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beam_emu.c
6198 lines (5529 loc) · 153 KB
/
beam_emu.c
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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1996-2009. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stddef.h> /* offsetof() */
#include "sys.h"
#include "erl_vm.h"
#include "global.h"
#include "erl_process.h"
#include "erl_nmgc.h"
#include "error.h"
#include "bif.h"
#include "big.h"
#include "beam_load.h"
#include "erl_binary.h"
#include "erl_bits.h"
#include "dist.h"
#include "beam_bp.h"
#include "beam_catches.h"
#ifdef HIPE
#include "hipe_mode_switch.h"
#include "hipe_bif1.h"
#endif
/* #define HARDDEBUG 1 */
#if defined(NO_JUMP_TABLE)
# define OpCase(OpCode) case op_##OpCode: lb_##OpCode
# define CountCase(OpCode) case op_count_##OpCode
# define OpCode(OpCode) ((Uint*)op_##OpCode)
# define Goto(Rel) {Go = (int)(Rel); goto emulator_loop;}
# define LabelAddr(Addr) &&##Addr
#else
# define OpCase(OpCode) lb_##OpCode
# define CountCase(OpCode) lb_count_##OpCode
# define Goto(Rel) goto *(Rel)
# define LabelAddr(Label) &&Label
# define OpCode(OpCode) (&&lb_##OpCode)
#endif
#ifdef ERTS_ENABLE_LOCK_CHECK
# ifdef ERTS_SMP
# define PROCESS_MAIN_CHK_LOCKS(P) \
do { \
if ((P)) { \
erts_pix_lock_t *pix_lock__ = ERTS_PIX2PIXLOCK(internal_pid_index((P)->id));\
erts_proc_lc_chk_only_proc_main((P)); \
erts_pix_lock(pix_lock__); \
ASSERT(0 < (P)->lock.refc && (P)->lock.refc < erts_no_schedulers*5);\
erts_pix_unlock(pix_lock__); \
} \
else \
erts_lc_check_exact(NULL, 0); \
ERTS_SMP_LC_ASSERT(!ERTS_LC_IS_BLOCKING); \
} while (0)
# define ERTS_SMP_REQ_PROC_MAIN_LOCK(P) \
if ((P)) erts_proc_lc_require_lock((P), ERTS_PROC_LOCK_MAIN)
# define ERTS_SMP_UNREQ_PROC_MAIN_LOCK(P) \
if ((P)) erts_proc_lc_unrequire_lock((P), ERTS_PROC_LOCK_MAIN)
# else
# define ERTS_SMP_REQ_PROC_MAIN_LOCK(P)
# define ERTS_SMP_UNREQ_PROC_MAIN_LOCK(P)
# define PROCESS_MAIN_CHK_LOCKS(P) erts_lc_check_exact(NULL, 0)
# endif
#else
# define PROCESS_MAIN_CHK_LOCKS(P)
# define ERTS_SMP_REQ_PROC_MAIN_LOCK(P)
# define ERTS_SMP_UNREQ_PROC_MAIN_LOCK(P)
#endif
/*
* Define macros for deep checking of terms.
*/
#if defined(HARDDEBUG)
# define CHECK_TERM(T) size_object(T)
# define CHECK_ARGS(PC) \
do { \
int i_; \
int Arity_ = PC[-1]; \
if (Arity_ > 0) { \
CHECK_TERM(r(0)); \
} \
for (i_ = 1; i_ < Arity_; i_++) { \
CHECK_TERM(x(i_)); \
} \
} while (0)
#else
# define CHECK_TERM(T) ASSERT(!is_CP(T))
# define CHECK_ARGS(T)
#endif
#ifndef MAX
#define MAX(x, y) (((x) > (y)) ? (x) : (y))
#endif
#define GET_BIF_ADDRESS(p) ((BifFunction) (((Export *) p)->code[4]))
/*
* We reuse some of fields in the save area in the process structure.
* This is safe to do, since this space is only activly used when
* the process is switched out.
*/
#define REDS_IN(p) ((p)->def_arg_reg[5])
/*
* Add a byte offset to a pointer to Eterm. This is useful when the
* the loader has precalculated a byte offset.
