1 /* 2 * Copyright (c) 2013-2022, Arm Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #ifndef CONTEXT_H 8 #define CONTEXT_H 9 10 #include <lib/utils_def.h> 11 12 /******************************************************************************* 13 * Constants that allow assembler code to access members of and the 'gp_regs' 14 * structure at their correct offsets. 15 ******************************************************************************/ 16 #define CTX_GPREGS_OFFSET U(0x0) 17 #define CTX_GPREG_X0 U(0x0) 18 #define CTX_GPREG_X1 U(0x8) 19 #define CTX_GPREG_X2 U(0x10) 20 #define CTX_GPREG_X3 U(0x18) 21 #define CTX_GPREG_X4 U(0x20) 22 #define CTX_GPREG_X5 U(0x28) 23 #define CTX_GPREG_X6 U(0x30) 24 #define CTX_GPREG_X7 U(0x38) 25 #define CTX_GPREG_X8 U(0x40) 26 #define CTX_GPREG_X9 U(0x48) 27 #define CTX_GPREG_X10 U(0x50) 28 #define CTX_GPREG_X11 U(0x58) 29 #define CTX_GPREG_X12 U(0x60) 30 #define CTX_GPREG_X13 U(0x68) 31 #define CTX_GPREG_X14 U(0x70) 32 #define CTX_GPREG_X15 U(0x78) 33 #define CTX_GPREG_X16 U(0x80) 34 #define CTX_GPREG_X17 U(0x88) 35 #define CTX_GPREG_X18 U(0x90) 36 #define CTX_GPREG_X19 U(0x98) 37 #define CTX_GPREG_X20 U(0xa0) 38 #define CTX_GPREG_X21 U(0xa8) 39 #define CTX_GPREG_X22 U(0xb0) 40 #define CTX_GPREG_X23 U(0xb8) 41 #define CTX_GPREG_X24 U(0xc0) 42 #define CTX_GPREG_X25 U(0xc8) 43 #define CTX_GPREG_X26 U(0xd0) 44 #define CTX_GPREG_X27 U(0xd8) 45 #define CTX_GPREG_X28 U(0xe0) 46 #define CTX_GPREG_X29 U(0xe8) 47 #define CTX_GPREG_LR U(0xf0) 48 #define CTX_GPREG_SP_EL0 U(0xf8) 49 #define CTX_GPREGS_END U(0x100) 50 51 /******************************************************************************* 52 * Constants that allow assembler code to access members of and the 'el3_state' 53 * structure at their correct offsets. Note that some of the registers are only 54 * 32-bits wide but are stored as 64-bit values for convenience 55 ******************************************************************************/ 56 #define CTX_EL3STATE_OFFSET (CTX_GPREGS_OFFSET + CTX_GPREGS_END) 57 #define CTX_SCR_EL3 U(0x0) 58 #define CTX_ESR_EL3 U(0x8) 59 #define CTX_RUNTIME_SP U(0x10) 60 #define CTX_SPSR_EL3 U(0x18) 61 #define CTX_ELR_EL3 U(0x20) 62 #define CTX_PMCR_EL0 U(0x28) 63 #define CTX_IS_IN_EL3 U(0x30) 64 #define CTX_CPTR_EL3 U(0x38) 65 #define CTX_ZCR_EL3 U(0x40) 66 #define CTX_EL3STATE_END U(0x50) /* Align to the next 16 byte boundary */ 67 68 /******************************************************************************* 69 * Constants that allow assembler code to access members of and the 70 * 'el1_sys_regs' structure at their correct offsets. Note that some of the 71 * registers are only 32-bits wide but are stored as 64-bit values for 72 * convenience 73 ******************************************************************************/ 74 #define CTX_EL1_SYSREGS_OFFSET (CTX_EL3STATE_OFFSET + CTX_EL3STATE_END) 75 #define CTX_SPSR_EL1 U(0x0) 76 #define CTX_ELR_EL1 U(0x8) 77 #define CTX_SCTLR_EL1 U(0x10) 78 #define CTX_TCR_EL1 U(0x18) 79 #define CTX_CPACR_EL1 U(0x20) 80 #define CTX_CSSELR_EL1 U(0x28) 81 #define CTX_SP_EL1 U(0x30) 82 #define CTX_ESR_EL1 U(0x38) 83 #define CTX_TTBR0_EL1 U(0x40) 84 #define CTX_TTBR1_EL1 U(0x48) 85 #define CTX_MAIR_EL1 U(0x50) 86 #define CTX_AMAIR_EL1 U(0x58) 87 #define CTX_ACTLR_EL1 U(0x60) 88 #define CTX_TPIDR_EL1 U(0x68) 89 #define CTX_TPIDR_EL0 U(0x70) 90 #define CTX_TPIDRRO_EL0 U(0x78) 91 #define CTX_PAR_EL1 U(0x80) 92 #define CTX_FAR_EL1 U(0x88) 93 #define CTX_AFSR0_EL1 U(0x90) 94 #define CTX_AFSR1_EL1 U(0x98) 95 #define CTX_CONTEXTIDR_EL1 U(0xa0) 96 #define CTX_VBAR_EL1 U(0xa8) 97 98 /* 99 * If the platform is AArch64-only, there is no need to save and restore these 100 * AArch32 registers. 101 */ 102 #if CTX_INCLUDE_AARCH32_REGS 103 #define CTX_SPSR_ABT U(0xb0) /* Align to the next 16 byte boundary */ 104 #define CTX_SPSR_UND U(0xb8) 105 #define CTX_SPSR_IRQ U(0xc0) 106 #define CTX_SPSR_FIQ U(0xc8) 107 #define CTX_DACR32_EL2 U(0xd0) 108 #define CTX_IFSR32_EL2 U(0xd8) 109 #define CTX_AARCH32_END U(0xe0) /* Align to the next 16 byte boundary */ 110 #else 111 #define CTX_AARCH32_END U(0xb0) /* Align to the next 16 byte boundary */ 112 #endif /* CTX_INCLUDE_AARCH32_REGS */ 113 114 /* 115 * If the timer registers aren't saved and restored, we don't have to reserve 116 * space for them in the context 117 */ 118 #if NS_TIMER_SWITCH 119 #define CTX_CNTP_CTL_EL0 (CTX_AARCH32_END + U(0x0)) 120 #define CTX_CNTP_CVAL_EL0 (CTX_AARCH32_END + U(0x8)) 121 #define CTX_CNTV_CTL_EL0 (CTX_AARCH32_END + U(0x10)) 122 #define CTX_CNTV_CVAL_EL0 (CTX_AARCH32_END + U(0x18)) 123 #define CTX_CNTKCTL_EL1 (CTX_AARCH32_END + U(0x20)) 124 #define CTX_TIMER_SYSREGS_END (CTX_AARCH32_END + U(0x30)) /* Align to the next 16 byte boundary */ 125 #else 126 #define CTX_TIMER_SYSREGS_END CTX_AARCH32_END 127 #endif /* NS_TIMER_SWITCH */ 128 129 #if CTX_INCLUDE_MTE_REGS 130 #define CTX_TFSRE0_EL1 (CTX_TIMER_SYSREGS_END + U(0x0)) 131 #define CTX_TFSR_EL1 (CTX_TIMER_SYSREGS_END + U(0x8)) 132 #define CTX_RGSR_EL1 (CTX_TIMER_SYSREGS_END + U(0x10)) 133 #define CTX_GCR_EL1 (CTX_TIMER_SYSREGS_END + U(0x18)) 134 135 /* Align to the next 16 byte boundary */ 136 #define CTX_MTE_REGS_END (CTX_TIMER_SYSREGS_END + U(0x20)) 137 #else 138 #define CTX_MTE_REGS_END CTX_TIMER_SYSREGS_END 139 #endif /* CTX_INCLUDE_MTE_REGS */ 140 141 /* 142 * End of system registers. 