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e00722533b25ea353e4c3adcc178f00a92fcfbf3
mercury/runtime/mercury_layout_util.c
Zoltan Somogyi e35a09542e Print two kinds of ambiguities only if asked for. 
trace/mercury_trace_cmd_developer.c:
trace/mercury_trace_tables.[ch]:
    Add two options to the mdb command "ambiguity".

    Print ambiguities between function and predicate forms of the same
    operation, such as list.length, only if the new option -b, or
    --both-pred-and-func, is given.

    Print ambiguities involving procedures that were created by type
    specialization only if the new option -s, or --typespec is given.
    (The -t option name was already taken.)

    These changes remove from the ambiguity command's output
    (some of) the parts that are not useful when one wants to eliminate
    ambiguities by renaming.

    Clarify a heading.

doc/user_guide.texi:
    Document the above changes.

runtime/mercury_proc_id.h:
    Fix a field name that has become misleading.

    MR_UserProcId_Structs have a field named MR_user_arity.
    In this name, the "MR_user_" part is a prefix shared by the other
    fields in that structure, to indicate that they are part of the id
    of a user-defined procedure, as opposed to a compiler-created
    unify, compare or index procedure. However, the arity it contains
    is what the compiler now calls a pred_form_arity: it does not count
    type_info and typeclass_info arguments added by polymorphism, but
    it *does* count function return values for functions. This is now
    misleading, because in the compiler, a user_arity does *not* count
    function return values for functions.

    Replace this field name with MR_user_pred_form_arity, which tells
    readers that this arity is a pred_form_arity. The presence of the
    "user" part of the name may still cause some confusion, but at least
    that confusion should motivate readers to look up the field name,
    whose comment should clarify things.

mdbcomp/rtti_access.m:
runtime/mercury_debug.c:
runtime/mercury_deep_profiling.c:
runtime/mercury_ho_call.c:
runtime/mercury_layout_util.c:
runtime/mercury_ml_expand_body.h:
runtime/mercury_stack_layout.h:
runtime/mercury_trace_base.c:
trace/mercury_trace.c:
trace/mercury_trace_external.c:
trace/mercury_trace_util.c:
    Conform to the change in mercury_proc_id.h.

tests/debugger/ambiguity.{m,inp,exp}:
tests/debugger/ambiguity_helper.m:
    Expand this test case to test the new functionality.
    The type specialized predicates are in a new helper module,
    because this is the simplest way to avoid dead procedure elimination
    deleting any of the predicates whose names we want to test for ambiguities.
2022-07-05 08:00:12 +10:00

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// vim: ts=4 sw=4 expandtab ft=c
// Copyright (C) 1998-2007, 2009, 2012 The University of Melbourne.
// Copyright (C) 2013, 2015-2016, 2018 The Mercury team.
// This file is distributed under the terms specified in COPYING.LIB.
// This file implements utilities that can be useful
// for both the internal and external debuggers.
//
// Main authors: Zoltan Somogyi and Fergus Henderson.
#include "mercury_imp.h"
#include "mercury_stack_layout.h"
#include "mercury_layout_util.h"
static MR_Word MR_lookup_closure_long_lval(MR_LongLval locn,
MR_Closure *closure, MR_bool *succeeded);
static MR_Word MR_lookup_typeclass_info_long_lval(MR_LongLval locn,
MR_Word typeclass_info, MR_bool *succeeded);
static MR_Word MR_lookup_answer_block_long_lval(MR_LongLval locn,
MR_Word *answer_block, int block_size, MR_bool *succeeded);
void
MR_copy_regs_to_saved_regs(int max_mr_num, MR_Word *saved_regs,
int max_f_num, MR_Float *saved_f_regs)
{
// In the process of browsing within the debugger, we call Mercury,
// which may clobber the contents of the virtual machine registers,
// both control and general purpose, and both real and virtual
// registers. We must therefore save and restore these.
// We store them in the saved_regs array.
//
// The call to MR_trace will clobber the transient registers
// on architectures that have them. The compiler generated code
// will therefore call MR_save_transient_registers to save the
// transient registers in the fake_reg array. We here restore them
// to the real registers, save them with the other registers back in
// fake_reg, and then copy all fake_reg entries to saved_regs.
//
// If float registers are used, we must save them as well.
