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interpreter.c
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interpreter.c
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/*
Copyright (C) 2001-2006, The Perl Foundation.
$Id$
=head1 NAME
src/interpreter.c - Parrot Interpreter
=head1 DESCRIPTION
The interpreter API handles running the operations.
The predereferenced code chunk is pre-initialized with the opcode
function pointers, addresses, or opnumbers of the C<prederef__>
opcode. This opcode then calls the C<do_prederef()> function, which then
fills in the real function, address or op number.
Since the C<prederef__> opcode returns the same C<pc_prederef> it was
passed, the runops loop will re-execute the same location, which will
then have the pointer to the real C<prederef> opfunc and C<prederef>
args.
Pointer arithmetic is used to determine the index into the bytecode
corresponding to the currect opcode. The bytecode and prederef arrays
have the same number of elements since there is a one-to-one mapping.
=head2 Functions
=over 4
=cut
*/
#include <assert.h>
#include "parrot/parrot.h"
#include "interp_guts.h"
#include "parrot/oplib/core_ops.h"
#include "parrot/oplib/core_ops_switch.h"
#include "parrot/oplib/ops.h"
#include "runops_cores.h"
#if JIT_CAPABLE
# include "parrot/exec.h"
# include "jit.h"
#endif
#ifdef HAVE_COMPUTED_GOTO
# include "parrot/oplib/core_ops_cg.h"
# include "parrot/oplib/core_ops_cgp.h"
#endif
#include "parrot/dynext.h"
void Parrot_setup_event_func_ptrs(Parrot_Interp interpreter);
/*
=item C<static void
prederef_args(void **pc_prederef, Interp *interpreter,
opcode_t *pc, op_info_t *opinfo)>
Called from C<do_prederef()> to deal with any arguments.
C<pc_prederef> is the current opcode.
=cut
*/
static void
prederef_args(void **pc_prederef, Interp *interpreter,
opcode_t *pc, op_info_t *opinfo)
{
struct PackFile_ConstTable * const_table
= interpreter->code->const_table;
int i, n, m, regs_n, regs_i, regs_p, regs_s;
PMC *sig = NULL;
regs_n = CONTEXT(interpreter->ctx)->n_regs_used[REGNO_NUM];
regs_i = CONTEXT(interpreter->ctx)->n_regs_used[REGNO_INT];
regs_p = CONTEXT(interpreter->ctx)->n_regs_used[REGNO_PMC];
regs_s = CONTEXT(interpreter->ctx)->n_regs_used[REGNO_STR];
/* prederef var part too */
n = m = opinfo->op_count;
ADD_OP_VAR_PART(interpreter, interpreter->code, pc, n);
for (i = 1; i < n; i++) {
opcode_t arg = pc[i];
int type;
if (i >= m) {
sig = (PMC*) pc_prederef[1];
type = SIG_ITEM(sig, i - m);
type &= (PARROT_ARG_TYPE_MASK | PARROT_ARG_CONSTANT);
}
else
type = opinfo->types[i - 1];
switch (type) {
case PARROT_ARG_KI:
case PARROT_ARG_I:
if (arg < 0 || arg >= regs_i)
internal_exception(INTERP_ERROR, "Illegal register number");
pc_prederef[i] = (void *)REG_OFFS_INT(arg);
break;
case PARROT_ARG_N:
if (arg < 0 || arg >= regs_n)
internal_exception(INTERP_ERROR, "Illegal register number");
pc_prederef[i] = (void *)REG_OFFS_NUM(arg);
break;
case PARROT_ARG_K:
case PARROT_ARG_P:
if (arg < 0 || arg >= regs_p)
internal_exception(INTERP_ERROR, "Illegal register number");
pc_prederef[i] = (void *)REG_OFFS_PMC(arg);
break;
case PARROT_ARG_S:
if (arg < 0 || arg >= regs_s)
internal_exception(INTERP_ERROR, "Illegal register number");
pc_prederef[i] = (void *)REG_OFFS_STR(arg);
break;
case PARROT_ARG_KIC:
case PARROT_ARG_IC:
pc_prederef[i] = (void *)pc[i];
break;
case PARROT_ARG_NC:
if (arg < 0 || arg >= const_table->const_count)
internal_exception(INTERP_ERROR, "Illegal constant number");
pc_prederef[i] = (void *) &const_table->constants[arg]->u.number;
break;
case PARROT_ARG_SC:
if (arg < 0 || arg >= const_table->const_count)
internal_exception(INTERP_ERROR, "Illegal constant number");
pc_prederef[i] = (void *)const_table->constants[arg]->u.string;
break;
case PARROT_ARG_PC:
case PARROT_ARG_KC:
if (arg < 0 || arg >= const_table->const_count)
internal_exception(INTERP_ERROR, "Illegal constant number");
pc_prederef[i] = (void *)const_table->constants[arg]->u.key;
break;
default:
internal_exception(ARG_OP_NOT_HANDLED,
"Unhandled argtype 0x%x\n", type);
break;
}
}
}
/*
=item C<void
do_prederef(void **pc_prederef, Parrot_Interp interpreter, int type)>
This is called from within the run cores to predereference the current
opcode.
