/* $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
