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- /* SPDX-License-Identifier: GPL-2.0 */
- /* asmmacro.h: Assembler macros.
- *
- * Copyright (C) 1996 David S. Miller ([email protected])
- */
- #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) */
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