1/* SPDX-License-Identifier: GPL-2.0 */
 2/* asmmacro.h: Assembler macros.
 3 *
 4 * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
 5 */
 6
 7#ifndef _SPARC_ASMMACRO_H
 8#define _SPARC_ASMMACRO_H
 9
10/* All trap entry points _must_ begin with this macro or else you
11 * lose.  It makes sure the kernel has a proper window so that
12 * c-code can be called.
13 */
14#define SAVE_ALL_HEAD \
15	sethi	%hi(trap_setup), %l4; \
16	jmpl	%l4 + %lo(trap_setup), %l6;
17#define SAVE_ALL \
18	SAVE_ALL_HEAD \
19	 nop;
20
21/* All traps low-level code here must end with this macro. */
22#define RESTORE_ALL b ret_trap_entry; clr %l6;
23
24/* Support for run-time patching of single instructions.
25 * This is used to handle the differences in the ASI for
26 * MMUREGS for LEON and SUN.
27 *
28 * Sample:
29 * LEON_PI(lda [%g0] ASI_LEON_MMUREGS, %o0
30 * SUN_PI_(lda [%g0] ASI_M_MMUREGS, %o0
31 * PI == Patch Instruction
32 *
33 * For LEON we will use the first variant,
34 * and for all other we will use the SUN variant.
35 * The order is important.
36 */
37#define LEON_PI(...)				\
38662:	__VA_ARGS__
39
40#define SUN_PI_(...)				\
41	.section .leon_1insn_patch, "ax";	\
42	.word 662b;				\
43	__VA_ARGS__;				\
44	.previous
45
46#endif /* !(_SPARC_ASMMACRO_H) */

 
 1/* asmmacro.h: Assembler macros.
 2 *
 3 * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
 4 */
 5
 6#ifndef _SPARC_ASMMACRO_H
 7#define _SPARC_ASMMACRO_H
 8
 9/* All trap entry points _must_ begin with this macro or else you
10 * lose.  It makes sure the kernel has a proper window so that
11 * c-code can be called.
12 */
13#define SAVE_ALL_HEAD \
14	sethi	%hi(trap_setup), %l4; \
15	jmpl	%l4 + %lo(trap_setup), %l6;
16#define SAVE_ALL \
17	SAVE_ALL_HEAD \
18	 nop;
19
20/* All traps low-level code here must end with this macro. */
21#define RESTORE_ALL b ret_trap_entry; clr %l6;
22
23/* Support for run-time patching of single instructions.
24 * This is used to handle the differences in the ASI for
25 * MMUREGS for LEON and SUN.
26 *
27 * Sample:
28 * LEON_PI(lda [%g0] ASI_LEON_MMUREGS, %o0
29 * SUN_PI_(lda [%g0] ASI_M_MMUREGS, %o0
30 * PI == Patch Instruction
31 *
32 * For LEON we will use the first variant,
33 * and for all other we will use the SUN variant.
34 * The order is important.
35 */
36#define LEON_PI(...)				\
37662:	__VA_ARGS__
38
39#define SUN_PI_(...)				\
40	.section .leon_1insn_patch, "ax";	\
41	.word 662b;				\
42	__VA_ARGS__;				\
43	.previous
44
45#endif /* !(_SPARC_ASMMACRO_H) */