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3020f72618
Instead of using a special ELF section along with a linker script directive to put the IO vtables within the RELRO section, the libio vtables are all moved to an array marked as data.relro (so linker will place in the RELRO segment without the need of extra directives). To avoid static linking namespace issues and including all vtable referenced objects, all required function pointers are set to weak alias. Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
294 lines
12 KiB
Makefile
294 lines
12 KiB
Makefile
# Copyright (C) 1995-2023 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <https://www.gnu.org/licenses/>.
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#
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# Specific makefile for libio.
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#
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subdir := libio
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include ../Makeconfig
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headers := stdio.h \
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bits/stdio.h bits/stdio2.h bits/stdio2-decl.h bits/stdio-ldbl.h \
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bits/types/FILE.h bits/types/__FILE.h bits/types/struct_FILE.h \
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bits/types/__fpos_t.h bits/types/__fpos64_t.h \
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bits/types/cookie_io_functions_t.h
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routines := \
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filedoalloc iofclose iofdopen iofflush iofgetpos iofgets iofopen \
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iofopncook iofputs iofread iofsetpos ioftell wfiledoalloc \
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iofwrite iogetdelim iogetline iogets iopadn iopopen ioputs \
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ioseekoff ioseekpos iosetbuffer iosetvbuf ioungetc \
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iovsprintf iovsscanf \
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iofgetpos64 iofopen64 iofsetpos64 \
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fputwc fputwc_u getwc getwc_u getwchar getwchar_u iofgetws iofgetws_u \
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iofputws iofputws_u iogetwline iowpadn ioungetwc putwc putwc_u \
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putwchar putwchar_u putchar putchar_u fwprintf swprintf vwprintf \
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wprintf wscanf fwscanf vwscanf vswprintf iovswscanf swscanf wgenops \
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wstrops wfileops iofwide fwide wmemstream \
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\
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clearerr feof ferror fileno fputc freopen fseek getc getchar \
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memstream pclose putc putchar rewind setbuf setlinebuf vasprintf \
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iovdprintf vscanf vsnprintf obprintf fcloseall fseeko ftello \
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freopen64 fseeko64 ftello64 \
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\
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__fbufsize __freading __fwriting __freadable __fwritable __flbf \
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__fpurge __fpending __fsetlocking \
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\
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libc_fatal fmemopen oldfmemopen vtables
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gen-as-const-headers += libio-macros.sym
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tests = tst_swprintf tst_wprintf tst_swscanf tst_wscanf tst_getwc tst_putwc \
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tst_wprintf2 tst-widetext test-fmemopen tst-ext tst-ext2 \
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tst-fgetws tst-ungetwc1 tst-ungetwc2 tst-swscanf tst-sscanf \
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tst-mmap-setvbuf bug-ungetwc1 bug-ungetwc2 tst-atime tst-eof \
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tst-freopen bug-rewind bug-rewind2 bug-ungetc bug-fseek \
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tst-mmap-eofsync tst-mmap-fflushsync bug-mmap-fflush \
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tst-mmap2-eofsync tst-mmap-offend bug-fopena+ bug-wfflush \
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bug-ungetc2 bug-ftell bug-ungetc3 bug-ungetc4 tst-fopenloc2 \
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tst-memstream1 tst-memstream2 tst-memstream3 tst-memstream4 \
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tst-wmemstream1 tst-wmemstream2 tst-wmemstream3 tst-wmemstream4 \
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tst-wmemstream5 bug-memstream1 bug-wmemstream1 \
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tst-setvbuf1 tst-popen1 tst-fgetwc bug-wsetpos tst-fseek \
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tst-fwrite-error tst-ftell-partial-wide tst-ftell-active-handler \
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tst-ftell-append tst-fputws tst-bz22415 tst-fgetc-after-eof \
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tst-sprintf-ub tst-sprintf-chk-ub tst-bz24051 tst-bz24153 \
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tst-wfile-sync tst-bz28828 tst-getdelim
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tests-internal = tst-vtables tst-vtables-interposed
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ifeq (yes,$(build-shared))
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# Add test-fopenloc only if shared library is enabled since it depends on
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# shared localedata objects.
