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/* SPDX-License-Identifier: GPL-2.0 */
/*
* The actual FRED entry points.
*/
#include <asm/fred.h>
#include "calling.h"
.code64
.section .noinstr.text, "ax"
.macro FRED_ENTER
UNWIND_HINT_END_OF_STACK
ENDBR
PUSH_AND_CLEAR_REGS
movq %rsp, %rdi /* %rdi -> pt_regs */
.endm
.macro FRED_EXIT
UNWIND_HINT_REGS
POP_REGS
.endm
/*
* The new RIP value that FRED event delivery establishes is
* IA32_FRED_CONFIG & ~FFFH for events that occur in ring 3.
* Thus the FRED ring 3 entry point must be 4K page aligned.
*/
.align 4096
SYM_CODE_START_NOALIGN(asm_fred_entrypoint_user)
FRED_ENTER
call fred_entry_from_user
FRED_EXIT
ERETU
SYM_CODE_END(asm_fred_entrypoint_user)
/*
* The new RIP value that FRED event delivery establishes is
* (IA32_FRED_CONFIG & ~FFFH) + 256 for events that occur in
* ring 0, i.e., asm_fred_entrypoint_user + 256.
*/
.org asm_fred_entrypoint_user + 256, 0xcc
SYM_CODE_START_NOALIGN(asm_fred_entrypoint_kernel)
FRED_ENTER
call fred_entry_from_kernel
FRED_EXIT
ERETS
SYM_CODE_END(asm_fred_entrypoint_kernel)
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