blob: 512d196713b1d2138b89b416f5851bdee64d8498 [file] [log] [blame]
/*
* Copyright (c) 2013-2021, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef CONTEXT_H
#define CONTEXT_H
#include <lib/utils_def.h>
/*******************************************************************************
* Constants that allow assembler code to access members of and the 'gp_regs'
* structure at their correct offsets.
******************************************************************************/
#define CTX_GPREGS_OFFSET U(0x0)
#define CTX_GPREG_X0 U(0x0)
#define CTX_GPREG_X1 U(0x8)
#define CTX_GPREG_X2 U(0x10)
#define CTX_GPREG_X3 U(0x18)
#define CTX_GPREG_X4 U(0x20)
#define CTX_GPREG_X5 U(0x28)
#define CTX_GPREG_X6 U(0x30)
#define CTX_GPREG_X7 U(0x38)
#define CTX_GPREG_X8 U(0x40)
#define CTX_GPREG_X9 U(0x48)
#define CTX_GPREG_X10 U(0x50)
#define CTX_GPREG_X11 U(0x58)
#define CTX_GPREG_X12 U(0x60)
#define CTX_GPREG_X13 U(0x68)
#define CTX_GPREG_X14 U(0x70)
#define CTX_GPREG_X15 U(0x78)
#define CTX_GPREG_X16 U(0x80)
#define CTX_GPREG_X17 U(0x88)
#define CTX_GPREG_X18 U(0x90)
#define CTX_GPREG_X19 U(0x98)
#define CTX_GPREG_X20 U(0xa0)
#define CTX_GPREG_X21 U(0xa8)
#define CTX_GPREG_X22 U(0xb0)
#define CTX_GPREG_X23 U(0xb8)
#define CTX_GPREG_X24 U(0xc0)
#define CTX_GPREG_X25 U(0xc8)
#define CTX_GPREG_X26 U(0xd0)
#define CTX_GPREG_X27 U(0xd8)
#define CTX_GPREG_X28 U(0xe0)
#define CTX_GPREG_X29 U(0xe8)
#define CTX_GPREG_LR U(0xf0)
#define CTX_GPREG_SP_EL0 U(0xf8)
#define CTX_GPREGS_END U(0x100)
/*******************************************************************************
* Constants that allow assembler code to access members of and the 'el3_state'
* structure at their correct offsets. Note that some of the registers are only
* 32-bits wide but are stored as 64-bit values for convenience
******************************************************************************/
#define CTX_EL3STATE_OFFSET (CTX_GPREGS_OFFSET + CTX_GPREGS_END)
#define CTX_SCR_EL3 U(0x0)
#define CTX_ESR_EL3 U(0x8)
#define CTX_RUNTIME_SP U(0x10)
#define CTX_SPSR_EL3 U(0x18)
#define CTX_ELR_EL3 U(0x20)
#define CTX_PMCR_EL0 U(0x28)
#define CTX_IS_IN_EL3 U(0x30)
#define CTX_CPTR_EL3 U(0x38)
#define CTX_ZCR_EL3 U(0x40)
#define CTX_EL3STATE_END U(0x50) /* Align to the next 16 byte boundary */
/*******************************************************************************
* Constants that allow assembler code to access members of and the
* 'el1_sys_regs' structure at their correct offsets. Note that some of the
* registers are only 32-bits wide but are stored as 64-bit values for
* convenience
******************************************************************************/
#define CTX_EL1_SYSREGS_OFFSET (CTX_EL3STATE_OFFSET + CTX_EL3STATE_END)
#define CTX_SPSR_EL1 U(0x0)
#define CTX_ELR_EL1 U(0x8)
#define CTX_SCTLR_EL1 U(0x10)
#define CTX_TCR_EL1 U(0x18)
#define CTX_CPACR_EL1 U(0x20)
#define CTX_CSSELR_EL1 U(0x28)
#define CTX_SP_EL1 U(0x30)
#define CTX_ESR_EL1 U(0x38)
#define CTX_TTBR0_EL1 U(0x40)
#define CTX_TTBR1_EL1 U(0x48)
#define CTX_MAIR_EL1 U(0x50)
#define CTX_AMAIR_EL1 U(0x58)
#define CTX_ACTLR_EL1 U(0x60)
#define CTX_TPIDR_EL1 U(0x68)
#define CTX_TPIDR_EL0 U(0x70)
#define CTX_TPIDRRO_EL0 U(0x78)
#define CTX_PAR_EL1 U(0x80)
#define CTX_FAR_EL1 U(0x88)
#define CTX_AFSR0_EL1 U(0x90)
#define CTX_AFSR1_EL1 U(0x98)
#define CTX_CONTEXTIDR_EL1 U(0xa0)
#define CTX_VBAR_EL1 U(0xa8)
/*
* If the platform is AArch64-only, there is no need to save and restore these
* AArch32 registers.