143 */ 144 #define CTX_EL1_SYSREGS_END CTX_MTE_REGS_END 145 146 /* 147 * EL2 register set 148 */ 149 150 #if CTX_INCLUDE_EL2_REGS 151 /* For later discussion 152 * ICH_AP0R<n>_EL2 153 * ICH_AP1R<n>_EL2 154 * AMEVCNTVOFF0<n>_EL2 155 * AMEVCNTVOFF1<n>_EL2 156 * ICH_LR<n>_EL2 157 */ 158 #define CTX_EL2_SYSREGS_OFFSET (CTX_EL1_SYSREGS_OFFSET + CTX_EL1_SYSREGS_END) 159 160 #define CTX_ACTLR_EL2 U(0x0) 161 #define CTX_AFSR0_EL2 U(0x8) 162 #define CTX_AFSR1_EL2 U(0x10) 163 #define CTX_AMAIR_EL2 U(0x18) 164 #define CTX_CNTHCTL_EL2 U(0x20) 165 #define CTX_CNTVOFF_EL2 U(0x28) 166 #define CTX_CPTR_EL2 U(0x30) 167 #define CTX_DBGVCR32_EL2 U(0x38) 168 #define CTX_ELR_EL2 U(0x40) 169 #define CTX_ESR_EL2 U(0x48) 170 #define CTX_FAR_EL2 U(0x50) 171 #define CTX_HACR_EL2 U(0x58) 172 #define CTX_HCR_EL2 U(0x60) 173 #define CTX_HPFAR_EL2 U(0x68) 174 #define CTX_HSTR_EL2 U(0x70) 175 #define CTX_ICC_SRE_EL2 U(0x78) 176 #define CTX_ICH_HCR_EL2 U(0x80) 177 #define CTX_ICH_VMCR_EL2 U(0x88) 178 #define CTX_MAIR_EL2 U(0x90) 179 #define CTX_MDCR_EL2 U(0x98) 180 #define CTX_PMSCR_EL2 U(0xa0) 181 #define CTX_SCTLR_EL2 U(0xa8) 182 #define CTX_SPSR_EL2 U(0xb0) 183 #define CTX_SP_EL2 U(0xb8) 184 #define CTX_TCR_EL2 U(0xc0) 185 #define CTX_TPIDR_EL2 U(0xc8) 186 #define CTX_TTBR0_EL2 U(0xd0) 187 #define CTX_VBAR_EL2 U(0xd8) 188 #define CTX_VMPIDR_EL2 U(0xe0) 189 #define CTX_VPIDR_EL2 U(0xe8) 190 #define CTX_VTCR_EL2 U(0xf0) 191 #define CTX_VTTBR_EL2 U(0xf8) 192 193 // Only if MTE registers in use 194 #define CTX_TFSR_EL2 U(0x100) 195 196 #define CTX_MPAM2_EL2 U(0x108) 197 #define CTX_MPAMHCR_EL2 U(0x110) 198 #define CTX_MPAMVPM0_EL2 U(0x118) 199 #define CTX_MPAMVPM1_EL2 U(0x120) 200 #define CTX_MPAMVPM2_EL2 U(0x128) 201 #define CTX_MPAMVPM3_EL2 U(0x130) 202 #define CTX_MPAMVPM4_EL2 U(0x138) 203 #define CTX_MPAMVPM5_EL2 U(0x140) 204 #define CTX_MPAMVPM6_EL2 U(0x148) 205 #define CTX_MPAMVPM7_EL2 U(0x150) 206 #define CTX_MPAMVPMV_EL2 U(0x158) 207 208 // Starting with Armv8.6 209 #define CTX_HDFGRTR_EL2 U(0x160) 210 #define CTX_HAFGRTR_EL2 U(0x168) 211 #define CTX_HDFGWTR_EL2 U(0x170) 212 #define CTX_HFGITR_EL2 U(0x178) 213 #define CTX_HFGRTR_EL2 U(0x180) 214 #define CTX_HFGWTR_EL2 U(0x188) 215 #define CTX_CNTPOFF_EL2 U(0x190) 216 217 // Starting with Armv8.4 218 #define CTX_CONTEXTIDR_EL2 U(0x198) 219 #define CTX_TTBR1_EL2 U(0x1a0) 220 #define CTX_VDISR_EL2 U(0x1a8) 221 #define CTX_VSESR_EL2 U(0x1b0) 222 #define CTX_VNCR_EL2 U(0x1b8) 223 #define CTX_TRFCR_EL2 U(0x1c0) 224 225 // Starting with Armv8.5 226 #define CTX_SCXTNUM_EL2 U(0x1c8) 227 228 // Register for FEAT_HCX 229 #define CTX_HCRX_EL2 U(0x1d0) 230 231 // Starting with Armv8.9 232 #define CTX_TCR2_EL2 U(0x1d8) 233 #define CTX_POR_EL2 U(0x1e0) 234 #define CTX_PIRE0_EL2 U(0x1e8) 235 #define CTX_PIR_EL2 U(0x1f0) 236 #define CTX_S2PIR_EL2 U(0x1f8) 237 238 /* Align to the next 16 byte boundary */ 239 #define CTX_EL2_SYSREGS_END U(0x200) 240 241 #endif /* CTX_INCLUDE_EL2_REGS */ 242 243 /******************************************************************************* 244 * Constants that allow assembler code to access members of and the 'fp_regs' 245 * structure at their correct offsets. 