar, void *gazonk) |
{ |
if (Pike_interpreter.evaluator_stack |
#ifdef PIKE_DEBUG |
|
* locate_references from gdb. */ |
&& Pike_sp != (void *) -1 |
#endif |
) |
gc_mark_stack_external (Pike_fp, Pike_sp, Pike_interpreter.evaluator_stack); |
} |
#endif |
|
|
|
|
|
|
|
|
|
|
|
|
|
static int eval_instruction(PIKE_OPCODE_T *pc); |
|
PMOD_EXPORT int low_init_interpreter(struct Pike_interpreter_struct *interpreter) |
{ |
#ifdef USE_MMAP_FOR_STACK |
static int fd = -1; |
|
#ifndef MAP_VARIABLE |
#define MAP_VARIABLE 0 |
#endif |
|
#ifndef MAP_PRIVATE |
#define MAP_PRIVATE 0 |
#endif |
|
#ifndef MAP_FAILED |
#define MAP_FAILED -1 |
#endif |
|
#ifndef MAP_ANONYMOUS |
#define MAP_ANONYMOUS 0 |
if(fd == -1) |
{ |
while(1) |
{ |
fd=open("/dev/zero",O_RDONLY); |
if(fd >= 0) break; |
if(errno != EINTR) |
{ |
interpreter->evaluator_stack=0; |
interpreter->mark_stack=0; |
goto use_malloc; |
#define NEED_USE_MALLOC_LABEL |
} |
} |
|
set_close_on_exec(fd, 1); |
} |
#endif |
|
#define MMALLOC(X,Y) \ |
(Y *)mmap(0, (X)*sizeof(Y), PROT_READ|PROT_WRITE, \ |
MAP_NORESERVE|MAP_PRIVATE|MAP_ANONYMOUS, fd, 0) |
|
interpreter->evaluator_stack_malloced = 0; |
interpreter->mark_stack_malloced = 0; |
interpreter->evaluator_stack = MMALLOC(Pike_stack_size,struct svalue); |
interpreter->mark_stack = MMALLOC(Pike_stack_size, struct svalue *); |
if((char *)MAP_FAILED == (char *)interpreter->evaluator_stack) { |
interpreter->evaluator_stack = 0; |
interpreter->evaluator_stack_malloced = 1; |
} |
if((char *)MAP_FAILED == (char *)interpreter->mark_stack) { |
interpreter->mark_stack = 0; |
interpreter->mark_stack_malloced = 1; |
} |
|
#ifdef NEED_USE_MALLOC_LABEL |
use_malloc: |
#endif /* NEED_USE_MALLOC_LABEL */ |
|
#else /* !USE_MMAP_FOR_STACK */ |
interpreter->evaluator_stack = 0; |
interpreter->evaluator_stack_malloced = 1; |
interpreter->mark_stack = 0; |
interpreter->mark_stack_malloced = 1; |
#endif /* USE_MMAP_FOR_STACK */ |
|
if(!interpreter->evaluator_stack) |
{ |
if (!(interpreter->evaluator_stack = |
(struct svalue *)malloc(Pike_stack_size*sizeof(struct svalue)))) |
return 1; |
} |
|
if(!interpreter->mark_stack) |
{ |
if (!(interpreter->mark_stack = |
(struct svalue **)malloc(Pike_stack_size*sizeof(struct svalue *)))) |
return 2; |
} |
|
interpreter->stack_pointer = interpreter->evaluator_stack; |
interpreter->mark_stack_pointer = interpreter->mark_stack; |
interpreter->frame_pointer = 0; |
interpreter->catch_ctx = NULL; |
interpreter->catching_eval_jmpbuf = NULL; |
|
interpreter->svalue_stack_margin = SVALUE_STACK_MARGIN; |
interpreter->c_stack_margin = C_STACK_MARGIN; |
|
#ifdef PROFILING |
interpreter->unlocked_time = 0; |
interpreter->accounted_time = 0; |
#endif |
|
interpreter->trace_level = default_t_flag; |
|
return 0; |
} |
|
static struct pike_frame *free_pike_frame; |
|
PMOD_EXPORT void init_interpreter(void) |
{ |
PIKE_MEMPOOL_CREATE(&free_pike_frame); |
if (low_init_interpreter(Pike_interpreter_pointer)) { |
Pike_fatal("Out of memory initializing the interpreter stack.\n"); |
} |
|
#ifdef PIKE_DEBUG |
{ |
static struct callback *spcb; |
if(!spcb) |
{ |
spcb=add_gc_callback(gc_check_stack_callback,0,0); |
dmalloc_accept_leak(spcb); |
} |
} |
#endif |
#if defined(HAVE_COMPUTED_GOTO) || defined(PIKE_USE_MACHINE_CODE) |
{ |
static int tables_need_init=1; |
if(tables_need_init) { |
|
#if !defined(OPCODE_INLINE_RETURN) |
eval_instruction(NULL); |
#endif |
#if defined(PIKE_USE_MACHINE_CODE) && !defined(PIKE_DEBUG) |
|
#define SET_INSTR_ADDRESS(X, Y) (instrs[(X)-F_OFFSET].address = (void *)Y) |
SET_INSTR_ADDRESS(F_COMPL, o_compl); |
SET_INSTR_ADDRESS(F_LSH, o_lsh); |
SET_INSTR_ADDRESS(F_RSH, o_rsh); |
SET_INSTR_ADDRESS(F_SUBTRACT, o_subtract); |
SET_INSTR_ADDRESS(F_AND, o_and); |
SET_INSTR_ADDRESS(F_OR, o_or); |
SET_INSTR_ADDRESS(F_XOR, o_xor); |
SET_INSTR_ADDRESS(F_MULTIPLY, o_multiply); |
SET_INSTR_ADDRESS(F_DIVIDE, o_divide); |
SET_INSTR_ADDRESS(F_MOD, o_mod); |
SET_INSTR_ADDRESS(F_CAST, f_cast); |
SET_INSTR_ADDRESS(F_CAST_TO_INT, o_cast_to_int); |
SET_INSTR_ADDRESS(F_CAST_TO_STRING, o_cast_to_string); |
SET_INSTR_ADDRESS(F_RANGE, o_range2); |
SET_INSTR_ADDRESS(F_SSCANF, o_sscanf); |
#endif /* PIKE_USE_MACHINE_CODE && !PIKE_DEBUG */ |
tables_need_init=0; |
#ifdef INIT_INTERPRETER_STATE |
INIT_INTERPRETER_STATE(); |
#endif |
} |
} |
#endif /* HAVE_COMPUTED_GOTO || PIKE_USE_MACHINE_CODE */ |
} |
|
|
|
|
|
|
|
|
|
|
|
|
void lvalue_to_svalue_no_free(struct svalue *to,struct svalue *lval) |
{ |
#ifdef PIKE_SECURITY |
if(TYPEOF(*lval) <= MAX_COMPLEX) |
if(!CHECK_DATA_SECURITY(lval->u.array, SECURITY_BIT_INDEX)) |
Pike_error("Index permission denied.\n"); |
#endif |
switch(TYPEOF(*lval)) |
{ |
case T_ARRAY_LVALUE: |
{ |
INT32 e; |
struct array *a; |
TYPE_FIELD types = 0; |
ONERROR err; |
a=allocate_array(lval[1].u.array->size>>1); |
SET_ONERROR(err, do_free_array, a); |
for(e=0;e<a->size;e++) { |
lvalue_to_svalue_no_free(ITEM(a)+e, ITEM(lval[1].u.array)+(e<<1)); |
types |= 1 << TYPEOF(ITEM(a)[e]); |
} |
a->type_field = types; |
SET_SVAL(*to, T_ARRAY, 0, array, a); |
UNSET_ONERROR(err); |
break; |
} |
|
case T_SVALUE_PTR: |
dmalloc_touch_svalue(lval->u.lval); |
assign_svalue_no_free(to, lval->u.lval); |
break; |
|
case T_OBJECT: |
|
if (TYPEOF(lval[1]) == T_OBJ_INDEX) |
low_object_index_no_free (to, lval->u.object, lval[1].u.identifier); |
else |
object_index_no_free(to, lval->u.object, SUBTYPEOF(*lval), lval+1); |
break; |
|
case T_ARRAY: |
simple_array_index_no_free(to, lval->u.array, lval+1); |
break; |
|
case T_MAPPING: |
mapping_index_no_free(to, lval->u.mapping, lval+1); |
break; |
|
case T_MULTISET: |
if(multiset_member(lval->u.multiset,lval+1)) |
{ |
SET_SVAL(*to, T_INT, NUMBER_NUMBER, integer, 1); |
}else{ |
SET_SVAL(*to, T_INT, NUMBER_UNDEFINED, integer, 0); |
} |
break; |
|
default: |
if(SAFE_IS_ZERO(lval)) |
index_error(0,0,0,lval,lval+1,"Indexing the NULL value.\n"); |
else |
index_error(0,0,0,lval,lval+1,"Indexing a basic type.\n"); |
} |
} |
|
PMOD_EXPORT void assign_lvalue(struct svalue *lval,struct svalue *from) |
{ |
#ifdef PIKE_SECURITY |
if(TYPEOF(*lval) <= MAX_COMPLEX) |
if(!CHECK_DATA_SECURITY(lval->u.array, SECURITY_BIT_SET_INDEX)) |
Pike_error("Assign index permission denied.\n"); |
#endif |
|
switch(TYPEOF(*lval)) |
{ |
case T_ARRAY_LVALUE: |
{ |
INT32 e; |
if(TYPEOF(*from) != T_ARRAY) |
Pike_error("Trying to assign combined lvalue from non-array.\n"); |
|
if(from->u.array->size < (lval[1].u.array->size>>1)) |
Pike_error("Not enough values for multiple assign.\n"); |
|
if(from->u.array->size > (lval[1].u.array->size>>1)) |
Pike_error("Too many values for multiple assign.\n"); |
|
for(e=0;e<from->u.array->size;e++) |
assign_lvalue(lval[1].u.array->item+(e<<1),from->u.array->item+e); |
} |
break; |
|
case T_SVALUE_PTR: |
dmalloc_touch_svalue(from); |
dmalloc_touch_svalue(lval->u.lval); |
assign_svalue(lval->u.lval,from); |
break; |
|
case T_OBJECT: |
|
if (TYPEOF(lval[1]) == T_OBJ_INDEX) |
object_low_set_index (lval->u.object, lval[1].u.identifier, from); |
else |
object_set_index(lval->u.object, SUBTYPEOF(*lval), lval+1, from); |
break; |
|
case T_ARRAY: |
simple_set_index(lval->u.array, lval+1, from); |
break; |
|
case T_MAPPING: |
mapping_insert(lval->u.mapping, lval+1, from); |
break; |
|
case T_MULTISET: |
if(UNSAFE_IS_ZERO(from)) |
multiset_delete(lval->u.multiset, lval+1); |
else |
multiset_insert(lval->u.multiset, lval+1); |
break; |
|
default: |
if(SAFE_IS_ZERO(lval)) |
index_error(0,0,0,lval,lval+1,"Indexing the NULL value.\n"); |
else |
index_error(0,0,0,lval,lval+1,"Indexing a basic type.\n"); |
} |
} |
|
|
static void o_assign_lvalue(struct svalue *lvalue) |
{ |
assign_lvalue(lvalue, lvalue+2); |
} |
|
union anything *get_pointer_if_this_type(struct svalue *lval, TYPE_T t) |
{ |
#ifdef PIKE_SECURITY |
if(TYPEOF(*lval) <= MAX_COMPLEX) |
if(!CHECK_DATA_SECURITY(lval->u.array, SECURITY_BIT_SET_INDEX)) |
Pike_error("Assign index permission denied.\n"); |
#endif |
|
switch(TYPEOF(*lval)) |
{ |
case T_ARRAY_LVALUE: |
return 0; |
|
case T_SVALUE_PTR: |
dmalloc_touch_svalue(lval->u.lval); |
if(TYPEOF(*(lval->u.lval)) == t) return & ( lval->u.lval->u ); |
return 0; |
|
case T_OBJECT: |
|
return object_get_item_ptr(lval->u.object, SUBTYPEOF(*lval), lval+1, t); |
|
case T_ARRAY: |
return array_get_item_ptr(lval->u.array,lval+1,t); |
|
case T_MAPPING: |
return mapping_get_item_ptr(lval->u.mapping,lval+1,t); |
|
case T_MULTISET: return 0; |
|
default: |
if(SAFE_IS_ZERO(lval)) |
index_error(0,0,0,lval,lval+1,"Indexing the NULL value.\n"); |
else |
index_error(0,0,0,lval,lval+1,"Indexing a basic type.\n"); |
return 0; |
} |
} |
|
#ifdef PIKE_DEBUG |
|
INLINE void pike_trace(int level,char *fmt, ...) ATTRIBUTE((format (printf, 2, 3))); |
INLINE void pike_trace(int level,char *fmt, ...) |
{ |
if(Pike_interpreter.trace_level > level) |
{ |
va_list args; |
va_start(args,fmt); |
vsprintf(trace_buffer,fmt,args); |
va_end(args); |
write_to_stderr(trace_buffer,strlen(trace_buffer)); |
} |
} |
|
void my_describe_inherit_structure(struct program *p) |
{ |
struct inherit *in,*last=0; |
int e,i=0; |
last=p->inherits-1; |
|
fprintf(stderr,"PROGRAM[%d]: inherits=%d identifers_refs=%d ppid=%d\n", |
p->id, |
p->num_inherits, |
p->num_identifier_references, |
p->parent ? p->parent->id : -1); |
for(e=0;e<p->num_identifier_references;e++) |
{ |
in=INHERIT_FROM_INT(p,e); |
while(last < in) |
{ |
last++; |
fprintf(stderr, |
"[%ld]%*s parent{ offset=%d ident=%d id=%d } " |
"id{ level=%d } prog=%d\n", |
DO_NOT_WARN((long)(last - p->inherits)), |
last->inherit_level*2,"", |
last->parent_offset, |
last->parent_identifier, |
last->prog->parent ? last->prog->parent->id : -1, |
last->identifier_level, |
last->prog->id); |
i=0; |
} |
|
fprintf(stderr," %*s %d,%d: %s\n", |
in->inherit_level*2,"", |
e,i, |
ID_FROM_INT(p,e)->name->str); |
i++; |
} |
} |
|