C<pc_prederef> is the current opcode, and C<type> is the run core type.
=cut
*/
void
do_prederef(void **pc_prederef, Parrot_Interp interpreter, int type)
{
size_t offset = pc_prederef - interpreter->code->prederef.code;
opcode_t *pc = ((opcode_t *)interpreter->code->base.data) + offset;
op_func_t *prederef_op_func = interpreter->op_lib->op_func_table;
op_info_t *opinfo;
size_t n;
if (*pc < 0 || *pc >= (opcode_t)interpreter->op_count)
internal_exception(INTERP_ERROR, "Illegal opcode");
opinfo = &interpreter->op_info_table[*pc];
/* first arguments - PIC needs it */
prederef_args(pc_prederef, interpreter, pc, opinfo);
switch (type) {
case PARROT_SWITCH_CORE:
case PARROT_SWITCH_JIT_CORE:
case PARROT_CGP_CORE:
case PARROT_CGP_JIT_CORE:
parrot_PIC_prederef(interpreter, *pc, pc_prederef, type);
break;
default:
internal_exception(1, "Tried to prederef wrong core");
break;
}
/*
* now remember backward branches, invoke and similar opcodes
*/
n = opinfo->op_count;
if (((opinfo->jump & PARROT_JUMP_RELATIVE) &&
opinfo->types[n - 2] == PARROT_ARG_IC &&
pc[n - 1] < 0) || /* relative backward branch */
(opinfo->jump & PARROT_JUMP_ADDRESS)) {
Prederef *pi = &interpreter->code->prederef;
/*
* first time prederef.branches == NULL:
* estimate size to 1/16th of opcodes
*/
if (!pi->branches) {
size_t nb = interpreter->code->base.size / 16;
if (nb < 8)
nb = (size_t)8;
pi->branches = mem_sys_allocate( sizeof(Prederef_branch) * nb);
pi->n_allocated = nb;
pi->n_branches = 0;
}
else if (pi->n_branches >= pi->n_allocated) {
pi->n_allocated = (size_t) (pi->n_allocated * 1.5);
pi->branches = mem_sys_realloc( pi->branches,
sizeof(Prederef_branch) * pi->n_allocated);
}
pi->branches[pi->n_branches].offs = offset;
pi->branches[pi->n_branches].op = *pc_prederef;
++pi->n_branches;
}
}
/*
=item C<static void
turn_ev_check(Parrot_Interp interpreter, int on)>
Turn on or off event checking for prederefed cores.
Fills in the C<event_checker> opcode, or restores original op in all
branch locations of the opcode stream.
Note that when C<on> is true, this is being called from the event
handler thread.
=cut
*/
static void
turn_ev_check(Parrot_Interp interpreter, int on)
{
Prederef *pi = &interpreter->code->prederef;
size_t i, offs;
if (!pi->branches)
return;
for (i = 0; i < pi->n_branches; ++i) {
offs = pi->branches[i].offs;
if (on) {
interpreter->code->prederef.code[offs] =
((void **)interpreter->op_lib->op_func_table)
[CORE_OPS_check_events__];
}
else
interpreter->code->prederef.code[offs] = pi->branches[i].op;
}
}
/*
=item C<static oplib_init_f
get_op_lib_init(int core_op, int which, PMC *lib)>
Returns an opcode's library C<op_lib> init function.
C<core_op> indicates whether the opcode represents a core Parrot operation.
