Loading...
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 | /* $Id: entry64.S,v 1.5 1998/03/26 08:46:15 jj 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 "conv.h" #define NR_SYSCALLS 256 .text solaris_syscall_trace: call syscall_trace nop 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, STACK_BIAS + REGWIN_SZ, %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: sll %l3, 2, %l4 ba,pt %xcc, 10f lduw [%l6 + %l4], %l3 /* Solaris system calls enter here... */ .align 32 .globl solaris_sparc_syscall solaris_sparc_syscall: ldub [%g6 + AOFF_task_personality + ASIZ_task_personality - 1], %l0 cmp %g1, 255 bg,pn %icc, solaris_unimplemented srl %g1, 0, %g1 sethi %hi(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 + AOFF_task_flags], %l5 cmp %l3, NR_SYSCALLS bleu,a,pn %xcc, linux_syscall_for_solaris sethi %hi(sys_call_table32), %l6 andcc %l3, 1, %g0 bne,a,pn %icc, 10f add %sp, STACK_BIAS + REGWIN_SZ, %o0 10: srl %i2, 0, %o2 mov %i5, %o5 andn %l3, 3, %l7 andcc %l5, 0x20, %g0 bne,pn %icc, solaris_syscall_trace mov %i0, %l5 2: call %l7 srl %i3, 0, %o3 ret_from_solaris: stx %o0, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I0] ldx [%g6 + AOFF_task_flags], %l6 sra %o0, 0, %o0 mov %ulo(TSTATE_XCARRY | TSTATE_ICARRY), %g2 ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TSTATE], %g3 cmp %o0, -ENOIOCTLCMD sllx %g2, 32, %g2 bgeu,pn %xcc, 1f andcc %l6, 0x20, %l6 /* System call success, clear Carry condition code. */ andn %g3, %g2, %g3 stx %g3, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TSTATE] bne,pn %icc, solaris_syscall_trace2 ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC], %l1 andcc %l1, 1, %g0 bne,pn %icc, 2f clr %l6 add %l1, 0x4, %l2 stx %l1, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TPC] ! pc = npc call rtrap stx %l2, [%sp + STACK_BIAS + REGWIN_SZ + 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 + STACK_BIAS + REGWIN_SZ + 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 + STACK_BIAS + REGWIN_SZ + PT_V9_I0] mov 1, %l6 stx %g3, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TSTATE] bne,pn %icc, solaris_syscall_trace2 ldx [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC], %l1 andcc %l1, 1, %g0 bne,pn %icc, 2b add %l1, 0x4, %l2 stx %l1, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TPC] ! pc = npc call rtrap stx %l2, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TNPC] !npc = npc+4 solaris_syscall_trace2: call syscall_trace add %l1, 0x4, %l2 /* npc = npc+4 */ andcc %l1, 1, %g0 bne,pn %icc, 2b nop stx %l1, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_TPC] call rtrap stx %l2, [%sp + STACK_BIAS + REGWIN_SZ + 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 + STACK_BIAS + REGWIN_SZ + PT_V9_I0] .globl solaris_getpid solaris_getpid: call sys_getppid /* This is tricky, so don't do it in assembly */ nop stx %o0, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I1] b,pt %xcc, ret_from_solaris lduw [%g6 + AOFF_task_pid], %o0 .globl solaris_getuid solaris_getuid: lduh [%g6 + AOFF_task_euid], %o1 lduh [%g6 + AOFF_task_uid], %o0 b,pt %xcc, ret_from_solaris stx %o1, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I1] .globl solaris_getgid solaris_getgid: lduh [%g6 + AOFF_task_egid], %o1 lduh [%g6 + AOFF_task_gid], %o0 b,pt %xcc, ret_from_solaris stx %o1, [%sp + STACK_BIAS + REGWIN_SZ + PT_V9_I1] .globl solaris_unimplemented solaris_unimplemented: call do_sol_unimplemented add %sp, STACK_BIAS + REGWIN_SZ, %o0 ba,pt %xcc, ret_from_solaris nop .section __ex_table,#alloc .align 4 .word exen, exenf |