1 /* SPDX-License-Identifier: GPL-2.0 */ !! 1 /*
2 /* arch/sparc/kernel/entry.S: Sparc trap low- !! 2 * linux/arch/i386/entry.S
3 * 3 *
4 * Copyright (C) 1995, 2007 David S. Miller (d !! 4 * Copyright (C) 1991, 1992 Linus Torvalds
5 * Copyright (C) 1996 Eddie C. Dost (ecd@sky <<
6 * Copyright (C) 1996 Miguel de Icaza (miguel@ <<
7 * Copyright (C) 1996-1999 Jakub Jelinek (jj <<
8 * Copyright (C) 1997 Anton Blanchard (anton@p <<
9 */ 5 */
10 6
11 #include <linux/export.h> !! 7 /*
12 #include <linux/linkage.h> !! 8 * entry.S contains the system-call and fault low-level handling routines.
13 #include <linux/errno.h> !! 9 * This also contains the timer-interrupt handler, as well as all interrupts
14 #include <linux/pgtable.h> !! 10 * and faults that can result in a task-switch.
>> 11 *
>> 12 * NOTE: This code handles signal-recognition, which happens every time
>> 13 * after a timer-interrupt and after each system call.
>> 14 *
>> 15 * I changed all the .align's to 4 (16 byte alignment), as that's faster
>> 16 * on a 486.
>> 17 *
>> 18 * Stack layout in 'ret_from_system_call':
>> 19 * ptrace needs to have all regs on the stack.
>> 20 * if the order here is changed, it needs to be
>> 21 * updated in fork.c:copy_process, signal.c:do_signal,
>> 22 * ptrace.c and ptrace.h
>> 23 *
>> 24 * 0(%esp) - %ebx
>> 25 * 4(%esp) - %ecx
>> 26 * 8(%esp) - %edx
>> 27 * C(%esp) - %esi
>> 28 * 10(%esp) - %edi
>> 29 * 14(%esp) - %ebp
>> 30 * 18(%esp) - %eax
>> 31 * 1C(%esp) - %ds
>> 32 * 20(%esp) - %es
>> 33 * 24(%esp) - orig_eax
>> 34 * 28(%esp) - %eip
>> 35 * 2C(%esp) - %cs
>> 36 * 30(%esp) - %eflags
>> 37 * 34(%esp) - %oldesp
>> 38 * 38(%esp) - %oldss
>> 39 *
>> 40 * "current" is in register %ebx during any slow entries.
>> 41 */
15 42
16 #include <asm/head.h> !! 43 #include <linux/config.h>
17 #include <asm/asi.h> !! 44 #include <linux/linkage.h>
>> 45 #include <asm/thread_info.h>
>> 46 #include <asm/errno.h>
>> 47 #include <asm/segment.h>
18 #include <asm/smp.h> 48 #include <asm/smp.h>
19 #include <asm/contregs.h> <<
20 #include <asm/ptrace.h> <<
21 #include <asm/asm-offsets.h> <<
22 #include <asm/psr.h> <<
23 #include <asm/vaddrs.h> <<
24 #include <asm/page.h> 49 #include <asm/page.h>
25 #include <asm/winmacro.h> !! 50 #include "irq_vectors.h"
26 #include <asm/signal.h> <<
27 #include <asm/obio.h> <<
28 #include <asm/mxcc.h> <<
29 #include <asm/thread_info.h> <<
30 #include <asm/param.h> <<
31 #include <asm/unistd.h> <<
32 51
33 #include <asm/asmmacro.h> !! 52 #define nr_syscalls ((syscall_table_size)/4)
34 53
35 #define curptr g6 !! 54 EBX = 0x00
>> 55 ECX = 0x04
>> 56 EDX = 0x08
>> 57 ESI = 0x0C
>> 58 EDI = 0x10
>> 59 EBP = 0x14
>> 60 EAX = 0x18
>> 61 DS = 0x1C
>> 62 ES = 0x20
>> 63 ORIG_EAX = 0x24
>> 64 EIP = 0x28
>> 65 CS = 0x2C
>> 66 EFLAGS = 0x30
>> 67 OLDESP = 0x34
>> 68 OLDSS = 0x38
>> 69
>> 70 CF_MASK = 0x00000001
>> 71 TF_MASK = 0x00000100
>> 72 IF_MASK = 0x00000200
>> 73 DF_MASK = 0x00000400
>> 74 NT_MASK = 0x00004000
>> 75 VM_MASK = 0x00020000
>> 76
>> 77 /*
>> 78 * ESP0 is at offset 4. 0x200 is the size of the TSS, and
>> 79 * also thus the top-of-stack pointer offset of SYSENTER_ESP
>> 80 */
>> 81 TSS_ESP0_OFFSET = (4 - 0x200)
36 82
37 /* These are just handy. */ !! 83 #ifdef CONFIG_PREEMPT
38 #define _SV save %sp, -STACKFRAME_SZ, % !! 84 #define preempt_stop cli
39 #define _RS restore !! 85 #else
40 !! 86 #define preempt_stop
41 #define FLUSH_ALL_KERNEL_WINDOWS \ !! 87 #define resume_kernel restore_all
42 _SV; _SV; _SV; _SV; _SV; _SV; _SV; \ <<
43 _RS; _RS; _RS; _RS; _RS; _RS; _RS; <<
44 <<
45 .text <<
46 <<
47 #ifdef CONFIG_KGDB <<
48 .align 4 <<
49 .globl arch_kgdb_breakpoint <<
50 .type arch_kgdb_breakpoint,# <<
51 arch_kgdb_breakpoint: <<
52 ta 0x7d <<
53 retl <<
54 nop <<
55 .size arch_kgdb_breakpoint,. <<
56 #endif 88 #endif
57 89
58 #if defined(CONFIG_BLK_DEV_FD) || defined(CONF !! 90 #define SAVE_ALL \
59 .align 4 !! 91 cld; \
60 .globl floppy_hardint !! 92 pushl %es; \
61 floppy_hardint: !! 93 pushl %ds; \
62 /* !! 94 pushl %eax; \
63 * This code cannot touch registers %l !! 95 pushl %ebp; \
64 * because SAVE_ALL depends on their v !! 96 pushl %edi; \
65 * on %l3 also, but we regenerate it b !! 97 pushl %esi; \
66 * Other registers are: !! 98 pushl %edx; \
67 * %l3 -- base address of fdc register !! 99 pushl %ecx; \
68 * %l4 -- pdma_vaddr !! 100 pushl %ebx; \
69 * %l5 -- scratch for ld/st address !! 101 movl $(__USER_DS), %edx; \
70 * %l6 -- pdma_size !! 102 movl %edx, %ds; \
71 * %l7 -- scratch [floppy byte, ld/st !! 103 movl %edx, %es;
72 */ !! 104
73 !! 105 #define RESTORE_INT_REGS \
74 /* Do we have work to do? */ !! 106 popl %ebx; \
75 sethi %hi(doing_pdma), %l7 !! 107 popl %ecx; \
76 ld [%l7 + %lo(doing_pdma)], %l7 !! 108 popl %edx; \
77 cmp %l7, 0 !! 109 popl %esi; \
78 be floppy_dosoftint !! 110 popl %edi; \
79 nop !! 111 popl %ebp; \
80 !! 112 popl %eax
81 /* Load fdc register base */ !! 113
82 sethi %hi(fdc_status), %l3 !! 114 #define RESTORE_REGS \
83 ld [%l3 + %lo(fdc_status)], %l3 !! 115 RESTORE_INT_REGS; \
84 !! 116 1: popl %ds; \
85 /* Setup register addresses */ !! 117 2: popl %es; \
86 sethi %hi(pdma_vaddr), %l5 ! tran !! 118 .section .fixup,"ax"; \
87 ld [%l5 + %lo(pdma_vaddr)], %l4 !! 119 3: movl $0,(%esp); \
88 sethi %hi(pdma_size), %l5 ! byte !! 120 jmp 1b; \
89 ld [%l5 + %lo(pdma_size)], %l6 !! 121 4: movl $0,(%esp); \
90 next_byte: !! 122 jmp 2b; \
91 ldub [%l3], %l7 !! 123 .previous; \
92 !! 124 .section __ex_table,"a";\
93 andcc %l7, 0x80, %g0 ! Does !! 125 .align 4; \
94 bz floppy_fifo_emptied ! fifo !! 126 .long 1b,3b; \
95 andcc %l7, 0x20, %g0 ! in n !! 127 .long 2b,4b; \
96 bz floppy_overrun ! nope !! 128 .previous
97 andcc %l7, 0x40, %g0 ! 0=wr !! 129
98 bz floppy_write !! 130
99 sub %l6, 0x1, %l6 !! 131 #define RESTORE_ALL \
100 !! 132 RESTORE_REGS \
101 /* Ok, actually read this byte */ !! 133 addl $4, %esp; \
102 ldub [%l3 + 1], %l7 !! 134 1: iret; \
103 orcc %g0, %l6, %g0 !! 135 .section .fixup,"ax"; \
104 stb %l7, [%l4] !! 136 2: sti; \
105 bne next_byte !! 137 movl $(__USER_DS), %edx; \
106 add %l4, 0x1, %l4 !! 138 movl %edx, %ds; \
107 !! 139 movl %edx, %es; \
108 b floppy_tdone !! 140 pushl $11; \
109 nop !! 141 call do_exit; \
110 !! 142 .previous; \
111 floppy_write: !! 143 .section __ex_table,"a";\
112 /* Ok, actually write this byte */ !! 144 .align 4; \
113 ldub [%l4], %l7 !! 145 .long 1b,2b; \
114 orcc %g0, %l6, %g0 !! 146 .previous
115 stb %l7, [%l3 + 1] !! 147
116 bne next_byte !! 148
117 add %l4, 0x1, %l4 !! 149
118 !! 150 ENTRY(lcall7)
119 /* fall through... */ !! 151 pushfl # We get a different stack layout with call
120 floppy_tdone: !! 152 # gates, which has to be cleaned up later..
121 sethi %hi(pdma_vaddr), %l5 !! 153 pushl %eax
122 st %l4, [%l5 + %lo(pdma_vaddr)] !! 154 SAVE_ALL
123 sethi %hi(pdma_size), %l5 !! 155 movl %esp, %ebp
124 st %l6, [%l5 + %lo(pdma_size)] !! 156 pushl %ebp
125 /* Flip terminal count pin */ !! 157 pushl $0x7
126 set auxio_register, %l7 !! 158 do_lcall:
127 ld [%l7], %l7 !! 159 movl EIP(%ebp), %eax # due to call gates, this is eflags, not eip..
128 !! 160 movl CS(%ebp), %edx # this is eip..
129 ldub [%l7], %l5 !! 161 movl EFLAGS(%ebp), %ecx # and this is cs..