*/
#if CTX_INCLUDE_AARCH32_REGS
#define CTX_SPSR_ABT U(0xb0) /* Align to the next 16 byte boundary */
#define CTX_SPSR_UND U(0xb8)
#define CTX_SPSR_IRQ U(0xc0)
#define CTX_SPSR_FIQ U(0xc8)
#define CTX_DACR32_EL2 U(0xd0)
#define CTX_IFSR32_EL2 U(0xd8)
#define CTX_AARCH32_END U(0xe0) /* Align to the next 16 byte boundary */
#else
#define CTX_AARCH32_END U(0xb0) /* Align to the next 16 byte boundary */
#endif /* CTX_INCLUDE_AARCH32_REGS */
/*
* If the timer registers aren't saved and restored, we don't have to reserve
* space for them in the context
*/
#if NS_TIMER_SWITCH
#define CTX_CNTP_CTL_EL0 (CTX_AARCH32_END + U(0x0))
#define CTX_CNTP_CVAL_EL0 (CTX_AARCH32_END + U(0x8))
#define CTX_CNTV_CTL_EL0 (CTX_AARCH32_END + U(0x10))
#define CTX_CNTV_CVAL_EL0 (CTX_AARCH32_END + U(0x18))
#define CTX_CNTKCTL_EL1 (CTX_AARCH32_END + U(0x20))
#define CTX_TIMER_SYSREGS_END (CTX_AARCH32_END + U(0x30)) /* Align to the next 16 byte boundary */
#else
#define CTX_TIMER_SYSREGS_END CTX_AARCH32_END
#endif /* NS_TIMER_SWITCH */
#if CTX_INCLUDE_MTE_REGS
#define CTX_TFSRE0_EL1 (CTX_TIMER_SYSREGS_END + U(0x0))
#define CTX_TFSR_EL1 (CTX_TIMER_SYSREGS_END + U(0x8))
#define CTX_RGSR_EL1 (CTX_TIMER_SYSREGS_END + U(0x10))
#define CTX_GCR_EL1 (CTX_TIMER_SYSREGS_END + U(0x18))
/* Align to the next 16 byte boundary */
#define CTX_MTE_REGS_END (CTX_TIMER_SYSREGS_END + U(0x20))
#else
#define CTX_MTE_REGS_END CTX_TIMER_SYSREGS_END
#endif /* CTX_INCLUDE_MTE_REGS */
/*
* End of system registers.
