![David S. Miller](/assets/img/avatar_default.png)
We must use the "a" (allocate) attribute every time we emit an entry into the __ex_table section. For consistency, use "a" instead of #alloc which is some Solaris compat cruft GNU as provides on Sparc. Signed-off-by: David S. Miller <davem@davemloft.net>
224 lines
5.3 KiB
ArmAsm
224 lines
5.3 KiB
ArmAsm
/* $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,"a"
|
|
.align 4
|
|
.word exen, exenf
|
|
|