130 !! 162 movl %eax,EFLAGS(%ebp) #
131 or %l5, 0xc2, %l5 !! 163 movl %edx,EIP(%ebp) # Now we move them to their "normal" places
132 stb %l5, [%l7] !! 164 movl %ecx,CS(%ebp) #
133 andn %l5, 0x02, %l5 !! 165 andl $-8192, %ebp # GET_THREAD_INFO
134 !! 166 movl TI_EXEC_DOMAIN(%ebp), %edx # Get the execution domain
135 2: !! 167 call *4(%edx) # Call the lcall7 handler for the domain
136 /* Kill some time so the bits set */ !! 168 addl $4, %esp
137 WRITE_PAUSE !! 169 popl %eax
138 WRITE_PAUSE !! 170 jmp resume_userspace
139 !! 171
140 stb %l5, [%l7] !! 172 ENTRY(lcall27)
141 !! 173 pushfl # We get a different stack layout with call
142 /* Prevent recursion */ !! 174 # gates, which has to be cleaned up later..
143 sethi %hi(doing_pdma), %l7 !! 175 pushl %eax
144 b floppy_dosoftint !! 176 SAVE_ALL
145 st %g0, [%l7 + %lo(doing_pdma)] !! 177 movl %esp, %ebp
146 !! 178 pushl %ebp
147 /* We emptied the FIFO, but we haven't !! 179 pushl $0x27
148 * as of yet. Store the current trans !! 180 jmp do_lcall
149 * bytes left to read so we can contin !! 181
150 * fast IRQ comes in. !! 182
151 */ !! 183 ENTRY(ret_from_fork)
152 floppy_fifo_emptied: !! 184 pushl %eax
153 sethi %hi(pdma_vaddr), %l5 !! 185 call schedule_tail
154 st %l4, [%l5 + %lo(pdma_vaddr)] !! 186 GET_THREAD_INFO(%ebp)
155 sethi %hi(pdma_size), %l7 !! 187 popl %eax
156 st %l6, [%l7 + %lo(pdma_size)] !! 188 jmp syscall_exit
157 !! 189
158 /* Restore condition codes */ !! 190 /*
159 wr %l0, 0x0, %psr !! 191 * Return to user mode is not as complex as all this looks,
160 WRITE_PAUSE !! 192 * but we want the default path for a system call return to
161 !! 193 * go as quickly as possible which is why some of this is
162 jmp %l1 !! 194 * less clear than it otherwise should be.
163 rett %l2 <<
164 <<
165 floppy_overrun: <<
166 sethi %hi(pdma_vaddr), %l5 <<
167 st %l4, [%l5 + %lo(pdma_vaddr)] <<
168 sethi %hi(pdma_size), %l5 <<
169 st %l6, [%l5 + %lo(pdma_size)] <<
170 /* Prevent recursion */ <<
171 sethi %hi(doing_pdma), %l7 <<
172 st %g0, [%l7 + %lo(doing_pdma)] <<
173 <<
174 /* fall through... */ <<
175 floppy_dosoftint: <<
176 rd %wim, %l3 <<
177 SAVE_ALL <<
178 <<
179 /* Set all IRQs off. */ <<
180 or %l0, PSR_PIL, %l4 <<
181 wr %l4, 0x0, %psr <<
182 WRITE_PAUSE <<
183 wr %l4, PSR_ET, %psr <<
184 WRITE_PAUSE <<
185 <<
186 mov 11, %o0 ! flop <<
187 mov %g0, %o1 ! devi <<
188 call sparc_floppy_irq <<
189 add %sp, STACKFRAME_SZ, %o2 ! stru <<
190 <<
191 RESTORE_ALL <<
192 <<
193 #endif /* (CONFIG_BLK_DEV_FD) */ <<
194 <<
195 /* Bad trap handler */ <<
196 .globl bad_trap_handler <<
197 bad_trap_handler: <<
198 SAVE_ALL <<
199 <<
200 wr %l0, PSR_ET, %psr <<
201 WRITE_PAUSE <<
202 <<
203 add %sp, STACKFRAME_SZ, %o0 ! pt_r <<
204 call do_hw_interrupt <<
205 mov %l7, %o1 ! trap <<
206 <<
207 RESTORE_ALL <<
208 <<
209 /* For now all IRQ's not registered get sent h <<
210 * see if a routine is registered to handle th <<
211 * it will say so on the console. <<
212 */ 195 */
213 196
214 .align 4 !! 197 # userspace resumption stub bypassing syscall exit tracing
215 .globl real_irq_entry, patch_handler_ !! 198 ALIGN
216 real_irq_entry: !! 199 ret_from_exception:
217 SAVE_ALL !! 200 preempt_stop
218 !! 201 ret_from_intr:
219 #ifdef CONFIG_SMP !! 202 GET_THREAD_INFO(%ebp)
220 .globl patchme_maybe_smp_msg !! 203 movl EFLAGS(%esp), %eax # mix EFLAGS and CS
221 !! 204 movb CS(%esp), %al
222 cmp %l7, 11 !! 205 testl $(VM_MASK | 3), %eax
223 patchme_maybe_smp_msg: !! 206 jz resume_kernel # returning to kernel or vm86-space
224 bgu maybe_smp4m_msg !! 207 ENTRY(resume_userspace)
225 nop !! 208 cli # make sure we don't miss an interrupt
>> 209 # setting need_resched or sigpending
>> 210 # between sampling and the iret
>> 211 movl TI_FLAGS(%ebp), %ecx
>> 212 andl $_TIF_WORK_MASK, %ecx # is there any work to be done on
>> 213 # int/exception return?
>> 214 jne work_pending
>> 215 jmp restore_all
>> 216
>> 217 #ifdef CONFIG_PREEMPT
>> 218 ENTRY(resume_kernel)
>> 219 cmpl $0,TI_PRE_COUNT(%ebp) # non-zero preempt_count ?
>> 220 jnz restore_all
>> 221 need_resched:
>> 222 movl TI_FLAGS(%ebp), %ecx # need_resched set ?
>> 223 testb $_TIF_NEED_RESCHED, %cl
>> 224 jz restore_all
>> 225 testl $IF_MASK,EFLAGS(%esp) # interrupts off (exception path) ?
>> 226 jz restore_all
>> 227 movl $PREEMPT_ACTIVE,TI_PRE_COUNT(%ebp)
>> 228 sti
>> 229 call schedule
>> 230 movl $0,TI_PRE_COUNT(%ebp)
>> 231 cli
>> 232 jmp need_resched
226 #endif 233 #endif
227 234
228 real_irq_continue: !! 235 /* SYSENTER_RETURN points to after the "sysenter" instruction in
229 or %l0, PSR_PIL, %g2 !! 236 the vsyscall page. See vsyscall-sysentry.S, which defines the symbol. */
230 wr %g2, 0x0, %psr <<
231 WRITE_PAUSE <<
232 wr %g2, PSR_ET, %psr <<
233 WRITE_PAUSE <<
234 mov %l7, %o0 ! irq <<
235 patch_handler_irq: <<
236 call handler_irq <<
237 add %sp, STACKFRAME_SZ, %o1 ! pt_r <<
238 or %l0, PSR_PIL, %g2 ! rest <<
239 wr %g2, PSR_ET, %psr ! keep <<
240 WRITE_PAUSE <<
241 <<
242 RESTORE_ALL <<
243 <<
244 #ifdef CONFIG_SMP <<
245 /* SMP per-cpu ticker interrupts are h <<
246 smp4m_ticker: <<
247 bne real_irq_continue+4 <<
248 or %l0, PSR_PIL, %g2 <<
249 wr %g2, 0x0, %psr <<
250 WRITE_PAUSE <<
251 wr %g2, PSR_ET, %psr <<
252 WRITE_PAUSE <<
253 call smp4m_percpu_timer_interrupt <<
254 add %sp, STACKFRAME_SZ, %o0 <<
255 wr %l0, PSR_ET, %psr <<
256 WRITE_PAUSE <<
257 RESTORE_ALL <<
258 <<
259 #define GET_PROCESSOR4M_ID(reg) \ <<
260 rd %tbr, %reg; \ <<
261 srl %reg, 12, %reg; \ <<
262 and %reg, 3, %reg; <<
263 <<
264 /* Here is where we check for possible <<
265 * on some level other than 15 which i <<
266 * for cross calls. That has a separa <<
267 * <<
268 * IPIs are sent on Level 12, 13 and 1 <<
269 */ <<
270 maybe_smp4m_msg: <<
271 GET_PROCESSOR4M_ID(o3) <<
272 sethi %hi(sun4m_irq_percpu), %l5 <<
273 sll %o3, 2, %o3 <<
274 or %l5, %lo(sun4m_irq_percpu), %o <<
275 sethi %hi(0x70000000), %o2 ! Chec <<
276 ld [%o5 + %o3], %o1 <<
277 ld [%o1 + 0x00], %o3 ! sun4 <<
278 andcc %o3, %o2, %g0 <<
279 be,a smp4m_ticker <<
280 cmp %l7, 14 <<
281 /* Soft-IRQ IPI */ <<
282 st %o2, [%o1 + 0x04] ! sun4 <<
283 WRITE_PAUSE <<
284 ld [%o1 + 0x00], %g0 ! sun4 <<
285 WRITE_PAUSE <<
286 or %l0, PSR_PIL, %l4 <<
287 wr %l4, 0x0, %psr <<
288 WRITE_PAUSE <<
289 wr %l4, PSR_ET, %psr <<
290 WRITE_PAUSE <<
291 srl %o3, 28, %o2 ! shif <<
292 maybe_smp4m_msg_check_single: <<
293 andcc %o2, 0x1, %g0 <<
294 beq,a maybe_smp4m_msg_check_mask <<
295 andcc %o2, 0x2, %g0 <<
296 call smp_call_function_single_inter <<
297 nop <<
298 andcc %o2, 0x2, %g0 <<
299 maybe_smp4m_msg_check_mask: <<
300 beq,a maybe_smp4m_msg_check_resched <<
301 andcc %o2, 0x4, %g0 <<
302 call smp_call_function_interrupt <<
303 nop <<
304 andcc %o2, 0x4, %g0 <<
305 maybe_smp4m_msg_check_resched: <<
306 /* rescheduling is done in RESTORE_ALL <<
307 beq,a maybe_smp4m_msg_out <<
308 nop <<
309 call smp_resched_interrupt <<
310 nop <<
311 maybe_smp4m_msg_out: <<
312 RESTORE_ALL <<
313 <<
314 .align 4 <<
