summaryrefslogtreecommitdiff
path: root/arch/sparc64/solaris/entry64.S
blob: eb314ed23cdbecb693ebef1ff3c797ca51e24696 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
/* $Id: entry64.S,v 1.7 2002/02/09 19:49:31 davem Exp $
 * entry64.S:  Solaris syscall emulation entry point.
 *
 * Copyright (C) 1996,1997,1998 Jakub Jelinek   (jj@sunsite.mff.cuni.cz)
 * Copyright (C) 1995,1997 David S. Miller (davem@caip.rutgers.edu)
 * Copyright (C) 1996 Miguel de Icaza      (miguel@nuclecu.unam.mx)
 */

#include <linux/errno.h>

#include <asm/head.h>
#include <asm/asi.h>
#include <asm/smp.h>
#include <asm/ptrace.h>
#include <asm/page.h>
#include <asm/signal.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/thread_info.h>

#include "conv.h"

#define NR_SYSCALLS	256

	.text
solaris_syscall_trace:
	add		%sp, PTREGS_OFF, %o0
	call		syscall_trace
	 mov		0, %o1
	srl		%i0, 0, %o0
	mov		%i4, %o4
	srl		%i1, 0, %o1
	mov		%i5, %o5
	andcc		%l3, 1, %g0
	be,pt		%icc, 2f
	 srl		%i2, 0, %o2
	b,pt		%xcc, 2f
	 add		%sp, PTREGS_OFF, %o0

solaris_sucks:
/* Solaris is a big system which needs to be able to do all the things
 * in Inf+1 different ways */
	add		%i6, 0x5c, %o0
	mov		%i0, %g1
	mov		%i1, %i0
	mov		%i2, %i1
	srl		%o0, 0, %o0
	mov		%i3, %i2
	movrz		%g1, 256, %g1 /* Ensure we don't loop forever */
	mov		%i4, %i3
	mov		%i5, %i4
	ba,pt		%xcc, solaris_sparc_syscall
exen:	 lduwa		[%o0] ASI_S, %i5

exenf:	ba,pt		%xcc, solaris_sparc_syscall
	 clr		%i5

/* For shared binaries, binfmt_elf32 already sets up personality
   and exec_domain. This is to handle static binaries as well */
solaris_reg:
	call		solaris_register
	 nop
	ba,pt		%xcc, 1f
	 mov		%i4, %o4

linux_syscall_for_solaris:
	sethi		%hi(sys_call_table32), %l6
	or		%l6, %lo(sys_call_table32), %l6
	sll		%l3, 2, %l4
	ba,pt		%xcc, 10f
	 lduw		[%l6 + %l4], %l3

	/* Solaris system calls enter here... */
	.align	32
	.globl	solaris_sparc_syscall, entry64_personality_patch
solaris_sparc_syscall:
entry64_personality_patch:
	ldub		[%g4 + 0x0], %l0
	cmp		%g1, 255
	bg,pn		%icc, solaris_unimplemented
	 srl		%g1, 0, %g1
	sethi		%hi(solaris_sys_table), %l7
	or		%l7, %lo(solaris_sys_table), %l7
	brz,pn		%g1, solaris_sucks
	 mov		%i4, %o4
	sll		%g1, 2, %l4
	cmp		%l0, 1
	bne,pn		%icc, solaris_reg
1:	 srl		%i0, 0, %o0
	lduw		[%l7 + %l4], %l3
	srl		%i1, 0, %o1
	ldx		[%g6 + TI_FLAGS], %l5
	cmp		%l3, NR_SYSCALLS
	bleu,a,pn	%xcc, linux_syscall_for_solaris
	 nop
	andcc		%l3, 1, %g0
	bne,a,pn	%icc, 10f
	 add		%sp, PTREGS_OFF, %o0
10:	srl		%i2, 0, %o2
	mov		%i5, %o5
	andn		%l3, 3, %l7
	andcc		%l5, _TIF_SYSCALL_TRACE, %g0				
	bne,pn		%icc, solaris_syscall_trace		
	 mov		%i0, %l5
2:	call		%l7
	 srl		%i3, 0, %o3
ret_from_solaris:
	stx		%o0, [%sp + PTREGS_OFF + PT_V9_I0]
	ldx		[%g6 + TI_FLAGS], %l6
	sra		%o0, 0, %o0
	mov		%ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2
	ldx		[%sp + PTREGS_OFF + PT_V9_TSTATE], %g3
	cmp		%o0, -ERESTART_RESTARTBLOCK
	sllx		%g2, 32, %g2
	bgeu,pn		%xcc, 1f
	 andcc		%l6, _TIF_SYSCALL_TRACE, %l6	

