/* SPDX-License-Identifier: GPL-2.0 */ /* asmmacro.h: Assembler macros. * * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu) */ #ifndef _SPARC_ASMMACRO_H #define _SPARC_ASMMACRO_H /* All trap entry points _must_ begin with this macro or else you * lose. It makes sure the kernel has a proper window so that * c-code can be called. */ #define SAVE_ALL_HEAD \ sethi %hi(trap_setup), %l4; \ jmpl %l4 + %lo(trap_setup), %l6; #define SAVE_ALL \ SAVE_ALL_HEAD \ nop; /* All traps low-level code here must end with this macro. */ #define RESTORE_ALL b ret_trap_entry; clr %l6; /* Support for run-time patching of single instructions. * This is used to handle the differences in the ASI for * MMUREGS for LEON and SUN. * * Sample: * LEON_PI(lda [%g0] ASI_LEON_MMUREGS, %o0 * SUN_PI_(lda [%g0] ASI_M_MMUREGS, %o0 * PI == Patch Instruction * * For LEON we will use the first variant, * and for all other we will use the SUN variant. * The order is important. */ #define LEON_PI(...) \ 662: __VA_ARGS__ #define SUN_PI_(...) \ .section .leon_1insn_patch, "ax"; \ .word 662b; \ __VA_ARGS__; \ .previous #endif /* !(_SPARC_ASMMACRO_H) */