#define TRACE(X) pike_trace X |
#else |
#define TRACE(X) |
#endif |
|
static struct inherit dummy_inherit |
#ifdef PIKE_DEBUG |
= {-4711, -4711, -4711, -4711, (size_t) -4711, -4711, NULL, NULL, NULL} |
#endif |
; |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
PMOD_EXPORT void find_external_context(struct external_variable_context *loc, |
int depth) |
{ |
struct program *p; |
|
TRACE((4, "-find_external_context(%d, inherit=%ld)\n", depth, |
DO_NOT_WARN((long)(loc->o->prog ? loc->inherit - loc->o->prog->inherits : 0)))); |
|
#ifdef PIKE_DEBUG |
if(!loc->o) |
Pike_fatal("No object\n"); |
#endif |
|
if (!(p = loc->o->prog)) { |
|
p = get_program_for_object_being_destructed(loc->o); |
if(!p) |
{ |
Pike_error("Cannot access parent of destructed object.\n"); |
} |
} |
|
#ifdef DEBUG_MALLOC |
if (loc->o->refs == 0x55555555) { |
fprintf(stderr, "The object %p has been zapped!\n", loc->o); |
describe(p); |
Pike_fatal("Object zapping detected.\n"); |
} |
if (p && p->refs == 0x55555555) { |
fprintf(stderr, "The program %p has been zapped!\n", p); |
describe(p); |
fprintf(stderr, "Which taken from the object %p\n", loc->o); |
describe(loc->o); |
Pike_fatal("Looks like the program %p has been zapped!\n", p); |
} |
#endif /* DEBUG_MALLOC */ |
|
while(--depth>=0) |
{ |
struct inherit *inh = loc->inherit; |
|
if (!p) |
Pike_error("Attempting to access parent of destructed object.\n"); |
|
#ifdef PIKE_DEBUG |
if(Pike_interpreter.trace_level>8) |
my_describe_inherit_structure(p); |
#endif |
|
TRACE((4,"- i->parent_offset=%d i->parent_identifier=%d\n", |
inh->parent_offset, |
inh->parent_identifier)); |
|
TRACE((4,"- o->parent_identifier=%d inherit->identifier_level=%d\n", |
(p->flags & PROGRAM_USES_PARENT) ? |
LOW_PARENT_INFO(loc->o, p)->parent_identifier : -1, |
inh->identifier_level)); |
|
switch(inh->parent_offset) |
{ |
default: |
{ |
|
int my_level = inh->inherit_level; |
#ifdef PIKE_DEBUG |
if(!my_level) |
Pike_fatal("Gahhh! inherit level zero in wrong place!\n"); |
#endif |
while(loc->inherit->inherit_level >= my_level) |
{ |
TRACE((5,"- inherit-- (%d >= %d)\n", |
loc->inherit->inherit_level, my_level)); |
loc->inherit--; |
TRACE((5, "- identifier_level: %d\n", |
loc->inherit->identifier_level)); |
} |
|
find_external_context(loc, inh->parent_offset); |
TRACE((5, |
"- inh->parent_identifier: %d\n" |
"- inh->identifier_level: %d\n" |
"- loc->parent_identifier: %d\n" |
"- loc->inherit->parent_offset: %d\n" |
"- loc->inherit->identifier_level: %d\n", |
inh->parent_identifier, |
inh->identifier_level, |
loc->parent_identifier, |
loc->inherit->parent_offset, |
loc->inherit->identifier_level)); |
|
loc->parent_identifier = |
inh->parent_identifier + |
loc->inherit->identifier_level; |
TRACE((5, "- parent_identifier: %d\n", loc->parent_identifier)); |
} |
break; |
|
case INHERIT_PARENT: |
TRACE((5,"- Following inherit->parent\n")); |
loc->parent_identifier=inh->parent_identifier; |
loc->o=inh->parent; |
#ifdef PIKE_DEBUG |
TRACE((5, "- parent_identifier: %d\n" |
"- o: %p\n" |
"- inh: %"PRINTPTRDIFFT"d\n", |
loc->parent_identifier, |
loc->o, |
loc->inherit - loc->o->prog->inherits)); |
if(Pike_interpreter.trace_level>5) { |
dump_program_tables(loc->o->prog, 4); |
} |
#endif |
break; |
|
case OBJECT_PARENT: |
TRACE((5,"- Following o->parent\n")); |
|
#ifdef PIKE_DEBUG |
|
* let me know in that case. /mast */ |
if (!(p->flags & PROGRAM_USES_PARENT)) |
Pike_fatal ("Attempting to access parent of object without parent pointer.\n"); |
#endif |
|
loc->parent_identifier=LOW_PARENT_INFO(loc->o,p)->parent_identifier; |
loc->o=LOW_PARENT_INFO(loc->o,p)->parent; |
#ifdef PIKE_DEBUG |
TRACE((5, "- parent_identifier: %d\n" |
"- o: %p\n", |
loc->parent_identifier, |
loc->o)); |
if(Pike_interpreter.trace_level>5) { |
dump_program_tables(loc->o->prog, 4); |
} |
#endif |
break; |
} |
|
#ifdef PIKE_DEBUG |
|
* pointer even if the object is destructed, at least. /mast */ |
if (!loc->o) Pike_fatal ("No parent object.\n"); |
#endif |
|
p = loc->o->prog; |
|
#ifdef DEBUG_MALLOC |
if (loc->o->refs == 0x55555555) { |
fprintf(stderr, "The object %p has been zapped!\n", loc->o); |
describe(p); |
Pike_fatal("Object zapping detected.\n"); |
} |
if (p && p->refs == 0x55555555) { |
fprintf(stderr, "The program %p has been zapped!\n", p); |
describe(p); |
fprintf(stderr, "Which taken from the object %p\n", loc->o); |
describe(loc->o); |
Pike_fatal("Looks like the program %p has been zapped!\n", p); |
} |
#endif /* DEBUG_MALLOC */ |
|
if (p) { |
#ifdef PIKE_DEBUG |
if(loc->parent_identifier < 0 || |
loc->parent_identifier > p->num_identifier_references) |
Pike_fatal("Identifier out of range, loc->parent_identifer=%d!\n", |
loc->parent_identifier); |
#endif |
loc->inherit=INHERIT_FROM_INT(p, loc->parent_identifier); |
TRACE((5, "- loc->inherit: %"PRINTPTRDIFFT"d\n", |
loc->inherit - loc->o->prog->inherits)); |
} |
else |
|
|
|
loc->inherit = &dummy_inherit; |
|
TRACE((5,"- Parent identifier = %d (%s), inherit # = %ld\n", |
loc->parent_identifier, |
p ? ID_FROM_INT(p, loc->parent_identifier)->name->str : "N/A", |
p ? DO_NOT_WARN((long)(loc->inherit - p->inherits)) : -1)); |
|
#ifdef DEBUG_MALLOC |
if (p && loc->inherit->storage_offset == 0x55555555) { |
fprintf(stderr, "The inherit %p has been zapped!\n", loc->inherit); |
debug_malloc_dump_references(loc->inherit,0,2,0); |
fprintf(stderr, "It was extracted from the program %p %d\n", p, loc->parent_identifier); |
describe(p); |
fprintf(stderr, "Which was in turn taken from the object %p\n", loc->o); |
describe(loc->o); |
Pike_fatal("Looks like the program %p has been zapped!\n", p); |
} |
#endif /* DEBUG_MALLOC */ |
} |
|
TRACE((4,"--find_external_context: parent_id=%d (%s)\n", |
loc->parent_identifier, |
p ? ID_FROM_INT(p,loc->parent_identifier)->name->str : "N/A" |
)); |
} |
|
#ifdef PIKE_DEBUG |
void print_return_value(void) |
{ |
if(Pike_interpreter.trace_level>3) |
{ |
char *s; |
dynamic_buffer save_buf; |
|
init_buf(&save_buf); |
safe_describe_svalue(Pike_sp-1,0,0); |
s=simple_free_buf(&save_buf); |
if((size_t)strlen(s) > (size_t)TRACE_LEN) |
{ |
s[TRACE_LEN]=0; |
s[TRACE_LEN-1]='.'; |
s[TRACE_LEN-2]='.'; |
s[TRACE_LEN-3]='.'; |
} |
fprintf(stderr,"- value: %s\n",s); |
free(s); |
} |
} |
#else |
#define print_return_value() |
#endif |
|
struct callback_list evaluator_callbacks; |
|
|
|
|
|
void reset_evaluator(void) |
{ |
Pike_fp=0; |
pop_n_elems(Pike_sp - Pike_interpreter.evaluator_stack); |
|
#ifdef PIKE_DEBUG |
if (Pike_interpreter.catch_ctx) |
Pike_fatal ("Catch context spillover.\n"); |
if (Pike_interpreter.catching_eval_jmpbuf) |
Pike_fatal ("Got an active catching_eval_jmpbuf.\n"); |
#endif |
} |
|
#ifdef PIKE_DEBUG |
|
#define BACKLOG 100 |
struct backlog |
{ |
PIKE_INSTR_T instruction; |
INT32 arg,arg2; |
INT32 program_id; |
PIKE_OPCODE_T *pc; |
#ifdef _REENTRANT |
struct thread_state *thread_state; |
#endif |
ptrdiff_t stack; |
ptrdiff_t mark_stack; |
}; |
|
struct backlog backlog[BACKLOG]; |
int backlogp=BACKLOG-1; |
|
static INLINE void low_debug_instr_prologue (PIKE_INSTR_T instr) |
{ |
if(Pike_interpreter.trace_level > 2) |
{ |
char *file = NULL, *f; |
struct pike_string *filep; |
INT_TYPE linep; |
|
filep = get_line(Pike_fp->pc,Pike_fp->context->prog,&linep); |
if (filep && !filep->size_shift) { |
file = filep->str; |
while((f=STRCHR(file,'/'))) |
file=f+1; |
} |
fprintf(stderr,"- %s:%4ld:%p(%"PRINTPTRDIFFT"d): " |
"%-25s %4"PRINTPTRDIFFT"d %4"PRINTPTRDIFFT"d\n", |
file ? file : "-",(long)linep, |
Pike_fp->pc, Pike_fp->pc - Pike_fp->context->prog->program, |
get_opcode_name(instr), |
Pike_sp-Pike_interpreter.evaluator_stack, |
Pike_mark_sp-Pike_interpreter.mark_stack); |
free_string(filep); |
} |
|
#ifdef HAVE_COMPUTED_GOTO |
if (instr) |
ADD_RUNNED(instr); |
else |
Pike_fatal("NULL Instruction!\n"); |
#else /* !HAVE_COMPUTED_GOTO */ |
if(instr + F_OFFSET < F_MAX_OPCODE) |
ADD_RUNNED(instr); |
#endif /* HAVE_COMPUTED_GOTO */ |
|
if(d_flag ) |
{ |
backlogp++; |
if(backlogp >= BACKLOG) backlogp=0; |
|
backlog[backlogp].program_id = Pike_fp->context->prog->id; |
backlog[backlogp].instruction=instr; |
backlog[backlogp].pc = Pike_fp->pc; |
backlog[backlogp].stack = Pike_sp - Pike_interpreter.evaluator_stack; |
backlog[backlogp].mark_stack = Pike_mark_sp - Pike_interpreter.mark_stack; |
#ifdef _REENTRANT |
backlog[backlogp].thread_state=Pike_interpreter.thread_state; |
#endif |
|
#ifdef _REENTRANT |
CHECK_INTERPRETER_LOCK(); |
if(d_flag>1) DEBUG_CHECK_THREAD(); |
#endif |
|
INVALIDATE_SVAL(Pike_sp[0]); |
INVALIDATE_SVAL(Pike_sp[1]); |
INVALIDATE_SVAL(Pike_sp[2]); |
INVALIDATE_SVAL(Pike_sp[3]); |
|
if(Pike_sp<Pike_interpreter.evaluator_stack || |
Pike_mark_sp < Pike_interpreter.mark_stack || Pike_fp->locals>Pike_sp) |
Pike_fatal("Stack error (generic) sp=%p/%p mark_sp=%p/%p locals=%p.\n", |
Pike_sp, |
Pike_interpreter.evaluator_stack, |
Pike_mark_sp, |
Pike_interpreter.mark_stack, |
Pike_fp->locals); |
|
if(Pike_mark_sp > Pike_interpreter.mark_stack+Pike_stack_size) |
Pike_fatal("Mark Stack error (overflow).\n"); |
|
|
if(Pike_mark_sp < Pike_interpreter.mark_stack) |
Pike_fatal("Mark Stack error (underflow).\n"); |
|
if(Pike_sp > Pike_interpreter.evaluator_stack+Pike_stack_size) |
Pike_fatal("stack error (overflow).\n"); |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if(Pike_interpreter.recoveries && |
(Pike_sp-Pike_interpreter.evaluator_stack < |
Pike_interpreter.recoveries->stack_pointer)) |
Pike_fatal("Stack error (underflow).\n"); |
|
if(Pike_mark_sp > Pike_interpreter.mark_stack && |
Pike_mark_sp[-1] > Pike_sp) |
Pike_fatal("Stack error (underflow?)\n"); |
|
if(d_flag > 9) do_debug(); |
|
debug_malloc_touch(Pike_fp->current_object); |
switch(d_flag) |
{ |
default: |
case 3: |
check_object(Pike_fp->current_object); |
|
|
case 2: |
check_object_context(Pike_fp->current_object, |
Pike_fp->context->prog, |