// We never use real machine registers for floats so we just have
// to copy them from the MR_float_reg array.
int i;
MR_restore_transient_registers();
MR_save_registers();
for (i = 0; i <= max_mr_num; i++) {
saved_regs[i] = MR_fake_reg[i];
}
#ifdef MR_BOXED_FLOAT
for (i = 0; i <= max_f_num; i++) {
saved_f_regs[i] = MR_float_reg[i];
}
#else
(void) max_f_num;
(void) saved_f_regs;
#endif
}
void
MR_copy_saved_regs_to_regs(int max_mr_num, MR_Word *saved_regs,
int max_f_num, MR_Float *saved_f_regs)
{
// We execute the converse procedure to MR_copy_regs_to_saved_regs.
// The MR_save_transient_registers is there so that a call to the
// MR_restore_transient_registers macro after MR_trace will do the
// right thing.
int i;
for (i = 0; i <= max_mr_num; i++) {
MR_fake_reg[i] = saved_regs[i];
}
#ifdef MR_BOXED_FLOAT
for (i = 0; i <= max_f_num; i++) {
MR_float_reg[i] = saved_f_regs[i];
}
#else
(void) max_f_num;
(void) saved_f_regs;
#endif
MR_restore_registers();
MR_save_transient_registers();
}
MR_TypeInfoParams
MR_materialize_type_params(const MR_LabelLayout *label_layout,
MR_Word *saved_regs)
{
return MR_materialize_type_params_base(label_layout, saved_regs,
MR_saved_sp(saved_regs), MR_saved_curfr(saved_regs));
}
MR_TypeInfoParams
MR_materialize_type_params_base(const MR_LabelLayout *label_layout,
MR_Word *saved_regs, MR_Word *base_sp, MR_Word *base_curfr)
{
const MR_TypeParamLocns *tvar_locns;
tvar_locns = label_layout->MR_sll_tvars;
if (tvar_locns != NULL) {
MR_TypeInfoParams type_params;
MR_bool succeeded;
MR_Integer count;
int i;
count = tvar_locns->MR_tp_param_count;
type_params = (MR_TypeInfoParams) MR_NEW_ARRAY(MR_Word, count + 1);
for (i = 0; i < count; i++) {
if (tvar_locns->MR_tp_param_locns[i] != 0) {
type_params[i + 1] = (MR_TypeInfo)
MR_lookup_long_lval_base(tvar_locns->MR_tp_param_locns[i],
saved_regs, base_sp, base_curfr, NULL, &succeeded);
if (! succeeded) {
MR_fatal_error("missing type param in "
"MR_materialize_type_params_base");
}
}
}
return type_params;
} else {
return NULL;
}
}
MR_TypeInfoParams
MR_materialize_closure_type_params(MR_Closure *closure)
{
const MR_TypeParamLocns *tvar_locns;
tvar_locns = closure->MR_closure_layout->MR_closure_type_params;
if (tvar_locns != NULL) {
MR_TypeInfoParams type_params;
MR_bool succeeded;
MR_Integer count;
int i;
count = tvar_locns->MR_tp_param_count;
type_params = (MR_TypeInfoParams) MR_NEW_ARRAY(MR_Word, count + 1);
for (i = 0; i < count; i++) {
if (tvar_locns->MR_tp_param_locns[i] != 0) {
type_params[i + 1] = (MR_TypeInfo)
MR_lookup_closure_long_lval(
tvar_locns->MR_tp_param_locns[i], closure, &succeeded);
if (! succeeded) {
MR_fatal_error("missing type param in "
"MR_materialize_closure_type_params");
}
}
}
return type_params;
} else {
return NULL;
}
}
MR_TypeInfoParams
MR_materialize_typeclass_info_type_params(MR_Word typeclass_info,
MR_Closure_Layout *closure_layout)
{
const MR_TypeParamLocns *tvar_locns;
tvar_locns = closure_layout->MR_closure_type_params;
if (tvar_locns != NULL) {
MR_TypeInfoParams type_params;
MR_bool succeeded;
MR_Integer count;
int i;
