gdb/testsuite/gdb.base/infcall-nested-structs.c

/* This testcase is part of GDB, the GNU debugger.

   Copyright 2018-2020 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

/* This file is used for testing GDBs ability to pass structures to, and
   return structures from, functions.  All of the structures in this test
   are special in that they are small structures containing from 1 up to 5
   scalar fields, the fields can be inside nested structures, and there can
   be empty structures around too.

   When compiled for C++ this file also tests structures containing static
   members (which live in global memory).  In addition, empty structures in C++
   have a size of 1 (compared to 0 in GNU C), which can effect structure
   padding.

   This test is specifically written for RiscV and Aarch64, which both have
   special ABI rules for structures like these, however, there should be no harm
   in running these tests on other targets, though in many cases the
   structures will treated no differently to the structures already covered
   in the structs.exp test script.  */

#include <string.h>

/* Useful abreviations.  */
typedef char tc;
typedef short ts;
typedef int ti;
typedef long tl;
typedef long long tll;
typedef float tf;
typedef double td;
typedef long double tld;

#ifdef TEST_COMPLEX
typedef float _Complex tfc;
typedef double _Complex tdc;
typedef long double _Complex tldc;
#endif /* TEST_COMPLEX */

#define MAKE_CHECK_FUNCS(TYPE)					\
  int __attribute__((noinline,noclone))				\
  check_arg_ ## TYPE (struct TYPE arg)				\
  {								\
    return cmp_ ## TYPE (arg, ref_val_ ## TYPE);		\
  }								\
								\
  struct TYPE __attribute__((noinline,noclone))			\
  rtn_str_ ## TYPE (void)					\
  {								\
    return (ref_val_ ## TYPE);					\
  }

#define REF_VAL(NAME) struct NAME ref_val_ ## NAME
#define ES(NAME) struct { } NAME

/* Test is either for a single type or two differing types.  */
#if defined tA && ! defined tB
#define tB tA
#endif
#if ! defined tB
#error "Incorrect configuration of tA and tB defines"
#endif

/* Structures with a single field nested to various depths, along with
   some empty structures.  */
struct struct_01_01 { ES(es1); struct { struct { tA a; } s1; } s2; };
struct struct_01_02 { tA a; struct { struct { ES(es1); } s1; } s2; };
struct struct_01_03 { struct { struct { ES(es1); } s1; } s2; ES(es1); struct { struct { tA a; } s3; } s4;};
struct struct_01_04 { ES(es1); ES(es2); tA a; ES(es3); };

/* Structures with two fields nested to various depths, along with
   some empty structures.  */
struct struct_02_01 { ES(es1); struct { struct { tA a; tB b; } s1; } s2; };
struct struct_02_02 { tA a; struct { struct { ES(es1); } s1; } s2; tB b; };
struct struct_02_03 { struct { struct { ES(es1); } s1; } s2; ES(es1); struct { struct { tA a; } s3; } s4; struct { struct { tB b; } s5; } s6;};
struct struct_02_04 { ES(es1); ES(es2); tA a; ES(es3); tB b; };

/* Structures with four fields nested to various depths, along with
   some empty structures.  */
struct struct_04_01 { ES(es1); struct { struct { tA a; tB b; tA c; tB d; } s1; } s2; };
struct struct_04_02 { tA a; struct { struct { ES(es1); } s1; } s2; tB b; struct { struct { ES(es1); } s2; } s3; tA c; struct { struct { ES(es2); } s4; } s5; tB d;};
struct struct_04_03 { struct { struct { ES(es1); } s1; } s2; ES(es1); struct { struct { tA a; } s3; } s4; struct { struct { tB b; } s5; } s6; struct { struct { tA c; } s7; } s8; struct { struct { tB d; } s9; } s10;};
struct struct_04_04 { ES(es1); ES(es2); tA a; ES(es3); tB b; ES(es4); tA c; ES(es5); tB d; };

/* Structures with five fields nested to various depths, along with
   some empty structures.  */
struct struct_05_01 { ES(es1); struct { struct { tA a; tB b; tA c; tB d; tA e; } s1; } s2; };
struct struct_05_02 { tA a; struct { struct { ES(es1); } s1; } s2; tB b; struct { struct { ES(es1); } s2; } s3; tA c; struct { struct { ES(es2); } s4; } s5; tB d; struct { struct { ES(es2); } s6; } s7; tB e;};
struct struct_05_03 { struct { struct { ES(es1); } s1; } s2; ES(es1); struct { struct { tA a; } s3; } s4; struct { struct { tB b; } s5; } s6; struct { struct { tA c; } s7; } s8; struct { struct { tB d; } s9; } s10; struct { struct { tA e; } s11; } s12;};
struct struct_05_04 { ES(es1); ES(es2); tA a; ES(es3); tB b; ES(es4); tA c; ES(es5); tB d; ES(es6); tA e; };