Pike_fp->current_object->storage+ |
Pike_fp->context->storage_offset); |
case 1: |
case 0: |
break; |
} |
} |
} |
|
#define DEBUG_LOG_ARG(ARG) \ |
(backlog[backlogp].arg = (ARG), \ |
(Pike_interpreter.trace_level>3 ? \ |
sprintf(trace_buffer, "- Arg = %ld\n", \ |
(long) backlog[backlogp].arg), \ |
write_to_stderr(trace_buffer,strlen(trace_buffer)) : 0)) |
|
#define DEBUG_LOG_ARG2(ARG2) \ |
(backlog[backlogp].arg2 = (ARG2), \ |
(Pike_interpreter.trace_level>3 ? \ |
sprintf(trace_buffer, "- Arg2 = %ld\n", \ |
(long) backlog[backlogp].arg2), \ |
write_to_stderr(trace_buffer,strlen(trace_buffer)) : 0)) |
|
void dump_backlog(void) |
{ |
#ifdef _REENTRANT |
struct thread_state *thread=0; |
#endif |
|
int e; |
if(!d_flag || backlogp<0 || backlogp>=BACKLOG) |
return; |
|
e=backlogp; |
do |
{ |
struct program *p; |
e++; |
if(e>=BACKLOG) e=0; |
|
p = id_to_program (backlog[e].program_id); |
if (p) |
{ |
struct pike_string *file; |
INT_TYPE line; |
|
#ifdef _REENTRANT |
if(thread != backlog[e].thread_state) |
{ |
fprintf(stderr,"[Thread swap, Pike_interpreter.thread_state=%p]\n",backlog[e].thread_state); |
thread = backlog[e].thread_state; |
} |
#endif |
|
file = get_line(backlog[e].pc,p, &line); |
#ifdef HAVE_COMPUTED_GOTO |
fprintf(stderr,"%s:%ld:(%"PRINTPTRDIFFT"d): %s", |
file->str, |
(long)line, |
backlog[e].pc - p->program, |
get_opcode_name(backlog[e].instruction)); |
#else /* !HAVE_COMPUTED_GOTO */ |
if(backlog[e].instruction+F_OFFSET > F_MAX_OPCODE) |
{ |
fprintf(stderr,"%s:%ld:(%"PRINTPTRDIFFT"d): ILLEGAL INSTRUCTION %d\n", |
file->str, |
(long)line, |
backlog[e].pc - p->program, |
backlog[e].instruction + F_OFFSET); |
free_string(file); |
continue; |
} |
|
fprintf(stderr,"%s:%ld:(%"PRINTPTRDIFFT"d): %s", |
file->str, |
(long)line, |
backlog[e].pc - p->program, |
low_get_f_name(backlog[e].instruction + F_OFFSET, p)); |
if(instrs[backlog[e].instruction].flags & I_HASARG2) |
{ |
fprintf(stderr,"(%ld,%ld)", |
(long)backlog[e].arg, |
(long)backlog[e].arg2); |
} |
else if(instrs[backlog[e].instruction].flags & I_POINTER) |
{ |
fprintf(stderr,"(%+ld)", (long)backlog[e].arg); |
} |
else if(instrs[backlog[e].instruction].flags & I_HASARG) |
{ |
fprintf(stderr,"(%ld)", (long)backlog[e].arg); |
} |
fprintf(stderr," %ld, %ld\n", |
DO_NOT_WARN((long)backlog[e].stack), |
DO_NOT_WARN((long)backlog[e].mark_stack)); |
#endif /* HAVE_COMPUTED_GOTO */ |
free_string(file); |
} |
}while(e!=backlogp); |
} |
|
#else /* PIKE_DEBUG */ |
|
#define DEBUG_LOG_ARG(arg) 0 |
#define DEBUG_LOG_ARG2(arg2) 0 |
|
#endif /* !PIKE_DEBUG */ |
|
|
#define POP_CATCH_CONTEXT do { \ |
struct catch_context *cc = Pike_interpreter.catch_ctx; \ |
DO_IF_DEBUG ( \ |
TRACE((3,"- Popping catch context %p ==> %p\n", \ |
cc, cc ? cc->prev : NULL)); \ |
if (!Pike_interpreter.catching_eval_jmpbuf) \ |
Pike_fatal ("Not in catching eval.\n"); \ |
if (!cc) \ |
Pike_fatal ("Catch context dropoff.\n"); \ |
if (cc->frame != Pike_fp) \ |
Pike_fatal ("Catch context doesn't belong to this frame.\n"); \ |
if (Pike_mark_sp != cc->recovery.mark_sp + Pike_interpreter.mark_stack) \ |
Pike_fatal ("Mark sp diff in catch context pop.\n"); \ |
); \ |
debug_malloc_touch (cc); \ |
UNSETJMP (cc->recovery); \ |
Pike_fp->expendible = cc->save_expendible; \ |
Pike_interpreter.catch_ctx = cc->prev; \ |
really_free_catch_context (cc); \ |
} while (0) |
|
static struct catch_context *free_catch_context; |
static int num_catch_ctx, num_free_catch_ctx; |
|
PMOD_EXPORT void really_free_catch_context( struct catch_context *data ) |
{ |
if( num_free_catch_ctx > 100 && free_catch_context ) |
{ |
num_catch_ctx--; |
free( data ); |
} |
else |
{ |
data->prev = free_catch_context; |
|
num_free_catch_ctx++; |
PIKE_MEM_NA(*data); |
PIKE_MEM_RW(data->prev); |
free_catch_context = data; |
} |
} |
|
struct catch_context *alloc_catch_context(void) |
{ |
struct catch_context *res; |
if( free_catch_context ) |
{ |
num_free_catch_ctx--; |
res = free_catch_context; |
PIKE_MEM_RW(res->prev); |
free_catch_context = res->prev; |
PIKE_MEM_WO(*res); |
} |
else |
{ |
num_catch_ctx++; |
res = xalloc( sizeof( struct catch_context ) ); |
} |
return res; |
} |
|
void count_memory_in_catch_contexts(size_t *num, size_t *size ) |
{ |
*num = (num_catch_ctx-num_free_catch_ctx); |
*size = num_catch_ctx * (sizeof(struct catch_context)+8); |
} |
|
static void free_all_catch_context_blocks(void) |
{ |
struct catch_context *x = free_catch_context, *n; |
while( x ) |
{ |
PIKE_MEM_RW(x->prev); |
n = x->prev; |
free( x ); |
x = n; |
} |
free_catch_context = NULL; |
} |
|
static int catching_eval_instruction (PIKE_OPCODE_T *pc); |
|
|
#ifdef PIKE_USE_MACHINE_CODE |
#ifdef OPCODE_INLINE_RETURN |
|
* |
* Typical F_CATCH use: |
* |
* F_CATCH |
* F_PTR continue_label |
* |
* ENTRY |
* |
* catch body |
* |
* F_EXIT_CATCH |
* |
* F_BRANCH |
* F_PTR continue_label |
* |
* ENTRY |
* |
* continue_label: |
* |
* rest of code. |
*/ |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
PIKE_OPCODE_T *inter_return_opcode_F_CATCH(PIKE_OPCODE_T *addr) |
{ |
#ifdef PIKE_DEBUG |
if (d_flag || Pike_interpreter.trace_level > 2) { |
low_debug_instr_prologue (F_CATCH - F_OFFSET); |
if (Pike_interpreter.trace_level>3) { |
sprintf(trace_buffer, "- Addr = %p\n", addr); |
write_to_stderr(trace_buffer,strlen(trace_buffer)); |
} |
} |
#endif |
{ |
struct catch_context *new_catch_ctx = alloc_catch_context(); |
#ifdef PIKE_DEBUG |
new_catch_ctx->frame = Pike_fp; |
init_recovery (&new_catch_ctx->recovery, 0, 0, PERR_LOCATION()); |
#else |
init_recovery (&new_catch_ctx->recovery, 0); |
#endif |
new_catch_ctx->save_expendible = Pike_fp->expendible; |
new_catch_ctx->continue_reladdr = ((INT32 *)addr)[0] |
|
- ENTRY_PROLOGUE_SIZE; |
|
new_catch_ctx->next_addr = addr; |
new_catch_ctx->prev = Pike_interpreter.catch_ctx; |
Pike_interpreter.catch_ctx = new_catch_ctx; |
DO_IF_DEBUG({ |
TRACE((3,"- Pushed catch context %p\n", new_catch_ctx)); |
}); |
} |
|
Pike_fp->expendible = Pike_fp->locals + Pike_fp->num_locals; |
|
|
|
addr = (PIKE_OPCODE_T *) ((INT32 *) addr + 1); |
|
if (Pike_interpreter.catching_eval_jmpbuf) { |
|
|
debug_malloc_touch_named (Pike_interpreter.catch_ctx, "(1)"); |
|
addr += ENTRY_PROLOGUE_SIZE; |
DO_IF_DEBUG({ |
TRACE((3,"- In active catch; continuing at %p\n", addr)); |
}); |
return addr; |
} |
else { |
debug_malloc_touch_named (Pike_interpreter.catch_ctx, "(2)"); |
|
while (1) { |
|
|
|
|
|
int res; |
|
DO_IF_DEBUG({ |
TRACE((3,"- Activating catch; calling %p in context %p\n", |
addr, Pike_interpreter.catch_ctx)); |
}); |
|
res = catching_eval_instruction (addr); |
|
DO_IF_DEBUG({ |
TRACE((3,"- catching_eval_instruction(%p) returned %d\n", |
addr, res)); |
}); |
|
if (res != -3) { |
|
|
DO_IF_DEBUG ({ |
TRACE((3,"- Returning from catch.\n")); |
if (res != -1) Pike_fatal ("Unexpected return value from " |
"catching_eval_instruction: %d\n", res); |
}); |
break; |
} |
|
else { |
|
struct catch_context *cc = Pike_interpreter.catch_ctx; |
|
DO_IF_DEBUG ({ |
TRACE((3,"- Caught exception. catch context: %p\n", cc)); |
if (!cc) Pike_fatal ("Catch context dropoff.\n"); |
if (cc->frame != Pike_fp) |
Pike_fatal ("Catch context doesn't belong to this frame.\n"); |
}); |
|
debug_malloc_touch_named (cc, "(3)"); |
UNSETJMP (cc->recovery); |
Pike_fp->expendible = cc->save_expendible; |
move_svalue (Pike_sp++, &throw_value); |
mark_free_svalue (&throw_value); |
low_destruct_objects_to_destruct(); |
|
if (cc->continue_reladdr < 0) |
FAST_CHECK_THREADS_ON_BRANCH(); |
addr = cc->next_addr + cc->continue_reladdr; |
|
DO_IF_DEBUG({ |
TRACE((3,"- Popping catch context %p ==> %p\n", |
cc, cc->prev)); |
if (!addr) Pike_fatal ("Unexpected null continue addr.\n"); |
}); |
|
Pike_interpreter.catch_ctx = cc->prev; |
really_free_catch_context (cc); |
} |
} |
|
return (PIKE_OPCODE_T *)(ptrdiff_t)-1; |
} |
} |
|
void *do_inter_return_label = (void*)(ptrdiff_t)-1; |
#else |
|
|
void *do_inter_return_label = NULL; |
void *dummy_label = NULL; |
#endif |
|
#ifndef CALL_MACHINE_CODE |
#define CALL_MACHINE_CODE(pc) \ |
do { \ |
/* The test is needed to get the labels to work... */ \ |
if (pc) { \ |
/* No extra setup needed! \ |
*/ \ |
return ((int (*)(void))(pc))(); \ |
} \ |
} while(0) |
#endif /* !CALL_MACHINE_CODE */ |
|
#ifndef EXIT_MACHINE_CODE |
#define EXIT_MACHINE_CODE() |
#endif |
|
|
|
|
void call_check_threads_etc() |
{ |
FAST_CHECK_THREADS_ON_CALL(); |
} |
|
#if defined(OPCODE_INLINE_BRANCH) || defined(INS_F_JUMP) || \ |
defined(INS_F_JUMP_WITH_ARG) || defined(INS_F_JUMP_WITH_TWO_ARGS) |
|
* to ensure thread switching. */ |
void branch_check_threads_etc() |
{ |
FAST_CHECK_THREADS_ON_BRANCH(); |
} |
#endif |
|
#ifdef PIKE_DEBUG |
|
static void debug_instr_prologue (PIKE_INSTR_T instr) |
{ |
low_debug_instr_prologue (instr); |
} |
|
#define DEBUG_PROLOGUE(OPCODE, EXTRA) do { \ |
if (d_flag || Pike_interpreter.trace_level > 2) { \ |
debug_instr_prologue ((OPCODE) - F_OFFSET); \ |
EXTRA; \ |
} \ |
} while (0) |
|
|
|
void simple_debug_instr_prologue_0 (PIKE_INSTR_T instr) |
{ |
if (d_flag || Pike_interpreter.trace_level > 2) |
low_debug_instr_prologue (instr); |
} |
void simple_debug_instr_prologue_1 (PIKE_INSTR_T instr, INT32 arg) |
{ |
if (d_flag || Pike_interpreter.trace_level > 2) { |
low_debug_instr_prologue (instr); |
DEBUG_LOG_ARG (arg); |
} |
} |
void simple_debug_instr_prologue_2 (PIKE_INSTR_T instr, INT32 arg1, INT32 arg2) |
{ |
if (d_flag || Pike_interpreter.trace_level > 2) { |
low_debug_instr_prologue (instr); |
DEBUG_LOG_ARG (arg1); |
DEBUG_LOG_ARG2 (arg2); |
} |
} |
|
#endif /* !PIKE_DEBUG */ |
|
#endif /* PIKE_USE_MACHINE_CODE */ |
|
|
#ifdef PIKE_DEBUG |
#define REAL_PIKE_DEBUG |
#define DO_IF_REAL_DEBUG(X) X |
#define DO_IF_NOT_REAL_DEBUG(X) |
#else |
#define DO_IF_REAL_DEBUG(X) |
#define DO_IF_NOT_REAL_DEBUG(X) X |
#endif |
|
#ifdef PIKE_SMALL_EVAL_INSTRUCTION |
