Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* $Id: entry64.S,v 1.7 2002/02/09 19:49:31 davem Exp $ |
2 | * entry64.S: Solaris syscall emulation entry point. | |
3 | * | |
4 | * Copyright (C) 1996,1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
5 | * Copyright (C) 1995,1997 David S. Miller (davem@caip.rutgers.edu) | |
6 | * Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx) | |
7 | */ | |
8 | ||
9 | #include <linux/errno.h> | |
10 | ||
11 | #include <asm/head.h> | |
12 | #include <asm/asi.h> | |
13 | #include <asm/smp.h> | |
14 | #include <asm/ptrace.h> | |
15 | #include <asm/page.h> | |
16 | #include <asm/signal.h> | |
17 | #include <asm/pgtable.h> | |
18 | #include <asm/processor.h> | |
19 | #include <asm/thread_info.h> | |
20 | ||
21 | #include "conv.h" | |
22 | ||
23 | #define NR_SYSCALLS 256 | |
24 | ||
25 | .text | |
26 | solaris_syscall_trace: | |
8d8a6479 | 27 | add %sp, PTREGS_OFF, %o0 |
1da177e4 | 28 | call syscall_trace |
8d8a6479 | 29 | mov 0, %o1 |
1da177e4 LT |
30 | srl %i0, 0, %o0 |
31 | mov %i4, %o4 | |
32 | srl %i1, 0, %o1 | |
33 | mov %i5, %o5 | |
34 | andcc %l3, 1, %g0 | |
35 | be,pt %icc, 2f | |
36 | srl %i2, 0, %o2 | |
37 | b,pt %xcc, 2f | |
38 | add %sp, PTREGS_OFF, %o0 | |
39 | ||
40 | solaris_sucks: | |
41 | /* Solaris is a big system which needs to be able to do all the things | |
42 | * in Inf+1 different ways */ | |
43 | add %i6, 0x5c, %o0 | |
44 | mov %i0, %g1 | |
45 | mov %i1, %i0 | |
46 | mov %i2, %i1 | |
47 | srl %o0, 0, %o0 | |
48 | mov %i3, %i2 | |
49 | movrz %g1, 256, %g1 /* Ensure we don't loop forever */ | |
50 | mov %i4, %i3 | |
51 | mov %i5, %i4 | |
52 | ba,pt %xcc, solaris_sparc_syscall | |
53 | exen: lduwa [%o0] ASI_S, %i5 | |
54 | ||
55 | exenf: ba,pt %xcc, solaris_sparc_syscall | |
56 | clr %i5 | |
57 | ||
58 | /* For shared binaries, binfmt_elf32 already sets up personality | |
59 | and exec_domain. This is to handle static binaries as well */ | |
60 | solaris_reg: | |
61 | call solaris_register | |
62 | nop | |
63 | ba,pt %xcc, 1f | |
64 | mov %i4, %o4 | |
65 | ||
66 | linux_syscall_for_solaris: | |
67 | sethi %hi(sys_call_table32), %l6 | |
68 | or %l6, %lo(sys_call_table32), %l6 | |
69 | sll %l3, 2, %l4 | |
70 | ba,pt %xcc, 10f | |
71 | lduw [%l6 + %l4], %l3 | |
72 | ||
73 | /* Solaris system calls enter here... */ | |
74 | .align 32 | |
75 | .globl solaris_sparc_syscall, entry64_personality_patch | |
76 | solaris_sparc_syscall: | |
77 | entry64_personality_patch: | |
78 | ldub [%g4 + 0x0], %l0 | |
79 | cmp %g1, 255 | |
80 | bg,pn %icc, solaris_unimplemented | |
81 | srl %g1, 0, %g1 | |
82 | sethi %hi(solaris_sys_table), %l7 | |
83 | or %l7, %lo(solaris_sys_table), %l7 | |
84 | brz,pn %g1, solaris_sucks | |
85 | mov %i4, %o4 | |
86 | sll %g1, 2, %l4 | |
87 | cmp %l0, 1 | |
88 | bne,pn %icc, solaris_reg | |
89 | 1: srl %i0, 0, %o0 | |
90 | lduw [%l7 + %l4], %l3 | |
91 | srl %i1, 0, %o1 | |
92 | ldx [%g6 + TI_FLAGS], %l5 | |
93 | cmp %l3, NR_SYSCALLS | |
94 | bleu,a,pn %xcc, linux_syscall_for_solaris | |
95 | nop | |
96 | andcc %l3, 1, %g0 | |
97 | bne,a,pn %icc, 10f | |
98 | add %sp, PTREGS_OFF, %o0 | |
99 | 10: srl %i2, 0, %o2 | |
100 | mov %i5, %o5 | |
101 | andn %l3, 3, %l7 | |
102 | andcc %l5, _TIF_SYSCALL_TRACE, %g0 | |
103 | bne,pn %icc, solaris_syscall_trace | |
104 | mov %i0, %l5 | |
105 | 2: call %l7 | |
106 | srl %i3, 0, %o3 | |
107 | ret_from_solaris: | |
108 | stx %o0, [%sp + PTREGS_OFF + PT_V9_I0] | |
109 | ldx [%g6 + TI_FLAGS], %l6 | |
110 | sra %o0, 0, %o0 | |
111 | mov %ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2 | |
112 | ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %g3 | |
113 | cmp %o0, -ERESTART_RESTARTBLOCK | |