315 .globl linux_trap_ipi15_sun4m <<
316 linux_trap_ipi15_sun4m: <<
317 SAVE_ALL <<
318 sethi %hi(0x80000000), %o2 <<
319 GET_PROCESSOR4M_ID(o0) <<
320 sethi %hi(sun4m_irq_percpu), %l5 <<
321 or %l5, %lo(sun4m_irq_percpu), %o <<
322 sll %o0, 2, %o0 <<
323 ld [%o5 + %o0], %o5 <<
324 ld [%o5 + 0x00], %o3 ! sun4 <<
325 andcc %o3, %o2, %g0 <<
326 be sun4m_nmi_error ! Must <<
327 st %o2, [%o5 + 0x04] ! sun4 <<
328 WRITE_PAUSE <<
329 ld [%o5 + 0x00], %g0 ! sun4 <<
330 WRITE_PAUSE <<
331 or %l0, PSR_PIL, %l4 <<
332 wr %l4, 0x0, %psr <<
333 WRITE_PAUSE <<
334 wr %l4, PSR_ET, %psr <<
335 WRITE_PAUSE <<
336 call smp4m_cross_call_irq <<
337 nop <<
338 b ret_trap_lockless_ipi <<
339 clr %l6 <<
340 <<
341 .globl smp4d_ticker <<
342 /* SMP per-cpu ticker interrupts are h <<
343 smp4d_ticker: <<
344 SAVE_ALL <<
345 or %l0, PSR_PIL, %g2 <<
346 sethi %hi(CC_ICLR), %o0 <<
347 sethi %hi(1 << 14), %o1 <<
348 or %o0, %lo(CC_ICLR), %o0 <<
349 stha %o1, [%o0] ASI_M_MXCC /* Cle <<
350 wr %g2, 0x0, %psr <<
351 WRITE_PAUSE <<
352 wr %g2, PSR_ET, %psr <<
353 WRITE_PAUSE <<
354 call smp4d_percpu_timer_interrupt <<
355 add %sp, STACKFRAME_SZ, %o0 <<
356 wr %l0, PSR_ET, %psr <<
357 WRITE_PAUSE <<
358 RESTORE_ALL <<
359 <<
360 .align 4 <<
361 .globl linux_trap_ipi15_sun4d <<
362 linux_trap_ipi15_sun4d: <<
363 SAVE_ALL <<
364 sethi %hi(CC_BASE), %o4 <<
365 sethi %hi(MXCC_ERR_ME|MXCC_ERR_PEW|M <<
366 or %o4, (CC_EREG - CC_BASE), %o0 <<
367 ldda [%o0] ASI_M_MXCC, %o0 <<
368 andcc %o0, %o2, %g0 <<
369 bne 1f <<
370 sethi %hi(BB_STAT2), %o2 <<
371 lduba [%o2] ASI_M_CTL, %o2 <<
372 andcc %o2, BB_STAT2_MASK, %g0 <<
373 bne 2f <<
374 or %o4, (CC_ICLR - CC_BASE), %o0 <<
375 sethi %hi(1 << 15), %o1 <<
376 stha %o1, [%o0] ASI_M_MXCC /* Cle <<
377 or %l0, PSR_PIL, %l4 <<
378 wr %l4, 0x0, %psr <<
379 WRITE_PAUSE <<
380 wr %l4, PSR_ET, %psr <<
381 WRITE_PAUSE <<
382 call smp4d_cross_call_irq <<
383 nop <<
384 b ret_trap_lockless_ipi <<
385 clr %l6 <<
386 <<
387 1: /* MXCC error */ <<
388 2: /* BB error */ <<
389 /* Disable PIL 15 */ <<
390 set CC_IMSK, %l4 <<
391 lduha [%l4] ASI_M_MXCC, %l5 <<
392 sethi %hi(1 << 15), %l7 <<
393 or %l5, %l7, %l5 <<
394 stha %l5, [%l4] ASI_M_MXCC <<
395 /* FIXME */ <<
396 1: b,a 1b <<
397 <<
398 .globl smpleon_ipi <<
399 .extern leon_ipi_interrupt <<
400 /* SMP per-cpu IPI interrupts are hand <<
401 smpleon_ipi: <<
402 SAVE_ALL <<
403 or %l0, PSR_PIL, %g2 <<
404 wr %g2, 0x0, %psr <<
405 WRITE_PAUSE <<
406 wr %g2, PSR_ET, %psr <<
407 WRITE_PAUSE <<
408 call leonsmp_ipi_interrupt <<
409 add %sp, STACKFRAME_SZ, %o1 ! pt_r <<
410 wr %l0, PSR_ET, %psr <<
411 WRITE_PAUSE <<
412 RESTORE_ALL <<
413 <<
414 .align 4 <<
415 .globl linux_trap_ipi15_leon <<
416 linux_trap_ipi15_leon: <<
417 SAVE_ALL <<
418 or %l0, PSR_PIL, %l4 <<
419 wr %l4, 0x0, %psr <<
420 WRITE_PAUSE <<
421 wr %l4, PSR_ET, %psr <<
422 WRITE_PAUSE <<
423 call leon_cross_call_irq <<
424 nop <<
425 b ret_trap_lockless_ipi <<
426 clr %l6 <<
427 <<
428 #endif /* CONFIG_SMP */ <<
429 <<
430 /* This routine handles illegal instru <<
431 * instruction attempts from user code <<
432 */ <<
433 .align 4 <<
434 .globl bad_instruction <<
435 bad_instruction: <<
436 sethi %hi(0xc1f80000), %l4 <<
437 ld [%l1], %l5 <<
438 sethi %hi(0x81d80000), %l7 <<
439 and %l5, %l4, %l5 <<
440 cmp %l5, %l7 <<
441 be 1f <<
442 SAVE_ALL <<
443 <<
444 wr %l0, PSR_ET, %psr <<
445 WRITE_PAUSE <<
446 <<
447 add %sp, STACKFRAME_SZ, %o0 <<
448 mov %l1, %o1 <<
449 mov %l2, %o2 <<
450 call do_illegal_instruction <<
451 mov %l0, %o3 <<
452 <<
453 RESTORE_ALL <<
454 <<
455 1: /* unimplemented flush - just skip */ <<
456 jmpl %l2, %g0 <<
457 rett %l2 + 4 <<
458 <<
459 .align 4 <<
460 .globl priv_instruction <<
461 priv_instruction: <<
462 SAVE_ALL <<
463 <<
464 wr %l0, PSR_ET, %psr <<
465 WRITE_PAUSE <<
466 <<
467 add %sp, STACKFRAME_SZ, %o0 <<
468 mov %l1, %o1 <<
469 mov %l2, %o2 <<
470 call do_priv_instruction <<
471 mov %l0, %o3 <<
472 <<
473 RESTORE_ALL <<
474 <<
475 /* This routine handles unaligned data <<
476 .align 4 <<
477 .globl mna_handler <<
478 mna_handler: <<
479 andcc %l0, PSR_PS, %g0 <<
480 be mna_fromuser <<
481 nop <<
482 <<
483 SAVE_ALL <<
484 <<
485 wr %l0, PSR_ET, %psr <<
486 WRITE_PAUSE <<
487 <<
488 ld [%l1], %o1 <<
489 call kernel_unaligned_trap <<
490 add %sp, STACKFRAME_SZ, %o0 <<
491 <<
492 RESTORE_ALL <<
493 <<
494 mna_fromuser: <<
495 SAVE_ALL <<
496 <<
497 wr %l0, PSR_ET, %psr <<
498 WRITE_PAUSE <<
499 <<
500 ld [%l1], %o1 <<
501 call user_unaligned_trap <<
502 add %sp, STACKFRAME_SZ, %o0 <<
503 <<
504 RESTORE_ALL <<
505 <<
506 /* This routine handles floating point <<
507 .align 4 <<
508 .globl fpd_trap_handler <<
509 fpd_trap_handler: <<
510 SAVE_ALL <<
511 <<
512 wr %l0, PSR_ET, %psr <<
513 WRITE_PAUSE <<
514 <<
515 add %sp, STACKFRAME_SZ, %o0 <<
516 mov %l1, %o1 <<
517 mov %l2, %o2 <<
518 call do_fpd_trap <<
519 mov %l0, %o3 <<
520 <<
521 RESTORE_ALL <<
522 <<
523 /* This routine handles Floating Point <<
524 .align 4 <<
525 .globl fpe_trap_handler <<
526 fpe_trap_handler: <<
527 set fpsave_magic, %l5 <<
528 cmp %l1, %l5 <<
529 be 1f <<
530 sethi %hi(fpsave), %l5 <<
531 or %l5, %lo(fpsave), %l5 <<
532 cmp %l1, %l5 <<
533 bne 2f <<
534 sethi %hi(fpsave_catch2), %l5 <<
535 or %l5, %lo(fpsave_catch2), %l5 <<
536 wr %l0, 0x0, %psr <<
537 WRITE_PAUSE <<
538 jmp %l5 <<
539 rett %l5 + 4 <<
540 1: <<
541 sethi %hi(fpsave_catch), %l5 <<
542 or %l5, %lo(fpsave_catch), %l5 <<
543 wr %l0, 0x0, %psr <<
544 WRITE_PAUSE <<
545 jmp %l5 <<
546 rett %l5 + 4 <<
547 <<
548 2: <<
549 SAVE_ALL <<
550 <<
551 wr %l0, PSR_ET, %psr <<
552 WRITE_PAUSE <<
553 <<
554 add %sp, STACKFRAME_SZ, %o0 <<
555 mov %l1, %o1 <<
556 mov %l2, %o2 <<
557 call do_fpe_trap <<
558 mov %l0, %o3 <<
559 <<
560 RESTORE_ALL <<
561 <<
562 /* This routine handles Tag Overflow E <<
563 .align 4 <<
564 .globl do_tag_overflow <<
565 do_tag_overflow: <<
566 SAVE_ALL <<
567 <<
568 wr %l0, PSR_ET, %psr <<
569 WRITE_PAUSE <<
570 <<
571 add %sp, STACKFRAME_SZ, %o0 <<
572 mov %l1, %o1 <<
573 mov %l2, %o2 <<
574 call handle_tag_overflow <<
575 mov %l0, %o3 <<
576 <<
577 RESTORE_ALL <<
578 <<
579 /* This routine handles Watchpoint Exc <<
580 .align 4 <<
581 .globl do_watchpoint <<
582 do_watchpoint: <<
583 SAVE_ALL <<
584 <<
585 wr %l0, PSR_ET, %psr <<
586 WRITE_PAUSE <<
587 <<
588 add %sp, STACKFRAME_SZ, %o0 <<
589 mov %l1, %o1 <<
590 mov %l2, %o2 <<
591 call handle_watchpoint <<
592 mov %l0, %o3 <<
593 <<
594 RESTORE_ALL <<
595 <<
596 /* This routine handles Register Acces <<
597 .align 4 <<
598 .globl do_reg_access <<
599 do_reg_access: <<
600 SAVE_ALL <<
601 <<
602 wr %l0, PSR_ET, %psr <<
603 WRITE_PAUSE <<
604 <<
605 add %sp, STACKFRAME_SZ, %o0 <<
606 mov %l1, %o1 <<
607 mov %l2, %o2 <<
608 call handle_reg_access <<
609 mov %l0, %o3 <<
610 <<
611 RESTORE_ALL <<
612 <<
613 /* This routine handles Co-Processor D <<
614 .align 4 <<
615 .globl do_cp_disabled <<
616 do_cp_disabled: <<
617 SAVE_ALL <<
618 <<
619 wr %l0, PSR_ET, %psr <<
