1 /* SPDX-License-Identifier: GPL-2.0 */ 1 2 #ifndef __SPARC_HEAD_H 3 #define __SPARC_HEAD_H 4 5 #define KERNBASE 0xf0000000 /* First a 6 7 #define WRITE_PAUSE nop; nop; nop; /* Hav 8 9 /* Here are some trap goodies */ 10 11 /* Generic trap entry. */ 12 #define TRAP_ENTRY(type, label) \ 13 rd %psr, %l0; b label; rd %wim, %l3; n 14 15 /* Data/text faults */ 16 #define SRMMU_TFAULT rd %psr, %l0; rd %wim, %l 17 #define SRMMU_DFAULT rd %psr, %l0; rd %wim, %l 18 19 /* This is for traps we should NEVER get. */ 20 #define BAD_TRAP(num) \ 21 rd %psr, %l0; mov num, %l7; b bad_trap 22 23 /* This is for traps when we want just skip th 24 #define SKIP_TRAP(type, name) \ 25 jmpl %l2, %g0; rett %l2 + 4; nop; nop; 26 27 /* Notice that for the system calls we pull a 28 * different pointer to the system call vector 29 * the same generic system call low-level entr 30 * entry sequences are also HyperSparc pipelin 31 */ 32 33 /* Software trap for Linux system calls. */ 34 #define LINUX_SYSCALL_TRAP \ 35 sethi %hi(sys_call_table), %l7; \ 36 or %l7, %lo(sys_call_table), %l7; \ 37 b linux_sparc_syscall; \ 38 rd %psr, %l0; 39 40 #define BREAKPOINT_TRAP \ 41 b breakpoint_trap; \ 42 rd %psr,%l0; \ 43 nop; \ 44 nop; 45 46 #ifdef CONFIG_KGDB 47 #define KGDB_TRAP(num) \ 48 mov num, %l7; \ 49 b kgdb_trap_low; \ 50 rd %psr,%l0; \ 51 nop; 52 #else 53 #define KGDB_TRAP(num) \ 54 BAD_TRAP(num) 55 #endif 56 57 /* The Get Condition Codes software trap for u 58 #define GETCC_TRAP \ 59 b getcc_trap_handler; rd %psr, %l0; no 60 61 /* The Set Condition Codes software trap for u 62 #define SETCC_TRAP \ 63 b setcc_trap_handler; rd %psr, %l0; no 64 65 /* The Get PSR software trap for userland. */ 66 #define GETPSR_TRAP \ 67 rd %psr, %i0; jmp %l2; rett %l2 + 4; n 68 69 /* This is for hard interrupts from level 1-14 70 * gets handled with another macro. 71 */ 72 #define TRAP_ENTRY_INTERRUPT(int_level) \ 73 mov int_level, %l7; rd %psr, %l0; b re 74 75 /* Window overflows/underflows are special and 76 * efficient as possible here.... 77 */ 78 #define WINDOW_SPILL \ 79 rd %psr, %l0; rd %wim, %l3; b spill_wi 80 81 #define WINDOW_FILL \ 82 rd %psr, %l0; rd %wim, %l3; b fill_win 83 84 #endif /* __SPARC_HEAD_H */ 85
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.