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