count = tvar_locns->MR_tp_param_count;
type_params = (MR_TypeInfoParams) MR_NEW_ARRAY(MR_Word, count + 1);
for (i = 0; i < count; i++) {
if (tvar_locns->MR_tp_param_locns[i] != 0)
{
type_params[i + 1] = (MR_TypeInfo)
MR_lookup_typeclass_info_long_lval(
tvar_locns->MR_tp_param_locns[i],
typeclass_info, &succeeded);
if (! succeeded) {
MR_fatal_error("missing type param in "
"MR_materialize_typeclass_info_type_params");
}
}
}
return type_params;
} else {
return NULL;
}
}
MR_TypeInfoParams
MR_materialize_answer_block_type_params(const MR_TypeParamLocns *tvar_locns,
MR_Word *answer_block, int block_size)
{
if (tvar_locns != NULL) {
MR_TypeInfoParams type_params;
MR_bool succeeded;
MR_Integer count;
int i;
count = tvar_locns->MR_tp_param_count;
type_params = (MR_TypeInfoParams) MR_NEW_ARRAY(MR_Word, count + 1);
for (i = 0; i < count; i++) {
if (tvar_locns->MR_tp_param_locns[i] != 0) {
type_params[i + 1] = (MR_TypeInfo)
MR_lookup_answer_block_long_lval(
tvar_locns->MR_tp_param_locns[i], answer_block,
block_size, &succeeded);
if (! succeeded) {
MR_fatal_error("missing type param in "
"MR_materialize_answer_block_type_params");
}
}
}
return type_params;
} else {
return NULL;
}
}
int
MR_get_register_number_long(MR_LongLval locn)
{
MR_LongLvalType type;
type = MR_LONG_LVAL_TYPE(locn);
if (type == MR_LONG_LVAL_TYPE_R || type == MR_LONG_LVAL_TYPE_F) {
return MR_LONG_LVAL_NUMBER(locn);
} else {
return -1;
}
}
int
MR_get_register_number_short(MR_ShortLval locn)
{
if (MR_SHORT_LVAL_TYPE(locn) == MR_SHORT_LVAL_TYPE_R) {
return locn >> MR_SHORT_LVAL_TAGBITS;
} else {
return -1;
}
}
#ifdef MR_DEBUG_LVAL_REP
#define MR_print_locn MR_printlocndebug
#else
#define MR_print_locn MR_FALSE
#endif
MR_Word
MR_lookup_long_lval(MR_LongLval locn, MR_Word *saved_regs,
MR_Float *saved_f_regs, MR_bool *succeeded)
{
return MR_lookup_long_lval_base(locn, saved_regs,
MR_saved_sp(saved_regs), MR_saved_curfr(saved_regs),
saved_f_regs, succeeded);
}
static MR_Word
MR_lookup_closure_long_lval(MR_LongLval locn, MR_Closure *closure,
MR_bool *succeeded)
{
int locn_num;
int num_r_args;
int num_f_args;
int offset;
MR_Word value;
MR_Word baseaddr;
MR_LongLval indirect_lval;
MR_LongLval sublocn;
*succeeded = MR_FALSE;
value = 0;
locn_num = (int) MR_LONG_LVAL_NUMBER(locn);
switch (MR_LONG_LVAL_TYPE(locn)) {
case MR_LONG_LVAL_TYPE_R:
if (MR_print_locn) {
printf("closure r%d\n", locn_num);
}
num_r_args = MR_closure_num_hidden_r_args(closure);
if (locn_num <= num_r_args) {
value = closure->MR_closure_hidden_args(locn_num);
*succeeded = MR_TRUE;
}
break;
case MR_LONG_LVAL_TYPE_F:
if (MR_print_locn) {
printf("closure f%d\n", locn_num);
}
num_r_args = MR_closure_num_hidden_r_args(closure);
num_f_args = MR_closure_num_hidden_f_args(closure);
if (locn_num <= num_f_args) {
value = closure->MR_closure_hidden_args(num_r_args + locn_num);
*succeeded = MR_TRUE;
}
break;
case MR_LONG_LVAL_TYPE_STACKVAR:
if (MR_print_locn) {
printf("closure stackvar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_FRAMEVAR:
if (MR_print_locn) {
printf("closure framevar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_DOUBLE_STACKVAR:
if (MR_print_locn) {
printf("closure double stackvar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_DOUBLE_FRAMEVAR:
if (MR_print_locn) {
printf("closure double framevar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_SUCCIP:
if (MR_print_locn) {
printf("closure succip\n");
}
break;
case MR_LONG_LVAL_TYPE_MAXFR:
if (MR_print_locn) {
printf("closure maxfr\n");
}
break;
case MR_LONG_LVAL_TYPE_CURFR:
if (MR_print_locn) {
printf("closure curfr\n");
}
break;
case MR_LONG_LVAL_TYPE_HP:
if (MR_print_locn) {
printf("closure hp\n");
}
break;
case MR_LONG_LVAL_TYPE_SP:
if (MR_print_locn) {
printf("closure sp\n");
}
break;
case MR_LONG_LVAL_TYPE_INDIRECT:
indirect_lval = locn_num;
offset = MR_LONG_LVAL_INDIRECT_OFFSET(indirect_lval);
sublocn = MR_LONG_LVAL_INDIRECT_BASE_LVAL_INT(indirect_lval);
if (MR_print_locn) {
printf("closure offset %d from ", offset);
}
baseaddr = MR_lookup_closure_long_lval(sublocn, closure,
succeeded);
if (! *succeeded) {
break;
}
value = MR_typeclass_info_param_type_info(baseaddr, offset);
*succeeded = MR_TRUE;
break;
case MR_LONG_LVAL_TYPE_CONS_0:
case MR_LONG_LVAL_TYPE_CONS_1:
case MR_LONG_LVAL_TYPE_CONS_2:
case MR_LONG_LVAL_TYPE_CONS_3:
case MR_LONG_LVAL_TYPE_CONS_4:
case MR_LONG_LVAL_TYPE_CONS_5:
case MR_LONG_LVAL_TYPE_CONS_6:
case MR_LONG_LVAL_TYPE_CONS_7:
value = MR_LONG_LVAL_CONST(locn);
*succeeded = MR_TRUE;
break;
case MR_LONG_LVAL_TYPE_UNKNOWN:
if (MR_print_locn) {
printf("closure unknown\n");
}
break;
default:
if (MR_print_locn) {
printf("closure DEFAULT\n");
}
break;
}
return value;
}
static MR_Word
MR_lookup_typeclass_info_long_lval(MR_LongLval locn, MR_Word typeclass_info,
MR_bool *succeeded)
{
int locn_num;
int offset;
MR_Word value;
MR_Word baseaddr;
MR_LongLval indirect_lval;
MR_LongLval sublocn;
*succeeded = MR_FALSE;
value = 0;
locn_num = (int) MR_LONG_LVAL_NUMBER(locn);
switch (MR_LONG_LVAL_TYPE(locn)) {
case MR_LONG_LVAL_TYPE_R:
if (MR_print_locn) {
printf("typeclassinfo r%d\n", locn_num);
}
if (locn_num <=
MR_typeclass_info_num_extra_instance_args(typeclass_info))
{
value = MR_typeclass_info_arg_typeclass_info(typeclass_info,
locn_num);
*succeeded = MR_TRUE;
}
break;
case MR_LONG_LVAL_TYPE_F:
if (MR_print_locn) {
printf("typeclassinfo f%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_STACKVAR:
if (MR_print_locn) {
printf("typeclassinfo stackvar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_FRAMEVAR:
if (MR_print_locn) {
printf("typeclassinfo framevar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_DOUBLE_STACKVAR:
if (MR_print_locn) {
printf("typeclassinfo double stackvar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_DOUBLE_FRAMEVAR:
if (MR_print_locn) {
printf("typeclassinfo double framevar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_SUCCIP:
if (MR_print_locn) {
printf("typeclassinfo succip\n");
}
break;
case MR_LONG_LVAL_TYPE_MAXFR:
if (MR_print_locn) {
printf("typeclassinfo maxfr\n");
}
break;
case MR_LONG_LVAL_TYPE_CURFR:
if (MR_print_locn) {
printf("typeclassinfo curfr\n");
}
break;
