Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 1 | /* |
| 2 | * PowerPC gdb server stub |
| 3 | * |
| 4 | * Copyright (c) 2003-2005 Fabrice Bellard |
| 5 | * Copyright (c) 2013 SUSE LINUX Products GmbH |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
Chetan Pant | 6bd039c | 2020-10-19 06:11:26 +0000 | [diff] [blame] | 10 | * version 2.1 of the License, or (at your option) any later version. |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 19 | */ |
Peter Maydell | 0d75590 | 2016-01-26 18:16:58 +0000 | [diff] [blame] | 20 | #include "qemu/osdep.h" |
Paolo Bonzini | 33c1187 | 2016-03-15 16:58:45 +0100 | [diff] [blame] | 21 | #include "cpu.h" |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 22 | #include "exec/gdbstub.h" |
Bruno Larsen (billionai) | 35a5d74 | 2021-04-26 15:47:06 -0300 | [diff] [blame] | 23 | #include "internal.h" |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 24 | |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 25 | static int ppc_gdb_register_len_apple(int n) |
| 26 | { |
| 27 | switch (n) { |
| 28 | case 0 ... 31: |
| 29 | /* gprs */ |
| 30 | return 8; |
| 31 | case 32 ... 63: |
| 32 | /* fprs */ |
| 33 | return 8; |
| 34 | case 64 ... 95: |
| 35 | return 16; |
David Gibson | 02381ec | 2019-03-21 21:31:45 +1100 | [diff] [blame] | 36 | case 64 + 32: /* nip */ |
| 37 | case 65 + 32: /* msr */ |
| 38 | case 67 + 32: /* lr */ |
| 39 | case 68 + 32: /* ctr */ |
| 40 | case 70 + 32: /* fpscr */ |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 41 | return 8; |
David Gibson | 02381ec | 2019-03-21 21:31:45 +1100 | [diff] [blame] | 42 | case 66 + 32: /* cr */ |
| 43 | case 69 + 32: /* xer */ |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 44 | return 4; |
| 45 | default: |
| 46 | return 0; |
| 47 | } |
| 48 | } |
| 49 | |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 50 | static int ppc_gdb_register_len(int n) |
| 51 | { |
| 52 | switch (n) { |
| 53 | case 0 ... 31: |
| 54 | /* gprs */ |
| 55 | return sizeof(target_ulong); |
| 56 | case 32 ... 63: |
| 57 | /* fprs */ |
| 58 | if (gdb_has_xml) { |
| 59 | return 0; |
| 60 | } |
| 61 | return 8; |
| 62 | case 66: |
| 63 | /* cr */ |
Michael Matz | a2f0433 | 2018-02-23 17:29:56 +0000 | [diff] [blame] | 64 | case 69: |
| 65 | /* xer */ |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 66 | return 4; |
| 67 | case 64: |
| 68 | /* nip */ |
| 69 | case 65: |
| 70 | /* msr */ |
| 71 | case 67: |
| 72 | /* lr */ |
| 73 | case 68: |
| 74 | /* ctr */ |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 75 | return sizeof(target_ulong); |
| 76 | case 70: |
| 77 | /* fpscr */ |
| 78 | if (gdb_has_xml) { |
| 79 | return 0; |
| 80 | } |
| 81 | return sizeof(target_ulong); |
| 82 | default: |
| 83 | return 0; |
| 84 | } |
| 85 | } |
| 86 | |
David Gibson | 02381ec | 2019-03-21 21:31:45 +1100 | [diff] [blame] | 87 | /* |
| 88 | * We need to present the registers to gdb in the "current" memory |
| 89 | * ordering. For user-only mode we get this for free; |
Marc-André Lureau | ee3eb3a | 2022-03-23 19:57:18 +0400 | [diff] [blame] | 90 | * TARGET_BIG_ENDIAN is set to the proper ordering for the |
David Gibson | 02381ec | 2019-03-21 21:31:45 +1100 | [diff] [blame] | 91 | * binary, and cannot be changed. For system mode, |
