/* 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) */