*/
#define ADD_BYTE_OFFSET(ptr, offset) \
((Eterm *) (((unsigned char *)ptr) + (offset)))
/* We don't check the range if an ordinary switch is used */
#ifdef NO_JUMP_TABLE
#define VALID_INSTR(IP) (0 <= (int)(IP) && ((int)(IP) < (NUMBER_OF_OPCODES*2+10)))
#else
#define VALID_INSTR(IP) \
((Sint)LabelAddr(emulator_loop) <= (Sint)(IP) && \
(Sint)(IP) < (Sint)LabelAddr(end_emulator_loop))
#endif /* NO_JUMP_TABLE */
#define SET_CP(p, ip) \
ASSERT(VALID_INSTR(*(ip))); \
(p)->cp = (ip)
#define SET_I(ip) \
ASSERT(VALID_INSTR(* (Eterm *)(ip))); \
I = (ip)
#define FetchArgs(S1, S2) tmp_arg1 = (S1); tmp_arg2 = (S2)
/*
* Store a result into a register given a destination descriptor.
*/
#define StoreResult(Result, DestDesc) \
do { \
Eterm stb_reg; \
stb_reg = (DestDesc); \
CHECK_TERM(Result); \
switch (beam_reg_tag(stb_reg)) { \
case R_REG_DEF: \
r(0) = (Result); break; \
case X_REG_DEF: \
xb(x_reg_offset(stb_reg)) = (Result); break; \
default: \
yb(y_reg_offset(stb_reg)) = (Result); break; \
} \
} while (0)
#define StoreSimpleDest(Src, Dest) Dest = (Src)
/*
* Store a result into a register and execute the next instruction.
* Dst points to the word with a destination descriptor, which MUST
* be just before the next instruction.
*/
#define StoreBifResult(Dst, Result) \
do { \
Eterm* stb_next; \
Eterm stb_reg; \
stb_reg = Arg(Dst); \
I += (Dst) + 2; \
stb_next = (Eterm *) *I; \
CHECK_TERM(Result); \
switch (beam_reg_tag(stb_reg)) { \
case R_REG_DEF: \
r(0) = (Result); Goto(stb_next); \
case X_REG_DEF: \
xb(x_reg_offset(stb_reg)) = (Result); Goto(stb_next); \
default: \
yb(y_reg_offset(stb_reg)) = (Result); Goto(stb_next); \
} \
} while (0)
#define ClauseFail() goto lb_jump_f
#define SAVE_CP(X) \
do { \
*(X) = make_cp(c_p->cp); \
c_p->cp = 0; \
} while(0)
#define RESTORE_CP(X) SET_CP(c_p, cp_val(*(X)))
#define ISCATCHEND(instr) ((Eterm *) *(instr) == OpCode(catch_end_y))
/*
* Special Beam instructions.
*/
Eterm beam_apply[2];
Eterm beam_exit[1];
Eterm beam_continue_exit[1];
Eterm* em_call_error_handler;
Eterm* em_apply_bif;
Eterm* em_call_traced_function;
/* NOTE These should be the only variables containing trace instructions.
** Sometimes tests are form the instruction value, and sometimes
** for the refering variable (one of these), and rouge references
** will most likely cause chaos.
*/
Eterm beam_return_to_trace[1]; /* OpCode(i_return_to_trace) */
Eterm beam_return_trace[1]; /* OpCode(i_return_trace) */
Eterm beam_exception_trace[1]; /* UGLY also OpCode(i_return_trace) */
/*
* All Beam instructions in numerical order.
*/
#ifndef NO_JUMP_TABLE
void** beam_ops;
#endif
#ifndef ERTS_SMP /* Not supported with smp emulator */
extern int count_instructions;
#endif
#if defined(HYBRID)
#define SWAPIN \
g_htop = global_htop; \
g_hend = global_hend; \
HTOP = HEAP_TOP(c_p); \
E = c_p->stop
#define SWAPOUT \
global_htop = g_htop; \
global_hend = g_hend; \
HEAP_TOP(c_p) = HTOP; \
c_p->stop = E
#else
#define SWAPIN \
HTOP = HEAP_TOP(c_p); \
E = c_p->stop
#define SWAPOUT \
HEAP_TOP(c_p) = HTOP; \
c_p->stop = E
/*
* Use LIGHT_SWAPOUT when the called function
* will call HeapOnlyAlloc() (and never HAlloc()).
*/
#ifdef DEBUG
# /* The stack pointer is used in an assertion. */
# define LIGHT_SWAPOUT SWAPOUT
#else
# define LIGHT_SWAPOUT HEAP_TOP(c_p) = HTOP
#endif
/*
* Use LIGHT_SWAPIN when we know that c_p->stop cannot
* have been updated (i.e. if there cannot have been
* a garbage-collection).