620 WRITE_PAUSE <<
621 <<
622 add %sp, STACKFRAME_SZ, %o0 <<
623 mov %l1, %o1 <<
624 mov %l2, %o2 <<
625 call handle_cp_disabled <<
626 mov %l0, %o3 <<
627 <<
628 RESTORE_ALL <<
629 <<
630 /* This routine handles Co-Processor E <<
631 .align 4 <<
632 .globl do_cp_exception <<
633 do_cp_exception: <<
634 SAVE_ALL <<
635 <<
636 wr %l0, PSR_ET, %psr <<
637 WRITE_PAUSE <<
638 <<
639 add %sp, STACKFRAME_SZ, %o0 <<
640 mov %l1, %o1 <<
641 mov %l2, %o2 <<
642 call handle_cp_exception <<
643 mov %l0, %o3 <<
644 <<
645 RESTORE_ALL <<
646 <<
647 /* This routine handles Hardware Divid <<
648 .align 4 <<
649 .globl do_hw_divzero <<
650 do_hw_divzero: <<
651 SAVE_ALL <<
652 <<
653 wr %l0, PSR_ET, %psr <<
654 WRITE_PAUSE <<
655 <<
656 add %sp, STACKFRAME_SZ, %o0 <<
657 mov %l1, %o1 <<
658 mov %l2, %o2 <<
659 call handle_hw_divzero <<
660 mov %l0, %o3 <<
661 <<
662 RESTORE_ALL <<
663 <<
664 .align 4 <<
665 .globl do_flush_windows <<
666 do_flush_windows: <<
667 SAVE_ALL <<
668 <<
669 wr %l0, PSR_ET, %psr <<
670 WRITE_PAUSE <<
671 <<
672 andcc %l0, PSR_PS, %g0 <<
673 bne dfw_kernel <<
674 nop <<
675 <<
676 call flush_user_windows <<
677 nop <<
678 <<
679 /* Advance over the trap instruction. <<
680 ld [%sp + STACKFRAME_SZ + PT_NPC] <<
681 add %l1, 0x4, %l2 <<
682 st %l1, [%sp + STACKFRAME_SZ + PT <<
683 st %l2, [%sp + STACKFRAME_SZ + PT <<
684 <<
685 RESTORE_ALL <<
686 <<
687 .globl flush_patch_one <<
688 <<
689 /* We get these for debugging routines <<
690 dfw_kernel: <<
691 flush_patch_one: <<
692 FLUSH_ALL_KERNEL_WINDOWS <<
693 <<
694 /* Advance over the trap instruction. <<
695 ld [%sp + STACKFRAME_SZ + PT_NPC] <<
696 add %l1, 0x4, %l2 <<
697 st %l1, [%sp + STACKFRAME_SZ + PT <<
698 st %l2, [%sp + STACKFRAME_SZ + PT <<
699 <<
700 RESTORE_ALL <<
701 <<
702 /* The getcc software trap. The user <<
703 * the %psr in register %g1. <<
704 */ <<
705 <<
706 .align 4 <<
707 .globl getcc_trap_handler <<
708 getcc_trap_handler: <<
709 srl %l0, 20, %g1 ! give user <<
710 and %g1, 0xf, %g1 ! only ICC bit <<
711 jmp %l2 ! advance over <<
712 rett %l2 + 0x4 ! like this... <<
713 <<
714 /* The setcc software trap. The user <<
715 * that it would like placed in the %p <<
716 * any unintentional bits! <<
717 */ <<
718 <<
719 .align 4 <<
720 .globl setcc_trap_handler <<
721 setcc_trap_handler: <<
722 sll %g1, 0x14, %l4 <<
723 set PSR_ICC, %l5 <<
724 andn %l0, %l5, %l0 ! clear ICC bi <<
725 and %l4, %l5, %l4 ! clear non-IC <<
726 or %l4, %l0, %l4 ! or them in.. <<
727 <<
728 wr %l4, 0x0, %psr ! set new %psr <<
729 WRITE_PAUSE ! TI scumbags. <<
730 <<
731 jmp %l2 ! advance over <<
732 rett %l2 + 0x4 ! like this... <<
733 <<
734 sun4m_nmi_error: <<
735 /* NMI async memory error handling. */ <<
736 sethi %hi(0x80000000), %l4 <<
737 sethi %hi(sun4m_irq_global), %o5 <<
738 ld [%o5 + %lo(sun4m_irq_global)], <<
739 st %l4, [%l5 + 0x0c] ! sun4 <<
740 WRITE_PAUSE <<
741 ld [%l5 + 0x00], %g0 ! sun4 <<
742 WRITE_PAUSE <<
743 or %l0, PSR_PIL, %l4 <<
744 wr %l4, 0x0, %psr <<
745 WRITE_PAUSE <<
746 wr %l4, PSR_ET, %psr <<
747 WRITE_PAUSE <<
748 call sun4m_nmi <<
749 nop <<
750 st %l4, [%l5 + 0x08] ! sun4 <<
751 WRITE_PAUSE <<
752 ld [%l5 + 0x00], %g0 ! sun4 <<
753 WRITE_PAUSE <<
754 RESTORE_ALL <<
755 <<
756 #ifndef CONFIG_SMP <<
757 .align 4 <<
758 .globl linux_trap_ipi15_sun4m <<
759 linux_trap_ipi15_sun4m: <<
760 SAVE_ALL <<
761 <<
762 ba sun4m_nmi_error <<
763 nop <<
764 #endif /* CONFIG_SMP */ <<
765 <<
766 .align 4 <<
767 .globl srmmu_fault <<
768 srmmu_fault: <<
769 mov 0x400, %l5 <<
770 mov 0x300, %l4 <<
771 <<
772 LEON_PI(lda [%l5] ASI_LEON_MMUREGS, %l6) <<
773 SUN_PI_(lda [%l5] ASI_M_MMUREGS, %l6) <<
774 <<
775 LEON_PI(lda [%l4] ASI_LEON_MMUREGS, %l5) <<
776 SUN_PI_(lda [%l4] ASI_M_MMUREGS, %l5) <<
777 237
778 andn %l6, 0xfff, %l6 !! 238 # sysenter call handler stub
779 srl %l5, 6, %l5 !! 239 ENTRY(sysenter_entry)
780 !! 240 movl TSS_ESP0_OFFSET(%esp),%esp
781 and %l5, 2, %l5 !! 241 sysenter_past_esp:
782 or %l5, %l6, %l6 !! 242 sti
783 !! 243 pushl $(__USER_DS)
784 or %l6, %l7, %l7 !! 244 pushl %ebp
785 !! 245 pushfl
786 SAVE_ALL !! 246 pushl $(__USER_CS)
787 !! 247 pushl $SYSENTER_RETURN
788 mov %l7, %o1 !! 248
789 mov %l7, %o2 !! 249 /*
790 and %o1, 1, %o1 ! arg2 !! 250 * Load the potential sixth argument from user stack.
791 mov %l7, %o3 !! 251 * Careful about security.
792 and %o2, 2, %o2 ! arg3 <<
793 andn %o3, 0xfff, %o3 ! arg4 <<
794 <<
795 wr %l0, PSR_ET, %psr <<
796 WRITE_PAUSE <<
797 <<
798 call do_sparc_fault <<
799 add %sp, STACKFRAME_SZ, %o0 ! arg1 <<
800 <<
801 RESTORE_ALL <<
802 <<
803 .align 4 <<
804 sunos_execv: <<
805 .globl sunos_execv <<
806 b sys_execve <<
807 clr %i2 <<
808 <<
809 .align 4 <<
810 .globl sys_sigstack <<
811 sys_sigstack: <<
812 mov %o7, %l5 <<
813 mov %fp, %o2 <<
814 call do_sys_sigstack <<
815 mov %l5, %o7 <<
816 <<
817 .align 4 <<
818 .globl sys_sigreturn <<
819 sys_sigreturn: <<
820 call do_sigreturn <<
821 add %sp, STACKFRAME_SZ, %o0 <<
822 <<
823 ld [%curptr + TI_FLAGS], %l5 <<
824 andcc %l5, _TIF_SYSCALL_TRACE, %g0 <<
825 be 1f <<
826 nop <<
827 <<
828 call syscall_trace <<
829 mov 1, %o1 <<
830 <<
831 1: <<
832 /* We don't want to muck with user reg <<
833 * normal syscall, just return. <<
834 */ <<
835 RESTORE_ALL <<
836 <<
837 .align 4 <<
838 .globl sys_rt_sigreturn <<
839 sys_rt_sigreturn: <<
840 call do_rt_sigreturn <<
841 add %sp, STACKFRAME_SZ, %o0 <<
842 <<
843 ld [%curptr + TI_FLAGS], %l5 <<
844 andcc %l5, _TIF_SYSCALL_TRACE, %g0 <<
845 be 1f <<
846 nop <<
847 <<
848 add %sp, STACKFRAME_SZ, %o0 <<
849 call syscall_trace <<
850 mov 1, %o1 <<
851 <<
852 1: <<
853 /* We are returning to a signal handle <<
854 RESTORE_ALL <<
855 <<
856 /* Now that we have a real sys_clone, <<
857 * implemented in terms of it. Our _r <<
858 * of SunOS vfork() will use sys_vfork <<
859 * <<
860 * XXX These three should be consolida <<
861 * XXX code just like on sparc64... -D <<
862 */ <<
863 .align 4 <<
864 .globl sys_fork, flush_patch_two <<
865 sys_fork: <<
866 mov %o7, %l5 <<
867 flush_patch_two: <<
868 FLUSH_ALL_KERNEL_WINDOWS; <<
869 ld [%curptr + TI_TASK], %o4 <<
870 rd %psr, %g4 <<
871 WRITE_PAUSE <<
872 rd %wim, %g5 <<
873 WRITE_PAUSE <<
874 std %g4, [%o4 + AOFF_task_thread + <<
875 add %sp, STACKFRAME_SZ, %o0 <<
876 call sparc_fork <<
877 mov %l5, %o7 <<
878 <<
879 /* Whee, kernel threads! */ <<
880 .globl sys_clone, flush_patch_three <<
881 sys_clone: <<
882 mov %o7, %l5 <<
883 flush_patch_three: <<
884 FLUSH_ALL_KERNEL_WINDOWS; <<
885 ld [%curptr + TI_TASK], %o4 <<
886 rd %psr, %g4 <<
887 WRITE_PAUSE <<
888 rd %wim, %g5 <<
889 WRITE_PAUSE <<
890 std %g4, [%o4 + AOFF_task_thread + <<
891 add %sp, STACKFRAME_SZ, %o0 <<
892 call sparc_clone <<
893 mov %l5, %o7 <<
894 <<
895 /* Whee, real vfork! */ <<
896 .globl sys_vfork, flush_patch_four <<
897 sys_vfork: <<
898 flush_patch_four: <<
899 FLUSH_ALL_KERNEL_WINDOWS; <<
900 ld [%curptr + TI_TASK], %o4 <<
901 rd %psr, %g4 <<
902 WRITE_PAUSE <<
