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libsframe: add the SFrame library
libsframe is a library that allows you to: - decode a .sframe section - probe and inspect a .sframe section - encode (and eventually write) a .sframe section. This library is currently being used by the linker, readelf, objdump. This library will also be used by the SFrame unwinder which is still to be upstream'd. The file include/sframe-api.h defines the user-facing APIs for decoding, encoding and probing .sframe sections. A set of error codes together with their error message strings are also defined. Endian flipping is performed automatically at read and write time, if cross-endianness is detected. ChangeLog: * Makefile.def: Add libsframe as new module with its dependencies. * Makefile.in: Regenerated. * binutils/Makefile.am: Add libsframe. * binutils/Makefile.in: Regenerated. * configure: Regenerated * configure.ac: Add libsframe to host_libs. * libsframe/Makefile.am: New file. * libsframe/Makefile.in: New file. * libsframe/aclocal.m4: New file. * libsframe/config.h.in: New file. * libsframe/configure: New file. * libsframe/configure.ac: New file. * libsframe/sframe-error.c: New file. * libsframe/sframe-impl.h: New file. * libsframe/sframe.c: New file. include/ChangeLog: * sframe-api.h: New file. testsuite/ChangeLog: * libsframe/testsuite/Makefile.am: New file. * libsframe/testsuite/Makefile.in: Regenerated. * libsframe/testsuite/libsframe.decode/Makefile.am: New file. * libsframe/testsuite/libsframe.decode/Makefile.in: Regenerated. * libsframe/testsuite/libsframe.decode/decode.exp: New file. * libsframe/testsuite/libsframe.encode/Makefile.am: Likewise. * libsframe/testsuite/libsframe.encode/Makefile.in: Regenerated. * libsframe/testsuite/libsframe.encode/encode.exp: New file. * libsframe/testsuite/libsframe.encode/encode-1.c: Likewise. * libsframe/testsuite/libsframe.decode/be-flipping.c: Likewise. * libsframe/testsuite/libsframe.decode/frecnt-1.c: Likewise. * libsframe/testsuite/libsframe.decode/frecnt-2.c: Likewise. * libsframe/testsuite/libsframe.decode/DATA-BE: New file. * libsframe/testsuite/libsframe.decode/DATA1: Likewise. * libsframe/testsuite/libsframe.decode/DATA2: Likewise.
This commit is contained in:
Weimin Pan
177
libsframe/testsuite/libsframe.encode/encode-1.c
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177
libsframe/testsuite/libsframe.encode/encode-1.c
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/* encode-1.c -- Test for encoder in libsframe.
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Copyright (C) 2022 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include "sframe-api.h"
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/* DejaGnu should not use gnulib's vsnprintf replacement here. */
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#undef vsnprintf
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#include <dejagnu.h>
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static int
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add_fde1 (sframe_encoder_ctx *encode, int idx)
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{
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int i, err;
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/* A contiguous block containing 4 FREs. */
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sframe_frame_row_entry fres[]
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= { {0x0, 0x3, {0x8, 0, 0}},
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{0x1, 0x5, {0x10, 0xf0, 0}},
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{0x4, 0x4, {0x10, 0xf0, 0}},
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{0x1a, 0x5, {0x8, 0xf0, 0}}
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};
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unsigned char finfo = sframe_fde_func_info (SFRAME_FRE_TYPE_ADDR1,
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SFRAME_FDE_TYPE_PCINC);
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err = sframe_encoder_add_funcdesc (encode, 0xfffff03e, 0x1b, finfo, 4);
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if (err == -1)
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return err;
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for (i = 0; i < 4; i++)
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if (sframe_encoder_add_fre (encode, idx,fres+i) == SFRAME_ERR)
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return -1;
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return 0;
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}
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static int
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add_fde2 (sframe_encoder_ctx *encode, int idx)
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{
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int i, err;
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/* A contiguous block containing 4 FREs. */
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sframe_frame_row_entry fres[]
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= { {0x0, 0x3, {0x8, 0, 0}},
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{0x1, 0x5, {0x10, 0xf0, 0}},
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{0x4, 0x4, {0x10, 0xf0, 0}},
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{0xf, 0x5, {0x8, 0xf0, 0}}
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};
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unsigned char finfo = sframe_fde_func_info (SFRAME_FRE_TYPE_ADDR1,
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SFRAME_FDE_TYPE_PCINC);
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err = sframe_encoder_add_funcdesc (encode, 0xfffff059, 0x10, finfo, 4);
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if (err == -1)
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return err;
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for (i = 0; i < 4; i++)
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if (sframe_encoder_add_fre (encode, idx, fres+i) == SFRAME_ERR)
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return -1;
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return 0;
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}
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/*
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* SFrame info from the following source (2 fdes, 4 fres in each fde):
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* static int cnt;
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* int foo() { return ++cnt; }
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* int main() { return foo(); }
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*/
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#define DATA "DATA2"
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static int
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data_match (char *sframe_buf, size_t sz)
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{
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FILE *fp;
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struct stat st;
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char *sf_buf;
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size_t sf_size;
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int diffs;
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fp = fopen (DATA, "r");
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if (fp == NULL)
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return 0;