*/
#define LIGHT_SWAPIN HTOP = HEAP_TOP(c_p)
#endif
#define PRE_BIF_SWAPOUT(P) \
HEAP_TOP((P)) = HTOP; \
(P)->stop = E; \
PROCESS_MAIN_CHK_LOCKS((P)); \
ERTS_SMP_UNREQ_PROC_MAIN_LOCK((P))
#if defined(HYBRID)
# define POST_BIF_GC_SWAPIN_0(_p, _res) \
if (((_p)->mbuf) || (MSO(_p).overhead >= BIN_VHEAP_SZ(_p)) ) { \
_res = erts_gc_after_bif_call((_p), (_res), NULL, 0); \
} \
SWAPIN
# define POST_BIF_GC_SWAPIN(_p, _res, _regs, _arity) \
if (((_p)->mbuf) || (MSO(_p).overhead >= BIN_VHEAP_SZ(_p)) ) { \
_regs[0] = r(0); \
_res = erts_gc_after_bif_call((_p), (_res), _regs, (_arity)); \
r(0) = _regs[0]; \
} \
SWAPIN
#else
# define POST_BIF_GC_SWAPIN_0(_p, _res) \
ERTS_SMP_REQ_PROC_MAIN_LOCK((_p)); \
PROCESS_MAIN_CHK_LOCKS((_p)); \
if (((_p)->mbuf) || (MSO(_p).overhead >= BIN_VHEAP_SZ(_p)) ) { \
_res = erts_gc_after_bif_call((_p), (_res), NULL, 0); \
E = (_p)->stop; \
} \
HTOP = HEAP_TOP((_p))
# define POST_BIF_GC_SWAPIN(_p, _res, _regs, _arity) \
ERTS_SMP_REQ_PROC_MAIN_LOCK((_p)); \
PROCESS_MAIN_CHK_LOCKS((_p)); \
if (((_p)->mbuf) || (MSO(_p).overhead >= BIN_VHEAP_SZ(_p)) ) { \
_regs[0] = r(0); \
_res = erts_gc_after_bif_call((_p), (_res), _regs, (_arity)); \
r(0) = _regs[0]; \
E = (_p)->stop; \
} \
HTOP = HEAP_TOP((_p))
#endif
#define db(N) (N)
#define tb(N) (N)
#define xb(N) (*(Eterm *) (((unsigned char *)reg) + (N)))
#define yb(N) (*(Eterm *) (((unsigned char *)E) + (N)))
#define fb(N) (*(double *) (((unsigned char *)&(freg[0].fd)) + (N)))
#define x(N) reg[N]
#define y(N) E[N]
#define r(N) x##N
/*
* Makes sure that there are StackNeed + HeapNeed + 1 words available
* on the combined heap/stack segment, then allocates StackNeed + 1
* words on the stack and saves CP.
*
* M is number of live registers to preserve during garbage collection
*/
#define AH(StackNeed, HeapNeed, M) \
do { \
int needed; \
needed = (StackNeed) + 1; \
if (E - HTOP < (needed + (HeapNeed))) { \
SWAPOUT; \
reg[0] = r(0); \
PROCESS_MAIN_CHK_LOCKS(c_p); \
FCALLS -= erts_garbage_collect(c_p, needed + (HeapNeed), reg, (M)); \
PROCESS_MAIN_CHK_LOCKS(c_p); \
r(0) = reg[0]; \
SWAPIN; \
} \
E -= needed; \
SAVE_CP(E); \
} while (0)
#define Allocate(Ns, Live) AH(Ns, 0, Live)
#define AllocateZero(Ns, Live) \
do { Eterm* ptr; \
int i = (Ns); \
AH(i, 0, Live); \
for (ptr = E + i; ptr > E; ptr--) { \
make_blank(*ptr); \
} \
} while (0)
#define AllocateHeap(Ns, Nh, Live) AH(Ns, Nh, Live)
#define AllocateHeapZero(Ns, Nh, Live) \
do { Eterm* ptr; \
int i = (Ns); \
AH(i, Nh, Live); \
for (ptr = E + i; ptr > E; ptr--) { \
make_blank(*ptr); \
} \
} while (0)
#define AllocateInit(Ns, Live, Y) \
do { AH(Ns, 0, Live); make_blank(Y); } while (0)
/*
* Like the AH macro, but allocates no additional heap space.