#undef PROG_COUNTER |
#define PROG_COUNTER Pike_fp->pc+1 |
#endif /* PIKE_SMALL_EVAL_INSTRUCTION */ |
|
#if defined(PIKE_USE_MACHINE_CODE) || defined(PIKE_SMALL_EVAL_INSTRUCTION) |
|
#ifndef DEF_PROG_COUNTER |
#define DEF_PROG_COUNTER |
#endif /* !DEF_PROG_COUNTER */ |
|
#ifndef DEBUG_PROLOGUE |
#define DEBUG_PROLOGUE(OPCODE, EXTRA) do {} while (0) |
#endif |
|
#define OPCODE0(O,N,F,C) \ |
void PIKE_CONCAT(opcode_,O)(void) { \ |
DEF_PROG_COUNTER; \ |
DEBUG_PROLOGUE (O, ;); \ |
C } |
|
#define OPCODE1(O,N,F,C) \ |
void PIKE_CONCAT(opcode_,O)(INT32 arg1) {\ |
DEF_PROG_COUNTER; \ |
DEBUG_PROLOGUE (O, DEBUG_LOG_ARG (arg1)); \ |
C } |
|
#define OPCODE2(O,N,F,C) \ |
void PIKE_CONCAT(opcode_,O)(INT32 arg1,INT32 arg2) { \ |
DEF_PROG_COUNTER; \ |
DEBUG_PROLOGUE (O, DEBUG_LOG_ARG (arg1); DEBUG_LOG_ARG2 (arg2)); \ |
C } |
|
#if defined(OPCODE_RETURN_JUMPADDR) || defined(PIKE_SMALL_EVAL_INSTRUCTION) |
|
#define OPCODE0_JUMP(O,N,F,C) \ |
void *PIKE_CONCAT(jump_opcode_,O)(void) { \ |
void *jumpaddr DO_IF_DEBUG(= NULL); \ |
DEF_PROG_COUNTER; \ |
DEBUG_PROLOGUE (O, ;); \ |
C; \ |
JUMP_DONE; \ |
} |
|
#define OPCODE1_JUMP(O,N,F,C) \ |
void *PIKE_CONCAT(jump_opcode_,O)(INT32 arg1) { \ |
void *jumpaddr DO_IF_DEBUG(= NULL); \ |
DEF_PROG_COUNTER; \ |
DEBUG_PROLOGUE (O, DEBUG_LOG_ARG (arg1)); \ |
C; \ |
JUMP_DONE; \ |
} |
|
#define OPCODE2_JUMP(O,N,F,C) \ |
void *PIKE_CONCAT(jump_opcode_,O)(INT32 arg1, INT32 arg2) { \ |
void *jumpaddr DO_IF_DEBUG(= NULL); \ |
DEF_PROG_COUNTER; \ |
DEBUG_PROLOGUE (O, DEBUG_LOG_ARG (arg1); DEBUG_LOG_ARG2 (arg2)); \ |
C; \ |
JUMP_DONE; \ |
} |
|
#define SET_PROG_COUNTER(X) (jumpaddr = (X)) |
|
#ifdef PIKE_DEBUG |
#define JUMP_DONE do { \ |
if (!jumpaddr) \ |
Pike_fatal ("Instruction didn't set jump address.\n"); \ |
return jumpaddr; \ |
} while (0) |
#else |
#define JUMP_DONE return jumpaddr |
#endif |
|
#else /* !OPCODE_RETURN_JUMPADDR && !PIKE_SMALL_EVAL_INSTRUCTION */ |
#define OPCODE0_JUMP OPCODE0 |
#define OPCODE1_JUMP OPCODE1 |
#define OPCODE2_JUMP OPCODE2 |
#define JUMP_DONE DONE |
#endif /* OPCODE_RETURN_JUMPADDR || PIKE_SMALL_EVAL_INSTRUCTION */ |
|
#if defined(OPCODE_INLINE_BRANCH) || defined(PIKE_SMALL_EVAL_INSTRUCTION) |
#define TEST_OPCODE0(O,N,F,C) \ |
ptrdiff_t PIKE_CONCAT(test_opcode_,O)(void) { \ |
ptrdiff_t branch_taken = 0; \ |
DEF_PROG_COUNTER; \ |
DEBUG_PROLOGUE (O, ;); \ |
C; \ |
return branch_taken; \ |
} |
|
#define TEST_OPCODE1(O,N,F,C) \ |
ptrdiff_t PIKE_CONCAT(test_opcode_,O)(INT32 arg1) {\ |
ptrdiff_t branch_taken = 0; \ |
DEF_PROG_COUNTER; \ |
DEBUG_PROLOGUE (O, DEBUG_LOG_ARG (arg1)); \ |
C; \ |
return branch_taken; \ |
} |
|
|
#define TEST_OPCODE2(O,N,F,C) \ |
ptrdiff_t PIKE_CONCAT(test_opcode_,O)(INT32 arg1, INT32 arg2) { \ |
ptrdiff_t branch_taken = 0; \ |
DEF_PROG_COUNTER; \ |
DEBUG_PROLOGUE (O, DEBUG_LOG_ARG (arg1); DEBUG_LOG_ARG2 (arg2)); \ |
C; \ |
return branch_taken; \ |
} |
|
#define DO_BRANCH() (branch_taken = -1) |
#define DONT_BRANCH() (branch_taken = 0) |
#else /* !OPCODE_INLINE_BRANCH && !PIKE_SMALL_EVAL_INSTRUCTION */ |
#define TEST_OPCODE0(O,N,F,C) OPCODE0_PTRJUMP(O,N,F,C) |
#define TEST_OPCODE1(O,N,F,C) OPCODE1_PTRJUMP(O,N,F,C) |
#define TEST_OPCODE2(O,N,F,C) OPCODE2_PTRJUMP(O,N,F,C) |
#endif /* OPCODE_INLINE_BRANCH || PIKE_SMALL_EVAL_INSTRUCTION */ |
|
#define OPCODE0_TAIL(O,N,F,C) OPCODE0(O,N,F,C) |
#define OPCODE1_TAIL(O,N,F,C) OPCODE1(O,N,F,C) |
#define OPCODE2_TAIL(O,N,F,C) OPCODE2(O,N,F,C) |
|
#define OPCODE0_PTRJUMP(O,N,F,C) OPCODE0_JUMP(O,N,F,C) |
#define OPCODE1_PTRJUMP(O,N,F,C) OPCODE1_JUMP(O,N,F,C) |
#define OPCODE2_PTRJUMP(O,N,F,C) OPCODE2_JUMP(O,N,F,C) |
#define OPCODE0_TAILPTRJUMP(O,N,F,C) OPCODE0_PTRJUMP(O,N,F,C) |
#define OPCODE1_TAILPTRJUMP(O,N,F,C) OPCODE1_PTRJUMP(O,N,F,C) |
#define OPCODE2_TAILPTRJUMP(O,N,F,C) OPCODE2_PTRJUMP(O,N,F,C) |
|
#define OPCODE0_RETURN(O,N,F,C) OPCODE0_JUMP(O,N,F | I_RETURN,C) |
#define OPCODE1_RETURN(O,N,F,C) OPCODE1_JUMP(O,N,F | I_RETURN,C) |
#define OPCODE2_RETURN(O,N,F,C) OPCODE2_JUMP(O,N,F | I_RETURN,C) |
#define OPCODE0_TAILRETURN(O,N,F,C) OPCODE0_RETURN(O,N,F,C) |
#define OPCODE1_TAILRETURN(O,N,F,C) OPCODE1_RETURN(O,N,F,C) |
#define OPCODE2_TAILRETURN(O,N,F,C) OPCODE2_RETURN(O,N,F,C) |
|
|
|
|
#define OPCODE0_BRANCH(O,N,F,C) TEST_OPCODE0(O,N,F,C) |
#define OPCODE1_BRANCH(O,N,F,C) TEST_OPCODE1(O,N,F,C) |
#define OPCODE2_BRANCH(O,N,F,C) TEST_OPCODE2(O,N,F,C) |
#define OPCODE0_TAILBRANCH(O,N,F,C) TEST_OPCODE0(O,N,F,C) |
#define OPCODE1_TAILBRANCH(O,N,F,C) TEST_OPCODE1(O,N,F,C) |
#define OPCODE2_TAILBRANCH(O,N,F,C) TEST_OPCODE2(O,N,F,C) |
|
#define OPCODE0_ALIAS(O,N,F,C) |
#define OPCODE1_ALIAS(O,N,F,C) |
#define OPCODE2_ALIAS(O,N,F,C) |
|
#undef HAVE_COMPUTED_GOTO |
|
#ifdef GLOBAL_DEF_PROG_COUNTER |
GLOBAL_DEF_PROG_COUNTER; |
#endif |
|
#ifndef SET_PROG_COUNTER |
#define SET_PROG_COUNTER(X) (PROG_COUNTER=(X)) |
#endif /* SET_PROG_COUNTER */ |
|
#undef DONE |
#undef FETCH |
#undef INTER_RETURN |
|
#define DONE return |
#define FETCH |
#define INTER_RETURN {SET_PROG_COUNTER(do_inter_return_label);JUMP_DONE;} |
|
#if defined(PIKE_USE_MACHINE_CODE) && defined(_M_IX86) |
|
#pragma optimize("y", off) |
#endif |
|
#include "interpret_functions_fixed.h" |
|
#if defined(PIKE_USE_MACHINE_CODE) && defined(_M_IX86) |
|
#pragma optimize("", on) |
#endif |
|
#ifdef PIKE_SMALL_EVAL_INSTRUCTION |
#undef SET_PROG_COUNTER |
#undef PROG_COUNTER |
#define PROG_COUNTER pc |
#endif |
|
#endif /* PIKE_USE_MACHINE_CODE || PIKE_SMALL_EVAL_INSTRUCTION */ |
|
#ifdef PIKE_USE_MACHINE_CODE |
|
#ifdef PIKE_DEBUG |
|
static int eval_instruction_low(PIKE_OPCODE_T *pc); |
#endif /* PIKE_DEBUG */ |
|
static int eval_instruction(PIKE_OPCODE_T *pc) |
#ifdef PIKE_DEBUG |
{ |
int x; |
if (Pike_interpreter.trace_level > 5 && pc) { |
int i; |
fprintf(stderr, "Calling code at %p:\n", pc); |
#ifdef PIKE_OPCODE_ALIGN |
if (((INT32)pc) % PIKE_OPCODE_ALIGN) { |
Pike_fatal("Odd offset!\n"); |
} |
#endif /* PIKE_OPCODE_ALIGN */ |
#ifdef DISASSEMBLE_CODE |
DISASSEMBLE_CODE(pc, 16*4); |
#else /* !DISASSEMBLE_CODE */ |
for (i=0; i < 16; i+=4) { |
fprintf(stderr, |
" 0x%08x 0x%08x 0x%08x 0x%08x\n", |
((int *)pc)[i], |
((int *)pc)[i+1], |
((int *)pc)[i+2], |
((int *)pc)[i+3]); |
} |
#endif /* DISASSEMBLE_CODE */ |
} |
x = eval_instruction_low(pc); |
pike_trace(3, "- eval_instruction(%p) ==> %d\n", pc, x); |
return x; |
} |
|
static int eval_instruction_low(PIKE_OPCODE_T *pc) |
#endif /* PIKE_DEBUG */ |
{ |
#ifndef OPCODE_INLINE_RETURN |
if(pc == NULL) { |
if(do_inter_return_label != NULL) |
Pike_fatal("eval_instruction called with NULL (twice).\n"); |
|
#ifdef __GNUC__ |
do_inter_return_label = && inter_return_label; |
#elif defined (_M_IX86) |
|
_asm |
{ |
lea eax,inter_return_label |
mov do_inter_return_label,eax |
} |
#else |
#error Machine code not supported with this compiler. |
#endif |
|
#if 0 |
|
* |
* This can happen on systems with delay slots if the labels aren't |
* used explicitly. |
*/ |
if (do_inter_return_label == do_escape_catch_label) { |
Pike_fatal("Inter return and escape catch labels are equal: %p\n", |
do_inter_return_label); |
} |
#endif |
|
|
if(!dummy_label) |
return 0; |
} |
|
|
|
|
else { |
#endif /* !OPCODE_INLINE_RETURN */ |
CALL_MACHINE_CODE(pc); |
|
#ifndef OPCODE_INLINE_RETURN |
|
* prevent gcc from optimizing the labels below too much |
*/ |
|
#ifdef PIKE_DEBUG |
fprintf(stderr,"We have reached the end of the world!\n"); |
#endif |
} |
|
#ifdef __GNUC__ |
goto *dummy_label; |
#endif |
|
inter_return_label: |
#endif /*!OPCODE_INLINE_RETURUN */ |
#ifdef PIKE_DEBUG |
pike_trace(3, "- Inter return\n"); |
#endif |
EXIT_MACHINE_CODE(); |
return -1; |
} |
|
#else /* PIKE_USE_MACHINE_CODE */ |
|
|
#ifndef SET_PROG_COUNTER |
#define SET_PROG_COUNTER(X) (PROG_COUNTER=(X)) |
#endif /* SET_PROG_COUNTER */ |
|
#ifdef HAVE_COMPUTED_GOTO |
int lookup_sort_fun(const void *a, const void *b) |
{ |
return (int)(((ptrdiff_t)((struct op_2_f *)a)->opcode) - |
((ptrdiff_t)((struct op_2_f *)b)->opcode)); |
} |
#endif /* HAVE_COMPUTED_GOTO */ |
|
|
|
|
#if defined(PIKE_DEBUG) && !defined(HAVE_COMPUTED_GOTO) |
#define eval_instruction eval_instruction_with_debug |
#include "interpreter_debug.h" |
|
#undef eval_instruction |
#define eval_instruction eval_instruction_without_debug |
|
#undef PIKE_DEBUG |
#undef NDEBUG |
#undef DO_IF_DEBUG |
#define DO_IF_DEBUG(X) |
#define print_return_value() |
#include "interpreter.h" |
|
#define PIKE_DEBUG |
#define NDEBUG |
#undef DO_IF_DEBUG |
#define DO_IF_DEBUG(X) X |
#undef print_return_value |
|
#undef eval_instruction |
|
static INLINE int eval_instruction(unsigned char *pc) |
{ |
if(d_flag || Pike_interpreter.trace_level>2) |
return eval_instruction_with_debug(pc); |
else |
return eval_instruction_without_debug(pc); |
} |
|
|
#else /* !PIKE_DEBUG || HAVE_COMPUTED_GOTO */ |
#include "interpreter.h" |
#endif |
|
|
#endif /* PIKE_USE_MACHINE_CODE */ |
|
#undef REAL_PIKE_DEBUG |
#undef DO_IF_REAL_DEBUG |
#undef DO_IF_NOT_REAL_DEBUG |
|
|
static void do_trace_call(INT32 args, dynamic_buffer *old_buf) |
{ |
struct pike_string *filep = NULL; |
char *file, *s; |
INT_TYPE linep; |
INT32 e; |
ptrdiff_t len = 0; |
|
my_strcat("("); |
for(e=0;e<args;e++) |
{ |
if(e) my_strcat(","); |
safe_describe_svalue(Pike_sp-args+e,0,0); |
} |
my_strcat(")"); |
|
s=simple_free_buf(old_buf); |
if((size_t)strlen(s) > (size_t)TRACE_LEN) |
{ |
s[TRACE_LEN]=0; |
s[TRACE_LEN-1]='.'; |
s[TRACE_LEN-2]='.'; |
s[TRACE_LEN-3]='.'; |
} |
|
if(Pike_fp && Pike_fp->pc) |
{ |
char *f; |
filep = get_line(Pike_fp->pc,Pike_fp->context->prog,&linep); |
if (filep->size_shift) |
file = "..."; |
else { |
file = filep->str; |
while((f = STRCHR(file, '/')) |
#ifdef __NT__ |
|| (f = STRCHR(file, '\\')) |
#endif /* __NT__ */ |
) |
file=f+1; |
len = filep->len - (file - filep->str); |
} |
}else{ |
linep=0; |
file="-"; |
} |
|
if (len < 30) |
{ |
char buf[40]; |
if (linep) |
