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yap-6.3/C/amasm.c

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This commit was generated by cvs2svn to compensate for changes in r4, which included commits to RCS files with non-trunk default branches. git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@5 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
2001-04-09 20:54:03 +01:00
/*************************************************************************
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: amasm.c *
* Last rev: *
* mods: *
* comments: abstract machine assembler *
* *
*************************************************************************/
#ifdef SCCS
static char SccsId[] = "@(#)amasm.c 1.3 3/15/90";
#endif
#include "Yap.h"
#include "yapio.h"
#include "compile.h"
#include "clause.h"
#ifdef YAPOR
#include "or.macros.h"
#endif /* YAPOR */
#if HAVE_STRING_H
#include <string.h>
#endif
STATIC_PROTO(void Var_Ref, (Ventry *));
STATIC_PROTO(AREG emit_xreg, (CELL));
STATIC_PROTO(YREG emit_yreg, (CELL));
STATIC_PROTO(AREG emit_xreg2, (void));
STATIC_PROTO(AREG emit_x, (CELL));
STATIC_PROTO(YREG emit_y, (Ventry *));
STATIC_PROTO(CODEADDR emit_a, (CELL));
STATIC_PROTO(CODEADDR emit_bmlabel, (CELL));
STATIC_PROTO(CODEADDR emit_ilabel, (CELL));
STATIC_PROTO(Functor emit_f, (CELL));
STATIC_PROTO(CELL emit_c, (CELL));
STATIC_PROTO(COUNT emit_count, (CELL));
STATIC_PROTO(OPCODE emit_op, (op_numbers));
STATIC_PROTO(void a_cl, (op_numbers));
STATIC_PROTO(void a_cle, (op_numbers));
STATIC_PROTO(void a_cld, (op_numbers));
STATIC_PROTO(void a_e, (op_numbers));
STATIC_PROTO(void a_ue, (op_numbers, op_numbers));
STATIC_PROTO(void a_v, (op_numbers));
STATIC_PROTO(void a_uv, (op_numbers, op_numbers));
STATIC_PROTO(void a_vr, (op_numbers));
STATIC_PROTO(void a_rv, (op_numbers));
STATIC_PROTO(void a_vv, (op_numbers, op_numbers));
STATIC_PROTO(void a_glist, (void));
STATIC_PROTO(void a_pair, (CELL *));
STATIC_PROTO(void a_f, (op_numbers));
STATIC_PROTO(void a_c, (op_numbers));
STATIC_PROTO(void a_uc, (op_numbers, op_numbers));
STATIC_PROTO(void a_n, (op_numbers, int));
STATIC_PROTO(void a_un, (op_numbers, op_numbers, int));
STATIC_PROTO(void a_nc, (op_numbers, int));
STATIC_PROTO(void a_unc, (op_numbers, op_numbers, int));
STATIC_PROTO(void a_r, (op_numbers));
STATIC_PROTO(void a_p, (op_numbers));
STATIC_PROTO(void a_pl, (op_numbers,PredEntry *));
STATIC_PROTO(void a_l, (op_numbers));
STATIC_PROTO(void a_3sw, (op_numbers));
STATIC_PROTO(void a_3sws, (op_numbers));
STATIC_PROTO(void a_4sw, (op_numbers));
#if USE_THREADED_CODE
STATIC_PROTO(void a_4_lsw, (op_numbers));
#endif
STATIC_PROTO(void a_hx, (op_numbers));
STATIC_PROTO(void a_if, (op_numbers));
STATIC_PROTO(void a_go, (op_numbers));
STATIC_PROTO(void a_cut, (void));
#ifdef YAPOR
STATIC_PROTO(void a_try, (op_numbers, CELL, CELL, int, int));
STATIC_PROTO(void a_either, (op_numbers, CELL, CELL, int, int));
#else
STATIC_PROTO(void a_try, (op_numbers, CELL, CELL));
STATIC_PROTO(void a_either, (op_numbers, CELL, CELL));
#endif /* YAPOR */
STATIC_PROTO(void a_gl_in, (op_numbers));
STATIC_PROTO(void a_gl, (op_numbers));
STATIC_PROTO(void a_bfunc, (CELL));
STATIC_PROTO(AREG compile_cmp_flags, (char *));
STATIC_PROTO(void a_igl, (op_numbers));
STATIC_PROTO(void a_ucons, (op_numbers));
STATIC_PROTO(void a_uvar, (void));
STATIC_PROTO(void a_wvar, (void));
STATIC_PROTO(void do_pass, (void));
#ifdef DEBUG_OPCODES
STATIC_PROTO(void DumpOpCodes, (void));
#endif
#ifdef SFUNC
STATIC_PROTO(void a_vsf, (int));
STATIC_PROTO(void a_asf, (int));
#endif
STATIC_PROTO(void check_alloc, (void));
STATIC_PROTO(void a_deallocate, (void));
STATIC_PROTO(void a_bmap, (void));
STATIC_PROTO(void a_fetch_vv, (void));
STATIC_PROTO(void a_fetch_cv, (void));
STATIC_PROTO(void a_fetch_vc, (void));
STATIC_PROTO(void a_f2, (int));
#define CELLSIZE sizeof(CELL)
#define MaxLabels 2048
static yamop *code_p;
#define GONEXT(TYPE) code_p = ((yamop *)(&(code_p->u.TYPE.next)))
static CODEADDR code_addr;
static int pass_no;
static int *label_offset;
static OPREG var_offset;
static int is_y_var;
static int alloc_found, dealloc_found;
static int asm_error = FALSE;
static int assembling;
static CELL comit_lab;
static int do_not_optimize_uatom = FALSE;
static AREG x1_arg, x2_arg;
static Int c_arg;
#define TYPE_XX 0
#define TYPE_CX 1
#define TYPE_XC 2
static int c_type;
inline static YREG
emit_y(Ventry *ve)
{
#if MSHIFTOFFS
return(-FixedEnvSize - ((ve->NoOfVE) & MaskVarAdrs) - 1);
#else
return(-FixedEnvSize - (((ve->NoOfVE) & MaskVarAdrs) * CELLSIZE) - CELLSIZE);
#endif
}
inline static void
Var_Ref(Ventry *ve)
{
if (ve->KindOfVE == PermVar) {
is_y_var = 1;
#if MSHIFTOFFS
var_offset = -FixedEnvSize - ((ve->NoOfVE) & MaskVarAdrs) - 1;
#else
var_offset = -FixedEnvSize - (((ve->NoOfVE) & MaskVarAdrs) * CELLSIZE) - CELLSIZE;
#endif
}
else {
is_y_var = 0;
#if PRECOMPUTE_REGADDRESS
var_offset = (CELL) (XREGS + ((ve->NoOfVE) & MaskVarAdrs));
#else
#if MSHIFTOFFS
var_offset = ((ve->NoOfVE) & MaskVarAdrs);
#else
var_offset = CELLSIZE * ((ve->NoOfVE) & MaskVarAdrs);
#endif
#endif /* PRECOMPUTE_REGADDRESS */
}
}
#define is_void_var() (((Ventry *) (cpc->rnd1))->KindOfVE == VoidVar)
#define is_a_void(X) (((Ventry *) (X))->KindOfVE == VoidVar)
#define is_temp_var() (((Ventry *) (cpc->rnd1))->KindOfVE == TempVar)
#define is_atemp_var(p) (((Ventry *) (p->rnd1))->KindOfVE == TempVar)
#define no_ref_var() (((Ventry *) (cpc->rnd1))->NoOfVE == 1)
#define no_ref(X) (((Ventry *) (X))->NoOfVE == 1)
inline static void
fill_small(CELL w)
{
SMALLUNSGN *ptr = ((SMALLUNSGN *) (code_p));
if (pass_no)
*ptr = (SMALLUNSGN) w;
code_p = (yamop *) (++ptr);
}
inline static void
fill_a(CELL a)
{
CELL *ptr = ((CELL *) (code_p));
if (pass_no)
*ptr = a;
code_p = (yamop *) (++ptr);
}
inline static AREG
emit_xreg(CELL w)
{
return ((AREG) w);
}
inline static YREG
emit_yreg(CELL w)
{
return ((YREG) w);
}
inline static AREG
emit_xreg2(void)
{
#if PRECOMPUTE_REGADDRESS
return (emit_xreg((CELL) (XREGS + cpc->rnd2)));
#else
#if MSHIFTOFFS
return (emit_xreg(cpc->rnd2));
#else
return (emit_xreg(CELLSIZE * (cpc->rnd2)));
#endif
#endif /* ALIGN_LONGS */
}
inline static AREG
emit_x(CELL xarg)
{
#if PRECOMPUTE_REGADDRESS
return (emit_xreg((CELL) (XREGS + xarg)));
#else