case MR_LONG_LVAL_TYPE_HP:
if (MR_print_locn) {
printf("typeclassinfo hp\n");
}
break;
case MR_LONG_LVAL_TYPE_SP:
if (MR_print_locn) {
printf("typeclassinfo sp\n");
}
break;
case MR_LONG_LVAL_TYPE_INDIRECT:
indirect_lval = locn_num;
offset = MR_LONG_LVAL_INDIRECT_OFFSET(indirect_lval);
sublocn = MR_LONG_LVAL_INDIRECT_BASE_LVAL_INT(indirect_lval);
if (MR_print_locn) {
printf("typeclassinfo offset %d from ", offset);
}
baseaddr = MR_lookup_typeclass_info_long_lval(sublocn,
typeclass_info, succeeded);
if (! *succeeded) {
break;
}
value = MR_typeclass_info_param_type_info(baseaddr, offset);
*succeeded = MR_TRUE;
break;
case MR_LONG_LVAL_TYPE_CONS_0:
case MR_LONG_LVAL_TYPE_CONS_1:
case MR_LONG_LVAL_TYPE_CONS_2:
case MR_LONG_LVAL_TYPE_CONS_3:
case MR_LONG_LVAL_TYPE_CONS_4:
case MR_LONG_LVAL_TYPE_CONS_5:
case MR_LONG_LVAL_TYPE_CONS_6:
case MR_LONG_LVAL_TYPE_CONS_7:
value = MR_LONG_LVAL_CONST(locn);
*succeeded = MR_TRUE;
break;
case MR_LONG_LVAL_TYPE_UNKNOWN:
if (MR_print_locn) {
printf("typeclassinfo unknown\n");
}
break;
default:
if (MR_print_locn) {
printf("typeclassinfo DEFAULT\n");
}
break;
}
return value;
}
static MR_Word
MR_lookup_answer_block_long_lval(MR_LongLval locn, MR_Word *answer_block,
int block_size, MR_bool *succeeded)
{
int locn_num;
int offset;
MR_Word value;
MR_Word baseaddr;
MR_LongLval indirect_lval;
MR_LongLval sublocn;
*succeeded = MR_FALSE;
value = 0;
locn_num = (int) MR_LONG_LVAL_NUMBER(locn);
switch (MR_LONG_LVAL_TYPE(locn)) {
case MR_LONG_LVAL_TYPE_R:
if (MR_print_locn) {
printf("answer_block r%d\n", locn_num);
}
if (locn_num <= block_size) {
value = answer_block[locn_num];
*succeeded = MR_TRUE;
}
break;
case MR_LONG_LVAL_TYPE_F:
if (MR_print_locn) {
printf("answer_block f%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_STACKVAR:
if (MR_print_locn) {
printf("answer_block stackvar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_FRAMEVAR:
if (MR_print_locn) {
printf("answer_block framevar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_DOUBLE_STACKVAR:
if (MR_print_locn) {
printf("answer_block double stackvar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_DOUBLE_FRAMEVAR:
if (MR_print_locn) {
printf("answer_block double framevar%d\n", locn_num);
}
break;
case MR_LONG_LVAL_TYPE_SUCCIP:
if (MR_print_locn) {
printf("answer_block succip\n");
}
break;
case MR_LONG_LVAL_TYPE_MAXFR:
if (MR_print_locn) {
printf("answer_block maxfr\n");
}
break;
case MR_LONG_LVAL_TYPE_CURFR:
if (MR_print_locn) {
printf("answer_block curfr\n");
}
break;
case MR_LONG_LVAL_TYPE_HP:
if (MR_print_locn) {
printf("answer_block hp\n");
}
break;
case MR_LONG_LVAL_TYPE_SP:
if (MR_print_locn) {
printf("answer_block sp\n");
}
break;
case MR_LONG_LVAL_TYPE_INDIRECT:
indirect_lval = locn_num;
offset = MR_LONG_LVAL_INDIRECT_OFFSET(indirect_lval);
sublocn = MR_LONG_LVAL_INDIRECT_BASE_LVAL_INT(indirect_lval);
if (MR_print_locn) {
printf("answer_block offset %d from ", offset);
}
baseaddr = MR_lookup_answer_block_long_lval(sublocn, answer_block,
block_size, succeeded);
if (! *succeeded) {
break;
}
