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/* sclow.S: Low level special syscall handling.
* Basically these are cases where we can completely
* handle the system call without saving any state
* because we know that the process will not sleep.
*
* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
*/
#include <asm/cprefix.h>
#include <asm/ptrace.h>
#include <asm/errno.h>
#include <asm/winmacro.h>
#include <asm/psr.h>
#include <asm/page.h>
#define CC_AND_RETT \
set PSR_C, %l4; \
andn %l0, %l4, %l4; \
wr %l4, 0x0, %psr; \
nop; nop; nop; \
jmp %l2; \
rett %l2 + 4;
#define SC_AND_RETT \
set PSR_C, %l4; \
or %l0, %l4, %l4; \
wr %l4, 0x0, %psr; \
nop; nop; nop; \
jmp %l2; \
rett %l2 + 4;
#define LABEL(func) CONCAT(func, _low)
.globl LABEL(sunosnop)
LABEL(sunosnop):
CC_AND_RETT
#if 0
/* Not SMP safe */
.globl LABEL(sunosgetpid)
LABEL(sunosgetpid):
LOAD_CURRENT(l4, l5)
ld [%l4 + AOFF_task_pid], %i0
ld [%l4 + AOFF_task_p_opptr], %l5
ld [%l5 + AOFF_task_pid], %i1
CC_AND_RETT
#endif
#if (ASIZ_task_uid == 2 && ASIZ_task_euid == 2)
.globl LABEL(sunosgetuid)
LABEL(sunosgetuid):
LOAD_CURRENT(l4, l5)
lduh [%l4 + AOFF_task_uid], %i0
lduh [%l4 + AOFF_task_euid], %i1
CC_AND_RETT
#endif
#if (ASIZ_task_gid == 2 && ASIZ_task_egid == 2)
.globl LABEL(sunosgetgid)
LABEL(sunosgetgid):
LOAD_CURRENT(l4, l5)
lduh [%l4 + AOFF_task_gid], %i0
lduh [%l4 + AOFF_task_egid], %i1
CC_AND_RETT
#endif
.globl LABEL(sunosmctl)
LABEL(sunosmctl):
mov 0, %i0
CC_AND_RETT
.globl LABEL(sunosgdtsize)
LABEL(sunosgdtsize):
mov 256, %i0
CC_AND_RETT
.globl LABEL(sunossblock)
LABEL(sunossblock):
LOAD_CURRENT(l4, l5)
set -65793, %l5
and %i0, %l5, %l5
ld [%l4 + AOFF_task_blocked], %i0
or %i0, %l5, %l5
st %l5, [%l4 + AOFF_task_blocked]
CC_AND_RETT
.globl LABEL(sunossmask)
LABEL(sunossmask):
LOAD_CURRENT(l4, l5)
set -65793, %l5
and %i0, %l5, %l5
ld [%l4 + AOFF_task_blocked], %i0
st %l5, [%l4 + AOFF_task_blocked]
CC_AND_RETT
.globl LABEL(getpagesize)
LABEL(getpagesize):
set PAGE_SIZE, %i0
CC_AND_RETT
/* XXX sys_nice() XXX */
/* XXX sys_setpriority() XXX */
/* XXX sys_getpriority() XXX */
/* XXX sys_setregid() XXX */
/* XXX sys_setgid() XXX */
/* XXX sys_setreuid() XXX */
/* XXX sys_setuid() XXX */
/* XXX sys_setfsuid() XXX */
/* XXX sys_setfsgid() XXX */
/* XXX sys_setpgid() XXX */
/* XXX sys_getpgid() XXX */
/* XXX sys_setsid() XXX */
/* XXX sys_getsid() XXX */
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