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tests += tst-fopenloc
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# Add tst-bz24228 only if shared library is enabled since it can never meet its
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# objective with static linking because the relevant code just is not there.
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tests += tst-bz24228
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endif
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test-srcs = test-freopen
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ifeq ($(build-shared),yes)
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routines += oldiofopen oldiofdopen oldiofclose oldiopopen oldpclose \
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oldtmpfile oldiofgetpos oldiofgetpos64 oldiofsetpos \
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oldiofsetpos64
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endif
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ifeq (yes,$(libc-reentrant))
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routines += clearerr_u feof_u ferror_u fputc_u getc_u getchar_u \
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iofflush_u putc_u putchar_u peekc iofread_u iofwrite_u iofgets_u \
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iofputs_u
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endif
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CPPFLAGS += $(libio-mtsafe)
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# Support for exception handling.
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CFLAGS-fileops.c += -fexceptions
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CFLAGS-fputc.c += -fexceptions
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CFLAGS-fputwc.c += -fexceptions
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CFLAGS-freopen64.c += -fexceptions
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CFLAGS-freopen.c += -fexceptions
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CFLAGS-fseek.c += -fexceptions
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CFLAGS-fseeko64.c += -fexceptions
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CFLAGS-fseeko.c += -fexceptions
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CFLAGS-ftello64.c += -fexceptions
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CFLAGS-ftello.c += -fexceptions
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CFLAGS-fwide.c += -fexceptions
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CFLAGS-genops.c += -fexceptions
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CFLAGS-getc.c += -fexceptions
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CFLAGS-getchar.c += -fexceptions
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CFLAGS-getwc.c += -fexceptions
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CFLAGS-getwchar.c += -fexceptions
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CFLAGS-iofclose.c += -fexceptions
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CFLAGS-iofflush.c += -fexceptions $(config-cflags-wno-ignored-attributes)
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CFLAGS-iofgetpos64.c += -fexceptions
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CFLAGS-iofgetpos.c += -fexceptions
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CFLAGS-iofgets.c += -fexceptions
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CFLAGS-iofgetws.c += -fexceptions
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CFLAGS-iofputs.c += -fexceptions $(config-cflags-wno-ignored-attributes)
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CFLAGS-iofputws.c += -fexceptions
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CFLAGS-iofread.c += -fexceptions
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CFLAGS-iofsetpos64.c += -fexceptions
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CFLAGS-iofsetpos.c += -fexceptions
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CFLAGS-ioftell.c += -fexceptions
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CFLAGS-iofwrite.c += -fexceptions $(config-cflags-wno-ignored-attributes)
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CFLAGS-iogetdelim.c += -fexceptions
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CFLAGS-iogetline.c += -fexceptions
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CFLAGS-iogets.c += -fexceptions
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CFLAGS-iogetwline.c += -fexceptions
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CFLAGS-ioputs.c += -fexceptions
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CFLAGS-ioseekoff.c += -fexceptions
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CFLAGS-ioseekpos.c += -fexceptions
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CFLAGS-iosetbuffer.c += -fexceptions
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CFLAGS-iosetvbuf.c += -fexceptions
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CFLAGS-ioungetc.c += -fexceptions
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CFLAGS-ioungetwc.c += -fexceptions
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CFLAGS-oldfileops.c += -fexceptions
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CFLAGS-oldiofclose.c += -fexceptions
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CFLAGS-oldiofgetpos64.c += -fexceptions
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CFLAGS-oldiofgetpos.c += -fexceptions
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CFLAGS-oldiofsetpos64.c += -fexceptions
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CFLAGS-oldiofsetpos.c += -fexceptions
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CFLAGS-peekc.c += -fexceptions
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CFLAGS-putc.c += -fexceptions
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CFLAGS-putchar.c += -fexceptions
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CFLAGS-putwc.c += -fexceptions
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CFLAGS-putwchar.c += -fexceptions
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CFLAGS-rewind.c += -fexceptions
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CFLAGS-wfileops.c += -fexceptions
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CFLAGS-wgenops.c += -fexceptions
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CFLAGS-oldiofopen.c += -fexceptions
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CFLAGS-iofopen.c += -fexceptions
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CFLAGS-iofopen64.c += -fexceptions
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CFLAGS-oldtmpfile.c += -fexceptions
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CFLAGS-fileno.c += $(config-cflags-wno-ignored-attributes)
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CFLAGS-feof_u.c += $(config-cflags-wno-ignored-attributes)
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CFLAGS-ferror_u.c += $(config-cflags-wno-ignored-attributes)
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CFLAGS-getc_u.c += $(config-cflags-wno-ignored-attributes)
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CFLAGS-iofflush_u.c += $(config-cflags-wno-ignored-attributes)
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CFLAGS-putc_u.c += $(config-cflags-wno-ignored-attributes)
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CFLAGS-iofgets_u.c += $(config-cflags-wno-ignored-attributes)
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CFLAGS-iofputs_u.c += $(config-cflags-wno-ignored-attributes)
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# XXX Do we need filedoalloc and wfiledoalloc? Others?
