Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /* asmmacro.h: Assembler macros.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #ifndef _SPARC_ASMMACRO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #define _SPARC_ASMMACRO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) /* All trap entry points _must_ begin with this macro or else you
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * lose.  It makes sure the kernel has a proper window so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * c-code can be called.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define SAVE_ALL_HEAD \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	sethi	%hi(trap_setup), %l4; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	jmpl	%l4 + %lo(trap_setup), %l6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define SAVE_ALL \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	SAVE_ALL_HEAD \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	 nop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* All traps low-level code here must end with this macro. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define RESTORE_ALL b ret_trap_entry; clr %l6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /* Support for run-time patching of single instructions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  * This is used to handle the differences in the ASI for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  * MMUREGS for LEON and SUN.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  * Sample:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)  * LEON_PI(lda [%g0] ASI_LEON_MMUREGS, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)  * SUN_PI_(lda [%g0] ASI_M_MMUREGS, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)  * PI == Patch Instruction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)  * For LEON we will use the first variant,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)  * and for all other we will use the SUN variant.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)  * The order is important.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define LEON_PI(...)				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 662:	__VA_ARGS__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define SUN_PI_(...)				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	.section .leon_1insn_patch, "ax";	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	.word 662b;				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	__VA_ARGS__;				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	.previous
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #endif /* !(_SPARC_ASMMACRO_H) */