C<which> is the run core type.
For dynamic oplibs C<core_op> will be 0 and C<lib> will be a
C<ParrotLibrary> PMC.
=cut
*/
static oplib_init_f
get_op_lib_init(int core_op, int which, PMC *lib)
{
oplib_init_f init_func = (oplib_init_f)NULL;
if (core_op) {
switch (which) {
case PARROT_SWITCH_CORE:
case PARROT_SWITCH_JIT_CORE:
init_func = PARROT_CORE_SWITCH_OPLIB_INIT;
break;
#ifdef HAVE_COMPUTED_GOTO
case PARROT_CGP_CORE:
case PARROT_CGP_JIT_CORE:
init_func = PARROT_CORE_CGP_OPLIB_INIT;
break;
case PARROT_CGOTO_CORE:
init_func = PARROT_CORE_CG_OPLIB_INIT;
break;
#endif
case PARROT_EXEC_CORE: /* normal func core */
case PARROT_JIT_CORE: /* normal func core */
case PARROT_SLOW_CORE: /* normal func core */
case PARROT_FAST_CORE: /* normal func core */
init_func = PARROT_CORE_OPLIB_INIT;
break;
}
if (!init_func)
internal_exception(1, "Couldn't find init_func for core %d", which);
return init_func;
}
return (oplib_init_f) D2FPTR(PMC_struct_val(lib));
}
/*
=item C<static void
load_prederef(Interp *interpreter, int which)>
C<< interpreter->op_lib >> = prederefed oplib.
=cut
*/
static void
load_prederef(Interp *interpreter, int which)
{
oplib_init_f init_func = get_op_lib_init(1, which, NULL);
int (*get_op)(const char * name, int full);
get_op = interpreter->op_lib->op_code;
interpreter->op_lib = init_func(1);
/* preserve the get_op function */
interpreter->op_lib->op_code = get_op;
if (interpreter->op_lib->op_count != interpreter->op_count)
internal_exception(PREDEREF_LOAD_ERROR,
"Illegal op count (%d) in prederef oplib\n",
(int)interpreter->op_lib->op_count);
}
/*
=item C<static void
init_prederef(Interp *interpreter, int which)>
Initialize: load prederef C<func_table>, file prederef.code.
=cut
*/
static void
init_prederef(Interp *interpreter, int which)
{
load_prederef(interpreter, which);
if (!interpreter->code->prederef.code) {
size_t N = interpreter->code->base.size;
opcode_t *pc = interpreter->code->base.data;
size_t i, n, n_pics;
void *pred_func;
op_info_t *opinfo;
/* Parrot_memalign_if_possible in OpenBSD allocates 256 if you ask for 312
-- Need to verify this, it may have been a bug elsewhere. If it works now,
we can remove the mem_sys_allocate_zeroed line below. */
#if 0
void **temp = (void **)mem_sys_allocate_zeroed(N * sizeof(void *));
#else
void **temp = (void **)Parrot_memalign_if_possible(256,
N * sizeof(void *));
#endif
/*
* calc and remember pred_offset
*/
CONTEXT(interpreter->ctx)->pred_offset = pc - (opcode_t*)temp;
/* fill with the prederef__ opcode function */
if (which == PARROT_SWITCH_CORE || which == PARROT_SWITCH_JIT_CORE )
pred_func = (void*) CORE_OPS_prederef__;
else
pred_func = ((void **)
interpreter->op_lib->op_func_table)[CORE_OPS_prederef__];
for (i = n_pics = 0; i < N; ) {
opinfo = &interpreter->op_info_table[*pc];
temp[i] = pred_func;
n = opinfo->op_count;
ADD_OP_VAR_PART(interpreter, interpreter->code, pc, n);
/* count ops that need a PIC */
if (parrot_PIC_op_is_cached(interpreter, *pc))
n_pics++;
pc += n;
i += n;
}
interpreter->code->prederef.code = temp;
/* allocate pic store */
if (n_pics) {
/* pic_index is starting from 1 */
parrot_PIC_alloc_store(interpreter, interpreter->code, n_pics + 1);
}
}
}
/*
=item C<static void
stop_prederef(Interp *interpreter)>
Restore the interpreter's op function tables to their initial state.