*/
#define A(StackNeed, M) AH(StackNeed, 0, M)
#define D(N) \
RESTORE_CP(E); \
E += (N) + 1;
#define TestBinVHeap(VNh, Nh, Live) \
do { \
unsigned need = (Nh); \
if ((E - HTOP < need) || (MSO(c_p).overhead + (VNh) >= BIN_VHEAP_SZ(c_p))) {\
SWAPOUT; \
reg[0] = r(0); \
PROCESS_MAIN_CHK_LOCKS(c_p); \
FCALLS -= erts_garbage_collect(c_p, need, reg, (Live)); \
PROCESS_MAIN_CHK_LOCKS(c_p); \
r(0) = reg[0]; \
SWAPIN; \
} \
} while (0)
/*
* Check if Nh words of heap are available; if not, do a garbage collection.
* Live is number of active argument registers to be preserved.
*/
#define TestHeap(Nh, Live) \
do { \
unsigned need = (Nh); \
if (E - HTOP < need) { \
SWAPOUT; \
reg[0] = r(0); \
PROCESS_MAIN_CHK_LOCKS(c_p); \
FCALLS -= erts_garbage_collect(c_p, need, reg, (Live)); \
PROCESS_MAIN_CHK_LOCKS(c_p); \
r(0) = reg[0]; \
SWAPIN; \
} \
} while (0)
/*
* Check if Nh words of heap are available; if not, do a garbage collection.
* Live is number of active argument registers to be preserved.
* Takes special care to preserve Extra if a garbage collection occurs.
*/
#define TestHeapPreserve(Nh, Live, Extra) \
do { \
unsigned need = (Nh); \
if (E - HTOP < need) { \
SWAPOUT; \
reg[0] = r(0); \
reg[Live] = Extra; \
PROCESS_MAIN_CHK_LOCKS(c_p); \
FCALLS -= erts_garbage_collect(c_p, need, reg, (Live)+1); \
PROCESS_MAIN_CHK_LOCKS(c_p); \
if (Live > 0) { \
r(0) = reg[0]; \
} \
Extra = reg[Live]; \
SWAPIN; \
} \
} while (0)
#ifdef HYBRID
#ifdef INCREMENTAL
#define TestGlobalHeap(Nh, Live, hp) \
do { \
unsigned need = (Nh); \
ASSERT(global_heap <= g_htop && g_htop <= global_hend); \
SWAPOUT; \
reg[0] = r(0); \
FCALLS -= need; \
(hp) = IncAlloc(c_p,need,reg,(Live)); \
r(0) = reg[0]; \
SWAPIN; \
} while (0)
#else
#define TestGlobalHeap(Nh, Live, hp) \
do { \
unsigned need = (Nh); \
ASSERT(global_heap <= g_htop && g_htop <= global_hend); \
if (g_hend - g_htop < need) { \
SWAPOUT; \
reg[0] = r(0); \
FCALLS -= erts_global_garbage_collect(c_p, need, reg, (Live)); \
r(0) = reg[0]; \
SWAPIN; \
} \
(hp) = global_htop; \
} while (0)
#endif
#endif /* HYBRID */
#define Init(N) make_blank(yb(N))
#define Init2(Y1, Y2) do { make_blank(Y1); make_blank(Y2); } while (0)
#define Init3(Y1, Y2, Y3) \
do { make_blank(Y1); make_blank(Y2); make_blank(Y3); } while (0)
#define MakeFun(FunP, NumFree) \
do { \
SWAPOUT; \
reg[0] = r(0); \
r(0) = new_fun(c_p, reg, (ErlFunEntry *) FunP, NumFree); \
SWAPIN; \
} while (0)
/*
* Check that we haven't used the reductions and jump to function pointed to by
* the I register. If we are out of reductions, do a context switch.
*/
#define DispatchMacro() \
do { \
Eterm* dis_next; \
dis_next = (Eterm *) *I; \
CHECK_ARGS(I); \
if (FCALLS > 0 || FCALLS > neg_o_reds) { \
FCALLS--; \
Goto(dis_next); \
} else { \
goto context_switch; \
} \
} while (0)
#define DispatchMacroFun() \
do { \
Eterm* dis_next; \
dis_next = (Eterm *) *I; \
CHECK_ARGS(I); \
if (FCALLS > 0 || FCALLS > neg_o_reds) { \
FCALLS--; \
Goto(dis_next); \
} else { \
goto context_switch_fun; \
} \
} while (0)
#define DispatchMacrox() \
do { \
if (FCALLS > 0) { \
Eterm* dis_next; \
SET_I(((Export *) Arg(0))->address); \
dis_next = (Eterm *) *I; \
FCALLS--; \
CHECK_ARGS(I); \
Goto(dis_next); \
} else if (ERTS_PROC_GET_SAVED_CALLS_BUF(c_p) \
&& FCALLS > neg_o_reds) { \
goto save_calls1; \
} else { \
SET_I(((Export *) Arg(0))->address); \
CHECK_ARGS(I); \
goto context_switch; \
} \
} while (0)
#ifdef DEBUG
/*
* To simplify breakpoint setting, put the code in one place only and jump to it.