SNPRINTF(buf, sizeof (buf), "%s:%ld:", file, (long)linep); |
else |
SNPRINTF(buf, sizeof (buf), "%s:", file); |
fprintf(stderr, "- %-20s %s\n",buf,s); |
} else if (linep) { |
fprintf(stderr, "- %s:%ld: %s\n", file, (long)linep, s); |
} else { |
fprintf(stderr, "- %s: %s\n", file, s); |
} |
|
if (filep) { |
free_string(filep); |
} |
free(s); |
} |
|
static void do_trace_func_return (int got_retval, struct object *o, int fun) |
{ |
dynamic_buffer save_buf; |
init_buf (&save_buf); |
if (o) { |
if (o->prog) { |
struct identifier *id = ID_FROM_INT (o->prog, fun); |
char buf[50]; |
sprintf(buf, "%lx->", DO_NOT_WARN((long) PTR_TO_INT (o))); |
my_strcat(buf); |
if (id->name->size_shift) |
my_strcat ("[widestring function name]"); |
else |
my_strcat(id->name->str); |
my_strcat ("() "); |
} |
else |
my_strcat ("function in destructed object "); |
} |
do_trace_return (got_retval, &save_buf); |
} |
|
static void do_trace_return (int got_retval, dynamic_buffer *old_buf) |
{ |
struct pike_string *filep = NULL; |
char *file, *s; |
INT_TYPE linep; |
|
if (got_retval) { |
my_strcat ("returns: "); |
safe_describe_svalue(Pike_sp-1,0,0); |
} |
else |
my_strcat ("returns with no value"); |
|
s=simple_free_buf(old_buf); |
if((size_t)strlen(s) > (size_t)TRACE_LEN) |
{ |
s[TRACE_LEN]=0; |
s[TRACE_LEN-1]='.'; |
s[TRACE_LEN-2]='.'; |
s[TRACE_LEN-3]='.'; |
} |
|
if(Pike_fp && Pike_fp->pc) |
{ |
char *f; |
filep = get_line(Pike_fp->pc,Pike_fp->context->prog,&linep); |
if (filep->size_shift) |
file = "..."; |
else { |
file = filep->str; |
while((f=STRCHR(file,'/'))) |
file=f+1; |
} |
}else{ |
linep=0; |
file="-"; |
} |
|
{ |
char buf[40]; |
if (linep) |
SNPRINTF(buf, sizeof (buf), "%s:%ld:", file, (long)linep); |
else |
SNPRINTF(buf, sizeof (buf), "%s:", file); |
fprintf(stderr,"- %-20s %s\n",buf,s); |
} |
|
if (filep) { |
free_string(filep); |
} |
free(s); |
} |
|
static struct pike_frame_chunk { |
struct pike_frame_chunk *next; |
} *pike_frame_chunks; |
static int num_pike_frame_chunks; |
static int num_pike_frames; |
|
PMOD_EXPORT void really_free_pike_frame( struct pike_frame *X ) |
{ |
free_object(X->current_object); |
if(X->current_program) |
free_program(X->current_program); |
if(X->scope) |
free_pike_scope(X->scope); |
DO_IF_SECURITY( if(X->current_creds) free_object(X->current_creds) ); |
DO_IF_DEBUG( |
if(X->flags & PIKE_FRAME_MALLOCED_LOCALS) |
Pike_fatal("Pike frame is not supposed to have malloced locals here!\n")); |
DO_IF_DMALLOC( |
X->current_program=0; |
X->context=0; |
X->scope=0; |
X->current_object=0; |
X->flags=0; |
X->expendible=0; |
X->locals=0; |
DO_IF_SECURITY( X->current_creds=0; ) |
); |
X->next = free_pike_frame; |
PIKE_MEMPOOL_FREE(&free_pike_frame, X, sizeof(struct pike_frame)); |
free_pike_frame = X; |
} |
|
struct pike_frame *alloc_pike_frame(void) |
{ |
struct pike_frame *res; |
if( free_pike_frame ) |
{ |
res = free_pike_frame; |
PIKE_MEMPOOL_ALLOC(&free_pike_frame, res, sizeof(struct pike_frame)); |
PIKE_MEM_RW_RANGE(&res->next, sizeof(void*)); |
free_pike_frame = res->next; |
PIKE_MEM_WO_RANGE(&res->next, sizeof(void*)); |
res->refs=0; |
add_ref(res); |
res->flags=0; |
res->next=0; |
res->scope=0; |
|
DO_IF_SECURITY( |
if(CURRENT_CREDS) { |
add_ref(res->current_creds=CURRENT_CREDS); |
} else { |
res->current_creds = 0; |
}); |
|
return res; |
} |
|
|
{ |
unsigned int i; |
#define FRAMES_PER_CHUNK ((4096*4-8-sizeof(struct pike_frame_chunk))/sizeof(struct pike_frame)) |
#define FRAME_CHUNK_SIZE (FRAMES_PER_CHUNK*sizeof(struct pike_frame))+sizeof(struct pike_frame_chunk) |
|
void *p = xalloc( FRAME_CHUNK_SIZE ); |
num_pike_frame_chunks++; |
((struct pike_frame_chunk*)p)->next = pike_frame_chunks; |
pike_frame_chunks = p; |
free_pike_frame = res = (struct pike_frame*)((char*)p+sizeof(struct pike_frame_chunk)); |
for( i=1; i<FRAMES_PER_CHUNK; i++ ) |
{ |
res->next = &free_pike_frame[i]; |
res = res->next; |
} |
res->next = NULL; |
num_pike_frames+=FRAMES_PER_CHUNK; |
} |
return alloc_pike_frame(); |
} |
|
void count_memory_in_pike_frames(size_t *num, size_t *size ) |
{ |
*num = num_pike_frames; |
*size = num_pike_frame_chunks * (FRAME_CHUNK_SIZE*8); |
} |
#undef FRAMES_PER_CHUNK |
#undef FRAME_CHUNK_SIZE |
|
static void free_all_pike_frame_blocks(void) |
{ |
struct pike_frame_chunk *x = pike_frame_chunks, *n; |
while( x ) |
{ |
n = x->next; |
free(x); |
x = n; |
} |
free_pike_frame = NULL; |
pike_frame_chunks = NULL; |
num_pike_frames=0; |
num_pike_frame_chunks=0; |
} |
|
void really_free_pike_scope(struct pike_frame *scope) |
{ |
if(scope->flags & PIKE_FRAME_MALLOCED_LOCALS) |
{ |
free_mixed_svalues(scope->locals,scope->num_locals); |
free((char *)(scope->locals)); |
#ifdef PIKE_DEBUG |
scope->flags&=~PIKE_FRAME_MALLOCED_LOCALS; |
#endif |
} |
really_free_pike_frame(scope); |
} |
|
void *lower_mega_apply( INT32 args, struct object *o, ptrdiff_t fun ) |
{ |
struct program *p; |
check_stack(256); |
check_mark_stack(256); |
|
if( (p = o->prog) ) |
{ |
struct svalue *save_sp = Pike_sp - args; |
struct reference *ref = p->identifier_references + fun; |
struct inherit *context = p->inherits + ref->inherit_offset; |
struct identifier *function = context->prog->identifiers + ref->identifier_offset; |
struct svalue *constant = NULL; |
struct pike_frame *new_frame = NULL; |
|
int type = (function->identifier_flags & (IDENTIFIER_TYPE_MASK|IDENTIFIER_ALIAS)); |
if( o->prog != pike_trampoline_program && function->func.offset != -1 ) |
{ |
switch( type ) |
{ |
case IDENTIFIER_CONSTANT: |
constant = &context->prog->constants[function->func.const_info.offset].sval; |
if( TYPEOF(*constant) != PIKE_T_PROGRAM ) |
break; |
case IDENTIFIER_C_FUNCTION: |
case IDENTIFIER_PIKE_FUNCTION: |
if( !new_frame ) |
{ |
new_frame=alloc_pike_frame(); |
debug_malloc_touch(new_frame); |
} |
#ifdef PROFILING |
new_frame->children_base = Pike_interpreter.accounted_time; |
new_frame->start_time = get_cpu_time() - Pike_interpreter.unlocked_time; |
|
|
|
|
|
|
|
|
new_frame->ident = ref->identifier_offset; |
DO_IF_PROFILING_DEBUG({ |
fprintf(stderr, "%p{: Push at %" PRINT_CPU_TIME |
" %" PRINT_CPU_TIME "\n", |
Pike_interpreter.thread_state, new_frame->start_time, |
new_frame->children_base); |
}); |
#endif |
new_frame->next = Pike_fp; |
add_ref(new_frame->current_object = o); |
add_ref(new_frame->current_program = p); |
new_frame->context = context; |
new_frame->fun = DO_NOT_WARN((unsigned INT16)fun); |
new_frame->expendible = new_frame->locals = save_sp; |
new_frame->args = args; |
new_frame->save_sp = save_sp; |
|
#ifdef PIKE_DEBUG |
if (Pike_in_gc > GC_PASS_PREPARE && Pike_in_gc < GC_PASS_FREE) |
Pike_fatal("Pike code called within gc.\n"); |
#endif |
|
Pike_fp = new_frame; |
debug_malloc_touch(Pike_fp); |
#ifdef PROFILING |
function->num_calls++; |
function->recur_depth++; |
#endif |
#ifdef PIKE_USE_MACHINE_CODE |
call_check_threads_etc(); |
#endif |
|
if( !constant ) |
{ |
if (PIKE_FN_START_ENABLED()) |
{ |
|
|
|
|
dynamic_buffer save_buf; |
dynbuf_string obj_name; |
struct svalue obj_sval; |
SET_SVAL(obj_sval, T_OBJECT, 0, object, o); |
init_buf(&save_buf); |
safe_describe_svalue(&obj_sval, 0, NULL); |
obj_name = complex_free_buf(&save_buf); |
PIKE_FN_START(function->name->size_shift == 0 ? |
function->name->str : "[widestring fn name]", |
obj_name.str); |
} |
if(UNLIKELY(Pike_interpreter.trace_level)) |
{ |
dynamic_buffer save_buf; |
char buf[50]; |
|
init_buf(&save_buf); |
sprintf(buf, "%lx->", DO_NOT_WARN((long) PTR_TO_INT (o))); |
my_strcat(buf); |
if (function->name->size_shift) |
my_strcat ("[widestring function name]"); |
else |
my_strcat(function->name->str); |
do_trace_call(args, &save_buf); |
} |
if( type == IDENTIFIER_C_FUNCTION ) |
{ |
new_frame->num_args = args; |
new_frame->num_locals = args; |
new_frame->current_storage = o->storage+context->storage_offset; |
new_frame->pc = 0; |
(*function->func.c_fun)(args); |
|
|
|
|
if(save_sp+1 > Pike_sp) |
{ |
push_int(0); |
} else if(save_sp+1 < Pike_sp) { |
stack_pop_n_elems_keep_top( Pike_sp-save_sp-1 ); |
} |
if(UNLIKELY(Pike_interpreter.trace_level>1)) |
do_trace_func_return (1, o, fun); |
goto pop; |
} |
new_frame->save_mark_sp=new_frame->mark_sp_base=Pike_mark_sp; |
new_frame->pc = new_frame->context->prog->program + function->func.offset |
#ifdef ENTRY_PROLOGUE_SIZE |
+ ENTRY_PROLOGUE_SIZE |
#endif /* ENTRY_PROLOGUE_SIZE */ |
; |
return new_frame->pc; |
} |
else |
{ |
struct object *tmp; |
new_frame->pc = 0; |
new_frame->num_args = 0; |
tmp=parent_clone_object(constant->u.program, |
o, |
fun, |
args); |
push_object(tmp); |
pop: |
POP_PIKE_FRAME(); |
return 0; |
} |
} |
} |
} |
return low_mega_apply( APPLY_LOW, args, o, (void*)fun ); |
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
void* low_mega_apply(enum apply_type type, INT32 args, void *arg1, void *arg2) |
{ |
struct object *o = NULL; |
struct pike_frame *scope=0; |
ptrdiff_t fun=0; |
struct svalue *save_sp=Pike_sp-args; |
|
#if defined(PIKE_DEBUG) && defined(_REENTRANT) |
if(d_flag) |
{ |
THREAD_T self = th_self(); |
|
CHECK_INTERPRETER_LOCK(); |
|
if (Pike_interpreter.thread_state) { |
if (!th_equal(Pike_interpreter.thread_state->id, self)) |
Pike_fatal("Current thread is wrong.\n"); |
|
DEBUG_CHECK_THREAD(); |
} |
} |
#endif |
|
switch(type) |
{ |
case APPLY_STACK: |
if(!args) |
PIKE_ERROR("`()", "Too few arguments (apply stack).\n", Pike_sp, 0); |
args--; |
arg1=(void *)(Pike_sp-args-1); |
|
case APPLY_SVALUE: |
case APPLY_SVALUE_STRICT: |
apply_svalue: |
{ |
struct svalue *s=(struct svalue *)arg1; |
switch(TYPEOF(*s)) |
{ |
case T_INT: |
if (!s->u.integer) { |
PIKE_ERROR("0", "Attempt to call the NULL-value\n", Pike_sp, args); |
} else { |
Pike_error("Attempt to call the value %"PRINTPIKEINT"d\n", |
s->u.integer); |
} |
|
case T_STRING: |
if (s->u.string->len > 20) { |
Pike_error("Attempt to call the string \"%20S\"...\n", s->u.string); |