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CFLAGS-tst_putwc.c += -DOBJPFX=\"$(objpfx)\"
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# These test cases intentionally use overlapping arguments
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CFLAGS-tst-sprintf-ub.c += -Wno-restrict
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CFLAGS-tst-sprintf-chk-ub.c += -Wno-restrict
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LDFLAGS-tst-bz24228 = -Wl,--version-script=tst-bz24228.map
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tst_wprintf2-ARGS = "Some Text"
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test-fmemopen-ENV = MALLOC_TRACE=$(objpfx)test-fmemopen.mtrace \
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LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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tst-fopenloc-ENV = MALLOC_TRACE=$(objpfx)tst-fopenloc.mtrace \
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LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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tst-bz22415-ENV = MALLOC_TRACE=$(objpfx)tst-bz22415.mtrace \
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LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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tst-bz24228-ENV = MALLOC_TRACE=$(objpfx)tst-bz24228.mtrace \
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LD_PRELOAD=$(common-objpfx)/malloc/libc_malloc_debug.so
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generated += test-fmemopen.mtrace test-fmemopen.check
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generated += tst-fopenloc.mtrace tst-fopenloc.check
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generated += tst-bz22415.mtrace tst-bz22415.check
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aux := fileops genops stdfiles stdio strops
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ifeq ($(build-shared),yes)
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generated += tst-bz24228.mtrace tst-bz24228.check
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aux += oldfileops oldstdfiles
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endif
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shared-only-routines = oldiofopen oldiofdopen oldiofclose oldfileops \
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oldstdfiles oldiopopen oldpclose oldtmpfile \
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oldiofgetpos oldiofgetpos64 oldiofsetpos \
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oldiofsetpos64
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ifeq ($(run-built-tests),yes)
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tests-special += $(objpfx)test-freopen.out $(objpfx)test-fmemopen-mem.out \
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$(objpfx)tst-bz22415-mem.out
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ifeq (yes,$(build-shared))
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# Run tst-fopenloc-cmp.out and tst-openloc-mem.out only if shared
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# library is enabled since they depend on tst-fopenloc.out.