/* Only C++ allows structures to have static members.  */
#ifdef __cplusplus

/* Structures with two fields nested to various depths, one of which is static.
   Some include empty structures.  */
struct struct_static_02_01 { struct sa { struct sb { tA a; static tB b; } s1; } s2; };
struct struct_static_02_02 { static tA a; struct { struct { ES(es1); } s1; } s2; tB b; };
struct struct_static_02_03 { struct { struct { ES(es1); } s1; } s2; ES(es1); struct { struct { tA a; } s3; } s4; struct sa { struct sb { static tB b; } s5; } s6;};
struct struct_static_02_04 { static tA a; tB b; };

/* Structures with four fields nested to various depths, some of which are
   static.  Some include empty structures.  */
struct struct_static_04_01 { struct sa { struct sb { static tA a; tB b; tA c; tB d; } s1; } s2; };
struct struct_static_04_02 { tA a; struct { struct { ES(es1); } s1; } s2; tB b; struct { struct { ES(es1); } s2; } s3; static tA c; struct { struct { ES(es2); } s4; } s5; static tB d;};
struct struct_static_04_03 { struct sa { struct sb { static tA a; } s3; } s4; struct sc { struct sd { static tB b; } s5; } s6; struct se { struct sf { static tA c; } s7; } s8; struct sg { struct sh { static tB d; } s9; } s10;};
struct struct_static_04_04 { ES(es1); ES(es2); tA a; ES(es3); tB b; ES(es4); tA c; ES(es5); static tB d; };

/* Structures with six fields nested to various depths, some of which are
   static.  Some include empty structures.  */
struct struct_static_06_01 { struct sa { struct sb { tA a; static tB b; tA c; tB d; tA e; } s1; } s2; tB f; };
struct struct_static_06_02 { tA a; static tB b; static tA c; tB d; tB e; tA f;};
struct struct_static_06_03 { struct { struct { ES(es1); } s1; } s2; ES(es1); struct sa { struct sb { static tA a; } s3; } s4; struct sc { struct sd { tB b; } s5; } s6; struct se { struct sf { static tA c; } s7; } s8; struct sg { struct sh { static tB d; } s9; } s10; struct { struct { tA e; tB f; } s11; } s12;};
struct struct_static_06_04 { ES(es1); ES(es2); static tA a; ES(es3); static tB b; ES(es4); static tA c; ES(es5); static tB d; ES(es6); static tA e; ES(es7); tB f; };

#endif

int __attribute__((noinline,noclone))
cmp_struct_01_01 (struct struct_01_01 a, struct struct_01_01 b)
{ return a.s2.s1.a == b.s2.s1.a; }

int __attribute__((noinline,noclone))
cmp_struct_01_02 (struct struct_01_02 a, struct struct_01_02 b)
{ return a.a == b.a; }

int __attribute__((noinline,noclone))
cmp_struct_01_03 (struct struct_01_03 a, struct struct_01_03 b)
{ return a.s4.s3.a == b.s4.s3.a; }

int __attribute__((noinline,noclone))
cmp_struct_01_04 (struct struct_01_04 a, struct struct_01_04 b)
{ return a.a == b.a; }

int __attribute__((noinline,noclone))
cmp_struct_02_01 (struct struct_02_01 a, struct struct_02_01 b)
{ return a.s2.s1.a == b.s2.s1.a && a.s2.s1.b == b.s2.s1.b; }

int __attribute__((noinline,noclone))
cmp_struct_02_02 (struct struct_02_02 a, struct struct_02_02 b)
{ return a.a == b.a && a.b == b.b; }

int __attribute__((noinline,noclone))
cmp_struct_02_03 (struct struct_02_03 a, struct struct_02_03 b)
{ return a.s4.s3.a == b.s4.s3.a && a.s6.s5.b == b.s6.s5.b; }

int __attribute__((noinline,noclone))
cmp_struct_02_04 (struct struct_02_04 a, struct struct_02_04 b)
{ return a.a == b.a && a.b == b.b; }

int __attribute__((noinline,noclone))
cmp_struct_04_01 (struct struct_04_01 a, struct struct_04_01 b)
{ return a.s2.s1.a == b.s2.s1.a && a.s2.s1.b == b.s2.s1.b
	 && a.s2.s1.c == b.s2.s1.c && a.s2.s1.d == b.s2.s1.d; }