value = MR_typeclass_info_param_type_info(baseaddr, offset);
*succeeded = MR_TRUE;
break;
case MR_LONG_LVAL_TYPE_CONS_0:
case MR_LONG_LVAL_TYPE_CONS_1:
case MR_LONG_LVAL_TYPE_CONS_2:
case MR_LONG_LVAL_TYPE_CONS_3:
case MR_LONG_LVAL_TYPE_CONS_4:
case MR_LONG_LVAL_TYPE_CONS_5:
case MR_LONG_LVAL_TYPE_CONS_6:
case MR_LONG_LVAL_TYPE_CONS_7:
value = MR_LONG_LVAL_CONST(locn);
*succeeded = MR_TRUE;
break;
case MR_LONG_LVAL_TYPE_UNKNOWN:
if (MR_print_locn) {
printf("answer_block unknown\n");
}
break;
default:
if (MR_print_locn) {
printf("answer_block DEFAULT\n");
}
break;
}
return value;
}
MR_Word
MR_lookup_long_lval_base(MR_LongLval locn, MR_Word *saved_regs,
MR_Word *base_sp, MR_Word *base_curfr, MR_Float *saved_f_regs,
MR_bool *succeeded)
{
int locn_num;
int offset;
MR_Word value;
MR_Word baseaddr;
MR_LongLval indirect_lval;
MR_LongLval sublocn;
*succeeded = MR_FALSE;
value = 0;
locn_num = (int) MR_LONG_LVAL_NUMBER(locn);
switch (MR_LONG_LVAL_TYPE(locn)) {
case MR_LONG_LVAL_TYPE_R:
if (MR_print_locn) {
printf("long r%d\n", locn_num);
}
if (saved_regs != NULL) {
value = MR_saved_reg_value(saved_regs, locn_num);
*succeeded = MR_TRUE;
}
break;
case MR_LONG_LVAL_TYPE_F:
if (MR_print_locn) {
printf("long f%d\n", locn_num);
}
#ifdef MR_BOXED_FLOAT
if (saved_f_regs != NULL) {
MR_Float f = MR_saved_f_reg_value(saved_f_regs, locn_num);
value = MR_float_to_word(f);
*succeeded = MR_TRUE;
}
#endif
break;
case MR_LONG_LVAL_TYPE_STACKVAR:
if (MR_print_locn) {
printf("long stackvar%d\n", locn_num);
}
value = MR_based_stackvar(base_sp, locn_num);
*succeeded = MR_TRUE;
break;
case MR_LONG_LVAL_TYPE_FRAMEVAR:
if (MR_print_locn) {
printf("long framevar%d\n", locn_num);
}
value = MR_based_framevar(base_curfr, locn_num);
*succeeded = MR_TRUE;
break;
case MR_LONG_LVAL_TYPE_DOUBLE_STACKVAR:
if (MR_print_locn) {
printf("long double stackvar%d\n", locn_num);
}
#ifdef MR_BOXED_FLOAT
value = MR_float_to_word(MR_float_from_dword(
MR_based_stackvar(base_sp, locn_num + 1),
MR_based_stackvar(base_sp, locn_num)));
*succeeded = MR_TRUE;
#endif
break;
case MR_LONG_LVAL_TYPE_DOUBLE_FRAMEVAR:
if (MR_print_locn) {
printf("long double framevar%d\n", locn_num);
}
#ifdef MR_BOXED_FLOAT
value = MR_float_to_word(MR_float_from_dword(
MR_based_framevar(base_curfr, locn_num + 1),
MR_based_framevar(base_curfr, locn_num)));
*succeeded = MR_TRUE;
#endif
break;
case MR_LONG_LVAL_TYPE_SUCCIP:
if (MR_print_locn) {
printf("long succip\n");
}
break;
case MR_LONG_LVAL_TYPE_MAXFR:
if (MR_print_locn) {
printf("long maxfr\n");
}
break;
case MR_LONG_LVAL_TYPE_CURFR:
if (MR_print_locn) {
printf("long curfr\n");
}
break;
case MR_LONG_LVAL_TYPE_HP:
if (MR_print_locn) {
printf("long hp\n");
}
break;
case MR_LONG_LVAL_TYPE_SP:
if (MR_print_locn) {
printf("long sp\n");
}
break;
case MR_LONG_LVAL_TYPE_INDIRECT:
indirect_lval = locn_num;
offset = MR_LONG_LVAL_INDIRECT_OFFSET(indirect_lval);
sublocn = MR_LONG_LVAL_INDIRECT_BASE_LVAL_INT(indirect_lval);
if (MR_print_locn) {
printf("long offset %d from ", offset);
}
baseaddr = MR_lookup_long_lval_base(sublocn, saved_regs,
base_sp, base_curfr, saved_f_regs, succeeded);
