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Diffstat (limited to 'REORG.TODO/elf/vismain.c')
| -rw-r--r-- | REORG.TODO/elf/vismain.c | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/REORG.TODO/elf/vismain.c b/REORG.TODO/elf/vismain.c new file mode 100644 index 0000000000..43f1d8f095 --- /dev/null +++ b/REORG.TODO/elf/vismain.c @@ -0,0 +1,260 @@ +/* Copyright (C) 2000-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* This file must be compiled as PIE to avoid copy relocation when + accessing protected symbols defined in shared libaries since copy + relocation doesn't work with protected symbols and linker in + binutils 2.26 enforces this rule. */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "vismod.h" + +/* Prototype for our test function. */ +extern int do_test (void); + + +/* This defines the `main' function and some more. */ +#include <support/test-driver.c> + + +/* Prototypes for local functions. */ +extern int protlocal (void); + +const char *protvarlocal = __FILE__; +extern const char *protvarinmod; +extern const char *protvaritcpt; + +int +do_test (void) +{ + int res = 0; + int val; + + /* First test: check whether .protected is handled correctly by the + assembler/linker. The uses of `protlocal' in the DSOs and in the + main program should all be resolved with the local definitions. */ + val = protlocal () + calllocal1 () + calllocal2 (); + if (val != 0x155) + { + puts ("\ +The handling of `.protected' seems to be implemented incorrectly: giving up"); + abort (); + } + puts ("`.protected' seems to be handled correctly, good!"); + + /* Function pointers: for functions which are marked local and for + which definitions are available all function pointers must be + distinct. */ + if (protlocal == getlocal1 ()) + { + puts ("`protlocal' in main and mod1 have same address"); + res = 1; + } + if (protlocal == getlocal2 ()) + { + puts ("`protlocal' in main and mod2 have same address"); + res = 1; + } + if (getlocal1 () == getlocal2 ()) + { + puts ("`protlocal' in mod1 and mod2 have same address"); + res = 1; + } + if (getlocal1 () () + getlocal2 () () != 0x44) + { + puts ("pointers to `protlocal' in mod1 or mod2 incorrect"); + res = 1; + } + + /* Next test. This is similar to the last one but the function we + are calling is not defined in the main object. This means that + the invocation in the main object uses the definition in the + first DSO. */ + if (protinmod != getinmod1 ()) + { + printf ("&protinmod in main (%p) != &protinmod in mod1 (%p)\n", + protinmod, getinmod1 ()); + res = 1; + } + if (protinmod == getinmod2 ()) + { + puts ("`protinmod' in main and mod2 have same address"); + res = 1; + } + if (getinmod1 () == getinmod2 ()) + { + puts ("`protinmod' in mod1 and mod2 have same address"); + res = 1; + } + if (protinmod () + getinmod1 () () + getinmod2 () () != 0x4800) + { + puts ("pointers to `protinmod' in mod1 or mod2 incorrect"); + res = 1; + } + val = protinmod () + callinmod1 () + callinmod2 (); + if (val != 0x15800) + { + printf ("calling of `protinmod' leads to wrong result (%#x)\n", val); + res = 1; + } + + /* A very similar text. Same setup for the main object and the modules + but this time we have another definition in a preloaded module. This + one intercepts the references from the main object. */ + if (protitcpt != getitcpt3 ()) + { + printf ("&protitcpt in main (%p) != &protitcpt in mod3 (%p)\n", + &protitcpt, getitcpt3 ()); + res = 1; + } + if (protitcpt == getitcpt1 ()) + { + puts ("`protitcpt' in main and mod1 have same address"); + res = 1; + } + if (protitcpt == getitcpt2 ()) + { + puts ("`protitcpt' in main and mod2 have same address"); + res = 1; + } + if (getitcpt1 () == getitcpt2 ()) + { + puts ("`protitcpt' in mod1 and mod2 have same address"); + res = 1; + } + val = protitcpt () + getitcpt1 () () + getitcpt2 () () + getitcpt3 () (); + if (val != 0x8440000) + { + printf ("\ +pointers to `protitcpt' in mod1 or mod2 or mod3 incorrect (%#x)\n", val); + res = 1; + } + val = protitcpt () + callitcpt1 () + callitcpt2 () + callitcpt3 (); + if (val != 0x19540000) + { + printf ("calling of `protitcpt' leads to wrong result (%#x)\n", val); + res = 1; + } + + /* Now look at variables. First a variable which is available + everywhere. We must have three different addresses. */ + if (&protvarlocal == getvarlocal1 ()) + { + puts ("`protvarlocal' in main and mod1 have same address"); + res = 1; + } + if (&protvarlocal == getvarlocal2 ()) + { + puts ("`protvarlocal' in main and mod2 have same address"); + res = 1; + } + if (getvarlocal1 () == getvarlocal2 ()) + { + puts ("`protvarlocal' in mod1 and mod2 have same address"); + res = 1; + } + if (strcmp (protvarlocal, __FILE__) != 0) + { + puts ("`protvarlocal in main has wrong value"); + res = 1; + } + if (strcmp (*getvarlocal1 (), "vismod1.c") != 0) + { + puts ("`getvarlocal1' returns wrong value"); + res = 1; + } + if (strcmp (*getvarlocal2 (), "vismod2.c") != 0) + { + puts ("`getvarlocal2' returns wrong value"); + res = 1; + } + + /* Now the case where there is no local definition. */ + if (&protvarinmod != getvarinmod1 ()) + { + printf ("&protvarinmod in main (%p) != &protitcpt in mod1 (%p)\n", + &protvarinmod, getvarinmod1 ()); + // XXX Possibly enable once fixed. + // res = 1; + } + if (&protvarinmod == getvarinmod2 ()) + { + puts ("`protvarinmod' in main and mod2 have same address"); + res = 1; + } + if (strcmp (*getvarinmod1 (), "vismod1.c") != 0) + { + puts ("`getvarinmod1' returns wrong value"); + res = 1; + } + if (strcmp (*getvarinmod2 (), "vismod2.c") != 0) + { + puts ("`getvarinmod2' returns wrong value"); + res = 1; + } + + /* And a test where a variable definition is intercepted. */ + if (&protvaritcpt == getvaritcpt1 ()) + { + puts ("`protvaritcpt' in main and mod1 have same address"); + res = 1; + } + if (&protvaritcpt == getvaritcpt2 ()) + { + puts ("`protvaritcpt' in main and mod2 have same address"); + res = 1; + } + if (&protvaritcpt != getvaritcpt3 ()) + { + printf ("&protvaritcpt in main (%p) != &protvaritcpt in mod3 (%p)\n", + &protvaritcpt, getvaritcpt3 ()); + // XXX Possibly enable once fixed. + // res = 1; + } + if (getvaritcpt1 () == getvaritcpt2 ()) + { + puts ("`protvaritcpt' in mod1 and mod2 have same address"); + res = 1; + } + if (strcmp (protvaritcpt, "vismod3.c") != 0) + { + puts ("`protvaritcpt in main has wrong value"); + res = 1; + } + if (strcmp (*getvaritcpt1 (), "vismod1.c") != 0) + { + puts ("`getvaritcpt1' returns wrong value"); + res = 1; + } + if (strcmp (*getvaritcpt2 (), "vismod2.c") != 0) + { + puts ("`getvaritcpt2' returns wrong value"); + res = 1; + } + + return res; +} + + +int +protlocal (void) +{ + return 0x1; +} |