Also the event function pointers are re-created. This is only necessary
for run-core changes, but we don't know the old run core.
=cut
*/
static void
stop_prederef(Interp *interpreter)
{
interpreter->op_func_table = PARROT_CORE_OPLIB_INIT(1)->op_func_table;
if (interpreter->evc_func_table) {
mem_sys_free(interpreter->evc_func_table);
interpreter->evc_func_table = NULL;
}
Parrot_setup_event_func_ptrs(interpreter);
}
#if EXEC_CAPABLE
/*
=item C<void
exec_init_prederef(Interp *interpreter, void *prederef_arena)>
C<< interpreter->op_lib >> = prederefed oplib
The "normal" C<op_lib> has a copy in the interpreter structure - but get
the C<op_code> lookup function from standard core prederef has no
C<op_info_table>
=cut
*/
void
exec_init_prederef(Interp *interpreter, void *prederef_arena)
{
load_prederef(interpreter, PARROT_CGP_CORE);
if (!interpreter->code->prederef.code) {
size_t N = interpreter->code->base.size;
void **temp = prederef_arena;
opcode_t *pc = interpreter->code->base.data;
interpreter->code->prederef.code = temp;
/* TODO */
}
}
#endif
/*
=item C<void *
init_jit(Interp *interpreter, opcode_t *pc)>
Initializes JIT function for the specified opcode and returns it.
=cut
*/
void *
init_jit(Interp *interpreter, opcode_t *pc)
{
#if JIT_CAPABLE
opcode_t *code_start;
UINTVAL code_size; /* in opcodes */
opcode_t *code_end;
Parrot_jit_info_t *jit_info;
if (interpreter->code->jit_info)
return ((Parrot_jit_info_t *)interpreter->code->jit_info)->arena.start;
code_start = interpreter->code->base.data;
code_size = interpreter->code->base.size;
code_end = code_start + code_size;
# if defined HAVE_COMPUTED_GOTO && PARROT_I386_JIT_CGP
# ifdef __GNUC__
# ifdef PARROT_I386
init_prederef(interpreter, PARROT_CGP_CORE);
# endif
# endif
# endif
interpreter->code->jit_info =
jit_info = parrot_build_asm(interpreter, code_start, code_end,
NULL, JIT_CODE_FILE);
return jit_info->arena.start;
#else
return NULL;
#endif
}
/*
=item C<void
prepare_for_run(Parrot_Interp interpreter)>
Prepares to run the interpreter's run core.
=cut
*/
void
prepare_for_run(Parrot_Interp interpreter)
{
switch (interpreter->run_core) {
case PARROT_JIT_CORE:
(void) init_jit(interpreter, interpreter->code->base.data);
break;
case PARROT_SWITCH_CORE:
case PARROT_SWITCH_JIT_CORE:
case PARROT_CGP_CORE:
case PARROT_CGP_JIT_CORE:
init_prederef(interpreter, interpreter->run_core);
break;
default:
break;
}
}
#ifdef PARROT_EXEC_OS_AIX
extern void* aix_get_toc( );
#endif
/*
=item C<static opcode_t *
runops_jit(Interp *interpreter, opcode_t *pc)>
Runs the JIT code for the specified opcode.
=cut
*/
static opcode_t *
runops_jit(Interp *interpreter, opcode_t *pc)
{
#if JIT_CAPABLE
# ifdef PARROT_EXEC_OS_AIX
/* AIX calling convention requires that function-call-by-ptr be made
through the following struct: */
struct { jit_f functPtr; void *toc; void *env; } ptrgl_t;
ptrgl_t.functPtr = (jit_f) D2FPTR(init_jit(interpreter, pc));
ptrgl_t.env = NULL;
/* r2 (TOC) needs to point back here so we can return from non-JIT
functions */
ptrgl_t.toc = aix_get_toc( );
((jit_f) D2FPTR(&ptrgl_t)) (interpreter, pc);
# else
jit_f jit_code = (jit_f) D2FPTR(init_jit(interpreter, pc));
(jit_code) (interpreter, pc);
# endif
#endif
return NULL;
}
/*
=item C<static opcode_t *
runops_exec(Interp *interpreter, opcode_t *pc)>
Runs the native executable version of the specified opcode.