#if MSHIFTOFFS
return (emit_xreg(xarg));
#else
return (emit_xreg(CELLSIZE * (xarg)));
#endif
#endif /* PRECOMPUTE_REGADDRESS */
}
inline static CODEADDR
emit_a(CELL a)
{
return ((CODEADDR) (a));
}
inline static CODEADDR
emit_ilabel(register CELL addr)
{
if (addr & 1)
return (emit_a(Unsigned(code_addr) + label_offset[addr]));
else
return (emit_a(addr));
}
inline static CODEADDR
emit_bmlabel(register CELL addr)
{
return (emit_a(Unsigned(code_addr) + label_offset[addr]));
}
inline static Functor
emit_f(CELL a)
{
return ((Functor) (a));
}
inline static CELL
emit_c(CELL a)
{
return (a);
}
static inline COUNT
emit_count(CELL count)
{
return (count);
}
#ifdef DEBUG_OPCODES
inline static void
DumpOpCodes(void)
{
int i = 0, j;
while (i < 30) {
for (j = i; j <= _std_top; j += 25)
YP_fprintf(YP_stderr, "%5d %6lx", j, absmadr(j));
YP_putchar('\n');
++i;
}
}
#endif
static inline OPCODE
emit_op(op_numbers op)
{
return (absmadr((Int) op));
}
OPCODE
opcode(op_numbers op)
{
return (emit_op(op));
}
static void
a_cl(op_numbers opcode)
{
if (pass_no) {
Clause *cl = (Clause *)code_addr;
code_p->opc = emit_op(opcode);
code_p->u.l.l = code_addr;
cl->u.ClVarChain = (yamop *)(Unsigned(code_addr) + label_offset[1]);
}
GONEXT(l);
}
static void
a_cle(op_numbers opcode)
{
if (pass_no) {
Clause *cl = (Clause *)code_addr;
code_p->opc = emit_op(opcode);
code_p->u.EC.ClTrail = 0;
code_p->u.EC.ClENV = 0;
code_p->u.EC.ClRefs = 0;
code_p->u.EC.ClBase = code_addr;
cl->u2.ClExt = code_p;
cl->ClFlags |= LogUpdRuleMask;
}
GONEXT(EC);
}
static void
a_cld(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.l.l = (CODEADDR)(((Clause *)code_addr)->u2.ClExt);
}
GONEXT(l);
}
inline static void
a_e(op_numbers opcode)
{
if (pass_no)
code_p->opc = emit_op(opcode);
GONEXT(e);
}
inline static void
a_ue(op_numbers opcode, op_numbers opcodew)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.o.opcw = emit_op(opcodew);
}
GONEXT(o);
}
inline static void
a_v(op_numbers opcode)
{
Ventry *ve = (Ventry *) cpc->rnd1;
Var_Ref(ve);
if (ve->KindOfVE == PermVar) {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->u.y.y = emit_yreg(var_offset);
}
GONEXT(y);
}
else {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->u.x.x = emit_xreg(var_offset);
}
GONEXT(x);
}
}
inline static void
a_uv(op_numbers opcode, op_numbers opcodew)
{
Ventry *ve = (Ventry *) cpc->rnd1;
Var_Ref(ve);
if (ve->KindOfVE == PermVar) {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->u.oy.opcw = emit_op((op_numbers)((int)opcodew + is_y_var));
code_p->u.oy.y = emit_yreg(var_offset);
}
GONEXT(oy);
}
else {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->u.ox.opcw = emit_op((op_numbers)((int)opcodew + is_y_var));
code_p->u.ox.x = emit_xreg(var_offset);
}
GONEXT(ox);
}
}
inline static void
a_vv(op_numbers opcode, op_numbers opcodew)
{
Ventry *ve = (Ventry *) cpc->rnd1;
Var_Ref(ve);
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.oxx.opcw = emit_op(opcodew);
code_p->u.oxx.xl = emit_xreg(var_offset);
}
cpc = cpc->nextInst;
ve = (Ventry *) cpc->rnd1;
Var_Ref(ve);
if (pass_no)
code_p->u.oxx.xr = emit_xreg(var_offset);
GONEXT(oxx);
}
inline static void
a_vr(op_numbers opcode)
{
Ventry *ve = (Ventry *) cpc->rnd1;
Var_Ref(ve);
if (ve->KindOfVE == PermVar) {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->u.yx.y = emit_yreg(var_offset);
code_p->u.yx.x = emit_xreg2();
}
GONEXT(yx);
}
else {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->u.xx.xl = emit_xreg(var_offset);
code_p->u.xx.xr = emit_xreg2();
}
GONEXT(xx);
}
}
inline static void
a_rv(op_numbers opcode)
{
Ventry *ve = (Ventry *) cpc->rnd1;
if (ve->KindOfVE == PermVar) {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->u.xy.x = emit_xreg2();
code_p->u.xy.y = emit_yreg(var_offset);
}
GONEXT(xy);
}
else {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->u.xx.xl = emit_xreg2();
code_p->u.xx.xr = emit_xreg(var_offset);
}
GONEXT(xx);
}
}
#ifdef SFUNC
/* vsc: I don't understand these instructions */
inline static void
a_vsf(opcode)
int opcode;
{
Ventry *ve = (Ventry *) cpc->rnd1;
Var_Ref(ve);
if (ve->KindOfVE == PermVar) {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->u.fy.f = emit_f(cpc->rnd2);
code_p->u.fy.a = ArityOfFunctor(emit_f(cpc->rnd2));
code_p->u.fy.y = emit_yreg(var_offset);
}
GONEXT(fy);
}
else {
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->u.fx.f = emit_f(cpc->rnd2);
code_p->u.fx.a = ArityOfFunctor(emit_f(cpc->rnd2));
code_p->u.fx.x = emit_xreg(var_offset);
}
GONEXT(fx);
}
}
inline static void
a_asf(opcode)
int opcode;
{
if (pass_no) {
code_p->opc = emit_op((op_numbers)((int)opcode + is_y_var));
code_p->u.fn.f = emit_f(cpc->rnd2);
code_p->u.fn.a = ArityOfFunctor(emit_f(cpc->rnd2));
code_p->u.fn.n = emit_count(cpc->rnd1);
}
GONEXT(fn);
}
#endif
inline static void
a_pair(CELL *seq_ptr)
{
CELL *ptr = ((CELL *) (code_p));
code_p = (yamop *) (ptr + 2);
if (pass_no) {
ptr[0] = (CELL) emit_a(*seq_ptr);
ptr[1] = (CELL) emit_ilabel(seq_ptr[1]);
}
}
inline static void
a_n(op_numbers opcode, int count)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.s.s = count;
}
GONEXT(s);
}
inline static void
a_un(op_numbers opcode, op_numbers opcodew, int count)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.os.opcw = emit_op(opcodew);
code_p->u.os.s = count;
}
GONEXT(os);
}
inline static void
a_f(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.f.f = emit_f(cpc->rnd1);
code_p->u.f.a = ArityOfFunctor(emit_f(cpc->rnd1));
}
GONEXT(f);
}
inline static void
a_uf(op_numbers opcode, op_numbers opcodew)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.of.opcw = emit_op(opcodew);
code_p->u.of.f = emit_f(cpc->rnd1);
code_p->u.of.a = ArityOfFunctor(emit_f(cpc->rnd1));
}
GONEXT(of);
}
inline static void
a_c(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.c.c = emit_c(cpc->rnd1);
}
GONEXT(c);
}
inline static void
a_uc(op_numbers opcode, op_numbers opcode_w)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.oc.opcw = emit_op(opcode_w);
code_p->u.oc.c = emit_c(cpc->rnd1);
}
GONEXT(oc);
}
inline static void
a_blob(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.c.c =
AbsAppl((CELL *)(Unsigned(code_addr) + label_offset[cpc->rnd1]));
}
GONEXT(c);
}
inline static void