903 rd %wim, %g5 <<
904 WRITE_PAUSE <<
905 std %g4, [%o4 + AOFF_task_thread + <<
906 sethi %hi(sparc_vfork), %l1 <<
907 jmpl %l1 + %lo(sparc_vfork), %g0 <<
908 add %sp, STACKFRAME_SZ, %o0 <<
909 <<
910 .align 4 <<
911 linux_sparc_ni_syscall: <<
912 sethi %hi(sys_ni_syscall), %l7 <<
913 b do_syscall <<
914 or %l7, %lo(sys_ni_syscall), %l7 <<
915 <<
916 linux_syscall_trace: <<
917 add %sp, STACKFRAME_SZ, %o0 <<
918 call syscall_trace <<
919 mov 0, %o1 <<
920 cmp %o0, 0 <<
921 bne 3f <<
922 mov -ENOSYS, %o0 <<
923 <<
924 /* Syscall tracing can modify the regi <<
925 ld [%sp + STACKFRAME_SZ + PT_G1], <<
926 sethi %hi(sys_call_table), %l7 <<
927 ld [%sp + STACKFRAME_SZ + PT_I0], <<
928 or %l7, %lo(sys_call_table), %l7 <<
929 ld [%sp + STACKFRAME_SZ + PT_I1], <<
930 ld [%sp + STACKFRAME_SZ + PT_I2], <<
931 ld [%sp + STACKFRAME_SZ + PT_I3], <<
932 ld [%sp + STACKFRAME_SZ + PT_I4], <<
933 ld [%sp + STACKFRAME_SZ + PT_I5], <<
934 cmp %g1, NR_syscalls <<
935 bgeu 3f <<
936 mov -ENOSYS, %o0 <<
937 <<
938 sll %g1, 2, %l4 <<
939 mov %i0, %o0 <<
940 ld [%l7 + %l4], %l7 <<
941 mov %i1, %o1 <<
942 mov %i2, %o2 <<
943 mov %i3, %o3 <<
944 b 2f <<
945 mov %i4, %o4 <<
946 <<
947 .globl ret_from_fork <<
948 ret_from_fork: <<
949 call schedule_tail <<
950 ld [%g3 + TI_TASK], %o0 <<
951 b ret_sys_call <<
952 ld [%sp + STACKFRAME_SZ + PT_I0], <<
953 <<
954 .globl ret_from_kernel_thread <<
955 ret_from_kernel_thread: <<
956 call schedule_tail <<
957 ld [%g3 + TI_TASK], %o0 <<
958 ld [%sp + STACKFRAME_SZ + PT_G1], <<
959 call %l0 <<
960 ld [%sp + STACKFRAME_SZ + PT_G2], <<
961 rd %psr, %l1 <<
962 ld [%sp + STACKFRAME_SZ + PT_PSR] <<
963 andn %l0, PSR_CWP, %l0 <<
964 nop <<
965 and %l1, PSR_CWP, %l1 <<
966 or %l0, %l1, %l0 <<
967 st %l0, [%sp + STACKFRAME_SZ + PT <<
968 b ret_sys_call <<
969 mov 0, %o0 <<
970 <<
971 /* Linux native system calls enter her <<
972 .align 4 <<
973 .globl linux_sparc_syscall <<
974 linux_sparc_syscall: <<
975 sethi %hi(PSR_SYSCALL), %l4 <<
976 or %l0, %l4, %l0 <<
977 /* Direct access to user regs, must fa <<
978 cmp %g1, NR_syscalls <<
979 bgeu linux_sparc_ni_syscall <<
980 sll %g1, 2, %l4 <<
981 ld [%l7 + %l4], %l7 <<
982 <<
983 do_syscall: <<
984 SAVE_ALL_HEAD <<
985 rd %wim, %l3 <<
986 <<
987 wr %l0, PSR_ET, %psr <<
988 mov %i0, %o0 <<
989 mov %i1, %o1 <<
990 mov %i2, %o2 <<
991 <<
992 ld [%curptr + TI_FLAGS], %l5 <<
993 mov %i3, %o3 <<
994 andcc %l5, _TIF_SYSCALL_TRACE, %g0 <<
995 mov %i4, %o4 <<
996 bne linux_syscall_trace <<
997 mov %i0, %l6 <<
998 2: <<
999 call %l7 <<
1000 mov %i5, %o5 <<
1001 <<
1002 3: <<
1003 st %o0, [%sp + STACKFRAME_SZ + P <<
1004 <<
1005 ret_sys_call: <<
1006 ld [%curptr + TI_FLAGS], %l5 <<
1007 cmp %o0, -ERESTART_RESTARTBLOCK <<
1008 ld [%sp + STACKFRAME_SZ + PT_PSR <<
1009 set PSR_C, %g2 <<
1010 bgeu 1f <<
1011 andcc %l5, _TIF_SYSCALL_TRACE, %g0 <<
1012 <<
1013 /* System call success, clear Carry c <<
1014 andn %g3, %g2, %g3 <<
1015 st %g3, [%sp + STACKFRAME_SZ + P <<
1016 bne linux_syscall_trace2 <<
1017 ld [%sp + STACKFRAME_SZ + PT_NPC <<
1018 add %l1, 0x4, %l2 <<
1019 st %l1, [%sp + STACKFRAME_SZ + P <<
1020 b ret_trap_entry <<
1021 st %l2, [%sp + STACKFRAME_SZ + P <<
1022 1: <<
1023 /* System call failure, set Carry con <<
1024 * Also, get abs(errno) to return to <<
1025 */ <<
1026 sub %g0, %o0, %o0 <<
1027 or %g3, %g2, %g3 <<
1028 st %o0, [%sp + STACKFRAME_SZ + P <<
1029 st %g3, [%sp + STACKFRAME_SZ + P <<
1030 bne linux_syscall_trace2 <<
1031 ld [%sp + STACKFRAME_SZ + PT_NPC <<
1032 add %l1, 0x4, %l2 <<
1033 st %l1, [%sp + STACKFRAME_SZ + P <<
1034 b ret_trap_entry <<
1035 st %l2, [%sp + STACKFRAME_SZ + P <<
1036 <<
1037 linux_syscall_trace2: <<
1038 add %sp, STACKFRAME_SZ, %o0 <<
1039 mov 1, %o1 <<
1040 call syscall_trace <<
1041 add %l1, 0x4, %l2 <<
1042 st %l1, [%sp + STACKFRAME_SZ + P <<
1043 b ret_trap_entry <<
1044 st %l2, [%sp + STACKFRAME_SZ + P <<
1045 <<
1046 <<
1047 /* Saving and restoring the FPU state is best <<
1048 * <<
1049 * void fpsave(unsigned long *fpregs, unsigne <<
1050 * void *fpqueue, unsigned long * <<
1051 */ 252 */
1052 !! 253 cmpl $__PAGE_OFFSET-3,%ebp
1053 .globl fpsave !! 254 jae syscall_fault
1054 fpsave: !! 255 1: movl (%ebp),%ebp
1055 st %fsr, [%o1] ! this can tr !! 256 .section __ex_table,"a"
1056 ld [%o1], %g1 <<
1057 set 0x2000, %g4 <<
1058 andcc %g1, %g4, %g0 <<
1059 be 2f <<
1060 mov 0, %g2 <<
1061 <<
1062 /* We have an fpqueue to save. */ <<
1063 1: <<
1064 std %fq, [%o2] <<
1065 fpsave_magic: <<
1066 st %fsr, [%o1] <<
1067 ld [%o1], %g3 <<
1068 andcc %g3, %g4, %g0 <<
1069 add %g2, 1, %g2 <<
1070 bne 1b <<
1071 add %o2, 8, %o2 <<
1072 <<
1073 2: <<
1074 st %g2, [%o3] <<
1075 <<
1076 std %f0, [%o0 + 0x00] <<
1077 std %f2, [%o0 + 0x08] <<
1078 std %f4, [%o0 + 0x10] <<
1079 std %f6, [%o0 + 0x18] <<
1080 std %f8, [%o0 + 0x20] <<
1081 std %f10, [%o0 + 0x28] <<
1082 std %f12, [%o0 + 0x30] <<
1083 std %f14, [%o0 + 0x38] <<
1084 std %f16, [%o0 + 0x40] <<
1085 std %f18, [%o0 + 0x48] <<
1086 std %f20, [%o0 + 0x50] <<
1087 std %f22, [%o0 + 0x58] <<
1088 std %f24, [%o0 + 0x60] <<
1089 std %f26, [%o0 + 0x68] <<
1090 std %f28, [%o0 + 0x70] <<
1091 retl <<
1092 std %f30, [%o0 + 0x78] <<
1093 <<
1094 /* Thanks for Theo Deraadt and the au <<
1095 * code for pointing out this possibl <<
1096 * above we could trap on the fsr sto <<
1097 * code has to know how to deal with <<
1098 */ <<
1099 fpsave_catch: <<
1100 b fpsave_magic + 4 <<
1101 st %fsr, [%o1] <<
1102 <<
1103 fpsave_catch2: <<
1104 b fpsave + 4 <<
1105 st %fsr, [%o1] <<
1106 <<
1107 /* void fpload(unsigned long *fpregs, <<
1108 <<
1109 .globl fpload <<
1110 fpload: <<
1111 ldd [%o0 + 0x00], %f0 <<
1112 ldd [%o0 + 0x08], %f2 <<
1113 ldd [%o0 + 0x10], %f4 <<
1114 ldd [%o0 + 0x18], %f6 <<
1115 ldd [%o0 + 0x20], %f8 <<
1116 ldd [%o0 + 0x28], %f10 <<
1117 ldd [%o0 + 0x30], %f12 <<
1118 ldd [%o0 + 0x38], %f14 <<
1119 ldd [%o0 + 0x40], %f16 <<
1120 ldd [%o0 + 0x48], %f18 <<
1121 ldd [%o0 + 0x50], %f20 <<
1122 ldd [%o0 + 0x58], %f22 <<
1123 ldd [%o0 + 0x60], %f24 <<
1124 ldd [%o0 + 0x68], %f26 <<
1125 ldd [%o0 + 0x70], %f28 <<
1126 ldd [%o0 + 0x78], %f30 <<
1127 ld [%o1], %fsr <<
1128 retl <<
1129 nop <<
1130 <<
1131 /* __ndelay and __udelay take two arg <<
1132 * 0 - nsecs or usecs to delay <<
1133 * 1 - per_cpu udelay_val (loops per <<
1134 * <<
1135 * Note that ndelay gives HZ times hi <<
1136 * limit. udelay can handle up to 1s <<
1137 */ <<
1138 .globl __ndelay <<
1139 __ndelay: <<
1140 save %sp, -STACKFRAME_SZ, %sp <<
1141 mov %i0, %o0 ! rou <<
1142 mov 0x1ae, %o1 ! 2** <<
1143 umul %o0, %o1, %o0 <<
1144 rd %y, %o1 <<
1145 mov %i1, %o1 ! ude <<
1146 umul %o0, %o1, %o0 <<
1147 rd %y, %o1 <<
1148 ba delay_continue <<
1149 mov %o1, %o0 ! >>3 <<
1150 <<
1151 .globl __udelay <<
1152 __udelay: <<
1153 save %sp, -STACKFRAME_SZ, %sp <<
1154 mov %i0, %o0 <<
1155 sethi %hi(0x10c7), %o1 ! rou <<
1156 or %o1, %lo(0x10c7), %o1 ! 2** <<
1157 umul %o0, %o1, %o0 <<
1158 rd %y, %o1 <<
1159 mov %i1, %o1 ! ude <<
