2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 1994, 95, 96, 99, 2001 Ralf Baechle
7 * Copyright (C) 1994, 1995, 1996 Paul M. Antoine.
8 * Copyright (C) 1999 Silicon Graphics, Inc.
10 #ifndef _ASM_STACKFRAME_H
11 #define _ASM_STACKFRAME_H
13 #include <linux/config.h>
14 #include <linux/threads.h>
17 #include <asm/mipsregs.h>
18 #include <asm/offset.h>
35 LONG_S $10, PT_R10(sp)
36 LONG_S $11, PT_R11(sp)
38 LONG_S $12, PT_R12(sp)
39 LONG_S $13, PT_R13(sp)
40 LONG_S $14, PT_R14(sp)
41 LONG_S $15, PT_R15(sp)
42 LONG_S $24, PT_R24(sp)
46 LONG_S $16, PT_R16(sp)
47 LONG_S $17, PT_R17(sp)
48 LONG_S $18, PT_R18(sp)
49 LONG_S $19, PT_R19(sp)
50 LONG_S $20, PT_R20(sp)
51 LONG_S $21, PT_R21(sp)
52 LONG_S $22, PT_R22(sp)
53 LONG_S $23, PT_R23(sp)
54 LONG_S $30, PT_R30(sp)
58 .macro get_saved_sp /* SMP variation */
65 LONG_L k1, %lo(kernelsp)(k1)
70 lui k0, %hi(pgd_current)
71 daddiu k0, %lo(pgd_current)
75 LONG_L k1, %lo(kernelsp)(k1)
79 .macro set_saved_sp stackp temp temp2
81 mfc0 \temp, CP0_CONTEXT
84 LONG_S \stackp, kernelsp(\temp)
89 lui \temp2, %hi(kernelsp)
91 LONG_S \stackp, %lo(kernelsp)(\temp)
95 .macro get_saved_sp /* Uniprocessor variation */
97 LONG_L k1, %lo(kernelsp)(k1)
100 .macro set_saved_sp stackp temp temp2
101 LONG_S \stackp, kernelsp
109 sll k0, 3 /* extract cu0 bit */
114 /* Called from user mode, new stack. */
117 PTR_SUBU sp, k1, PT_SIZE
118 LONG_S k0, PT_R29(sp)
123 LONG_S v1, PT_STATUS(sp)
127 LONG_S v1, PT_CAUSE(sp)
135 LONG_S v1, PT_EPC(sp)
136 LONG_S $25, PT_R25(sp)
137 LONG_S $28, PT_R28(sp)
138 LONG_S $31, PT_R31(sp)
139 ori $28, sp, _THREAD_MASK
140 xori $28, _THREAD_MASK
159 LONG_L $24, PT_LO(sp)
165 LONG_L $24, PT_HI(sp)
166 LONG_L $10, PT_R10(sp)
167 LONG_L $11, PT_R11(sp)
169 LONG_L $12, PT_R12(sp)
170 LONG_L $13, PT_R13(sp)
171 LONG_L $14, PT_R14(sp)
172 LONG_L $15, PT_R15(sp)
173 LONG_L $24, PT_R24(sp)
176 .macro RESTORE_STATIC
177 LONG_L $16, PT_R16(sp)
178 LONG_L $17, PT_R17(sp)
179 LONG_L $18, PT_R18(sp)
180 LONG_L $19, PT_R19(sp)
181 LONG_L $20, PT_R20(sp)
182 LONG_L $21, PT_R21(sp)
183 LONG_L $22, PT_R22(sp)
184 LONG_L $23, PT_R23(sp)
185 LONG_L $30, PT_R30(sp)
188 #if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
200 LONG_L v0, PT_STATUS(sp)
205 LONG_L $31, PT_R31(sp)
206 LONG_L $28, PT_R28(sp)
207 LONG_L $25, PT_R25(sp)
221 .macro RESTORE_SP_AND_RET
224 LONG_L k0, PT_EPC(sp)
225 LONG_L sp, PT_R29(sp)
243 LONG_L v0, PT_STATUS(sp)
248 LONG_L v1, PT_EPC(sp)
250 LONG_L $31, PT_R31(sp)
251 LONG_L $28, PT_R28(sp)
252 LONG_L $25, PT_R25(sp)
266 .macro RESTORE_SP_AND_RET
267 LONG_L sp, PT_R29(sp)
276 LONG_L sp, PT_R29(sp)
287 .macro RESTORE_ALL_AND_RET
296 * Move to kernel mode and disable interrupts.
297 * Set cp0 enable bit as sign that we're running on the kernel stack
301 li t1, ST0_CU0 | 0x1f
309 * Move to kernel mode and enable interrupts.
310 * Set cp0 enable bit as sign that we're running on the kernel stack
314 li t1, ST0_CU0 | 0x1f
322 * Just move to kernel mode and leave interrupts as they are.
323 * Set cp0 enable bit as sign that we're running on the kernel stack
327 li t1, ST0_CU0 | 0x1e
334 #endif /* _ASM_STACKFRAME_H */