Marc-André Lureau | ee3eb3a | 2022-03-23 19:57:18 +0400 | [diff] [blame] | 92 | * TARGET_BIG_ENDIAN is always set, and we must check the current |
David Gibson | 02381ec | 2019-03-21 21:31:45 +1100 | [diff] [blame] | 93 | * mode of the chip to see if we're running in little-endian. |
| 94 | */ |
Greg Kurz | 376dbce | 2016-01-15 16:00:18 +0100 | [diff] [blame] | 95 | void ppc_maybe_bswap_register(CPUPPCState *env, uint8_t *mem_buf, int len) |
Thomas Falcon | 8a286ce | 2014-04-07 17:41:00 -0400 | [diff] [blame] | 96 | { |
Richard Henderson | be5c9dd | 2014-06-28 09:45:28 -0700 | [diff] [blame] | 97 | #ifndef CONFIG_USER_ONLY |
| 98 | if (!msr_le) { |
| 99 | /* do nothing */ |
| 100 | } else if (len == 4) { |
Thomas Falcon | 8a286ce | 2014-04-07 17:41:00 -0400 | [diff] [blame] | 101 | bswap32s((uint32_t *)mem_buf); |
| 102 | } else if (len == 8) { |
| 103 | bswap64s((uint64_t *)mem_buf); |
Matheus Ferst | 0ff16b6 | 2021-08-26 11:56:56 -0300 | [diff] [blame] | 104 | } else if (len == 16) { |
| 105 | bswap128s((Int128 *)mem_buf); |
Thomas Falcon | 8a286ce | 2014-04-07 17:41:00 -0400 | [diff] [blame] | 106 | } else { |
| 107 | g_assert_not_reached(); |
| 108 | } |
Richard Henderson | be5c9dd | 2014-06-28 09:45:28 -0700 | [diff] [blame] | 109 | #endif |
Thomas Falcon | 8a286ce | 2014-04-07 17:41:00 -0400 | [diff] [blame] | 110 | } |
| 111 | |
David Gibson | 02381ec | 2019-03-21 21:31:45 +1100 | [diff] [blame] | 112 | /* |
| 113 | * Old gdb always expects FP registers. Newer (xml-aware) gdb only |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 114 | * expects whatever the target description contains. Due to a |
| 115 | * historical mishap the FP registers appear in between core integer |
David Gibson | 02381ec | 2019-03-21 21:31:45 +1100 | [diff] [blame] | 116 | * regs and PC, MSR, CR, and so forth. We hack round this by giving |
| 117 | * the FP regs zero size when talking to a newer gdb. |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 118 | */ |
| 119 | |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 120 | int ppc_cpu_gdb_read_register(CPUState *cs, GByteArray *buf, int n) |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 121 | { |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 122 | PowerPCCPU *cpu = POWERPC_CPU(cs); |
| 123 | CPUPPCState *env = &cpu->env; |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 124 | uint8_t *mem_buf; |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 125 | int r = ppc_gdb_register_len(n); |
| 126 | |
| 127 | if (!r) { |
| 128 | return r; |
| 129 | } |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 130 | |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 131 | if (n < 32) { |
| 132 | /* gprs */ |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 133 | gdb_get_regl(buf, env->gpr[n]); |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 134 | } else if (n < 64) { |
| 135 | /* fprs */ |
Peter Maydell | 34510e3 | 2021-02-11 12:27:47 +0000 | [diff] [blame] | 136 | gdb_get_reg64(buf, *cpu_fpr_ptr(env, n - 32)); |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 137 | } else { |
| 138 | switch (n) { |
| 139 | case 64: |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 140 | gdb_get_regl(buf, env->nip); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 141 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 142 | case 65: |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 143 | gdb_get_regl(buf, env->msr); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 144 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 145 | case 66: |