*/
#define CTX_EL1_SYSREGS_END CTX_MTE_REGS_END
/*
* EL2 register set
*/
#if CTX_INCLUDE_EL2_REGS
/* For later discussion
* ICH_AP0R<n>_EL2
* ICH_AP1R<n>_EL2
* AMEVCNTVOFF0<n>_EL2
* AMEVCNTVOFF1<n>_EL2
* ICH_LR<n>_EL2
*/
#define CTX_EL2_SYSREGS_OFFSET (CTX_EL1_SYSREGS_OFFSET + CTX_EL1_SYSREGS_END)
#define CTX_ACTLR_EL2 U(0x0)
#define CTX_AFSR0_EL2 U(0x8)
#define CTX_AFSR1_EL2 U(0x10)
#define CTX_AMAIR_EL2 U(0x18)
#define CTX_CNTHCTL_EL2 U(0x20)
#define CTX_CNTVOFF_EL2 U(0x28)
#define CTX_CPTR_EL2 U(0x30)
#define CTX_DBGVCR32_EL2 U(0x38)
#define CTX_ELR_EL2 U(0x40)
#define CTX_ESR_EL2 U(0x48)
#define CTX_FAR_EL2 U(0x50)
#define CTX_HACR_EL2 U(0x58)
#define CTX_HCR_EL2 U(0x60)
#define CTX_HPFAR_EL2 U(0x68)
#define CTX_HSTR_EL2 U(0x70)
#define CTX_ICC_SRE_EL2 U(0x78)
#define CTX_ICH_HCR_EL2 U(0x80)
#define CTX_ICH_VMCR_EL2 U(0x88)
#define CTX_MAIR_EL2 U(0x90)
#define CTX_MDCR_EL2 U(0x98)
#define CTX_PMSCR_EL2 U(0xa0)
#define CTX_SCTLR_EL2 U(0xa8)
#define CTX_SPSR_EL2 U(0xb0)
#define CTX_SP_EL2 U(0xb8)
#define CTX_TCR_EL2 U(0xc0)
#define CTX_TPIDR_EL2 U(0xc8)
#define CTX_TTBR0_EL2 U(0xd0)
#define CTX_VBAR_EL2 U(0xd8)
#define CTX_VMPIDR_EL2 U(0xe0)
#define CTX_VPIDR_EL2 U(0xe8)
#define CTX_VTCR_EL2 U(0xf0)
#define CTX_VTTBR_EL2 U(0xf8)
// Only if MTE registers in use
#define CTX_TFSR_EL2 U(0x100)
// Only if ENABLE_MPAM_FOR_LOWER_ELS==1
#define CTX_MPAM2_EL2 U(0x108)
#define CTX_MPAMHCR_EL2 U(0x110)
#define CTX_MPAMVPM0_EL2 U(0x118)
#define CTX_MPAMVPM1_EL2 U(0x120)
#define CTX_MPAMVPM2_EL2 U(0x128)
#define CTX_MPAMVPM3_EL2 U(0x130)
#define CTX_MPAMVPM4_EL2 U(0x138)
#define CTX_MPAMVPM5_EL2 U(0x140)
#define CTX_MPAMVPM6_EL2 U(0x148)
#define CTX_MPAMVPM7_EL2 U(0x150)
#define CTX_MPAMVPMV_EL2 U(0x158)
// Starting with Armv8.6
#define CTX_HDFGRTR_EL2 U(0x160)
#define CTX_HAFGRTR_EL2 U(0x168)
#define CTX_HDFGWTR_EL2 U(0x170)
#define CTX_HFGITR_EL2 U(0x178)
#define CTX_HFGRTR_EL2 U(0x180)
#define CTX_HFGWTR_EL2 U(0x188)
#define CTX_CNTPOFF_EL2 U(0x190)
// Starting with Armv8.4
#define CTX_CONTEXTIDR_EL2 U(0x198)
#define CTX_SDER32_EL2 U(0x1a0)
#define CTX_TTBR1_EL2 U(0x1a8)
#define CTX_VDISR_EL2 U(0x1b0)
#define CTX_VNCR_EL2 U(0x1b8)
#define CTX_VSESR_EL2 U(0x1c0)
#define CTX_VSTCR_EL2 U(0x1c8)
#define CTX_VSTTBR_EL2 U(0x1d0)
#define CTX_TRFCR_EL2 U(0x1d8)
// Starting with Armv8.5
#define CTX_SCXTNUM_EL2 U(0x1e0)
// Register for FEAT_HCX
#define CTX_HCRX_EL2 U(0x1e8)
/* Align to the next 16 byte boundary */
#define CTX_EL2_SYSREGS_END U(0x1f0)
#endif /* CTX_INCLUDE_EL2_REGS */
/*******************************************************************************
* Constants that allow assembler code to access members of and the 'fp_regs'
* structure at their correct offsets.