=cut
*/
static opcode_t *
runops_exec(Interp *interpreter, opcode_t *pc)
{
#if EXEC_CAPABLE
opcode_t *code_start;
UINTVAL code_size; /* in opcodes */
opcode_t *code_end;
extern int Parrot_exec_run;
code_start = interpreter->code->base.data;
code_size = interpreter->code->base.size;
code_end = code_start + code_size;
# if defined HAVE_COMPUTED_GOTO && defined USE_CGP
# ifdef __GNUC__
# ifdef PARROT_I386
init_prederef(interpreter, PARROT_CGP_CORE);
# endif
# endif
# endif
if (Parrot_exec_run == 2) {
Parrot_exec_run = 0;
Interp_core_SET(interpreter, PARROT_JIT_CORE);
runops_jit(interpreter, pc);
Interp_core_SET(interpreter, PARROT_EXEC_CORE);
}
else if (Parrot_exec_run == 1) {
Parrot_exec(interpreter, pc, code_start, code_end);
}
else
run_native(interpreter, pc, code_start);
#endif
return NULL;
}
/*
=item C<static opcode_t *
runops_cgp(Interp *interpreter, opcode_t *pc)>
Runs the C C<goto>, predereferenced core.
=cut
*/
static opcode_t *
runops_cgp(Interp *interpreter, opcode_t *pc)
{
#ifdef HAVE_COMPUTED_GOTO
opcode_t *code_start = (opcode_t *)interpreter->code->base.data;
void **pc_prederef;
init_prederef(interpreter, PARROT_CGP_CORE);
pc_prederef = interpreter->code->prederef.code + (pc - code_start);
pc = (opcode_t*) cgp_core(pc_prederef, interpreter);
return pc;
#else
PIO_eprintf(interpreter,
"Computed goto unavailable in this configuration.\n");
Parrot_exit(interpreter, 1);
return NULL;
#endif
}
/*
=item C<static opcode_t *
runops_switch(Interp *interpreter, opcode_t *pc)>
Runs the C<switch> core.
=cut
*/
static opcode_t *
runops_switch(Interp *interpreter, opcode_t *pc)
{
opcode_t *code_start = (opcode_t *)interpreter->code->base.data;
void **pc_prederef;
init_prederef(interpreter, PARROT_SWITCH_CORE);
pc_prederef = interpreter->code->prederef.code + (pc - code_start);
pc = (opcode_t*) switch_core(pc_prederef, interpreter);
return pc;
}
/*
=item C<void
runops_int(Interp *interpreter, size_t offset)>
Run parrot operations of loaded code segment until an end opcode is
reached run core is selected depending on the C<Interp_flags> when a
C<restart> opcode is encountered a different core my be selected and
evaluation of opcode continues.
=cut
*/
void
runops_int(Interp *interpreter, size_t offset)
{
int lo_var_ptr;
opcode_t *(*core) (Interp *, opcode_t *) =
(opcode_t *(*) (Interp *, opcode_t *)) 0;
if (!interpreter->lo_var_ptr) {
/*
* if we are entering the run loop the first time
*/
interpreter->lo_var_ptr = (void *)&lo_var_ptr;
}
/*
* setup event function ptrs
*/
if (!interpreter->save_func_table) {
Parrot_setup_event_func_ptrs(interpreter);
}
interpreter->resume_offset = offset;
interpreter->resume_flag |= RESUME_RESTART;
while (interpreter->resume_flag & RESUME_RESTART) {
opcode_t *pc = (opcode_t *)
interpreter->code->base.data + interpreter->resume_offset;
interpreter->resume_offset = 0;
interpreter->resume_flag &= ~(RESUME_RESTART | RESUME_INITIAL);
switch (interpreter->run_core) {
case PARROT_SLOW_CORE:
core = runops_slow_core;
if (Interp_flags_TEST(interpreter, PARROT_PROFILE_FLAG)) {
core = runops_profile_core;
if (interpreter->profile == NULL) {
interpreter->profile = (RunProfile *)
mem_sys_allocate_zeroed(sizeof(RunProfile));
interpreter->profile->data = (ProfData *)
mem_sys_allocate_zeroed((interpreter->op_count +