*/
# define Dispatch() goto do_dispatch
# define Dispatchx() goto do_dispatchx
# define Dispatchfun() goto do_dispatchfun
#else
/*
* Inline for speed.
*/
# define Dispatch() DispatchMacro()
# define Dispatchx() DispatchMacrox()
# define Dispatchfun() DispatchMacroFun()
#endif
#define Self(R) R = c_p->id
#define Node(R) R = erts_this_node->sysname
#define Arg(N) I[(N)+1]
#define Next(N) \
I += (N) + 1; \
ASSERT(VALID_INSTR(*I)); \
Goto(*I)
#define PreFetch(N, Dst) do { Dst = (Eterm *) *(I + N + 1); } while (0)
#define NextPF(N, Dst) \
I += N + 1; \
ASSERT(VALID_INSTR(Dst)); \
Goto(Dst)
#define GetR(pos, tr) \
do { \
tr = Arg(pos); \
switch (beam_reg_tag(tr)) { \
case R_REG_DEF: tr = r(0); break; \
case X_REG_DEF: tr = xb(x_reg_offset(tr)); break; \
case Y_REG_DEF: ASSERT(y_reg_offset(tr) >= 1); tr = yb(y_reg_offset(tr)); break; \
} \
CHECK_TERM(tr); \
} while (0)
#define GetArg1(N, Dst) GetR((N), Dst)
#define GetArg2(N, Dst1, Dst2) \
do { \
GetR(N, Dst1); \
GetR((N)+1, Dst2); \
} while (0)
#define PutList(H, T, Dst, Store) \
do { \
HTOP[0] = (H); HTOP[1] = (T); \
Store(make_list(HTOP), Dst); \
HTOP += 2; \
} while (0)
#define Move(Src, Dst, Store) \
do { \
Eterm term = (Src); \
Store(term, Dst); \
} while (0)
#define Move2(src1, dst1, src2, dst2) dst1 = (src1); dst2 = (src2)
#define MoveGenDest(src, dstp) \
if ((dstp) == NULL) { r(0) = (src); } else { *(dstp) = src; }
#define MoveReturn(Src, Dest) \
(Dest) = (Src); \
I = c_p->cp; \
ASSERT(VALID_INSTR(*c_p->cp)); \
c_p->cp = 0; \
CHECK_TERM(r(0)); \
Goto(*I)
#define DeallocateReturn(Deallocate) \
do { \
int words_to_pop = (Deallocate); \
SET_I(cp_val(*E)); \
E = ADD_BYTE_OFFSET(E, words_to_pop); \
CHECK_TERM(r(0)); \
Goto(*I); \
} while (0)
#define MoveDeallocateReturn(Src, Dest, Deallocate) \
(Dest) = (Src); \
DeallocateReturn(Deallocate)
#define MoveCall(Src, Dest, CallDest, Size) \
(Dest) = (Src); \
SET_CP(c_p, I+Size+1); \
SET_I((Eterm *) CallDest); \
Dispatch();
#define MoveCallLast(Src, Dest, CallDest, Deallocate) \
(Dest) = (Src); \
RESTORE_CP(E); \
E = ADD_BYTE_OFFSET(E, (Deallocate)); \
SET_I((Eterm *) CallDest); \
Dispatch();
#define MoveCallOnly(Src, Dest, CallDest) \
(Dest) = (Src); \
SET_I((Eterm *) CallDest); \
Dispatch();
#define GetList(Src, H, T) do { \
Eterm* tmp_ptr = list_val(Src); \
H = CAR(tmp_ptr); \
T = CDR(tmp_ptr); } while (0)
#define GetTupleElement(Src, Element, Dest) \
do { \
tmp_arg1 = (Eterm) (((unsigned char *) tuple_val(Src)) + (Element)); \
(Dest) = (*(Eterm *)tmp_arg1); \
} while (0)
#define ExtractNextElement(Dest) \
tmp_arg1 += sizeof(Eterm); \
(Dest) = (* (Eterm *) (((unsigned char *) tmp_arg1)))
#define ExtractNextElement2(Dest) \
do { \
Eterm* ene_dstp = &(Dest); \
ene_dstp[0] = ((Eterm *) tmp_arg1)[1]; \
ene_dstp[1] = ((Eterm *) tmp_arg1)[2]; \
tmp_arg1 += sizeof(Eterm) + sizeof(Eterm); \
} while (0)
#define ExtractNextElement3(Dest) \
do { \
Eterm* ene_dstp = &(Dest); \
ene_dstp[0] = ((Eterm *) tmp_arg1)[1]; \