******************************************************************************/
#if CTX_INCLUDE_EL2_REGS
# define CTX_FPREGS_OFFSET (CTX_EL2_SYSREGS_OFFSET + CTX_EL2_SYSREGS_END)
#else
# define CTX_FPREGS_OFFSET (CTX_EL1_SYSREGS_OFFSET + CTX_EL1_SYSREGS_END)
#endif
#if CTX_INCLUDE_FPREGS
#define CTX_FP_Q0 U(0x0)
#define CTX_FP_Q1 U(0x10)
#define CTX_FP_Q2 U(0x20)
#define CTX_FP_Q3 U(0x30)
#define CTX_FP_Q4 U(0x40)
#define CTX_FP_Q5 U(0x50)
#define CTX_FP_Q6 U(0x60)
#define CTX_FP_Q7 U(0x70)
#define CTX_FP_Q8 U(0x80)
#define CTX_FP_Q9 U(0x90)
#define CTX_FP_Q10 U(0xa0)
#define CTX_FP_Q11 U(0xb0)
#define CTX_FP_Q12 U(0xc0)
#define CTX_FP_Q13 U(0xd0)
#define CTX_FP_Q14 U(0xe0)
#define CTX_FP_Q15 U(0xf0)
#define CTX_FP_Q16 U(0x100)
#define CTX_FP_Q17 U(0x110)
#define CTX_FP_Q18 U(0x120)
#define CTX_FP_Q19 U(0x130)
#define CTX_FP_Q20 U(0x140)
#define CTX_FP_Q21 U(0x150)
#define CTX_FP_Q22 U(0x160)
#define CTX_FP_Q23 U(0x170)
#define CTX_FP_Q24 U(0x180)
#define CTX_FP_Q25 U(0x190)
#define CTX_FP_Q26 U(0x1a0)
#define CTX_FP_Q27 U(0x1b0)
#define CTX_FP_Q28 U(0x1c0)
#define CTX_FP_Q29 U(0x1d0)
#define CTX_FP_Q30 U(0x1e0)
#define CTX_FP_Q31 U(0x1f0)
#define CTX_FP_FPSR U(0x200)
#define CTX_FP_FPCR U(0x208)
#if CTX_INCLUDE_AARCH32_REGS
#define CTX_FP_FPEXC32_EL2 U(0x210)
#define CTX_FPREGS_END U(0x220) /* Align to the next 16 byte boundary */
#else
#define CTX_FPREGS_END U(0x210) /* Align to the next 16 byte boundary */
#endif
#else
#define CTX_FPREGS_END U(0)
#endif
/*******************************************************************************
* Registers related to CVE-2018-3639
******************************************************************************/
#define CTX_CVE_2018_3639_OFFSET (CTX_FPREGS_OFFSET + CTX_FPREGS_END)
#define CTX_CVE_2018_3639_DISABLE U(0)
#define CTX_CVE_2018_3639_END U(0x10) /* Align to the next 16 byte boundary */
/*******************************************************************************
* Registers related to ARMv8.3-PAuth.
******************************************************************************/
#define CTX_PAUTH_REGS_OFFSET (CTX_CVE_2018_3639_OFFSET + CTX_CVE_2018_3639_END)
#if CTX_INCLUDE_PAUTH_REGS
#define CTX_PACIAKEY_LO U(0x0)
#define CTX_PACIAKEY_HI U(0x8)
#define CTX_PACIBKEY_LO U(0x10)
#define CTX_PACIBKEY_HI U(0x18)
#define CTX_PACDAKEY_LO U(0x20)
#define CTX_PACDAKEY_HI U(0x28)
#define CTX_PACDBKEY_LO U(0x30)
#define CTX_PACDBKEY_HI U(0x38)
#define CTX_PACGAKEY_LO U(0x40)
#define CTX_PACGAKEY_HI U(0x48)
#define CTX_PAUTH_REGS_END U(0x50) /* Align to the next 16 byte boundary */
#else
#define CTX_PAUTH_REGS_END U(0)
#endif /* CTX_INCLUDE_PAUTH_REGS */
#ifndef __ASSEMBLER__
#include <stdint.h>
#include <lib/cassert.h>
/*
* Common constants to help define the 'cpu_context' structure and its
* members below.