if (! *succeeded) {
break;
}
value = MR_typeclass_info_param_type_info(baseaddr, offset);
*succeeded = MR_TRUE;
break;
case MR_LONG_LVAL_TYPE_CONS_0:
case MR_LONG_LVAL_TYPE_CONS_1:
case MR_LONG_LVAL_TYPE_CONS_2:
case MR_LONG_LVAL_TYPE_CONS_3:
case MR_LONG_LVAL_TYPE_CONS_4:
case MR_LONG_LVAL_TYPE_CONS_5:
case MR_LONG_LVAL_TYPE_CONS_6:
case MR_LONG_LVAL_TYPE_CONS_7:
value = MR_LONG_LVAL_CONST(locn);
*succeeded = MR_TRUE;
break;
case MR_LONG_LVAL_TYPE_UNKNOWN:
if (MR_print_locn) {
printf("long unknown\n");
}
break;
default:
if (MR_print_locn) {
printf("long DEFAULT\n");
}
break;
}
return value;
}
MR_Word
MR_lookup_short_lval(MR_ShortLval locn, MR_Word *saved_regs,
MR_bool *succeeded)
{
return MR_lookup_short_lval_base(locn, saved_regs,
MR_saved_sp(saved_regs), MR_saved_curfr(saved_regs), succeeded);
}
MR_Word
MR_lookup_short_lval_base(MR_ShortLval locn, MR_Word *saved_regs,
MR_Word *base_sp, MR_Word *base_curfr, MR_bool *succeeded)
{
int locn_num;
MR_Word value;
*succeeded = MR_FALSE;
value = 0;
locn_num = (int) locn >> MR_SHORT_LVAL_TAGBITS;
switch (MR_SHORT_LVAL_TYPE(locn)) {
case MR_SHORT_LVAL_TYPE_R:
if (MR_print_locn) {
printf("short r%d\n", locn_num);
}
if (saved_regs != NULL) {
value = MR_saved_reg_value(saved_regs, locn_num);
*succeeded = MR_TRUE;
}
break;
case MR_SHORT_LVAL_TYPE_STACKVAR:
if (MR_print_locn) {
printf("short stackvar%d\n", locn_num);
}
value = MR_based_stackvar(base_sp, locn_num);
*succeeded = MR_TRUE;
break;
case MR_SHORT_LVAL_TYPE_FRAMEVAR:
if (MR_print_locn) {
printf("short framevar%d\n", locn_num);
}
value = MR_based_framevar(base_curfr, locn_num);
*succeeded = MR_TRUE;
break;
case MR_SHORT_LVAL_TYPE_SPECIAL:
switch (locn_num) {
case MR_LONG_LVAL_TYPE_SUCCIP:
if (MR_print_locn) {
printf("short succip\n");
}
break;
case MR_LONG_LVAL_TYPE_MAXFR:
if (MR_print_locn) {
printf("short maxfr\n");
}
break;
case MR_LONG_LVAL_TYPE_CURFR:
if (MR_print_locn) {
printf("short curfr\n");
}
break;
case MR_LONG_LVAL_TYPE_HP:
if (MR_print_locn) {
printf("short hp\n");
}
break;
case MR_LONG_LVAL_TYPE_SP:
if (MR_print_locn) {
printf("short sp\n");
}
break;
default:
if (MR_print_locn) {
printf("short spec DEFAULT\n");
}
}
default:
MR_fatal_error("MR_lookup_short_lval_base: bad type");
}
return value;
}
MR_bool
MR_get_type_and_value(const MR_LabelLayout *label_layout, int i,
MR_Word *saved_regs, MR_Float *saved_f_regs,
MR_TypeInfo *type_params, MR_TypeInfo *type_info,
MR_Word *value)
{
return MR_get_type_and_value_base(label_layout, i, saved_regs,
MR_saved_sp(saved_regs), MR_saved_curfr(saved_regs), saved_f_regs,
type_params, type_info, value);
}
MR_bool
MR_get_type_and_value_base(const MR_LabelLayout *label_layout, int i,
MR_Word *saved_regs, MR_Word *base_sp, MR_Word *base_curfr,
MR_Float *saved_f_regs,
MR_TypeInfo *type_params, MR_TypeInfo *type_info, MR_Word *value)
{
MR_PseudoTypeInfo pseudo_type_info;
MR_bool succeeded;
MR_LongLval long_locn;
MR_ShortLval short_locn;
int num_longs;
pseudo_type_info = MR_var_pti(label_layout, i);
*type_info = MR_create_type_info(type_params, pseudo_type_info);
