forked from Imagelibrary/binutils-gdb
6a99f006ec
sframe_get_funcdesc_with_addr API is currently used internally by the sframe_find_fre (). In this test, we create three dummy SFrame FDEs with 4 FREs each. Then, we use few negative tests to lookup FREs with PCs not in the range of PCs covered by the FDEs, ensuring graceful return from sframe_get_funcdesc_with_addr in all cases. Some positive tests are also added that exercise further scenarios as well. libsframe/ * Makefile.in: Regenerated. * testsuite/libsframe.find/find.exp: Include new test. * testsuite/libsframe.find/findfunc-1.c: New Test. * testsuite/libsframe.find/local.mk: Include new test.
205 lines
6.5 KiB
C
205 lines
6.5 KiB
C
/* findfunc-1.c -- Test for sframe_get_funcdesc_with_addr in libsframe.
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Copyright (C) 2023 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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/* sframe_get_funcdesc_with_addr is a core API in the libsframe library, which
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is used to find an FDE given a PC. It is used by sframe_find_fre (). The
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latter is the mainstay for an SFrame based stack tracer.
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The tests in here stress the sframe_get_funcdesc_with_addr API via calls to
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the sframe_find_fre (). */
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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, {0x1, 0, 0}, 0x3},
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{0x1, {0x2, 0xf0, 0}, 0x5},
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{0x10, {0x3, 0xf0, 0}, 0x4},
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{0x38, {0x8, 0xf0, 0}, 0x5}
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};
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unsigned char finfo = sframe_fde_create_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, 0x40, 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, {0x10, 0, 0}, 0x3},
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{0x10, {0x12, 0xf0, 0}, 0x5},
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{0x14, {0x14, 0xf0, 0}, 0x4},
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{0x20, {0x15, 0xf0, 0}, 0x5}
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};
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unsigned char finfo = sframe_fde_create_func_info (SFRAME_FRE_TYPE_ADDR1,
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SFRAME_FDE_TYPE_PCINC);
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err = sframe_encoder_add_funcdesc (encode, 0xfffff08e, 0x60, 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_fde3 (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, {0x16, 0, 0}, 0x3},
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{0x1, {0x17, 0xf0, 0}, 0x5},
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{0x10, {0x18, 0xf0, 0}, 0x4},
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{0x38, {0x19, 0xf0, 0}, 0x5}
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};
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unsigned char finfo = sframe_fde_create_func_info (SFRAME_FRE_TYPE_ADDR1,
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SFRAME_FDE_TYPE_PCINC);
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err = sframe_encoder_add_funcdesc (encode, 0xfffff10e, 0x40, 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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int main (void)
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{
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sframe_encoder_ctx *encode;
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sframe_decoder_ctx *dctx;
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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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#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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/* Add FDE at index 0. */
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err = add_fde1 (encode, 0);
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TEST ("findfunc-1: Adding FDE1", err == 0);
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/* Add FDE at index 1. */
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err = add_fde2 (encode, 1);
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TEST ("findfunc-1: Adding FDE2", err == 0);
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/* Add FDE at index 2. */
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err = add_fde3 (encode, 2);
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TEST ("findfunc-1: Adding FDE3", err == 0);
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fde_cnt = sframe_encoder_get_num_fidx (encode);
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TEST ("findfunc-1: Test FDE count", fde_cnt == 3);
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sframe_buf = sframe_encoder_write (encode, &sf_size, &err);
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TEST ("findfunc-1: Encoder write", err == 0);
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dctx = sframe_decode (sframe_buf, sf_size, &err);
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TEST("findfunc-1: Decoder setup", dctx != NULL);
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/* Following negative tests check that libsframe APIs
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(sframe_get_funcdesc_with_addr, sframe_find_fre) work
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well for PCs not covered by the FDEs. */
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/* Search with PC less than the first FDE's start addr. */
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err = sframe_find_fre (dctx, (0xfffff03e - 0x15), &frep);
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TEST("findfunc-1: test-1: Find FRE for PC not in range",
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(err == SFRAME_ERR));
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/* Search with a PC between func1's last PC and func2's first PC. */
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err = sframe_find_fre (dctx, (0xfffff03e + 0x40 + 0x1), &frep);
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TEST("findfunc-1: test-2: Find FRE for PC not in range",
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(err == SFRAME_ERR));
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/* Search for a PC between func2's last PC and func3's first PC. */
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err = sframe_find_fre (dctx, (0xfffff08e + 0x60 + 0x3), &frep);
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TEST("findfunc-1: test-3: Find FRE for PC not in range",
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(err == SFRAME_ERR));
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/* Search for a PC beyond the last func, i.e., > func3's last PC. */
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err = sframe_find_fre (dctx, (0xfffff10e + 0x40 + 0x10), &frep);
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TEST("findfunc-1: test-4: Find FRE for PC not in range",
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(err == SFRAME_ERR));
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/* And some positive tests... */
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/* Find an FRE for PC in FDE1. */
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err = sframe_find_fre (dctx, (0xfffff03e + 0x9), &frep);
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TEST("findfunc-1: Find FRE in FDE1",
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((err == 0) && (sframe_fre_get_cfa_offset(dctx, &frep, &err) == 0x2)));
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/* Find an FRE for PC in FDE2. */
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err = sframe_find_fre (dctx, (0xfffff08e + 0x11), &frep);
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TEST("findfunc-1: Find FRE in FDE2",
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((err == 0) && (sframe_fre_get_cfa_offset(dctx, &frep, &err) == 0x12)));
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/* Find an FRE for PC in FDE3. */
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err = sframe_find_fre (dctx, (0xfffff10e + 0x10), &frep);
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TEST("findfunc-1: Find FRE in FDE3",
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((err == 0) && (sframe_fre_get_cfa_offset(dctx, &frep, &err) == 0x18)));
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sframe_encoder_free (&encode);
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sframe_decoder_free (&dctx);
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return 0;
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}
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