	/* System call success, clear Carry condition code. */
	andn		%g3, %g2, %g3
	stx		%g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]	
	bne,pn		%icc, solaris_syscall_trace2
	 ldx		[%sp + PTREGS_OFF + PT_V9_TNPC], %l1
	andcc		%l1, 1, %g0
	bne,pn		%icc, 2f
	 clr		%l6
	add		%l1, 0x4, %l2				         
	stx		%l1, [%sp + PTREGS_OFF + PT_V9_TPC]	 ! pc = npc
	call		rtrap
	 stx		%l2, [%sp + PTREGS_OFF + PT_V9_TNPC] !npc = npc+4

	/* When tnpc & 1, this comes from setcontext and we don't want to advance pc */
2:	andn		%l1, 3, %l1
	call		rtrap
	 stx		%l1, [%sp + PTREGS_OFF + PT_V9_TNPC] !npc = npc&~3

1:
	/* System call failure, set Carry condition code.
	 * Also, get abs(errno) to return to the process.
	 */
	sub		%g0, %o0, %o0
	or		%g3, %g2, %g3
	cmp		%o0, ERANGE	/* 0-ERANGE are identity mapped */
	bleu,pt		%icc, 1f
	 cmp		%o0, EMEDIUMTYPE
	bgu,pn		%icc, 1f
	 sethi		%hi(solaris_err_table), %l6
	sll		%o0, 2, %o0
	or		%l6, %lo(solaris_err_table), %l6
	ldsw		[%l6 + %o0], %o0
1:	stx		%o0, [%sp + PTREGS_OFF + PT_V9_I0]
	mov		1, %l6
	stx		%g3, [%sp + PTREGS_OFF + PT_V9_TSTATE]
	bne,pn		%icc, solaris_syscall_trace2
	 ldx		[%sp + PTREGS_OFF + PT_V9_TNPC], %l1
	andcc		%l1, 1, %g0
	bne,pn		%icc, 2b
	 add		%l1, 0x4, %l2
	stx		%l1, [%sp + PTREGS_OFF + PT_V9_TPC]  ! pc = npc
	call		rtrap
	 stx		%l2, [%sp + PTREGS_OFF + PT_V9_TNPC] !npc = npc+4 

solaris_syscall_trace2:
	add		%sp, PTREGS_OFF, %o0
	call		syscall_trace
	 mov		1, %o1
	add		%l1, 0x4, %l2			/* npc = npc+4 */
	andcc		%l1, 1, %g0
	bne,pn		%icc, 2b
	 nop
	stx		%l1, [%sp + PTREGS_OFF + PT_V9_TPC]
	call		rtrap
	 stx		%l2, [%sp + PTREGS_OFF + PT_V9_TNPC]

	/* This one is tricky, so that's why we do it in assembly */
	.globl		solaris_sigsuspend
solaris_sigsuspend:
	call		do_sol_sigsuspend
	 nop
	brlz,pn		%o0, ret_from_solaris
	 nop
	call		sys_sigsuspend
	 stx		%o0, [%sp + PTREGS_OFF + PT_V9_I0]
	b,pt		%xcc, ret_from_solaris
	 nop

	.globl		solaris_getpid
solaris_getpid:
	call		sys_getppid
	 nop
	call		sys_getpid
	 stx		%o0, [%sp + PTREGS_OFF + PT_V9_I1]
	b,pt		%xcc, ret_from_solaris
	 nop

	.globl	solaris_getuid
solaris_getuid:
	call		sys_geteuid
	 nop
	call		sys_getuid
	 stx		%o1, [%sp + PTREGS_OFF + PT_V9_I1]
	b,pt		%xcc, ret_from_solaris
	 nop

	.globl	solaris_getgid
solaris_getgid:
	call		sys_getegid
	 nop
	call		sys_getgid
	 stx		%o1, [%sp + PTREGS_OFF + PT_V9_I1]
	b,pt		%xcc, ret_from_solaris
	 nop

	.globl		solaris_unimplemented
solaris_unimplemented:
	call		do_sol_unimplemented
	 add		%sp, PTREGS_OFF, %o0
	ba,pt		%xcc, ret_from_solaris
	 nop

	.section	__ex_table,#alloc
	.align		4
	.word		exen, exenf