int __attribute__((noinline,noclone))
cmp_struct_04_02 (struct struct_04_02 a, struct struct_04_02 b)
{ return a.a == b.a && a.b == b.b && a.c == b.c && a.d == b.d; }

int __attribute__((noinline,noclone))
cmp_struct_04_03 (struct struct_04_03 a, struct struct_04_03 b)
{ return a.s4.s3.a == b.s4.s3.a && a.s6.s5.b == b.s6.s5.b
	 && a.s8.s7.c == b.s8.s7.c && a.s10.s9.d == b.s10.s9.d; }

int __attribute__((noinline,noclone))
cmp_struct_04_04 (struct struct_04_04 a, struct struct_04_04 b)
{ return a.a == b.a && a.b == b.b && a.c == b.c && a.d == b.d; }

int __attribute__((noinline,noclone))
cmp_struct_05_01 (struct struct_05_01 a, struct struct_05_01 b)
{ return a.s2.s1.a == b.s2.s1.a && a.s2.s1.b == b.s2.s1.b
	 && a.s2.s1.c == b.s2.s1.c && a.s2.s1.d == b.s2.s1.d
	 && a.s2.s1.e == b.s2.s1.e; }

int __attribute__((noinline,noclone))
cmp_struct_05_02 (struct struct_05_02 a, struct struct_05_02 b)
{ return a.a == b.a && a.b == b.b && a.c == b.c && a.d == b.d && a.e == b.e; }

int __attribute__((noinline,noclone))
cmp_struct_05_03 (struct struct_05_03 a, struct struct_05_03 b)
{ return a.s4.s3.a == b.s4.s3.a && a.s6.s5.b == b.s6.s5.b
	 && a.s8.s7.c == b.s8.s7.c && a.s10.s9.d == b.s10.s9.d
	 && a.s12.s11.e == b.s12.s11.e; }

int __attribute__((noinline,noclone))
cmp_struct_05_04 (struct struct_05_04 a, struct struct_05_04 b)
{ return a.a == b.a && a.b == b.b && a.c == b.c && a.d == b.d && a.e == b.e; }

#ifdef __cplusplus

int __attribute__((noinline,noclone))
cmp_struct_static_02_01 (struct struct_static_02_01 a,
			 struct struct_static_02_01 b)
{ return a.s2.s1.a == b.s2.s1.a && a.s2.s1.b == b.s2.s1.b; }

int __attribute__((noinline,noclone))
cmp_struct_static_02_02 (struct struct_static_02_02 a,
			 struct struct_static_02_02 b)
{ return a.a == b.a && a.b == b.b; }

int __attribute__((noinline,noclone))
cmp_struct_static_02_03 (struct struct_static_02_03 a,
			 struct struct_static_02_03 b)
{ return a.s4.s3.a == b.s4.s3.a && a.s6.s5.b == b.s6.s5.b; }

int __attribute__((noinline,noclone))
cmp_struct_static_02_04 (struct struct_static_02_04 a,
			     struct struct_static_02_04 b)
{ return a.a == b.a && a.b == b.b; }

int __attribute__((noinline,noclone))
cmp_struct_static_04_01 (struct struct_static_04_01 a,
			 struct struct_static_04_01 b)
{ return a.s2.s1.a == b.s2.s1.a && a.s2.s1.b == b.s2.s1.b
	 && a.s2.s1.c == b.s2.s1.c && a.s2.s1.d == b.s2.s1.d; }

int __attribute__((noinline,noclone))
cmp_struct_static_04_02 (struct struct_static_04_02 a,
			 struct struct_static_04_02 b)
{ return a.a == b.a && a.b == b.b && a.c == b.c && a.d == b.d; }

int __attribute__((noinline,noclone))
cmp_struct_static_04_03 (struct struct_static_04_03 a,
			 struct struct_static_04_03 b)
{ return a.s4.s3.a == b.s4.s3.a && a.s6.s5.b == b.s6.s5.b
	 && a.s8.s7.c == b.s8.s7.c && a.s10.s9.d == b.s10.s9.d; }

int __attribute__((noinline,noclone))
cmp_struct_static_04_04 (struct struct_static_04_04 a,
			 struct struct_static_04_04 b)
{ return a.a == b.a && a.b == b.b && a.c == b.c && a.d == b.d; }