| 146 | { |
| 147 | uint32_t cr = 0; |
| 148 | int i; |
| 149 | for (i = 0; i < 8; i++) { |
| 150 | cr |= env->crf[i] << (32 - ((i + 1) * 4)); |
| 151 | } |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 152 | gdb_get_reg32(buf, cr); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 153 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 154 | } |
| 155 | case 67: |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 156 | gdb_get_regl(buf, env->lr); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 157 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 158 | case 68: |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 159 | gdb_get_regl(buf, env->ctr); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 160 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 161 | case 69: |
Matheus Ferst | 7974dc5 | 2021-10-14 19:32:32 -0300 | [diff] [blame] | 162 | gdb_get_reg32(buf, cpu_read_xer(env)); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 163 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 164 | case 70: |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 165 | gdb_get_reg32(buf, env->fpscr); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 166 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 167 | } |
| 168 | } |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 169 | mem_buf = buf->data + buf->len - r; |
Greg Kurz | 376dbce | 2016-01-15 16:00:18 +0100 | [diff] [blame] | 170 | ppc_maybe_bswap_register(env, mem_buf, r); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 171 | return r; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 172 | } |
| 173 | |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 174 | int ppc_cpu_gdb_read_register_apple(CPUState *cs, GByteArray *buf, int n) |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 175 | { |
| 176 | PowerPCCPU *cpu = POWERPC_CPU(cs); |
| 177 | CPUPPCState *env = &cpu->env; |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 178 | uint8_t *mem_buf; |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 179 | int r = ppc_gdb_register_len_apple(n); |
| 180 | |
| 181 | if (!r) { |
| 182 | return r; |
| 183 | } |
| 184 | |
| 185 | if (n < 32) { |
| 186 | /* gprs */ |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 187 | gdb_get_reg64(buf, env->gpr[n]); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 188 | } else if (n < 64) { |
| 189 | /* fprs */ |
Peter Maydell | 34510e3 | 2021-02-11 12:27:47 +0000 | [diff] [blame] | 190 | gdb_get_reg64(buf, *cpu_fpr_ptr(env, n - 32)); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 191 | } else if (n < 96) { |
| 192 | /* Altivec */ |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 193 | gdb_get_reg64(buf, n - 64); |
| 194 | gdb_get_reg64(buf, 0); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 195 | } else { |
| 196 | switch (n) { |
| 197 | case 64 + 32: |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 198 | gdb_get_reg64(buf, env->nip); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 199 | break; |
| 200 | case 65 + 32: |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 201 | gdb_get_reg64(buf, env->msr); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 202 | break; |