1160 umul %o0, %o1, %o0 <<
1161 rd %y, %o1 <<
1162 sethi %hi(0x028f4b62), %l0 ! Add <<
1163 or %g0, %lo(0x028f4b62), %l0 <<
1164 addcc %o0, %l0, %o0 ! 2** <<
1165 bcs,a 3f <<
1166 add %o1, 0x01, %o1 <<
1167 3: <<
1168 mov HZ, %o0 ! >>3 <<
1169 umul %o0, %o1, %o0 <<
1170 rd %y, %o1 <<
1171 <<
1172 delay_continue: <<
1173 cmp %o0, 0x0 <<
1174 1: <<
1175 bne 1b <<
1176 subcc %o0, 1, %o0 <<
1177 <<
1178 ret <<
1179 restore <<
1180 EXPORT_SYMBOL(__udelay) <<
1181 EXPORT_SYMBOL(__ndelay) <<
1182 <<
1183 /* Handle a software breakpoint */ <<
1184 /* We have to inform parent that chil <<
1185 .align 4 257 .align 4
1186 .globl breakpoint_trap !! 258 .long 1b,syscall_fault
1187 breakpoint_trap: !! 259 .previous
1188 rd %wim,%l3 <<
1189 SAVE_ALL <<
1190 wr %l0, PSR_ET, %psr <<
1191 WRITE_PAUSE <<
1192 <<
1193 st %i0, [%sp + STACKFRAME_SZ + P <<
1194 call sparc_breakpoint <<
1195 add %sp, STACKFRAME_SZ, %o0 <<
1196 260
1197 RESTORE_ALL !! 261 pushl %eax
1198 <<
1199 #ifdef CONFIG_KGDB <<
1200 ENTRY(kgdb_trap_low) <<
1201 rd %wim,%l3 <<
1202 SAVE_ALL 262 SAVE_ALL
1203 wr %l0, PSR_ET, %psr !! 263 GET_THREAD_INFO(%ebp)
1204 WRITE_PAUSE !! 264 cmpl $(nr_syscalls), %eax
1205 !! 265 jae syscall_badsys
1206 mov %l7, %o0 ! tra !! 266
1207 call kgdb_trap !! 267 testb $_TIF_SYSCALL_TRACE,TI_FLAGS(%ebp)
1208 add %sp, STACKFRAME_SZ, %o1 ! str !! 268 jnz syscall_trace_entry
1209 !! 269 call *sys_call_table(,%eax,4)
1210 RESTORE_ALL !! 270 movl %eax,EAX(%esp)
1211 ENDPROC(kgdb_trap_low) !! 271 cli
>> 272 movl TI_FLAGS(%ebp), %ecx
>> 273 testw $_TIF_ALLWORK_MASK, %cx
>> 274 jne syscall_exit_work
>> 275 /* if something modifies registers it must also disable sysexit */
>> 276 movl EIP(%esp), %edx
>> 277 movl OLDESP(%esp), %ecx
>> 278 sti
>> 279 sysexit
>> 280
>> 281
>> 282 # system call handler stub
>> 283 ENTRY(system_call)
>> 284 pushl %eax # save orig_eax
>> 285 SAVE_ALL
>> 286 GET_THREAD_INFO(%ebp)
>> 287 cmpl $(nr_syscalls), %eax
>> 288 jae syscall_badsys
>> 289 # system call tracing in operation
>> 290 testb $_TIF_SYSCALL_TRACE,TI_FLAGS(%ebp)
>> 291 jnz syscall_trace_entry
>> 292 syscall_call:
>> 293 call *sys_call_table(,%eax,4)
>> 294 movl %eax,EAX(%esp) # store the return value
>> 295 syscall_exit:
>> 296 cli # make sure we don't miss an interrupt
>> 297 # setting need_resched or sigpending
>> 298 # between sampling and the iret
>> 299 movl TI_FLAGS(%ebp), %ecx
>> 300 testw $_TIF_ALLWORK_MASK, %cx # current->work
>> 301 jne syscall_exit_work
>> 302 restore_all:
>> 303 RESTORE_ALL
>> 304
>> 305 # perform work that needs to be done immediately before resumption
>> 306 ALIGN
>> 307 work_pending:
>> 308 testb $_TIF_NEED_RESCHED, %cl
>> 309 jz work_notifysig
>> 310 work_resched:
>> 311 call schedule
>> 312 cli # make sure we don't miss an interrupt
>> 313 # setting need_resched or sigpending
>> 314 # between sampling and the iret
>> 315 movl TI_FLAGS(%ebp), %ecx
>> 316 andl $_TIF_WORK_MASK, %ecx # is there any work to be done other
>> 317 # than syscall tracing?
>> 318 jz restore_all
>> 319 testb $_TIF_NEED_RESCHED, %cl
>> 320 jnz work_resched
>> 321
>> 322 work_notifysig: # deal with pending signals and
>> 323 # notify-resume requests
>> 324 testl $VM_MASK, EFLAGS(%esp)
>> 325 movl %esp, %eax
>> 326 jne work_notifysig_v86 # returning to kernel-space or
>> 327 # vm86-space
>> 328 xorl %edx, %edx
>> 329 call do_notify_resume
>> 330 jmp restore_all
>> 331
>> 332 ALIGN
>> 333 work_notifysig_v86:
>> 334 pushl %ecx
>> 335 call save_v86_state
>> 336 popl %ecx
>> 337 movl %eax, %esp
>> 338 xorl %edx, %edx
>> 339 call do_notify_resume
>> 340 jmp restore_all
>> 341
>> 342 # perform syscall exit tracing
>> 343 ALIGN
>> 344 syscall_trace_entry:
>> 345 movl $-ENOSYS,EAX(%esp)
>> 346 movl %esp, %eax
>> 347 xorl %edx,%edx
>> 348 call do_syscall_trace
>> 349 movl ORIG_EAX(%esp), %eax
>> 350 cmpl $(nr_syscalls), %eax
>> 351 jnae syscall_call
>> 352 jmp syscall_exit
>> 353
>> 354 # perform syscall exit tracing
>> 355 ALIGN
>> 356 syscall_exit_work:
>> 357 testb $_TIF_SYSCALL_TRACE, %cl
>> 358 jz work_pending
>> 359 sti # could let do_syscall_trace() call
>> 360 # schedule() instead
>> 361 movl %esp, %eax
>> 362 movl $1, %edx
>> 363 call do_syscall_trace
>> 364 jmp resume_userspace
>> 365
>> 366 ALIGN
>> 367 syscall_fault:
>> 368 pushl %eax # save orig_eax
>> 369 SAVE_ALL
>> 370 GET_THREAD_INFO(%ebp)
>> 371 movl $-EFAULT,EAX(%esp)
>> 372 jmp resume_userspace
>> 373
>> 374 ALIGN
>> 375 syscall_badsys:
>> 376 movl $-ENOSYS,EAX(%esp)
>> 377 jmp resume_userspace
>> 378
>> 379 /*
>> 380 * Build the entry stubs and pointer table with
>> 381 * some assembler magic.
>> 382 */
>> 383 .data
>> 384 ENTRY(interrupt)
>> 385 .text
>> 386
>> 387 vector=0
>> 388 ENTRY(irq_entries_start)
>> 389 .rept NR_IRQS
>> 390 ALIGN
>> 391 1: pushl $vector-256
>> 392 jmp common_interrupt
>> 393 .data
>> 394 .long 1b
>> 395 .text
>> 396 vector=vector+1
>> 397 .endr
>> 398
>> 399 ALIGN
>> 400 common_interrupt:
>> 401 SAVE_ALL
>> 402 call do_IRQ
>> 403 jmp ret_from_intr
>> 404
>> 405 #define BUILD_INTERRUPT(name, nr) \
>> 406 ENTRY(name) \
>> 407 pushl $nr-256; \
>> 408 SAVE_ALL \
>> 409 call smp_/**/name; \
>> 410 jmp ret_from_intr;
>> 411
>> 412 /* The include is where all of the SMP etc. interrupts come from */
>> 413 #include "entry_arch.h"
>> 414
>> 415 ENTRY(divide_error)
>> 416 pushl $0 # no error code
>> 417 pushl $do_divide_error
>> 418 ALIGN
>> 419 error_code:
>> 420 pushl %ds
>> 421 pushl %eax
>> 422 xorl %eax, %eax
>> 423 pushl %ebp
>> 424 pushl %edi
>> 425 pushl %esi
>> 426 pushl %edx
>> 427 decl %eax # eax = -1
>> 428 pushl %ecx
>> 429 pushl %ebx
>> 430 cld
>> 431 movl %es, %ecx
>> 432 movl ORIG_EAX(%esp), %esi # get the error code
>> 433 movl ES(%esp), %edi # get the function address
>> 434 movl %eax, ORIG_EAX(%esp)
>> 435 movl %ecx, ES(%esp)
>> 436 movl %esp, %edx
>> 437 pushl %esi # push the error code
>> 438 pushl %edx # push the pt_regs pointer
>> 439 movl $(__USER_DS), %edx
>> 440 movl %edx, %ds
>> 441 movl %edx, %es
>> 442 call *%edi
>> 443 addl $8, %esp
>> 444 jmp ret_from_exception
>> 445
>> 446 ENTRY(coprocessor_error)
>> 447 pushl $0
>> 448 pushl $do_coprocessor_error
>> 449 jmp error_code
>> 450
>> 451 ENTRY(simd_coprocessor_error)
>> 452 pushl $0
>> 453 pushl $do_simd_coprocessor_error
>> 454 jmp error_code
>> 455
>> 456 ENTRY(device_not_available)
>> 457 pushl $-1 # mark this as an int
>> 458 SAVE_ALL
>> 459 movl %cr0, %eax
>> 460 testl $0x4, %eax # EM (math emulation bit)
>> 461 jne device_not_available_emulate
>> 462 preempt_stop
>> 463 call math_state_restore
>> 464 jmp ret_from_exception
>> 465 device_not_available_emulate:
>> 466 pushl $0 # temporary storage for ORIG_EIP
>> 467 call math_emulate
>> 468 addl $4, %esp
>> 469 jmp ret_from_exception
>> 470
>> 471 /*
>> 472 * Debug traps and NMI can happen at the one SYSENTER instruction
>> 473 * that sets up the real kernel stack. Check here, since we can't
>> 474 * allow the wrong stack to be used.