*/
#define DWORD_SHIFT U(3)
#define DEFINE_REG_STRUCT(name, num_regs) \
typedef struct name { \
uint64_t ctx_regs[num_regs]; \
} __aligned(16) name##_t
/* Constants to determine the size of individual context structures */
#define CTX_GPREG_ALL (CTX_GPREGS_END >> DWORD_SHIFT)
#define CTX_EL1_SYSREGS_ALL (CTX_EL1_SYSREGS_END >> DWORD_SHIFT)
#if CTX_INCLUDE_EL2_REGS
# define CTX_EL2_SYSREGS_ALL (CTX_EL2_SYSREGS_END >> DWORD_SHIFT)
#endif
#if CTX_INCLUDE_FPREGS
# define CTX_FPREG_ALL (CTX_FPREGS_END >> DWORD_SHIFT)
#endif
#define CTX_EL3STATE_ALL (CTX_EL3STATE_END >> DWORD_SHIFT)
#define CTX_CVE_2018_3639_ALL (CTX_CVE_2018_3639_END >> DWORD_SHIFT)
#if CTX_INCLUDE_PAUTH_REGS
# define CTX_PAUTH_REGS_ALL (CTX_PAUTH_REGS_END >> DWORD_SHIFT)
#endif
/*
* AArch64 general purpose register context structure. Usually x0-x18,
* lr are saved as the compiler is expected to preserve the remaining
* callee saved registers if used by the C runtime and the assembler
* does not touch the remaining. But in case of world switch during
* exception handling, we need to save the callee registers too.
*/
DEFINE_REG_STRUCT(gp_regs, CTX_GPREG_ALL);
/*
* AArch64 EL1 system register context structure for preserving the
* architectural state during world switches.
*/
DEFINE_REG_STRUCT(el1_sysregs, CTX_EL1_SYSREGS_ALL);
/*
* AArch64 EL2 system register context structure for preserving the
* architectural state during world switches.
*/
#if CTX_INCLUDE_EL2_REGS
DEFINE_REG_STRUCT(el2_sysregs, CTX_EL2_SYSREGS_ALL);
#endif
/*
* AArch64 floating point register context structure for preserving
* the floating point state during switches from one security state to
* another.
*/
#if CTX_INCLUDE_FPREGS
DEFINE_REG_STRUCT(fp_regs, CTX_FPREG_ALL);
#endif
/*
* Miscellaneous registers used by EL3 firmware to maintain its state
* across exception entries and exits
*/
DEFINE_REG_STRUCT(el3_state, CTX_EL3STATE_ALL);
/* Function pointer used by CVE-2018-3639 dynamic mitigation */
DEFINE_REG_STRUCT(cve_2018_3639, CTX_CVE_2018_3639_ALL);
/* Registers associated to ARMv8.3-PAuth */
#if CTX_INCLUDE_PAUTH_REGS
DEFINE_REG_STRUCT(pauth, CTX_PAUTH_REGS_ALL);
#endif
/*
* Macros to access members of any of the above structures using their
* offsets
*/
#define read_ctx_reg(ctx, offset) ((ctx)->ctx_regs[(offset) >> DWORD_SHIFT])
#define write_ctx_reg(ctx, offset, val) (((ctx)->ctx_regs[(offset) >> DWORD_SHIFT]) \
= (uint64_t) (val))
/*
* Top-level context structure which is used by EL3 firmware to preserve
* the state of a core at the next lower EL in a given security state and
* save enough EL3 meta data to be able to return to that EL and security
* state. The context management library will be used to ensure that
* SP_EL3 always points to an instance of this structure at exception
* entry and exit.
*/
typedef struct cpu_context {
gp_regs_t gpregs_ctx;
el3_state_t el3state_ctx;
el1_sysregs_t el1_sysregs_ctx;
#if CTX_INCLUDE_EL2_REGS
el2_sysregs_t el2_sysregs_ctx;
#endif
#if CTX_INCLUDE_FPREGS
fp_regs_t fpregs_ctx;
#endif
cve_2018_3639_t cve_2018_3639_ctx;
#if CTX_INCLUDE_PAUTH_REGS
pauth_t pauth_ctx;
#endif
} cpu_context_t;
/* Macros to access members of the 'cpu_context_t' structure */
#define get_el3state_ctx(h) (&((cpu_context_t *) h)->el3state_ctx)
#if CTX_INCLUDE_FPREGS
# define get_fpregs_ctx(h) (&((cpu_context_t *) h)->fpregs_ctx)
#endif
#define get_el1_sysregs_ctx(h) (&((cpu_context_t *) h)->el1_sysregs_ctx)
#if CTX_INCLUDE_EL2_REGS
# define get_el2_sysregs_ctx(h) (&((cpu_context_t *) h)->el2_sysregs_ctx)
#endif
#define get_gpregs_ctx(h) (&((cpu_context_t *) h)->gpregs_ctx)
#define get_cve_2018_3639_ctx(h) (&((cpu_context_t *) h)->cve_2018_3639_ctx)
#if CTX_INCLUDE_PAUTH_REGS
# define get_pauth_ctx(h) (&((cpu_context_t *) h)->pauth_ctx)
#endif
/*
* Compile time assertions related to the 'cpu_context' structure to
* ensure that the assembler and the compiler view of the offsets of
* the structure members is the same.