| 203 | case 66 + 32: |
| 204 | { |
| 205 | uint32_t cr = 0; |
| 206 | int i; |
| 207 | for (i = 0; i < 8; i++) { |
| 208 | cr |= env->crf[i] << (32 - ((i + 1) * 4)); |
| 209 | } |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 210 | gdb_get_reg32(buf, cr); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 211 | break; |
| 212 | } |
| 213 | case 67 + 32: |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 214 | gdb_get_reg64(buf, env->lr); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 215 | break; |
| 216 | case 68 + 32: |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 217 | gdb_get_reg64(buf, env->ctr); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 218 | break; |
| 219 | case 69 + 32: |
Matheus Ferst | 7974dc5 | 2021-10-14 19:32:32 -0300 | [diff] [blame] | 220 | gdb_get_reg32(buf, cpu_read_xer(env)); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 221 | break; |
| 222 | case 70 + 32: |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 223 | gdb_get_reg64(buf, env->fpscr); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 224 | break; |
| 225 | } |
| 226 | } |
Alex Bennée | a010bdb | 2020-03-16 17:21:41 +0000 | [diff] [blame] | 227 | mem_buf = buf->data + buf->len - r; |
Greg Kurz | 376dbce | 2016-01-15 16:00:18 +0100 | [diff] [blame] | 228 | ppc_maybe_bswap_register(env, mem_buf, r); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 229 | return r; |
| 230 | } |
| 231 | |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 232 | int ppc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 233 | { |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 234 | PowerPCCPU *cpu = POWERPC_CPU(cs); |
| 235 | CPUPPCState *env = &cpu->env; |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 236 | int r = ppc_gdb_register_len(n); |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 237 | |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 238 | if (!r) { |
| 239 | return r; |
| 240 | } |
Greg Kurz | 376dbce | 2016-01-15 16:00:18 +0100 | [diff] [blame] | 241 | ppc_maybe_bswap_register(env, mem_buf, r); |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 242 | if (n < 32) { |
| 243 | /* gprs */ |
| 244 | env->gpr[n] = ldtul_p(mem_buf); |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 245 | } else if (n < 64) { |
| 246 | /* fprs */ |
Peter Maydell | 34510e3 | 2021-02-11 12:27:47 +0000 | [diff] [blame] | 247 | *cpu_fpr_ptr(env, n - 32) = ldq_p(mem_buf); |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 248 | } else { |
| 249 | switch (n) { |
| 250 | case 64: |
| 251 | env->nip = ldtul_p(mem_buf); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 252 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 253 | case 65: |
| 254 | ppc_store_msr(env, ldtul_p(mem_buf)); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 255 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 256 | case 66: |
| 257 | { |
| 258 | uint32_t cr = ldl_p(mem_buf); |
| 259 | int i; |
| 260 | for (i = 0; i < 8; i++) { |
| 261 | env->crf[i] = (cr >> (32 - ((i + 1) * 4))) & 0xF; |
| 262 | } |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 263 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 264 | } |
| 265 | case 67: |
