Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _ASM_M32R_ASSEMBLER_H |
| 2 | #define _ASM_M32R_ASSEMBLER_H |
| 3 | |
| 4 | /* |
| 5 | * linux/asm-m32r/assembler.h |
| 6 | * |
| 7 | * Copyright (C) 2004 Hirokazu Takata <takata at linux-m32r.org> |
| 8 | * |
| 9 | * This file contains M32R architecture specific macro definitions. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/config.h> |
| 13 | |
| 14 | #ifndef __STR |
| 15 | #ifdef __ASSEMBLY__ |
| 16 | #define __STR(x) x |
| 17 | #else |
| 18 | #define __STR(x) #x |
| 19 | #endif |
| 20 | #endif /* __STR */ |
| 21 | |
| 22 | #ifdef CONFIG_SMP |
| 23 | #define M32R_LOCK __STR(lock) |
| 24 | #define M32R_UNLOCK __STR(unlock) |
| 25 | #else |
| 26 | #define M32R_LOCK __STR(ld) |
| 27 | #define M32R_UNLOCK __STR(st) |
| 28 | #endif |
| 29 | |
| 30 | #ifdef __ASSEMBLY__ |
| 31 | #undef ENTRY |
| 32 | #define ENTRY(name) ENTRY_M name |
| 33 | .macro ENTRY_M name |
| 34 | .global \name |
| 35 | ALIGN |
| 36 | \name: |
| 37 | .endm |
| 38 | #endif |
| 39 | |
| 40 | |
| 41 | /** |
| 42 | * LDIMM - load immediate value |
| 43 | * STI - enable interruption |
| 44 | * CLI - disable interruption |
| 45 | */ |
| 46 | |
| 47 | #ifdef __ASSEMBLY__ |
| 48 | |
| 49 | #define LDIMM(reg,x) LDIMM reg x |
| 50 | .macro LDIMM reg x |
| 51 | seth \reg, #high(\x) |
| 52 | or3 \reg, \reg, #low(\x) |
| 53 | .endm |
| 54 | |
Hirokazu Takata | 9287d95 | 2006-01-06 00:18:41 -0800 | [diff] [blame] | 55 | #if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #define STI(reg) STI_M reg |
| 57 | .macro STI_M reg |
| 58 | setpsw #0x40 -> nop |
| 59 | ; WORKAROUND: "-> nop" is a workaround for the M32700(TS1). |
| 60 | .endm |
| 61 | |
| 62 | #define CLI(reg) CLI_M reg |
| 63 | .macro CLI_M reg |
| 64 | clrpsw #0x40 -> nop |
| 65 | ; WORKAROUND: "-> nop" is a workaround for the M32700(TS1). |
| 66 | .endm |
Hirokazu Takata | 9287d95 | 2006-01-06 00:18:41 -0800 | [diff] [blame] | 67 | #else /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | #define STI(reg) STI_M reg |
| 69 | .macro STI_M reg |
| 70 | mvfc \reg, psw |
| 71 | or3 \reg, \reg, #0x0040 |
| 72 | mvtc \reg, psw |
| 73 | .endm |
| 74 | |
| 75 | #define CLI(reg) CLI_M reg |
| 76 | .macro CLI_M reg |
| 77 | mvfc \reg, psw |
| 78 | and3 \reg, \reg, #0xffbf |
| 79 | mvtc \reg, psw |
| 80 | .endm |
| 81 | #endif /* CONFIG_CHIP_M32102 */ |
| 82 | |
| 83 | .macro SAVE_ALL |
| 84 | push r0 ; orig_r0 |
| 85 | push sp ; spi (r15) |
| 86 | push lr ; r14 |
| 87 | push r13 |
| 88 | mvfc r13, cr3 ; spu |
| 89 | push r13 |
| 90 | mvfc r13, bbpc |
| 91 | push r13 |
| 92 | mvfc r13, bbpsw |
| 93 | push r13 |
| 94 | mvfc r13, bpc |
| 95 | push r13 |
| 96 | mvfc r13, psw |
| 97 | push r13 |
| 98 | #if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2) |
| 99 | mvfaclo r13, a1 |
| 100 | push r13 |
| 101 | mvfachi r13, a1 |
| 102 | push r13 |
| 103 | mvfaclo r13, a0 |
| 104 | push r13 |
| 105 | mvfachi r13, a0 |
| 106 | push r13 |
| 107 | #elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R) |
| 108 | mvfaclo r13 |
| 109 | push r13 |
| 110 | mvfachi r13 |
| 111 | push r13 |
Hirokazu Takata | 8e8ff02 | 2006-04-18 22:21:20 -0700 | [diff] [blame] | 112 | ldi r13, #0 |
| 113 | push r13 ; dummy push acc1h |
| 114 | push r13 ; dummy push acc1l |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | #else |
| 116 | #error unknown isa configuration |