ene_dstp[1] = ((Eterm *) tmp_arg1)[2]; \
ene_dstp[2] = ((Eterm *) tmp_arg1)[3]; \
tmp_arg1 += 3*sizeof(Eterm); \
} while (0)
#define ExtractNextElement4(Dest) \
do { \
Eterm* ene_dstp = &(Dest); \
ene_dstp[0] = ((Eterm *) tmp_arg1)[1]; \
ene_dstp[1] = ((Eterm *) tmp_arg1)[2]; \
ene_dstp[2] = ((Eterm *) tmp_arg1)[3]; \
ene_dstp[3] = ((Eterm *) tmp_arg1)[4]; \
tmp_arg1 += 4*sizeof(Eterm); \
} while (0)
#define ExtractElement(Element, Dest) \
do { \
tmp_arg1 += (Element); \
(Dest) = (* (Eterm *) tmp_arg1); \
} while (0)
#define PutTuple(Arity, Src, Dest) \
ASSERT(is_arity_value(Arity)); \
Dest = make_tuple(HTOP); \
HTOP[0] = (Arity); \
HTOP[1] = (Src); \
HTOP += 2
#define Put(Word) *HTOP++ = (Word)
#define EqualImmed(X, Y, Action) if (X != Y) { Action; }
#define IsFloat(Src, Fail) if (is_not_float(Src)) { Fail; }
#define IsInteger(Src, Fail) if (is_not_integer(Src)) { Fail; }
#define IsNumber(X, Fail) if (is_not_integer(X) && is_not_float(X)) { Fail; }
#define IsAtom(Src, Fail) if (is_not_atom(Src)) { Fail; }
#define IsIntegerAllocate(Src, Need, Alive, Fail) \
if (is_not_integer(Src)) { Fail; } \
A(Need, Alive)
#define IsNil(Src, Fail) if (is_not_nil(Src)) { Fail; }
#define IsList(Src, Fail) if (is_not_list(Src) && is_not_nil(Src)) { Fail; }
#define IsNonemptyList(Src, Fail) if (is_not_list(Src)) { Fail; }
#define IsNonemptyListAllocate(Src, Need, Alive, Fail) \
if (is_not_list(Src)) { Fail; } \
A(Need, Alive)
#define IsNonemptyListTestHeap(Src, Need, Alive, Fail) \
if (is_not_list(Src)) { Fail; } \
TestHeap(Need, Alive)
#define IsTuple(X, Action) if (is_not_tuple(X)) Action
#define IsArity(Pointer, Arity, Fail) \
if (*(Eterm *)(tmp_arg1 = (Eterm)tuple_val(Pointer)) != (Arity)) { Fail; }
#define IsFunction(X, Action) \
do { \
if ( !(is_any_fun(X)) ) { \
Action; \
} \
} while (0)
#define IsFunction2(F, A, Action) \
do { \
if (is_function_2(c_p, F, A) != am_true ) {\
Action; \
} \
} while (0)
#define IsTupleOfArity(Src, Arity, Fail) \
do { \
if (is_not_tuple(Src) || *(Eterm *)(tmp_arg1 = (Eterm) tuple_val(Src)) != Arity) { \
Fail; \
} \
} while (0)
#define IsBoolean(X, Fail) if ((X) != am_true && (X) != am_false) { Fail; }
#define IsBinary(Src, Fail) \
if (is_not_binary(Src) || binary_bitsize(Src) != 0) { Fail; }
#define IsBitstring(Src, Fail) \
if (is_not_binary(Src)) { Fail; }
#ifdef ARCH_64
#define BsSafeMul(A, B, Fail, Target) \
do { Uint64 _res = (A) * (B); \
if (_res / B != A) { Fail; } \
Target = _res; \
} while (0)
#else
#define BsSafeMul(A, B, Fail, Target) \
do { Uint64 _res = (Uint64)(A) * (Uint64)(B); \
if ((_res >> (8*sizeof(Uint))) != 0) { Fail; } \
Target = _res; \
} while (0)
#endif
#define BsGetFieldSize(Bits, Unit, Fail, Target) \
do { \
Sint _signed_size; Uint _uint_size; \
if (is_small(Bits)) { \
_signed_size = signed_val(Bits); \
if (_signed_size < 0) { Fail; } \
_uint_size = (Uint) _signed_size; \
} else { \
if (!term_to_Uint(Bits, &temp_bits)) { Fail; } \
_uint_size = temp_bits; \
} \
BsSafeMul(_uint_size, Unit, Fail, Target); \