int __attribute__((noinline,noclone))
cmp_struct_static_06_01 (struct struct_static_06_01 a,
			 struct struct_static_06_01 b)
{ return a.s2.s1.a == b.s2.s1.a && a.s2.s1.b == b.s2.s1.b
	 && a.s2.s1.c == b.s2.s1.c && a.s2.s1.d == b.s2.s1.d
	 && a.s2.s1.e == b.s2.s1.e && a.f == b.f; }

int __attribute__((noinline,noclone))
cmp_struct_static_06_02 (struct struct_static_06_02 a,
			 struct struct_static_06_02 b)
{ return a.a == b.a && a.b == b.b && a.c == b.c && a.d == b.d && a.e == b.e
	 && a.f == b.f; }

int __attribute__((noinline,noclone))
cmp_struct_static_06_03 (struct struct_static_06_03 a,
			 struct struct_static_06_03 b)
{ return a.s4.s3.a == b.s4.s3.a && a.s6.s5.b == b.s6.s5.b
	 && a.s8.s7.c == b.s8.s7.c && a.s10.s9.d == b.s10.s9.d
	 && a.s12.s11.e == b.s12.s11.e && a.s12.s11.f == b.s12.s11.f; }

int __attribute__((noinline,noclone))
cmp_struct_static_06_04 (struct struct_static_06_04 a,
			 struct struct_static_06_04 b)
{ return a.a == b.a && a.b == b.b && a.c == b.c && a.d == b.d && a.e == b.e
	 && a.f == b.f; }

#endif

REF_VAL(struct_01_01) = { {}, { { 'a' } } };
REF_VAL(struct_01_02) = { 'a', { { {} } } };
REF_VAL(struct_01_03) = { { { {} } }, {}, { { 'a' } } };
REF_VAL(struct_01_04) = { {}, {}, 'a', {} };

REF_VAL(struct_02_01) = { {}, { { 'a', 'b' } } };
REF_VAL(struct_02_02) = { 'a', { { {} } }, 'b' };
REF_VAL(struct_02_03) = { { { {} } }, {}, { { 'a' } }, { { 'b' } } };
REF_VAL(struct_02_04) = { {}, {}, 'a', {}, 'b' };

REF_VAL(struct_04_01) = { {}, { { 'a', 'b', 'c', 'd' } } };
REF_VAL(struct_04_02) = { 'a', { { {} } }, 'b', { { {} } }, 'c', { { {} } }, 'd' };
REF_VAL(struct_04_03) = { { { {} } }, {}, { { 'a' } }, { { 'b' } }, { { 'c' } }, { { 'd' } } };
REF_VAL(struct_04_04) = { {}, {}, 'a', {}, 'b', {}, 'c', {}, 'd' };

REF_VAL(struct_05_01) = { {}, { { 'a', 'b', 'c', 'd', 'e' } } };
REF_VAL(struct_05_02) = { 'a', { { {} } }, 'b', { { {} } }, 'c', { { {} } }, 'd', { { {} } }, 'e' };
REF_VAL(struct_05_03) = { { { {} } }, {}, { { 'a' } }, { { 'b' } }, { { 'c' } }, { { 'd' } }, { { 'e' } } };
REF_VAL(struct_05_04) = { {}, {}, 'a', {}, 'b', {}, 'c', {}, 'd', {}, 'e' };

#ifdef __cplusplus

/* Initialise static members.  */
tB struct_static_02_01::sa::sb::b = '1';
tA struct_static_02_02::a = '2';
tB struct_static_02_03::sa::sb::b = '3';
tA struct_static_02_04::a = '4';
tA struct_static_04_01::sa::sb::a = '5';
tA struct_static_04_02::c = '6';
tB struct_static_04_02::d = '7';
tA struct_static_04_03::sa::sb::a = '8';
tB struct_static_04_03::sc::sd::b = '9';
tA struct_static_04_03::se::sf::c = '0';
tB struct_static_04_03::sg::sh::d = 'A';
tB struct_static_04_04::d = 'B';
tB struct_static_06_01::sa::sb::b = 'C';
tB struct_static_06_02::b = 'D';
tA struct_static_06_02::c = 'E';
tA struct_static_06_03::sa::sb::a = 'F';
tA struct_static_06_03::se::sf::c = 'G';
tB struct_static_06_03::sg::sh::d = 'H';
tA struct_static_06_04::a = 'I';
tB struct_static_06_04::b = 'J';
tA struct_static_06_04::c = 'K';
tB struct_static_06_04::d = 'L';
tA struct_static_06_04::e = 'M';

