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/* plt-findfre-1.c -- Test for sframe_find_fre for SFRAME_FDE_TYPE_PCMASK.
Copyright (C) 2023-2025 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/>. */
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include "sframe-api.h"
/* DejaGnu should not use gnulib's vsnprintf replacement here. */
#undef vsnprintf
#include <dejagnu.h>
static int
add_plt_fde1 (sframe_encoder_ctx *ectx, uint32_t plt_vaddr,
uint32_t sframe_vaddr, int idx)
{
/* A contiguous block containing 3 FREs. The start_ip_offset must remain
less than 16 bytes. */
#define PLT1_NUM_FRES 3
sframe_frame_row_entry fres[PLT1_NUM_FRES]
= { {0x0, {0x1, 0, 0}, 0x3},
{0x6, {0x2, 0xf0, 0}, 0x5},
{0xc, {0x3, 0xf0, 0}, 0x4}
};
unsigned char finfo = sframe_fde_create_func_info (SFRAME_FRE_TYPE_ADDR1,
SFRAME_FDE_TYPE_PCMASK);
uint32_t offsetof_fde_in_sec
= sframe_encoder_get_offsetof_fde_start_addr (ectx, idx, NULL);
int32_t func_start_addr = (plt_vaddr
- (sframe_vaddr + offsetof_fde_in_sec));
/* 5 pltN entries of 16 bytes each. */
int err = sframe_encoder_add_funcdesc_v2 (ectx, func_start_addr,
16 * 5 /* func size in bytes. */,
finfo,
16 /* rep block size in bytes. */,
PLT1_NUM_FRES);
if (err == -1)
return err;
for (unsigned i = 0; i < PLT1_NUM_FRES; i++)
if (sframe_encoder_add_fre (ectx, idx, fres + i) == SFRAME_ERR)
return -1;
return 0;
}
static
void test_plt_findfre (uint32_t plt_vaddr, uint32_t sframe_vaddr)
{
sframe_encoder_ctx *ectx;
sframe_decoder_ctx *dctx;
sframe_frame_row_entry frep;
char *sframe_buf;
size_t sf_size;
int err = 0;
uint32_t fde_cnt = 0;
#define TEST(name, cond) \
do \
{ \
if (cond) \
pass (name); \
else \
fail (name); \
} \
while (0)
ectx = sframe_encode (SFRAME_VERSION, SFRAME_F_FDE_FUNC_START_PCREL,
SFRAME_ABI_AMD64_ENDIAN_LITTLE,
SFRAME_CFA_FIXED_FP_INVALID,
-8, /* Fixed RA offset for AMD64. */
&err);
err = add_plt_fde1 (ectx, plt_vaddr, sframe_vaddr, 0);
TEST ("plt-findfre-1: Adding FDE1 for plt", err == 0);
fde_cnt = sframe_encoder_get_num_fidx (ectx);
TEST ("plt-findfre-1: Test FDE count", fde_cnt == 1);
sframe_buf = sframe_encoder_write (ectx, &sf_size, &err);
TEST ("plt-findfre-1: Encoder write", err == 0);
dctx = sframe_decode (sframe_buf, sf_size, &err);
TEST ("plt-findfre-1: Decoder setup", dctx != NULL);
/* Find the first FRE in PLT1. */
err = sframe_find_fre (dctx, (plt_vaddr + 0x0 - sframe_vaddr), &frep);
TEST ("plt-findfre-1: Find first FRE in PLT1",
(err == 0 && sframe_fre_get_cfa_offset (dctx, &frep, &err) == 0x1));
/* Find the second FRE. */
err = sframe_find_fre (dctx, (plt_vaddr + 0x6 - sframe_vaddr), &frep);
TEST ("plt-findfre-1: Find second FRE in PLT1",
(err == 0 && sframe_fre_get_cfa_offset (dctx, &frep, &err) == 0x2));
/* Find the last FRE. */
err = sframe_find_fre (dctx, (plt_vaddr + 0xc - sframe_vaddr), &frep);
TEST ("plt-findfre-1: Find last FRE in PLT1",
(err == 0 && sframe_fre_get_cfa_offset (dctx, &frep, &err) == 0x3));
/* Find the first FRE in PLT4. */
err = sframe_find_fre (dctx, (plt_vaddr + 16*3 + 0x0 - sframe_vaddr), &frep);
TEST ("plt-findfre-1: Find first FRE in PLT4",
(err == 0 && sframe_fre_get_cfa_offset (dctx, &frep, &err) == 0x1));
/* Find the second FRE in PLT4. */
err = sframe_find_fre (dctx, (plt_vaddr + 16*3 + 0x6 - sframe_vaddr), &frep);
TEST ("plt-findfre-1: Find second FRE in PLT4",
(err == 0 && sframe_fre_get_cfa_offset (dctx, &frep, &err) == 0x2));
/* Find the last FRE in PLT4. */
err = sframe_find_fre (dctx, (plt_vaddr + 16*3 + 0xc - sframe_vaddr), &frep);
TEST ("plt-findfre-1: Find last FRE in PLT4",
(err == 0 && sframe_fre_get_cfa_offset (dctx, &frep, &err) == 0x3));
/* Find no FRE for out of range PLT6. */
err = sframe_find_fre (dctx, (plt_vaddr + 16*5 + 0x0 - sframe_vaddr), &frep);
TEST ("plt-findfre-1: Find no FRE for out of range PLT6", err != 0);
sframe_encoder_free (&ectx);
sframe_decoder_free (&dctx);
}
int main (void)
{
uint32_t sframe_vaddr = 0x402220;
uint32_t plt_vaddr = 0x401020;
printf ("Testing with plt_vaddr = %#x; sframe_vaddr = %#x\n", plt_vaddr,
sframe_vaddr);
test_plt_findfre (plt_vaddr, sframe_vaddr);
sframe_vaddr = 0x401020;
plt_vaddr = 0x402220;
printf ("Testing with plt_vaddr = %#x; sframe_vaddr = %#x\n", plt_vaddr,
sframe_vaddr);
test_plt_findfre (plt_vaddr, sframe_vaddr);
}
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