a_ublob(op_numbers opcode, op_numbers opcode_w)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.oc.opcw = emit_op(opcode_w);
code_p->u.oc.c =
AbsAppl((CELL *)(Unsigned(code_addr) + label_offset[cpc->rnd1]));
}
GONEXT(oc);
}
inline static void
a_nc(op_numbers opcode, int i)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.sc.s = i;
code_p->u.sc.c = emit_c(cpc->rnd1);
}
GONEXT(sc);
}
inline static void
a_unc(op_numbers opcode, op_numbers opcodew, int i)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.osc.opcw = emit_op(opcodew);
code_p->u.osc.s = i;
code_p->u.osc.c = emit_c(cpc->rnd1);
}
GONEXT(osc);
}
inline static void
a_rf(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.xf.x = emit_xreg2();
code_p->u.xf.f = emit_f(cpc->rnd1);
code_p->u.xf.a = ArityOfFunctor(emit_f(cpc->rnd1));
}
GONEXT(xf);
}
inline static void
a_rc(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.xc.x = emit_xreg2();
code_p->u.xc.c = emit_c(cpc->rnd1);
}
GONEXT(xc);
}
inline static void
a_rb(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.xc.x = emit_xreg2();
code_p->u.xc.c = AbsAppl((CELL *)(Unsigned(code_addr) + label_offset[cpc->rnd1]));
}
GONEXT(xc);
}
inline static void
a_r(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.x.x = emit_xreg2();
}
GONEXT(x);
}
static void
check_alloc(void)
{
if (alloc_found == 2) {
if (CurrentPred->PredFlags & LogUpdatePredFlag)
a_cle(_alloc_for_logical_pred);
a_e(_allocate);
alloc_found = 1;
}
}
static void
a_p(op_numbers opcode)
{ /* emit opcode & predicate code address */
int comit_ok = (comit_lab == 0);
Prop fe = (Prop) (cpc->rnd1);
CELL Flags = RepPredProp(fe)->PredFlags;
if (Flags & BasicPredFlag) {
op_numbers op;
check_alloc();
switch (Flags & 0x7f) {
case _equal:
op = _p_equal;
break;
case _dif:
op = _p_dif;
break;
case _eq:
op = _p_eq;
break;
case _arg:
op = _p_arg;
break;
case _functor:
op = _p_functor;
break;
default:
op = _p_equal; /* just to make some compilers happy */
Error(SYSTEM_ERROR, TermNil, "internal assembler error for built-in (%d)", (Flags & 0x7f));
save_machine_regs();
longjmp(CompilerBotch, 1);
}
a_e(op);
if (!comit_ok) {
Error(SYSTEM_ERROR, TermNil,"internal assembler error for commit");
save_machine_regs();
longjmp(CompilerBotch, 1);
}
return;
}
if (Flags & CPredFlag) {
check_alloc();
if (!comit_ok && (Flags & TestPredFlag)) {
if (pass_no) {
if (Flags & UserCPredFlag) {
Error(SYSTEM_ERROR, TermNil,
"user defined predicate cannot be a test predicate");
save_machine_regs();
longjmp(CompilerBotch, 1);
} else
code_p->opc = emit_op(_call_c_wfail);
code_p->u.sdl.s =
emit_count(-Signed(RealEnvSize) - CELLSIZE * cpc->rnd2);
code_p->u.sdl.d =
emit_a((CELL) RepPredProp(fe)->CodeOfPred);
code_p->u.sdl.l =
emit_a(Unsigned(code_addr) + label_offset[comit_lab]);
code_p->u.sdl.p =
emit_a((CELL) RepPredProp(fe));
}
GONEXT(sdl);
comit_lab = 0;
comit_ok = TRUE;
}
else {
if (pass_no) {
if (Flags & UserCPredFlag)
code_p->opc = emit_op(_call_usercpred);
else
code_p->opc = emit_op(_call_cpred);
code_p->u.sla.s = emit_count(-Signed(RealEnvSize) - CELLSIZE
* (cpc->rnd2));
code_p->u.sla.l = emit_a((CELL)
RepPredProp(fe)->CodeOfPred);
code_p->u.sla.p = emit_a((CELL)
RepPredProp(fe));
if (cpc->rnd2)
code_p->u.sla.l2 = emit_bmlabel(cpc->arnds[1]);
else
/* there is no bitmap as there are no variables in the environment */
code_p->u.sla.l2 = (CELL)NIL;
}
GONEXT(sla);
}
if (!comit_ok) {
Error(SYSTEM_ERROR, TermNil, "internal assembler error for commit");
save_machine_regs();
longjmp(CompilerBotch,1);
}
return;
}
if (opcode == _call && alloc_found == 2) {
if (CurrentPred->PredFlags & LogUpdatePredFlag)
a_cle(_alloc_for_logical_pred);
if (pass_no) {
code_p->opc = emit_op(_fcall);
}
alloc_found = 1;
}
else {
check_alloc();
if (pass_no)
code_p->opc = emit_op(opcode);
}
if (opcode == _call) {
if (pass_no) {
code_p->u.sla.s = emit_count(-Signed(RealEnvSize) - CELLSIZE *
cpc->rnd2);
code_p->u.sla.l = emit_a((CELL) &
RepPredProp(fe)->StateOfPred);
code_p->u.sla.p = emit_a((CELL)
RepPredProp(fe));
if (cpc->rnd2)
code_p->u.sla.l2 = emit_bmlabel(cpc->arnds[1]);
else
/* there is no bitmap as there are no variables in the environment */
code_p->u.sla.l2 = (CELL)NIL;
}
GONEXT(sla);
}
else {
if (pass_no)
code_p->u.l.l = emit_a((CELL) &RepPredProp(fe)->StateOfPred);
GONEXT(l);
}
if (!comit_ok) {
Error(SYSTEM_ERROR, TermNil, "internal assembler error for commit");
save_machine_regs();
longjmp(CompilerBotch,1);
}
}
/*
emit a false call so that the garbage collector and friends will find
reasonable information on the stack.
*/
static void
a_empty_call(void)
{
if (alloc_found == 1 && !dealloc_found) {
/* we have a solid environment under us, just trust it */
if (pass_no)
code_p->opc = emit_op(_call);
}
else {
/** oops, our environment is crap */
if (pass_no)
code_p->opc = emit_op(_fcall);
}
if (pass_no) {
PredEntry *pe = RepPredProp(GetPredProp(AtomTrue,0));
code_p->u.sla.s = emit_count(-Signed(RealEnvSize) - CELLSIZE *
cpc->rnd2);
code_p->u.sla.l = emit_a((CELL)&(pe->StateOfPred));
code_p->u.sla.p = emit_a((CELL)pe);
if (cpc->rnd2)
code_p->u.sla.l2 = emit_bmlabel(cpc->rnd1);
else
/* there is no bitmap as there are no variables in the environment */
code_p->u.sla.l2 = (CELL)NIL;
}
GONEXT(sla);
}
static void
a_l(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.l.l = emit_a(Unsigned(code_addr) + label_offset[cpc->rnd1]);
}
GONEXT(l);
}
static void
a_pl(op_numbers opcode, PredEntry *pred)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.l.l = emit_a((CELL)pred);
}
GONEXT(l);
}
static AREG
compile_cmp_flags(char *s)
{
if (strcmp(s,"=<") == 0) return(EQ_OK_IN_CMP|LT_OK_IN_CMP);
if (strcmp(s,"<") == 0) return(LT_OK_IN_CMP);
if (strcmp(s,">=") == 0) return(EQ_OK_IN_CMP|GT_OK_IN_CMP);
if (strcmp(s,">") == 0) return(GT_OK_IN_CMP);
if (strcmp(s,"=:=") == 0) return(EQ_OK_IN_CMP);
if (strcmp(s,"=\\=") == 0) return(GT_OK_IN_CMP|LT_OK_IN_CMP);
Error(SYSTEM_ERROR, x1_arg, "internal assembler error in flags for %s", s);
return(0);
}
static void
a_bfunc(CELL pred)
{
Ventry *ve = (Ventry *) cpc->rnd1;
Var_Ref(ve);
if (ve->KindOfVE == PermVar) {
YREG v1 = emit_yreg(var_offset);
cpc = cpc->nextInst;
ve = (Ventry *) cpc->rnd1;
Var_Ref(ve);
if (ve->KindOfVE == PermVar) {
if (pass_no) {
code_p->opc = emit_op(_call_bfunc_yy);
code_p->u.lxy.p = (CODEADDR) RepPredProp(((Prop)pred));