| 266 | env->lr = ldtul_p(mem_buf); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 267 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 268 | case 68: |
| 269 | env->ctr = ldtul_p(mem_buf); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 270 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 271 | case 69: |
Matheus Ferst | 7974dc5 | 2021-10-14 19:32:32 -0300 | [diff] [blame] | 272 | cpu_write_xer(env, ldl_p(mem_buf)); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 273 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 274 | case 70: |
| 275 | /* fpscr */ |
Bruno Larsen (billionai) | fe43ba9 | 2021-05-27 13:35:22 -0300 | [diff] [blame] | 276 | ppc_store_fpscr(env, ldtul_p(mem_buf)); |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 277 | break; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 278 | } |
| 279 | } |
Thomas Falcon | c46e983 | 2014-04-07 17:40:59 -0400 | [diff] [blame] | 280 | return r; |
Andreas Färber | 0980bfa | 2013-07-07 12:26:33 +0200 | [diff] [blame] | 281 | } |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 282 | int ppc_cpu_gdb_write_register_apple(CPUState *cs, uint8_t *mem_buf, int n) |
| 283 | { |
| 284 | PowerPCCPU *cpu = POWERPC_CPU(cs); |
| 285 | CPUPPCState *env = &cpu->env; |
| 286 | int r = ppc_gdb_register_len_apple(n); |
| 287 | |
| 288 | if (!r) { |
| 289 | return r; |
| 290 | } |
Greg Kurz | 376dbce | 2016-01-15 16:00:18 +0100 | [diff] [blame] | 291 | ppc_maybe_bswap_register(env, mem_buf, r); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 292 | if (n < 32) { |
| 293 | /* gprs */ |
| 294 | env->gpr[n] = ldq_p(mem_buf); |
| 295 | } else if (n < 64) { |
| 296 | /* fprs */ |
Peter Maydell | 34510e3 | 2021-02-11 12:27:47 +0000 | [diff] [blame] | 297 | *cpu_fpr_ptr(env, n - 32) = ldq_p(mem_buf); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 298 | } else { |
| 299 | switch (n) { |
| 300 | case 64 + 32: |
| 301 | env->nip = ldq_p(mem_buf); |
| 302 | break; |
| 303 | case 65 + 32: |
| 304 | ppc_store_msr(env, ldq_p(mem_buf)); |
| 305 | break; |
| 306 | case 66 + 32: |
| 307 | { |
| 308 | uint32_t cr = ldl_p(mem_buf); |
| 309 | int i; |
| 310 | for (i = 0; i < 8; i++) { |
| 311 | env->crf[i] = (cr >> (32 - ((i + 1) * 4))) & 0xF; |
| 312 | } |
| 313 | break; |
| 314 | } |
| 315 | case 67 + 32: |
| 316 | env->lr = ldq_p(mem_buf); |
| 317 | break; |
| 318 | case 68 + 32: |
| 319 | env->ctr = ldq_p(mem_buf); |
| 320 | break; |
| 321 | case 69 + 32: |
Matheus Ferst | 7974dc5 | 2021-10-14 19:32:32 -0300 | [diff] [blame] | 322 | cpu_write_xer(env, ldl_p(mem_buf)); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 323 | break; |
| 324 | case 70 + 32: |
| 325 | /* fpscr */ |
Bruno Larsen (billionai) | fe43ba9 | 2021-05-27 13:35:22 -0300 | [diff] [blame] | 326 | ppc_store_fpscr(env, ldq_p(mem_buf)); |
Alexander Graf | b3cad3a | 2014-06-23 15:23:08 +0200 | [diff] [blame] | 327 | break; |
| 328 | } |
| 329 | } |
| 330 | return r; |
| 331 | } |
Fabiano Rosas | 707c7c2 | 2019-02-06 14:51:33 -0200 | [diff] [blame] | 332 | |
| 333 | #ifndef CONFIG_USER_ONLY |
| 334 | void ppc_gdb_gen_spr_xml(PowerPCCPU *cpu) |
| 335 | { |
| 336 | PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cpu); |
| 337 | CPUPPCState *env = &cpu->env; |
| 338 | GString *xml; |
| 339 | char *spr_name; |
| 340 | unsigned int num_regs = 0; |
| 341 | int i; |
| 342 | |
| 343 | if (pcc->gdb_spr_xml) { |