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tests-special += $(objpfx)tst-fopenloc-cmp.out $(objpfx)tst-fopenloc-mem.out \
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$(objpfx)tst-bz24228-mem.out
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endif
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tests += tst-cleanup-default tst-cleanup-default-static
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tests-static += tst-cleanup-default-static
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tests-special += $(objpfx)tst-cleanup-default-cmp.out $(objpfx)tst-cleanup-default-static-cmp.out
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LDFLAGS-tst-cleanup-default = -Wl,--gc-sections
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LDFLAGS-tst-cleanup-default-static = -Wl,--gc-sections
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ifeq ($(have-gnu-retain)$(have-z-start-stop-gc),yesyes)
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tests += tst-cleanup-start-stop-gc tst-cleanup-start-stop-gc-static \
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tst-cleanup-nostart-stop-gc tst-cleanup-nostart-stop-gc-static
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tests-static += tst-cleanup-start-stop-gc-static tst-cleanup-nostart-stop-gc-static
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tests-special += $(objpfx)tst-cleanup-start-stop-gc-cmp.out \
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$(objpfx)tst-cleanup-start-stop-gc-static-cmp.out \
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$(objpfx)tst-cleanup-nostart-stop-gc-cmp.out \
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$(objpfx)tst-cleanup-nostart-stop-gc-static-cmp.out
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LDFLAGS-tst-cleanup-start-stop-gc := -Wl,--gc-sections,-z,start-stop-gc
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LDFLAGS-tst-cleanup-start-stop-gc-static := -Wl,--gc-sections,-z,start-stop-gc
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LDFLAGS-tst-cleanup-nostart-stop-gc := -Wl,--gc-sections,-z,nostart-stop-gc
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LDFLAGS-tst-cleanup-nostart-stop-gc-static := -Wl,--gc-sections,-z,nostart-stop-gc
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endif
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endif
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include ../Rules
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ifeq ($(run-built-tests),yes)
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LOCALES := de_DE.ISO-8859-1 de_DE.UTF-8 en_US.ISO-8859-1 en_US.UTF-8 \
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ja_JP.EUC-JP ja_JP.UTF-8
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include ../gen-locales.mk
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$(objpfx)bug-ftell.out: $(gen-locales)
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$(objpfx)bug-ungetwc1.out: $(gen-locales)
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$(objpfx)bug-ungetwc2.out: $(gen-locales)
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$(objpfx)tst-fgetwc.out: $(gen-locales)
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$(objpfx)tst-fgetws.out: $(gen-locales)
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$(objpfx)tst-fopenloc.out: $(gen-locales)
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$(objpfx)tst-fputws.out: $(gen-locales)
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$(objpfx)tst-fseek.out: $(gen-locales)
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$(objpfx)tst-ftell-active-handler.out: $(gen-locales)
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$(objpfx)tst-ftell-append.out: $(gen-locales)
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$(objpfx)tst-ftell-partial-wide.out: $(gen-locales)
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$(objpfx)tst-setvbuf1.out: $(gen-locales)
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$(objpfx)tst-swscanf.out: $(gen-locales)
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$(objpfx)tst-ungetwc1.out: $(gen-locales)
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$(objpfx)tst-ungetwc2.out: $(gen-locales)
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$(objpfx)tst-widetext.out: $(gen-locales)
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$(objpfx)tst_wprintf2.out: $(gen-locales)
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$(objpfx)tst-wfile-sync.out: $(gen-locales)
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endif
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define gen-tst-cleanup
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$(objpfx)tst-cleanup-$1-cmp.out: tst-cleanup.exp $(objpfx)tst-cleanup-$1.out
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cmp $$^ > $$@; $$(evaluate-test)
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endef
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$(foreach t,default default-static start-stop-gc start-stop-gc-static nostart-stop-gc nostart-stop-gc-static, \
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$(eval $(call gen-tst-cleanup,$(t))))
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$(objpfx)test-freopen.out: test-freopen.sh $(objpfx)test-freopen
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$(SHELL) $< $(common-objpfx) '$(test-program-prefix)' \
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$(common-objpfx)libio/; \
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$(evaluate-test)
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$(objpfx)tst-fopenloc-cmp.out: ../iconvdata/testdata/ISO-8859-1..UTF8 \
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$(objpfx)tst-fopenloc.out
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cmp $^ > $@; \
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$(evaluate-test)
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$(objpfx)test-fmemopen-mem.out: $(objpfx)test-fmemopen.out
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$(common-objpfx)malloc/mtrace $(objpfx)test-fmemopen.mtrace > $@; \
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$(evaluate-test)
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$(objpfx)tst-fopenloc-mem.out: $(objpfx)tst-fopenloc.out
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$(common-objpfx)malloc/mtrace $(objpfx)tst-fopenloc.mtrace > $@; \
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$(evaluate-test)
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$(objpfx)tst-bz22415-mem.out: $(objpfx)tst-bz22415.out
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$(common-objpfx)malloc/mtrace $(objpfx)tst-bz22415.mtrace > $@; \
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$(evaluate-test)
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$(objpfx)tst-bz24228-mem.out: $(objpfx)tst-bz24228.out
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$(common-objpfx)malloc/mtrace $(objpfx)tst-bz24228.mtrace > $@; \
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$(evaluate-test)
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