1*b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2a439fe51SSam Ravnborg /* asmmacro.h: Assembler macros. 3a439fe51SSam Ravnborg * 4a439fe51SSam Ravnborg * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu) 5a439fe51SSam Ravnborg */ 6a439fe51SSam Ravnborg 7a439fe51SSam Ravnborg #ifndef _SPARC_ASMMACRO_H 8a439fe51SSam Ravnborg #define _SPARC_ASMMACRO_H 9a439fe51SSam Ravnborg 10a439fe51SSam Ravnborg /* All trap entry points _must_ begin with this macro or else you 11a439fe51SSam Ravnborg * lose. It makes sure the kernel has a proper window so that 12a439fe51SSam Ravnborg * c-code can be called. 13a439fe51SSam Ravnborg */ 14a439fe51SSam Ravnborg #define SAVE_ALL_HEAD \ 15a439fe51SSam Ravnborg sethi %hi(trap_setup), %l4; \ 16a439fe51SSam Ravnborg jmpl %l4 + %lo(trap_setup), %l6; 17a439fe51SSam Ravnborg #define SAVE_ALL \ 18a439fe51SSam Ravnborg SAVE_ALL_HEAD \ 19a439fe51SSam Ravnborg nop; 20a439fe51SSam Ravnborg 21a439fe51SSam Ravnborg /* All traps low-level code here must end with this macro. */ 22a439fe51SSam Ravnborg #define RESTORE_ALL b ret_trap_entry; clr %l6; 23a439fe51SSam Ravnborg 245b8b93c4SSam Ravnborg /* Support for run-time patching of single instructions. 255b8b93c4SSam Ravnborg * This is used to handle the differences in the ASI for 265b8b93c4SSam Ravnborg * MMUREGS for LEON and SUN. 275b8b93c4SSam Ravnborg * 285b8b93c4SSam Ravnborg * Sample: 295b8b93c4SSam Ravnborg * LEON_PI(lda [%g0] ASI_LEON_MMUREGS, %o0 305b8b93c4SSam Ravnborg * SUN_PI_(lda [%g0] ASI_M_MMUREGS, %o0 315b8b93c4SSam Ravnborg * PI == Patch Instruction 325b8b93c4SSam Ravnborg * 335b8b93c4SSam Ravnborg * For LEON we will use the first variant, 345b8b93c4SSam Ravnborg * and for all other we will use the SUN variant. 355b8b93c4SSam Ravnborg * The order is important. 365b8b93c4SSam Ravnborg */ 375b8b93c4SSam Ravnborg #define LEON_PI(...) \ 385b8b93c4SSam Ravnborg 662: __VA_ARGS__ 395b8b93c4SSam Ravnborg 405b8b93c4SSam Ravnborg #define SUN_PI_(...) \ 415b8b93c4SSam Ravnborg .section .leon_1insn_patch, "ax"; \ 425b8b93c4SSam Ravnborg .word 662b; \ 435b8b93c4SSam Ravnborg __VA_ARGS__; \ 445b8b93c4SSam Ravnborg .previous 455b8b93c4SSam Ravnborg 46a439fe51SSam Ravnborg #endif /* !(_SPARC_ASMMACRO_H) */ 47