| 344 | return; |
| 345 | } |
| 346 | |
| 347 | xml = g_string_new("<?xml version=\"1.0\"?>"); |
| 348 | g_string_append(xml, "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">"); |
| 349 | g_string_append(xml, "<feature name=\"org.qemu.power.spr\">"); |
| 350 | |
| 351 | for (i = 0; i < ARRAY_SIZE(env->spr_cb); i++) { |
| 352 | ppc_spr_t *spr = &env->spr_cb[i]; |
| 353 | |
| 354 | if (!spr->name) { |
| 355 | continue; |
| 356 | } |
| 357 | |
| 358 | spr_name = g_ascii_strdown(spr->name, -1); |
| 359 | g_string_append_printf(xml, "<reg name=\"%s\"", spr_name); |
| 360 | g_free(spr_name); |
| 361 | |
| 362 | g_string_append_printf(xml, " bitsize=\"%d\"", TARGET_LONG_BITS); |
| 363 | g_string_append(xml, " group=\"spr\"/>"); |
| 364 | |
| 365 | /* |
| 366 | * GDB identifies registers based on the order they are |
| 367 | * presented in the XML. These ids will not match QEMU's |
| 368 | * representation (which follows the PowerISA). |
| 369 | * |
| 370 | * Store the position of the current register description so |
| 371 | * we can make the correspondence later. |
| 372 | */ |
| 373 | spr->gdb_id = num_regs; |
| 374 | num_regs++; |
| 375 | } |
| 376 | |
| 377 | g_string_append(xml, "</feature>"); |
| 378 | |
| 379 | pcc->gdb_num_sprs = num_regs; |
| 380 | pcc->gdb_spr_xml = g_string_free(xml, false); |
| 381 | } |
| 382 | |
| 383 | const char *ppc_gdb_get_dynamic_xml(CPUState *cs, const char *xml_name) |
| 384 | { |
| 385 | PowerPCCPUClass *pcc = POWERPC_CPU_GET_CLASS(cs); |
| 386 | |
| 387 | if (strcmp(xml_name, "power-spr.xml") == 0) { |
| 388 | return pcc->gdb_spr_xml; |
| 389 | } |
| 390 | return NULL; |
| 391 | } |
| 392 | #endif |
Bruno Larsen (billionai) | 35a5d74 | 2021-04-26 15:47:06 -0300 | [diff] [blame] | 393 | |
Bruno Larsen (billionai) | 35a5d74 | 2021-04-26 15:47:06 -0300 | [diff] [blame] | 394 | #if !defined(CONFIG_USER_ONLY) |
| 395 | static int gdb_find_spr_idx(CPUPPCState *env, int n) |
| 396 | { |
| 397 | int i; |
| 398 | |
| 399 | for (i = 0; i < ARRAY_SIZE(env->spr_cb); i++) { |
| 400 | ppc_spr_t *spr = &env->spr_cb[i]; |
| 401 | |
| 402 | if (spr->name && spr->gdb_id == n) { |
| 403 | return i; |
| 404 | } |
| 405 | } |
| 406 | return -1; |
| 407 | } |
| 408 | |
| 409 | static int gdb_get_spr_reg(CPUPPCState *env, GByteArray *buf, int n) |
| 410 | { |
| 411 | int reg; |
| 412 | int len; |
| 413 | |
| 414 | reg = gdb_find_spr_idx(env, n); |
| 415 | if (reg < 0) { |
| 416 | return 0; |
| 417 | } |
| 418 | |
| 419 | len = TARGET_LONG_SIZE; |
| 420 | gdb_get_regl(buf, env->spr[reg]); |
| 421 | ppc_maybe_bswap_register(env, gdb_get_reg_ptr(buf, len), len); |
| 422 | return len; |
| 423 | } |
| 424 | |
| 425 | static int gdb_set_spr_reg(CPUPPCState *env, uint8_t *mem_buf, int n) |
| 426 | { |
| 427 | int reg; |
| 428 | int len; |
| 429 | |
| 430 | reg = gdb_find_spr_idx(env, n); |
| 431 | if (reg < 0) { |
| 432 | return 0; |
| 433 | } |
| 434 | |
| 435 | len = TARGET_LONG_SIZE; |
| 436 | ppc_maybe_bswap_register(env, mem_buf, len); |
| 437 | env->spr[reg] = ldn_p(mem_buf, len); |
| 438 | |
| 439 | return len; |
| 440 | } |
| 441 | #endif |
| 442 | |
| 443 | static int gdb_get_float_reg(CPUPPCState *env, GByteArray *buf, int n) |
| 444 | { |
| 445 | uint8_t *mem_buf; |
| 446 | if (n < 32) { |
| 447 | gdb_get_reg64(buf, *cpu_fpr_ptr(env, n)); |
