plt-findfre-2.c revision 1.1
1 /* plt-findfre-2.c -- Test for sframe_find_fre for SFrame FDE of type 2 PCMASK with with one SFrame FRE only. 3 4 Copyright (C) 2025 Free Software Foundation, Inc. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 18 19 #include "config.h" 20 21 #include <stdlib.h> 22 #include <string.h> 23 #include <sys/stat.h> 24 25 #include "sframe-api.h" 26 27 /* DejaGnu should not use gnulib's vsnprintf replacement here. */ 28 #undef vsnprintf 29 #include <dejagnu.h> 30 31 /* s390x-specific size in bytes of plt0 and pltN. */ 32 #define PLT_SIZE 32 33 34 /* Magic values added to CFA offsets to make them distingishable. Must 35 be multiple of 8 due to s390x-specific CFA alignment factor. */ 36 #define PLT0_CFA_OFFSET_MAGIC 0 37 #define PLTN_CFA_OFFSET_MAGIC 8 38 39 static int 40 add_plt0_fde (sframe_encoder_ctx *ectx, uint32_t plt_vaddr, 41 uint32_t sframe_vaddr, int idx) 42 { 43 /* 1 single FRE. */ 44 sframe_frame_row_entry fre 45 = { 0x0, 46 { SFRAME_V2_S390X_CFA_OFFSET_ENCODE (160 + PLT0_CFA_OFFSET_MAGIC) }, 47 SFRAME_V1_FRE_INFO (SFRAME_BASE_REG_SP, 1, SFRAME_FRE_OFFSET_1B) }; 48 49 unsigned char finfo = sframe_fde_create_func_info (SFRAME_FRE_TYPE_ADDR1, 50 SFRAME_FDE_TYPE_PCINC); 51 uint32_t offsetof_fde_in_sec 52 = sframe_encoder_get_offsetof_fde_start_addr (ectx, idx, NULL); 53 54 int32_t func_start_addr = (plt_vaddr 55 - (sframe_vaddr + offsetof_fde_in_sec)); 56 57 /* 1 PCINC-type FDE for 1 plt0 entry of 32 bytes. */ 58 int err = sframe_encoder_add_funcdesc_v2 (ectx, func_start_addr, 59 PLT_SIZE /* func size. */, 60 finfo, 61 0 /* rep block size. */, 62 1 /* num FREs. */); 63 if (err == -1) 64 return err; 65 66 if (sframe_encoder_add_fre (ectx, idx, &fre) == SFRAME_ERR) 67 return -1; 68 69 return 0; 70 } 71 72 static int 73 add_pltn_fde (sframe_encoder_ctx *ectx, uint32_t plt_vaddr, 74 uint32_t sframe_vaddr, int idx) 75 { 76 /* 1 single FRE. */ 77 sframe_frame_row_entry fre 78 = { 0x0, 79 { SFRAME_V2_S390X_CFA_OFFSET_ENCODE (160 + PLTN_CFA_OFFSET_MAGIC) }, 80 SFRAME_V1_FRE_INFO (SFRAME_BASE_REG_SP, 1, SFRAME_FRE_OFFSET_1B) }; 81 82 unsigned char finfo = sframe_fde_create_func_info (SFRAME_FRE_TYPE_ADDR1, 83 SFRAME_FDE_TYPE_PCMASK); 84 uint32_t offsetof_fde_in_sec 85 = sframe_encoder_get_offsetof_fde_start_addr (ectx, idx, NULL); 86 87 int32_t func_start_addr = (plt_vaddr 88 - (sframe_vaddr + offsetof_fde_in_sec)); 89 90 /* 1 PCMASK-type FDE for 5 pltN entries of 32 bytes each. */ 91 int err = sframe_encoder_add_funcdesc_v2 (ectx, func_start_addr, 92 5 * PLT_SIZE /* func size. */, 93 finfo, 94 PLT_SIZE /* rep block size. */, 95 1 /* num FREs. */); 96 if (err == -1) 97 return err; 98 99 if (sframe_encoder_add_fre (ectx, idx, &fre) == SFRAME_ERR) 100 return -1; 101 102 return 0; 103 } 104 105 static 106 void test_plt_findfre (const char suffix, const uint32_t plt_vaddr, 107 const uint32_t sframe_vaddr) 108 { 109 sframe_encoder_ctx *ectx; 110 sframe_decoder_ctx *dctx; 111 sframe_frame_row_entry frep; 112 char *sframe_buf; 113 size_t sf_size; 114 int err = 0; 115 unsigned int fde_cnt = 0; 116 int i; 117 118 #define TEST(cond, ...) \ 119 do \ 120 { \ 121 if (cond) \ 122 pass (__VA_ARGS__); \ 123 else \ 124 fail (__VA_ARGS__); \ 125 } \ 126 while (0) 127 128 ectx = sframe_encode (SFRAME_VERSION, SFRAME_F_FDE_FUNC_START_PCREL, 