code_p->u.lyy.l = (CODEADDR) (RepPredProp(((Prop)pred))->TrueCodeOfPred);
code_p->u.lyy.y1 = v1;
code_p->u.lyy.y2 = emit_yreg(var_offset);
code_p->u.lyy.flags = compile_cmp_flags(RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))->StrOfAE);
}
GONEXT(lyy);
} else {
if (pass_no) {
code_p->opc = emit_op(_call_bfunc_yx);
code_p->u.lxy.l = (CODEADDR) (RepPredProp(((Prop)pred))->TrueCodeOfPred);
code_p->u.lxy.p = (CODEADDR) RepPredProp(((Prop)pred));
code_p->u.lxy.x = emit_xreg(var_offset);
code_p->u.lxy.y = v1;
code_p->u.lxy.flags = compile_cmp_flags(RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))->StrOfAE);
}
GONEXT(lxy);
}
} else {
AREG x1 = emit_xreg(var_offset);
cpc = cpc->nextInst;
ve = (Ventry *) cpc->rnd1;
Var_Ref(ve);
if (ve->KindOfVE == PermVar) {
if (pass_no) {
code_p->opc = emit_op(_call_bfunc_xy);
code_p->u.lxy.l = (CODEADDR) (RepPredProp(((Prop)pred))->TrueCodeOfPred);
code_p->u.lxy.p = (CODEADDR) RepPredProp(((Prop)pred));
code_p->u.lxy.x = x1;
code_p->u.lxy.y = emit_yreg(var_offset);
code_p->u.lxy.flags = compile_cmp_flags(RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))->StrOfAE);
}
GONEXT(lxy);
} else {
if (pass_no) {
code_p->opc = emit_op(_call_bfunc_xx);
code_p->u.lxy.p = (CODEADDR) RepPredProp(((Prop)pred));
code_p->u.lxx.l = (CODEADDR) (RepPredProp(((Prop)pred))->TrueCodeOfPred);
code_p->u.lxx.x1 = x1;
code_p->u.lxx.x2 = emit_xreg(var_offset);
code_p->u.lxx.flags = compile_cmp_flags(RepAtom(NameOfFunctor(RepPredProp(((Prop)pred))->FunctorOfPred))->StrOfAE);
}
GONEXT(lxx);
}
}
}
static void
a_igl(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.l.l = emit_a(cpc->rnd1);
}
GONEXT(l);
}
static void
a_3sw(op_numbers opcode)
{
CELL *seq_ptr;
if (pass_no) {
code_p->opc = emit_op(opcode);
seq_ptr = cpc->arnds;
code_p->u.lll.l1 = emit_ilabel(seq_ptr[0]);
code_p->u.lll.l2 = emit_ilabel(seq_ptr[1]);
code_p->u.lll.l3 = emit_ilabel(seq_ptr[2]);
}
GONEXT(lll);
}
static void
a_3sws(op_numbers opcode)
{
CELL *seq_ptr;
if (pass_no) {
code_p->opc = emit_op(opcode);
seq_ptr = cpc->arnds;
code_p->u.slll.s = IPredArity;
code_p->u.slll.p = (CODEADDR)CurrentPred;
#ifdef YAPOR
INIT_YAMOP_LTT(code_p, cpc->rnd1 >> 1);
if (cpc->rnd1 & 1)
PUT_YAMOP_CUT(code_p);
if (CurrentPred->PredFlags & SequentialPredFlag)
PUT_YAMOP_SEQ(code_p);
#endif /* YAPOR */
code_p->u.slll.l1 = emit_ilabel(seq_ptr[0]);
code_p->u.slll.l2 = emit_ilabel(seq_ptr[1]);
code_p->u.slll.l3 = emit_ilabel(seq_ptr[2]);
}
GONEXT(slll);
}
static void
a_4sw(op_numbers opcode)
{
CELL *seq_ptr;
if (pass_no) {
code_p->opc = emit_op(opcode);
seq_ptr = cpc->arnds;
code_p->u.llll.l1 = emit_ilabel(seq_ptr[0]);
code_p->u.llll.l2 = emit_ilabel(seq_ptr[1]);
code_p->u.llll.l3 = emit_ilabel(seq_ptr[2]);
code_p->u.llll.l4 = emit_ilabel(seq_ptr[3]);
}
GONEXT(llll);
}
#if USE_THREADED_CODE
/* specialised code for fast switch_on_list, taking advantage of the
fact that in this case we are sure it is a list */
static void
a_4_lsw(op_numbers opcode)
{
CELL *seq_ptr;
seq_ptr = cpc->arnds;
if (opcode == _switch_list_nl && (seq_ptr[0] & 1)) {
/* local address, don't do anything because we
don't know what is supposed to be there */
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.llll.l1 = emit_ilabel(seq_ptr[0]);
code_p->u.llll.l2 = emit_ilabel(seq_ptr[1]);
code_p->u.llll.l3 = emit_ilabel(seq_ptr[2]);
code_p->u.llll.l4 = emit_ilabel(seq_ptr[3]);
}
GONEXT(llll);
} else {
/* optimise direct jumps to list like code, by prefetching the
first address for lists */
if (pass_no) {
code_p->opc = emit_op(_switch_list_nl_prefetch);
code_p->u.ollll.pop = ((yamop *)(seq_ptr[0]))->opc;
code_p->u.ollll.l1 = emit_ilabel(seq_ptr[0]);
code_p->u.ollll.l2 = emit_ilabel(seq_ptr[1]);
code_p->u.ollll.l3 = emit_ilabel(seq_ptr[2]);
code_p->u.ollll.l4 = emit_ilabel(seq_ptr[3]);
}
GONEXT(ollll);
}
}
#endif
static void
a_hx(op_numbers opcode)
{
register CELL i, imax;
register CELL *seq_ptr = cpc->arnds;
imax = cpc->rnd1;
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.c.c = emit_c(imax);
}
GONEXT(c);
for (i = 0; i < imax; i++) {
a_pair(seq_ptr);
seq_ptr += 2;
}
}
static void
a_if(op_numbers opcode)
{
register CELL i, imax;
register CELL *seq_ptr = cpc->arnds + 1;
imax = cpc->rnd1;
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.sl.s = emit_count(imax);
code_p->u.sl.l = emit_ilabel(cpc->arnds[0]);
}
GONEXT(sl);
for (i = 0; i < imax; i++) {
a_pair(seq_ptr);
seq_ptr += 2;
}
}
static void
a_go(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.cll.c = emit_count(cpc->arnds[0]);
code_p->u.cll.l1 = emit_ilabel(cpc->arnds[1]);
code_p->u.cll.l2 = emit_ilabel(cpc->arnds[2]);
}
GONEXT(cll);
}
static void
a_cut(void)
{
check_alloc();
if (dealloc_found) {
a_e(_cut_e);
} else if (alloc_found)
a_e(_cut);
else
a_e(_cut_t);
}
static void
#ifdef YAPOR
a_try(op_numbers opcode, CELL lab, CELL opr, int nofalts, int hascut)
#else
a_try(op_numbers opcode, CELL lab, CELL opr)
#endif /* YAPOR */
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.ld.d = emit_a(lab);
code_p->u.ld.s = emit_count(opr);
code_p->u.ld.p = (CODEADDR)CurrentPred;
#ifdef YAPOR
INIT_YAMOP_LTT(code_p, nofalts);
if (hascut)
PUT_YAMOP_CUT(code_p);
if (CurrentPred->PredFlags & SequentialPredFlag)
PUT_YAMOP_SEQ(code_p);
#endif /* YAPOR */
}
GONEXT(ld);
}
static void
a_gl_in(op_numbers opcode)
{
if (pass_no) {
code_p->opc = emit_op(opcode);
code_p->u.ldl.d = emit_a(cpc->rnd1);
code_p->u.ldl.s = emit_count(IPredArity);
code_p->u.ldl.p = (CODEADDR)CurrentPred;
#ifdef YAPOR
INIT_YAMOP_LTT(code_p, cpc->rnd2 >> 1);
if (cpc->rnd2 & 1)
PUT_YAMOP_CUT(code_p);
if (CurrentPred->PredFlags & SequentialPredFlag)
PUT_YAMOP_SEQ(code_p);
#endif /* YAPOR */
/* next op is a jump, with the jump giving the address to fail to
after this alternative */
cpc = cpc->nextInst;
code_p->u.ldl.bl = emit_ilabel(cpc->rnd1);
} else
cpc = cpc->nextInst;
GONEXT(ldl);
}
static void
#ifdef YAPOR
a_either(op_numbers opcode, CELL opr, CELL lab, int nofalts, int hascut)
#else
a_either(op_numbers opcode, CELL opr, CELL lab)
#endif /* YAPOR */
{
if (pass_no) {
Prop fe = GetPredProp(AtomTrue,0);
code_p->opc = emit_op(opcode);
code_p->u.sla.s = emit_count(opr);
code_p->u.sla.l = emit_a(lab);
/* use code for atom true so that we won't try to do anything smart */