| 448 | mem_buf = gdb_get_reg_ptr(buf, 8); |
| 449 | ppc_maybe_bswap_register(env, mem_buf, 8); |
| 450 | return 8; |
| 451 | } |
| 452 | if (n == 32) { |
| 453 | gdb_get_reg32(buf, env->fpscr); |
| 454 | mem_buf = gdb_get_reg_ptr(buf, 4); |
| 455 | ppc_maybe_bswap_register(env, mem_buf, 4); |
| 456 | return 4; |
| 457 | } |
| 458 | return 0; |
| 459 | } |
| 460 | |
| 461 | static int gdb_set_float_reg(CPUPPCState *env, uint8_t *mem_buf, int n) |
| 462 | { |
| 463 | if (n < 32) { |
| 464 | ppc_maybe_bswap_register(env, mem_buf, 8); |
| 465 | *cpu_fpr_ptr(env, n) = ldq_p(mem_buf); |
| 466 | return 8; |
| 467 | } |
| 468 | if (n == 32) { |
| 469 | ppc_maybe_bswap_register(env, mem_buf, 4); |
Bruno Larsen (billionai) | fe43ba9 | 2021-05-27 13:35:22 -0300 | [diff] [blame] | 470 | ppc_store_fpscr(env, ldl_p(mem_buf)); |
Bruno Larsen (billionai) | 35a5d74 | 2021-04-26 15:47:06 -0300 | [diff] [blame] | 471 | return 4; |
| 472 | } |
| 473 | return 0; |
| 474 | } |
| 475 | |
| 476 | static int gdb_get_avr_reg(CPUPPCState *env, GByteArray *buf, int n) |
| 477 | { |
| 478 | uint8_t *mem_buf; |
| 479 | |
| 480 | if (n < 32) { |
| 481 | ppc_avr_t *avr = cpu_avr_ptr(env, n); |
Matheus Ferst | 0ff16b6 | 2021-08-26 11:56:56 -0300 | [diff] [blame] | 482 | gdb_get_reg128(buf, avr->VsrD(0), avr->VsrD(1)); |
Bruno Larsen (billionai) | 35a5d74 | 2021-04-26 15:47:06 -0300 | [diff] [blame] | 483 | mem_buf = gdb_get_reg_ptr(buf, 16); |
Matheus Ferst | 0ff16b6 | 2021-08-26 11:56:56 -0300 | [diff] [blame] | 484 | ppc_maybe_bswap_register(env, mem_buf, 16); |
Bruno Larsen (billionai) | 35a5d74 | 2021-04-26 15:47:06 -0300 | [diff] [blame] | 485 | return 16; |
| 486 | } |
| 487 | if (n == 32) { |
Bruno Larsen (billionai) | c19940d | 2021-05-12 11:08:03 -0300 | [diff] [blame] | 488 | gdb_get_reg32(buf, ppc_get_vscr(env)); |
Bruno Larsen (billionai) | 35a5d74 | 2021-04-26 15:47:06 -0300 | [diff] [blame] | 489 | mem_buf = gdb_get_reg_ptr(buf, 4); |
| 490 | ppc_maybe_bswap_register(env, mem_buf, 4); |
| 491 | return 4; |
| 492 | } |
| 493 | if (n == 33) { |
| 494 | gdb_get_reg32(buf, (uint32_t)env->spr[SPR_VRSAVE]); |
| 495 | mem_buf = gdb_get_reg_ptr(buf, 4); |
| 496 | ppc_maybe_bswap_register(env, mem_buf, 4); |
| 497 | return 4; |
| 498 | } |
| 499 | return 0; |
| 500 | } |
| 501 | |
| 502 | static int gdb_set_avr_reg(CPUPPCState *env, uint8_t *mem_buf, int n) |
| 503 | { |
| 504 | if (n < 32) { |
| 505 | ppc_avr_t *avr = cpu_avr_ptr(env, n); |
Matheus Ferst | 0ff16b6 | 2021-08-26 11:56:56 -0300 | [diff] [blame] | 506 | ppc_maybe_bswap_register(env, mem_buf, 16); |
| 507 | avr->VsrD(0) = ldq_p(mem_buf); |
| 508 | avr->VsrD(1) = ldq_p(mem_buf + 8); |
Bruno Larsen (billionai) | 35a5d74 | 2021-04-26 15:47:06 -0300 | [diff] [blame] | 509 | return 16; |
| 510 | } |
| 511 | if (n == 32) { |
| 512 | ppc_maybe_bswap_register(env, mem_buf, 4); |
Bruno Larsen (billionai) | c19940d | 2021-05-12 11:08:03 -0300 | [diff] [blame] | 513 | ppc_store_vscr(env, ldl_p(mem_buf)); |
Bruno Larsen (billionai) | 35a5d74 | 2021-04-26 15:47:06 -0300 | [diff] [blame] | 514 | return 4; |
| 515 | } |
| 516 | if (n == 33) { |
| 517 | ppc_maybe_bswap_register(env, mem_buf, 4); |
| 518 | env->spr[SPR_VRSAVE] = (target_ulong)ldl_p(mem_buf); |
| 519 | return 4; |
| 520 | } |
| 521 | return 0; |
| 522 | } |
| 523 | |
| 524 | static int gdb_get_spe_reg(CPUPPCState *env, GByteArray *buf, int n) |