246 ******************************************************************************/ 247 #if CTX_INCLUDE_EL2_REGS 248 # define CTX_FPREGS_OFFSET (CTX_EL2_SYSREGS_OFFSET + CTX_EL2_SYSREGS_END) 249 #else 250 # define CTX_FPREGS_OFFSET (CTX_EL1_SYSREGS_OFFSET + CTX_EL1_SYSREGS_END) 251 #endif 252 #if CTX_INCLUDE_FPREGS 253 #define CTX_FP_Q0 U(0x0) 254 #define CTX_FP_Q1 U(0x10) 255 #define CTX_FP_Q2 U(0x20) 256 #define CTX_FP_Q3 U(0x30) 257 #define CTX_FP_Q4 U(0x40) 258 #define CTX_FP_Q5 U(0x50) 259 #define CTX_FP_Q6 U(0x60) 260 #define CTX_FP_Q7 U(0x70) 261 #define CTX_FP_Q8 U(0x80) 262 #define CTX_FP_Q9 U(0x90) 263 #define CTX_FP_Q10 U(0xa0) 264 #define CTX_FP_Q11 U(0xb0) 265 #define CTX_FP_Q12 U(0xc0) 266 #define CTX_FP_Q13 U(0xd0) 267 #define CTX_FP_Q14 U(0xe0) 268 #define CTX_FP_Q15 U(0xf0) 269 #define CTX_FP_Q16 U(0x100) 270 #define CTX_FP_Q17 U(0x110) 271 #define CTX_FP_Q18 U(0x120) 272 #define CTX_FP_Q19 U(0x130) 273 #define CTX_FP_Q20 U(0x140) 274 #define CTX_FP_Q21 U(0x150) 275 #define CTX_FP_Q22 U(0x160) 276 #define CTX_FP_Q23 U(0x170) 277 #define CTX_FP_Q24 U(0x180) 278 #define CTX_FP_Q25 U(0x190) 279 #define CTX_FP_Q26 U(0x1a0) 280 #define CTX_FP_Q27 U(0x1b0) 281 #define CTX_FP_Q28 U(0x1c0) 282 #define CTX_FP_Q29 U(0x1d0) 283 #define CTX_FP_Q30 U(0x1e0) 284 #define CTX_FP_Q31 U(0x1f0) 285 #define CTX_FP_FPSR U(0x200) 286 #define CTX_FP_FPCR U(0x208) 287 #if CTX_INCLUDE_AARCH32_REGS 288 #define CTX_FP_FPEXC32_EL2 U(0x210) 289 #define CTX_FPREGS_END U(0x220) /* Align to the next 16 byte boundary */ 290 #else 291 #define CTX_FPREGS_END U(0x210) /* Align to the next 16 byte boundary */ 292 #endif 293 #else 294 #define CTX_FPREGS_END U(0) 295 #endif 296 297 /******************************************************************************* 298 * Registers related to CVE-2018-3639 299 ******************************************************************************/ 300 #define CTX_CVE_2018_3639_OFFSET (CTX_FPREGS_OFFSET + CTX_FPREGS_END) 301 #define CTX_CVE_2018_3639_DISABLE U(0) 302 #define CTX_CVE_2018_3639_END U(0x10) /* Align to the next 16 byte boundary */ 303 304 /******************************************************************************* 305 * Registers related to ARMv8.3-PAuth. 306 ******************************************************************************/ 307 #define CTX_PAUTH_REGS_OFFSET (CTX_CVE_2018_3639_OFFSET + CTX_CVE_2018_3639_END) 308 #if CTX_INCLUDE_PAUTH_REGS 309 #define CTX_PACIAKEY_LO U(0x0) 310 #define CTX_PACIAKEY_HI U(0x8) 311 #define CTX_PACIBKEY_LO U(0x10) 312 #define CTX_PACIBKEY_HI U(0x18) 313 #define CTX_PACDAKEY_LO U(0x20) 314 #define CTX_PACDAKEY_HI U(0x28) 315 #define CTX_PACDBKEY_LO U(0x30) 316 #define CTX_PACDBKEY_HI U(0x38) 317 #define CTX_PACGAKEY_LO U(0x40) 318 #define CTX_PACGAKEY_HI U(0x48) 319 #define CTX_PAUTH_REGS_END U(0x50) /* Align to the next 16 byte boundary */ 320 #else 321 #define CTX_PAUTH_REGS_END U(0) 322 #endif /* CTX_INCLUDE_PAUTH_REGS */ 323 324 #ifndef __ASSEMBLER__ 325 326 #include <stdint.h> 327 328 #include <lib/cassert.h> 329 330 /* 331 * Common constants to help define the 'cpu_context' structure and its 332 * members below. 