code_p->u.sla.p = emit_a((CELL)
RepPredProp(fe));;
#ifdef YAPOR
/* code_p->u.sla.p = (CODEADDR)CurrentPred; */
INIT_YAMOP_LTT(code_p, nofalts);
if (hascut)
PUT_YAMOP_CUT(code_p);
if (CurrentPred->PredFlags & SequentialPredFlag)
PUT_YAMOP_SEQ(code_p);
if(opcode != _or_last) {
code_p->u.sla.l2 = emit_bmlabel(cpc->arnds[1]);
}
#else
code_p->u.sla.l2 = emit_bmlabel(cpc->arnds[1]);
#endif /* YAPOR */
}
GONEXT(sla);
}
static void
a_gl(op_numbers opcode)
{
#ifdef YAPOR
a_try(opcode, cpc->rnd1, IPredArity, cpc->rnd2 >> 1, cpc->rnd2 & 1);
#else
a_try(opcode, cpc->rnd1, IPredArity);
#endif /* YAPOR */
}
/*
* optimizes several unify_cons for the same constant. It must be avoided for
* the head of the first argument, because of indexing
*/
static void
a_ucons(op_numbers opcode)
{
#if AGGREGATE_OPS
PInstr *np = cpc->nextInst;
register int i = 0;
CELL my_cons = cpc->rnd1;
if (do_not_optimize_uatom) {
do_not_optimize_uatom = FALSE;
if (opcode == unify_atom_op)
a_uc(_unify_atom, _unify_atom_write);
else
a_c(_write_atom);
}
else {
while (np->op == opcode && np->rnd1 == my_cons) {
i++;
cpc = np;
np = np->nextInst;
}
if (i == 0) {
if (opcode == unify_atom_op)
a_uc(_unify_atom, _unify_atom_write);
else
a_c(_write_atom);
}
else {
if (opcode == unify_atom_op)
a_unc(_unify_n_atoms, _unify_n_atoms_write, i + 1);
else
a_nc(_write_n_atoms, i + 1);
}
}
#else
do_not_optimize_uatom = FALSE;
if (opcode == unify_atom_op)
a_uc(_unify_atom, _unify_atom_write);
else
a_c(_write_atom);
#endif
}
static void
a_uvar(void)
{
if (!is_void_var()) {
#if AGGREGATE_OPS
if (is_temp_var()) {
PInstr *np = cpc->nextInst;
if (np->op == unify_var_op &&
is_atemp_var(np)) {
a_vv(_unify_x_var2, _unify_x_var2_write);
return;
}
else if (np->op == unify_last_var_op &&
is_atemp_var(np)) {
a_vv(_unify_l_x_var2,
_unify_l_x_var2_write);
return;
}
}
#endif /* AGGREGATE_OPS */
a_uv(_unify_x_var, _unify_x_var_write);
}
else {
#if AGGREGATE_OPS
int i = 1;
PInstr *np = cpc->nextInst;
/* skip void vars */
while (np->op == unify_var_op && is_a_void(np->rnd1)) {
i++;
cpc = np;
np = np->nextInst;
}
if (np->op == unify_last_var_op &&
is_a_void(np->rnd1)) {
if (i == 0)
a_ue(_unify_l_void, _unify_l_void_write);
else
a_un(_unify_l_n_voids, _unify_l_n_voids_write, i + 1);
cpc = np;
}
else if (i == 1)
a_ue(_unify_void, _unify_void_write);
else {
a_un(_unify_n_voids, _unify_n_voids_write, i);
}
#else
a_ue(_unify_void, _unify_void_write);
#endif
}
}
static void
a_wvar(void)
{
if (!no_ref_var())
a_v(_write_x_var);
else {
#if AGGREGATE_OPS
int i = 0;
PInstr *np = cpc->nextInst;
while (np->op == write_var_op && no_ref(np->rnd1)) {
i++;
cpc = np;
np = np->nextInst;
}
if (i == 0)
a_e(_write_void);
else {
a_n(_write_n_voids, i + 1);
}
#else
a_e(_write_void);
#endif
}
}
static void
a_glist(void)
{
#if AGGREGATE_OPS
PInstr *pnext = cpc->nextInst;
if (cpc->rnd2 != 1 && (pnext->op == unify_val_op || pnext->op == unify_local_op)) {
Ventry *ve = (Ventry *) pnext->rnd1;
pnext->rnd2 = cpc->rnd2;
cpc = pnext;
Var_Ref(ve);
a_rv(_glist_valx);
}
else
if (cpc->rnd2 == 1 && pnext->op == unify_atom_op) {
do_not_optimize_uatom = TRUE;
a_r(_get_list);
}
else if (cpc->rnd2 != 1 && pnext->op == unify_var_op
&& is_a_void(pnext->rnd1)) {
PInstr *ppnext = pnext->nextInst;
if (ppnext && (ppnext->op == unify_last_var_op
|| ppnext->op == unify_last_val_op)) {
Ventry *ve = (Ventry *) ppnext->rnd1;
ppnext->rnd2 = cpc->rnd2;
cpc = ppnext;
Var_Ref(ve);
a_rv((op_numbers)((int)_gl_void_varx + (cpc->op == unify_last_var_op ? 0 : 2)));
}
else
a_r(_get_list);
}
else
#endif /* AGGREGATE_OPS */
a_r(_get_list);
}
#define NEXTOPC (cpc->nextInst)->op
static void
a_deallocate(void)
{
if (alloc_found == 2) {
/* this should never happen */
if (CurrentPred->PredFlags & LogUpdatePredFlag)
a_cle(_alloc_for_logical_pred);
a_e(_allocate);
}
if (CurrentPred->PredFlags & LogUpdatePredFlag)
a_cld(_dealloc_for_logical_pred);
if (NEXTOPC == execute_op) {
cpc = cpc->nextInst;
a_p(_dexecute);
} else
a_e(_deallocate);
dealloc_found = TRUE;
}
static void
a_bmap(void)
{
/* how much space do we need to reserve */
int i, max = (cpc->rnd1)/(8*sizeof(CELL));
fill_a((CELL)CurrentPred);
for (i = 0; i <= max; i++) fill_a(cpc->arnds[i]);
}
static void
a_bregs(void)
{
/* how much space do we need to reserve */
int i, max = (cpc->rnd1)/(8*sizeof(CELL));
fill_a(cpc->rnd1);
for (i = 0; i <= max; i++) fill_a(cpc->arnds[i]);
}
static void
copy_blob(void)
{
/* copy the blob to code space, making no effort to align if a double */
int max = cpc->rnd1, i;
for (i = 0; i < max; i++)
fill_a(cpc->arnds[i]);
}
static void
a_fetch_vv(void)
{
/* the next three instructions must be a get_val, get_val, and BIP */
if (pass_no == 0) {
PInstr *p = cpc->nextInst;
Ventry *ve;
ve = (Ventry *) p->rnd1;
if (ve->KindOfVE != PermVar)
p->op = nop_op;
p = p->nextInst;
ve = (Ventry *) p->rnd1;
if (ve->KindOfVE != PermVar)
p->op = nop_op;
} else {
PInstr *p = cpc->nextInst;
Ventry *ve;
c_type = TYPE_XX;
ve = (Ventry *) p->rnd1;
if (ve->KindOfVE == PermVar) {
/* don't get rid of get_val_op */
x1_arg = emit_x(p->rnd2);
} else {
/* and use it directly as a second argument */
x1_arg = emit_x(ve->NoOfVE & MaskVarAdrs);
}
p = p->nextInst;
ve = (Ventry *) p->rnd1;
if (ve->KindOfVE == PermVar) {
/* don't get rid of get_val_op */
x2_arg = emit_x(p->rnd2);
} else {
/* and use it directly as a second argument */
x2_arg = emit_x(ve->NoOfVE & MaskVarAdrs);
}
}
}
static void
a_fetch_vc(void)
{
/* the next two instructions must be a get_val and BIP */
if (pass_no == 0) {
PInstr *p = cpc->nextInst;
Ventry *ve;
ve = (Ventry *) p->rnd1;
if (ve->KindOfVE != PermVar)
p->op = nop_op;
} else {
PInstr *p = cpc->nextInst;
Ventry *ve;
c_type = TYPE_XC;
c_arg = (Int)(cpc->rnd1);
ve = (Ventry *) p->rnd1;
if (ve->KindOfVE == PermVar) {
/* don't get rid of get_val_op */
x1_arg = emit_x(p->rnd2);
} else {
/* and use it directly as a second argument */
x1_arg = emit_x(ve->NoOfVE & MaskVarAdrs);
}
}
}
static void
a_fetch_cv(void)
{
/* the next two instructions must be a get_val and BIP */
if (pass_no == 0) {
PInstr *p = cpc->nextInst;
Ventry *ve;
ve = (Ventry *) p->rnd1;
if (ve->KindOfVE != PermVar)
p->op = nop_op;
} else {
PInstr *p = cpc->nextInst;
Ventry *ve;
c_type = TYPE_CX;
c_arg = (Int)(cpc->rnd1);
ve = (Ventry *) p->rnd1;