*/
CASSERT(CTX_GPREGS_OFFSET == __builtin_offsetof(cpu_context_t, gpregs_ctx), \
assert_core_context_gp_offset_mismatch);
CASSERT(CTX_EL1_SYSREGS_OFFSET == __builtin_offsetof(cpu_context_t, el1_sysregs_ctx), \
assert_core_context_el1_sys_offset_mismatch);
#if CTX_INCLUDE_EL2_REGS
CASSERT(CTX_EL2_SYSREGS_OFFSET == __builtin_offsetof(cpu_context_t, el2_sysregs_ctx), \
assert_core_context_el2_sys_offset_mismatch);
#endif
#if CTX_INCLUDE_FPREGS
CASSERT(CTX_FPREGS_OFFSET == __builtin_offsetof(cpu_context_t, fpregs_ctx), \
assert_core_context_fp_offset_mismatch);
#endif
CASSERT(CTX_EL3STATE_OFFSET == __builtin_offsetof(cpu_context_t, el3state_ctx), \
assert_core_context_el3state_offset_mismatch);
CASSERT(CTX_CVE_2018_3639_OFFSET == __builtin_offsetof(cpu_context_t, cve_2018_3639_ctx), \
assert_core_context_cve_2018_3639_offset_mismatch);
#if CTX_INCLUDE_PAUTH_REGS
CASSERT(CTX_PAUTH_REGS_OFFSET == __builtin_offsetof(cpu_context_t, pauth_ctx), \
assert_core_context_pauth_offset_mismatch);
#endif
/*
* Helper macro to set the general purpose registers that correspond to
* parameters in an aapcs_64 call i.e. x0-x7
*/
#define set_aapcs_args0(ctx, x0) do { \
write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X0, x0); \
} while (0)
#define set_aapcs_args1(ctx, x0, x1) do { \
write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X1, x1); \
set_aapcs_args0(ctx, x0); \
} while (0)
#define set_aapcs_args2(ctx, x0, x1, x2) do { \
write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X2, x2); \
set_aapcs_args1(ctx, x0, x1); \
} while (0)
#define set_aapcs_args3(ctx, x0, x1, x2, x3) do { \
write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X3, x3); \
set_aapcs_args2(ctx, x0, x1, x2); \
} while (0)
#define set_aapcs_args4(ctx, x0, x1, x2, x3, x4) do { \
write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X4, x4); \
set_aapcs_args3(ctx, x0, x1, x2, x3); \
} while (0)
#define set_aapcs_args5(ctx, x0, x1, x2, x3, x4, x5) do { \
write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X5, x5); \
set_aapcs_args4(ctx, x0, x1, x2, x3, x4); \
} while (0)
#define set_aapcs_args6(ctx, x0, x1, x2, x3, x4, x5, x6) do { \
write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X6, x6); \
set_aapcs_args5(ctx, x0, x1, x2, x3, x4, x5); \
} while (0)
#define set_aapcs_args7(ctx, x0, x1, x2, x3, x4, x5, x6, x7) do { \
write_ctx_reg(get_gpregs_ctx(ctx), CTX_GPREG_X7, x7); \
set_aapcs_args6(ctx, x0, x1, x2, x3, x4, x5, x6); \
} while (0)
/*******************************************************************************
* Function prototypes
******************************************************************************/
void el1_sysregs_context_save(el1_sysregs_t *regs);
void el1_sysregs_context_restore(el1_sysregs_t *regs);
#if CTX_INCLUDE_EL2_REGS
void el2_sysregs_context_save(el2_sysregs_t *regs);
void el2_sysregs_context_restore(el2_sysregs_t *regs);
#endif
#if CTX_INCLUDE_FPREGS
void fpregs_context_save(fp_regs_t *regs);
void fpregs_context_restore(fp_regs_t *regs);
#endif
#endif /* __ASSEMBLER__ */
#endif /* CONTEXT_H */