129 SFRAME_ABI_S390X_ENDIAN_BIG, 130 SFRAME_CFA_FIXED_FP_INVALID, 131 SFRAME_CFA_FIXED_RA_INVALID, 132 &err); 133 TEST (ectx != NULL && err == 0, "plt-findfre-2%c: Creating SFrame encoder", suffix); 134 135 err = add_plt0_fde (ectx, plt_vaddr, sframe_vaddr, 0); 136 TEST (err == 0, "plt-findfre-2%c: Adding FDE for plt0", suffix); 137 138 fde_cnt = sframe_encoder_get_num_fidx (ectx); 139 TEST (fde_cnt == 1, "plt-findfre-2%c: Test FDE count after adding FDE for plt0", suffix); 140 141 err = add_pltn_fde (ectx, plt_vaddr + PLT_SIZE, sframe_vaddr, 1); 142 TEST (err == 0, "plt-findfre-2%c: Adding FDE for pltN", suffix); 143 144 fde_cnt = sframe_encoder_get_num_fidx (ectx); 145 TEST (fde_cnt == 2, "plt-findfre-2%c: Test FDE count after adding FDE for pltN", suffix); 146 147 sframe_buf = sframe_encoder_write (ectx, &sf_size, &err); 148 TEST (err == 0, "plt-findfre-2%c: Encoder write", suffix); 149 150 dctx = sframe_decode (sframe_buf, sf_size, &err); 151 TEST (dctx != NULL, "plt-findfre-2%c: Decoder setup", suffix); 152 153 /* Find the only FRE in PLT0 at offset 0. */ 154 err = sframe_find_fre (dctx, (plt_vaddr + 0 - sframe_vaddr), &frep); 155 TEST (err == 0 && sframe_fre_get_cfa_offset (dctx, &frep, &err) == 160 + PLT0_CFA_OFFSET_MAGIC, 156 "plt-findfre-2%c: Find only FRE in PLT0 at offset 0", suffix); 157 158 /* Find the only FRE in PLT0 at offset PLT_SIZE-1. */ 159 err = sframe_find_fre (dctx, (plt_vaddr + (PLT_SIZE-1) - sframe_vaddr), &frep); 160 TEST (err == 0 && sframe_fre_get_cfa_offset (dctx, &frep, &err) == 160 + PLT0_CFA_OFFSET_MAGIC, 161 "plt-findfre-2%c: Find only FRE in PLT0 at offset PLT_SIZE-1", suffix); 162 163 /* Find the only FRE in PLT1-5 at offset 0 and PLT_SIZE-1. */ 164 for (i = 1; i < 5; i++) 165 { 166 /* Find the only FRE in PLTN at offset 0. */ 167 err = sframe_find_fre (dctx, (plt_vaddr + i * PLT_SIZE + 0 - sframe_vaddr), &frep); 168 TEST (err == 0 && sframe_fre_get_cfa_offset (dctx, &frep, &err) == 160 + PLTN_CFA_OFFSET_MAGIC, 169 "plt-findfre-2%c: Find only FRE in PLT%d at offset 0", suffix, i); 170 171 /* Find the only FRE in PLTN at offset 31. */ 172 err = sframe_find_fre (dctx, (plt_vaddr + i * PLT_SIZE + (PLT_SIZE-1) - sframe_vaddr), &frep); 173 TEST (err == 0 && sframe_fre_get_cfa_offset (dctx, &frep, &err) == 160 + PLTN_CFA_OFFSET_MAGIC, 174 "plt-findfre-2%c: Find only FRE in PLT%d at offset PLT_SIZE-1", suffix, i); 175 } 176 177 /* Find no FRE in non-existing PLT6 at offset 0. */ 178 err = sframe_find_fre (dctx, (plt_vaddr + 6 * PLT_SIZE + 0 - sframe_vaddr), &frep); 179 TEST (err != 0, "plt-findfre-2%c: Find no FRE in out of range PLT6 at offset 0", suffix); 180 181 sframe_encoder_free (&ectx); 182 sframe_decoder_free (&dctx); 183 } 184 185 int 186 main (void) 187 { 188 uint32_t sframe_vaddr = 0x402220; 189 uint32_t plt_vaddr = 0x401020; 190 printf ("plt-findfre-2a: Testing with plt_vaddr = %#x; sframe_vaddr = %#x\n", 191 plt_vaddr, sframe_vaddr); 192 test_plt_findfre ('a', plt_vaddr, sframe_vaddr); 193 194 sframe_vaddr = 0x401020; 195 plt_vaddr = 0x402220; 196 printf ("plt-findfre-2b: Testing with plt_vaddr = %#x; sframe_vaddr = %#x\n", 197 plt_vaddr, sframe_vaddr); 198 test_plt_findfre ('b', plt_vaddr, sframe_vaddr); 199 200 return 0; 201 } 202
Indexes created Wed May 06 00:24:28 UTC 2026