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if (fstat (fileno (fp), &st) < 0)
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{
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perror ("fstat");
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fclose (fp);
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return 0;
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}
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sf_buf = malloc (st.st_size);
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if (sf_buf == NULL)
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{
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perror ("malloc");
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return 0;
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}
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sf_size = fread (sf_buf, 1, st.st_size, fp);
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fclose (fp);
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if (sf_size == 0 || sf_buf == NULL)
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{
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fprintf (stderr, "Encode: Read section failed\n");
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return 0;
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}
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if (sf_size != sz)
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return 0;
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diffs = memcmp (sf_buf, sframe_buf, sz);
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free (sf_buf);
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return diffs == 0;
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}
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int main (void)
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{
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sframe_encoder_ctx *encode;
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sframe_frame_row_entry frep;
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char *sframe_buf;
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size_t sf_size;
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int err = 0;
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unsigned int fde_cnt = 0;
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int match_p = 0;
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#define TEST(name, cond) \
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do \
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{ \
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if (cond) \
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pass (name); \
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else \
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fail (name); \
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} \
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while (0)
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encode = sframe_encode (SFRAME_VERSION, 0,
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SFRAME_ABI_AMD64_ENDIAN_LITTLE,
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SFRAME_CFA_FIXED_FP_INVALID,
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-8, /* Fixed RA offset for AMD64. */
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&err);
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fde_cnt = sframe_encoder_get_num_fidx (encode);
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TEST ("encode-1: Encoder FDE count", fde_cnt == 0);
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err = sframe_encoder_add_fre (encode, 1, &frep);
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TEST ("encode-1: Encoder update workflow", err == SFRAME_ERR);
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err = add_fde1 (encode, 0);
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TEST ("encode-1: Encoder adding FDE1", err == 0);
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err = add_fde2 (encode, 1);
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TEST ("encode-1: Encoder adding FDE2", err == 0);
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fde_cnt = sframe_encoder_get_num_fidx (encode);
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TEST ("encode-1: Encoder FDE count", fde_cnt == 2);
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sframe_buf = sframe_encoder_write (encode, &sf_size, &err);
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TEST ("encode-1: Encoder write", err == 0);
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match_p = data_match (sframe_buf, sf_size);
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TEST ("encode-1: Encode buffer match", match_p == 1);
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sframe_encoder_free (&encode);
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return 0;
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}
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37
libsframe/testsuite/libsframe.encode/encode.exp
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37
libsframe/testsuite/libsframe.encode/encode.exp
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@ -0,0 +1,37 @@
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# Copyright (C) 2022 Free Software Foundation, Inc.
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#
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# This file is part of the GNU Binutils.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program 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
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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# MA 02110-1301, USA.
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#
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load_lib dejagnu.exp
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# Run the tests only if compatible dejagnu gcc pair is found
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if [string equal $COMPAT_DEJAGNU "no"] {
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verbose -log "SFrame testsuite needs perhaps a more recent DejaGnu"
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unsupported encode-1
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return 0;
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}
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catch "exec ln -s $srcdir/libsframe.decode/DATA2 ." status
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if { [host_execute "testsuite/libsframe.encode/encode-1"] ne "" } {
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fail "encode-1"
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}
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catch "exec rm DATA2" status
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7
libsframe/testsuite/libsframe.encode/local.mk
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7
libsframe/testsuite/libsframe.encode/local.mk
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if HAVE_COMPAT_DEJAGNU
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check_PROGRAMS += %D%/encode-1
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endif
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%C%_encode_1_SOURCES = %D%/encode-1.c
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%C%_encode_1_LDADD = ${top_builddir}/libsframe.la
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%C%_encode_1_CPPFLAGS = -I${top_srcdir}/../include -Wall
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