} else { |
Pike_error("Attempt to call the string \"%S\"\n", s->u.string); |
} |
case T_MAPPING: |
Pike_error("Attempt to call a mapping\n"); |
default: |
Pike_error("Call to non-function value type:%s.\n", |
get_name_of_type(TYPEOF(*s))); |
|
case T_FUNCTION: |
if(SUBTYPEOF(*s) == FUNCTION_BUILTIN) |
{ |
#ifdef PIKE_DEBUG |
struct svalue *expected_stack = Pike_sp-args; |
#endif |
if(Pike_interpreter.trace_level>1) |
{ |
dynamic_buffer save_buf; |
init_buf(&save_buf); |
if (s->u.efun->name->size_shift) |
my_strcat ("[widestring function name]"); |
else |
my_strcat (s->u.efun->name->str); |
do_trace_call(args, &save_buf); |
} |
if (PIKE_FN_START_ENABLED()) { |
|
|
|
|
PIKE_FN_START(s->u.efun->name->size_shift == 0 ? |
s->u.efun->name->str : "[widestring fn name]", |
""); |
} |
FAST_CHECK_THREADS_ON_CALL(); |
(*(s->u.efun->function))(args); |
if (PIKE_FN_DONE_ENABLED()) { |
|
|
|
PIKE_FN_DONE(s->u.efun->name->size_shift == 0 ? |
s->u.efun->name->str : "[widestring fn name]"); |
} |
|
#ifdef PIKE_DEBUG |
s->u.efun->runs++; |
if(Pike_sp != expected_stack + !s->u.efun->may_return_void) |
{ |
if(Pike_sp < expected_stack) |
Pike_fatal("Function popped too many arguments: %S\n", |
s->u.efun->name); |
if(Pike_sp>expected_stack+1) |
Pike_fatal("Function left droppings on stack: %S\n", |
s->u.efun->name); |
if(Pike_sp == expected_stack && !s->u.efun->may_return_void) |
Pike_fatal("Non-void function returned without return value on stack: %S %d\n", |
s->u.efun->name, s->u.efun->may_return_void); |
if(Pike_sp==expected_stack+1 && s->u.efun->may_return_void) |
Pike_fatal("Void function returned with a value on the stack: %S %d\n", |
s->u.efun->name, s->u.efun->may_return_void); |
} |
#endif |
|
break; |
}else{ |
type=APPLY_SVALUE; |
o=s->u.object; |
fun = SUBTYPEOF(*s); |
if(o->prog == pike_trampoline_program && |
fun == QUICK_FIND_LFUN(pike_trampoline_program, LFUN_CALL)) |
{ |
fun=((struct pike_trampoline *)(o->storage))->func; |
scope=((struct pike_trampoline *)(o->storage))->frame; |
o=scope->current_object; |
} |
goto apply_low; |
} |
break; |
|
case T_ARRAY: |
if(Pike_interpreter.trace_level) |
{ |
dynamic_buffer save_buf; |
init_buf(&save_buf); |
safe_describe_svalue(s,0,0); |
do_trace_call(args, &save_buf); |
} |
if (PIKE_FN_START_ENABLED()) { |
|
|
|
|
PIKE_FN_START("[array]", ""); |
} |
apply_array(s->u.array, args, (type == APPLY_STACK)); |
break; |
|
case PIKE_T_TYPE: |
if (args != 1) { |
|
SIMPLE_WRONG_NUM_ARGS_ERROR("cast", 1); |
} |
o_cast(s->u.type, compile_type_to_runtime_type(s->u.type)); |
break; |
|
case T_PROGRAM: |
if(Pike_interpreter.trace_level) |
{ |
dynamic_buffer save_buf; |
init_buf(&save_buf); |
safe_describe_svalue(s,0,0); |
do_trace_call(args, &save_buf); |
} |
if (PIKE_FN_START_ENABLED()) { |
|
|
|
|
dynamic_buffer save_buf; |
dynbuf_string prog_name; |
init_buf(&save_buf); |
safe_describe_svalue(s,0,0); |
prog_name = complex_free_buf(&save_buf); |
PIKE_FN_START("[program]", prog_name.str); |
} |
push_object(clone_object(s->u.program,args)); |
break; |
|
case T_OBJECT: |
|
o=s->u.object; |
if(o->prog == pike_trampoline_program) |
{ |
fun=((struct pike_trampoline *)(o->storage))->func; |
scope=((struct pike_trampoline *)(o->storage))->frame; |
o=scope->current_object; |
goto apply_low; |
} |
fun=LFUN_CALL; |
type=APPLY_SVALUE; |
goto call_lfun; |
} |
break; |
} |
|
call_lfun: { |
int lfun; |
#ifdef PIKE_DEBUG |
if(fun < 0 || fun >= NUM_LFUNS) |
Pike_fatal("Apply lfun on illegal value!\n"); |
#endif |
if(!o->prog) |
PIKE_ERROR("destructed object", "Apply on destructed object.\n", Pike_sp, args); |
lfun = FIND_LFUN(o->prog, fun); |
if (lfun < 0) |
Pike_error ("Cannot call undefined lfun %s.\n", lfun_names[fun]); |
fun = lfun; |
goto apply_low; |
} |
|
case APPLY_LOW: |
o = (struct object *)arg1; |
fun = PTR_TO_INT(arg2); |
if(o->prog == pike_trampoline_program && |
fun == QUICK_FIND_LFUN(pike_trampoline_program, LFUN_CALL)) |
{ |
fun=((struct pike_trampoline *)(o->storage))->func; |
scope=((struct pike_trampoline *)(o->storage))->frame; |
o=scope->current_object; |
} |
|
apply_low: |
#include "apply_low.h" |
break; |
} |
|
if(save_sp+1 > Pike_sp) |
{ |
if(type != APPLY_SVALUE_STRICT) { |
push_int(0); |
if(Pike_interpreter.trace_level>1) |
do_trace_func_return (1, o, fun); |
} |
else |
if(Pike_interpreter.trace_level>1) |
do_trace_func_return (0, o, fun); |
}else{ |
if(save_sp+1 < Pike_sp) |
{ |
assign_svalue(save_sp,Pike_sp-1); |
pop_n_elems(Pike_sp-save_sp-1); |
low_destruct_objects_to_destruct(); |
} |
if(Pike_interpreter.trace_level>1) |
do_trace_func_return (1, o, fun); |
} |
|
if (PIKE_FN_DONE_ENABLED()) { |
|
|
|
char *fn = "(unknown)"; |
if (o && o->prog) { |
struct identifier *id = ID_FROM_INT(o->prog, fun); |
fn = id->name->size_shift == 0 ? id->name->str : "[widestring fn name]"; |
} |
PIKE_FN_DONE(fn); |
} |
|
return 0; |
} |
|
|
|
#define basic_low_return(save_sp) \ |
DO_IF_DEBUG( \ |
if(Pike_mark_sp < Pike_fp->save_mark_sp) \ |
Pike_fatal("Popped below save_mark_sp!\n"); \ |
if(Pike_sp<Pike_interpreter.evaluator_stack) \ |
Pike_fatal("Stack error (also simple).\n"); \ |
) \ |
\ |
Pike_mark_sp=Pike_fp->save_mark_sp; \ |
\ |
POP_PIKE_FRAME() |
|
|
void low_return(void) |
{ |
struct svalue *save_sp = Pike_fp->save_sp+1; |
struct object *o = Pike_fp->current_object; |
int fun = Pike_fp->fun; |
|
if (PIKE_FN_DONE_ENABLED()) { |
|
|
|
char *fn = "(unknown)"; |
if (o && o->prog) { |
struct identifier *id = ID_FROM_INT(o->prog, fun); |
fn = id->name->size_shift == 0 ? id->name->str : "[widestring fn name]"; |
} |
PIKE_FN_DONE(fn); |
} |
|
#if defined (PIKE_USE_MACHINE_CODE) && defined (OPCODE_RETURN_JUMPADDR) |
|
* object and its program then the program would be freed in |
* destruct_objects_to_destruct below. However, we're still |
* executing in an opcode in its code so we need prog->program to |
* stick around for a little while more to handle the returned |
* address. We therefore add a ref to the current object so that |
* it'll live through this function. */ |
add_ref (o); |
#endif |
|
basic_low_return (save_sp); |
|
stack_pop_n_elems_keep_top (Pike_sp - save_sp); |
{ |
|
extern struct object *objects_to_destruct; |
if( objects_to_destruct ) |
destruct_objects_to_destruct(); |
} |
|
#ifdef PIKE_DEBUG |
if(save_sp > Pike_sp) |
Pike_fatal("Pike function did not leave an return value\n"); |
#endif |
|
if(UNLIKELY(Pike_interpreter.trace_level>1)) |
do_trace_func_return (1, o, fun); |
|
#if defined (PIKE_USE_MACHINE_CODE) && defined (OPCODE_RETURN_JUMPADDR) |
free_object (o); |
#endif |
} |
|
void low_return_pop(void) |
{ |
struct svalue *save_sp = Pike_fp->save_sp; |
#if defined (PIKE_USE_MACHINE_CODE) && defined (OPCODE_RETURN_JUMPADDR) |
|
struct object *o = Pike_fp->current_object; |
add_ref (o); |
#endif |
|
if (PIKE_FN_DONE_ENABLED()) { |
|
|
|
char *fn = "(unknown)"; |
struct object *o = Pike_fp->current_object; |
int fun = Pike_fp->fun; |
if (o && o->prog) { |
struct identifier *id = ID_FROM_INT(o->prog, fun); |
fn = id->name->size_shift == 0 ? id->name->str : "[widestring fn name]"; |
} |
PIKE_FN_DONE(fn); |
} |
|
basic_low_return (save_sp); |
|
pop_n_elems(Pike_sp-save_sp); |
|
destruct_objects_to_destruct(); |
|
#if defined (PIKE_USE_MACHINE_CODE) && defined (OPCODE_RETURN_JUMPADDR) |
free_object (o); |
#endif |
} |
|
|
void unlink_previous_frame(void) |
{ |
struct pike_frame *current, *prev; |
|
current=Pike_interpreter.frame_pointer; |
prev=current->next; |
#ifdef PIKE_DEBUG |
{ |
JMP_BUF *rec; |
|
|
|
|
if((rec=Pike_interpreter.recoveries)) |
{ |
while(rec->frame_pointer == current) rec=rec->previous; |
|
if(rec->frame_pointer == current->next) |
Pike_fatal("You can't touch this!\n"); |
} |
} |
#endif |
|
*/ |
current->save_sp=prev->save_sp; |
current->save_mark_sp=prev->save_mark_sp; |
current->flags = prev->flags; |
|
|
Pike_interpreter.frame_pointer=prev; |
|
#ifdef PROFILING |
{ |
|
|
|
cpu_time_t total_time = |
get_cpu_time() - (Pike_interpreter.unlocked_time + current->start_time); |
cpu_time_t child_time = |
Pike_interpreter.accounted_time - current->children_base; |
struct identifier *function = |
current->context->prog->identifiers + current->ident; |
if (!function->recur_depth) |
function->total_time += total_time; |
total_time -= child_time; |
function->self_time += total_time; |
Pike_interpreter.accounted_time += total_time; |
#ifdef PROFILING_DEBUG |
fprintf(stderr, "%p: Unlinking previous frame.\n" |
"Previous: %" PRINT_CPU_TIME " %" PRINT_CPU_TIME "\n" |
"Current: %" PRINT_CPU_TIME " %" PRINT_CPU_TIME "\n", |
Pike_interpreter.thread_state, |
prev->start_time, prev->children_base, |
current->start_time, current->children_base); |
#endif /* PROFILING_DEBUG */ |
} |
#endif /* PROFILING */ |
|
|
POP_PIKE_FRAME(); |
|
|
current->next=Pike_interpreter.frame_pointer; |
Pike_interpreter.frame_pointer=current; |
|
#ifdef PROFILING |
current->children_base = Pike_interpreter.accounted_time; |
current->start_time = get_cpu_time() - Pike_interpreter.unlocked_time; |
#endif /* PROFILING */ |
} |
|
static void restore_catching_eval_jmpbuf (LOW_JMP_BUF *p) |
{ |
Pike_interpreter.catching_eval_jmpbuf = p; |
} |
|
PMOD_EXPORT void mega_apply(enum apply_type type, INT32 args, void *arg1, void *arg2) |
{ |
|
|
|
LOW_JMP_BUF *saved_jmpbuf = Pike_interpreter.catching_eval_jmpbuf; |
ONERROR uwp; |
Pike_interpreter.catching_eval_jmpbuf = NULL; |
SET_ONERROR (uwp, restore_catching_eval_jmpbuf, saved_jmpbuf); |
|
|
|
|
check_c_stack(Pike_interpreter.c_stack_margin ? |
Pike_interpreter.c_stack_margin : 100); |
if( low_mega_apply(type, args, arg1, arg2) ) |
{ |
eval_instruction(Pike_fp->pc |
#ifdef ENTRY_PROLOGUE_SIZE |
- ENTRY_PROLOGUE_SIZE |
#endif /* ENTRY_PROLOGUE_SIZE */ |
); |
low_return(); |
} |
CALL_AND_UNSET_ONERROR(uwp); |
} |
|
PMOD_EXPORT void mega_apply_low(INT32 args, void *arg1, ptrdiff_t arg2) |