333 */ 334 #define DWORD_SHIFT U(3) 335 #define DEFINE_REG_STRUCT(name, num_regs) \ 336 typedef struct name { \ 337 uint64_t ctx_regs[num_regs]; \ 338 } __aligned(16) name##_t 339 340 /* Constants to determine the size of individual context structures */ 341 #define CTX_GPREG_ALL (CTX_GPREGS_END >> DWORD_SHIFT) 342 #define CTX_EL1_SYSREGS_ALL (CTX_EL1_SYSREGS_END >> DWORD_SHIFT) 343 #if CTX_INCLUDE_EL2_REGS 344 # define CTX_EL2_SYSREGS_ALL (CTX_EL2_SYSREGS_END >> DWORD_SHIFT) 345 #endif 346 #if CTX_INCLUDE_FPREGS 347 # define CTX_FPREG_ALL (CTX_FPREGS_END >> DWORD_SHIFT) 348 #endif 349 #define CTX_EL3STATE_ALL (CTX_EL3STATE_END >> DWORD_SHIFT) 350 #define CTX_CVE_2018_3639_ALL (CTX_CVE_2018_3639_END >> DWORD_SHIFT) 351 #if CTX_INCLUDE_PAUTH_REGS 352 # define CTX_PAUTH_REGS_ALL (CTX_PAUTH_REGS_END >> DWORD_SHIFT) 353 #endif 354 355 /* 356 * AArch64 general purpose register context structure. Usually x0-x18, 357 * lr are saved as the compiler is expected to preserve the remaining 358 * callee saved registers if used by the C runtime and the assembler 359 * does not touch the remaining. But in case of world switch during 360 * exception handling, we need to save the callee registers too. 361 */ 362 DEFINE_REG_STRUCT(gp_regs, CTX_GPREG_ALL); 363 364 /* 365 * AArch64 EL1 system register context structure for preserving the 366 * architectural state during world switches. 367 */ 368 DEFINE_REG_STRUCT(el1_sysregs, CTX_EL1_SYSREGS_ALL); 369 370 371 /* 372 * AArch64 EL2 system register context structure for preserving the 373 * architectural state during world switches. 374 */ 375 #if CTX_INCLUDE_EL2_REGS 376 DEFINE_REG_STRUCT(el2_sysregs, CTX_EL2_SYSREGS_ALL); 377 #endif 378 379 /* 380 * AArch64 floating point register context structure for preserving 381 * the floating point state during switches from one security state to 382 * another. 383 */ 384 #if CTX_INCLUDE_FPREGS 385 DEFINE_REG_STRUCT(fp_regs, CTX_FPREG_ALL); 386 #endif 387 388 /* 389 * Miscellaneous registers used by EL3 firmware to maintain its state 390 * across exception entries and exits 391 */ 392 DEFINE_REG_STRUCT(el3_state, CTX_EL3STATE_ALL); 393 394 /* Function pointer used by CVE-2018-3639 dynamic mitigation */ 395 DEFINE_REG_STRUCT(cve_2018_3639, CTX_CVE_2018_3639_ALL); 396 397 /* Registers associated to ARMv8.3-PAuth */ 398 #if CTX_INCLUDE_PAUTH_REGS 399 DEFINE_REG_STRUCT(pauth, CTX_PAUTH_REGS_ALL); 400 #endif 401 402 /* 403 * Macros to access members of any of the above structures using their 404 * offsets 405 */ 406 #define read_ctx_reg(ctx, offset) ((ctx)->ctx_regs[(offset) >> DWORD_SHIFT]) 407 #define write_ctx_reg(ctx, offset, val) (((ctx)->ctx_regs[(offset) >> DWORD_SHIFT]) \ 408 = (uint64_t) (val)) 409 410 /* 411 * Top-level context structure which is used by EL3 firmware to preserve 412 * the state of a core at the next lower EL in a given security state and 413 * save enough EL3 meta data to be able to return to that EL and security 414 * state. The context management library will be used to ensure that 415 * SP_EL3 always points to an instance of this structure at exception 416 * entry and exit. 417 */ 418 typedef struct cpu_context { 419 gp_regs_t gpregs_ctx; 420 el3_state_t el3state_ctx; 421 el1_sysregs_t el1_sysregs_ctx; 422 #if CTX_INCLUDE_EL2_REGS 423 el2_sysregs_t el2_sysregs_ctx; 424 #endif 425 #if CTX_INCLUDE_FPREGS 426 fp_regs_t fpregs_ctx; 427 #endif 428 cve_2018_3639_t cve_2018_3639_ctx; 429 #if CTX_INCLUDE_PAUTH_REGS 430 pauth_t pauth_ctx; 431 #endif 432 } cpu_context_t; 433 434 /* Macros to access members of the 'cpu_context_t' structure */ 435 #define get_el3state_ctx(h) (&((cpu_context_t *) h)->el3state_ctx) 436 #if CTX_INCLUDE_FPREGS 437 # define get_fpregs_ctx(h) (&((cpu_context_t *) h)->fpregs_ctx) 438 #endif 439 #define get_el1_sysregs_ctx(h) (&((cpu_context_t *) h)->el1_sysregs_ctx) 440 #if CTX_INCLUDE_EL2_REGS 441 # define get_el2_sysregs_ctx(h) (&((cpu_context_t *) h)->el2_sysregs_ctx) 442 #endif 443 #define get_gpregs_ctx(h) (&((cpu_context_t *) h)->gpregs_ctx) 444 #define get_cve_2018_3639_ctx(h) (&((cpu_context_t *) h)->cve_2018_3639_ctx) 445 #if CTX_INCLUDE_PAUTH_REGS 446 # define get_pauth_ctx(h) (&((cpu_context_t *) h)->pauth_ctx) 447 #endif 448 449 /* 450 * Compile time assertions related to the 'cpu_context' structure to 451 * ensure that the assembler and the compiler view of the offsets of 452 * the structure members is the same. 453 */ 454 CASSERT(CTX_GPREGS_OFFSET == __builtin_offsetof(cpu_context_t, gpregs_ctx), 455 assert_core_context_gp_offset_mismatch); 456 CASSERT(CTX_EL1_SYSREGS_OFFSET == __builtin_offsetof(cpu_context_t, el1_sysregs_ctx), 457 assert_core_context_el1_sys_offset_mismatch); 458 #if CTX_INCLUDE_EL2_REGS 459 CASSERT(CTX_EL2_SYSREGS_OFFSET == __builtin_offsetof(cpu_context_t, el2_sysregs_ctx), 460 assert_core_context_el2_sys_offset_mismatch); 461 #endif 462 #if CTX_INCLUDE_FPREGS 463 CASSERT(CTX_FPREGS_OFFSET == __builtin_offsetof(cpu_context_t, fpregs_ctx), 464 assert_core_context_fp_offset_mismatch); 465 #endif 466 CASSERT(CTX_EL3STATE_OFFSET == __builtin_offsetof(cpu_context_t, el3state_ctx), 467 assert_core_context_el3state_offset_mismatch); 468 CASSERT(CTX_CVE_2018_3639_OFFSET == __builtin_offsetof(cpu_context_t, cve_2018_3639_ctx), 469 assert_core_context_cve_2018_3639_offset_mismatch); 470 #if CTX_INCLUDE_PAUTH_REGS 471 