PARROT_PROF_EXTRA) * sizeof(ProfData));
}
}
break;
case PARROT_FAST_CORE:
core = runops_fast_core;
break;
case PARROT_CGOTO_CORE:
#ifdef HAVE_COMPUTED_GOTO
core = runops_cgoto_core;
#else
internal_exception(1, "Error: PARROT_CGOTO_CORE not available");
#endif
break;
case PARROT_CGP_CORE:
case PARROT_CGP_JIT_CORE:
#ifdef HAVE_COMPUTED_GOTO
core = runops_cgp;
#else
internal_exception(1, "Error: PARROT_CGP_CORE not available");
#endif
break;
case PARROT_SWITCH_CORE:
case PARROT_SWITCH_JIT_CORE:
core = runops_switch;
break;
case PARROT_JIT_CORE:
#if !JIT_CAPABLE
internal_exception(JIT_UNAVAILABLE,
"Error: PARROT_JIT_FLAG is set, "
"but interpreter is not JIT_CAPABLE!\n");
#endif
core = runops_jit;
break;
case PARROT_EXEC_CORE:
#if !EXEC_CAPABLE
internal_exception(EXEC_UNAVAILABLE,
"Error: PARROT_EXEC_FLAG is set, "
"but interpreter is not EXEC_CAPABLE!\n");
#endif
core = runops_exec;
break;
default:
internal_exception(UNIMPLEMENTED,
"ambigious runcore switch used");
break;
}
/* run it finally */
core(interpreter, pc);
/* if we have fallen out with resume and we were running CGOTO, set
* the stacktop again to a sane value, so that restarting the runloop
* is ok.
*/
if (interpreter->resume_flag & RESUME_RESTART) {
if ((int)interpreter->resume_offset < 0)
internal_exception(1, "branch_cs: illegal resume offset");
stop_prederef(interpreter);
}
}
}
/*
=item C<static void
Parrot_setup_event_func_ptrs(Parrot_Interp interpreter)>
Setup a C<func_table> containing pointers (or addresses) of the
C<check_event__> opcode.
TODO: Free it at destroy. Handle run-core changes.
=cut
*/
void
Parrot_setup_event_func_ptrs(Parrot_Interp interpreter)
{
size_t i, n = interpreter->op_count;
oplib_init_f init_func = get_op_lib_init(1, interpreter->run_core, NULL);
op_lib_t *lib = init_func(1);
/*
* remember op_func_table
*/
interpreter->save_func_table = lib->op_func_table;
if (!lib->op_func_table)
return;
/* function or CG core - prepare func_table */
if (!interpreter->evc_func_table) {
interpreter->evc_func_table = mem_sys_allocate(sizeof(void *) * n);
for (i = 0; i < n; ++i)
interpreter->evc_func_table[i] = (op_func_t)
D2FPTR(((void**)lib->op_func_table)[CORE_OPS_check_events__]);
}
}
/*
=back
=head2 Dynamic Loading Functions
=over 4
=cut
*/
static void dynop_register_xx(Parrot_Interp, PMC*, size_t, size_t,
oplib_init_f init_func);
static void dynop_register_switch(Parrot_Interp, PMC*, size_t, size_t);
/*
=item C<void
dynop_register(Parrot_Interp interpreter, PMC* lib_pmc)>
Register a dynamic oplib.
=cut
*/
void
dynop_register(Parrot_Interp interpreter, PMC* lib_pmc)
{
op_lib_t *lib, *core;
oplib_init_f init_func;
op_func_t *new_func_table, *new_evc_func_table;
op_info_t *new_info_table;
size_t i, n_old, n_new, n_tot;
if (n_interpreters > 1) {
/* This is not supported because oplibs are always shared.
* If we mem_sys_reallocate() the op_func_table while another
* interpreter is running using that exact op_func_table,
* this will cause problems
* Also, the mapping from op name to op number is global even for
* dynops (!). The mapping is done by get_op in core_ops.c (even for
* dynops) and uses a global hash as a cache and relies on modifications
* to the static-scoped core_op_lib data structure to see dynops.