{ |
|
|
|
LOW_JMP_BUF *saved_jmpbuf = Pike_interpreter.catching_eval_jmpbuf; |
ONERROR uwp; |
Pike_interpreter.catching_eval_jmpbuf = NULL; |
SET_ONERROR (uwp, restore_catching_eval_jmpbuf, saved_jmpbuf); |
|
|
|
|
check_c_stack(Pike_interpreter.c_stack_margin ? |
Pike_interpreter.c_stack_margin : 100); |
if( lower_mega_apply( args, arg1, arg2 ) ) |
{ |
eval_instruction(Pike_fp->pc |
#ifdef ENTRY_PROLOGUE_SIZE |
- ENTRY_PROLOGUE_SIZE |
#endif /* ENTRY_PROLOGUE_SIZE */ |
); |
low_return(); |
} |
CALL_AND_UNSET_ONERROR(uwp); |
} |
|
|
|
|
static int catching_eval_instruction (PIKE_OPCODE_T *pc) |
{ |
LOW_JMP_BUF jmpbuf; |
#ifdef PIKE_DEBUG |
if (Pike_interpreter.catching_eval_jmpbuf) |
Pike_fatal ("catching_eval_jmpbuf already active.\n"); |
#endif |
Pike_interpreter.catching_eval_jmpbuf = &jmpbuf; |
if (LOW_SETJMP (jmpbuf)) |
{ |
Pike_interpreter.catching_eval_jmpbuf = NULL; |
#ifdef PIKE_DEBUG |
pike_trace(3, "- catching_eval_instruction(%p) caught error ==> -3\n", |
pc); |
#endif |
return -3; |
}else{ |
int x; |
check_c_stack(8192); |
x = eval_instruction(pc); |
Pike_interpreter.catching_eval_jmpbuf = NULL; |
#ifdef PIKE_DEBUG |
pike_trace(3, "- catching_eval_instruction(%p) ==> %d\n", pc, x); |
#endif |
return x; |
} |
} |
|
|
|
|
|
|
|
|
|
|
|
PMOD_EXPORT void f_call_function(INT32 args) |
{ |
mega_apply(APPLY_STACK,args,0,0); |
} |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
PMOD_EXPORT void call_handle_error(void) |
{ |
dmalloc_touch_svalue(&throw_value); |
|
if (Pike_interpreter.svalue_stack_margin > LOW_SVALUE_STACK_MARGIN) { |
int old_t_flag = Pike_interpreter.trace_level; |
Pike_interpreter.trace_level = 0; |
Pike_interpreter.svalue_stack_margin = LOW_SVALUE_STACK_MARGIN; |
Pike_interpreter.c_stack_margin = LOW_C_STACK_MARGIN; |
move_svalue (Pike_sp++, &throw_value); |
mark_free_svalue (&throw_value); |
|
if (get_master()) { |
ONERROR tmp; |
SET_ONERROR(tmp,exit_on_error,"Error in handle_error in master object!"); |
APPLY_MASTER("handle_error", 1); |
UNSET_ONERROR(tmp); |
} |
else { |
dynamic_buffer save_buf; |
char *s; |
fprintf (stderr, "There's no master to handle the error. Dumping it raw:\n"); |
init_buf(&save_buf); |
safe_describe_svalue (Pike_sp - 1, 0, 0); |
s=simple_free_buf(&save_buf); |
fprintf(stderr,"%s\n",s); |
free(s); |
if (TYPEOF(Pike_sp[-1]) == PIKE_T_OBJECT && Pike_sp[-1].u.object->prog) { |
int fun = find_identifier("backtrace", Pike_sp[-1].u.object->prog); |
if (fun != -1) { |
fprintf(stderr, "Attempting to extract the backtrace.\n"); |
safe_apply_low2(Pike_sp[-1].u.object, fun, 0, 0); |
init_buf(&save_buf); |
safe_describe_svalue(Pike_sp - 1, 0, 0); |
pop_stack(); |
s=simple_free_buf(&save_buf); |
fprintf(stderr,"%s\n",s); |
free(s); |
} |
} |
} |
|
pop_stack(); |
Pike_interpreter.svalue_stack_margin = SVALUE_STACK_MARGIN; |
Pike_interpreter.c_stack_margin = C_STACK_MARGIN; |
Pike_interpreter.trace_level = old_t_flag; |
} |
|
else { |
free_svalue(&throw_value); |
mark_free_svalue (&throw_value); |
} |
} |
|
|
int apply_low_safe_and_stupid(struct object *o, INT32 offset) |
{ |
JMP_BUF tmp; |
struct pike_frame *new_frame=alloc_pike_frame(); |
int ret; |
volatile int use_dummy_reference = 1; |
struct program *prog = o->prog; |
int p_flags = prog->flags; |
LOW_JMP_BUF *saved_jmpbuf; |
int fun = -1; |
|
|
|
|
|
for (fun = prog->num_identifier_references; fun--;) { |
if (!prog->identifier_references[fun].inherit_offset) { |
use_dummy_reference = 0; |
break; |
} |
} |
|
if (use_dummy_reference) { |
|
struct identifier dummy; |
struct reference dummy_ref = { |
0, 0, ID_HIDDEN, |
PIKE_T_UNKNOWN, { 0, }, |
}; |
|
copy_shared_string(dummy.name, empty_pike_string); |
copy_pike_type(dummy.type, function_type_string); |
dummy.filename_strno = -1; |
dummy.linenumber = 0; |
dummy.run_time_type = PIKE_T_FUNCTION; |
dummy.identifier_flags = IDENTIFIER_PIKE_FUNCTION|IDENTIFIER_HAS_BODY; |
dummy.func.offset = offset; |
dummy.opt_flags = 0; |
dummy_ref.identifier_offset = prog->num_identifiers; |
add_to_identifiers(dummy); |
fun = prog->num_identifier_references; |
add_to_identifier_references(dummy_ref); |
} |
|
|
new_frame->next = Pike_fp; |
add_ref(new_frame->current_object = o); |
add_ref(new_frame->current_program = prog); |
new_frame->context = prog->inherits; |
new_frame->locals = Pike_sp; |
new_frame->expendible=new_frame->locals; |
new_frame->args = 0; |
new_frame->num_args=0; |
new_frame->num_locals=0; |
new_frame->fun = fun; |
new_frame->pc = 0; |
new_frame->current_storage=o->storage; |
|
#ifdef PIKE_DEBUG |
if (Pike_fp && (new_frame->locals < Pike_fp->locals)) { |
fatal("New locals below old locals: %p < %p\n", |
new_frame->locals, Pike_fp->locals); |
} |
#endif /* PIKE_DEBUG */ |
|
Pike_fp = new_frame; |
|
saved_jmpbuf = Pike_interpreter.catching_eval_jmpbuf; |
Pike_interpreter.catching_eval_jmpbuf = NULL; |
|
if(SETJMP(tmp)) |
{ |
ret=1; |
}else{ |
int tmp; |
new_frame->mark_sp_base=new_frame->save_mark_sp=Pike_mark_sp; |
tmp=eval_instruction(prog->program + offset); |
Pike_mark_sp=new_frame->save_mark_sp; |
|
#ifdef PIKE_DEBUG |
if (tmp != -1) |
Pike_fatal ("Unexpected return value from eval_instruction: %d\n", tmp); |
if(Pike_sp<Pike_interpreter.evaluator_stack) |
Pike_fatal("Stack error (simple).\n"); |
#endif |
ret=0; |
} |
UNSETJMP(tmp); |
|
Pike_interpreter.catching_eval_jmpbuf = saved_jmpbuf; |
|
if (use_dummy_reference) { |
|
free_type(function_type_string); |
free_string(empty_pike_string); |
prog->num_identifier_references--; |
prog->num_identifiers--; |
} |
|
assert (new_frame == Pike_fp); |
LOW_POP_PIKE_FRAME (new_frame); |
|
return ret; |
} |
|
int safe_apply_low2(struct object *o, int fun, int args, |
const char *fun_name) |
{ |
JMP_BUF recovery; |
int ret = 0; |
|
free_svalue(& throw_value); |
mark_free_svalue (&throw_value); |
if(SETJMP_SP(recovery, args)) |
{ |
if(fun_name) call_handle_error(); |
push_int(0); |
ret = 0; |
}else{ |
if (fun >= 0) { |
apply_low(o,fun,args); |
} else if (fun_name) { |
Pike_error("Cannot call unknown function \"%s\".\n", fun_name); |
} else { |
pop_n_elems(args); |
push_int(0); |
} |
ret = 1; |
} |
UNSETJMP(recovery); |
return ret; |
} |
|
PMOD_EXPORT int safe_apply_low(struct object *o, int fun, int args) |
{ |
return safe_apply_low2(o, fun, args, "Unknown function."); |
} |
|
PMOD_EXPORT int safe_apply(struct object *o, const char *fun, INT32 args) |
{ |
int id; |
#ifdef PIKE_DEBUG |
if(!o->prog) Pike_fatal("Apply safe on destructed object.\n"); |
#endif |
id = find_identifier(fun, o->prog); |
return safe_apply_low2(o, id, args, fun); |
} |
|
|
int low_unsafe_apply_handler(const char *fun, |
struct object *handler, |
struct object *compat, |
INT32 args) |
{ |
int i; |
#if 0 |
fprintf(stderr, "low_unsafe_apply_handler(\"%s\", 0x%08p, 0x%08p, %d)\n", |
fun, handler, compat, args); |
#endif /* 0 */ |
if (handler && handler->prog && |
(i = find_identifier(fun, handler->prog)) != -1) { |
apply_low(handler, i, args); |
} else if (compat && compat->prog && |
(i = find_identifier(fun, compat->prog)) != -1) { |
apply_low(compat, i, args); |
} else { |
struct object *master_obj = get_master(); |
if (master_obj && (i = find_identifier(fun, master_obj->prog)) != -1) |
apply_low(master_obj, i, args); |
else { |
pop_n_elems(args); |
push_undefined(); |
return 0; |
} |
} |
return 1; |
} |
|
void low_safe_apply_handler(const char *fun, |
struct object *handler, |
struct object *compat, |
INT32 args) |
{ |
int i; |
#if 0 |
fprintf(stderr, "low_safe_apply_handler(\"%s\", 0x%08p, 0x%08p, %d)\n", |
fun, handler, compat, args); |
#endif /* 0 */ |
if (handler && handler->prog && |
(i = find_identifier(fun, handler->prog)) != -1) { |
safe_apply_low2(handler, i, args, fun); |
} else if (compat && compat->prog && |
(i = find_identifier(fun, compat->prog)) != -1) { |
safe_apply_low2(compat, i, args, fun); |
} else { |
struct object *master_obj = master(); |
if ((i = find_identifier(fun, master_obj->prog)) != -1) |
safe_apply_low2(master_obj, i, args, fun); |
else { |
pop_n_elems(args); |
push_undefined(); |
} |
} |
} |
|
|
PMOD_EXPORT int safe_apply_handler(const char *fun, |
struct object *handler, |
struct object *compat, |
INT32 args, |
TYPE_FIELD rettypes) |
{ |
JMP_BUF recovery; |
int ret; |
|
STACK_LEVEL_START(args); |
|
#if 0 |
fprintf(stderr, "safe_apply_handler(\"%s\", 0x%08p, 0x%08p, %d)\n", |
fun, handler, compat, args); |
#endif /* 0 */ |
|
free_svalue(& throw_value); |
mark_free_svalue (&throw_value); |
|
if (SETJMP_SP(recovery, args)) { |
ret = 0; |
} else { |
if (low_unsafe_apply_handler (fun, handler, compat, args) && |
rettypes && !((1 << TYPEOF(Pike_sp[-1])) & rettypes)) { |
if ((rettypes & BIT_ZERO) && SAFE_IS_ZERO (Pike_sp - 1)) { |
pop_stack(); |
push_int(0); |
} |
else { |
Pike_error("Invalid return value from %s: %O\n", |
fun, Pike_sp-1); |
} |
} |
|
ret = 1; |
} |
|
UNSETJMP(recovery); |
|
STACK_LEVEL_DONE(ret); |
|
return ret; |
} |
|
PMOD_EXPORT void apply_lfun(struct object *o, int lfun, int args) |
{ |
int fun; |
#ifdef PIKE_DEBUG |
if(lfun < 0 || lfun >= NUM_LFUNS) |
Pike_fatal("Apply lfun on illegal value!\n"); |
#endif |
if(!o->prog) |
PIKE_ERROR("destructed object", "Apply on destructed object.\n", |
Pike_sp, args); |
|
if ((fun = (int)FIND_LFUN(o->prog, lfun)) < 0) |
Pike_error("Calling undefined lfun::%s.\n", lfun_names[lfun]); |
|
apply_low(o, fun, args); |
} |
|
PMOD_EXPORT void apply_shared(struct object *o, |
struct pike_string *fun, |
int args) |
{ |
int id = find_shared_string_identifier(fun, o->prog); |
if (id >= 0) |
apply_low(o, id, args); |
else |
Pike_error("Cannot call unknown function \"%S\".\n", fun); |
} |
|
PMOD_EXPORT void apply(struct object *o, const char *fun, int args) |
{ |
int id = find_identifier(fun, o->prog); |
if (id >= 0) |
apply_low(o, id, args); |
else |
Pike_error ("Cannot call unknown function \"%s\".\n", fun); |