| 117 | #endif |
| 118 | ldi r13, #-1 |
| 119 | push r13 ; syscall_nr (default: -1) |
| 120 | push r12 |
| 121 | push r11 |
| 122 | push r10 |
| 123 | push r9 |
| 124 | push r8 |
| 125 | push r7 |
| 126 | push r3 |
| 127 | push r2 |
| 128 | push r1 |
| 129 | push r0 |
| 130 | addi sp, #-4 ; room for implicit pt_regs parameter |
| 131 | push r6 |
| 132 | push r5 |
| 133 | push r4 |
| 134 | .endm |
| 135 | |
| 136 | .macro RESTORE_ALL |
| 137 | pop r4 |
| 138 | pop r5 |
| 139 | pop r6 |
| 140 | addi sp, #4 |
| 141 | pop r0 |
| 142 | pop r1 |
| 143 | pop r2 |
| 144 | pop r3 |
| 145 | pop r7 |
| 146 | pop r8 |
| 147 | pop r9 |
| 148 | pop r10 |
| 149 | pop r11 |
| 150 | pop r12 |
| 151 | addi r15, #4 ; Skip syscall number |
| 152 | #if defined(CONFIG_ISA_M32R2) && defined(CONFIG_ISA_DSP_LEVEL2) |
| 153 | pop r13 |
| 154 | mvtachi r13, a0 |
| 155 | pop r13 |
| 156 | mvtaclo r13, a0 |
| 157 | pop r13 |
| 158 | mvtachi r13, a1 |
| 159 | pop r13 |
| 160 | mvtaclo r13, a1 |
| 161 | #elif defined(CONFIG_ISA_M32R2) || defined(CONFIG_ISA_M32R) |
Hirokazu Takata | 8e8ff02 | 2006-04-18 22:21:20 -0700 | [diff] [blame] | 162 | pop r13 ; dummy pop acc1h |
| 163 | pop r13 ; dummy pop acc1l |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | pop r13 |
| 165 | mvtachi r13 |
| 166 | pop r13 |
| 167 | mvtaclo r13 |
| 168 | #else |
| 169 | #error unknown isa configuration |
| 170 | #endif |
| 171 | pop r14 |
| 172 | mvtc r14, psw |
| 173 | pop r14 |
| 174 | mvtc r14, bpc |
| 175 | addi sp, #8 ; Skip bbpsw, bbpc |
| 176 | pop r14 |
| 177 | mvtc r14, cr3 ; spu |
| 178 | pop r13 |
| 179 | pop lr ; r14 |
| 180 | pop sp ; spi (r15) |
| 181 | addi sp, #4 ; Skip orig_r0 |
| 182 | .fillinsn |
| 183 | 1: rte |
| 184 | .section .fixup,"ax" |
| 185 | 2: bl do_exit |
| 186 | .previous |
| 187 | .section __ex_table,"a" |
| 188 | ALIGN |
| 189 | .long 1b, 2b |
| 190 | .previous |
| 191 | .endm |
| 192 | |
| 193 | #define GET_CURRENT(reg) get_current reg |
| 194 | .macro get_current reg |
| 195 | ldi \reg, #-8192 |
| 196 | and \reg, sp |
| 197 | .endm |
| 198 | |
Hirokazu Takata | 9287d95 | 2006-01-06 00:18:41 -0800 | [diff] [blame] | 199 | #if !(defined(CONFIG_CHIP_M32102) || defined(CONFIG_CHIP_M32104)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | .macro SWITCH_TO_KERNEL_STACK |
| 201 | ; switch to kernel stack (spi) |
| 202 | clrpsw #0x80 -> nop |
| 203 | .endm |
Hirokazu Takata | 9287d95 | 2006-01-06 00:18:41 -0800 | [diff] [blame] | 204 | #else /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | .macro SWITCH_TO_KERNEL_STACK |
| 206 | push r0 ; save r0 for working |
| 207 | mvfc r0, psw |
| 208 | and3 r0, r0, #0x00ff7f |
| 209 | mvtc r0, psw |
| 210 | slli r0, #16 |
| 211 | bltz r0, 1f ; check BSM-bit |
| 212 | ; |
| 213 | ;; called from kernel context: previous stack = spi |
| 214 | pop r0 ; retrieve r0 |
| 215 | bra 2f |
| 216 | .fillinsn |
| 217 | 1: |
| 218 | ;; called from user context: previous stack = spu |
| 219 | mvfc r0, cr3 ; spu |
| 220 | addi r0, #4 |
| 221 | mvtc r0, cr3 ; spu |
| 222 | ld r0, @(-4,r0) ; retrieve r0 |
| 223 | .fillinsn |
| 224 | 2: |
| 225 | .endm |
Hirokazu Takata | 9287d95 | 2006-01-06 00:18:41 -0800 | [diff] [blame] | 226 | #endif /* CONFIG_CHIP_M32102 || CONFIG_CHIP_M32104 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
| 228 | #endif /* __ASSEMBLY__ */ |
| 229 | |
| 230 | #endif /* _ASM_M32R_ASSEMBLER_H */ |