*/
internal_exception(1, "loading a new dynoplib while more than "
"one thread is running is not supported.");
}
if (!interpreter->all_op_libs)
interpreter->all_op_libs = mem_sys_allocate(
sizeof(op_lib_t *) * (interpreter->n_libs + 1));
else
interpreter->all_op_libs = mem_sys_realloc(interpreter->all_op_libs,
sizeof(op_lib_t *) * (interpreter->n_libs + 1));
init_func = get_op_lib_init(0, 0, lib_pmc);
lib = init_func(1);
interpreter->all_op_libs[interpreter->n_libs++] = lib;
/*
* if we are registering an op_lib variant, called from below
* the base names of this lib and the previous one are the same
*/
if (interpreter->n_libs >= 2 &&
!strcmp(interpreter->all_op_libs[interpreter->n_libs-2]->name,
lib->name)) {
/* registering is handled below */
return;
}
/*
* when called from yyparse, we have to set up the evc_func_table
*/
Parrot_setup_event_func_ptrs(interpreter);
n_old = interpreter->op_count;
n_new = lib->op_count;
n_tot = n_old + n_new;
core = PARROT_CORE_OPLIB_INIT(1);
assert(interpreter->op_count == core->op_count);
new_evc_func_table = mem__sys_realloc(interpreter->evc_func_table,
sizeof (void *) * n_tot);
if (core->flags & OP_FUNC_IS_ALLOCATED) {
new_func_table = mem_sys_realloc(core->op_func_table,
sizeof (void *) * n_tot);
new_info_table = mem_sys_realloc(core->op_info_table,
sizeof (op_info_t) * n_tot);
}
else {
/*
* allocate new op_func and info tables
*/
new_func_table = mem_sys_allocate(sizeof (void *) * n_tot);
new_info_table = mem_sys_allocate(sizeof (op_info_t) * n_tot);
/* copy old */
for (i = 0; i < n_old; ++i) {
new_func_table[i] = interpreter->op_func_table[i];
new_info_table[i] = interpreter->op_info_table[i];
}
}
/* add new */
for (i = n_old; i < n_tot; ++i) {
new_func_table[i] = ((op_func_t*)lib->op_func_table)[i - n_old];
new_info_table[i] = lib->op_info_table[i - n_old];
/*
* fill new ops of event checker func table
* if we are running a different core, entries are
* changed below
*/
new_evc_func_table[i] =
interpreter->op_func_table[CORE_OPS_check_events__];
}
interpreter->evc_func_table = new_evc_func_table;
interpreter->save_func_table = new_func_table;
/*
* deinit core, so that it gets rehashed
*/
(void) PARROT_CORE_OPLIB_INIT(0);
/* set table */
core->op_func_table = interpreter->op_func_table = new_func_table;
core->op_info_table = interpreter->op_info_table = new_info_table;
core->op_count = interpreter->op_count = n_tot;
core->flags = OP_FUNC_IS_ALLOCATED | OP_INFO_IS_ALLOCATED;
/* done for plain core */
#if defined HAVE_COMPUTED_GOTO
dynop_register_xx(interpreter, lib_pmc, n_old, n_new,
PARROT_CORE_CGP_OPLIB_INIT);
dynop_register_xx(interpreter, lib_pmc, n_old, n_new,
PARROT_CORE_CG_OPLIB_INIT);
#endif
dynop_register_switch(interpreter, lib_pmc, n_old, n_new);
}
/*
=item C<static void
dynop_register_xx(Parrot_Interp interpreter, PMC* lib_pmc,
size_t n_old, size_t n_new, oplib_init_f init_func)>
Register C<op_lib> with other cores.
=cut
*/
static void
dynop_register_xx(Parrot_Interp interpreter, PMC* lib_pmc,
size_t n_old, size_t n_new, oplib_init_f init_func)
{
op_lib_t *cg_lib, *new_lib;
void **ops_addr = NULL;
size_t i, n_tot;
#if 0
/* related to CG and CGP ops issue below */
STRING *op_variant;
#endif
oplib_init_f new_init_func;
PMC *lib_variant;
n_tot = n_old + n_new;
cg_lib = init_func(1);
if (cg_lib->flags & OP_FUNC_IS_ALLOCATED) {
ops_addr = mem_sys_realloc(cg_lib->op_func_table,
n_tot * sizeof(void *));
}
else {
ops_addr = mem_sys_allocate(n_tot * sizeof(void *));
cg_lib->flags = OP_FUNC_IS_ALLOCATED;
for (i = 0; i < n_old; ++i)
ops_addr[i] = ((void **)cg_lib->op_func_table)[i];
}
/*