} |
|
|
PMOD_EXPORT void apply_svalue(struct svalue *s, INT32 args) |
{ |
if(TYPEOF(*s) == T_INT) |
{ |
pop_n_elems(args); |
push_int(0); |
}else{ |
ptrdiff_t expected_stack=Pike_sp-args+1 - Pike_interpreter.evaluator_stack; |
|
strict_apply_svalue(s,args); |
if(Pike_sp > (expected_stack + Pike_interpreter.evaluator_stack)) |
{ |
pop_n_elems(Pike_sp-(expected_stack + Pike_interpreter.evaluator_stack)); |
} |
else if(Pike_sp < (expected_stack + Pike_interpreter.evaluator_stack)) |
{ |
push_int(0); |
} |
#ifdef PIKE_DEBUG |
if(Pike_sp < (expected_stack + Pike_interpreter.evaluator_stack)) |
Pike_fatal("Stack underflow!\n"); |
#endif |
} |
} |
|
PMOD_EXPORT void safe_apply_svalue(struct svalue *s, int args, int handle_errors) |
{ |
JMP_BUF recovery; |
free_svalue(& throw_value); |
mark_free_svalue (&throw_value); |
if(SETJMP_SP(recovery, args)) |
{ |
if(handle_errors) call_handle_error(); |
push_int(0); |
}else{ |
apply_svalue (s, args); |
} |
UNSETJMP(recovery); |
} |
|
|
|
PMOD_EXPORT void apply_external(int depth, int fun, INT32 args) |
{ |
struct external_variable_context loc; |
|
loc.o = Pike_fp->current_object; |
loc.parent_identifier = Pike_fp->fun; |
if (loc.o->prog) { |
loc.inherit = INHERIT_FROM_INT(loc.o->prog, loc.parent_identifier); |
|
find_external_context(&loc, depth); |
|
apply_low(loc.o, fun + loc.inherit->identifier_level, args); |
} else { |
PIKE_ERROR("destructed object", "Apply on parent of destructed object.\n", |
Pike_sp, args); |
} |
} |
|
#ifdef PIKE_DEBUG |
void slow_check_stack(void) |
{ |
struct svalue *s,**m; |
struct pike_frame *f; |
|
debug_check_stack(); |
|
if(Pike_sp > &(Pike_interpreter.evaluator_stack[Pike_stack_size])) |
Pike_fatal("Svalue stack overflow. " |
"(%ld entries on stack, stack_size is %ld entries)\n", |
PTRDIFF_T_TO_LONG(Pike_sp - Pike_interpreter.evaluator_stack), |
PTRDIFF_T_TO_LONG(Pike_stack_size)); |
|
if(Pike_mark_sp > &(Pike_interpreter.mark_stack[Pike_stack_size])) |
Pike_fatal("Mark stack overflow.\n"); |
|
if(Pike_mark_sp < Pike_interpreter.mark_stack) |
Pike_fatal("Mark stack underflow.\n"); |
|
for(s=Pike_interpreter.evaluator_stack;s<Pike_sp;s++) { |
|
if (TYPEOF(*s) != PIKE_T_FREE) check_svalue(s); |
} |
|
s=Pike_interpreter.evaluator_stack; |
for(m=Pike_interpreter.mark_stack;m<Pike_mark_sp;m++) |
{ |
if(*m < s) |
Pike_fatal("Mark stack failure.\n"); |
|
s=*m; |
} |
|
if(s > &(Pike_interpreter.evaluator_stack[Pike_stack_size])) |
Pike_fatal("Mark stack exceeds svalue stack\n"); |
|
for(f=Pike_fp;f;f=f->next) |
{ |
if(f->locals) |
{ |
if(f->locals < Pike_interpreter.evaluator_stack || |
f->locals > &(Pike_interpreter.evaluator_stack[Pike_stack_size])) |
Pike_fatal("Local variable pointer points to Finspång.\n"); |
|
if(f->args < 0 || f->args > Pike_stack_size) |
Pike_fatal("FEL FEL FEL! HELP!! (corrupted pike_frame)\n"); |
} |
} |
} |
|
|
static const char *safe_idname_from_int(struct program *prog, int func) |
{ |
|
struct reference *ref; |
struct inherit *inher; |
struct identifier *id; |
if (!prog) |
return "<null program *>"; |
if (func < 0 || func >= prog->num_identifier_references) |
return "<offset outside prog->identifier_references>"; |
if (!prog->identifier_references) |
return "<null prog->identifier_references>"; |
ref = prog->identifier_references + func; |
if (ref->inherit_offset >= prog->num_inherits) |
return "<offset outside prog->inherits>"; |
if (!prog->inherits) |
return "<null prog->inherits>"; |
inher = prog->inherits + ref->inherit_offset; |
prog = inher->prog; |
if (!prog) |
return "<null inherited prog>"; |
if (ref->identifier_offset >= prog->num_identifiers) |
return "<offset outside inherited prog->identifiers>"; |
if (!prog->identifiers) |
return "<null inherited prog->identifiers>"; |
id = prog->identifiers + ref->identifier_offset; |
if (!id->name) |
return "<null identifier->name>"; |
if (id->name->size_shift) |
return "<wide identifier->name->str>"; |
|
return id->name->str; |
} |
|
|
|
|
|
|
|
|
void gdb_backtrace ( |
#ifdef PIKE_THREADS |
THREAD_T thread_id |
#endif |
) |
{ |
struct pike_frame *f, *of; |
|
#ifdef PIKE_THREADS |
extern struct thread_state *gdb_thread_state_for_id(THREAD_T); |
struct thread_state *ts = gdb_thread_state_for_id(thread_id); |
if (!ts) { |
fputs ("Not a Pike thread.\n", stderr); |
return; |
} |
f = ts->state.frame_pointer; |
#else |
f = Pike_fp; |
#endif |
|
for (of = 0; f; f = (of = f)->next) |
if (f->refs) { |
int args, i; |
char *file = NULL; |
INT_TYPE line; |
|
if (f->context) { |
if (f->pc) |
file = low_get_line_plain (f->pc, f->context->prog, &line, 0); |
else |
file = low_get_program_line_plain (f->context->prog, &line, 0); |
} |
if (file) |
fprintf (stderr, "%s:%ld: ", file, (long)line); |
else |
fputs ("unknown program: ", stderr); |
|
if (f->current_program) { |
|
fputs (safe_idname_from_int(f->current_program, f->fun), stderr); |
fputc ('(', stderr); |
} |
else |
fputs ("unknown function(", stderr); |
|
if(!f->locals) |
{ |
args=0; |
}else{ |
args=f->num_args; |
args = DO_NOT_WARN((INT32) MINIMUM(f->num_args, Pike_sp - f->locals)); |
if(of) |
args = DO_NOT_WARN((INT32)MINIMUM(f->num_args,of->locals - f->locals)); |
args=MAXIMUM(args,0); |
} |
|
for (i = 0; i < args; i++) { |
struct svalue *arg = f->locals + i; |
|
switch (TYPEOF(*arg)) { |
case T_INT: |
fprintf (stderr, "%ld", (long) arg->u.integer); |
break; |
|
case T_TYPE: |
|
fputs("type-value", stderr); |
break; |
|
case T_STRING: { |
int i,j=0; |
fputc ('"', stderr); |
for(i=0; i < arg->u.string->len && i < 100; i++) |
{ |
switch(j=index_shared_string(arg->u.string,i)) |
{ |
case '\n': |
fputc ('\\', stderr); |
fputc ('n', stderr); |
break; |
|
case '\t': |
fputc ('\\', stderr); |
fputc ('t', stderr); |
break; |
|
case '\b': |
fputc ('\\', stderr); |
fputc ('b', stderr); |
break; |
|
case '\r': |
fputc ('\\', stderr); |
fputc ('r', stderr); |
break; |
|
|
case '"': |
case '\\': |
fputc ('\\', stderr); |
fputc (j, stderr); |
break; |
|
default: |
if(j>=0 && j<256 && isprint(j)) |
{ |
fputc (j, stderr); |
break; |
} |
|
fputc ('\\', stderr); |
fprintf (stderr, "%o", j); |
|
switch(index_shared_string(arg->u.string,i+1)) |
{ |
case '0': case '1': case '2': case '3': |
case '4': case '5': case '6': case '7': |
case '8': case '9': |
fputc ('"', stderr); |
fputc ('"', stderr); |
} |
break; |
} |
} |
fputc ('"', stderr); |
if (i < arg->u.string->len) |
fprintf (stderr, "+[%ld]", (long) (arg->u.string->len - i)); |
break; |
} |
|
case T_FUNCTION: |
|
if(SUBTYPEOF(*arg) == FUNCTION_BUILTIN) |
fputs (arg->u.efun->name->str, stderr); |
else if(arg->u.object->prog) |
fputs (safe_idname_from_int(arg->u.object->prog, |
SUBTYPEOF(*arg)), stderr); |
else |
fputc ('0', stderr); |
break; |
|
case T_OBJECT: { |
struct program *p = arg->u.object->prog; |
if (p && p->num_linenumbers) { |
file = low_get_program_line_plain (p, &line, 0); |
fprintf (stderr, "object(%s:%ld)", file, (long)line); |
} |
else |
fputs ("object", stderr); |
break; |
} |
|
case T_PROGRAM: { |
struct program *p = arg->u.program; |
if (p->num_linenumbers) { |
file = low_get_program_line_plain (p, &line, 0); |
fprintf (stderr, "program(%s:%ld)", file, (long)line); |
} |
else |
fputs ("program", stderr); |
break; |
} |
|
case T_FLOAT: |
fprintf (stderr, "%f",(double) arg->u.float_number); |
break; |
|
case T_ARRAY: |
fprintf (stderr, "array[%ld]", (long) arg->u.array->size); |
break; |
|
case T_MULTISET: |
fprintf (stderr, "multiset[%ld]", (long) multiset_sizeof (arg->u.multiset)); |
break; |
|
case T_MAPPING: |
fprintf (stderr, "mapping[%ld]", (long) m_sizeof (arg->u.mapping)); |
break; |
|
default: |
fprintf (stderr, "<Unknown %d>", TYPEOF(*arg)); |
} |
|
if (i < args - 1) fputs (", ", stderr); |
} |
fputs (")\n", stderr); |
} |
else |
fputs ("frame with no references\n", stderr); |
} |
|
|
|
|
|
|
|
void gdb_backtraces() |
{ |
#ifdef PIKE_THREADS |
extern INT32 gdb_next_thread_state(INT32, struct thread_state **); |
INT32 i = 0; |
struct thread_state *ts = 0; |
while ((i = gdb_next_thread_state (i, &ts)), ts) { |
fprintf (stderr, "\nTHREAD_ID %p (swapped %s):\n", |
(void *)(ptrdiff_t)ts->id, ts->swapped ? "out" : "in"); |
gdb_backtrace (ts->id); |
} |
#else |
gdb_backtrace(); |
#endif |
} |
#endif |
|
PMOD_EXPORT void custom_check_stack(ptrdiff_t amount, const char *fmt, ...) |
{ |
if (low_stack_check(amount)) { |
va_list args; |
va_start(args, fmt); |
va_error(fmt, args); |
} |
} |
|
PMOD_EXPORT void low_cleanup_interpret(struct Pike_interpreter_struct *interpreter) |
{ |
#ifdef USE_MMAP_FOR_STACK |
if(!interpreter->evaluator_stack_malloced) |
{ |
munmap((char *)interpreter->evaluator_stack, |
Pike_stack_size*sizeof(struct svalue)); |
interpreter->evaluator_stack = 0; |
} |
if(!interpreter->mark_stack_malloced) |
{ |
munmap((char *)interpreter->mark_stack, |
Pike_stack_size*sizeof(struct svalue *)); |
interpreter->mark_stack = 0; |
} |
#endif |
|
if(interpreter->evaluator_stack) |
free((char *)interpreter->evaluator_stack); |
if(interpreter->mark_stack) |
free((char *)interpreter->mark_stack); |
|
interpreter->mark_stack = 0; |
interpreter->evaluator_stack = 0; |
interpreter->mark_stack_malloced = 0; |
interpreter->evaluator_stack_malloced = 0; |
|
interpreter->stack_pointer = 0; |
interpreter->mark_stack_pointer = 0; |
interpreter->frame_pointer = 0; |
} |
|
PMOD_EXPORT void cleanup_interpret(void) |
{ |
while(Pike_fp) |
POP_PIKE_FRAME(); |
|
reset_evaluator(); |
|
low_cleanup_interpret(&Pike_interpreter); |
} |
|
void really_clean_up_interpret(void) |
{ |
#ifdef DO_PIKE_CLEANUP |
#if 0 |
struct pike_frame_block *p; |
int e; |
for(p=pike_frame_blocks;p;p=p->next) |
for(e=0;e<128;e++) |
debug_malloc_dump_references( p->x + e); |
#endif |
free_callback_list (&evaluator_callbacks); |
free_all_pike_frame_blocks(); |
free_all_catch_context_blocks(); |
#endif |
} |
|
|