114 | sllx %g2, 32, %g2 | |
115 | bgeu,pn %xcc, 1f | |
116 | andcc %l6, _TIF_SYSCALL_TRACE, %l6 | |
117 | ||
118 | /* System call success, clear Carry condition code. */ | |
119 | andn %g3, %g2, %g3 | |
120 | stx %g3, [%sp + PTREGS_OFF + PT_V9_TSTATE] | |
121 | bne,pn %icc, solaris_syscall_trace2 | |
122 | ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 | |
123 | andcc %l1, 1, %g0 | |
124 | bne,pn %icc, 2f | |
125 | clr %l6 | |
126 | add %l1, 0x4, %l2 | |
127 | stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC] ! pc = npc | |
128 | call rtrap | |
129 | stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC] !npc = npc+4 | |
130 | ||
131 | /* When tnpc & 1, this comes from setcontext and we don't want to advance pc */ | |
132 | 2: andn %l1, 3, %l1 | |
133 | call rtrap | |
134 | stx %l1, [%sp + PTREGS_OFF + PT_V9_TNPC] !npc = npc&~3 | |
135 | ||
136 | 1: | |
137 | /* System call failure, set Carry condition code. | |
138 | * Also, get abs(errno) to return to the process. | |
139 | */ | |
140 | sub %g0, %o0, %o0 | |
141 | or %g3, %g2, %g3 | |
142 | cmp %o0, ERANGE /* 0-ERANGE are identity mapped */ | |
143 | bleu,pt %icc, 1f | |
144 | cmp %o0, EMEDIUMTYPE | |
145 | bgu,pn %icc, 1f | |
146 | sethi %hi(solaris_err_table), %l6 | |
147 | sll %o0, 2, %o0 | |
148 | or %l6, %lo(solaris_err_table), %l6 | |
149 | ldsw [%l6 + %o0], %o0 | |
150 | 1: stx %o0, [%sp + PTREGS_OFF + PT_V9_I0] | |
151 | mov 1, %l6 | |
152 | stx %g3, [%sp + PTREGS_OFF + PT_V9_TSTATE] | |
153 | bne,pn %icc, solaris_syscall_trace2 | |
154 | ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 | |
155 | andcc %l1, 1, %g0 | |
156 | bne,pn %icc, 2b | |
157 | add %l1, 0x4, %l2 | |
158 | stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC] ! pc = npc | |
159 | call rtrap | |
160 | stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC] !npc = npc+4 | |
161 | ||
162 | solaris_syscall_trace2: | |
8d8a6479 | 163 | add %sp, PTREGS_OFF, %o0 |
1da177e4 | 164 | call syscall_trace |
8d8a6479 DM |
165 | mov 1, %o1 |
166 | add %l1, 0x4, %l2 /* npc = npc+4 */ | |
1da177e4 LT |
167 | andcc %l1, 1, %g0 |
168 | bne,pn %icc, 2b | |
169 | nop | |
170 | stx %l1, [%sp + PTREGS_OFF + PT_V9_TPC] | |
171 | call rtrap | |
172 | stx %l2, [%sp + PTREGS_OFF + PT_V9_TNPC] | |
173 | ||
174 | /* This one is tricky, so that's why we do it in assembly */ | |
175 | .globl solaris_sigsuspend | |
176 | solaris_sigsuspend: | |
177 | call do_sol_sigsuspend | |
178 | nop | |
179 | brlz,pn %o0, ret_from_solaris | |
180 | nop | |
181 | call sys_sigsuspend | |
182 | stx %o0, [%sp + PTREGS_OFF + PT_V9_I0] | |
2d7d5f05 DM |
183 | b,pt %xcc, ret_from_solaris |
184 | nop | |
1da177e4 LT |
185 | |
186 | .globl solaris_getpid | |
187 | solaris_getpid: | |
188 | call sys_getppid | |
189 | nop | |
190 | call sys_getpid | |
191 | stx %o0, [%sp + PTREGS_OFF + PT_V9_I1] | |
192 | b,pt %xcc, ret_from_solaris | |
193 | nop | |
194 | ||
195 | .globl solaris_getuid | |
196 | solaris_getuid: | |
197 | call sys_geteuid | |
198 | nop | |
199 | call sys_getuid | |
200 | stx %o1, [%sp + PTREGS_OFF + PT_V9_I1] | |
201 | b,pt %xcc, ret_from_solaris | |
202 | nop | |
203 | ||
204 | .globl solaris_getgid | |
205 | solaris_getgid: | |
206 | call sys_getegid | |
207 | nop | |
208 | call sys_getgid | |
209 | stx %o1, [%sp + PTREGS_OFF + PT_V9_I1] | |
210 | b,pt %xcc, ret_from_solaris | |
211 | nop | |
212 | ||
213 | .globl solaris_unimplemented | |
214 | solaris_unimplemented: | |
215 | call do_sol_unimplemented | |
216 | add %sp, PTREGS_OFF, %o0 | |
217 | ba,pt %xcc, ret_from_solaris | |
218 | nop | |
219 | ||
4d000d5b | 220 | .section __ex_table,"a" |
1da177e4 LT |
221 | .align 4 |
222 | .word exen, exenf | |
223 |