>> 475 *
>> 476 * "TSS_ESP0_OFFSET+12" is because the NMI/debug handler will have
>> 477 * already pushed 3 words if it hits on the sysenter instruction:
>> 478 * eflags, cs and eip.
>> 479 *
>> 480 * We just load the right stack, and push the three (known) values
>> 481 * by hand onto the new stack - while updating the return eip past
>> 482 * the instruction that would have done it for sysenter.
>> 483 */
>> 484 #define FIX_STACK(offset, ok, label) \
>> 485 cmpw $__KERNEL_CS,4(%esp); \
>> 486 jne ok; \
>> 487 label: \
>> 488 movl TSS_ESP0_OFFSET+offset(%esp),%esp; \
>> 489 pushfl; \
>> 490 pushl $__KERNEL_CS; \
>> 491 pushl $sysenter_past_esp
>> 492
>> 493 ENTRY(debug)
>> 494 cmpl $sysenter_entry,(%esp)
>> 495 jne debug_stack_correct
>> 496 FIX_STACK(12, debug_stack_correct, debug_esp_fix_insn)
>> 497 debug_stack_correct:
>> 498 pushl $0
>> 499 pushl $do_debug
>> 500 jmp error_code
>> 501
>> 502 /*
>> 503 * NMI is doubly nasty. It can happen _while_ we're handling
>> 504 * a debug fault, and the debug fault hasn't yet been able to
>> 505 * clear up the stack. So we first check whether we got an
>> 506 * NMI on the sysenter entry path, but after that we need to
>> 507 * check whether we got an NMI on the debug path where the debug
>> 508 * fault happened on the sysenter path.
>> 509 */
>> 510 ENTRY(nmi)
>> 511 cmpl $sysenter_entry,(%esp)
>> 512 je nmi_stack_fixup
>> 513 pushl %eax
>> 514 movl %esp,%eax
>> 515 /* Do not access memory above the end of our stack page,
>> 516 * it might not exist.
>> 517 */
>> 518 andl $0x1fff,%eax
>> 519 cmpl $0x1fec,%eax
>> 520 popl %eax
>> 521 jae nmi_stack_correct
>> 522 cmpl $sysenter_entry,12(%esp)
>> 523 je nmi_debug_stack_check
>> 524 nmi_stack_correct:
>> 525 pushl %eax
>> 526 SAVE_ALL
>> 527 movl %esp, %edx
>> 528 pushl $0
>> 529 pushl %edx
>> 530 call do_nmi
>> 531 addl $8, %esp
>> 532 RESTORE_ALL
>> 533
>> 534 nmi_stack_fixup:
>> 535 FIX_STACK(12,nmi_stack_correct, 1)
>> 536 jmp nmi_stack_correct
>> 537 nmi_debug_stack_check:
>> 538 cmpw $__KERNEL_CS,16(%esp)
>> 539 jne nmi_stack_correct
>> 540 cmpl $debug - 1,(%esp)
>> 541 jle nmi_stack_correct
>> 542 cmpl $debug_esp_fix_insn,(%esp)
>> 543 jle nmi_debug_stack_fixup
>> 544 nmi_debug_stack_fixup:
>> 545 FIX_STACK(24,nmi_stack_correct, 1)
>> 546 jmp nmi_stack_correct
>> 547
>> 548 ENTRY(int3)
>> 549 pushl $0
>> 550 pushl $do_int3
>> 551 jmp error_code
>> 552
>> 553 ENTRY(overflow)
>> 554 pushl $0
>> 555 pushl $do_overflow
>> 556 jmp error_code
>> 557
>> 558 ENTRY(bounds)
>> 559 pushl $0
>> 560 pushl $do_bounds
>> 561 jmp error_code
>> 562
>> 563 ENTRY(invalid_op)
>> 564 pushl $0
>> 565 pushl $do_invalid_op
>> 566 jmp error_code
>> 567
>> 568 ENTRY(coprocessor_segment_overrun)
>> 569 pushl $0
>> 570 pushl $do_coprocessor_segment_overrun
>> 571 jmp error_code
>> 572
>> 573 ENTRY(invalid_TSS)
>> 574 pushl $do_invalid_TSS
>> 575 jmp error_code
>> 576
>> 577 ENTRY(segment_not_present)
>> 578 pushl $do_segment_not_present
>> 579 jmp error_code
>> 580
>> 581 ENTRY(stack_segment)
>> 582 pushl $do_stack_segment
>> 583 jmp error_code
>> 584
>> 585 ENTRY(general_protection)
>> 586 pushl $do_general_protection
>> 587 jmp error_code
>> 588
>> 589 ENTRY(alignment_check)
>> 590 pushl $do_alignment_check
>> 591 jmp error_code
>> 592
>> 593 ENTRY(page_fault)
>> 594 pushl $do_page_fault
>> 595 jmp error_code
>> 596
>> 597 #ifdef CONFIG_X86_MCE
>> 598 ENTRY(machine_check)
>> 599 pushl $0
>> 600 pushl machine_check_vector
>> 601 jmp error_code
1212 #endif 602 #endif
1213 603
1214 .align 4 !! 604 ENTRY(spurious_interrupt_bug)
1215 .globl flush_patch_exception !! 605 pushl $0
1216 flush_patch_exception: !! 606 pushl $do_spurious_interrupt_bug
1217 FLUSH_ALL_KERNEL_WINDOWS; !! 607 jmp error_code
1218 ldd [%o0], %o6 !! 608
1219 jmpl %o7 + 0xc, %g0 !! 609 .data
1220 mov 1, %g1 !! 610 ENTRY(sys_call_table)
1221 !! 611 .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */
1222 .align 4 !! 612 .long sys_exit
1223 .globl kill_user_windows, kuw_patch1 !! 613 .long sys_fork
1224 .globl kuw_patch1 !! 614 .long sys_read
1225 kuw_patch1_7win: sll %o3, 6, %o3 !! 615 .long sys_write
1226 !! 616 .long sys_open /* 5 */
1227 /* No matter how much overhead this r !! 617 .long sys_close
1228 * case scenario, it is several times !! 618 .long sys_waitpid
1229 * traps with the old method of just !! 619 .long sys_creat
1230 */ !! 620 .long sys_link
1231 kill_user_windows: !! 621 .long sys_unlink /* 10 */
1232 ld [%g6 + TI_UWINMASK], %o0 !! 622 .long sys_execve
1233 orcc %g0, %o0, %g0 !! 623 .long sys_chdir
1234 be 3f !! 624 .long sys_time
1235 rd %psr, %o5 !! 625 .long sys_mknod
1236 or %o5, PSR_PIL, %o4 !! 626 .long sys_chmod /* 15 */
1237 wr %o4, 0x0, %psr !! 627 .long sys_lchown16
1238 WRITE_PAUSE !! 628 .long sys_ni_syscall /* old break syscall holder */
1239 1: !! 629 .long sys_stat
1240 ld [%g6 + TI_UWINMASK], %o0 !! 630 .long sys_lseek
1241 orcc %g0, %o0, %g0 !! 631 .long sys_getpid /* 20 */
1242 be 4f !! 632 .long sys_mount
1243 rd %wim, %o3 !! 633 .long sys_oldumount
1244 srl %o3, 1, %o4 !! 634 .long sys_setuid16
1245 kuw_patch1: !! 635 .long sys_getuid16
1246 sll %o3, 7, %o3 !! 636 .long sys_stime /* 25 */
1247 or %o4, %o3, %o3 !! 637 .long sys_ptrace
1248 andncc %o0, %o3, %o0 !! 638 .long sys_alarm
1249 bne kuw_patch1 !! 639 .long sys_fstat
1250 srl %o3, 1, %o4 !! 640 .long sys_pause
1251 wr %o3, 0x0, %wim !! 641 .long sys_utime /* 30 */
1252 st %g0, [%g6 + TI_UWINMASK] !! 642 .long sys_ni_syscall /* old stty syscall holder */
1253 4: !! 643 .long sys_ni_syscall /* old gtty syscall holder */
1254 wr %o5, 0x0, %psr !! 644 .long sys_access
1255 WRITE_PAUSE !! 645 .long sys_nice
1256 3: !! 646 .long sys_ni_syscall /* 35 - old ftime syscall holder */
1257 retl !! 647 .long sys_sync
1258 st %g0, [%g6 + TI_W_SAVED] !! 648 .long sys_kill
1259 !! 649 .long sys_rename
1260 .align 4 !! 650 .long sys_mkdir
1261 .globl restore_current !! 651 .long sys_rmdir /* 40 */
1262 restore_current: !! 652 .long sys_dup
1263 LOAD_CURRENT(g6, o0) !! 653 .long sys_pipe
1264 retl !! 654 .long sys_times
1265 nop !! 655 .long sys_ni_syscall /* old prof syscall holder */
1266 !! 656 .long sys_brk /* 45 */
1267 #ifdef CONFIG_PCIC_PCI !! 657 .long sys_setgid16
1268 #include <asm/pcic.h> !! 658 .long sys_getgid16
1269 !! 659 .long sys_signal
1270 .align 4 !! 660 .long sys_geteuid16
1271 .globl linux_trap_ipi15_pcic !! 661 .long sys_getegid16 /* 50 */
1272 linux_trap_ipi15_pcic: !! 662 .long sys_acct
1273 rd %wim, %l3 !! 663 .long sys_umount /* recycled never used phys() */
1274 SAVE_ALL !! 664 .long sys_ni_syscall /* old lock syscall holder */
1275 !! 665 .long sys_ioctl
1276 /* !! 666 .long sys_fcntl /* 55 */
1277 * First deactivate NMI !! 667 .long sys_ni_syscall /* old mpx syscall holder */
1278 * or we cannot drop ET, cannot get w !! 668 .long sys_setpgid
1279 * The busy loop is necessary because !! 669 .long sys_ni_syscall /* old ulimit syscall holder */
1280 * sometimes does not go away quickly !! 670 .long sys_olduname
1281 */ !! 671 .long sys_umask /* 60 */
1282 sethi %hi(pcic_regs), %o1 !! 672 .long sys_chroot
1283 ld [%o1 + %lo(pcic_regs)], %o2 !! 673 .long sys_ustat
1284 !! 674 .long sys_dup2
1285 ! Get pending status for printouts la !! 675 .long sys_getppid
1286 ld [%o2 + PCI_SYS_INT_PENDING], !! 676 .long sys_getpgrp /* 65 */
1287 !! 677 .long sys_setsid
1288 mov PCI_SYS_INT_PENDING_CLEAR_ALL !! 678 .long sys_sigaction
1289 stb %o1, [%o2 + PCI_SYS_INT_PENDI !! 679 .long sys_sgetmask
1290 1: !! 680 .long sys_ssetmask
1291 ld [%o2 + PCI_SYS_INT_PENDING], !! 681 .long sys_setreuid16 /* 70 */