} while (0)
#define BsGetUncheckedFieldSize(Bits, Unit, Fail, Target) \
do { \
Sint _signed_size; Uint _uint_size; \
if (is_small(Bits)) { \
_signed_size = signed_val(Bits); \
if (_signed_size < 0) { Fail; } \
_uint_size = (Uint) _signed_size; \
} else { \
if (!term_to_Uint(Bits, &temp_bits)) { Fail; } \
_uint_size = (Uint) temp_bits; \
} \
Target = _uint_size * Unit; \
} while (0)
#define BsGetFloat2(Ms, Live, Sz, Flags, Dst, Store, Fail) \
do { \
ErlBinMatchBuffer *_mb; \
Eterm _result; Sint _size; \
if (!is_small(Sz) || (_size = unsigned_val(Sz)) > 64) { Fail; } \
_size *= ((Flags) >> 3); \
TestHeap(FLOAT_SIZE_OBJECT, Live); \
_mb = ms_matchbuffer(Ms); \
LIGHT_SWAPOUT; \
_result = erts_bs_get_float_2(c_p, _size, (Flags), _mb); \
LIGHT_SWAPIN; \
if (is_non_value(_result)) { Fail; } \
else { Store(_result, Dst); } \
} while (0)
#define BsGetBinaryImm_2(Ms, Live, Sz, Flags, Dst, Store, Fail) \
do { \
ErlBinMatchBuffer *_mb; \
Eterm _result; \
TestHeap(heap_bin_size(ERL_ONHEAP_BIN_LIMIT), Live); \
_mb = ms_matchbuffer(Ms); \
LIGHT_SWAPOUT; \
_result = erts_bs_get_binary_2(c_p, (Sz), (Flags), _mb); \
LIGHT_SWAPIN; \
if (is_non_value(_result)) { Fail; } \
else { Store(_result, Dst); } \
} while (0)
#define BsGetBinary_2(Ms, Live, Sz, Flags, Dst, Store, Fail) \
do { \
ErlBinMatchBuffer *_mb; \
Eterm _result; Uint _size; \
BsGetFieldSize(Sz, ((Flags) >> 3), Fail, _size); \
TestHeap(ERL_SUB_BIN_SIZE, Live); \
_mb = ms_matchbuffer(Ms); \
LIGHT_SWAPOUT; \
_result = erts_bs_get_binary_2(c_p, _size, (Flags), _mb); \
LIGHT_SWAPIN; \
if (is_non_value(_result)) { Fail; } \
else { Store(_result, Dst); } \
} while (0)
#define BsGetBinaryAll_2(Ms, Live, Unit, Dst, Store, Fail) \
do { \
ErlBinMatchBuffer *_mb; \
Eterm _result; \
TestHeap(ERL_SUB_BIN_SIZE, Live); \
_mb = ms_matchbuffer(Ms); \
if (((_mb->size - _mb->offset) % Unit) == 0) { \
LIGHT_SWAPOUT; \
_result = erts_bs_get_binary_all_2(c_p, _mb); \
LIGHT_SWAPIN; \
ASSERT(is_value(_result)); \
Store(_result, Dst); \
} else { Fail; } \
} while (0)
#define BsSkipBits2(Ms, Bits, Unit, Fail) \
do { \
ErlBinMatchBuffer *_mb; \
size_t new_offset; \
Uint _size; \
_mb = ms_matchbuffer(Ms); \
BsGetFieldSize(Bits, Unit, Fail, _size); \
new_offset = _mb->offset + _size; \
if (new_offset <= _mb->size) { _mb->offset = new_offset; } \
else { Fail; } \
} while (0)
#define BsSkipBitsAll2(Ms, Unit, Fail) \
do { \
ErlBinMatchBuffer *_mb; \
_mb = ms_matchbuffer(Ms); \
if (((_mb->size - _mb->offset) % Unit) == 0) {_mb->offset = _mb->size; } \
else { Fail; } \
} while (0)
#define BsSkipBitsImm2(Ms, Bits, Fail) \
do { \
ErlBinMatchBuffer *_mb; \
size_t new_offset; \
_mb = ms_matchbuffer(Ms); \
new_offset = _mb->offset + (Bits); \
if (new_offset <= _mb->size) { _mb->offset = new_offset; } \
else { Fail; } \
} while (0)
#define NewBsPutIntegerImm(Sz, Flags, Src) \
do { \
if (!erts_new_bs_put_integer(ERL_BITS_ARGS_3((Src), (Sz), (Flags)))) { goto badarg; } \
} while (0)
#define NewBsPutInteger(Sz, Flags, Src) \