num_longs = MR_long_desc_var_count(label_layout);
if (i < num_longs) {
if (MR_print_locn) {
printf("looking up long lval: ");
}
long_locn = MR_long_desc_var_locn(label_layout, i);
*value = MR_lookup_long_lval_base(long_locn,
saved_regs, base_sp, base_curfr, saved_f_regs,
&succeeded);
} else {
if (MR_print_locn) {
printf("looking up short lval: ");
}
short_locn = MR_short_desc_var_locn(label_layout, i - num_longs),
*value = MR_lookup_short_lval_base(short_locn,
saved_regs, base_sp, base_curfr, &succeeded);
}
return succeeded;
}
MR_bool
MR_get_type(const MR_LabelLayout *label_layout, int i, MR_Word *saved_regs,
MR_TypeInfo *type_params, MR_TypeInfo *type_info)
{
return MR_get_type_base(label_layout, i, saved_regs,
MR_saved_sp(saved_regs), MR_saved_curfr(saved_regs),
type_params, type_info);
}
MR_bool
MR_get_type_base(const MR_LabelLayout *label_layout, int i,
MR_Word *saved_regs, MR_Word *base_sp, MR_Word *base_curfr,
MR_TypeInfo *type_params, MR_TypeInfo *type_info)
{
MR_PseudoTypeInfo pseudo_type_info;
pseudo_type_info = MR_var_pti(label_layout, i);
*type_info = MR_create_type_info(type_params, pseudo_type_info);
return MR_TRUE;
}
void
MR_write_variable(MR_TypeInfo type_info, MR_Word value)
{
MercuryFilePtr stdout_stream;
(*MR_io_stdout_stream)(&stdout_stream);
(*MR_io_print_to_stream)((MR_Word) type_info, stdout_stream, value);
}
void
MR_generate_proc_name_from_layout(const MR_ProcLayout *proc_layout,
MR_ConstString *proc_name_ptr, int *arity_ptr, MR_Word *is_func_ptr)
{
if (MR_PROC_LAYOUT_IS_UCI(proc_layout)) {
*proc_name_ptr = proc_layout->MR_sle_proc_id.
MR_proc_uci.MR_uci_pred_name;
if (MR_streq(*proc_name_ptr, "__Unify__")) {
*arity_ptr = 2;
} else if (MR_streq(*proc_name_ptr, "__Compare__")) {
*arity_ptr = 3;
} else if (MR_streq(*proc_name_ptr, "__Index__")) {
*arity_ptr = 2;
} else {
MR_fatal_error("MR_generate_proc_name_from_layout: "
"bad MR_comp_pred_name");
}
*is_func_ptr = MR_BOOL_NO;
} else {
*proc_name_ptr = proc_layout->MR_sle_proc_id.MR_proc_user.MR_user_name;
*arity_ptr = proc_layout->MR_sle_proc_id.
MR_proc_user.MR_user_pred_form_arity;
if (proc_layout->MR_sle_user.MR_user_pred_or_func == MR_FUNCTION) {
*is_func_ptr = MR_BOOL_YES;
} else {
*is_func_ptr = MR_BOOL_NO;
}
}
}
void
MR_proc_id_arity_addedargs_predfunc(const MR_ProcLayout *proc, int *arity_ptr,
int *num_added_args_ptr, MR_PredFunc *pred_or_func_ptr)
{
if (MR_PROC_LAYOUT_IS_UCI(proc)) {
// MR_comp_type_arity is the arity of the type constructor.
// Each argument of the type constructor adds a typeinfo
// argument to the headvars for all predicates, unify, compare
// and index. (The index predicate doesn't need these typeinfos,
// but it has them anyway.)
*num_added_args_ptr = proc->MR_sle_uci.MR_uci_type_arity;
*arity_ptr = proc->MR_sle_num_head_vars - *num_added_args_ptr;
*pred_or_func_ptr = MR_PREDICATE;
} else {
*arity_ptr = proc->MR_sle_user.MR_user_pred_form_arity;
*num_added_args_ptr = proc->MR_sle_num_head_vars - *arity_ptr;
*pred_or_func_ptr = proc->MR_sle_user.MR_user_pred_or_func;
}
}
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