if (ve->KindOfVE == PermVar) {
/* don't get rid of get_val_op */
x1_arg = emit_x(p->rnd2);
} else {
/* and use it directly as a second argument */
x1_arg = emit_x(ve->NoOfVE & MaskVarAdrs);
}
}
}
static void
a_f2(int var)
{
Int opc = cpc->rnd2;
Ventry *ve = (Ventry *)(cpc->rnd1);
int is_y_var = (ve->KindOfVE == PermVar);
if (opc <= _primitive) {
if (is_y_var) {
if (pass_no) {
code_p->u.y.y = emit_y(ve);
switch (opc) {
case _atom:
code_p->opc = opcode(_p_atom_y);
break;
case _atomic:
code_p->opc = opcode(_p_atomic_y);
break;
case _compound:
code_p->opc = opcode(_p_compound_y);
break;
case _float:
code_p->opc = opcode(_p_float_y);
break;
case _integer:
code_p->opc = opcode(_p_integer_y);
break;
case _nonvar:
code_p->opc = opcode(_p_nonvar_y);
break;
case _number:
code_p->opc = opcode(_p_number_y);
break;
case _var:
code_p->opc = opcode(_p_var_y);
break;
case _db_ref:
code_p->opc = opcode(_p_db_ref_y);
break;
case _cut_by:
code_p->opc = opcode(_p_cut_by_y);
break;
case _primitive:
code_p->opc = opcode(_p_primitive_y);
break;
}
}
GONEXT(y);
return;
} else {
if (pass_no) {
code_p->u.x.x = emit_x(ve->NoOfVE & MaskVarAdrs);
switch (opc) {
case _atom:
code_p->opc = opcode(_p_atom_x);
break;
case _atomic:
code_p->opc = opcode(_p_atomic_x);
break;
case _compound:
code_p->opc = opcode(_p_compound_x);
break;
case _float:
code_p->opc = opcode(_p_float_x);
break;
case _integer:
code_p->opc = opcode(_p_integer_x);
break;
case _nonvar:
code_p->opc = opcode(_p_nonvar_x);
break;
case _number:
code_p->opc = opcode(_p_number_x);
break;
case _var:
code_p->opc = opcode(_p_var_x);
break;
case _db_ref:
code_p->opc = opcode(_p_db_ref_x);
break;
case _cut_by:
code_p->opc = opcode(_p_cut_by_x);
break;
case _primitive:
code_p->opc = opcode(_p_primitive_x);
break;
}
}
GONEXT(x);
return;
}
}
if (is_y_var) {
switch (c_type) {
case TYPE_XX:
if (pass_no) {
switch (opc) {
case _plus:
code_p->opc = emit_op(_p_plus_y_vv);
break;
case _minus:
code_p->opc = emit_op(_p_minus_y_vv);
break;
case _times:
code_p->opc = emit_op(_p_times_y_vv);
break;
case _div:
code_p->opc = emit_op(_p_div_y_vv);
break;
case _and:
code_p->opc = emit_op(_p_and_y_vv);
break;
case _or:
code_p->opc = emit_op(_p_or_y_vv);
break;
case _sll:
code_p->opc = emit_op(_p_sll_y_vv);
break;
case _slr:
code_p->opc = emit_op(_p_slr_y_vv);
break;
}
code_p->u.yxx.y = emit_y(ve);
code_p->u.yxx.x1 = x1_arg;
code_p->u.yxx.x2 = x2_arg;
}
GONEXT(yxx);
break;
case TYPE_CX:
if (pass_no) {
switch (opc) {
case _plus:
Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for +/2");
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
case _minus:
code_p->opc = emit_op(_p_minus_y_cv);
break;
case _times:
Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for */2");
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
case _div:
code_p->opc = emit_op(_p_div_y_cv);
break;
case _and:
Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for /\\/2");
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
case _or:
Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for \\//2");
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
case _sll:
code_p->opc = emit_op(_p_sll_y_cv);
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
case _slr:
code_p->opc = emit_op(_p_slr_y_cv);
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
}
code_p->u.ycx.y = emit_y(ve);
code_p->u.ycx.c = c_arg;
code_p->u.ycx.xi = x1_arg;
}
GONEXT(ycx);
break;
case TYPE_XC:
if (pass_no) {
switch (opc) {
case _plus:
code_p->opc = emit_op(_p_plus_y_vc);
break;
case _minus:
Error(SYSTEM_ERROR, x2_arg, "internal assembler error XC for -/2");
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
case _times:
code_p->opc = emit_op(_p_times_y_vc);
break;
case _div:
code_p->opc = emit_op(_p_div_y_vc);
break;
case _and:
code_p->opc = emit_op(_p_and_y_vc);
break;
case _or:
code_p->opc = emit_op(_p_or_y_vc);
break;
case _sll:
code_p->opc = emit_op(_p_sll_y_vc);
break;
case _slr:
code_p->opc = emit_op(_p_slr_y_vc);
break;
}
code_p->u.yxc.y = emit_y(ve);
code_p->u.yxc.c = c_arg;
code_p->u.yxc.xi = x1_arg;
}
GONEXT(yxc);
break;
}
} else {
switch (c_type) {
case TYPE_XX:
if (pass_no) {
switch (opc) {
case _plus:
code_p->opc = emit_op(_p_plus_vv);
break;
case _minus:
code_p->opc = emit_op(_p_minus_vv);
break;
case _times:
code_p->opc = emit_op(_p_times_vv);
break;
case _div:
code_p->opc = emit_op(_p_div_vv);
break;
case _and:
code_p->opc = emit_op(_p_and_vv);
break;
case _or:
code_p->opc = emit_op(_p_or_vv);
break;
case _sll:
code_p->opc = emit_op(_p_sll_vv);
break;
case _slr:
code_p->opc = emit_op(_p_slr_vv);
break;
}
code_p->u.xxx.x = emit_x(ve->NoOfVE & MaskVarAdrs);
code_p->u.xxx.x1 = x1_arg;
code_p->u.xxx.x2 = x2_arg;
}
GONEXT(xxx);
break;
case TYPE_CX:
if (pass_no) {
switch (opc) {
case _plus:
Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for +/2");
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
case _minus:
code_p->opc = emit_op(_p_minus_cv);
break;
case _times:
Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for */2");
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
case _div:
code_p->opc = emit_op(_p_div_cv);
break;
case _and:
Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for /\\/2");
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
case _or:
Error(SYSTEM_ERROR, x1_arg, "internal assembler error CX for \\//2");
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
case _sll:
code_p->opc = emit_op(_p_sll_cv);
break;
case _slr:
code_p->opc = emit_op(_p_slr_cv);
break;
}
code_p->u.xxc.x = emit_x(ve->NoOfVE & MaskVarAdrs);
code_p->u.xxc.c = c_arg;
code_p->u.xxc.xi = x1_arg;
}
GONEXT(xxc);
break;
case TYPE_XC:
if (pass_no) {
switch (opc) {
case _plus:
code_p->opc = emit_op(_p_plus_vc);
break;
case _minus:
Error(SYSTEM_ERROR, x2_arg, "internal assembler error XC for -/2");
save_machine_regs();
longjmp(CompilerBotch, 1);
break;
case _times:
code_p->opc = emit_op(_p_times_vc);
break;
case _div:
code_p->opc = emit_op(_p_div_vc);
break;
case _and:
code_p->opc = emit_op(_p_and_vc);
break;
case _or:
code_p->opc = emit_op(_p_or_vc);
break;
case _sll:
code_p->opc = emit_op(_p_sll_vc);
break;
case _slr:
code_p->opc = emit_op(_p_slr_vc);
break;
}
code_p->u.xcx.x = emit_x(ve->NoOfVE & MaskVarAdrs);
code_p->u.xcx.c = c_arg;