REF_VAL(struct_static_02_01) = { { { 'a' } } };
REF_VAL(struct_static_02_02) = { { { {} } }, 'b' };
REF_VAL(struct_static_02_03) = { { { {} } }, {}, { { 'a' } }, { { } } };
REF_VAL(struct_static_02_04) = { 'b' };
REF_VAL(struct_static_04_01) = { { { 'b', 'c', 'd' } } };
REF_VAL(struct_static_04_02) = { 'a', { { {} } }, 'b', { { {} } }, { { {} } } };
REF_VAL(struct_static_04_03) = {};
REF_VAL(struct_static_04_04) = { {}, {}, 'a', {}, 'b', {}, 'c', {} };
REF_VAL(struct_static_06_01) = { { { 'a', 'c', 'd', 'e' } }, 'f' };
REF_VAL(struct_static_06_02) = { 'a', 'd', 'e', 'f' };
REF_VAL(struct_static_06_03) = { { { {} } }, {}, {}, { { 'b' } }, {}, /*{ { 'e', 'f' } }*/ };
REF_VAL(struct_static_06_04) = { {}, {}, {}, {}, {}, {}, {}, 'f' };

#endif

/* Create all of the functions GDB will call to check functionality.  */
MAKE_CHECK_FUNCS(struct_01_01)
MAKE_CHECK_FUNCS(struct_01_02)
MAKE_CHECK_FUNCS(struct_01_03)
MAKE_CHECK_FUNCS(struct_01_04)
MAKE_CHECK_FUNCS(struct_02_01)
MAKE_CHECK_FUNCS(struct_02_02)
MAKE_CHECK_FUNCS(struct_02_03)
MAKE_CHECK_FUNCS(struct_02_04)
MAKE_CHECK_FUNCS(struct_04_01)
MAKE_CHECK_FUNCS(struct_04_02)
MAKE_CHECK_FUNCS(struct_04_03)
MAKE_CHECK_FUNCS(struct_04_04)
MAKE_CHECK_FUNCS(struct_05_01)
MAKE_CHECK_FUNCS(struct_05_02)
MAKE_CHECK_FUNCS(struct_05_03)
MAKE_CHECK_FUNCS(struct_05_04)
#ifdef __cplusplus
MAKE_CHECK_FUNCS(struct_static_02_01)
MAKE_CHECK_FUNCS(struct_static_02_02)
MAKE_CHECK_FUNCS(struct_static_02_03)
MAKE_CHECK_FUNCS(struct_static_02_04)
MAKE_CHECK_FUNCS(struct_static_04_01)
MAKE_CHECK_FUNCS(struct_static_04_02)
MAKE_CHECK_FUNCS(struct_static_04_03)
MAKE_CHECK_FUNCS(struct_static_04_04)
MAKE_CHECK_FUNCS(struct_static_06_01)
MAKE_CHECK_FUNCS(struct_static_06_02)
MAKE_CHECK_FUNCS(struct_static_06_03)
MAKE_CHECK_FUNCS(struct_static_06_04)
#endif

#define CALL_LINE(NAME) val += check_arg_ ## NAME (rtn_str_ ## NAME ())

int __attribute__((noinline,noclone))
call_all ()
{
  int val = 0;

  CALL_LINE(struct_01_01);
  CALL_LINE(struct_01_02);
  CALL_LINE(struct_01_03);
  CALL_LINE(struct_01_04);
  CALL_LINE(struct_02_01);
  CALL_LINE(struct_02_02);
  CALL_LINE(struct_02_03);
  CALL_LINE(struct_02_04);
  CALL_LINE(struct_04_01);
  CALL_LINE(struct_04_02);
  CALL_LINE(struct_04_03);
  CALL_LINE(struct_04_04);
  CALL_LINE(struct_05_01);
  CALL_LINE(struct_05_02);
  CALL_LINE(struct_05_03);
  CALL_LINE(struct_05_04);
#ifdef __cplusplus
  CALL_LINE(struct_static_02_01);
  CALL_LINE(struct_static_02_02);
  CALL_LINE(struct_static_02_03);
  CALL_LINE(struct_static_02_04);
  CALL_LINE(struct_static_04_01);
  CALL_LINE(struct_static_04_02);
  CALL_LINE(struct_static_04_03);
  CALL_LINE(struct_static_04_04);
  CALL_LINE(struct_static_06_01);
  CALL_LINE(struct_static_06_02);
  CALL_LINE(struct_static_06_03);
  CALL_LINE(struct_static_06_04);
#endif

  return val;
}

int volatile v = 1;

void __attribute__((noinline, noclone))
breakpt (void)
{
  v++;
}

int
main ()
{
  int res;

  res = call_all ();
  breakpt (); /* Break Here.  */
  return res;
}