CASSERT(CTX_PAUTH_REGS_OFFSET == __builtin_offsetof(cpu_context_t, pauth_ctx), 472 assert_core_context_pauth_offset_mismatch); 473 #endif 474 475 /* 476 * Helper macro to set the general purpose registers that correspond to 477 * parameters in an aapcs_64 call i.e. x0-x7 478 */ 479 #define set_aapcs_args0(ctx, x0) do { \ 480 write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X0, x0); \ 481 } while (0) 482 #define set_aapcs_args1(ctx, x0, x1) do { \ 483 write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X1, x1); \ 484 set_aapcs_args0(ctx, x0); \ 485 } while (0) 486 #define set_aapcs_args2(ctx, x0, x1, x2) do { \ 487 write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X2, x2); \ 488 set_aapcs_args1(ctx, x0, x1); \ 489 } while (0) 490 #define set_aapcs_args3(ctx, x0, x1, x2, x3) do { \ 491 write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X3, x3); \ 492 set_aapcs_args2(ctx, x0, x1, x2); \ 493 } while (0) 494 #define set_aapcs_args4(ctx, x0, x1, x2, x3, x4) do { \ 495 write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X4, x4); \ 496 set_aapcs_args3(ctx, x0, x1, x2, x3); \ 497 } while (0) 498 #define set_aapcs_args5(ctx, x0, x1, x2, x3, x4, x5) do { \ 499 write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X5, x5); \ 500 set_aapcs_args4(ctx, x0, x1, x2, x3, x4); \ 501 } while (0) 502 #define set_aapcs_args6(ctx, x0, x1, x2, x3, x4, x5, x6) do { \ 503 write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X6, x6); \ 504 set_aapcs_args5(ctx, x0, x1, x2, x3, x4, x5); \ 505 } while (0) 506 #define set_aapcs_args7(ctx, x0, x1, x2, x3, x4, x5, x6, x7) do { \ 507 write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X7, x7); \ 508 set_aapcs_args6(ctx, x0, x1, x2, x3, x4, x5, x6); \ 509 } while (0) 510 511 /******************************************************************************* 512 * Function prototypes 513 ******************************************************************************/ 514 void el1_sysregs_context_save(el1_sysregs_t *regs); 515 void el1_sysregs_context_restore(el1_sysregs_t *regs); 516 517 #if CTX_INCLUDE_EL2_REGS 518 void el2_sysregs_context_save_common(el2_sysregs_t *regs); 519 void el2_sysregs_context_restore_common(el2_sysregs_t *regs); 520 #if CTX_INCLUDE_MTE_REGS 521 void el2_sysregs_context_save_mte(el2_sysregs_t *regs); 522 void el2_sysregs_context_restore_mte(el2_sysregs_t *regs); 523 #endif /* CTX_INCLUDE_MTE_REGS */ 524 #if RAS_EXTENSION 525 void el2_sysregs_context_save_ras(el2_sysregs_t *regs); 526 void el2_sysregs_context_restore_ras(el2_sysregs_t *regs); 527 #endif /* RAS_EXTENSION */ 528 #endif /* CTX_INCLUDE_EL2_REGS */ 529 530 #if CTX_INCLUDE_FPREGS 531 void fpregs_context_save(fp_regs_t *regs); 532 void fpregs_context_restore(fp_regs_t *regs); 533 #endif 534 535 #endif /* __ASSEMBLER__ */ 536 537 #endif /* CONTEXT_H */ 538