| 525 | { |
| 526 | if (n < 32) { |
| 527 | #if defined(TARGET_PPC64) |
| 528 | gdb_get_reg32(buf, env->gpr[n] >> 32); |
| 529 | ppc_maybe_bswap_register(env, gdb_get_reg_ptr(buf, 4), 4); |
| 530 | #else |
| 531 | gdb_get_reg32(buf, env->gprh[n]); |
| 532 | #endif |
| 533 | return 4; |
| 534 | } |
| 535 | if (n == 32) { |
| 536 | gdb_get_reg64(buf, env->spe_acc); |
| 537 | ppc_maybe_bswap_register(env, gdb_get_reg_ptr(buf, 8), 8); |
| 538 | return 8; |
| 539 | } |
| 540 | if (n == 33) { |
| 541 | gdb_get_reg32(buf, env->spe_fscr); |
| 542 | ppc_maybe_bswap_register(env, gdb_get_reg_ptr(buf, 4), 4); |
| 543 | return 4; |
| 544 | } |
| 545 | return 0; |
| 546 | } |
| 547 | |
| 548 | static int gdb_set_spe_reg(CPUPPCState *env, uint8_t *mem_buf, int n) |
| 549 | { |
| 550 | if (n < 32) { |
| 551 | #if defined(TARGET_PPC64) |
| 552 | target_ulong lo = (uint32_t)env->gpr[n]; |
| 553 | target_ulong hi; |
| 554 | |
| 555 | ppc_maybe_bswap_register(env, mem_buf, 4); |
| 556 | |
| 557 | hi = (target_ulong)ldl_p(mem_buf) << 32; |
| 558 | env->gpr[n] = lo | hi; |
| 559 | #else |
| 560 | env->gprh[n] = ldl_p(mem_buf); |
| 561 | #endif |
| 562 | return 4; |
| 563 | } |
| 564 | if (n == 32) { |
| 565 | ppc_maybe_bswap_register(env, mem_buf, 8); |
| 566 | env->spe_acc = ldq_p(mem_buf); |
| 567 | return 8; |
| 568 | } |
| 569 | if (n == 33) { |
| 570 | ppc_maybe_bswap_register(env, mem_buf, 4); |
| 571 | env->spe_fscr = ldl_p(mem_buf); |
| 572 | return 4; |
| 573 | } |
| 574 | return 0; |
| 575 | } |
| 576 | |
| 577 | static int gdb_get_vsx_reg(CPUPPCState *env, GByteArray *buf, int n) |
| 578 | { |
| 579 | if (n < 32) { |
| 580 | gdb_get_reg64(buf, *cpu_vsrl_ptr(env, n)); |
| 581 | ppc_maybe_bswap_register(env, gdb_get_reg_ptr(buf, 8), 8); |
| 582 | return 8; |
| 583 | } |
| 584 | return 0; |
| 585 | } |
| 586 | |
| 587 | static int gdb_set_vsx_reg(CPUPPCState *env, uint8_t *mem_buf, int n) |
| 588 | { |
| 589 | if (n < 32) { |
| 590 | ppc_maybe_bswap_register(env, mem_buf, 8); |
| 591 | *cpu_vsrl_ptr(env, n) = ldq_p(mem_buf); |
| 592 | return 8; |
| 593 | } |
| 594 | return 0; |
| 595 | } |
| 596 | |
| 597 | gchar *ppc_gdb_arch_name(CPUState *cs) |
| 598 | { |
| 599 | #if defined(TARGET_PPC64) |
| 600 | return g_strdup("powerpc:common64"); |
| 601 | #else |
| 602 | return g_strdup("powerpc:common"); |
| 603 | #endif |
| 604 | } |
| 605 | |
| 606 | void ppc_gdb_init(CPUState *cs, PowerPCCPUClass *pcc) |
| 607 | { |
| 608 | if (pcc->insns_flags & PPC_FLOAT) { |
| 609 | gdb_register_coprocessor(cs, gdb_get_float_reg, gdb_set_float_reg, |
| 610 | 33, "power-fpu.xml", 0); |
| 611 | } |
| 612 | if (pcc->insns_flags & PPC_ALTIVEC) { |
| 613 | gdb_register_coprocessor(cs, gdb_get_avr_reg, gdb_set_avr_reg, |
| 614 | 34, "power-altivec.xml", 0); |
| 615 | } |
| 616 | if (pcc->insns_flags & PPC_SPE) { |
| 617 | gdb_register_coprocessor(cs, gdb_get_spe_reg, gdb_set_spe_reg, |
| 618 | 34, "power-spe.xml", 0); |
| 619 | } |
| 620 | if (pcc->insns_flags2 & PPC2_VSX) { |
| 621 | gdb_register_coprocessor(cs, gdb_get_vsx_reg, gdb_set_vsx_reg, |
| 622 | 32, "power-vsx.xml", 0); |
| 623 | } |
| 624 | #ifndef CONFIG_USER_ONLY |
| 625 | gdb_register_coprocessor(cs, gdb_get_spr_reg, gdb_set_spr_reg, |
| 626 | pcc->gdb_num_sprs, "power-spr.xml", 0); |
| 627 | #endif |
| 628 | } |