1292 andcc %o1, ((PCI_SYS_INT_PENDING_PI !! 682 .long sys_setregid16
1293 bne 1b !! 683 .long sys_sigsuspend
1294 nop !! 684 .long sys_sigpending
1295 !! 685 .long sys_sethostname
1296 or %l0, PSR_PIL, %l4 !! 686 .long sys_setrlimit /* 75 */
1297 wr %l4, 0x0, %psr !! 687 .long sys_old_getrlimit
1298 WRITE_PAUSE !! 688 .long sys_getrusage
1299 wr %l4, PSR_ET, %psr !! 689 .long sys_gettimeofday
1300 WRITE_PAUSE !! 690 .long sys_settimeofday
1301 !! 691 .long sys_getgroups16 /* 80 */
1302 call pcic_nmi !! 692 .long sys_setgroups16
1303 add %sp, STACKFRAME_SZ, %o1 ! str !! 693 .long old_select
1304 RESTORE_ALL !! 694 .long sys_symlink
1305 !! 695 .long sys_lstat
1306 .globl pcic_nmi_trap_patch !! 696 .long sys_readlink /* 85 */
1307 pcic_nmi_trap_patch: !! 697 .long sys_uselib
1308 sethi %hi(linux_trap_ipi15_pcic), % !! 698 .long sys_swapon
1309 jmpl %l3 + %lo(linux_trap_ipi15_pc !! 699 .long sys_reboot
1310 rd %psr, %l0 !! 700 .long old_readdir
1311 .word 0 !! 701 .long old_mmap /* 90 */
1312 !! 702 .long sys_munmap
1313 #endif /* CONFIG_PCIC_PCI */ !! 703 .long sys_truncate
1314 !! 704 .long sys_ftruncate
1315 .globl flushw_all !! 705 .long sys_fchmod
1316 flushw_all: !! 706 .long sys_fchown16 /* 95 */
1317 save %sp, -0x40, %sp !! 707 .long sys_getpriority
1318 save %sp, -0x40, %sp !! 708 .long sys_setpriority
1319 save %sp, -0x40, %sp !! 709 .long sys_ni_syscall /* old profil syscall holder */
1320 save %sp, -0x40, %sp !! 710 .long sys_statfs
1321 save %sp, -0x40, %sp !! 711 .long sys_fstatfs /* 100 */
1322 save %sp, -0x40, %sp !! 712 .long sys_ioperm
1323 save %sp, -0x40, %sp !! 713 .long sys_socketcall
1324 restore !! 714 .long sys_syslog
1325 restore !! 715 .long sys_setitimer
1326 restore !! 716 .long sys_getitimer /* 105 */
1327 restore !! 717 .long sys_newstat
1328 restore !! 718 .long sys_newlstat
1329 restore !! 719 .long sys_newfstat
1330 ret !! 720 .long sys_uname
1331 restore !! 721 .long sys_iopl /* 110 */
1332 !! 722 .long sys_vhangup
1333 #ifdef CONFIG_SMP !! 723 .long sys_ni_syscall /* old "idle" system call */
1334 ENTRY(hard_smp_processor_id) !! 724 .long sys_vm86old
1335 661: rd %tbr, %g1 !! 725 .long sys_wait4
1336 srl %g1, 12, %o0 !! 726 .long sys_swapoff /* 115 */
1337 and %o0, 3, %o0 !! 727 .long sys_sysinfo
1338 .section .cpuid_patch, "ax" !! 728 .long sys_ipc
1339 /* Instruction location. */ !! 729 .long sys_fsync
1340 .word 661b !! 730 .long sys_sigreturn
1341 /* SUN4D implementation. */ !! 731 .long sys_clone /* 120 */
1342 lda [%g0] ASI_M_VIKING_TM !! 732 .long sys_setdomainname
1343 nop !! 733 .long sys_newuname
1344 nop !! 734 .long sys_modify_ldt
1345 /* LEON implementation. */ !! 735 .long sys_adjtimex
1346 rd %asr17, %o0 !! 736 .long sys_mprotect /* 125 */
1347 srl %o0, 0x1c, %o0 !! 737 .long sys_sigprocmask
1348 nop !! 738 .long sys_ni_syscall /* old "create_module" */
1349 .previous !! 739 .long sys_init_module
1350 retl !! 740 .long sys_delete_module
1351 nop !! 741 .long sys_ni_syscall /* 130: old "get_kernel_syms" */
1352 ENDPROC(hard_smp_processor_id) !! 742 .long sys_quotactl
1353 #endif !! 743 .long sys_getpgid
>> 744 .long sys_fchdir
>> 745 .long sys_bdflush
>> 746 .long sys_sysfs /* 135 */
>> 747 .long sys_personality
>> 748 .long sys_ni_syscall /* reserved for afs_syscall */
>> 749 .long sys_setfsuid16
>> 750 .long sys_setfsgid16
>> 751 .long sys_llseek /* 140 */
>> 752 .long sys_getdents
>> 753 .long sys_select
>> 754 .long sys_flock
>> 755 .long sys_msync
>> 756 .long sys_readv /* 145 */
>> 757 .long sys_writev
>> 758 .long sys_getsid
>> 759 .long sys_fdatasync
>> 760 .long sys_sysctl
>> 761 .long sys_mlock /* 150 */
>> 762 .long sys_munlock
>> 763 .long sys_mlockall
>> 764 .long sys_munlockall
>> 765 .long sys_sched_setparam
>> 766 .long sys_sched_getparam /* 155 */
>> 767 .long sys_sched_setscheduler
>> 768 .long sys_sched_getscheduler
>> 769 .long sys_sched_yield
>> 770 .long sys_sched_get_priority_max
>> 771 .long sys_sched_get_priority_min /* 160 */
>> 772 .long sys_sched_rr_get_interval
>> 773 .long sys_nanosleep
>> 774 .long sys_mremap
>> 775 .long sys_setresuid16
>> 776 .long sys_getresuid16 /* 165 */
>> 777 .long sys_vm86
>> 778 .long sys_ni_syscall /* Old sys_query_module */
>> 779 .long sys_poll
>> 780 .long sys_nfsservctl
>> 781 .long sys_setresgid16 /* 170 */
>> 782 .long sys_getresgid16
>> 783 .long sys_prctl
>> 784 .long sys_rt_sigreturn
>> 785 .long sys_rt_sigaction
>> 786 .long sys_rt_sigprocmask /* 175 */
>> 787 .long sys_rt_sigpending
>> 788 .long sys_rt_sigtimedwait
>> 789 .long sys_rt_sigqueueinfo
>> 790 .long sys_rt_sigsuspend
>> 791 .long sys_pread64 /* 180 */
>> 792 .long sys_pwrite64
>> 793 .long sys_chown16
>> 794 .long sys_getcwd
>> 795 .long sys_capget
>> 796 .long sys_capset /* 185 */
>> 797 .long sys_sigaltstack
>> 798 .long sys_sendfile
>> 799 .long sys_ni_syscall /* reserved for streams1 */
>> 800 .long sys_ni_syscall /* reserved for streams2 */
>> 801 .long sys_vfork /* 190 */
>> 802 .long sys_getrlimit
>> 803 .long sys_mmap2
>> 804 .long sys_truncate64
>> 805 .long sys_ftruncate64
>> 806 .long sys_stat64 /* 195 */
>> 807 .long sys_lstat64
>> 808 .long sys_fstat64
>> 809 .long sys_lchown
>> 810 .long sys_getuid
>> 811 .long sys_getgid /* 200 */
>> 812 .long sys_geteuid
>> 813 .long sys_getegid
>> 814 .long sys_setreuid
>> 815 .long sys_setregid
>> 816 .long sys_getgroups /* 205 */
>> 817 .long sys_setgroups
>> 818 .long sys_fchown
>> 819 .long sys_setresuid
>> 820 .long sys_getresuid
>> 821 .long sys_setresgid /* 210 */
>> 822 .long sys_getresgid
>> 823 .long sys_chown
>> 824 .long sys_setuid
>> 825 .long sys_setgid
>> 826 .long sys_setfsuid /* 215 */
>> 827 .long sys_setfsgid
>> 828 .long sys_pivot_root
>> 829 .long sys_mincore
>> 830 .long sys_madvise
>> 831 .long sys_getdents64 /* 220 */
>> 832 .long sys_fcntl64
>> 833 .long sys_ni_syscall /* reserved for TUX */
>> 834 .long sys_ni_syscall
>> 835 .long sys_gettid
>> 836 .long sys_readahead /* 225 */
>> 837 .long sys_setxattr
>> 838 .long sys_lsetxattr
>> 839 .long sys_fsetxattr
>> 840 .long sys_getxattr
>> 841 .long sys_lgetxattr /* 230 */
>> 842 .long sys_fgetxattr
>> 843 .long sys_listxattr
>> 844 .long sys_llistxattr
>> 845 .long sys_flistxattr
>> 846 .long sys_removexattr /* 235 */
>> 847 .long sys_lremovexattr
>> 848 .long sys_fremovexattr
>> 849 .long sys_tkill
>> 850 .long sys_sendfile64
>> 851 .long sys_futex /* 240 */
>> 852 .long sys_sched_setaffinity
>> 853 .long sys_sched_getaffinity
>> 854 .long sys_set_thread_area
>> 855 .long sys_get_thread_area
>> 856 .long sys_io_setup /* 245 */
>> 857 .long sys_io_destroy
>> 858 .long sys_io_getevents
>> 859 .long sys_io_submit
>> 860 .long sys_io_cancel
>> 861 .long sys_fadvise64 /* 250 */
>> 862 .long sys_ni_syscall
>> 863 .long sys_exit_group
>> 864 .long sys_lookup_dcookie
>> 865 .long sys_epoll_create
>> 866 .long sys_epoll_ctl /* 255 */
>> 867 .long sys_epoll_wait
>> 868 .long sys_remap_file_pages
>> 869 .long sys_set_tid_address
>> 870 .long sys_timer_create
>> 871 .long sys_timer_settime /* 260 */
>> 872 .long sys_timer_gettime
>> 873 .long sys_timer_getoverrun
>> 874 .long sys_timer_delete
>> 875 .long sys_clock_settime
>> 876 .long sys_clock_gettime /* 265 */
>> 877 .long sys_clock_getres
>> 878 .long sys_clock_nanosleep
>> 879 .long sys_statfs64
>> 880 .long sys_fstatfs64
>> 881 .long sys_tgkill /* 270 */
>> 882 .long sys_utimes
>> 883 .long sys_fadvise64_64
>> 884 .long sys_ni_syscall /* sys_vserver */
1354 885
1355 /* End of entry.S */ !! 886 syscall_table_size=(.-sys_call_table)
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