code_p->u.xcx.xi = x1_arg;
}
GONEXT(xcx);
break;
}
}
}
#define TRYOP(G,P) (IPredArity<5 ? (op_numbers)((int)(P)+(IPredArity*3)) : (G))
#ifdef YAPOR
#define TRYCODE(G,P) a_try(TRYOP(G,P), Unsigned(code_addr) + label_offset[cpc->rnd1], IPredArity, cpc->rnd2 >> 1, cpc->rnd2 & 1);
#else
#define TRYCODE(G,P) a_try(TRYOP(G,P), Unsigned(code_addr) + label_offset[cpc->rnd1], IPredArity);
#endif /* YAPOR */
static void
do_pass(void)
{
#ifdef YAPOR
#define EITHER_INST 50
yamop *entry_code;
yamop *either_inst[EITHER_INST];
int either_cont = 0;
#endif /* YAPOR */
int log_update;
#if defined(YAPOR) || defined(THREADS)
int dynamic;
#endif
int ystop_found = FALSE;
alloc_found = dealloc_found = FALSE;
code_p = (yamop *) code_addr;
cpc = CodeStart;
comit_lab = 0L;
/* Space while for the clause flags */
log_update = CurrentPred->PredFlags & LogUpdatePredFlag;
#if defined(YAPOR) || defined(THREADS)
dynamic = CurrentPred->PredFlags & DynamicPredFlag;
#endif
if (assembling != ASSEMBLING_INDEX) {
Clause *cl_p = (Clause *)code_p;
if (pass_no) {
cl_p->u.ClValue = c_store;
cl_p->ClFlags = c_mask;
if (log_update)
cl_p->ClFlags |= LogUpdMask;
cl_p->u2.ClExt = NULL;
cl_p->Owner = YapConsultingFile();
}
code_p = (yamop *)(cl_p->ClCode);
IPredArity = cpc->rnd2; /* number of args */
#if defined(YAPOR) || defined(THREADS)
if ((dynamic||log_update) && pass_no) {
INIT_LOCK(cl_p->ClLock);
INIT_CLREF_COUNT(cl_p);
}
#endif
#ifdef YAPOR
entry_code = code_p;
a_try(TRYOP(_try_me, _try_me0), 0, IPredArity, 1, 0);
#else
a_try(TRYOP(_try_me, _try_me0), 0, IPredArity);
#endif /* YAPOR */
} else {
Clause *cl_p = (Clause *)code_p;
if (pass_no) {
cl_p->u.ClValue = TermNil;
if (log_update) {
cl_p->u2.ClUse = 0;
cl_p->ClFlags = LogUpdatePredFlag|IndexedPredFlag|IndexMask;
} else {
cl_p->u2.ClExt = NULL;
cl_p->ClFlags = c_mask|IndexMask;
}
cl_p->Owner = CurrentPred->OwnerFile;
}
code_p = (yamop *)(cl_p->ClCode);
#if defined(YAPOR) || defined(THREADS)
if ((dynamic||log_update) && pass_no) {
INIT_LOCK(cl_p->ClLock);
INIT_CLREF_COUNT(cl_p);
}
#endif
#ifdef YAPOR
entry_code = code_p;
#endif
}
while (cpc) {
switch ((int) cpc->op) {
#ifdef YAPOR
case sync_op:
a_try(_sync, cpc->rnd1, cpc->rnd2, 1, Zero);
break;
#endif /* YAPOR */
#ifdef TABLING
case table_new_answer_op:
a_n(_table_new_answer, (int) cpc->rnd2);
break;
#endif /* TABLING */
#ifdef SFUNC
case get_s_f_op:
a_rf(_get_s_f);
break;
case put_s_f_op:
a_rf(_put_s_f);
break;
case unify_s_f_op:
a_d(_unify_s_f);
break;
case write_s_f_op:
a_f(_write_s_f);
break;
case unify_s_var_op:
a_vsf(_unify_s_xvar);
break;
case write_s_var_op:
a_vsf(_write_s_xvar);
break;
case unify_s_val_op:
a_vsf(_unify_s_xval);
break;
case write_s_val_op:
a_vsf(_write_s_xval);
break;
case unify_s_a_op:
a_asf(_unify_s_a);
break;
case write_s_a_op:
a_asf(_write_s_a);
break;
case get_s_end_op:
a_n(_get_s_end, Unsigned(0));
break;
case put_s_end_op:
a_n(_put_s_end, Unsigned(0));
break;
case unify_s_end_op:
a_n(_write_s_end, Unsigned(0));
break;
case write_s_end_op:
a_n(_write_s_end, Unsigned(0));
break;
#endif
case get_var_op:
a_vr(_get_x_var);
break;
case put_var_op:
a_vr(_put_x_var);
break;
case get_val_op:
a_vr(_get_x_val);
break;
case put_val_op:
a_vr(_put_x_val);
break;
case get_num_op:
case get_atom_op:
a_rc(_get_atom);
break;
case get_float_op:
a_rb(_get_float);
break;
case get_longint_op:
a_rb(_get_longint);
break;
case get_bigint_op:
a_rb(_get_bigint);
break;
case put_num_op:
case put_atom_op:
a_rc(_put_atom);
break;
case put_float_op:
case put_longint_op:
case put_bigint_op:
a_rb(_put_atom);
break;
case get_list_op:
a_glist();
break;
case put_list_op:
a_r(_put_list);
break;
case get_struct_op:
a_rf(_get_struct);
break;
case put_struct_op:
a_rf(_put_struct);
break;
case put_unsafe_op:
a_vr((op_numbers)((int)_put_unsafe - 1));
break;
case unify_var_op:
a_uvar();
break;
case unify_last_var_op:
a_uv(_unify_l_x_var, _unify_l_x_var_write);
break;
case write_var_op:
a_wvar();
break;
case unify_local_op:
a_uv(_unify_x_loc, _unify_x_loc_write);
break;
case unify_val_op:
a_uv(_unify_x_val, _unify_x_val_write);
break;
case unify_last_local_op:
a_uv(_unify_l_x_loc, _unify_l_x_loc_write);
break;
case unify_last_val_op:
a_uv(_unify_l_x_val, _unify_l_x_val_write);
break;
case write_local_op:
a_v(_write_x_loc);
break;
case write_val_op:
a_v(_write_x_val);
break;
case unify_num_op:
case unify_atom_op:
a_ucons(unify_atom_op);
break;
case unify_float_op:
a_ublob(_unify_float, _unify_atom_write);
break;
case unify_longint_op:
a_ublob(_unify_longint, _unify_atom_write);
break;
case unify_bigint_op:
a_ublob(_unify_bigint, _unify_atom_write);
break;
case unify_last_num_op:
case unify_last_atom_op:
a_uc(_unify_l_atom, _unify_l_atom_write);
break;
case unify_last_float_op:
a_ublob(_unify_l_float, _unify_l_atom_write);
break;
case unify_last_longint_op:
a_ublob(_unify_l_longint, _unify_l_atom_write);
break;
case unify_last_bigint_op:
a_ublob(_unify_l_bigint, _unify_l_atom_write);
break;
case write_num_op:
case write_atom_op:
a_ucons(write_atom_op);
break;
case write_float_op:
case write_longint_op:
case write_bigint_op:
a_blob(_write_atom);
break;
case unify_list_op:
a_ue(_unify_list, _unify_list_write);
break;
case unify_last_list_op:
a_ue(_unify_l_list, _unify_l_list_write);
break;
case write_list_op:
a_e(_write_list);
break;
case write_last_list_op:
a_e(_write_l_list);
break;
case unify_struct_op:
a_uf(_unify_struct, _unify_struct_write);
break;
case unify_last_struct_op:
a_uf(_unify_l_struc, _unify_l_struc_write);
break;
case write_struct_op:
a_f(_write_struct);
break;
case write_last_struct_op:
a_f(_write_l_struc);
break;
case save_b_op:
case patch_b_op:
a_v(_save_b_x);
break;
case comit_b_op:
a_v(_comit_b_x);
#ifdef YAPOR
if (pass_no)
PUT_YAMOP_CUT(entry_code);
#endif /* YAPOR */
break;
case save_pair_op:
a_uv(_save_pair_x, _save_pair_x_write);
break;
case save_appl_op:
a_uv(_save_appl_x, _save_appl_x_write);
break;
case fail_op:
a_e(_op_fail);
break;
case cut_op:
a_cut();
#ifdef YAPOR
if (pass_no)
PUT_YAMOP_CUT(entry_code);
#endif /* YAPOR */
break;
case cutexit_op:
a_cut();
a_e(_procceed);
#ifdef YAPOR
if (pass_no)
PUT_YAMOP_CUT(entry_code);
#endif /* YAPOR */
break;
case allocate_op:
alloc_found = 2;
break;
case deallocate_op:
a_deallocate();
break;
case tryme_op:
TRYCODE(_try_me, _try_me0);
break;
case retryme_op:
TRYCODE(_retry_me, _retry_me0);
break;
case trustme_op:
TRYCODE(_trust_me, _trust_me0);
break;
case try_op:
if (log_update)
a_cl(_try_logical_pred);
a_gl(_try_clause);
break;
case retry_op:
a_gl(_retry);
break;
case trust_op:
if (log_update)
a_cl(_trust_logical_pred);
a_gl(_trust);
break;
case tryin_op:
a_igl(_try_in);
break;
case retryin_op:
a_gl(_retry);
break;
case trustin_op:
a_gl_in(_trust_in);
break;
case tryf_op:
if (log_update)
a_cl(_try_logical_pred);
a_gl(_try_clause);
break;
case retryf_op:
a_gl(_retry_first);
break;
case trustf_op:
if (log_update)
a_cl(_trust_logical_pred);
a_gl(_trust_first);
break;
case tryfin_op:
a_igl(_try_in);
break;
case retryfin_op:
a_gl(_retry_first);
break;
case trustfin_op:
a_gl_in(_trust_first_in);
break;
case tryt_op:
if (log_update)
a_cl(_try_logical_pred);
a_gl(_try_clause);
break;
case retryt_op:
a_gl(_retry_tail);
break;
case trustt_op:
if (log_update)
a_cl(_trust_logical_pred);
a_gl(_trust_tail);
break;
case trytin_op:
a_igl(_try_in);
break;
case retrytin_op:
a_gl(_retry_tail);
break;
case trusttin_op:
a_gl_in(_trust_tail_in);
break;
case tryh_op:
if (log_update)
a_cl(_try_logical_pred);
a_gl(_try_clause);
break;
case retryh_op:
a_gl(_retry_head);
break;
case trusth_op:
if (log_update)
a_cl(_trust_logical_pred);
a_gl(_trust_head);
break;
case tryhin_op:
a_igl(_try_in);
break;
case retryhin_op:
a_gl(_retry_head);
break;
case trusthin_op:
a_gl_in(_trust_head_in);
break;
case trylf_op:
/* now that we don't need to save the arguments this is just a
simple retry */
a_gl(_retry);
break;
/* ibd */
case trylh_op:
a_gl(_retry);
break;
case jump_op:
a_l(_jump);
break;
case restore_tmps_op:
a_l(_move_back);
break;
case restore_tmps_and_skip_op:
a_l(_skip);
break;
case procceed_op:
a_e(_procceed);
break;
case call_op:
a_p(_call);
break;
case execute_op:
a_p(_execute);
break;
case safe_call_op:
a_p(_call);
break;
case label_op:
if (!ystop_found &&
cpc->nextInst != NULL &&
cpc->nextInst->op == mark_initialised_pvars_op) {
ystop_found = TRUE;
a_e(_Ystop);
}
if (!pass_no) {
if (CellPtr(label_offset+cpc->rnd1) > ASP-256) {
save_machine_regs();
longjmp(CompilerBotch,3);
}
label_offset[cpc->rnd1] = (CELL) code_p;
}
/* reset dealloc_found in case there was a branch */
dealloc_found = FALSE;
break;
case pop_op:
if (cpc->rnd1 == 1)
a_e(_pop);
else {
a_n(_pop_n, 2 * CELLSIZE * (cpc->rnd1 - 1));
}
break;
case either_op:
check_alloc();
#ifdef YAPOR
if (pass_no)
either_inst[either_cont++] = code_p;
a_either(_either,
-Signed(RealEnvSize) - CELLSIZE * cpc->rnd2,
Unsigned(code_addr) + label_offset[cpc->rnd1], 0, 0);
#else
a_either(_either,
-Signed(RealEnvSize) - CELLSIZE * cpc->rnd2,
Unsigned(code_addr) + label_offset[cpc->rnd1]);
#endif /* YAPOR */
break;
case orelse_op:
#ifdef YAPOR
if (pass_no)
either_inst[either_cont++] = code_p;
a_either(_or_else,
-Signed(RealEnvSize) - CELLSIZE * cpc->rnd2,
Unsigned(code_addr) + label_offset[cpc->rnd1], 0, 0);
#else
a_either(_or_else,
-Signed(RealEnvSize) - CELLSIZE * cpc->rnd2,
Unsigned(code_addr) + label_offset[cpc->rnd1]);
#endif /* YAPOR */
dealloc_found = FALSE;
break;
case orlast_op:
#ifdef YAPOR
if (pass_no)
either_inst[either_cont++] = code_p;
a_either(_or_last, 0, 0, 0, 0);
if (pass_no) {
int cont = 1;
do {
either_cont--;
PUT_YAMOP_LTT(either_inst[either_cont], cont++);
} while (either_inst[either_cont]->opc != opcode(_either));
}
#else
a_e(_or_last);
#endif /* YAPOR */
dealloc_found = FALSE;
break;
case jump_v_op:
a_igl(_jump_if_var);
break;
case switch_t_op:
a_4sw(_switch_on_type);
break;
case switch_nv_op:
a_3sw(_switch_on_nonv);
break;
case switch_l_op:
a_3sws(_switch_last);
break;
case switch_h_op:
a_4sw(_switch_on_head);
break;
case switch_lnl_op:
#if USE_THREADED_CODE
a_4_lsw(_switch_list_nl);
#else
a_4sw(_switch_list_nl);
#endif
break;
case switch_nvl_op:
a_3sw(_switch_nv_list);
break;
case switch_ll_op:
a_3sws(_switch_l_list);
break;
case switch_c_op:
a_hx(_switch_on_cons);
break;
case switch_f_op:
a_hx(_switch_on_func);
break;
case if_c_op:
a_if(_if_cons);
break;
case if_f_op:
a_if(_if_func);
break;
case go_c_op:
a_go(_go_on_cons);
break;
case go_f_op:
a_go(_go_on_func);
break;
case if_not_op:
a_go(_if_not_then);
break;
case mark_initialised_pvars_op:
a_bmap();
break;
case mark_live_regs_op:
a_bregs();
break;
case comit_opt_op:
comit_lab = cpc->rnd1;
break;
case fetch_args_vv_op:
a_fetch_vv();
break;
case fetch_args_vc_op:
a_fetch_vc();
break;
case fetch_args_cv_op:
a_fetch_cv();
break;
case f_val_op:
a_f2(FALSE);
break;
case f_var_op:
a_f2(TRUE);
break;
case enter_profiling_op:
a_pl(_enter_profiling, (PredEntry *)(cpc->rnd1));
break;
case retry_profiled_op:
a_pl(_retry_profiled, (PredEntry *)(cpc->rnd1));
break;
case fetch_args_for_bccall:
if (cpc->nextInst->op != bccall_op) {
Error(SYSTEM_ERROR, TermNil, "compiling binary test", (int) cpc->op);
save_machine_regs();
longjmp(CompilerBotch, 1);
}
a_bfunc(cpc->nextInst->rnd2);
break;
case blob_op:
/* install a blob */
copy_blob();
break;
case empty_call_op:
/* create an empty call */
a_empty_call();
break;
case push_or_op:
case pop_or_op:
case pushpop_or_op:
case nop_op:
case name_op:
break;
default:
Error(SYSTEM_ERROR, TermNil, "instruction %d found while assembling", (int) cpc->op);
save_machine_regs();
longjmp(CompilerBotch, 1);
}
cpc = cpc->nextInst;
}
if (!ystop_found)
a_e(_Ystop);
}
CODEADDR
assemble(int mode)
{
/*
* the assembly proccess is done in two passes: 1 - a first pass
* computes labels offsets and total code size 2 - the second pass
* produces the final version of the code
*/
int *workspace = (int *)freep;
CELL size;
code_addr = NIL;
assembling = mode;
label_offset = workspace;
pass_no = 0;
asm_error = FALSE;
do_pass();
if (asm_error) {
Error_TYPE = SYSTEM_ERROR;
ErrorMessage = "internal assembler error";
return (NIL);
}
pass_no = 1;
YAPEnterCriticalSection();
#ifdef KEEP_ENTRY_AGE
{
size =
(CELL)NEXTOP(NEXTOP(NEXTOP((yamop *)(((Clause *)NULL)->ClCode),ld),sla),e);
if ((CELL)code_p > size)
size = (CELL)code_p;
}
#else
size = (CELL)code_p;
#endif
while ((code_addr = (CODEADDR) AllocCodeSpace(size)) == NULL) {
growheap(TRUE);
}
do_pass();
YAPLeaveCriticalSection();
{
Clause *cl = (Clause *)code_addr; /* lcc, why? */
return((CODEADDR)(cl->ClCode));
}
}