do { \
Sint _size; \
BsGetUncheckedFieldSize(Sz, ((Flags) >> 3), goto badarg, _size); \
if (!erts_new_bs_put_integer(ERL_BITS_ARGS_3((Src), _size, (Flags)))) \
{ goto badarg; } \
} while (0)
#define NewBsPutFloatImm(Sz, Flags, Src) \
do { \
if (!erts_new_bs_put_float(c_p, (Src), (Sz), (Flags))) { goto badarg; } \
} while (0)
#define NewBsPutFloat(Sz, Flags, Src) \
do { \
Sint _size; \
BsGetUncheckedFieldSize(Sz, ((Flags) >> 3), goto badarg, _size); \
if (!erts_new_bs_put_float(c_p, (Src), _size, (Flags))) { goto badarg; } \
} while (0)
#define NewBsPutBinary(Sz, Flags, Src) \
do { \
Sint _size; \
BsGetUncheckedFieldSize(Sz, ((Flags) >> 3), goto badarg, _size); \
if (!erts_new_bs_put_binary(ERL_BITS_ARGS_2((Src), _size))) { goto badarg; } \
} while (0)
#define NewBsPutBinaryImm(Sz, Src) \
do { \
if (!erts_new_bs_put_binary(ERL_BITS_ARGS_2((Src), (Sz)))) { goto badarg; } \
} while (0)
#define NewBsPutBinaryAll(Src, Unit) \
do { \
if (!erts_new_bs_put_binary_all(ERL_BITS_ARGS_2((Src), (Unit)))) { goto badarg; } \
} while (0)
#define IsPort(Src, Fail) if (is_not_port(Src)) { Fail; }
#define IsPid(Src, Fail) if (is_not_pid(Src)) { Fail; }
#define IsRef(Src, Fail) if (is_not_ref(Src)) { Fail; }
static BifFunction translate_gc_bif(void* gcf);
static Eterm* handle_error(Process* c_p, Eterm* pc, Eterm* reg, BifFunction bf);
static Eterm* next_catch(Process* c_p, Eterm *reg);
static void terminate_proc(Process* c_p, Eterm Value);
static Eterm add_stacktrace(Process* c_p, Eterm Value, Eterm exc);
static void save_stacktrace(Process* c_p, Eterm* pc, Eterm* reg,
BifFunction bf, Eterm args);
static struct StackTrace * get_trace_from_exc(Eterm exc);
static Eterm make_arglist(Process* c_p, Eterm* reg, int a);
static Eterm call_error_handler(Process* p, Eterm* ip, Eterm* reg);
static Eterm call_breakpoint_handler(Process* p, Eterm* fi, Eterm* reg);
static Uint* fixed_apply(Process* p, Eterm* reg, Uint arity);
static Eterm* apply(Process* p, Eterm module, Eterm function,
Eterm args, Eterm* reg);
static int hibernate(Process* c_p, Eterm module, Eterm function,
Eterm args, Eterm* reg);
static Eterm* call_fun(Process* p, int arity, Eterm* reg, Eterm args);
static Eterm* apply_fun(Process* p, Eterm fun, Eterm args, Eterm* reg);
static Eterm new_fun(Process* p, Eterm* reg, ErlFunEntry* fe, int num_free);
static BIF_RETTYPE nif_dispatcher_0(Process* p, Uint* I);
static BIF_RETTYPE nif_dispatcher_1(Process* p, Eterm arg1, Uint* I);
static BIF_RETTYPE nif_dispatcher_2(Process* p, Eterm arg1, Eterm arg2, Uint* I);
static BIF_RETTYPE nif_dispatcher_3(Process* p, Eterm arg1, Eterm arg2, Eterm arg3, Uint* I);
#if defined(_OSE_) || defined(VXWORKS)
static int init_done;
#endif
void
init_emulator(void)
{
#if defined(_OSE_) || defined(VXWORKS)
init_done = 0;
#endif
process_main();
}
/*
* On certain platforms, make sure that the main variables really are placed
* in registers.
*/
#if defined(__GNUC__) && defined(sparc) && !defined(DEBUG)